Merge branch 'meilisearch:main' into enhancement-4379-script-correction-when-musl-present

.github/workflows/milestone-workflow.yml

@@ -110,6 +110,25 @@ jobs:
             --milestone $MILESTONE_VERSION \
             --assignee curquiza
 
+  create-update-version-issue:
+    needs: get-release-version
+    # Create the changelog issue if the release is not only a patch release
+    if: github.event.action == 'created'
+    runs-on: ubuntu-latest
+    env:
+      ISSUE_TEMPLATE: issue-template.md
+    steps:
+      - uses: actions/checkout@v3
+      - name: Download the issue template
+        run: curl -s https://raw.githubusercontent.com/meilisearch/engine-team/main/issue-templates/update-version-issue.md > $ISSUE_TEMPLATE
+      - name: Create the issue
+        run: |
+          gh issue create \
+            --title "Update version in Cargo.toml for $MILESTONE_VERSION" \
+            --label 'maintenance' \
+            --body-file $ISSUE_TEMPLATE \
+            --milestone $MILESTONE_VERSION
+
 # ----------------
 # MILESTONE CLOSED
 # ----------------

Cargo.lock

@@ -36,16 +36,16 @@ dependencies = [
 
 [[package]]
 name = "actix-http"
-version = "3.5.1"
+version = "3.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "129d4c88e98860e1758c5de288d1632b07970a16d59bdf7b8d66053d582bb71f"
+checksum = "d223b13fd481fc0d1f83bb12659ae774d9e3601814c68a0bc539731698cca743"
 dependencies = [
  "actix-codec",
  "actix-rt",
  "actix-service",
  "actix-tls",
  "actix-utils",
- "ahash 0.8.3",
+ "ahash 0.8.8",
  "base64 0.21.7",
  "bitflags 2.4.1",
  "brotli",
@@ -138,9 +138,9 @@ dependencies = [
 
 [[package]]
 name = "actix-tls"
-version = "3.1.1"
+version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72616e7fbec0aa99c6f3164677fa48ff5a60036d0799c98cab894a44f3e0efc3"
+checksum = "d4cce60a2f2b477bc72e5cde0af1812a6e82d8fd85b5570a5dcf2a5bf2c5be5f"
 dependencies = [
  "actix-rt",
  "actix-service",
@@ -148,13 +148,11 @@ dependencies = [
  "futures-core",
  "impl-more",
  "pin-project-lite",
- "rustls 0.21.6",
- "rustls-webpki",
  "tokio",
- "tokio-rustls 0.23.4",
+ "tokio-rustls",
  "tokio-util",
  "tracing",
- "webpki-roots 0.22.6",
+ "webpki-roots",
 ]
 
 [[package]]
@@ -169,9 +167,9 @@ dependencies = [
 
 [[package]]
 name = "actix-web"
-version = "4.4.1"
+version = "4.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e43428f3bf11dee6d166b00ec2df4e3aa8cc1606aaa0b7433c146852e2f4e03b"
+checksum = "43a6556ddebb638c2358714d853257ed226ece6023ef9364f23f0c70737ea984"
 dependencies = [
  "actix-codec",
  "actix-http",
@@ -183,7 +181,7 @@ dependencies = [
  "actix-tls",
  "actix-utils",
  "actix-web-codegen",
- "ahash 0.8.3",
+ "ahash 0.8.8",
  "bytes",
  "bytestring",
  "cfg-if",
@@ -270,14 +268,15 @@ dependencies = [
 
 [[package]]
 name = "ahash"
-version = "0.8.3"
+version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c99f64d1e06488f620f932677e24bc6e2897582980441ae90a671415bd7ec2f"
+checksum = "42cd52102d3df161c77a887b608d7a4897d7cc112886a9537b738a887a03aaff"
 dependencies = [
  "cfg-if",
  "getrandom",
  "once_cell",
  "version_check",
+ "zerocopy",
 ]
 
 [[package]]
@@ -494,7 +493,7 @@ checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
 
 [[package]]
 name = "benchmarks"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "anyhow",
  "bytes",
@@ -535,6 +534,26 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "bindgen"
+version = "0.68.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "726e4313eb6ec35d2730258ad4e15b547ee75d6afaa1361a922e78e59b7d8078"
+dependencies = [
+ "bitflags 2.4.1",
+ "cexpr",
+ "clang-sys",
+ "lazy_static",
+ "lazycell",
+ "peeking_take_while",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash",
+ "shlex",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.5.3"
@@ -814,9 +833,9 @@ checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
 
 [[package]]
 name = "cc"
-version = "1.0.82"
+version = "1.0.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "305fe645edc1442a0fa8b6726ba61d422798d37a52e12eaecf4b022ebbb88f01"
+checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
 dependencies = [
  "jobserver",
  "libc",
@@ -831,6 +850,15 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "cexpr"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
+dependencies = [
+ "nom",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -915,6 +943,17 @@ dependencies = [
  "inout",
 ]
 
+[[package]]
+name = "clang-sys"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67523a3b4be3ce1989d607a828d036249522dd9c1c8de7f4dd2dae43a37369d1"
+dependencies = [
+ "glob",
+ "libc",
+ "libloading",
+]
+
 [[package]]
 name = "clap"
 version = "4.4.17"
@@ -961,6 +1000,18 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67ba02a97a2bd10f4b59b25c7973101c79642302776489e030cd13cdab09ed15"
 
+[[package]]
+name = "color-spantrace"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd6be1b2a7e382e2b98b43b2adcca6bb0e465af0bdd38123873ae61eb17a72c2"
+dependencies = [
+ "once_cell",
+ "owo-colors",
+ "tracing-core",
+ "tracing-error",
+]
+
 [[package]]
 name = "colorchoice"
 version = "1.0.0"
@@ -1286,6 +1337,15 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "debugid"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef552e6f588e446098f6ba40d89ac146c8c7b64aade83c051ee00bb5d2bc18d"
+dependencies = [
+ "uuid",
+]
+
 [[package]]
 name = "deduplicating_array"
 version = "0.1.5"
@@ -1476,13 +1536,12 @@ dependencies = [
 
 [[package]]
 name = "dump"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "anyhow",
  "big_s",
  "flate2",
  "http 0.2.11",
- "log",
  "maplit",
  "meili-snap",
  "meilisearch-auth",
@@ -1496,6 +1555,7 @@ dependencies = [
  "tempfile",
  "thiserror",
  "time",
+ "tracing",
  "uuid",
 ]
 
@@ -1720,7 +1780,7 @@ dependencies = [
 
 [[package]]
 name = "file-store"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "faux",
  "tempfile",
@@ -1742,7 +1802,7 @@ dependencies = [
 
 [[package]]
 name = "filter-parser"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "insta",
  "nom",
@@ -1773,7 +1833,7 @@ dependencies = [
 
 [[package]]
 name = "flatten-serde-json"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "criterion",
  "serde_json",
@@ -1891,7 +1951,7 @@ dependencies = [
 
 [[package]]
 name = "fuzzers"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "arbitrary",
  "clap",
@@ -1911,6 +1971,19 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "fxprof-processed-profile"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27d12c0aed7f1e24276a241aadc4cb8ea9f83000f34bc062b7cc2d51e3b0fabd"
+dependencies = [
+ "bitflags 2.4.1",
+ "debugid",
+ "fxhash",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "gemm"
 version = "0.17.0"
@@ -2052,8 +2125,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be4136b2a15dd319360be1c07d9933517ccf0be8f16bf62a3bee4f0d618df427"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "wasi",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -2177,7 +2252,7 @@ dependencies = [
  "atomic-polyfill",
  "hash32",
  "rustc_version",
- "spin 0.9.8",
+ "spin",
  "stable_deref_trait",
 ]
 
@@ -2346,9 +2421,9 @@ dependencies = [
  "futures-util",
  "http 0.2.11",
  "hyper",
- "rustls 0.21.6",
+ "rustls",
  "tokio",
- "tokio-rustls 0.24.1",
+ "tokio-rustls",
 ]
 
 [[package]]
@@ -2856,7 +2931,7 @@ checksum = "206ca75c9c03ba3d4ace2460e57b189f39f43de612c2f85836e65c929701bb2d"
 
 [[package]]
 name = "index-scheduler"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "anyhow",
  "big_s",
@@ -2869,11 +2944,9 @@ dependencies = [
  "file-store",
  "flate2",
  "insta",
- "log",
  "meili-snap",
  "meilisearch-auth",
  "meilisearch-types",
- "nelson",
  "page_size 0.5.0",
  "puffin",
  "roaring",
@@ -2883,6 +2956,7 @@ dependencies = [
  "tempfile",
  "thiserror",
  "time",
+ "tracing",
  "ureq",
  "uuid",
 ]
@@ -3043,7 +3117,7 @@ dependencies = [
 
 [[package]]
 name = "json-depth-checker"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "criterion",
  "serde_json",
@@ -3051,13 +3125,14 @@ dependencies = [
 
 [[package]]
 name = "jsonwebtoken"
-version = "8.3.0"
+version = "9.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6971da4d9c3aa03c3d8f3ff0f4155b534aad021292003895a469716b2a230378"
+checksum = "5c7ea04a7c5c055c175f189b6dc6ba036fd62306b58c66c9f6389036c503a3f4"
 dependencies = [
  "base64 0.21.7",
+ "js-sys",
  "pem",
- "ring 0.16.20",
+ "ring",
  "serde",
  "serde_json",
  "simple_asn1",
@@ -3085,6 +3160,12 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
+[[package]]
+name = "lazycell"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
+
 [[package]]
 name = "levenshtein_automata"
 version = "0.2.1"
@@ -3112,6 +3193,16 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "libloading"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c571b676ddfc9a8c12f1f3d3085a7b163966a8fd8098a90640953ce5f6170161"
+dependencies = [
+ "cfg-if",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "libm"
 version = "0.2.7"
@@ -3128,6 +3219,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "libproc"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "229004ebba9d1d5caf41623f1523b6d52abb47d9f6ab87f7e6fc992e3b854aef"
+dependencies = [
+ "bindgen",
+ "errno",
+ "libc",
+]
+
 [[package]]
 name = "libz-sys"
 version = "1.1.12"
@@ -3555,7 +3657,7 @@ checksum = "490cc448043f947bae3cbee9c203358d62dbee0db12107a74be5c30ccfd09771"
 
 [[package]]
 name = "meili-snap"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "insta",
  "md5",
@@ -3564,7 +3666,7 @@ dependencies = [
 
 [[package]]
 name = "meilisearch"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "actix-cors",
  "actix-http",
@@ -3586,7 +3688,6 @@ dependencies = [
  "deserr",
  "dump",
  "either",
- "env_logger",
  "file-store",
  "flate2",
  "fst",
@@ -3601,7 +3702,6 @@ dependencies = [
  "itertools 0.11.0",
  "jsonwebtoken",
  "lazy_static",
- "log",
  "manifest-dir-macros",
  "maplit",
  "meili-snap",
@@ -3623,7 +3723,7 @@ dependencies = [
  "rayon",
  "regex",
  "reqwest",
- "rustls 0.20.9",
+ "rustls",
  "rustls-pemfile",
  "segment",
  "serde",
@@ -3644,6 +3744,10 @@ dependencies = [
  "tokio",
  "tokio-stream",
  "toml",
+ "tracing",
+ "tracing-actix-web",
+ "tracing-subscriber",
+ "tracing-trace",
  "url",
  "urlencoding",
  "uuid",
@@ -3655,7 +3759,7 @@ dependencies = [
 
 [[package]]
 name = "meilisearch-auth"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "base64 0.21.7",
  "enum-iterator",
@@ -3674,7 +3778,7 @@ dependencies = [
 
 [[package]]
 name = "meilisearch-types"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "actix-web",
  "anyhow",
@@ -3704,7 +3808,7 @@ dependencies = [
 
 [[package]]
 name = "meilitool"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "anyhow",
  "clap",
@@ -3743,7 +3847,7 @@ dependencies = [
 
 [[package]]
 name = "milli"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "arroy",
  "big_s",
@@ -3776,7 +3880,6 @@ dependencies = [
  "json-depth-checker",
  "levenshtein_automata",
  "liquid",
- "log",
  "logging_timer",
  "maplit",
  "md5",
@@ -3805,6 +3908,7 @@ dependencies = [
  "time",
  "tokenizers",
  "tokio",
+ "tracing",
  "uuid",
 ]
 
@@ -3882,9 +3986,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "nelson"
+name = "mutually_exclusive_features"
-version = "0.1.0"
+version = "0.0.3"
-source = "git+https://github.com/meilisearch/nelson.git?rev=675f13885548fb415ead8fbb447e9e6d9314000a#675f13885548fb415ead8fbb447e9e6d9314000a"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d02c0b00610773bb7fc61d85e13d86c7858cbdf00e1a120bfc41bc055dbaa0e"
 
 [[package]]
 name = "nom"
@@ -3916,6 +4021,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
+dependencies = [
+ "overload",
+ "winapi",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.3"
@@ -4037,6 +4152,18 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "overload"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
+
+[[package]]
+name = "owo-colors"
+version = "3.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1b04fb49957986fdce4d6ee7a65027d55d4b6d2265e5848bbb507b58ccfdb6f"
+
 [[package]]
 name = "page_size"
 version = "0.5.0"
@@ -4125,12 +4252,19 @@ dependencies = [
 ]
 
 [[package]]
-name = "pem"
+name = "peeking_take_while"
-version = "1.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8835c273a76a90455d7344889b0964598e3316e2a79ede8e36f16bdcf2228b8"
+checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
+
+[[package]]
+name = "pem"
+version = "3.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b8fcc794035347fb64beda2d3b462595dd2753e3f268d89c5aae77e8cf2c310"
 dependencies = [
- "base64 0.13.1",
+ "base64 0.21.7",
+ "serde",
 ]
 
 [[package]]
@@ -4141,7 +4275,7 @@ checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "permissive-json-pointer"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "big_s",
  "serde_json",
@@ -4243,6 +4377,26 @@ dependencies = [
  "siphasher 0.3.11",
 ]
 
+[[package]]
+name = "pin-project"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0302c4a0442c456bd56f841aee5c3bfd17967563f6fadc9ceb9f9c23cf3807e0"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "266c042b60c9c76b8d53061e52b2e0d1116abc57cefc8c5cd671619a56ac3690"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.13"
@@ -4641,20 +4795,20 @@ dependencies = [
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
- "rustls 0.21.6",
+ "rustls",
  "rustls-pemfile",
  "serde",
  "serde_json",
  "serde_urlencoded",
  "system-configuration",
  "tokio",
- "tokio-rustls 0.24.1",
+ "tokio-rustls",
  "tower-service",
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
- "webpki-roots 0.25.3",
+ "webpki-roots",
  "winreg",
 ]
 
@@ -4672,30 +4826,15 @@ checksum = "b9b1a3d5f46d53f4a3478e2be4a5a5ce5108ea58b100dcd139830eae7f79a3a1"
 
 [[package]]
 name = "ring"
-version = "0.16.20"
+version = "0.17.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3053cf52e236a3ed746dfc745aa9cacf1b791d846bdaf412f60a8d7d6e17c8fc"
+checksum = "688c63d65483050968b2a8937f7995f443e27041a0f7700aa59b0822aedebb74"
-dependencies = [
- "cc",
- "libc",
- "once_cell",
- "spin 0.5.2",
- "untrusted 0.7.1",
- "web-sys",
- "winapi",
-]
-
-[[package]]
-name = "ring"
-version = "0.17.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9babe80d5c16becf6594aa32ad2be8fe08498e7ae60b77de8df700e67f191d7e"
 dependencies = [
  "cc",
  "getrandom",
  "libc",
- "spin 0.9.8",
+ "spin",
- "untrusted 0.9.0",
+ "untrusted",
  "windows-sys 0.48.0",
 ]
 
@@ -4773,24 +4912,12 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.20.9"
+version = "0.21.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b80e3dec595989ea8510028f30c408a4630db12c9cbb8de34203b89d6577e99"
+checksum = "f9d5a6813c0759e4609cd494e8e725babae6a2ca7b62a5536a13daaec6fcb7ba"
 dependencies = [
  "log",
- "ring 0.16.20",
+ "ring",
- "sct",
- "webpki",
-]
-
-[[package]]
-name = "rustls"
-version = "0.21.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d1feddffcfcc0b33f5c6ce9a29e341e4cd59c3f78e7ee45f4a40c038b1d6cbb"
-dependencies = [
- "log",
- "ring 0.16.20",
  "rustls-webpki",
  "sct",
 ]
@@ -4810,8 +4937,8 @@ version = "0.101.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b6275d1ee7a1cd780b64aca7726599a1dbc893b1e64144529e55c3c2f745765"
 dependencies = [
- "ring 0.17.3",
+ "ring",
- "untrusted 0.9.0",
+ "untrusted",
 ]
 
 [[package]]
@@ -4853,12 +4980,12 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "sct"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d53dcdb7c9f8158937a7981b48accfd39a43af418591a5d008c7b22b5e1b7ca4"
+checksum = "da046153aa2352493d6cb7da4b6e5c0c057d8a1d0a9aa8560baffdd945acd414"
 dependencies = [
- "ring 0.16.20",
+ "ring",
- "untrusted 0.7.1",
+ "untrusted",
 ]
 
 [[package]]
@@ -4994,6 +5121,21 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.1"
@@ -5109,12 +5251,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "spin"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
-
 [[package]]
 name = "spin"
 version = "0.9.8"
@@ -5326,6 +5462,16 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fdd6f064ccff2d6567adcb3873ca630700f00b5ad3f060c25b5dcfd9a4ce152"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+]
+
 [[package]]
 name = "tiktoken-rs"
 version = "0.5.8"
@@ -5466,24 +5612,13 @@ dependencies = [
  "syn 2.0.48",
 ]
 
-[[package]]
-name = "tokio-rustls"
-version = "0.23.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c43ee83903113e03984cb9e5cebe6c04a5116269e900e3ddba8f068a62adda59"
-dependencies = [
- "rustls 0.20.9",
- "tokio",
- "webpki",
-]
-
 [[package]]
 name = "tokio-rustls"
 version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c28327cf380ac148141087fbfb9de9d7bd4e84ab5d2c28fbc911d753de8a7081"
 dependencies = [
- "rustls 0.21.6",
+ "rustls",
  "tokio",
 ]
 
@@ -5554,17 +5689,29 @@ checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
 
 [[package]]
 name = "tracing"
-version = "0.1.37"
+version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
+checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
- "cfg-if",
  "log",
  "pin-project-lite",
  "tracing-attributes",
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-actix-web"
+version = "0.7.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fe0d5feac3f4ca21ba33496bcb1ccab58cca6412b1405ae80f0581541e0ca78"
+dependencies = [
+ "actix-web",
+ "mutually_exclusive_features",
+ "pin-project",
+ "tracing",
+ "uuid",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.27"
@@ -5578,11 +5725,63 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.31"
+version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0955b8137a1df6f1a2e9a37d8a6656291ff0297c1a97c24e0d8425fe2312f79a"
+checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
 dependencies = [
  "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-error"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d686ec1c0f384b1277f097b2f279a2ecc11afe8c133c1aabf036a27cb4cd206e"
+dependencies = [
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad0f048c97dbd9faa9b7df56362b8ebcaa52adb06b498c050d2f4e32f90a7a8b"
+dependencies = [
+ "nu-ansi-term",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing-core",
+ "tracing-log",
+]
+
+[[package]]
+name = "tracing-trace"
+version = "0.1.0"
+dependencies = [
+ "byte-unit",
+ "color-spantrace",
+ "fxprof-processed-profile",
+ "libproc",
+ "serde",
+ "serde_json",
+ "tokio",
+ "tracing",
+ "tracing-error",
+ "tracing-subscriber",
 ]
 
 [[package]]
@@ -5675,12 +5874,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39ec24b3121d976906ece63c9daad25b85969647682eee313cb5779fdd69e14e"
 
-[[package]]
-name = "untrusted"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
-
 [[package]]
 name = "untrusted"
 version = "0.9.0"
@@ -5697,13 +5890,13 @@ dependencies = [
  "flate2",
  "log",
  "once_cell",
- "rustls 0.21.6",
+ "rustls",
  "rustls-webpki",
  "serde",
  "serde_json",
  "socks",
  "url",
- "webpki-roots 0.25.3",
+ "webpki-roots",
 ]
 
 [[package]]
@@ -5758,6 +5951,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "valuable"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -5907,25 +6106,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "webpki"
-version = "0.22.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07ecc0cd7cac091bf682ec5efa18b1cff79d617b84181f38b3951dbe135f607f"
-dependencies = [
- "ring 0.16.20",
- "untrusted 0.7.1",
-]
-
-[[package]]
-name = "webpki-roots"
-version = "0.22.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6c71e40d7d2c34a5106301fb632274ca37242cd0c9d3e64dbece371a40a2d87"
-dependencies = [
- "webpki",
-]
-
 [[package]]
 name = "webpki-roots"
 version = "0.25.3"
@@ -6232,7 +6412,7 @@ dependencies = [
 
 [[package]]
 name = "xtask"
-version = "1.6.1"
+version = "1.7.0"
 dependencies = [
  "cargo_metadata",
  "clap",
@@ -6287,6 +6467,26 @@ dependencies = [
  "synstructure",
 ]
 
+[[package]]
+name = "zerocopy"
+version = "0.7.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74d4d3961e53fa4c9a25a8637fc2bfaf2595b3d3ae34875568a5cf64787716be"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ce1b18ccd8e73a9321186f97e46f9f04b778851177567b1975109d26a08d2a6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "zerofrom"
 version = "0.1.3"

Cargo.toml

@@ -16,12 +16,16 @@ members = [
     "json-depth-checker",
     "benchmarks",
     "fuzzers",
+    "tracing-trace",
     "xtask",
 ]
 
 [workspace.package]
-version = "1.6.1"
+version = "1.7.0"
-authors = ["Quentin de Quelen <quentin@dequelen.me>", "Clément Renault <clement@meilisearch.com>"]
+authors = [
+    "Quentin de Quelen <quentin@dequelen.me>",
+    "Clément Renault <clement@meilisearch.com>",
+]
 description = "Meilisearch HTTP server"
 homepage = "https://meilisearch.com"
 readme = "README.md"

README.md

@@ -41,10 +41,10 @@ Meilisearch helps you shape a delightful search experience in a snap, offering f
 ## ✨ Features
 
 - **Search-as-you-type:** find search results in less than 50 milliseconds
-- **[Typo tolerance](https://www.meilisearch.com/docs/learn/getting_started/customizing_relevancy?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features#typo-tolerance):** get relevant matches even when queries contain typos and misspellings
+- **[Typo tolerance](https://www.meilisearch.com/docs/learn/configuration/typo_tolerance?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** get relevant matches even when queries contain typos and misspellings
 - **[Filtering](https://www.meilisearch.com/docs/learn/fine_tuning_results/filtering?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features) and [faceted search](https://www.meilisearch.com/docs/learn/fine_tuning_results/faceted_search?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** enhance your users' search experience with custom filters and build a faceted search interface in a few lines of code
 - **[Sorting](https://www.meilisearch.com/docs/learn/fine_tuning_results/sorting?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** sort results based on price, date, or pretty much anything else your users need
-- **[Synonym support](https://www.meilisearch.com/docs/learn/getting_started/customizing_relevancy?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features#synonyms):** configure synonyms to include more relevant content in your search results
+- **[Synonym support](https://www.meilisearch.com/docs/learn/configuration/synonyms?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** configure synonyms to include more relevant content in your search results
 - **[Geosearch](https://www.meilisearch.com/docs/learn/fine_tuning_results/geosearch?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** filter and sort documents based on geographic data
 - **[Extensive language support](https://www.meilisearch.com/docs/learn/what_is_meilisearch/language?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** search datasets in any language, with optimized support for Chinese, Japanese, Hebrew, and languages using the Latin alphabet
 - **[Security management](https://www.meilisearch.com/docs/learn/security/master_api_keys?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** control which users can access what data with API keys that allow fine-grained permissions handling
@@ -61,8 +61,6 @@ You can consult Meilisearch's documentation at [https://www.meilisearch.com/docs
 
 For basic instructions on how to set up Meilisearch, add documents to an index, and search for documents, take a look at our [Quick Start](https://www.meilisearch.com/docs/learn/getting_started/quick_start?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=get-started) guide.
 
-You may also want to check out [Meilisearch 101](https://www.meilisearch.com/docs/learn/getting_started/filtering_and_sorting?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=get-started) for an introduction to some of Meilisearch's most popular features.
-
 ## ⚡ Supercharge your Meilisearch experience
 
 Say goodbye to server deployment and manual updates with [Meilisearch Cloud](https://www.meilisearch.com/cloud?utm_campaign=oss&utm_source=github&utm_medium=meilisearch). No credit card required.
@@ -101,7 +99,7 @@ Meilisearch is a search engine created by [Meili](https://www.welcometothejungle
 
 - For feature requests, please visit our [product repository](https://github.com/meilisearch/product/discussions)
 - Found a bug? Open an [issue](https://github.com/meilisearch/meilisearch/issues)!
-- Want to be part of our Discord community? [Join us!](https://discord.gg/meilisearch)
+- Want to be part of our Discord community? [Join us!](https://discord.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=contact)
 
 Thank you for your support!
 

dump/Cargo.toml

@@ -14,7 +14,6 @@ license.workspace = true
 anyhow = "1.0.79"
 flate2 = "1.0.28"
 http = "0.2.11"
-log = "0.4.20"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-types = { path = "../meilisearch-types" }
 once_cell = "1.19.0"
@@ -26,6 +25,7 @@ tar = "0.4.40"
 tempfile = "3.9.0"
 thiserror = "1.0.56"
 time = { version = "0.3.31", features = ["serde-well-known", "formatting", "parsing", "macros"] }
+tracing = "0.1.40"
 uuid = { version = "1.6.1", features = ["serde", "v4"] }
 
 [dev-dependencies]

dump/src/reader/compat/v1_to_v2.rs

@@ -120,7 +120,7 @@ impl From<v1::settings::Settings> for v2::Settings<v2::Unchecked> {
                                 criterion.as_ref().map(ToString::to_string)
                             }
                             Err(()) => {
-                                log::warn!(
+                                tracing::warn!(
                                     "Could not import the following ranking rule: `{}`.",
                                     ranking_rule
                                 );
@@ -152,11 +152,11 @@ impl From<v1::update::UpdateStatus> for Option<v2::updates::UpdateStatus> {
         use v2::updates::UpdateStatus as UpdateStatusV2;
         Some(match source {
             UpdateStatusV1::Enqueued { content } => {
-                log::warn!(
+                tracing::warn!(
                     "Cannot import task {} (importing enqueued tasks from v1 dumps is unsupported)",
                     content.update_id
                 );
-                log::warn!("Task will be skipped in the queue of imported tasks.");
+                tracing::warn!("Task will be skipped in the queue of imported tasks.");
 
                 return None;
             }
@@ -229,7 +229,7 @@ impl From<v1::update::UpdateType> for Option<v2::updates::UpdateMeta> {
         Some(match source {
             v1::update::UpdateType::ClearAll => v2::updates::UpdateMeta::ClearDocuments,
             v1::update::UpdateType::Customs => {
-                log::warn!("Ignoring task with type 'Customs' that is no longer supported");
+                tracing::warn!("Ignoring task with type 'Customs' that is no longer supported");
                 return None;
             }
             v1::update::UpdateType::DocumentsAddition { .. } => {
@@ -296,7 +296,7 @@ impl From<v1::settings::RankingRule> for Option<v2::settings::Criterion> {
             v1::settings::RankingRule::Proximity => Some(v2::settings::Criterion::Proximity),
             v1::settings::RankingRule::Attribute => Some(v2::settings::Criterion::Attribute),
             v1::settings::RankingRule::WordsPosition => {
-                log::warn!("Removing the 'WordsPosition' ranking rule that is no longer supported, please check the resulting ranking rules of your indexes");
+                tracing::warn!("Removing the 'WordsPosition' ranking rule that is no longer supported, please check the resulting ranking rules of your indexes");
                 None
             }
             v1::settings::RankingRule::Exactness => Some(v2::settings::Criterion::Exactness),

dump/src/reader/compat/v2_to_v3.rs

@@ -146,8 +146,8 @@ impl From<v2::updates::UpdateStatus> for v3::updates::UpdateStatus {
                         started_processing_at: processing.started_processing_at,
                     }),
                     Err(e) => {
-                        log::warn!("Error with task {}: {}", processing.from.update_id, e);
+                        tracing::warn!("Error with task {}: {}", processing.from.update_id, e);
-                        log::warn!("Task will be marked as `Failed`.");
+                        tracing::warn!("Task will be marked as `Failed`.");
                         v3::updates::UpdateStatus::Failed(v3::updates::Failed {
                             from: v3::updates::Processing {
                                 from: v3::updates::Enqueued {
@@ -172,8 +172,8 @@ impl From<v2::updates::UpdateStatus> for v3::updates::UpdateStatus {
                         enqueued_at: enqueued.enqueued_at,
                     }),
                     Err(e) => {
-                        log::warn!("Error with task {}: {}", enqueued.update_id, e);
+                        tracing::warn!("Error with task {}: {}", enqueued.update_id, e);
-                        log::warn!("Task will be marked as `Failed`.");
+                        tracing::warn!("Task will be marked as `Failed`.");
                         v3::updates::UpdateStatus::Failed(v3::updates::Failed {
                             from: v3::updates::Processing {
                                 from: v3::updates::Enqueued {
@@ -353,7 +353,7 @@ impl From<String> for v3::Code {
             "malformed_payload" => v3::Code::MalformedPayload,
             "missing_payload" => v3::Code::MissingPayload,
             other => {
-                log::warn!("Unknown error code {}", other);
+                tracing::warn!("Unknown error code {}", other);
                 v3::Code::UnretrievableErrorCode
             }
         }

dump/src/reader/compat/v3_to_v4.rs

@@ -76,20 +76,20 @@ impl CompatV3ToV4 {
                         let index_uid = match index_uid {
                             Some(uid) => uid,
                             None => {
-                                log::warn!(
+                                tracing::warn!(
                                     "Error while importing the update {}.",
                                     task.update.id()
                                 );
-                                log::warn!(
+                                tracing::warn!(
                                     "The index associated to the uuid `{}` could not be retrieved.",
                                     task.uuid.to_string()
                                 );
                                 if task.update.is_finished() {
                                     // we're fucking with his history but not his data, that's ok-ish.
-                                    log::warn!("The index-uuid will be set as `unknown`.");
+                                    tracing::warn!("The index-uuid will be set as `unknown`.");
                                     String::from("unknown")
                                 } else {
-                                    log::warn!("The task will be ignored.");
+                                    tracing::warn!("The task will be ignored.");
                                     return None;
                                 }
                             }

dump/src/reader/compat/v4_to_v5.rs

@@ -305,7 +305,7 @@ impl From<v4::ResponseError> for v5::ResponseError {
             "invalid_api_key_expires_at" => v5::Code::InvalidApiKeyExpiresAt,
             "invalid_api_key_description" => v5::Code::InvalidApiKeyDescription,
             other => {
-                log::warn!("Unknown error code {}", other);
+                tracing::warn!("Unknown error code {}", other);
                 v5::Code::UnretrievableErrorCode
             }
         };

dump/src/reader/compat/v5_to_v6.rs

@@ -304,7 +304,7 @@ impl From<v5::ResponseError> for v6::ResponseError {
             "immutable_field" => v6::Code::BadRequest,
             "api_key_already_exists" => v6::Code::ApiKeyAlreadyExists,
             other => {
-                log::warn!("Unknown error code {}", other);
+                tracing::warn!("Unknown error code {}", other);
                 v6::Code::UnretrievableErrorCode
             }
         };
@@ -329,7 +329,7 @@ impl<T> From<v5::Settings<T>> for v6::Settings<v6::Unchecked> {
                                     new_ranking_rules.push(new_rule);
                                 }
                                 Err(_) => {
-                                    log::warn!("Error while importing settings. The ranking rule `{rule}` does not exist anymore.")
+                                    tracing::warn!("Error while importing settings. The ranking rule `{rule}` does not exist anymore.")
                                 }
                             }
                         }

dump/src/reader/v6/mod.rs

@@ -2,10 +2,10 @@ use std::fs::{self, File};
 use std::io::{BufRead, BufReader, ErrorKind};
 use std::path::Path;
 
-use log::debug;
 pub use meilisearch_types::milli;
 use tempfile::TempDir;
 use time::OffsetDateTime;
+use tracing::debug;
 use uuid::Uuid;
 
 use super::Document;

file-store/src/lib.rs

@@ -1,5 +1,5 @@
 use std::fs::File as StdFile;
-use std::ops::{Deref, DerefMut};
+use std::io::Write;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
 
@@ -22,20 +22,6 @@ pub enum Error {
 
 pub type Result<T> = std::result::Result<T, Error>;
 
-impl Deref for File {
-    type Target = NamedTempFile;
-
-    fn deref(&self) -> &Self::Target {
-        &self.file
-    }
-}
-
-impl DerefMut for File {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.file
-    }
-}
-
 #[derive(Clone, Debug)]
 pub struct FileStore {
     path: PathBuf,
@@ -56,7 +42,7 @@ impl FileStore {
         let file = NamedTempFile::new_in(&self.path)?;
         let uuid = Uuid::new_v4();
         let path = self.path.join(uuid.to_string());
-        let update_file = File { file, path };
+        let update_file = File { file: Some(file), path };
 
         Ok((uuid, update_file))
     }
@@ -67,7 +53,7 @@ impl FileStore {
         let file = NamedTempFile::new_in(&self.path)?;
         let uuid = Uuid::from_u128(uuid);
         let path = self.path.join(uuid.to_string());
-        let update_file = File { file, path };
+        let update_file = File { file: Some(file), path };
 
         Ok((uuid, update_file))
     }
@@ -136,16 +122,40 @@ impl FileStore {
 
 pub struct File {
     path: PathBuf,
-    file: NamedTempFile,
+    file: Option<NamedTempFile>,
 }
 
 impl File {
+    pub fn dry_file() -> Result<Self> {
+        Ok(Self { path: PathBuf::new(), file: None })
+    }
+
     pub fn persist(self) -> Result<()> {
-        self.file.persist(&self.path)?;
+        if let Some(file) = self.file {
+            file.persist(&self.path)?;
+        }
         Ok(())
     }
 }
 
+impl Write for File {
+    fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
+        if let Some(file) = self.file.as_mut() {
+            file.write(buf)
+        } else {
+            Ok(buf.len())
+        }
+    }
+
+    fn flush(&mut self) -> std::io::Result<()> {
+        if let Some(file) = self.file.as_mut() {
+            file.flush()
+        } else {
+            Ok(())
+        }
+    }
+}
+
 #[cfg(test)]
 mod test {
     use std::io::Write;

index-scheduler/Cargo.toml

@@ -19,7 +19,6 @@ dump = { path = "../dump" }
 enum-iterator = "1.5.0"
 file-store = { path = "../file-store" }
 flate2 = "1.0.28"
-log = "0.4.20"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-types = { path = "../meilisearch-types" }
 page_size = "0.5.0"
@@ -30,7 +29,13 @@ serde_json = { version = "1.0.111", features = ["preserve_order"] }
 synchronoise = "1.0.1"
 tempfile = "3.9.0"
 thiserror = "1.0.56"
-time = { version = "0.3.31", features = ["serde-well-known", "formatting", "parsing", "macros"] }
+time = { version = "0.3.31", features = [
+    "serde-well-known",
+    "formatting",
+    "parsing",
+    "macros",
+] }
+tracing = "0.1.40"
 ureq = "2.9.1"
 uuid = { version = "1.6.1", features = ["serde", "v4"] }
 
@@ -39,4 +44,3 @@ big_s = "1.0.2"
 crossbeam = "0.8.4"
 insta = { version = "1.34.0", features = ["json", "redactions"] }
 meili-snap = { path = "../meili-snap" }
-nelson = { git = "https://github.com/meilisearch/nelson.git", rev = "675f13885548fb415ead8fbb447e9e6d9314000a"}

index-scheduler/src/batch.rs

@@ -24,7 +24,6 @@ use std::fs::{self, File};
 use std::io::BufWriter;
 
 use dump::IndexMetadata;
-use log::{debug, error, info, trace};
 use meilisearch_types::error::Code;
 use meilisearch_types::heed::{RoTxn, RwTxn};
 use meilisearch_types::milli::documents::{obkv_to_object, DocumentsBatchReader};
@@ -514,6 +513,7 @@ impl IndexScheduler {
     /// 3. We get the *next* snapshot to process.
     /// 4. We get the *next* dump to process.
     /// 5. We get the *next* tasks to process for a specific index.
+    #[tracing::instrument(level = "trace", skip(self, rtxn), target = "indexing::scheduler")]
     pub(crate) fn create_next_batch(&self, rtxn: &RoTxn) -> Result<Option<Batch>> {
         #[cfg(test)]
         self.maybe_fail(crate::tests::FailureLocation::InsideCreateBatch)?;
@@ -619,6 +619,7 @@ impl IndexScheduler {
     /// The list of tasks that were processed. The metadata of each task in the returned
     /// list is updated accordingly, with the exception of the its date fields
     /// [`finished_at`](meilisearch_types::tasks::Task::finished_at) and [`started_at`](meilisearch_types::tasks::Task::started_at).
+    #[tracing::instrument(level = "trace", skip(self, batch), target = "indexing::scheduler", fields(batch=batch.to_string()))]
     pub(crate) fn process_batch(&self, batch: Batch) -> Result<Vec<Task>> {
         #[cfg(test)]
         {
@@ -668,9 +669,10 @@ impl IndexScheduler {
                     Ok(()) => {
                         for content_uuid in canceled_tasks_content_uuids {
                             if let Err(error) = self.delete_update_file(content_uuid) {
-                                error!(
+                                tracing::error!(
-                                    "We failed deleting the content file indentified as {}: {}",
+                                    file_content_uuid = %content_uuid,
-                                    content_uuid, error
+                                    %error,
+                                    "Failed deleting content file"
                                 )
                             }
                         }
@@ -969,7 +971,10 @@ impl IndexScheduler {
 
                 match res {
                     Ok(_) => (),
-                    Err(e) => error!("Could not write the stats of the index {}", e),
+                    Err(e) => tracing::error!(
+                        error = &e as &dyn std::error::Error,
+                        "Could not write the stats of the index"
+                    ),
                 }
 
                 Ok(tasks)
@@ -997,7 +1002,7 @@ impl IndexScheduler {
                     builder.set_primary_key(primary_key);
                     let must_stop_processing = self.must_stop_processing.clone();
                     builder.execute(
-                        |indexing_step| debug!("update: {:?}", indexing_step),
+                        |indexing_step| tracing::debug!(update = ?indexing_step),
                         || must_stop_processing.get(),
                     )?;
                     index_wtxn.commit()?;
@@ -1024,7 +1029,10 @@ impl IndexScheduler {
 
                 match res {
                     Ok(_) => (),
-                    Err(e) => error!("Could not write the stats of the index {}", e),
+                    Err(e) => tracing::error!(
+                        error = &e as &dyn std::error::Error,
+                        "Could not write the stats of the index"
+                    ),
                 }
 
                 Ok(vec![task])
@@ -1143,6 +1151,11 @@ impl IndexScheduler {
     ///
     /// ## Return
     /// The list of processed tasks.
+    #[tracing::instrument(
+        level = "trace",
+        skip(self, index_wtxn, index),
+        target = "indexing::scheduler"
+    )]
     fn apply_index_operation<'i>(
         &self,
         index_wtxn: &mut RwTxn<'i>,
@@ -1203,7 +1216,7 @@ impl IndexScheduler {
                                 milli::update::Settings::new(index_wtxn, index, indexer_config);
                             builder.set_primary_key(primary_key);
                             builder.execute(
-                                |indexing_step| debug!("update: {:?}", indexing_step),
+                                |indexing_step| tracing::debug!(update = ?indexing_step),
                                 || must_stop_processing.clone().get(),
                             )?;
                             primary_key_has_been_set = true;
@@ -1222,7 +1235,7 @@ impl IndexScheduler {
                     index,
                     indexer_config,
                     config,
-                    |indexing_step| trace!("update: {:?}", indexing_step),
+                    |indexing_step| tracing::trace!(?indexing_step, "Update"),
                     || must_stop_processing.get(),
                 )?;
 
@@ -1294,7 +1307,7 @@ impl IndexScheduler {
 
                 if !tasks.iter().all(|res| res.error.is_some()) {
                     let addition = builder.execute()?;
-                    info!("document addition done: {:?}", addition);
+                    tracing::info!(indexing_result = ?addition, "document indexing done");
                 } else if primary_key_has_been_set {
                     // Everything failed but we've set a primary key.
                     // We need to remove it.
@@ -1302,7 +1315,7 @@ impl IndexScheduler {
                         milli::update::Settings::new(index_wtxn, index, indexer_config);
                     builder.reset_primary_key();
                     builder.execute(
-                        |indexing_step| trace!("update: {:?}", indexing_step),
+                        |indexing_step| tracing::trace!(update = ?indexing_step),
                         || must_stop_processing.clone().get(),
                     )?;
                 }
@@ -1372,7 +1385,7 @@ impl IndexScheduler {
 
                 let must_stop_processing = self.must_stop_processing.clone();
                 builder.execute(
-                    |indexing_step| debug!("update: {:?}", indexing_step),
+                    |indexing_step| tracing::debug!(update = ?indexing_step),
                     || must_stop_processing.get(),
                 )?;
 
@@ -1584,7 +1597,7 @@ fn delete_document_by_filter<'a>(
             index,
             indexer_config,
             config,
-            |indexing_step| debug!("update: {:?}", indexing_step),
+            |indexing_step| tracing::debug!(update = ?indexing_step),
             || must_stop_processing.get(),
         )?;
 

index-scheduler/src/error.rs

@@ -48,6 +48,8 @@ impl From<DateField> for Code {
 pub enum Error {
     #[error("{1}")]
     WithCustomErrorCode(Code, Box<Self>),
+    #[error("Received bad task id: {received} should be >= to {expected}.")]
+    BadTaskId { received: TaskId, expected: TaskId },
     #[error("Index `{0}` not found.")]
     IndexNotFound(String),
     #[error("Index `{0}` already exists.")]
@@ -161,6 +163,7 @@ impl Error {
         match self {
             Error::IndexNotFound(_)
             | Error::WithCustomErrorCode(_, _)
+            | Error::BadTaskId { .. }
             | Error::IndexAlreadyExists(_)
             | Error::SwapDuplicateIndexFound(_)
             | Error::SwapDuplicateIndexesFound(_)
@@ -205,6 +208,7 @@ impl ErrorCode for Error {
     fn error_code(&self) -> Code {
         match self {
             Error::WithCustomErrorCode(code, _) => *code,
+            Error::BadTaskId { .. } => Code::BadRequest,
             Error::IndexNotFound(_) => Code::IndexNotFound,
             Error::IndexAlreadyExists(_) => Code::IndexAlreadyExists,
             Error::SwapDuplicateIndexesFound(_) => Code::InvalidSwapDuplicateIndexFound,

index-scheduler/src/features.rs

@@ -30,19 +30,6 @@ impl RoFeatures {
         self.runtime
     }
 
-    pub fn check_score_details(&self) -> Result<()> {
-        if self.runtime.score_details {
-            Ok(())
-        } else {
-            Err(FeatureNotEnabledError {
-                disabled_action: "Computing score details",
-                feature: "score details",
-                issue_link: "https://github.com/meilisearch/product/discussions/674",
-            }
-            .into())
-        }
-    }
-
     pub fn check_metrics(&self) -> Result<()> {
         if self.runtime.metrics {
             Ok(())
@@ -56,6 +43,19 @@ impl RoFeatures {
         }
     }
 
+    pub fn check_logs_route(&self) -> Result<()> {
+        if self.runtime.logs_route {
+            Ok(())
+        } else {
+            Err(FeatureNotEnabledError {
+                disabled_action: "getting logs through the `/logs/stream` route",
+                feature: "logs route",
+                issue_link: "https://github.com/orgs/meilisearch/discussions/721",
+            }
+            .into())
+        }
+    }
+
     pub fn check_vector(&self, disabled_action: &'static str) -> Result<()> {
         if self.runtime.vector_store {
             Ok(())
@@ -94,6 +94,7 @@ impl FeatureData {
             runtime_features_db.get(&txn, EXPERIMENTAL_FEATURES)?.unwrap_or_default();
         let runtime = Arc::new(RwLock::new(RuntimeTogglableFeatures {
             metrics: instance_features.metrics || persisted_features.metrics,
+            logs_route: instance_features.logs_route || persisted_features.logs_route,
             ..persisted_features
         }));
 

index-scheduler/src/index_mapper/mod.rs

@@ -3,13 +3,13 @@ use std::sync::{Arc, RwLock};
 use std::time::Duration;
 use std::{fs, thread};
 
-use log::error;
 use meilisearch_types::heed::types::{SerdeJson, Str};
 use meilisearch_types::heed::{Database, Env, RoTxn, RwTxn};
 use meilisearch_types::milli::update::IndexerConfig;
 use meilisearch_types::milli::{FieldDistribution, Index};
 use serde::{Deserialize, Serialize};
 use time::OffsetDateTime;
+use tracing::error;
 use uuid::Uuid;
 
 use self::index_map::IndexMap;

index-scheduler/src/insta_snapshot.rs

@@ -15,6 +15,7 @@ pub fn snapshot_index_scheduler(scheduler: &IndexScheduler) -> String {
 
     let IndexScheduler {
         autobatching_enabled,
+        cleanup_enabled: _,
         must_stop_processing: _,
         processing_tasks,
         file_store,

index-scheduler/src/snapshots/lib.rs/test_disable_auto_deletion_of_tasks/task_deletion_have_not_been_enqueued.snap

@@ -0,0 +1,90 @@
+---
+source: index-scheduler/src/lib.rs
+---
+[
+  {
+    "uid": 0,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": null,
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "succeeded",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  },
+  {
+    "uid": 1,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": {
+      "message": "Index `doggo` already exists.",
+      "code": "index_already_exists",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#index_already_exists"
+    },
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "failed",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  },
+  {
+    "uid": 2,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": null,
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "enqueued",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  },
+  {
+    "uid": 3,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": null,
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "enqueued",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  }
+]

index-scheduler/src/snapshots/lib.rs/test_disable_auto_deletion_of_tasks/task_queue_is_full.snap

@@ -0,0 +1,90 @@
+---
+source: index-scheduler/src/lib.rs
+---
+[
+  {
+    "uid": 0,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": null,
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "succeeded",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  },
+  {
+    "uid": 1,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": {
+      "message": "Index `doggo` already exists.",
+      "code": "index_already_exists",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#index_already_exists"
+    },
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "failed",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  },
+  {
+    "uid": 2,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": null,
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "enqueued",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  },
+  {
+    "uid": 3,
+    "enqueuedAt": "[date]",
+    "startedAt": "[date]",
+    "finishedAt": "[date]",
+    "error": null,
+    "canceledBy": null,
+    "details": {
+      "IndexInfo": {
+        "primary_key": null
+      }
+    },
+    "status": "enqueued",
+    "kind": {
+      "indexCreation": {
+        "index_uid": "doggo",
+        "primary_key": null
+      }
+    }
+  }
+]

meilisearch-types/Cargo.toml

@@ -11,7 +11,7 @@ edition.workspace = true
 license.workspace = true
 
 [dependencies]
-actix-web = { version = "4.4.1", default-features = false }
+actix-web = { version = "4.5.1", default-features = false }
 anyhow = "1.0.79"
 convert_case = "0.6.0"
 csv = "1.3.0"

meilisearch-types/src/document_formats.rs

@@ -1,6 +1,6 @@
 use std::fmt::{self, Debug, Display};
 use std::fs::File;
-use std::io::{self, Seek, Write};
+use std::io::{self, BufWriter, Write};
 use std::marker::PhantomData;
 
 use memmap2::MmapOptions;
@@ -104,8 +104,8 @@ impl ErrorCode for DocumentFormatError {
 }
 
 /// Reads CSV from input and write an obkv batch to writer.
-pub fn read_csv(file: &File, writer: impl Write + Seek, delimiter: u8) -> Result<u64> {
+pub fn read_csv(file: &File, writer: impl Write, delimiter: u8) -> Result<u64> {
-    let mut builder = DocumentsBatchBuilder::new(writer);
+    let mut builder = DocumentsBatchBuilder::new(BufWriter::new(writer));
     let mmap = unsafe { MmapOptions::new().map(file)? };
     let csv = csv::ReaderBuilder::new().delimiter(delimiter).from_reader(mmap.as_ref());
     builder.append_csv(csv).map_err(|e| (PayloadType::Csv { delimiter }, e))?;
@@ -117,8 +117,8 @@ pub fn read_csv(file: &File, writer: impl Write + Seek, delimiter: u8) -> Result
 }
 
 /// Reads JSON from temporary file and write an obkv batch to writer.
-pub fn read_json(file: &File, writer: impl Write + Seek) -> Result<u64> {
+pub fn read_json(file: &File, writer: impl Write) -> Result<u64> {
-    let mut builder = DocumentsBatchBuilder::new(writer);
+    let mut builder = DocumentsBatchBuilder::new(BufWriter::new(writer));
     let mmap = unsafe { MmapOptions::new().map(file)? };
     let mut deserializer = serde_json::Deserializer::from_slice(&mmap);
 
@@ -151,8 +151,8 @@ pub fn read_json(file: &File, writer: impl Write + Seek) -> Result<u64> {
 }
 
 /// Reads JSON from temporary file  and write an obkv batch to writer.
-pub fn read_ndjson(file: &File, writer: impl Write + Seek) -> Result<u64> {
+pub fn read_ndjson(file: &File, writer: impl Write) -> Result<u64> {
-    let mut builder = DocumentsBatchBuilder::new(writer);
+    let mut builder = DocumentsBatchBuilder::new(BufWriter::new(writer));
     let mmap = unsafe { MmapOptions::new().map(file)? };
 
     for result in serde_json::Deserializer::from_slice(&mmap).into_iter() {

meilisearch-types/src/error.rs

@@ -310,6 +310,8 @@ TooManyVectors                        , InvalidRequest       , BAD_REQUEST ;
 UnretrievableDocument                 , Internal             , BAD_REQUEST ;
 UnretrievableErrorCode                , InvalidRequest       , BAD_REQUEST ;
 UnsupportedMediaType                  , InvalidRequest       , UNSUPPORTED_MEDIA_TYPE ;
+
+// Experimental features
 VectorEmbeddingError                  , InvalidRequest       , BAD_REQUEST
 }
 
@@ -347,6 +349,9 @@ impl ErrorCode for milli::Error {
                     UserError::InvalidFieldForSource { .. }
                     | UserError::MissingFieldForSource { .. }
                     | UserError::InvalidOpenAiModel { .. }
+                    | UserError::InvalidOpenAiModelDimensions { .. }
+                    | UserError::InvalidOpenAiModelDimensionsMax { .. }
+                    | UserError::InvalidSettingsDimensions { .. }
                     | UserError::InvalidPrompt(_) => Code::InvalidSettingsEmbedders,
                     UserError::TooManyEmbedders(_) => Code::InvalidSettingsEmbedders,
                     UserError::InvalidPromptForEmbeddings(..) => Code::InvalidSettingsEmbedders,

meilisearch-types/src/features.rs

@@ -3,13 +3,14 @@ use serde::{Deserialize, Serialize};
 #[derive(Serialize, Deserialize, Debug, Clone, Copy, Default, PartialEq, Eq)]
 #[serde(rename_all = "camelCase", default)]
 pub struct RuntimeTogglableFeatures {
-    pub score_details: bool,
     pub vector_store: bool,
     pub metrics: bool,
+    pub logs_route: bool,
     pub export_puffin_reports: bool,
 }
 
 #[derive(Default, Debug, Clone, Copy)]
 pub struct InstanceTogglableFeatures {
     pub metrics: bool,
+    pub logs_route: bool,
 }

meilisearch/Cargo.toml

@@ -14,18 +14,18 @@ default-run = "meilisearch"
 
 [dependencies]
 actix-cors = "0.7.0"
-actix-http = { version = "3.5.1", default-features = false, features = [
+actix-http = { version = "3.6.0", default-features = false, features = [
     "compress-brotli",
     "compress-gzip",
-    "rustls",
+    "rustls-0_21",
 ] }
 actix-utils = "3.0.1"
-actix-web = { version = "4.4.1", default-features = false, features = [
+actix-web = { version = "4.5.1", default-features = false, features = [
     "macros",
     "compress-brotli",
     "compress-gzip",
     "cookies",
-    "rustls",
+    "rustls-0_21",
 ] }
 actix-web-static-files = { git = "https://github.com/kilork/actix-web-static-files.git", rev = "2d3b6160", optional = true }
 anyhow = { version = "1.0.79", features = ["backtrace"] }
@@ -42,7 +42,6 @@ crossbeam-channel = "0.5.11"
 deserr = { version = "0.6.1", features = ["actix-web"] }
 dump = { path = "../dump" }
 either = "1.9.0"
-env_logger = "0.10.1"
 file-store = { path = "../file-store" }
 flate2 = "1.0.28"
 fst = "0.4.7"
@@ -53,9 +52,8 @@ index-scheduler = { path = "../index-scheduler" }
 indexmap = { version = "2.1.0", features = ["serde"] }
 is-terminal = "0.4.10"
 itertools = "0.11.0"
-jsonwebtoken = "8.3.0"
+jsonwebtoken = "9.2.0"
 lazy_static = "1.4.0"
-log = "0.4.20"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-types = { path = "../meilisearch-types" }
 mimalloc = { version = "0.1.39", default-features = false }
@@ -77,7 +75,7 @@ reqwest = { version = "0.11.23", features = [
     "rustls-tls",
     "json",
 ], default-features = false }
-rustls = "0.20.8"
+rustls = "0.21.6"
 rustls-pemfile = "1.0.2"
 segment = { version = "0.2.3", optional = true }
 serde = { version = "1.0.195", features = ["derive"] }
@@ -105,6 +103,10 @@ yaup = "0.2.1"
 serde_urlencoded = "0.7.1"
 termcolor = "1.4.1"
 url = { version = "2.5.0", features = ["serde"] }
+tracing = "0.1.40"
+tracing-subscriber = "0.3.18"
+tracing-trace = { version = "0.1.0", path = "../tracing-trace" }
+tracing-actix-web = "0.7.9"
 
 [dev-dependencies]
 actix-rt = "2.9.0"

meilisearch/src/analytics/segment_analytics.rs

@@ -250,6 +250,8 @@ impl super::Analytics for SegmentAnalytics {
 struct Infos {
     env: String,
     experimental_enable_metrics: bool,
+    experimental_replication_parameters: bool,
+    experimental_enable_logs_route: bool,
     experimental_reduce_indexing_memory_usage: bool,
     experimental_max_number_of_batched_tasks: usize,
     db_path: bool,
@@ -287,6 +289,8 @@ impl From<Opt> for Infos {
         let Opt {
             db_path,
             experimental_enable_metrics,
+            experimental_replication_parameters,
+            experimental_enable_logs_route,
             experimental_reduce_indexing_memory_usage,
             experimental_max_number_of_batched_tasks,
             http_addr,
@@ -333,6 +337,8 @@ impl From<Opt> for Infos {
         Self {
             env,
             experimental_enable_metrics,
+            experimental_replication_parameters,
+            experimental_enable_logs_route,
             experimental_reduce_indexing_memory_usage,
             db_path: db_path != PathBuf::from("./data.ms"),
             import_dump: import_dump.is_some(),

meilisearch/src/error.rs

@@ -12,6 +12,8 @@ pub enum MeilisearchHttpError {
     #[error("A Content-Type header is missing. Accepted values for the Content-Type header are: {}",
             .0.iter().map(|s| format!("`{}`", s)).collect::<Vec<_>>().join(", "))]
     MissingContentType(Vec<String>),
+    #[error("The `/logs/stream` route is currently in use by someone else.")]
+    AlreadyUsedLogRoute,
     #[error("The Content-Type `{0}` does not support the use of a csv delimiter. The csv delimiter can only be used with the Content-Type `text/csv`.")]
     CsvDelimiterWithWrongContentType(String),
     #[error(
@@ -59,6 +61,7 @@ impl ErrorCode for MeilisearchHttpError {
     fn error_code(&self) -> Code {
         match self {
             MeilisearchHttpError::MissingContentType(_) => Code::MissingContentType,
+            MeilisearchHttpError::AlreadyUsedLogRoute => Code::BadRequest,
             MeilisearchHttpError::CsvDelimiterWithWrongContentType(_) => Code::InvalidContentType,
             MeilisearchHttpError::MissingPayload(_) => Code::MissingPayload,
             MeilisearchHttpError::InvalidContentType(_, _) => Code::InvalidContentType,

meilisearch/src/extractors/sequential_extractor.rs

@@ -131,6 +131,7 @@ gen_seq! { SeqFromRequestFut3; A B C }
 gen_seq! { SeqFromRequestFut4; A B C D }
 gen_seq! { SeqFromRequestFut5; A B C D E }
 gen_seq! { SeqFromRequestFut6; A B C D E F }
+gen_seq! { SeqFromRequestFut7; A B C D E F G }
 
 pin_project! {
     #[project = ExtractProj]

meilisearch/src/lib.rs

@@ -29,7 +29,6 @@ use error::PayloadError;
 use extractors::payload::PayloadConfig;
 use http::header::CONTENT_TYPE;
 use index_scheduler::{IndexScheduler, IndexSchedulerOptions};
-use log::error;
 use meilisearch_auth::AuthController;
 use meilisearch_types::milli::documents::{DocumentsBatchBuilder, DocumentsBatchReader};
 use meilisearch_types::milli::update::{IndexDocumentsConfig, IndexDocumentsMethod};
@@ -39,6 +38,8 @@ use meilisearch_types::versioning::{check_version_file, create_version_file};
 use meilisearch_types::{compression, milli, VERSION_FILE_NAME};
 pub use option::Opt;
 use option::ScheduleSnapshot;
+use tracing::{error, info_span};
+use tracing_subscriber::filter::Targets;
 
 use crate::error::MeilisearchHttpError;
 
@@ -86,10 +87,21 @@ fn is_empty_db(db_path: impl AsRef<Path>) -> bool {
     }
 }
 
+/// The handle used to update the logs at runtime. Must be accessible from the `main.rs` and the `route/logs.rs`.
+pub type LogRouteHandle =
+    tracing_subscriber::reload::Handle<LogRouteType, tracing_subscriber::Registry>;
+
+pub type LogRouteType = tracing_subscriber::filter::Filtered<
+    Option<Box<dyn tracing_subscriber::Layer<tracing_subscriber::Registry> + Send + Sync>>,
+    Targets,
+    tracing_subscriber::Registry,
+>;
+
 pub fn create_app(
     index_scheduler: Data<IndexScheduler>,
     auth_controller: Data<AuthController>,
     opt: Opt,
+    logs: LogRouteHandle,
     analytics: Arc<dyn Analytics>,
     enable_dashboard: bool,
 ) -> actix_web::App<
@@ -108,6 +120,7 @@ pub fn create_app(
                 index_scheduler.clone(),
                 auth_controller.clone(),
                 &opt,
+                logs,
                 analytics.clone(),
             )
         })
@@ -123,11 +136,49 @@ pub fn create_app(
             .allow_any_method()
             .max_age(86_400), // 24h
     )
-    .wrap(actix_web::middleware::Logger::default())
+    .wrap(tracing_actix_web::TracingLogger::<AwebTracingLogger>::new())
     .wrap(actix_web::middleware::Compress::default())
     .wrap(actix_web::middleware::NormalizePath::new(actix_web::middleware::TrailingSlash::Trim))
 }
 
+struct AwebTracingLogger;
+
+impl tracing_actix_web::RootSpanBuilder for AwebTracingLogger {
+    fn on_request_start(request: &actix_web::dev::ServiceRequest) -> tracing::Span {
+        use tracing::field::Empty;
+
+        let conn_info = request.connection_info();
+        let headers = request.headers();
+        let user_agent = headers
+            .get(http::header::USER_AGENT)
+            .map(|value| String::from_utf8_lossy(value.as_bytes()).into_owned())
+            .unwrap_or_default();
+        info_span!("HTTP request", method = %request.method(), host = conn_info.host(), route = %request.path(), query_parameters = %request.query_string(), %user_agent, status_code = Empty, error = Empty)
+    }
+
+    fn on_request_end<B: MessageBody>(
+        span: tracing::Span,
+        outcome: &Result<ServiceResponse<B>, actix_web::Error>,
+    ) {
+        match &outcome {
+            Ok(response) => {
+                let code: i32 = response.response().status().as_u16().into();
+                span.record("status_code", code);
+
+                if let Some(error) = response.response().error() {
+                    // use the status code already constructed for the outgoing HTTP response
+                    span.record("error", &tracing::field::display(error.as_response_error()));
+                }
+            }
+            Err(error) => {
+                let code: i32 = error.error_response().status().as_u16().into();
+                span.record("status_code", code);
+                span.record("error", &tracing::field::display(error.as_response_error()));
+            }
+        };
+    }
+}
+
 enum OnFailure {
     RemoveDb,
     KeepDb,
@@ -200,7 +251,9 @@ pub fn setup_meilisearch(opt: &Opt) -> anyhow::Result<(Arc<IndexScheduler>, Arc<
             .name(String::from("register-snapshot-tasks"))
             .spawn(move || loop {
                 thread::sleep(snapshot_delay);
-                if let Err(e) = index_scheduler.register(KindWithContent::SnapshotCreation) {
+                if let Err(e) =
+                    index_scheduler.register(KindWithContent::SnapshotCreation, None, false)
+                {
                     error!("Error while registering snapshot: {}", e);
                 }
             })
@@ -235,6 +288,7 @@ fn open_or_create_database_unchecked(
             enable_mdb_writemap: opt.experimental_reduce_indexing_memory_usage,
             indexer_config: (&opt.indexer_options).try_into()?,
             autobatching_enabled: true,
+            cleanup_enabled: !opt.experimental_replication_parameters,
             max_number_of_tasks: 1_000_000,
             max_number_of_batched_tasks: opt.experimental_max_number_of_batched_tasks,
             index_growth_amount: byte_unit::Byte::from_str("10GiB").unwrap().get_bytes() as usize,
@@ -280,15 +334,15 @@ fn import_dump(
     let mut dump_reader = dump::DumpReader::open(reader)?;
 
     if let Some(date) = dump_reader.date() {
-        log::info!(
+        tracing::info!(
-            "Importing a dump of meilisearch `{:?}` from the {}",
+            version = ?dump_reader.version(), // TODO: get the meilisearch version instead of the dump version
-            dump_reader.version(), // TODO: get the meilisearch version instead of the dump version
+            %date,
-            date
+            "Importing a dump of meilisearch"
         );
     } else {
-        log::info!(
+        tracing::info!(
-            "Importing a dump of meilisearch `{:?}`",
+            version = ?dump_reader.version(), // TODO: get the meilisearch version instead of the dump version
-            dump_reader.version(), // TODO: get the meilisearch version instead of the dump version
+            "Importing a dump of meilisearch",
         );
     }
 
@@ -322,7 +376,7 @@ fn import_dump(
     for index_reader in dump_reader.indexes()? {
         let mut index_reader = index_reader?;
         let metadata = index_reader.metadata();
-        log::info!("Importing index `{}`.", metadata.uid);
+        tracing::info!("Importing index `{}`.", metadata.uid);
 
         let date = Some((metadata.created_at, metadata.updated_at));
         let index = index_scheduler.create_raw_index(&metadata.uid, date)?;
@@ -336,14 +390,15 @@ fn import_dump(
         }
 
         // 4.2 Import the settings.
-        log::info!("Importing the settings.");
+        tracing::info!("Importing the settings.");
         let settings = index_reader.settings()?;
         apply_settings_to_builder(&settings, &mut builder);
-        builder.execute(|indexing_step| log::debug!("update: {:?}", indexing_step), || false)?;
+        builder
+            .execute(|indexing_step| tracing::debug!("update: {:?}", indexing_step), || false)?;
 
         // 4.3 Import the documents.
         // 4.3.1 We need to recreate the grenad+obkv format accepted by the index.
-        log::info!("Importing the documents.");
+        tracing::info!("Importing the documents.");
         let file = tempfile::tempfile()?;
         let mut builder = DocumentsBatchBuilder::new(BufWriter::new(file));
         for document in index_reader.documents()? {
@@ -365,15 +420,16 @@ fn import_dump(
                 update_method: IndexDocumentsMethod::ReplaceDocuments,
                 ..Default::default()
             },
-            |indexing_step| log::trace!("update: {:?}", indexing_step),
+            |indexing_step| tracing::trace!("update: {:?}", indexing_step),
             || false,
         )?;
 
         let (builder, user_result) = builder.add_documents(reader)?;
-        log::info!("{} documents found.", user_result?);
+        let user_result = user_result?;
+        tracing::info!(documents_found = user_result, "{} documents found.", user_result);
         builder.execute()?;
         wtxn.commit()?;
-        log::info!("All documents successfully imported.");
+        tracing::info!("All documents successfully imported.");
     }
 
     let mut index_scheduler_dump = index_scheduler.register_dumped_task()?;
@@ -391,6 +447,7 @@ pub fn configure_data(
     index_scheduler: Data<IndexScheduler>,
     auth: Data<AuthController>,
     opt: &Opt,
+    logs: LogRouteHandle,
     analytics: Arc<dyn Analytics>,
 ) {
     let http_payload_size_limit = opt.http_payload_size_limit.get_bytes() as usize;
@@ -398,6 +455,8 @@ pub fn configure_data(
         .app_data(index_scheduler)
         .app_data(auth)
         .app_data(web::Data::from(analytics))
+        .app_data(web::Data::new(logs))
+        .app_data(web::Data::new(opt.clone()))
         .app_data(
             web::JsonConfig::default()
                 .limit(http_payload_size_limit)

meilisearch/src/main.rs

@@ -1,6 +1,7 @@
 use std::env;
 use std::io::{stderr, Write};
 use std::path::PathBuf;
+use std::str::FromStr;
 use std::sync::Arc;
 
 use actix_web::http::KeepAlive;
@@ -9,37 +10,60 @@ use actix_web::HttpServer;
 use index_scheduler::IndexScheduler;
 use is_terminal::IsTerminal;
 use meilisearch::analytics::Analytics;
-use meilisearch::{analytics, create_app, prototype_name, setup_meilisearch, Opt};
+use meilisearch::{
+    analytics, create_app, prototype_name, setup_meilisearch, LogRouteHandle, LogRouteType, Opt,
+};
 use meilisearch_auth::{generate_master_key, AuthController, MASTER_KEY_MIN_SIZE};
+use mimalloc::MiMalloc;
 use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor};
+use tracing::level_filters::LevelFilter;
+use tracing_subscriber::layer::SubscriberExt as _;
+use tracing_subscriber::Layer;
 
 #[global_allocator]
-static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
+static ALLOC: MiMalloc = MiMalloc;
+
+fn default_layer() -> LogRouteType {
+    None.with_filter(tracing_subscriber::filter::Targets::new().with_target("", LevelFilter::OFF))
+}
 
 /// does all the setup before meilisearch is launched
-fn setup(opt: &Opt) -> anyhow::Result<()> {
+fn setup(opt: &Opt) -> anyhow::Result<LogRouteHandle> {
-    let mut log_builder = env_logger::Builder::new();
+    let (route_layer, route_layer_handle) = tracing_subscriber::reload::Layer::new(default_layer());
-    let log_filters = format!(
+    let route_layer: tracing_subscriber::reload::Layer<_, _> = route_layer;
-        "{},h2=warn,hyper=warn,tokio_util=warn,tracing=warn,rustls=warn,mio=warn,reqwest=warn",
+
-        opt.log_level
+    let subscriber = tracing_subscriber::registry().with(route_layer).with(
+        tracing_subscriber::fmt::layer()
+            .with_span_events(tracing_subscriber::fmt::format::FmtSpan::CLOSE)
+            .with_filter(
+                tracing_subscriber::filter::LevelFilter::from_str(&opt.log_level.to_string())
+                    .unwrap(),
+            ),
     );
-    log_builder.parse_filters(&log_filters);
 
-    log_builder.init();
+    // set the subscriber as the default for the application
+    tracing::subscriber::set_global_default(subscriber).unwrap();
 
-    Ok(())
+    Ok(route_layer_handle)
+}
+
+fn on_panic(info: &std::panic::PanicInfo) {
+    let info = info.to_string().replace('\n', " ");
+    tracing::error!(%info);
 }
 
 #[actix_web::main]
 async fn main() -> anyhow::Result<()> {
     let (opt, config_read_from) = Opt::try_build()?;
 
+    std::panic::set_hook(Box::new(on_panic));
+
     anyhow::ensure!(
         !(cfg!(windows) && opt.experimental_reduce_indexing_memory_usage),
         "The `experimental-reduce-indexing-memory-usage` flag is not supported on Windows"
     );
 
-    setup(&opt)?;
+    let log_handle = setup(&opt)?;
 
     match (opt.env.as_ref(), &opt.master_key) {
         ("production", Some(master_key)) if master_key.len() < MASTER_KEY_MIN_SIZE => {
@@ -77,7 +101,7 @@ async fn main() -> anyhow::Result<()> {
 
     print_launch_resume(&opt, analytics.clone(), config_read_from);
 
-    run_http(index_scheduler, auth_controller, opt, analytics).await?;
+    run_http(index_scheduler, auth_controller, opt, log_handle, analytics).await?;
 
     Ok(())
 }
@@ -86,6 +110,7 @@ async fn run_http(
     index_scheduler: Arc<IndexScheduler>,
     auth_controller: Arc<AuthController>,
     opt: Opt,
+    logs: LogRouteHandle,
     analytics: Arc<dyn Analytics>,
 ) -> anyhow::Result<()> {
     let enable_dashboard = &opt.env == "development";
@@ -98,6 +123,7 @@ async fn run_http(
             index_scheduler.clone(),
             auth_controller.clone(),
             opt.clone(),
+            logs.clone(),
             analytics.clone(),
             enable_dashboard,
         )
@@ -107,7 +133,7 @@ async fn run_http(
     .keep_alive(KeepAlive::Os);
 
     if let Some(config) = opt_clone.get_ssl_config()? {
-        http_server.bind_rustls(opt_clone.http_addr, config)?.run().await?;
+        http_server.bind_rustls_021(opt_clone.http_addr, config)?.run().await?;
     } else {
         http_server.bind(&opt_clone.http_addr)?.run().await?;
     }

meilisearch/src/option.rs

@@ -51,6 +51,8 @@ const MEILI_IGNORE_MISSING_DUMP: &str = "MEILI_IGNORE_MISSING_DUMP";
 const MEILI_IGNORE_DUMP_IF_DB_EXISTS: &str = "MEILI_IGNORE_DUMP_IF_DB_EXISTS";
 const MEILI_DUMP_DIR: &str = "MEILI_DUMP_DIR";
 const MEILI_LOG_LEVEL: &str = "MEILI_LOG_LEVEL";
+const MEILI_EXPERIMENTAL_REPLICATION_PARAMETERS: &str = "MEILI_EXPERIMENTAL_REPLICATION_PARAMETERS";
+const MEILI_EXPERIMENTAL_ENABLE_LOGS_ROUTE: &str = "MEILI_EXPERIMENTAL_ENABLE_LOGS_ROUTE";
 const MEILI_EXPERIMENTAL_ENABLE_METRICS: &str = "MEILI_EXPERIMENTAL_ENABLE_METRICS";
 const MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE: &str =
     "MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE";
@@ -309,6 +311,23 @@ pub struct Opt {
     #[serde(default)]
     pub experimental_enable_metrics: bool,
 
+    /// Experimental logs route feature. For more information, see: <https://github.com/orgs/meilisearch/discussions/721>
+    ///
+    /// Enables the log route on the `POST /logs/stream` endpoint and the `DELETE /logs/stream` to stop receiving logs.
+    #[clap(long, env = MEILI_EXPERIMENTAL_ENABLE_LOGS_ROUTE)]
+    #[serde(default)]
+    pub experimental_enable_logs_route: bool,
+
+    /// Enable multiple features that helps you to run meilisearch in a replicated context.
+    /// For more information, see: <https://github.com/orgs/meilisearch/discussions/725>
+    ///
+    /// - /!\ Disable the automatic clean up of old processed tasks, you're in charge of that now
+    /// - Lets you specify a custom task ID upon registering a task
+    /// - Lets you execute dry-register a task (get an answer from the route but nothing is actually registered in meilisearch and it won't be processed)
+    #[clap(long, env = MEILI_EXPERIMENTAL_REPLICATION_PARAMETERS)]
+    #[serde(default)]
+    pub experimental_replication_parameters: bool,
+
     /// Experimental RAM reduction during indexing, do not use in production, see: <https://github.com/meilisearch/product/discussions/652>
     #[clap(long, env = MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE)]
     #[serde(default)]
@@ -414,6 +433,8 @@ impl Opt {
             #[cfg(feature = "analytics")]
             no_analytics,
             experimental_enable_metrics,
+            experimental_enable_logs_route,
+            experimental_replication_parameters,
             experimental_reduce_indexing_memory_usage,
         } = self;
         export_to_env_if_not_present(MEILI_DB_PATH, db_path);
@@ -470,6 +491,14 @@ impl Opt {
             MEILI_EXPERIMENTAL_ENABLE_METRICS,
             experimental_enable_metrics.to_string(),
         );
+        export_to_env_if_not_present(
+            MEILI_EXPERIMENTAL_REPLICATION_PARAMETERS,
+            experimental_replication_parameters.to_string(),
+        );
+        export_to_env_if_not_present(
+            MEILI_EXPERIMENTAL_ENABLE_LOGS_ROUTE,
+            experimental_enable_logs_route.to_string(),
+        );
         export_to_env_if_not_present(
             MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE,
             experimental_reduce_indexing_memory_usage.to_string(),
@@ -490,11 +519,11 @@ impl Opt {
                     }
                     if self.ssl_require_auth {
                         let verifier = AllowAnyAuthenticatedClient::new(client_auth_roots);
-                        config.with_client_cert_verifier(verifier)
+                        config.with_client_cert_verifier(Arc::from(verifier))
                     } else {
                         let verifier =
                             AllowAnyAnonymousOrAuthenticatedClient::new(client_auth_roots);
-                        config.with_client_cert_verifier(verifier)
+                        config.with_client_cert_verifier(Arc::from(verifier))
                     }
                 }
                 None => config.with_no_client_auth(),
@@ -524,7 +553,10 @@ impl Opt {
     }
 
     pub(crate) fn to_instance_features(&self) -> InstanceTogglableFeatures {
-        InstanceTogglableFeatures { metrics: self.experimental_enable_metrics }
+        InstanceTogglableFeatures {
+            metrics: self.experimental_enable_metrics,
+            logs_route: self.experimental_enable_logs_route,
+        }
     }
 }
 

meilisearch/src/routes/dump.rs

@@ -1,17 +1,18 @@
 use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_auth::AuthController;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::tasks::KindWithContent;
 use serde_json::json;
+use tracing::debug;
 
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::GuardedData;
 use crate::extractors::sequential_extractor::SeqHandler;
-use crate::routes::SummarizedTaskView;
+use crate::routes::{get_task_id, is_dry_run, SummarizedTaskView};
+use crate::Opt;
 
 pub fn configure(cfg: &mut web::ServiceConfig) {
     cfg.service(web::resource("").route(web::post().to(SeqHandler(create_dump))));
@@ -21,6 +22,7 @@ pub async fn create_dump(
     index_scheduler: GuardedData<ActionPolicy<{ actions::DUMPS_CREATE }>, Data<IndexScheduler>>,
     auth_controller: GuardedData<ActionPolicy<{ actions::DUMPS_CREATE }>, Data<AuthController>>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     analytics.publish("Dump Created".to_string(), json!({}), Some(&req));
@@ -29,9 +31,13 @@ pub async fn create_dump(
         keys: auth_controller.list_keys()?,
         instance_uid: analytics.instance_uid().cloned(),
     };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Create dump");
     Ok(HttpResponse::Accepted().json(task))
 }

meilisearch/src/routes/features.rs

@@ -3,11 +3,11 @@ use actix_web::{HttpRequest, HttpResponse};
 use deserr::actix_web::AwebJson;
 use deserr::Deserr;
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_types::deserr::DeserrJsonError;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::keys::actions;
 use serde_json::json;
+use tracing::debug;
 
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::ActionPolicy;
@@ -33,20 +33,21 @@ async fn get_features(
     let features = index_scheduler.features();
 
     analytics.publish("Experimental features Seen".to_string(), json!(null), Some(&req));
-    debug!("returns: {:?}", features.runtime_features());
+    let features = features.runtime_features();
-    HttpResponse::Ok().json(features.runtime_features())
+    debug!(returns = ?features, "Get features");
+    HttpResponse::Ok().json(features)
 }
 
 #[derive(Debug, Deserr)]
 #[deserr(error = DeserrJsonError, rename_all = camelCase, deny_unknown_fields)]
 pub struct RuntimeTogglableFeatures {
-    #[deserr(default)]
-    pub score_details: Option<bool>,
     #[deserr(default)]
     pub vector_store: Option<bool>,
     #[deserr(default)]
     pub metrics: Option<bool>,
     #[deserr(default)]
+    pub logs_route: Option<bool>,
+    #[deserr(default)]
     pub export_puffin_reports: Option<bool>,
 }
 
@@ -60,12 +61,13 @@ async fn patch_features(
     analytics: Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let features = index_scheduler.features();
+    debug!(parameters = ?new_features, "Patch features");
 
     let old_features = features.runtime_features();
     let new_features = meilisearch_types::features::RuntimeTogglableFeatures {
-        score_details: new_features.0.score_details.unwrap_or(old_features.score_details),
         vector_store: new_features.0.vector_store.unwrap_or(old_features.vector_store),
         metrics: new_features.0.metrics.unwrap_or(old_features.metrics),
+        logs_route: new_features.0.logs_route.unwrap_or(old_features.logs_route),
         export_puffin_reports: new_features
             .0
             .export_puffin_reports
@@ -76,22 +78,23 @@ async fn patch_features(
     // the it renames to camelCase, which we don't want for analytics.
     // **Do not** ignore fields with `..` or `_` here, because we want to add them in the future.
     let meilisearch_types::features::RuntimeTogglableFeatures {
-        score_details,
         vector_store,
         metrics,
+        logs_route,
         export_puffin_reports,
     } = new_features;
 
     analytics.publish(
         "Experimental features Updated".to_string(),
         json!({
-            "score_details": score_details,
             "vector_store": vector_store,
             "metrics": metrics,
+            "logs_route": logs_route,
             "export_puffin_reports": export_puffin_reports,
         }),
         Some(&req),
     );
     index_scheduler.put_runtime_features(new_features)?;
+    debug!(returns = ?new_features, "Patch features");
     Ok(HttpResponse::Ok().json(new_features))
 }

meilisearch/src/routes/indexes/documents.rs

@@ -7,8 +7,7 @@ use bstr::ByteSlice as _;
 use deserr::actix_web::{AwebJson, AwebQueryParameter};
 use deserr::Deserr;
 use futures::StreamExt;
-use index_scheduler::IndexScheduler;
+use index_scheduler::{IndexScheduler, TaskId};
-use log::debug;
 use meilisearch_types::deserr::query_params::Param;
 use meilisearch_types::deserr::{DeserrJsonError, DeserrQueryParamError};
 use meilisearch_types::document_formats::{read_csv, read_json, read_ndjson, PayloadType};
@@ -28,6 +27,7 @@ use serde_json::Value;
 use tempfile::tempfile;
 use tokio::fs::File;
 use tokio::io::{AsyncSeekExt, AsyncWriteExt, BufWriter};
+use tracing::debug;
 
 use crate::analytics::{Analytics, DocumentDeletionKind, DocumentFetchKind};
 use crate::error::MeilisearchHttpError;
@@ -36,8 +36,11 @@ use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::GuardedData;
 use crate::extractors::payload::Payload;
 use crate::extractors::sequential_extractor::SeqHandler;
-use crate::routes::{PaginationView, SummarizedTaskView, PAGINATION_DEFAULT_LIMIT};
+use crate::routes::{
+    get_task_id, is_dry_run, PaginationView, SummarizedTaskView, PAGINATION_DEFAULT_LIMIT,
+};
 use crate::search::parse_filter;
+use crate::Opt;
 
 static ACCEPTED_CONTENT_TYPE: Lazy<Vec<String>> = Lazy::new(|| {
     vec!["application/json".to_string(), "application/x-ndjson".to_string(), "text/csv".to_string()]
@@ -101,6 +104,7 @@ pub async fn get_document(
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let DocumentParam { index_uid, document_id } = document_param.into_inner();
+    debug!(parameters = ?params, "Get document");
     let index_uid = IndexUid::try_from(index_uid)?;
 
     analytics.get_fetch_documents(&DocumentFetchKind::PerDocumentId, &req);
@@ -110,7 +114,7 @@ pub async fn get_document(
 
     let index = index_scheduler.index(&index_uid)?;
     let document = retrieve_document(&index, &document_id, attributes_to_retrieve)?;
-    debug!("returns: {:?}", document);
+    debug!(returns = ?document, "Get document");
     Ok(HttpResponse::Ok().json(document))
 }
 
@@ -118,6 +122,7 @@ pub async fn delete_document(
     index_scheduler: GuardedData<ActionPolicy<{ actions::DOCUMENTS_DELETE }>, Data<IndexScheduler>>,
     path: web::Path<DocumentParam>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let DocumentParam { index_uid, document_id } = path.into_inner();
@@ -129,8 +134,12 @@ pub async fn delete_document(
         index_uid: index_uid.to_string(),
         documents_ids: vec![document_id],
     };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
     debug!("returns: {:?}", task);
     Ok(HttpResponse::Accepted().json(task))
 }
@@ -168,9 +177,8 @@ pub async fn documents_by_query_post(
     req: HttpRequest,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    debug!("called with body: {:?}", body);
-
     let body = body.into_inner();
+    debug!(parameters = ?body, "Get documents POST");
 
     analytics.post_fetch_documents(
         &DocumentFetchKind::Normal {
@@ -191,7 +199,7 @@ pub async fn get_documents(
     req: HttpRequest,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    debug!("called with params: {:?}", params);
+    debug!(parameters = ?params, "Get documents GET");
 
     let BrowseQueryGet { limit, offset, fields, filter } = params.into_inner();
 
@@ -235,7 +243,7 @@ fn documents_by_query(
 
     let ret = PaginationView::new(offset, limit, total as usize, documents);
 
-    debug!("returns: {:?}", ret);
+    debug!(returns = ?ret, "Get documents");
     Ok(HttpResponse::Ok().json(ret))
 }
 
@@ -267,16 +275,19 @@ pub async fn replace_documents(
     params: AwebQueryParameter<UpdateDocumentsQuery, DeserrQueryParamError>,
     body: Payload,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
-    debug!("called with params: {:?}", params);
+    debug!(parameters = ?params, "Replace documents");
     let params = params.into_inner();
 
     analytics.add_documents(&params, index_scheduler.index(&index_uid).is_err(), &req);
 
     let allow_index_creation = index_scheduler.filters().allow_index_creation(&index_uid);
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task = document_addition(
         extract_mime_type(&req)?,
         index_scheduler,
@@ -285,9 +296,12 @@ pub async fn replace_documents(
         params.csv_delimiter,
         body,
         IndexDocumentsMethod::ReplaceDocuments,
+        uid,
+        dry_run,
         allow_index_creation,
     )
     .await?;
+    debug!(returns = ?task, "Replace documents");
 
     Ok(HttpResponse::Accepted().json(task))
 }
@@ -298,16 +312,19 @@ pub async fn update_documents(
     params: AwebQueryParameter<UpdateDocumentsQuery, DeserrQueryParamError>,
     body: Payload,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
-    debug!("called with params: {:?}", params);
     let params = params.into_inner();
+    debug!(parameters = ?params, "Update documents");
 
     analytics.update_documents(&params, index_scheduler.index(&index_uid).is_err(), &req);
 
     let allow_index_creation = index_scheduler.filters().allow_index_creation(&index_uid);
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task = document_addition(
         extract_mime_type(&req)?,
         index_scheduler,
@@ -316,9 +333,12 @@ pub async fn update_documents(
         params.csv_delimiter,
         body,
         IndexDocumentsMethod::UpdateDocuments,
+        uid,
+        dry_run,
         allow_index_creation,
     )
     .await?;
+    debug!(returns = ?task, "Update documents");
 
     Ok(HttpResponse::Accepted().json(task))
 }
@@ -332,6 +352,8 @@ async fn document_addition(
     csv_delimiter: Option<u8>,
     mut body: Payload,
     method: IndexDocumentsMethod,
+    task_id: Option<TaskId>,
+    dry_run: bool,
     allow_index_creation: bool,
 ) -> Result<SummarizedTaskView, MeilisearchHttpError> {
     let format = match (
@@ -364,7 +386,7 @@ async fn document_addition(
         }
     };
 
-    let (uuid, mut update_file) = index_scheduler.create_update_file()?;
+    let (uuid, mut update_file) = index_scheduler.create_update_file(dry_run)?;
 
     let temp_file = match tempfile() {
         Ok(file) => file,
@@ -403,11 +425,9 @@ async fn document_addition(
     let read_file = buffer.into_inner().into_std().await;
     let documents_count = tokio::task::spawn_blocking(move || {
         let documents_count = match format {
-            PayloadType::Json => read_json(&read_file, update_file.as_file_mut())?,
+            PayloadType::Json => read_json(&read_file, &mut update_file)?,
-            PayloadType::Csv { delimiter } => {
+            PayloadType::Csv { delimiter } => read_csv(&read_file, &mut update_file, delimiter)?,
-                read_csv(&read_file, update_file.as_file_mut(), delimiter)?
+            PayloadType::Ndjson => read_ndjson(&read_file, &mut update_file)?,
-            }
-            PayloadType::Ndjson => read_ndjson(&read_file, update_file.as_file_mut())?,
         };
         // we NEED to persist the file here because we moved the `udpate_file` in another task.
         update_file.persist()?;
@@ -427,7 +447,10 @@ async fn document_addition(
                 Err(index_scheduler::Error::FileStore(file_store::Error::IoError(e)))
                     if e.kind() == ErrorKind::NotFound => {}
                 Err(e) => {
-                    log::warn!("Unknown error happened while deleting a malformed update file with uuid {uuid}: {e}");
+                    tracing::warn!(
+                        index_uuid = %uuid,
+                        "Unknown error happened while deleting a malformed update file: {e}"
+                    );
                 }
             }
             // We still want to return the original error to the end user.
@@ -445,7 +468,9 @@ async fn document_addition(
     };
 
     let scheduler = index_scheduler.clone();
-    let task = match tokio::task::spawn_blocking(move || scheduler.register(task)).await? {
+    let task = match tokio::task::spawn_blocking(move || scheduler.register(task, task_id, dry_run))
+        .await?
+    {
         Ok(task) => task,
         Err(e) => {
             index_scheduler.delete_update_file(uuid)?;
@@ -453,7 +478,6 @@ async fn document_addition(
         }
     };
 
-    debug!("returns: {:?}", task);
     Ok(task.into())
 }
 
@@ -462,9 +486,10 @@ pub async fn delete_documents_batch(
     index_uid: web::Path<String>,
     body: web::Json<Vec<Value>>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    debug!("called with params: {:?}", body);
+    debug!(parameters = ?body, "Delete documents by batch");
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
     analytics.delete_documents(DocumentDeletionKind::PerBatch, &req);
@@ -476,10 +501,14 @@ pub async fn delete_documents_batch(
 
     let task =
         KindWithContent::DocumentDeletion { index_uid: index_uid.to_string(), documents_ids: ids };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Delete documents by batch");
     Ok(HttpResponse::Accepted().json(task))
 }
 
@@ -495,9 +524,10 @@ pub async fn delete_documents_by_filter(
     index_uid: web::Path<String>,
     body: AwebJson<DocumentDeletionByFilter, DeserrJsonError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    debug!("called with params: {:?}", body);
+    debug!(parameters = ?body, "Delete documents by filter");
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
     let index_uid = index_uid.into_inner();
     let filter = body.into_inner().filter;
@@ -512,10 +542,14 @@ pub async fn delete_documents_by_filter(
     .map_err(|err| ResponseError::from_msg(err.message, Code::InvalidDocumentFilter))?;
     let task = KindWithContent::DocumentDeletionByFilter { index_uid, filter_expr: filter };
 
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Delete documents by filter");
     Ok(HttpResponse::Accepted().json(task))
 }
 
@@ -523,16 +557,21 @@ pub async fn clear_all_documents(
     index_scheduler: GuardedData<ActionPolicy<{ actions::DOCUMENTS_DELETE }>, Data<IndexScheduler>>,
     index_uid: web::Path<String>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
     analytics.delete_documents(DocumentDeletionKind::ClearAll, &req);
 
     let task = KindWithContent::DocumentClear { index_uid: index_uid.to_string() };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Delete all documents");
     Ok(HttpResponse::Accepted().json(task))
 }
 

meilisearch/src/routes/indexes/facet_search.rs

@@ -2,12 +2,12 @@ use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
 use deserr::actix_web::AwebJson;
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_types::deserr::DeserrJsonError;
 use meilisearch_types::error::deserr_codes::*;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::index_uid::IndexUid;
 use serde_json::Value;
+use tracing::debug;
 
 use crate::analytics::{Analytics, FacetSearchAggregator};
 use crate::extractors::authentication::policies::*;
@@ -56,7 +56,7 @@ pub async fn search(
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
     let query = params.into_inner();
-    debug!("facet search called with params: {:?}", query);
+    debug!(parameters = ?query, "Facet search");
 
     let mut aggregate = FacetSearchAggregator::from_query(&query, &req);
 
@@ -83,7 +83,7 @@ pub async fn search(
 
     let search_result = search_result?;
 
-    debug!("returns: {:?}", search_result);
+    debug!(returns = ?search_result, "Facet search");
     Ok(HttpResponse::Ok().json(search_result))
 }
 

meilisearch/src/routes/indexes/mod.rs

@@ -5,7 +5,6 @@ use actix_web::{web, HttpRequest, HttpResponse};
 use deserr::actix_web::{AwebJson, AwebQueryParameter};
 use deserr::{DeserializeError, Deserr, ValuePointerRef};
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_types::deserr::query_params::Param;
 use meilisearch_types::deserr::{immutable_field_error, DeserrJsonError, DeserrQueryParamError};
 use meilisearch_types::error::deserr_codes::*;
@@ -16,12 +15,15 @@ use meilisearch_types::tasks::KindWithContent;
 use serde::Serialize;
 use serde_json::json;
 use time::OffsetDateTime;
+use tracing::debug;
 
-use super::{Pagination, SummarizedTaskView, PAGINATION_DEFAULT_LIMIT};
+use super::{get_task_id, Pagination, SummarizedTaskView, PAGINATION_DEFAULT_LIMIT};
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::{AuthenticationError, GuardedData};
 use crate::extractors::sequential_extractor::SeqHandler;
+use crate::routes::is_dry_run;
+use crate::Opt;
 
 pub mod documents;
 pub mod facet_search;
@@ -93,6 +95,7 @@ pub async fn list_indexes(
     index_scheduler: GuardedData<ActionPolicy<{ actions::INDEXES_GET }>, Data<IndexScheduler>>,
     paginate: AwebQueryParameter<ListIndexes, DeserrQueryParamError>,
 ) -> Result<HttpResponse, ResponseError> {
+    debug!(parameters = ?paginate, "List indexes");
     let filters = index_scheduler.filters();
     let indexes: Vec<Option<IndexView>> =
         index_scheduler.try_for_each_index(|uid, index| -> Result<Option<IndexView>, _> {
@@ -105,7 +108,7 @@ pub async fn list_indexes(
     let indexes: Vec<IndexView> = indexes.into_iter().flatten().collect();
     let ret = paginate.as_pagination().auto_paginate_sized(indexes.into_iter());
 
-    debug!("returns: {:?}", ret);
+    debug!(returns = ?ret, "List indexes");
     Ok(HttpResponse::Ok().json(ret))
 }
 
@@ -122,8 +125,10 @@ pub async fn create_index(
     index_scheduler: GuardedData<ActionPolicy<{ actions::INDEXES_CREATE }>, Data<IndexScheduler>>,
     body: AwebJson<IndexCreateRequest, DeserrJsonError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
+    debug!(parameters = ?body, "Create index");
     let IndexCreateRequest { primary_key, uid } = body.into_inner();
 
     let allow_index_creation = index_scheduler.filters().allow_index_creation(&uid);
@@ -135,8 +140,13 @@ pub async fn create_index(
         );
 
         let task = KindWithContent::IndexCreation { index_uid: uid.to_string(), primary_key };
+        let uid = get_task_id(&req, &opt)?;
+        let dry_run = is_dry_run(&req, &opt)?;
         let task: SummarizedTaskView =
-            tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+            tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+                .await??
+                .into();
+        debug!(returns = ?task, "Create index");
 
         Ok(HttpResponse::Accepted().json(task))
     } else {
@@ -177,7 +187,7 @@ pub async fn get_index(
     let index = index_scheduler.index(&index_uid)?;
     let index_view = IndexView::new(index_uid.into_inner(), &index)?;
 
-    debug!("returns: {:?}", index_view);
+    debug!(returns = ?index_view, "Get index");
 
     Ok(HttpResponse::Ok().json(index_view))
 }
@@ -187,9 +197,10 @@ pub async fn update_index(
     index_uid: web::Path<String>,
     body: AwebJson<UpdateIndexRequest, DeserrJsonError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    debug!("called with params: {:?}", body);
+    debug!(parameters = ?body, "Update index");
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
     let body = body.into_inner();
     analytics.publish(
@@ -203,21 +214,32 @@ pub async fn update_index(
         primary_key: body.primary_key,
     };
 
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Update index");
     Ok(HttpResponse::Accepted().json(task))
 }
 
 pub async fn delete_index(
     index_scheduler: GuardedData<ActionPolicy<{ actions::INDEXES_DELETE }>, Data<IndexScheduler>>,
     index_uid: web::Path<String>,
+    req: HttpRequest,
+    opt: web::Data<Opt>,
 ) -> Result<HttpResponse, ResponseError> {
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
     let task = KindWithContent::IndexDeletion { index_uid: index_uid.into_inner() };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
+    debug!(returns = ?task, "Delete index");
 
     Ok(HttpResponse::Accepted().json(task))
 }
@@ -255,6 +277,6 @@ pub async fn get_index_stats(
 
     let stats = IndexStats::from(index_scheduler.index_stats(&index_uid)?);
 
-    debug!("returns: {:?}", stats);
+    debug!(returns = ?stats, "Get index stats");
     Ok(HttpResponse::Ok().json(stats))
 }

meilisearch/src/routes/indexes/search.rs

@@ -2,7 +2,6 @@ use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
 use deserr::actix_web::{AwebJson, AwebQueryParameter};
 use index_scheduler::IndexScheduler;
-use log::{debug, warn};
 use meilisearch_types::deserr::query_params::Param;
 use meilisearch_types::deserr::{DeserrJsonError, DeserrQueryParamError};
 use meilisearch_types::error::deserr_codes::*;
@@ -12,6 +11,7 @@ use meilisearch_types::milli;
 use meilisearch_types::milli::vector::DistributionShift;
 use meilisearch_types::serde_cs::vec::CS;
 use serde_json::Value;
+use tracing::{debug, warn};
 
 use crate::analytics::{Analytics, SearchAggregator};
 use crate::extractors::authentication::policies::*;
@@ -186,7 +186,7 @@ pub async fn search_with_url_query(
     req: HttpRequest,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    debug!("called with params: {:?}", params);
+    debug!(parameters = ?params, "Search get");
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
     let mut query: SearchQuery = params.into_inner().into();
@@ -213,7 +213,7 @@ pub async fn search_with_url_query(
 
     let search_result = search_result?;
 
-    debug!("returns: {:?}", search_result);
+    debug!(returns = ?search_result, "Search get");
     Ok(HttpResponse::Ok().json(search_result))
 }
 
@@ -227,7 +227,7 @@ pub async fn search_with_post(
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
     let mut query = params.into_inner();
-    debug!("search called with params: {:?}", query);
+    debug!(parameters = ?query, "Search post");
 
     // Tenant token search_rules.
     if let Some(search_rules) = index_scheduler.filters().get_index_search_rules(&index_uid) {
@@ -252,7 +252,7 @@ pub async fn search_with_post(
 
     let search_result = search_result?;
 
-    debug!("returns: {:?}", search_result);
+    debug!(returns = ?search_result, "Search post");
     Ok(HttpResponse::Ok().json(search_result))
 }
 

meilisearch/src/routes/indexes/settings.rs

@@ -2,7 +2,6 @@ use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
 use deserr::actix_web::AwebJson;
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_types::deserr::DeserrJsonError;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::facet_values_sort::FacetValuesSort;
@@ -11,11 +10,13 @@ use meilisearch_types::milli::update::Setting;
 use meilisearch_types::settings::{settings, RankingRuleView, Settings, Unchecked};
 use meilisearch_types::tasks::KindWithContent;
 use serde_json::json;
+use tracing::debug;
 
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::GuardedData;
-use crate::routes::SummarizedTaskView;
+use crate::routes::{get_task_id, is_dry_run, SummarizedTaskView};
+use crate::Opt;
 
 #[macro_export]
 macro_rules! make_setting_route {
@@ -24,17 +25,18 @@ macro_rules! make_setting_route {
             use actix_web::web::Data;
             use actix_web::{web, HttpRequest, HttpResponse, Resource};
             use index_scheduler::IndexScheduler;
-            use log::debug;
             use meilisearch_types::error::ResponseError;
             use meilisearch_types::index_uid::IndexUid;
             use meilisearch_types::milli::update::Setting;
             use meilisearch_types::settings::{settings, Settings};
             use meilisearch_types::tasks::KindWithContent;
+            use tracing::debug;
             use $crate::analytics::Analytics;
             use $crate::extractors::authentication::policies::*;
             use $crate::extractors::authentication::GuardedData;
             use $crate::extractors::sequential_extractor::SeqHandler;
-            use $crate::routes::SummarizedTaskView;
+            use $crate::Opt;
+            use $crate::routes::{is_dry_run, get_task_id, SummarizedTaskView};
 
             pub async fn delete(
                 index_scheduler: GuardedData<
@@ -42,6 +44,8 @@ macro_rules! make_setting_route {
                     Data<IndexScheduler>,
                 >,
                 index_uid: web::Path<String>,
+                req: HttpRequest,
+                opt: web::Data<Opt>,
             ) -> Result<HttpResponse, ResponseError> {
                 let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
@@ -56,12 +60,14 @@ macro_rules! make_setting_route {
                     is_deletion: true,
                     allow_index_creation,
                 };
+                let uid = get_task_id(&req, &opt)?;
+                let dry_run = is_dry_run(&req, &opt)?;
                 let task: SummarizedTaskView =
-                    tokio::task::spawn_blocking(move || index_scheduler.register(task))
+                    tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
                         .await??
                         .into();
 
-                debug!("returns: {:?}", task);
+                debug!(returns = ?task, "Delete settings");
                 Ok(HttpResponse::Accepted().json(task))
             }
 
@@ -73,11 +79,13 @@ macro_rules! make_setting_route {
                 index_uid: actix_web::web::Path<String>,
                 body: deserr::actix_web::AwebJson<Option<$type>, $err_ty>,
                 req: HttpRequest,
+                opt: web::Data<Opt>,
                 $analytics_var: web::Data<dyn Analytics>,
             ) -> std::result::Result<HttpResponse, ResponseError> {
                 let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
                 let body = body.into_inner();
+                debug!(parameters = ?body, "Update settings");
 
                 #[allow(clippy::redundant_closure_call)]
                 $analytics(&body, &req);
@@ -104,12 +112,14 @@ macro_rules! make_setting_route {
                     is_deletion: false,
                     allow_index_creation,
                 };
+                let uid = get_task_id(&req, &opt)?;
+                let dry_run = is_dry_run(&req, &opt)?;
                 let task: SummarizedTaskView =
-                    tokio::task::spawn_blocking(move || index_scheduler.register(task))
+                    tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
                         .await??
                         .into();
 
-                debug!("returns: {:?}", task);
+                debug!(returns = ?task, "Update settings");
                 Ok(HttpResponse::Accepted().json(task))
             }
 
@@ -126,7 +136,7 @@ macro_rules! make_setting_route {
                 let rtxn = index.read_txn()?;
                 let settings = settings(&index, &rtxn)?;
 
-                debug!("returns: {:?}", settings);
+                debug!(returns = ?settings, "Update settings");
                 let mut json = serde_json::json!(&settings);
                 let val = json[$camelcase_attr].take();
 
@@ -651,11 +661,13 @@ pub async fn update_all(
     index_uid: web::Path<String>,
     body: AwebJson<Settings<Unchecked>, DeserrJsonError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
     let new_settings = body.into_inner();
+    debug!(parameters = ?new_settings, "Update all settings");
     let new_settings = validate_settings(new_settings, &index_scheduler)?;
 
     analytics.publish(
@@ -765,10 +777,14 @@ pub async fn update_all(
         is_deletion: false,
         allow_index_creation,
     };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Update all settings");
     Ok(HttpResponse::Accepted().json(task))
 }
 
@@ -781,13 +797,15 @@ pub async fn get_all(
     let index = index_scheduler.index(&index_uid)?;
     let rtxn = index.read_txn()?;
     let new_settings = settings(&index, &rtxn)?;
-    debug!("returns: {:?}", new_settings);
+    debug!(returns = ?new_settings, "Get all settings");
     Ok(HttpResponse::Ok().json(new_settings))
 }
 
 pub async fn delete_all(
     index_scheduler: GuardedData<ActionPolicy<{ actions::SETTINGS_UPDATE }>, Data<IndexScheduler>>,
     index_uid: web::Path<String>,
+    req: HttpRequest,
+    opt: web::Data<Opt>,
 ) -> Result<HttpResponse, ResponseError> {
     let index_uid = IndexUid::try_from(index_uid.into_inner())?;
 
@@ -801,10 +819,14 @@ pub async fn delete_all(
         is_deletion: true,
         allow_index_creation,
     };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Delete all settings");
     Ok(HttpResponse::Accepted().json(task))
 }
 

meilisearch/src/routes/logs.rs

@@ -0,0 +1,281 @@
+use std::convert::Infallible;
+use std::io::Write;
+use std::ops::ControlFlow;
+use std::pin::Pin;
+use std::str::FromStr;
+use std::sync::Arc;
+
+use actix_web::web::{Bytes, Data};
+use actix_web::{web, HttpResponse};
+use deserr::actix_web::AwebJson;
+use deserr::{DeserializeError, Deserr, ErrorKind, MergeWithError, ValuePointerRef};
+use futures_util::Stream;
+use index_scheduler::IndexScheduler;
+use meilisearch_types::deserr::DeserrJsonError;
+use meilisearch_types::error::deserr_codes::*;
+use meilisearch_types::error::{Code, ResponseError};
+use tokio::sync::mpsc;
+use tracing_subscriber::filter::Targets;
+use tracing_subscriber::Layer;
+
+use crate::error::MeilisearchHttpError;
+use crate::extractors::authentication::policies::*;
+use crate::extractors::authentication::GuardedData;
+use crate::extractors::sequential_extractor::SeqHandler;
+use crate::LogRouteHandle;
+
+pub fn configure(cfg: &mut web::ServiceConfig) {
+    cfg.service(
+        web::resource("stream")
+            .route(web::post().to(SeqHandler(get_logs)))
+            .route(web::delete().to(SeqHandler(cancel_logs))),
+    );
+}
+
+#[derive(Debug, Default, Clone, Copy, Deserr, PartialEq, Eq)]
+#[deserr(rename_all = camelCase)]
+pub enum LogMode {
+    #[default]
+    Human,
+    Profile,
+}
+
+/// Simple wrapper around the `Targets` from `tracing_subscriber` to implement `MergeWithError` on it.
+#[derive(Clone, Debug)]
+struct MyTargets(Targets);
+
+/// Simple wrapper around the `ParseError` from `tracing_subscriber` to implement `MergeWithError` on it.
+#[derive(Debug, thiserror::Error)]
+enum MyParseError {
+    #[error(transparent)]
+    ParseError(#[from] tracing_subscriber::filter::ParseError),
+    #[error(
+        "Empty string is not a valid target. If you want to get no logs use `OFF`. Usage: `info`, `meilisearch=info`, or you can write multiple filters in one target: `index_scheduler=info,milli=trace`"
+    )]
+    Example,
+}
+
+impl FromStr for MyTargets {
+    type Err = MyParseError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        if s.is_empty() {
+            Err(MyParseError::Example)
+        } else {
+            Ok(MyTargets(Targets::from_str(s).map_err(MyParseError::ParseError)?))
+        }
+    }
+}
+
+impl MergeWithError<MyParseError> for DeserrJsonError<BadRequest> {
+    fn merge(
+        _self_: Option<Self>,
+        other: MyParseError,
+        merge_location: ValuePointerRef,
+    ) -> ControlFlow<Self, Self> {
+        Self::error::<Infallible>(
+            None,
+            ErrorKind::Unexpected { msg: other.to_string() },
+            merge_location,
+        )
+    }
+}
+
+#[derive(Debug, Deserr)]
+#[deserr(error = DeserrJsonError, rename_all = camelCase, deny_unknown_fields, validate = validate_get_logs -> DeserrJsonError<InvalidSettingsTypoTolerance>)]
+pub struct GetLogs {
+    #[deserr(default = "info".parse().unwrap(), try_from(&String) = MyTargets::from_str -> DeserrJsonError<BadRequest>)]
+    target: MyTargets,
+
+    #[deserr(default, error = DeserrJsonError<BadRequest>)]
+    mode: LogMode,
+
+    #[deserr(default = false, error = DeserrJsonError<BadRequest>)]
+    profile_memory: bool,
+}
+
+fn validate_get_logs<E: DeserializeError>(
+    logs: GetLogs,
+    location: ValuePointerRef,
+) -> Result<GetLogs, E> {
+    if logs.profile_memory && logs.mode != LogMode::Profile {
+        Err(deserr::take_cf_content(E::error::<Infallible>(
+            None,
+            ErrorKind::Unexpected {
+                msg: format!("`profile_memory` can only be used while profiling code and is not compatible with the {:?} mode.", logs.mode),
+            },
+            location,
+        )))
+    } else {
+        Ok(logs)
+    }
+}
+
+struct LogWriter {
+    sender: mpsc::UnboundedSender<Vec<u8>>,
+}
+
+impl Write for LogWriter {
+    fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
+        self.sender.send(buf.to_vec()).map_err(std::io::Error::other)?;
+        Ok(buf.len())
+    }
+
+    fn flush(&mut self) -> std::io::Result<()> {
+        Ok(())
+    }
+}
+
+struct HandleGuard {
+    /// We need to keep an handle on the logs to make it available again when the streamer is dropped
+    logs: Arc<LogRouteHandle>,
+}
+
+impl Drop for HandleGuard {
+    fn drop(&mut self) {
+        if let Err(e) = self.logs.modify(|layer| *layer.inner_mut() = None) {
+            tracing::error!("Could not free the logs route: {e}");
+        }
+    }
+}
+
+fn byte_stream(
+    receiver: mpsc::UnboundedReceiver<Vec<u8>>,
+    guard: HandleGuard,
+) -> impl futures_util::Stream<Item = Result<Bytes, ResponseError>> {
+    futures_util::stream::unfold((receiver, guard), move |(mut receiver, guard)| async move {
+        let vec = receiver.recv().await;
+
+        vec.map(From::from).map(Ok).map(|a| (a, (receiver, guard)))
+    })
+}
+
+type PinnedByteStream = Pin<Box<dyn Stream<Item = Result<Bytes, ResponseError>>>>;
+
+fn make_layer<
+    S: tracing::Subscriber + for<'span> tracing_subscriber::registry::LookupSpan<'span>,
+>(
+    opt: &GetLogs,
+    logs: Data<LogRouteHandle>,
+) -> (Box<dyn Layer<S> + Send + Sync>, PinnedByteStream) {
+    let guard = HandleGuard { logs: logs.into_inner() };
+    match opt.mode {
+        LogMode::Human => {
+            let (sender, receiver) = tokio::sync::mpsc::unbounded_channel();
+
+            let fmt_layer = tracing_subscriber::fmt::layer()
+                .with_writer(move || LogWriter { sender: sender.clone() })
+                .with_span_events(tracing_subscriber::fmt::format::FmtSpan::ACTIVE);
+
+            let stream = byte_stream(receiver, guard);
+            (Box::new(fmt_layer) as Box<dyn Layer<S> + Send + Sync>, Box::pin(stream))
+        }
+        LogMode::Profile => {
+            let (trace, layer) = tracing_trace::Trace::new(opt.profile_memory);
+
+            let stream = entry_stream(trace, guard);
+
+            (Box::new(layer) as Box<dyn Layer<S> + Send + Sync>, Box::pin(stream))
+        }
+    }
+}
+
+fn entry_stream(
+    trace: tracing_trace::Trace,
+    guard: HandleGuard,
+) -> impl Stream<Item = Result<Bytes, ResponseError>> {
+    let receiver = trace.into_receiver();
+    let entry_buf = Vec::new();
+
+    futures_util::stream::unfold(
+        (receiver, entry_buf, guard),
+        move |(mut receiver, mut entry_buf, guard)| async move {
+            let mut bytes = Vec::new();
+
+            while bytes.len() < 8192 {
+                entry_buf.clear();
+
+                let Ok(count) = tokio::time::timeout(
+                    std::time::Duration::from_secs(1),
+                    receiver.recv_many(&mut entry_buf, 100),
+                )
+                .await
+                else {
+                    break;
+                };
+
+                if count == 0 {
+                    if !bytes.is_empty() {
+                        break;
+                    }
+
+                    // channel closed, exit
+                    return None;
+                }
+
+                for entry in &entry_buf {
+                    if let Err(error) = serde_json::to_writer(&mut bytes, entry) {
+                        tracing::error!(
+                            error = &error as &dyn std::error::Error,
+                            "deserializing entry"
+                        );
+                        return Some((
+                            Err(ResponseError::from_msg(
+                                format!("error deserializing entry: {error}"),
+                                Code::Internal,
+                            )),
+                            (receiver, entry_buf, guard),
+                        ));
+                    }
+                }
+            }
+
+            Some((Ok(bytes.into()), (receiver, entry_buf, guard)))
+        },
+    )
+}
+
+pub async fn get_logs(
+    index_scheduler: GuardedData<ActionPolicy<{ actions::METRICS_GET }>, Data<IndexScheduler>>,
+    logs: Data<LogRouteHandle>,
+    body: AwebJson<GetLogs, DeserrJsonError>,
+) -> Result<HttpResponse, ResponseError> {
+    index_scheduler.features().check_logs_route()?;
+
+    let opt = body.into_inner();
+    let mut stream = None;
+
+    logs.modify(|layer| match layer.inner_mut() {
+        None => {
+            // there is no one getting logs
+            *layer.filter_mut() = opt.target.0.clone();
+            let (new_layer, new_stream) = make_layer(&opt, logs.clone());
+
+            *layer.inner_mut() = Some(new_layer);
+            stream = Some(new_stream);
+        }
+        Some(_) => {
+            // there is already someone getting logs
+        }
+    })
+    .unwrap();
+
+    if let Some(stream) = stream {
+        Ok(HttpResponse::Ok().streaming(stream))
+    } else {
+        Err(MeilisearchHttpError::AlreadyUsedLogRoute.into())
+    }
+}
+
+pub async fn cancel_logs(
+    index_scheduler: GuardedData<ActionPolicy<{ actions::METRICS_GET }>, Data<IndexScheduler>>,
+    logs: Data<LogRouteHandle>,
+) -> Result<HttpResponse, ResponseError> {
+    index_scheduler.features().check_logs_route()?;
+
+    if let Err(e) = logs.modify(|layer| *layer.inner_mut() = None) {
+        tracing::error!("Could not free the logs route: {e}");
+    }
+
+    Ok(HttpResponse::NoContent().finish())
+}

meilisearch/src/routes/mod.rs

@@ -3,18 +3,19 @@ use std::collections::BTreeMap;
 use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_auth::AuthController;
-use meilisearch_types::error::ResponseError;
+use meilisearch_types::error::{Code, ResponseError};
 use meilisearch_types::settings::{Settings, Unchecked};
 use meilisearch_types::tasks::{Kind, Status, Task, TaskId};
 use serde::{Deserialize, Serialize};
 use serde_json::json;
 use time::OffsetDateTime;
+use tracing::debug;
 
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::GuardedData;
+use crate::Opt;
 
 const PAGINATION_DEFAULT_LIMIT: usize = 20;
 
@@ -22,6 +23,7 @@ mod api_key;
 mod dump;
 pub mod features;
 pub mod indexes;
+mod logs;
 mod metrics;
 mod multi_search;
 mod snapshot;
@@ -31,6 +33,7 @@ pub mod tasks;
 pub fn configure(cfg: &mut web::ServiceConfig) {
     cfg.service(web::scope("/tasks").configure(tasks::configure))
         .service(web::resource("/health").route(web::get().to(get_health)))
+        .service(web::scope("/logs").configure(logs::configure))
         .service(web::scope("/keys").configure(api_key::configure))
         .service(web::scope("/dumps").configure(dump::configure))
         .service(web::scope("/snapshots").configure(snapshot::configure))
@@ -43,6 +46,56 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
         .service(web::scope("/experimental-features").configure(features::configure));
 }
 
+pub fn get_task_id(req: &HttpRequest, opt: &Opt) -> Result<Option<TaskId>, ResponseError> {
+    if !opt.experimental_replication_parameters {
+        return Ok(None);
+    }
+    let task_id = req
+        .headers()
+        .get("TaskId")
+        .map(|header| {
+            header.to_str().map_err(|e| {
+                ResponseError::from_msg(
+                    format!("TaskId is not a valid utf-8 string: {e}"),
+                    Code::BadRequest,
+                )
+            })
+        })
+        .transpose()?
+        .map(|s| {
+            s.parse::<TaskId>().map_err(|e| {
+                ResponseError::from_msg(
+                    format!(
+                        "Could not parse the TaskId as a {}: {e}",
+                        std::any::type_name::<TaskId>(),
+                    ),
+                    Code::BadRequest,
+                )
+            })
+        })
+        .transpose()?;
+    Ok(task_id)
+}
+
+pub fn is_dry_run(req: &HttpRequest, opt: &Opt) -> Result<bool, ResponseError> {
+    if !opt.experimental_replication_parameters {
+        return Ok(false);
+    }
+    Ok(req
+        .headers()
+        .get("DryRun")
+        .map(|header| {
+            header.to_str().map_err(|e| {
+                ResponseError::from_msg(
+                    format!("DryRun is not a valid utf-8 string: {e}"),
+                    Code::BadRequest,
+                )
+            })
+        })
+        .transpose()?
+        .map_or(false, |s| s.to_lowercase() == "true"))
+}
+
 #[derive(Debug, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct SummarizedTaskView {
@@ -250,7 +303,7 @@ async fn get_stats(
 
     let stats = create_all_stats((*index_scheduler).clone(), (*auth_controller).clone(), filters)?;
 
-    debug!("returns: {:?}", stats);
+    debug!(returns = ?stats, "Get stats");
     Ok(HttpResponse::Ok().json(stats))
 }
 

meilisearch/src/routes/multi_search.rs

@@ -3,11 +3,11 @@ use actix_web::web::{self, Data};
 use actix_web::{HttpRequest, HttpResponse};
 use deserr::actix_web::AwebJson;
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_types::deserr::DeserrJsonError;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::keys::actions;
 use serde::Serialize;
+use tracing::debug;
 
 use crate::analytics::{Analytics, MultiSearchAggregator};
 use crate::extractors::authentication::policies::ActionPolicy;
@@ -52,7 +52,7 @@ pub async fn multi_search_with_post(
         for (query_index, (index_uid, mut query)) in
             queries.into_iter().map(SearchQueryWithIndex::into_index_query).enumerate()
         {
-            debug!("multi-search #{query_index}: called with params: {:?}", query);
+            debug!(on_index = query_index, parameters = ?query, "Multi-search");
 
             // Check index from API key
             if !index_scheduler.filters().is_index_authorized(&index_uid) {
@@ -107,7 +107,7 @@ pub async fn multi_search_with_post(
         err
     })?;
 
-    debug!("returns: {:?}", search_results);
+    debug!(returns = ?search_results, "Multi-search");
 
     Ok(HttpResponse::Ok().json(SearchResults { results: search_results }))
 }

meilisearch/src/routes/snapshot.rs

@@ -1,16 +1,17 @@
 use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
 use index_scheduler::IndexScheduler;
-use log::debug;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::tasks::KindWithContent;
 use serde_json::json;
+use tracing::debug;
 
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::GuardedData;
 use crate::extractors::sequential_extractor::SeqHandler;
-use crate::routes::SummarizedTaskView;
+use crate::routes::{get_task_id, is_dry_run, SummarizedTaskView};
+use crate::Opt;
 
 pub fn configure(cfg: &mut web::ServiceConfig) {
     cfg.service(web::resource("").route(web::post().to(SeqHandler(create_snapshot))));
@@ -19,14 +20,19 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
 pub async fn create_snapshot(
     index_scheduler: GuardedData<ActionPolicy<{ actions::SNAPSHOTS_CREATE }>, Data<IndexScheduler>>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     analytics.publish("Snapshot Created".to_string(), json!({}), Some(&req));
 
     let task = KindWithContent::SnapshotCreation;
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
 
-    debug!("returns: {:?}", task);
+    debug!(returns = ?task, "Create snapshot");
     Ok(HttpResponse::Accepted().json(task))
 }

meilisearch/src/routes/swap_indexes.rs

@@ -10,12 +10,13 @@ use meilisearch_types::index_uid::IndexUid;
 use meilisearch_types::tasks::{IndexSwap, KindWithContent};
 use serde_json::json;
 
-use super::SummarizedTaskView;
+use super::{get_task_id, is_dry_run, SummarizedTaskView};
 use crate::analytics::Analytics;
 use crate::error::MeilisearchHttpError;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::{AuthenticationError, GuardedData};
 use crate::extractors::sequential_extractor::SeqHandler;
+use crate::Opt;
 
 pub fn configure(cfg: &mut web::ServiceConfig) {
     cfg.service(web::resource("").route(web::post().to(SeqHandler(swap_indexes))));
@@ -32,6 +33,7 @@ pub async fn swap_indexes(
     index_scheduler: GuardedData<ActionPolicy<{ actions::INDEXES_SWAP }>, Data<IndexScheduler>>,
     params: AwebJson<Vec<SwapIndexesPayload>, DeserrJsonError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let params = params.into_inner();
@@ -60,7 +62,11 @@ pub async fn swap_indexes(
     }
 
     let task = KindWithContent::IndexSwap { swaps };
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
     let task: SummarizedTaskView =
-        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+        tokio::task::spawn_blocking(move || index_scheduler.register(task, uid, dry_run))
+            .await??
+            .into();
     Ok(HttpResponse::Accepted().json(task))
 }

meilisearch/src/routes/tasks.rs

@@ -18,11 +18,12 @@ use time::macros::format_description;
 use time::{Date, Duration, OffsetDateTime, Time};
 use tokio::task;
 
-use super::SummarizedTaskView;
+use super::{get_task_id, is_dry_run, SummarizedTaskView};
 use crate::analytics::Analytics;
 use crate::extractors::authentication::policies::*;
 use crate::extractors::authentication::GuardedData;
 use crate::extractors::sequential_extractor::SeqHandler;
+use crate::Opt;
 
 const DEFAULT_LIMIT: u32 = 20;
 
@@ -161,6 +162,7 @@ async fn cancel_tasks(
     index_scheduler: GuardedData<ActionPolicy<{ actions::TASKS_CANCEL }>, Data<IndexScheduler>>,
     params: AwebQueryParameter<TaskDeletionOrCancelationQuery, DeserrQueryParamError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let params = params.into_inner();
@@ -197,7 +199,11 @@ async fn cancel_tasks(
     let task_cancelation =
         KindWithContent::TaskCancelation { query: format!("?{}", req.query_string()), tasks };
 
-    let task = task::spawn_blocking(move || index_scheduler.register(task_cancelation)).await??;
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
+    let task =
+        task::spawn_blocking(move || index_scheduler.register(task_cancelation, uid, dry_run))
+            .await??;
     let task: SummarizedTaskView = task.into();
 
     Ok(HttpResponse::Ok().json(task))
@@ -207,6 +213,7 @@ async fn delete_tasks(
     index_scheduler: GuardedData<ActionPolicy<{ actions::TASKS_DELETE }>, Data<IndexScheduler>>,
     params: AwebQueryParameter<TaskDeletionOrCancelationQuery, DeserrQueryParamError>,
     req: HttpRequest,
+    opt: web::Data<Opt>,
     analytics: web::Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
     let params = params.into_inner();
@@ -242,7 +249,10 @@ async fn delete_tasks(
     let task_deletion =
         KindWithContent::TaskDeletion { query: format!("?{}", req.query_string()), tasks };
 
-    let task = task::spawn_blocking(move || index_scheduler.register(task_deletion)).await??;
+    let uid = get_task_id(&req, &opt)?;
+    let dry_run = is_dry_run(&req, &opt)?;
+    let task = task::spawn_blocking(move || index_scheduler.register(task_deletion, uid, dry_run))
+        .await??;
     let task: SummarizedTaskView = task.into();
 
     Ok(HttpResponse::Ok().json(task))

meilisearch/src/search.rs

@@ -441,10 +441,6 @@ fn prepare_search<'t>(
         ScoringStrategy::Skip
     });
 
-    if query.show_ranking_score_details {
-        features.check_score_details()?;
-    }
-
     if let Some(HybridQuery { embedder: Some(embedder), .. }) = &query.hybrid {
         search.embedder_name(embedder);
     }

meilisearch/tests/auth/authorization.rs

@@ -59,6 +59,8 @@ pub static AUTHORIZATIONS: Lazy<HashMap<(&'static str, &'static str), HashSet<&'
             ("POST",    "/snapshots") =>                                       hashset!{"snapshots.create", "snapshots.*", "*"},
             ("GET",     "/version") =>                                         hashset!{"version", "*"},
             ("GET",     "/metrics") =>                                         hashset!{"metrics.get", "metrics.*", "*"},
+            ("POST",    "/logs/stream") =>                                     hashset!{"metrics.get", "metrics.*", "*"},
+            ("DELETE",  "/logs/stream") =>                                     hashset!{"metrics.get", "metrics.*", "*"},
             ("PATCH",   "/keys/mykey/") =>                                     hashset!{"keys.update", "*"},
             ("GET",     "/keys/mykey/") =>                                     hashset!{"keys.get", "*"},
             ("DELETE",  "/keys/mykey/") =>                                     hashset!{"keys.delete", "*"},

meilisearch/tests/common/index.rs

@@ -100,16 +100,11 @@ impl Index<'_> {
     pub async fn raw_add_documents(
         &self,
         payload: &str,
-        content_type: Option<&str>,
+        headers: Vec<(&str, &str)>,
         query_parameter: &str,
     ) -> (Value, StatusCode) {
         let url = format!("/indexes/{}/documents{}", urlencode(self.uid.as_ref()), query_parameter);
-
+        self.service.post_str(url, payload, headers).await
-        if let Some(content_type) = content_type {
-            self.service.post_str(url, payload, vec![("Content-Type", content_type)]).await
-        } else {
-            self.service.post_str(url, payload, Vec::new()).await
-        }
     }
 
     pub async fn update_documents(

meilisearch/tests/common/server.rs

@@ -13,6 +13,8 @@ use meilisearch::{analytics, create_app, setup_meilisearch};
 use once_cell::sync::Lazy;
 use tempfile::TempDir;
 use tokio::time::sleep;
+use tracing::level_filters::LevelFilter;
+use tracing_subscriber::Layer;
 
 use super::index::Index;
 use super::service::Service;
@@ -81,10 +83,16 @@ impl Server {
         Response = ServiceResponse<impl MessageBody>,
         Error = actix_web::Error,
     > {
+        let (_route_layer, route_layer_handle) =
+            tracing_subscriber::reload::Layer::new(None.with_filter(
+                tracing_subscriber::filter::Targets::new().with_target("", LevelFilter::OFF),
+            ));
+
         actix_web::test::init_service(create_app(
             self.service.index_scheduler.clone().into(),
             self.service.auth.clone().into(),
             self.service.options.clone(),
+            route_layer_handle,
             analytics::MockAnalytics::new(&self.service.options),
             true,
         ))

meilisearch/tests/common/service.rs

@@ -7,6 +7,8 @@ use actix_web::test::TestRequest;
 use index_scheduler::IndexScheduler;
 use meilisearch::{analytics, create_app, Opt};
 use meilisearch_auth::AuthController;
+use tracing::level_filters::LevelFilter;
+use tracing_subscriber::Layer;
 
 use crate::common::encoder::Encoder;
 use crate::common::Value;
@@ -105,10 +107,16 @@ impl Service {
     }
 
     pub async fn request(&self, mut req: test::TestRequest) -> (Value, StatusCode) {
+        let (_route_layer, route_layer_handle) =
+            tracing_subscriber::reload::Layer::new(None.with_filter(
+                tracing_subscriber::filter::Targets::new().with_target("", LevelFilter::OFF),
+            ));
+
         let app = test::init_service(create_app(
             self.index_scheduler.clone().into(),
             self.auth.clone().into(),
             self.options.clone(),
+            route_layer_handle,
             analytics::MockAnalytics::new(&self.options),
             true,
         ))

meilisearch/tests/documents/add_documents.rs

@@ -1,10 +1,11 @@
 use actix_web::test;
 use meili_snap::{json_string, snapshot};
+use meilisearch::Opt;
 use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
 
 use crate::common::encoder::Encoder;
-use crate::common::{GetAllDocumentsOptions, Server, Value};
+use crate::common::{default_settings, GetAllDocumentsOptions, Server, Value};
 use crate::json;
 
 /// This is the basic usage of our API and every other tests uses the content-type application/json
@@ -2157,3 +2158,49 @@ async fn batch_several_documents_addition() {
     assert_eq!(code, 200, "failed with `{}`", response);
     assert_eq!(response["results"].as_array().unwrap().len(), 120);
 }
+
+#[actix_rt::test]
+async fn dry_register_file() {
+    let temp = tempfile::tempdir().unwrap();
+
+    let options =
+        Opt { experimental_replication_parameters: true, ..default_settings(temp.path()) };
+    let server = Server::new_with_options(options).await.unwrap();
+    let index = server.index("tamo");
+
+    let documents = r#"
+        {
+            "id": "12",
+            "doggo": "kefir"
+        }
+    "#;
+
+    let (response, code) = index
+        .raw_add_documents(
+            documents,
+            vec![("Content-Type", "application/json"), ("DryRun", "true")],
+            "",
+        )
+        .await;
+    snapshot!(response, @r###"
+    {
+      "taskUid": 0,
+      "indexUid": "tamo",
+      "status": "enqueued",
+      "type": "documentAdditionOrUpdate",
+      "enqueuedAt": "[date]"
+    }
+    "###);
+    snapshot!(code, @"202 Accepted");
+
+    let (response, code) = index.get_task(response.uid()).await;
+    snapshot!(response, @r###"
+    {
+      "message": "Task `0` not found.",
+      "code": "task_not_found",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#task_not_found"
+    }
+    "###);
+    snapshot!(code, @"404 Not Found");
+}

meilisearch/tests/documents/errors.rs

@@ -209,7 +209,8 @@ async fn replace_documents_missing_payload() {
     let server = Server::new().await;
     let index = server.index("test");
 
-    let (response, code) = index.raw_add_documents("", Some("application/json"), "").await;
+    let (response, code) =
+        index.raw_add_documents("", vec![("Content-Type", "application/json")], "").await;
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
@@ -220,7 +221,8 @@ async fn replace_documents_missing_payload() {
     }
     "###);
 
-    let (response, code) = index.raw_add_documents("", Some("application/x-ndjson"), "").await;
+    let (response, code) =
+        index.raw_add_documents("", vec![("Content-Type", "application/x-ndjson")], "").await;
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
@@ -231,7 +233,8 @@ async fn replace_documents_missing_payload() {
     }
     "###);
 
-    let (response, code) = index.raw_add_documents("", Some("text/csv"), "").await;
+    let (response, code) =
+        index.raw_add_documents("", vec![("Content-Type", "text/csv")], "").await;
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
@@ -287,7 +290,7 @@ async fn replace_documents_missing_content_type() {
     let server = Server::new().await;
     let index = server.index("test");
 
-    let (response, code) = index.raw_add_documents("", None, "").await;
+    let (response, code) = index.raw_add_documents("", Vec::new(), "").await;
     snapshot!(code, @"415 Unsupported Media Type");
     snapshot!(json_string!(response), @r###"
     {
@@ -299,7 +302,7 @@ async fn replace_documents_missing_content_type() {
     "###);
 
     // even with a csv delimiter specified this error is triggered first
-    let (response, code) = index.raw_add_documents("", None, "?csvDelimiter=;").await;
+    let (response, code) = index.raw_add_documents("", Vec::new(), "?csvDelimiter=;").await;
     snapshot!(code, @"415 Unsupported Media Type");
     snapshot!(json_string!(response), @r###"
     {
@@ -345,7 +348,7 @@ async fn replace_documents_bad_content_type() {
     let server = Server::new().await;
     let index = server.index("test");
 
-    let (response, code) = index.raw_add_documents("", Some("doggo"), "").await;
+    let (response, code) = index.raw_add_documents("", vec![("Content-Type", "doggo")], "").await;
     snapshot!(code, @"415 Unsupported Media Type");
     snapshot!(json_string!(response), @r###"
     {
@@ -379,8 +382,9 @@ async fn replace_documents_bad_csv_delimiter() {
     let server = Server::new().await;
     let index = server.index("test");
 
-    let (response, code) =
+    let (response, code) = index
-        index.raw_add_documents("", Some("application/json"), "?csvDelimiter").await;
+        .raw_add_documents("", vec![("Content-Type", "application/json")], "?csvDelimiter")
+        .await;
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
@@ -391,8 +395,9 @@ async fn replace_documents_bad_csv_delimiter() {
     }
     "###);
 
-    let (response, code) =
+    let (response, code) = index
-        index.raw_add_documents("", Some("application/json"), "?csvDelimiter=doggo").await;
+        .raw_add_documents("", vec![("Content-Type", "application/json")], "?csvDelimiter=doggo")
+        .await;
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
@@ -404,7 +409,11 @@ async fn replace_documents_bad_csv_delimiter() {
     "###);
 
     let (response, code) = index
-        .raw_add_documents("", Some("application/json"), &format!("?csvDelimiter={}", encode("🍰")))
+        .raw_add_documents(
+            "",
+            vec![("Content-Type", "application/json")],
+            &format!("?csvDelimiter={}", encode("🍰")),
+        )
         .await;
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
@@ -469,8 +478,9 @@ async fn replace_documents_csv_delimiter_with_bad_content_type() {
     let server = Server::new().await;
     let index = server.index("test");
 
-    let (response, code) =
+    let (response, code) = index
-        index.raw_add_documents("", Some("application/json"), "?csvDelimiter=a").await;
+        .raw_add_documents("", vec![("Content-Type", "application/json")], "?csvDelimiter=a")
+        .await;
     snapshot!(code, @"415 Unsupported Media Type");
     snapshot!(json_string!(response), @r###"
     {
@@ -481,8 +491,9 @@ async fn replace_documents_csv_delimiter_with_bad_content_type() {
     }
     "###);
 
-    let (response, code) =
+    let (response, code) = index
-        index.raw_add_documents("", Some("application/x-ndjson"), "?csvDelimiter=a").await;
+        .raw_add_documents("", vec![("Content-Type", "application/x-ndjson")], "?csvDelimiter=a")
+        .await;
     snapshot!(code, @"415 Unsupported Media Type");
     snapshot!(json_string!(response), @r###"
     {

meilisearch/tests/dumps/mod.rs

@@ -1845,9 +1845,9 @@ async fn import_dump_v6_containing_experimental_features() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": false,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);

meilisearch/tests/features/mod.rs

@@ -18,9 +18,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": false,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);
@@ -30,9 +30,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": true,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);
@@ -42,9 +42,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": true,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);
@@ -55,9 +55,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": true,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);
@@ -68,9 +68,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": true,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);
@@ -88,9 +88,9 @@ async fn experimental_feature_metrics() {
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": false,
       "metrics": true,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);
@@ -146,7 +146,7 @@ async fn errors() {
     meili_snap::snapshot!(code, @"400 Bad Request");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "message": "Unknown field `NotAFeature`: expected one of `scoreDetails`, `vectorStore`, `metrics`, `exportPuffinReports`",
+      "message": "Unknown field `NotAFeature`: expected one of `vectorStore`, `metrics`, `logsRoute`, `exportPuffinReports`",
       "code": "bad_request",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#bad_request"

meilisearch/tests/index/create_index.rs

@@ -2,9 +2,10 @@ use actix_web::http::header::ContentType;
 use actix_web::test;
 use http::header::ACCEPT_ENCODING;
 use meili_snap::{json_string, snapshot};
+use meilisearch::Opt;
 
 use crate::common::encoder::Encoder;
-use crate::common::{Server, Value};
+use crate::common::{default_settings, Server, Value};
 use crate::json;
 
 #[actix_rt::test]
@@ -199,3 +200,79 @@ async fn error_create_with_invalid_index_uid() {
     }
     "###);
 }
+
+#[actix_rt::test]
+async fn send_task_id() {
+    let temp = tempfile::tempdir().unwrap();
+
+    let options =
+        Opt { experimental_replication_parameters: true, ..default_settings(temp.path()) };
+    let server = Server::new_with_options(options).await.unwrap();
+
+    let app = server.init_web_app().await;
+    let index = server.index("catto");
+    let (response, code) = index.create(None).await;
+    snapshot!(code, @"202 Accepted");
+    snapshot!(json_string!(response, { ".enqueuedAt" => "[date]" }), @r###"
+    {
+      "taskUid": 0,
+      "indexUid": "catto",
+      "status": "enqueued",
+      "type": "indexCreation",
+      "enqueuedAt": "[date]"
+    }
+    "###);
+
+    let body = serde_json::to_string(&json!({
+        "uid": "doggo",
+        "primaryKey": None::<&str>,
+    }))
+    .unwrap();
+    let req = test::TestRequest::post()
+        .uri("/indexes")
+        .insert_header(("TaskId", "25"))
+        .insert_header(ContentType::json())
+        .set_payload(body)
+        .to_request();
+
+    let res = test::call_service(&app, req).await;
+    snapshot!(res.status(), @"202 Accepted");
+
+    let bytes = test::read_body(res).await;
+    let response = serde_json::from_slice::<Value>(&bytes).expect("Expecting valid json");
+    snapshot!(json_string!(response, { ".enqueuedAt" => "[date]" }), @r###"
+    {
+      "taskUid": 25,
+      "indexUid": "doggo",
+      "status": "enqueued",
+      "type": "indexCreation",
+      "enqueuedAt": "[date]"
+    }
+    "###);
+
+    let body = serde_json::to_string(&json!({
+        "uid": "girafo",
+        "primaryKey": None::<&str>,
+    }))
+    .unwrap();
+    let req = test::TestRequest::post()
+        .uri("/indexes")
+        .insert_header(("TaskId", "12"))
+        .insert_header(ContentType::json())
+        .set_payload(body)
+        .to_request();
+
+    let res = test::call_service(&app, req).await;
+    snapshot!(res.status(), @"400 Bad Request");
+
+    let bytes = test::read_body(res).await;
+    let response = serde_json::from_slice::<Value>(&bytes).expect("Expecting valid json");
+    snapshot!(json_string!(response), @r###"
+    {
+      "message": "Received bad task id: 12 should be >= to 26.",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+}

meilisearch/tests/integration.rs

@@ -5,6 +5,7 @@ mod documents;
 mod dumps;
 mod features;
 mod index;
+mod logs;
 mod search;
 mod settings;
 mod snapshot;

meilisearch/tests/logs/error.rs

@@ -0,0 +1,182 @@
+use meili_snap::*;
+
+use crate::common::Server;
+use crate::json;
+
+#[actix_rt::test]
+async fn logs_stream_bad_target() {
+    let server = Server::new().await;
+
+    // Wrong type
+    let (response, code) = server.service.post("/logs/stream", json!({ "target": true })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value type at `.target`: expected a string, but found a boolean: `true`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // Wrong type
+    let (response, code) = server.service.post("/logs/stream", json!({ "target": [] })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value type at `.target`: expected a string, but found an array: `[]`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // Our help message
+    let (response, code) = server.service.post("/logs/stream", json!({ "target": "" })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value at `.target`: Empty string is not a valid target. If you want to get no logs use `OFF`. Usage: `info`, `meilisearch=info`, or you can write multiple filters in one target: `index_scheduler=info,milli=trace`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // An error from the target parser
+    let (response, code) = server.service.post("/logs/stream", json!({ "target": "==" })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value at `.target`: invalid filter directive: too many '=' in filter directive, expected 0 or 1",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+}
+
+#[actix_rt::test]
+async fn logs_stream_bad_mode() {
+    let server = Server::new().await;
+
+    // Wrong type
+    let (response, code) = server.service.post("/logs/stream", json!({ "mode": true })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value type at `.mode`: expected a string, but found a boolean: `true`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // Wrong type
+    let (response, code) = server.service.post("/logs/stream", json!({ "mode": [] })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value type at `.mode`: expected a string, but found an array: `[]`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // Wrong value
+    let (response, code) = server.service.post("/logs/stream", json!({ "mode": "tamo" })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Unknown value `tamo` at `.mode`: expected one of `human`, `profile`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+}
+
+#[actix_rt::test]
+async fn logs_stream_bad_profile_memory() {
+    let server = Server::new().await;
+
+    // Wrong type
+    let (response, code) =
+        server.service.post("/logs/stream", json!({ "profileMemory": "tamo" })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value type at `.profileMemory`: expected a boolean, but found a string: `\"tamo\"`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // Wrong type
+    let (response, code) =
+        server.service.post("/logs/stream", json!({ "profileMemory": ["hello", "kefir"] })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value type at `.profileMemory`: expected a boolean, but found an array: `[\"hello\",\"kefir\"]`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+
+    // Used with default parameters
+    let (response, code) =
+        server.service.post("/logs/stream", json!({ "profileMemory": true })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Invalid value: `profile_memory` can only be used while profiling code and is not compatible with the Human mode.",
+      "code": "invalid_settings_typo_tolerance",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#invalid_settings_typo_tolerance"
+    }
+    "###);
+
+    // Used with an unsupported mode
+    let (response, code) =
+        server.service.post("/logs/stream", json!({ "mode": "fmt", "profileMemory": true })).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "Unknown value `fmt` at `.mode`: expected one of `human`, `profile`",
+      "code": "bad_request",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#bad_request"
+    }
+    "###);
+}
+
+#[actix_rt::test]
+async fn logs_stream_without_enabling_the_route() {
+    let server = Server::new().await;
+
+    let (response, code) = server.service.post("/logs/stream", json!({})).await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "getting logs through the `/logs/stream` route requires enabling the `logs route` experimental feature. See https://github.com/orgs/meilisearch/discussions/721",
+      "code": "feature_not_enabled",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#feature_not_enabled"
+    }
+    "###);
+
+    let (response, code) = server.service.delete("/logs/stream").await;
+    snapshot!(code, @"400 Bad Request");
+    snapshot!(response, @r###"
+    {
+      "message": "getting logs through the `/logs/stream` route requires enabling the `logs route` experimental feature. See https://github.com/orgs/meilisearch/discussions/721",
+      "code": "feature_not_enabled",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#feature_not_enabled"
+    }
+    "###);
+}

meilisearch/tests/logs/mod.rs

@@ -0,0 +1,92 @@
+mod error;
+
+use std::rc::Rc;
+use std::str::FromStr;
+
+use actix_web::http::header::ContentType;
+use meili_snap::snapshot;
+use meilisearch::{analytics, create_app, Opt};
+use tracing::level_filters::LevelFilter;
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::Layer;
+
+use crate::common::{default_settings, Server};
+use crate::json;
+
+#[actix_web::test]
+async fn basic_test_log_stream_route() {
+    let db_path = tempfile::tempdir().unwrap();
+    let server = Server::new_with_options(Opt {
+        experimental_enable_logs_route: true,
+        ..default_settings(db_path.path())
+    })
+    .await
+    .unwrap();
+
+    let (route_layer, route_layer_handle) =
+        tracing_subscriber::reload::Layer::new(None.with_filter(
+            tracing_subscriber::filter::Targets::new().with_target("", LevelFilter::OFF),
+        ));
+
+    let subscriber = tracing_subscriber::registry().with(route_layer).with(
+        tracing_subscriber::fmt::layer()
+            .with_span_events(tracing_subscriber::fmt::format::FmtSpan::ACTIVE)
+            .with_filter(tracing_subscriber::filter::LevelFilter::from_str("INFO").unwrap()),
+    );
+
+    let app = actix_web::test::init_service(create_app(
+        server.service.index_scheduler.clone().into(),
+        server.service.auth.clone().into(),
+        server.service.options.clone(),
+        route_layer_handle,
+        analytics::MockAnalytics::new(&server.service.options),
+        true,
+    ))
+    .await;
+
+    // set the subscriber as the default for the application
+    tracing::subscriber::set_global_default(subscriber).unwrap();
+
+    let app = Rc::new(app);
+
+    // First, we start listening on the `/logs/stream` route
+    let handle_app = app.clone();
+    let handle = tokio::task::spawn_local(async move {
+        let req = actix_web::test::TestRequest::post()
+            .uri("/logs/stream")
+            .insert_header(ContentType::json())
+            .set_payload(
+                serde_json::to_vec(&json!({
+                    "mode": "human",
+                    "target": "info",
+                }))
+                .unwrap(),
+            );
+        let req = req.to_request();
+        let ret = actix_web::test::call_service(&*handle_app, req).await;
+        actix_web::test::read_body(ret).await
+    });
+
+    // We're going to create an index to get at least one info log saying we processed a batch of task
+    let (ret, _code) = server.create_index(json!({ "uid": "tamo" })).await;
+    snapshot!(ret, @r###"
+    {
+      "taskUid": 0,
+      "indexUid": "tamo",
+      "status": "enqueued",
+      "type": "indexCreation",
+      "enqueuedAt": "[date]"
+    }
+    "###);
+    server.wait_task(ret.uid()).await;
+
+    let req = actix_web::test::TestRequest::delete().uri("/logs/stream");
+    let req = req.to_request();
+    let ret = actix_web::test::call_service(&*app, req).await;
+    let code = ret.status();
+    snapshot!(code, @"204 No Content");
+
+    let logs = handle.await.unwrap();
+    let logs = String::from_utf8(logs.to_vec()).unwrap();
+    assert!(logs.contains("INFO"), "{logs}");
+}

meilisearch/tests/search/hybrid.rs

@@ -13,9 +13,9 @@ async fn index_with_documents<'a>(server: &'a Server, documents: &Value) -> Inde
     meili_snap::snapshot!(code, @"200 OK");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "scoreDetails": false,
       "vectorStore": true,
       "metrics": false,
+      "logsRoute": false,
       "exportPuffinReports": false
     }
     "###);

meilisearch/tests/search/mod.rs

@@ -766,38 +766,14 @@ async fn faceting_max_values_per_facet() {
 }
 
 #[actix_rt::test]
-async fn experimental_feature_score_details() {
+async fn test_score_details() {
     let server = Server::new().await;
     let index = server.index("test");
 
     let documents = DOCUMENTS.clone();
 
-    index.add_documents(json!(documents), None).await;
+    let res = index.add_documents(json!(documents), None).await;
-    index.wait_task(0).await;
+    index.wait_task(res.0.uid()).await;
-
-    index
-        .search(
-            json!({
-                "q": "train dragon",
-                "showRankingScoreDetails": true,
-            }),
-            |response, code| {
-                meili_snap::snapshot!(code, @"400 Bad Request");
-                meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
-                {
-                  "message": "Computing score details requires enabling the `score details` experimental feature. See https://github.com/meilisearch/product/discussions/674",
-                  "code": "feature_not_enabled",
-                  "type": "invalid_request",
-                  "link": "https://docs.meilisearch.com/errors#feature_not_enabled"
-                }
-                "###);
-            },
-        )
-        .await;
-
-    let (response, code) = server.set_features(json!({"scoreDetails": true})).await;
-    meili_snap::snapshot!(code, @"200 OK");
-    meili_snap::snapshot!(response["scoreDetails"], @"true");
 
     index
         .search(

meilisearch/tests/tasks/webhook.rs

@@ -44,10 +44,6 @@ struct WebhookHandle {
 }
 
 async fn create_webhook_server() -> WebhookHandle {
-    let mut log_builder = env_logger::Builder::new();
-    log_builder.parse_filters("info");
-    log_builder.init();
-
     let (sender, receiver) = mpsc::unbounded_channel();
     let sender = Arc::new(sender);
 

milli/Cargo.toml

@@ -71,7 +71,6 @@ itertools = "0.11.0"
 puffin = "0.16.0"
 
 # logging
-log = "0.4.20"
 logging_timer = "1.1.0"
 csv = "1.3.0"
 candle-core = { git = "https://github.com/huggingface/candle.git", version = "0.3.1" }
@@ -91,6 +90,7 @@ tiktoken-rs = "0.5.8"
 liquid = "0.26.4"
 arroy = "0.2.0"
 rand = "0.8.5"
+tracing = "0.1.40"
 
 [dev-dependencies]
 mimalloc = { version = "0.1.39", default-features = false }
@@ -102,15 +102,7 @@ meili-snap = { path = "../meili-snap" }
 rand = { version = "0.8.5", features = ["small_rng"] }
 
 [features]
-all-tokenizations = [
+all-tokenizations = ["charabia/chinese", "charabia/hebrew", "charabia/japanese", "charabia/thai", "charabia/korean", "charabia/greek", "charabia/khmer"]
-    "charabia/chinese",
-    "charabia/hebrew",
-    "charabia/japanese",
-    "charabia/thai",
-    "charabia/korean",
-    "charabia/greek",
-    "charabia/khmer",
-]
 
 # Use POSIX semaphores instead of SysV semaphores in LMDB
 # For more information on this feature, see heed's Cargo.toml

milli/src/documents/reader.rs

@@ -25,6 +25,7 @@ impl<R: io::Read + io::Seek> DocumentsBatchReader<R> {
     ///
     /// It first retrieves the index, then moves to the first document. Use the `into_cursor`
     /// method to iterator over the documents, from the first to the last.
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
     pub fn from_reader(reader: R) -> Result<Self, Error> {
         let reader = grenad::Reader::new(reader)?;
         let mut cursor = reader.into_cursor()?;

milli/src/error.rs

@@ -227,6 +227,22 @@ only composed of alphanumeric characters (a-z A-Z 0-9), hyphens (-) and undersco
         source_: crate::vector::settings::EmbedderSource,
         embedder_name: String,
     },
+    #[error("`.embedders.{embedder_name}.dimensions`: Model `{model}` does not support overriding its native dimensions of {expected_dimensions}. Found {dimensions}")]
+    InvalidOpenAiModelDimensions {
+        embedder_name: String,
+        model: &'static str,
+        dimensions: usize,
+        expected_dimensions: usize,
+    },
+    #[error("`.embedders.{embedder_name}.dimensions`: Model `{model}` does not support overriding its dimensions to a value higher than {max_dimensions}. Found {dimensions}")]
+    InvalidOpenAiModelDimensionsMax {
+        embedder_name: String,
+        model: &'static str,
+        dimensions: usize,
+        max_dimensions: usize,
+    },
+    #[error("`.embedders.{embedder_name}.dimensions`: `dimensions` cannot be zero")]
+    InvalidSettingsDimensions { embedder_name: String },
 }
 
 impl From<crate::vector::Error> for Error {

milli/src/search/mod.rs

@@ -6,9 +6,9 @@ use charabia::Normalize;
 use fst::automaton::{Automaton, Str};
 use fst::{IntoStreamer, Streamer};
 use levenshtein_automata::{LevenshteinAutomatonBuilder as LevBuilder, DFA};
-use log::error;
 use once_cell::sync::Lazy;
 use roaring::bitmap::RoaringBitmap;
+use tracing::error;
 
 pub use self::facet::{FacetDistribution, Filter, OrderBy, DEFAULT_VALUES_PER_FACET};
 pub use self::new::matches::{FormatOptions, MatchBounds, MatcherBuilder, MatchingWords};

milli/src/search/new/bucket_sort.rs

@@ -166,6 +166,9 @@ pub fn bucket_sort<'ctx, Q: RankingRuleQueryTrait>(
             continue;
         }
 
+        let span = tracing::trace_span!(target: "search::bucket_sort", "next_bucket", id = ranking_rules[cur_ranking_rule_index].id());
+        let entered = span.enter();
+
         let Some(next_bucket) = ranking_rules[cur_ranking_rule_index].next_bucket(
             ctx,
             logger,
@@ -175,6 +178,7 @@ pub fn bucket_sort<'ctx, Q: RankingRuleQueryTrait>(
             back!();
             continue;
         };
+        drop(entered);
 
         ranking_rule_scores.push(next_bucket.score);
 

milli/src/update/clear_documents.rs

@@ -14,6 +14,12 @@ impl<'t, 'i> ClearDocuments<'t, 'i> {
         ClearDocuments { wtxn, index }
     }
 
+    #[tracing::instrument(
+        level = "trace",
+        skip(self),
+        target = "indexing::documents",
+        name = "clear_documents"
+    )]
     pub fn execute(self) -> Result<u64> {
         puffin::profile_function!();
 

milli/src/update/facet/mod.rs

@@ -85,8 +85,8 @@ use charabia::normalizer::{Normalize, NormalizerOption};
 use grenad::{CompressionType, SortAlgorithm};
 use heed::types::{Bytes, DecodeIgnore, SerdeJson};
 use heed::BytesEncode;
-use log::debug;
 use time::OffsetDateTime;
+use tracing::debug;
 
 use self::incremental::FacetsUpdateIncremental;
 use super::FacetsUpdateBulk;

milli/src/update/index_documents/enrich.rs

@@ -22,6 +22,7 @@ use crate::{FieldId, Index, Result};
 /// # Panics
 ///
 /// - if reader.is_empty(), this function may panic in some cases
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
 pub fn enrich_documents_batch<R: Read + Seek>(
     rtxn: &heed::RoTxn,
     index: &Index,
@@ -77,7 +78,7 @@ pub fn enrich_documents_batch<R: Read + Seek>(
                 },
                 [] => return Ok(Err(UserError::NoPrimaryKeyCandidateFound)),
                 [(field_id, name)] => {
-                    log::info!("Primary key was not specified in index. Inferred to '{name}'");
+                    tracing::info!("Primary key was not specified in index. Inferred to '{name}'");
                     PrimaryKey::Flat { name, field_id: *field_id }
                 }
                 multiple => {
@@ -143,6 +144,8 @@ pub fn enrich_documents_batch<R: Read + Seek>(
 
 /// Retrieve the document id after validating it, returning a `UserError`
 /// if the id is invalid or can't be guessed.
+#[tracing::instrument(level = "trace", skip(uuid_buffer, documents_batch_index, document)
+target = "indexing::documents")]
 fn fetch_or_generate_document_id(
     document: &obkv::KvReader<FieldId>,
     documents_batch_index: &DocumentsBatchIndex,

milli/src/update/index_documents/extract/extract_docid_word_positions.rs

@@ -21,7 +21,7 @@ pub type ScriptLanguageDocidsMap = HashMap<(Script, Language), (RoaringBitmap, R
 ///
 /// Returns the generated internal documents ids and a grenad reader
 /// with the list of extracted words from the given chunk of documents.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_docid_word_positions<R: io::Read + io::Seek>(
     obkv_documents: grenad::Reader<R>,
     indexer: GrenadParameters,

milli/src/update/index_documents/extract/extract_facet_number_docids.rs

@@ -16,7 +16,7 @@ use crate::Result;
 ///
 /// Returns a grenad reader with the list of extracted facet numbers and
 /// documents ids from the given chunk of docid facet number positions.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_facet_number_docids<R: io::Read + io::Seek>(
     fid_docid_facet_number: grenad::Reader<R>,
     indexer: GrenadParameters,

milli/src/update/index_documents/extract/extract_facet_string_docids.rs

@@ -15,7 +15,7 @@ use crate::{FieldId, Result};
 ///
 /// Returns a grenad reader with the list of extracted facet strings and
 /// documents ids from the given chunk of docid facet string positions.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_facet_string_docids<R: io::Read + io::Seek>(
     docid_fid_facet_string: grenad::Reader<R>,
     indexer: GrenadParameters,

milli/src/update/index_documents/extract/extract_fid_docid_facet_values.rs

@@ -39,7 +39,7 @@ pub struct ExtractedFacetValues {
 /// Returns the generated grenad reader containing the docid the fid and the orginal value as key
 /// and the normalized value as value extracted from the given chunk of documents.
 /// We need the fid of the geofields to correctly parse them as numbers if they were sent as strings initially.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_fid_docid_facet_values<R: io::Read + io::Seek>(
     obkv_documents: grenad::Reader<R>,
     indexer: GrenadParameters,
@@ -431,7 +431,7 @@ fn extract_facet_values(value: &Value, geo_field: bool) -> FilterableValues {
                     if let Ok(float) = original.parse() {
                         output_numbers.push(float);
                     } else {
-                        log::warn!(
+                        tracing::warn!(
                             "Internal error, could not parse a geofield that has been validated. Please open an issue."
                         )
                     }

milli/src/update/index_documents/extract/extract_fid_word_count_docids.rs

@@ -19,7 +19,7 @@ const MAX_COUNTED_WORDS: usize = 30;
 ///
 /// Returns a grenad reader with the list of extracted field id word counts
 /// and documents ids from the given chunk of docid word positions.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_fid_word_count_docids<R: io::Read + io::Seek>(
     docid_word_positions: grenad::Reader<R>,
     indexer: GrenadParameters,

milli/src/update/index_documents/extract/extract_geo_points.rs

@@ -13,7 +13,7 @@ use crate::{FieldId, InternalError, Result};
 /// Extracts the geographical coordinates contained in each document under the `_geo` field.
 ///
 /// Returns the generated grenad reader containing the docid as key associated to the (latitude, longitude)
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_geo_points<R: io::Read + io::Seek>(
     obkv_documents: grenad::Reader<R>,
     indexer: GrenadParameters,

milli/src/update/index_documents/extract/extract_vector_points.rs

@@ -67,7 +67,7 @@ impl VectorStateDelta {
 /// Extracts the embedding vector contained in each document under the `_vectors` field.
 ///
 /// Returns the generated grenad reader containing the docid as key associated to the Vec<f32>
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_vector_points<R: io::Read + io::Seek>(
     obkv_documents: grenad::Reader<R>,
     indexer: GrenadParameters,
@@ -186,12 +186,12 @@ pub fn extract_vector_points<R: io::Read + io::Seek>(
                         prompt.render(obkv, DelAdd::Deletion, field_id_map).unwrap_or_default();
                     let new_prompt = prompt.render(obkv, DelAdd::Addition, field_id_map)?;
                     if old_prompt != new_prompt {
-                        log::trace!(
+                        tracing::trace!(
                             "🚀 Changing prompt from\n{old_prompt}\n===to===\n{new_prompt}"
                         );
                         VectorStateDelta::NowGenerated(new_prompt)
                     } else {
-                        log::trace!("⏭️ Prompt unmodified, skipping");
+                        tracing::trace!("⏭️ Prompt unmodified, skipping");
                         VectorStateDelta::NoChange
                     }
                 } else {

milli/src/update/index_documents/extract/extract_word_docids.rs

@@ -23,7 +23,7 @@ use crate::{DocumentId, FieldId, Result};
 ///
 /// The first returned reader is the one for normal word_docids, and the second one is for
 /// exact_word_docids
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_word_docids<R: io::Read + io::Seek>(
     docid_word_positions: grenad::Reader<R>,
     indexer: GrenadParameters,
@@ -135,6 +135,7 @@ pub fn extract_word_docids<R: io::Read + io::Seek>(
     ))
 }
 
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 fn words_into_sorter(
     document_id: DocumentId,
     fid: FieldId,

milli/src/update/index_documents/extract/extract_word_pair_proximity_docids.rs

@@ -19,7 +19,7 @@ use crate::{DocumentId, Result};
 ///
 /// Returns a grenad reader with the list of extracted word pairs proximities and
 /// documents ids from the given chunk of docid word positions.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_word_pair_proximity_docids<R: io::Read + io::Seek>(
     docid_word_positions: grenad::Reader<R>,
     indexer: GrenadParameters,
@@ -59,6 +59,10 @@ pub fn extract_word_pair_proximity_docids<R: io::Read + io::Seek>(
         if current_document_id.map_or(false, |id| id != document_id) {
             puffin::profile_scope!("Document into sorter");
 
+            // FIXME: span inside of a hot loop might degrade performance and create big reports
+            let span = tracing::trace_span!(target: "indexing::details", "document_into_sorter");
+            let _entered = span.enter();
+
             document_word_positions_into_sorter(
                 current_document_id.unwrap(),
                 &del_word_pair_proximity,
@@ -138,6 +142,10 @@ pub fn extract_word_pair_proximity_docids<R: io::Read + io::Seek>(
 
     if let Some(document_id) = current_document_id {
         puffin::profile_scope!("Final document into sorter");
+        // FIXME: span inside of a hot loop might degrade performance and create big reports
+        let span = tracing::trace_span!(target: "indexing::details", "final_document_into_sorter");
+        let _entered = span.enter();
+
         document_word_positions_into_sorter(
             document_id,
             &del_word_pair_proximity,
@@ -147,6 +155,10 @@ pub fn extract_word_pair_proximity_docids<R: io::Read + io::Seek>(
     }
     {
         puffin::profile_scope!("sorter_into_reader");
+        // FIXME: span inside of a hot loop might degrade performance and create big reports
+        let span = tracing::trace_span!(target: "indexing::details", "sorter_into_reader");
+        let _entered = span.enter();
+
         let mut writer = create_writer(
             indexer.chunk_compression_type,
             indexer.chunk_compression_level,

milli/src/update/index_documents/extract/extract_word_position_docids.rs

@@ -18,7 +18,7 @@ use crate::{bucketed_position, DocumentId, Result};
 ///
 /// Returns a grenad reader with the list of extracted words at positions and
 /// documents ids from the given chunk of docid word positions.
-#[logging_timer::time]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub fn extract_word_position_docids<R: io::Read + io::Seek>(
     docid_word_positions: grenad::Reader<R>,
     indexer: GrenadParameters,
@@ -94,6 +94,7 @@ pub fn extract_word_position_docids<R: io::Read + io::Seek>(
     Ok(word_position_docids_reader)
 }
 
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 fn words_position_into_sorter(
     document_id: DocumentId,
     key_buffer: &mut Vec<u8>,

milli/src/update/index_documents/extract/mod.rs

@@ -14,8 +14,8 @@ use std::fs::File;
 use std::io::BufReader;
 
 use crossbeam_channel::Sender;
-use log::debug;
 use rayon::prelude::*;
+use tracing::debug;
 
 use self::extract_docid_word_positions::extract_docid_word_positions;
 use self::extract_facet_number_docids::extract_facet_number_docids;
@@ -41,6 +41,7 @@ use crate::{FieldId, FieldsIdsMap, Result};
 /// Extract data for each databases from obkv documents in parallel.
 /// Send data in grenad file over provided Sender.
 #[allow(clippy::too_many_arguments)]
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::extract")]
 pub(crate) fn data_from_obkv_documents(
     original_obkv_chunks: impl Iterator<Item = Result<grenad::Reader<BufReader<File>>>> + Send,
     flattened_obkv_chunks: impl Iterator<Item = Result<grenad::Reader<BufReader<File>>>> + Send,
@@ -113,7 +114,7 @@ pub(crate) fn data_from_obkv_documents(
     {
         let lmdb_writer_sx = lmdb_writer_sx.clone();
         rayon::spawn(move || {
-            debug!("merge {} database", "facet-id-exists-docids");
+            debug!(database = "facet-id-exists-docids", "merge");
             match facet_exists_docids_chunks.merge(merge_deladd_cbo_roaring_bitmaps, &indexer) {
                 Ok(reader) => {
                     let _ = lmdb_writer_sx.send(Ok(TypedChunk::FieldIdFacetExistsDocids(reader)));
@@ -129,7 +130,7 @@ pub(crate) fn data_from_obkv_documents(
     {
         let lmdb_writer_sx = lmdb_writer_sx.clone();
         rayon::spawn(move || {
-            debug!("merge {} database", "facet-id-is-null-docids");
+            debug!(database = "facet-id-is-null-docids", "merge");
             match facet_is_null_docids_chunks.merge(merge_deladd_cbo_roaring_bitmaps, &indexer) {
                 Ok(reader) => {
                     let _ = lmdb_writer_sx.send(Ok(TypedChunk::FieldIdFacetIsNullDocids(reader)));
@@ -145,7 +146,7 @@ pub(crate) fn data_from_obkv_documents(
     {
         let lmdb_writer_sx = lmdb_writer_sx.clone();
         rayon::spawn(move || {
-            debug!("merge {} database", "facet-id-is-empty-docids");
+            debug!(database = "facet-id-is-empty-docids", "merge");
             match facet_is_empty_docids_chunks.merge(merge_deladd_cbo_roaring_bitmaps, &indexer) {
                 Ok(reader) => {
                     let _ = lmdb_writer_sx.send(Ok(TypedChunk::FieldIdFacetIsEmptyDocids(reader)));
@@ -257,13 +258,22 @@ fn spawn_extraction_task<FE, FS, M>(
     M: MergeableReader + FromParallelIterator<M::Output> + Send + 'static,
     M::Output: Send,
 {
+    let current_span = tracing::Span::current();
+
     rayon::spawn(move || {
-        puffin::profile_scope!("extract_multiple_chunks", name);
+        let child_span =
+            tracing::trace_span!(target: "", parent: &current_span, "extract_multiple_chunks");
+        let _entered = child_span.enter();
+        puffin::profile_scope!("extract_multiple_chunksdexing::details, ", name);
         let chunks: Result<M> =
             chunks.into_par_iter().map(|chunk| extract_fn(chunk, indexer)).collect();
+        let current_span = tracing::Span::current();
+
         rayon::spawn(move || match chunks {
             Ok(chunks) => {
-                debug!("merge {} database", name);
+                let child_span = tracing::trace_span!(target: "", parent: &current_span, "merge_multiple_chunks");
+                let _entered = child_span.enter();
+                debug!(database = name, "merge");
                 puffin::profile_scope!("merge_multiple_chunks", name);
                 let reader = chunks.merge(merge_fn, &indexer);
                 let _ = lmdb_writer_sx.send(reader.map(serialize_fn));

milli/src/update/index_documents/helpers/grenad_helpers.rs

@@ -9,6 +9,10 @@ use super::{ClonableMmap, MergeFn};
 use crate::update::index_documents::valid_lmdb_key;
 use crate::Result;
 
+/// This is something reasonable given the fact
+/// that there is one grenad sorter by thread.
+const MAX_GRENAD_SORTER_USAGE: usize = 500 * 1024 * 1024; // 500 MiB
+
 pub type CursorClonableMmap = io::Cursor<ClonableMmap>;
 
 pub fn create_writer<R: io::Write>(
@@ -24,6 +28,9 @@ pub fn create_writer<R: io::Write>(
     builder.build(BufWriter::new(file))
 }
 
+/// A helper function that creates a grenad sorter
+/// with the given parameters. The max memory is
+/// clamped to something reasonable.
 pub fn create_sorter(
     sort_algorithm: grenad::SortAlgorithm,
     merge: MergeFn,
@@ -41,7 +48,7 @@ pub fn create_sorter(
         builder.max_nb_chunks(nb_chunks);
     }
     if let Some(memory) = max_memory {
-        builder.dump_threshold(memory);
+        builder.dump_threshold(memory.min(MAX_GRENAD_SORTER_USAGE));
         builder.allow_realloc(false);
     }
     builder.sort_algorithm(sort_algorithm);
@@ -49,6 +56,7 @@ pub fn create_sorter(
     builder.build()
 }
 
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::grenad")]
 pub fn sorter_into_reader(
     sorter: grenad::Sorter<MergeFn>,
     indexer: GrenadParameters,
@@ -187,10 +195,15 @@ impl Default for GrenadParameters {
 
 impl GrenadParameters {
     /// This function use the number of threads in the current threadpool to compute the value.
+    ///
     /// This should be called inside of a rayon thread pool,
-    /// Otherwise, it will take the global number of threads.
+    /// otherwise, it will take the global number of threads.
+    ///
+    /// The max memory cannot exceed a given reasonable value.
     pub fn max_memory_by_thread(&self) -> Option<usize> {
-        self.max_memory.map(|max_memory| max_memory / rayon::current_num_threads())
+        self.max_memory.map(|max_memory| {
+            (max_memory / rayon::current_num_threads()).min(MAX_GRENAD_SORTER_USAGE)
+        })
     }
 }
 
@@ -240,6 +253,7 @@ pub fn grenad_obkv_into_chunks<R: io::Read + io::Seek>(
 
 /// Write provided sorter in database using serialize_value function.
 /// merge_values function is used if an entry already exist in the database.
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::grenad")]
 pub fn write_sorter_into_database<K, V, FS, FM>(
     sorter: Sorter<MergeFn>,
     database: &heed::Database<K, V>,

milli/src/update/index_documents/mod.rs

@@ -13,11 +13,11 @@ use std::result::Result as StdResult;
 use crossbeam_channel::{Receiver, Sender};
 use heed::types::Str;
 use heed::Database;
-use log::debug;
 use rand::SeedableRng;
 use roaring::RoaringBitmap;
 use serde::{Deserialize, Serialize};
 use slice_group_by::GroupBy;
+use tracing::debug_span;
 use typed_chunk::{write_typed_chunk_into_index, TypedChunk};
 
 use self::enrich::enrich_documents_batch;
@@ -134,6 +134,7 @@ where
     /// return an error and not the `IndexDocuments` struct as it is invalid to use it afterward.
     ///
     /// Returns the number of documents added to the builder.
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
     pub fn add_documents<R: Read + Seek>(
         mut self,
         reader: DocumentsBatchReader<R>,
@@ -179,6 +180,7 @@ where
     /// Remove a batch of documents from the current builder.
     ///
     /// Returns the number of documents deleted from the builder.
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
     pub fn remove_documents(
         mut self,
         to_delete: Vec<String>,
@@ -214,6 +216,7 @@ where
     /// - No batching using the standards `remove_documents` and `add_documents` took place
     ///
     /// TODO: make it impossible to call `remove_documents` or `add_documents` on an instance that calls this function.
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::details")]
     pub fn remove_documents_from_db_no_batch(
         mut self,
         to_delete: &RoaringBitmap,
@@ -237,7 +240,12 @@ where
         Ok((self, deleted_documents))
     }
 
-    #[logging_timer::time("IndexDocuments::{}")]
+    #[tracing::instrument(
+        level = "trace"
+        skip_all,
+        target = "indexing::documents",
+        name = "index_documents"
+    )]
     pub fn execute(mut self) -> Result<DocumentAdditionResult> {
         puffin::profile_function!();
 
@@ -273,7 +281,12 @@ where
     }
 
     /// Returns the total number of documents in the index after the update.
-    #[logging_timer::time("IndexDocuments::{}")]
+    #[tracing::instrument(
+        level = "trace",
+        skip_all,
+        target = "profile::indexing::details",
+        name = "index_documents_raw"
+    )]
     pub fn execute_raw(self, output: TransformOutput) -> Result<u64>
     where
         FP: Fn(UpdateIndexingStep) + Sync,
@@ -374,8 +387,12 @@ where
 
         let cloned_embedder = self.embedders.clone();
 
+        let current_span = tracing::Span::current();
+
         // Run extraction pipeline in parallel.
         pool.install(|| {
+            let child_span = tracing::trace_span!(target: "indexing::details", parent: &current_span, "extract_and_send_grenad_chunks");
+            let _enter = child_span.enter();
             puffin::profile_scope!("extract_and_send_grenad_chunks");
             // split obkv file into several chunks
             let original_chunk_iter =
@@ -489,10 +506,7 @@ where
                     documents_seen: documents_seen_count as usize,
                     total_documents: documents_count,
                 });
-                debug!(
+                debug_span!("Seen", documents = documents_seen_count, total = documents_count);
-                    "We have seen {} documents on {} total document so far",
-                    documents_seen_count, documents_count
-                );
             }
             if is_merged_database {
                 databases_seen += 1;
@@ -543,7 +557,12 @@ where
         Ok(number_of_documents)
     }
 
-    #[logging_timer::time("IndexDocuments::{}")]
+    #[tracing::instrument(
+        level = "trace",
+        skip_all,
+        target = "indexing::prefix",
+        name = "index_documents_prefix_databases"
+    )]
     pub fn execute_prefix_databases(
         self,
         word_docids: Option<grenad::Reader<CursorClonableMmap>>,
@@ -598,6 +617,8 @@ where
         let del_prefix_fst_words;
 
         {
+            let span = tracing::trace_span!(target: "indexing::details", "compute_prefix_diffs");
+            let _entered = span.enter();
             puffin::profile_scope!("compute_prefix_diffs");
 
             current_prefix_fst = self.index.words_prefixes_fst(self.wtxn)?;
@@ -722,6 +743,12 @@ where
 
 /// Run the word prefix docids update operation.
 #[allow(clippy::too_many_arguments)]
+#[tracing::instrument(
+    level = "trace",
+    skip_all,
+    target = "indexing::prefix",
+    name = "index_documents_word_prefix_docids"
+)]
 fn execute_word_prefix_docids(
     txn: &mut heed::RwTxn,
     reader: grenad::Reader<Cursor<ClonableMmap>>,

milli/src/update/index_documents/transform.rs

@@ -146,7 +146,7 @@ impl<'a, 'i> Transform<'a, 'i> {
         })
     }
 
-    #[logging_timer::time]
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
     pub fn read_documents<R, FP, FA>(
         &mut self,
         reader: EnrichedDocumentsBatchReader<R>,
@@ -359,7 +359,7 @@ impl<'a, 'i> Transform<'a, 'i> {
     /// - If the document to remove was inserted by the `read_documents` method before but was NOT present in the db,
     ///   it's added into the grenad to ensure we don't insert it + removed from the list of new documents ids.
     /// - If the document to remove was not present in either the db or the transform we do nothing.
-    #[logging_timer::time]
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
     pub fn remove_documents<FA>(
         &mut self,
         mut to_remove: Vec<String>,
@@ -450,7 +450,7 @@ impl<'a, 'i> Transform<'a, 'i> {
     /// - No batching using the standards `remove_documents` and `add_documents` took place
     ///
     /// TODO: make it impossible to call `remove_documents` or `add_documents` on an instance that calls this function.
-    #[logging_timer::time]
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::details")]
     pub fn remove_documents_from_db_no_batch<FA>(
         &mut self,
         to_remove: &RoaringBitmap,
@@ -541,6 +541,7 @@ impl<'a, 'i> Transform<'a, 'i> {
 
     // Flatten a document from the fields ids map contained in self and insert the new
     // created fields. Returns `None` if the document doesn't need to be flattened.
+    #[tracing::instrument(level = "trace", skip(self, obkv), target = "indexing::transform")]
     fn flatten_from_fields_ids_map(&mut self, obkv: KvReader<FieldId>) -> Result<Option<Vec<u8>>> {
         if obkv
             .iter()
@@ -661,7 +662,7 @@ impl<'a, 'i> Transform<'a, 'i> {
     /// Generate the `TransformOutput` based on the given sorter that can be generated from any
     /// format like CSV, JSON or JSON stream. This sorter must contain a key that is the document
     /// id for the user side and the value must be an obkv where keys are valid fields ids.
-    #[logging_timer::time]
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::transform")]
     pub(crate) fn output_from_sorter<F>(
         self,
         wtxn: &mut heed::RwTxn,

milli/src/update/index_documents/typed_chunk.rs

@@ -115,6 +115,7 @@ impl TypedChunk {
 
 /// Write typed chunk in the corresponding LMDB database of the provided index.
 /// Return new documents seen.
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::write_db")]
 pub(crate) fn write_typed_chunk_into_index(
     typed_chunk: TypedChunk,
     index: &Index,
@@ -126,6 +127,8 @@ pub(crate) fn write_typed_chunk_into_index(
     let mut is_merged_database = false;
     match typed_chunk {
         TypedChunk::Documents(obkv_documents_iter) => {
+            let span = tracing::trace_span!(target: "indexing::write_db", "documents");
+            let _entered = span.enter();
             let mut operations: Vec<DocumentOperation> = Default::default();
 
             let mut docids = index.documents_ids(wtxn)?;
@@ -172,6 +175,9 @@ pub(crate) fn write_typed_chunk_into_index(
             index.put_documents_ids(wtxn, &docids)?;
         }
         TypedChunk::FieldIdWordCountDocids(fid_word_count_docids_iter) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "field_id_word_count_docids");
+            let _entered = span.enter();
             append_entries_into_database(
                 fid_word_count_docids_iter,
                 &index.field_id_word_count_docids,
@@ -187,6 +193,8 @@ pub(crate) fn write_typed_chunk_into_index(
             exact_word_docids_reader,
             word_fid_docids_reader,
         } => {
+            let span = tracing::trace_span!(target: "indexing::write_db", "word_docids");
+            let _entered = span.enter();
             let word_docids_iter = unsafe { as_cloneable_grenad(&word_docids_reader) }?;
             append_entries_into_database(
                 word_docids_iter.clone(),
@@ -230,6 +238,8 @@ pub(crate) fn write_typed_chunk_into_index(
             is_merged_database = true;
         }
         TypedChunk::WordPositionDocids(word_position_docids_iter) => {
+            let span = tracing::trace_span!(target: "indexing::write_db", "word_position_docids");
+            let _entered = span.enter();
             append_entries_into_database(
                 word_position_docids_iter,
                 &index.word_position_docids,
@@ -241,16 +251,25 @@ pub(crate) fn write_typed_chunk_into_index(
             is_merged_database = true;
         }
         TypedChunk::FieldIdFacetNumberDocids(facet_id_number_docids_iter) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db","field_id_facet_number_docids");
+            let _entered = span.enter();
             let indexer = FacetsUpdate::new(index, FacetType::Number, facet_id_number_docids_iter);
             indexer.execute(wtxn)?;
             is_merged_database = true;
         }
         TypedChunk::FieldIdFacetStringDocids(facet_id_string_docids_iter) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "field_id_facet_string_docids");
+            let _entered = span.enter();
             let indexer = FacetsUpdate::new(index, FacetType::String, facet_id_string_docids_iter);
             indexer.execute(wtxn)?;
             is_merged_database = true;
         }
         TypedChunk::FieldIdFacetExistsDocids(facet_id_exists_docids) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "field_id_facet_exists_docids");
+            let _entered = span.enter();
             append_entries_into_database(
                 facet_id_exists_docids,
                 &index.facet_id_exists_docids,
@@ -262,6 +281,9 @@ pub(crate) fn write_typed_chunk_into_index(
             is_merged_database = true;
         }
         TypedChunk::FieldIdFacetIsNullDocids(facet_id_is_null_docids) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "field_id_facet_is_null_docids");
+            let _entered = span.enter();
             append_entries_into_database(
                 facet_id_is_null_docids,
                 &index.facet_id_is_null_docids,
@@ -273,6 +295,8 @@ pub(crate) fn write_typed_chunk_into_index(
             is_merged_database = true;
         }
         TypedChunk::FieldIdFacetIsEmptyDocids(facet_id_is_empty_docids) => {
+            let span = tracing::trace_span!(target: "profile::indexing::write_db", "field_id_facet_is_empty_docids");
+            let _entered = span.enter();
             append_entries_into_database(
                 facet_id_is_empty_docids,
                 &index.facet_id_is_empty_docids,
@@ -284,6 +308,9 @@ pub(crate) fn write_typed_chunk_into_index(
             is_merged_database = true;
         }
         TypedChunk::WordPairProximityDocids(word_pair_proximity_docids_iter) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "word_pair_proximity_docids");
+            let _entered = span.enter();
             append_entries_into_database(
                 word_pair_proximity_docids_iter,
                 &index.word_pair_proximity_docids,
@@ -295,6 +322,9 @@ pub(crate) fn write_typed_chunk_into_index(
             is_merged_database = true;
         }
         TypedChunk::FieldIdDocidFacetNumbers(fid_docid_facet_number) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "field_id_docid_facet_numbers");
+            let _entered = span.enter();
             let index_fid_docid_facet_numbers =
                 index.field_id_docid_facet_f64s.remap_types::<Bytes, Bytes>();
             let mut cursor = fid_docid_facet_number.into_cursor()?;
@@ -315,6 +345,9 @@ pub(crate) fn write_typed_chunk_into_index(
             }
         }
         TypedChunk::FieldIdDocidFacetStrings(fid_docid_facet_string) => {
+            let span =
+                tracing::trace_span!(target: "indexing::write_db", "field_id_docid_facet_strings");
+            let _entered = span.enter();
             let index_fid_docid_facet_strings =
                 index.field_id_docid_facet_strings.remap_types::<Bytes, Bytes>();
             let mut cursor = fid_docid_facet_string.into_cursor()?;
@@ -335,6 +368,8 @@ pub(crate) fn write_typed_chunk_into_index(
             }
         }
         TypedChunk::GeoPoints(geo_points) => {
+            let span = tracing::trace_span!(target: "indexing::write_db", "geo_points");
+            let _entered = span.enter();
             let mut rtree = index.geo_rtree(wtxn)?.unwrap_or_default();
             let mut geo_faceted_docids = index.geo_faceted_documents_ids(wtxn)?;
 
@@ -365,6 +400,8 @@ pub(crate) fn write_typed_chunk_into_index(
             expected_dimension,
             embedder_name,
         } => {
+            let span = tracing::trace_span!(target: "indexing::write_db", "vector_points");
+            let _entered = span.enter();
             let embedder_index = index.embedder_category_id.get(wtxn, &embedder_name)?.ok_or(
                 InternalError::DatabaseMissingEntry { db_name: "embedder_category_id", key: None },
             )?;
@@ -480,9 +517,11 @@ pub(crate) fn write_typed_chunk_into_index(
                 }
             }
 
-            log::debug!("Finished vector chunk for {}", embedder_name);
+            tracing::debug!("Finished vector chunk for {}", embedder_name);
         }
         TypedChunk::ScriptLanguageDocids(sl_map) => {
+            let span = tracing::trace_span!(target: "indexing::write_db", "script_language_docids");
+            let _entered = span.enter();
             for (key, (deletion, addition)) in sl_map {
                 let mut db_key_exists = false;
                 let final_value = match index.script_language_docids.get(wtxn, &key)? {
@@ -536,6 +575,7 @@ fn merge_word_docids_reader_into_fst(
 
 /// Write provided entries in database using serialize_value function.
 /// merge_values function is used if an entry already exist in the database.
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::write_db")]
 fn write_entries_into_database<R, K, V, FS, FM>(
     data: grenad::Reader<R>,
     database: &heed::Database<K, V>,
@@ -582,6 +622,7 @@ where
 /// merge_values function is used if an entry already exist in the database.
 /// All provided entries must be ordered.
 /// If the index is not empty, write_entries_into_database is called instead.
+#[tracing::instrument(level = "trace", skip_all, target = "indexing::write_db")]
 fn append_entries_into_database<R, K, V, FS, FM>(
     data: grenad::Reader<R>,
     database: &heed::Database<K, V>,

milli/src/update/settings.rs

@@ -372,6 +372,11 @@ impl<'a, 't, 'i> Settings<'a, 't, 'i> {
         self.embedder_settings = Setting::Reset;
     }
 
+    #[tracing::instrument(
+        level = "trace"
+        skip(self, progress_callback, should_abort, old_fields_ids_map),
+        target = "indexing::documents"
+    )]
     fn reindex<FP, FA>(
         &mut self,
         progress_callback: &FP,
@@ -974,6 +979,9 @@ impl<'a, 't, 'i> Settings<'a, 't, 'i> {
                             crate::vector::settings::EmbeddingSettings::apply_default_source(
                                 &mut setting,
                             );
+                            crate::vector::settings::EmbeddingSettings::apply_default_openai_model(
+                                &mut setting,
+                            );
                             let setting = validate_embedding_settings(setting, &name)?;
                             changed = true;
                             new_configs.insert(name, setting);
@@ -1119,6 +1127,14 @@ pub fn validate_embedding_settings(
     let Setting::Set(settings) = settings else { return Ok(settings) };
     let EmbeddingSettings { source, model, revision, api_key, dimensions, document_template } =
         settings;
+
+    if let Some(0) = dimensions.set() {
+        return Err(crate::error::UserError::InvalidSettingsDimensions {
+            embedder_name: name.to_owned(),
+        }
+        .into());
+    }
+
     let Some(inferred_source) = source.set() else {
         return Ok(Setting::Set(EmbeddingSettings {
             source,
@@ -1132,14 +1148,34 @@ pub fn validate_embedding_settings(
     match inferred_source {
         EmbedderSource::OpenAi => {
             check_unset(&revision, "revision", inferred_source, name)?;
-            check_unset(&dimensions, "dimensions", inferred_source, name)?;
             if let Setting::Set(model) = &model {
-                crate::vector::openai::EmbeddingModel::from_name(model.as_str()).ok_or(
+                let model = crate::vector::openai::EmbeddingModel::from_name(model.as_str())
-                    crate::error::UserError::InvalidOpenAiModel {
+                    .ok_or(crate::error::UserError::InvalidOpenAiModel {
                         embedder_name: name.to_owned(),
                         model: model.clone(),
-                    },
+                    })?;
-                )?;
+                if let Setting::Set(dimensions) = dimensions {
+                    if !model.supports_overriding_dimensions()
+                        && dimensions != model.default_dimensions()
+                    {
+                        return Err(crate::error::UserError::InvalidOpenAiModelDimensions {
+                            embedder_name: name.to_owned(),
+                            model: model.name(),
+                            dimensions,
+                            expected_dimensions: model.default_dimensions(),
+                        }
+                        .into());
+                    }
+                    if dimensions > model.default_dimensions() {
+                        return Err(crate::error::UserError::InvalidOpenAiModelDimensionsMax {
+                            embedder_name: name.to_owned(),
+                            model: model.name(),
+                            dimensions,
+                            max_dimensions: model.default_dimensions(),
+                        }
+                        .into());
+                    }
+                }
             }
         }
         EmbedderSource::HuggingFace => {

milli/src/update/word_prefix_docids.rs

@@ -39,7 +39,12 @@ impl<'t, 'i> WordPrefixDocids<'t, 'i> {
         }
     }
 
-    #[logging_timer::time("WordPrefixDocids::{}")]
+    #[tracing::instrument(
+        level = "trace",
+        skip_all,
+        target = "indexing::prefix",
+        name = "word_prefix_docids"
+    )]
     pub fn execute(
         self,
         mut new_word_docids_iter: grenad::ReaderCursor<CursorClonableMmap>,

milli/src/update/words_prefix_integer_docids.rs

@@ -4,7 +4,7 @@ use std::str;
 use grenad::CompressionType;
 use heed::types::Bytes;
 use heed::{BytesDecode, BytesEncode, Database};
-use log::debug;
+use tracing::debug;
 
 use crate::error::SerializationError;
 use crate::heed_codec::StrBEU16Codec;
@@ -44,7 +44,12 @@ impl<'t, 'i> WordPrefixIntegerDocids<'t, 'i> {
         }
     }
 
-    #[logging_timer::time("WordPrefixIntegerDocids::{}")]
+    #[tracing::instrument(
+        level = "trace",
+        skip_all,
+        target = "indexing::prefix",
+        name = "words_prefix_integer_docids"
+    )]
     pub fn execute(
         self,
         new_word_integer_docids: grenad::Reader<CursorClonableMmap>,

milli/src/update/words_prefixes_fst.rs

@@ -38,7 +38,12 @@ impl<'t, 'i> WordsPrefixesFst<'t, 'i> {
         self
     }
 
-    #[logging_timer::time("WordsPrefixesFst::{}")]
+    #[tracing::instrument(
+        level = "trace",
+        skip_all,
+        target = "indexing::prefix",
+        name = "words_prefix_fst"
+    )]
     pub fn execute(self) -> Result<()> {
         puffin::profile_function!();
 

milli/src/vector/hf.rs

@@ -73,7 +73,7 @@ impl Embedder {
         let device = match candle_core::Device::cuda_if_available(0) {
             Ok(device) => device,
             Err(error) => {
-                log::warn!("could not initialize CUDA device for Hugging Face embedder, defaulting to CPU: {}", error);
+                tracing::warn!("could not initialize CUDA device for Hugging Face embedder, defaulting to CPU: {}", error);
                 candle_core::Device::Cpu
             }
         };

milli/src/vector/openai.rs

@@ -17,6 +17,7 @@ pub struct Embedder {
 pub struct EmbedderOptions {
     pub api_key: Option<String>,
     pub embedding_model: EmbeddingModel,
+    pub dimensions: Option<usize>,
 }
 
 #[derive(
@@ -41,34 +42,50 @@ pub enum EmbeddingModel {
     #[serde(rename = "text-embedding-ada-002")]
     #[deserr(rename = "text-embedding-ada-002")]
     TextEmbeddingAda002,
+
+    #[serde(rename = "text-embedding-3-small")]
+    #[deserr(rename = "text-embedding-3-small")]
+    TextEmbedding3Small,
+
+    #[serde(rename = "text-embedding-3-large")]
+    #[deserr(rename = "text-embedding-3-large")]
+    TextEmbedding3Large,
 }
 
 impl EmbeddingModel {
     pub fn supported_models() -> &'static [&'static str] {
-        &["text-embedding-ada-002"]
+        &["text-embedding-ada-002", "text-embedding-3-small", "text-embedding-3-large"]
     }
 
     pub fn max_token(&self) -> usize {
         match self {
             EmbeddingModel::TextEmbeddingAda002 => 8191,
+            EmbeddingModel::TextEmbedding3Large => 8191,
+            EmbeddingModel::TextEmbedding3Small => 8191,
         }
     }
 
-    pub fn dimensions(&self) -> usize {
+    pub fn default_dimensions(&self) -> usize {
         match self {
             EmbeddingModel::TextEmbeddingAda002 => 1536,
+            EmbeddingModel::TextEmbedding3Large => 3072,
+            EmbeddingModel::TextEmbedding3Small => 1536,
         }
     }
 
     pub fn name(&self) -> &'static str {
         match self {
             EmbeddingModel::TextEmbeddingAda002 => "text-embedding-ada-002",
+            EmbeddingModel::TextEmbedding3Large => "text-embedding-3-large",
+            EmbeddingModel::TextEmbedding3Small => "text-embedding-3-small",
         }
     }
 
     pub fn from_name(name: &str) -> Option<Self> {
         match name {
             "text-embedding-ada-002" => Some(EmbeddingModel::TextEmbeddingAda002),
+            "text-embedding-3-large" => Some(EmbeddingModel::TextEmbedding3Large),
+            "text-embedding-3-small" => Some(EmbeddingModel::TextEmbedding3Small),
             _ => None,
         }
     }
@@ -78,6 +95,20 @@ impl EmbeddingModel {
             EmbeddingModel::TextEmbeddingAda002 => {
                 Some(DistributionShift { current_mean: 0.90, current_sigma: 0.08 })
             }
+            EmbeddingModel::TextEmbedding3Large => {
+                Some(DistributionShift { current_mean: 0.70, current_sigma: 0.1 })
+            }
+            EmbeddingModel::TextEmbedding3Small => {
+                Some(DistributionShift { current_mean: 0.75, current_sigma: 0.1 })
+            }
+        }
+    }
+
+    pub fn supports_overriding_dimensions(&self) -> bool {
+        match self {
+            EmbeddingModel::TextEmbeddingAda002 => false,
+            EmbeddingModel::TextEmbedding3Large => true,
+            EmbeddingModel::TextEmbedding3Small => true,
         }
     }
 }
@@ -86,11 +117,11 @@ pub const OPENAI_EMBEDDINGS_URL: &str = "https://api.openai.com/v1/embeddings";
 
 impl EmbedderOptions {
     pub fn with_default_model(api_key: Option<String>) -> Self {
-        Self { api_key, embedding_model: Default::default() }
+        Self { api_key, embedding_model: Default::default(), dimensions: None }
     }
 
     pub fn with_embedding_model(api_key: Option<String>, embedding_model: EmbeddingModel) -> Self {
-        Self { api_key, embedding_model }
+        Self { api_key, embedding_model, dimensions: None }
     }
 }
 
@@ -142,12 +173,16 @@ impl Embedder {
             let retry_duration = match result {
                 Ok(embeddings) => return Ok(embeddings),
                 Err(retry) => {
-                    log::warn!("Failed: {}", retry.error);
+                    tracing::warn!("Failed: {}", retry.error);
                     tokenized |= retry.must_tokenize();
                     retry.into_duration(attempt)
                 }
             }?;
-            log::warn!("Attempt #{}, retrying after {}ms.", attempt, retry_duration.as_millis());
+            tracing::warn!(
+                "Attempt #{}, retrying after {}ms.",
+                attempt,
+                retry_duration.as_millis()
+            );
             tokio::time::sleep(retry_duration).await;
         }
 
@@ -213,7 +248,7 @@ impl Embedder {
                         .map_err(EmbedError::openai_unexpected)
                         .map_err(Retry::retry_later)?;
 
-                    log::warn!("OpenAI: input was too long, retrying on tokenized version. For best performance, limit the size of your prompt.");
+                    tracing::warn!("OpenAI: input was too long, retrying on tokenized version. For best performance, limit the size of your prompt.");
 
                     return Err(Retry::retry_tokenized(EmbedError::openai_too_many_tokens(
                         error_response.error,
@@ -235,9 +270,13 @@ impl Embedder {
         client: &reqwest::Client,
     ) -> Result<Vec<Embeddings<f32>>, Retry> {
         for text in texts {
-            log::trace!("Received prompt: {}", text.as_ref())
+            tracing::trace!("Received prompt: {}", text.as_ref())
         }
-        let request = OpenAiRequest { model: self.options.embedding_model.name(), input: texts };
+        let request = OpenAiRequest {
+            model: self.options.embedding_model.name(),
+            input: texts,
+            dimensions: self.overriden_dimensions(),
+        };
         let response = client
             .post(OPENAI_EMBEDDINGS_URL)
             .json(&request)
@@ -254,7 +293,7 @@ impl Embedder {
             .map_err(EmbedError::openai_unexpected)
             .map_err(Retry::retry_later)?;
 
-        log::trace!("response: {:?}", response.data);
+        tracing::trace!("response: {:?}", response.data);
 
         Ok(response
             .data
@@ -280,8 +319,7 @@ impl Embedder {
             }
 
             let mut tokens = encoded.as_slice();
-            let mut embeddings_for_prompt =
+            let mut embeddings_for_prompt = Embeddings::new(self.dimensions());
-                Embeddings::new(self.options.embedding_model.dimensions());
             while tokens.len() > max_token_count {
                 let window = &tokens[..max_token_count];
                 embeddings_for_prompt.push(self.embed_tokens(window, client).await?).unwrap();
@@ -322,8 +360,11 @@ impl Embedder {
         tokens: &[usize],
         client: &reqwest::Client,
     ) -> Result<Embedding, Retry> {
-        let request =
+        let request = OpenAiTokensRequest {
-            OpenAiTokensRequest { model: self.options.embedding_model.name(), input: tokens };
+            model: self.options.embedding_model.name(),
+            input: tokens,
+            dimensions: self.overriden_dimensions(),
+        };
         let response = client
             .post(OPENAI_EMBEDDINGS_URL)
             .json(&request)
@@ -366,12 +407,24 @@ impl Embedder {
     }
 
     pub fn dimensions(&self) -> usize {
-        self.options.embedding_model.dimensions()
+        if self.options.embedding_model.supports_overriding_dimensions() {
+            self.options.dimensions.unwrap_or(self.options.embedding_model.default_dimensions())
+        } else {
+            self.options.embedding_model.default_dimensions()
+        }
     }
 
     pub fn distribution(&self) -> Option<DistributionShift> {
         self.options.embedding_model.distribution()
     }
+
+    fn overriden_dimensions(&self) -> Option<usize> {
+        if self.options.embedding_model.supports_overriding_dimensions() {
+            self.options.dimensions
+        } else {
+            None
+        }
+    }
 }
 
 // retrying in case of failure
@@ -431,12 +484,16 @@ impl Retry {
 struct OpenAiRequest<'a, S: AsRef<str> + serde::Serialize> {
     model: &'a str,
     input: &'a [S],
+    #[serde(skip_serializing_if = "Option::is_none")]
+    dimensions: Option<usize>,
 }
 
 #[derive(Debug, Serialize)]
 struct OpenAiTokensRequest<'a> {
     model: &'a str,
     input: &'a [usize],
+    #[serde(skip_serializing_if = "Option::is_none")]
+    dimensions: Option<usize>,
 }
 
 #[derive(Debug, Deserialize)]

milli/src/vector/settings.rs

@@ -1,6 +1,7 @@
 use deserr::Deserr;
 use serde::{Deserialize, Serialize};
 
+use super::openai;
 use crate::prompt::PromptData;
 use crate::update::Setting;
 use crate::vector::EmbeddingConfig;
@@ -82,7 +83,7 @@ impl EmbeddingSettings {
             Self::MODEL => &[EmbedderSource::HuggingFace, EmbedderSource::OpenAi],
             Self::REVISION => &[EmbedderSource::HuggingFace],
             Self::API_KEY => &[EmbedderSource::OpenAi],
-            Self::DIMENSIONS => &[EmbedderSource::UserProvided],
+            Self::DIMENSIONS => &[EmbedderSource::OpenAi, EmbedderSource::UserProvided],
             Self::DOCUMENT_TEMPLATE => &[EmbedderSource::HuggingFace, EmbedderSource::OpenAi],
             _other => unreachable!("unknown field"),
         }
@@ -90,9 +91,13 @@ impl EmbeddingSettings {
 
     pub fn allowed_fields_for_source(source: EmbedderSource) -> &'static [&'static str] {
         match source {
-            EmbedderSource::OpenAi => {
+            EmbedderSource::OpenAi => &[
-                &[Self::SOURCE, Self::MODEL, Self::API_KEY, Self::DOCUMENT_TEMPLATE]
+                Self::SOURCE,
-            }
+                Self::MODEL,
+                Self::API_KEY,
+                Self::DOCUMENT_TEMPLATE,
+                Self::DIMENSIONS,
+            ],
             EmbedderSource::HuggingFace => {
                 &[Self::SOURCE, Self::MODEL, Self::REVISION, Self::DOCUMENT_TEMPLATE]
             }
@@ -109,6 +114,17 @@ impl EmbeddingSettings {
             *source = Setting::Set(EmbedderSource::default())
         }
     }
+
+    pub(crate) fn apply_default_openai_model(setting: &mut Setting<EmbeddingSettings>) {
+        if let Setting::Set(EmbeddingSettings {
+            source: Setting::Set(EmbedderSource::OpenAi),
+            model: model @ (Setting::NotSet | Setting::Reset),
+            ..
+        }) = setting
+        {
+            *model = Setting::Set(openai::EmbeddingModel::default().name().to_owned())
+        }
+    }
 }
 
 #[derive(Debug, Clone, Copy, Default, Serialize, Deserialize, PartialEq, Eq, Deserr)]
@@ -176,7 +192,7 @@ impl From<EmbeddingConfig> for EmbeddingSettings {
                 model: Setting::Set(options.embedding_model.name().to_owned()),
                 revision: Setting::NotSet,
                 api_key: options.api_key.map(Setting::Set).unwrap_or_default(),
-                dimensions: Setting::NotSet,
+                dimensions: options.dimensions.map(Setting::Set).unwrap_or_default(),
                 document_template: Setting::Set(prompt.template),
             },
             super::EmbedderOptions::UserProvided(options) => Self {
@@ -208,6 +224,9 @@ impl From<EmbeddingSettings> for EmbeddingConfig {
                     if let Some(api_key) = api_key.set() {
                         options.api_key = Some(api_key);
                     }
+                    if let Some(dimensions) = dimensions.set() {
+                        options.dimensions = Some(dimensions);
+                    }
                     this.embedder_options = super::EmbedderOptions::OpenAi(options);
                 }
                 EmbedderSource::HuggingFace => {

tracing-trace/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "tracing-trace"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+color-spantrace = "0.2.1"
+fxprof-processed-profile = "0.6.0"
+serde = { version = "1.0.195", features = ["derive"] }
+serde_json = "1.0.111"
+tracing = "0.1.40"
+tracing-error = "0.2.0"
+tracing-subscriber = "0.3.18"
+byte-unit = { version = "4.0.19", default-features = false, features = [
+    "std",
+    "serde",
+] }
+tokio = { version = "1.35.1", features = ["sync"] }
+
+[target.'cfg(any(target_os = "linux", target_os = "macos"))'.dependencies]
+libproc = "0.14.2"

tracing-trace/src/bin/trace-to-callstats.rs

@@ -0,0 +1,21 @@
+use std::ffi::OsString;
+use std::io::Write;
+
+use serde_json::json;
+
+fn main() {
+    let input_file = std::env::args_os().nth(1).expect("missing <INPUT> file");
+    let input =
+        std::io::BufReader::new(std::fs::File::open(&input_file).expect("could not open <INPUT>"));
+    let trace = tracing_trace::TraceReader::new(input);
+    let profile = tracing_trace::processor::span_stats::to_call_stats(trace).unwrap();
+    let mut output_file = OsString::new();
+    output_file.push("callstats-");
+    output_file.push(input_file);
+    let mut output_file = std::io::BufWriter::new(std::fs::File::create(output_file).unwrap());
+    for (key, value) in profile {
+        serde_json::to_writer(&mut output_file, &json!({key: value})).unwrap();
+        writeln!(&mut output_file).unwrap();
+    }
+    output_file.flush().unwrap();
+}

tracing-trace/src/bin/trace-to-firefox.rs

@@ -0,0 +1,18 @@
+use std::ffi::OsString;
+use std::io::Write;
+
+fn main() {
+    let input_file = std::env::args_os().nth(1).expect("missing <INPUT> file");
+    let input =
+        std::io::BufReader::new(std::fs::File::open(&input_file).expect("could not open <INPUT>"));
+    let trace = tracing_trace::TraceReader::new(input);
+    let profile =
+        tracing_trace::processor::firefox_profiler::to_firefox_profile(trace, "Meilisearch")
+            .unwrap();
+    let mut output_file = OsString::new();
+    output_file.push("firefox-");
+    output_file.push(input_file);
+    let mut output_file = std::io::BufWriter::new(std::fs::File::create(output_file).unwrap());
+    serde_json::to_writer(&mut output_file, &profile).unwrap();
+    output_file.flush().unwrap();
+}

tracing-trace/src/entry.rs

@@ -0,0 +1,141 @@
+use std::borrow::Cow;
+
+use serde::{Deserialize, Serialize};
+use tracing::span::Id as TracingId;
+
+#[derive(Debug, Serialize, Deserialize)]
+pub enum Entry {
+    /// A code location was accessed for the first time
+    NewCallsite(NewCallsite),
+
+    /// A new thread was accessed
+    NewThread(NewThread),
+
+    /// A new call started
+    NewSpan(NewSpan),
+
+    /// An already in-flight call started doing work.
+    ///
+    /// For synchronous functions, open should always be followed immediately by enter, exit and close,
+    /// but for asynchronous functions, work can suspend (exiting the span without closing it), and then
+    /// later resume (entering the span again without opening it).
+    ///
+    /// The timer for a span only starts when the span is entered.
+    SpanEnter(SpanEnter),
+
+    /// An in-flight call suspended and paused work.
+    ///
+    /// For synchronous functions, exit should always be followed immediately by close,
+    /// but for asynchronous functions, work can suspend and then later resume.
+    ///
+    /// The timer for a span pauses when the span is exited.
+    SpanExit(SpanExit),
+
+    /// A call ended
+    SpanClose(SpanClose),
+
+    /// An event occurred
+    Event(Event),
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, Eq, Hash)]
+pub struct SpanId(u64);
+
+impl From<&TracingId> for SpanId {
+    fn from(value: &TracingId) -> Self {
+        Self(value.into_u64())
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct NewCallsite {
+    pub call_id: ResourceId,
+    pub name: Cow<'static, str>,
+    pub module_path: Option<Cow<'static, str>>,
+    pub file: Option<Cow<'static, str>>,
+    pub line: Option<u32>,
+    pub target: Cow<'static, str>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct NewThread {
+    pub thread_id: ResourceId,
+    pub name: Option<String>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct SpanEnter {
+    pub id: SpanId,
+    pub time: std::time::Duration,
+    pub memory: Option<MemoryStats>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct SpanExit {
+    pub id: SpanId,
+    pub time: std::time::Duration,
+    pub memory: Option<MemoryStats>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct Event {
+    pub call_id: ResourceId,
+    pub thread_id: ResourceId,
+    pub parent_id: Option<SpanId>,
+    pub time: std::time::Duration,
+    pub memory: Option<MemoryStats>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct NewSpan {
+    pub id: SpanId,
+    pub call_id: ResourceId,
+    pub parent_id: Option<SpanId>,
+    pub thread_id: ResourceId,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct SpanClose {
+    pub id: SpanId,
+    pub time: std::time::Duration,
+}
+
+/// A struct with a memory allocation stat.
+#[derive(Debug, Default, Clone, Copy, Serialize, Deserialize)]
+pub struct MemoryStats {
+    /// Resident set size, measured in bytes.
+    /// (same as VmRSS in /proc/<pid>/status).
+    pub resident: u64,
+}
+
+impl MemoryStats {
+    #[cfg(any(target_os = "linux", target_os = "macos"))]
+    pub fn fetch() -> Option<Self> {
+        use libproc::libproc::pid_rusage::{pidrusage, RUsageInfoV0};
+
+        match pidrusage(std::process::id() as i32) {
+            Ok(RUsageInfoV0 { ri_resident_size, .. }) => {
+                Some(MemoryStats { resident: ri_resident_size })
+            }
+            Err(_) => None, /* ignoring error to avoid spamming */
+        }
+    }
+
+    #[cfg(not(any(target_os = "linux", target_os = "macos")))]
+    pub fn fetch() -> Option<Self> {
+        None
+    }
+
+    pub fn checked_sub(self, other: Self) -> Option<Self> {
+        Some(Self { resident: self.resident.checked_sub(other.resident)? })
+    }
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq, Hash)]
+pub struct ResourceId(pub(crate) usize);
+
+impl ResourceId {
+    pub fn to_usize(self) -> usize {
+        self.0
+    }
+}

tracing-trace/src/error.rs

@@ -0,0 +1,21 @@
+#[derive(Debug)]
+pub enum Error {
+    Json(serde_json::Error),
+}
+
+impl std::error::Error for Error {}
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str("error de/serializing trace entry:")?;
+        match self {
+            Error::Json(error) => std::fmt::Display::fmt(&error, f),
+        }
+    }
+}
+
+impl From<serde_json::Error> for Error {
+    fn from(value: serde_json::Error) -> Self {
+        Self::Json(value)
+    }
+}

tracing-trace/src/layer.rs

@@ -0,0 +1,208 @@
+use std::borrow::Cow;
+use std::collections::HashMap;
+use std::io::Write;
+use std::ops::ControlFlow;
+use std::sync::RwLock;
+
+use tracing::span::{Attributes, Id as TracingId};
+use tracing::{Metadata, Subscriber};
+use tracing_subscriber::layer::Context;
+use tracing_subscriber::Layer;
+
+use crate::entry::{
+    Entry, Event, MemoryStats, NewCallsite, NewSpan, NewThread, ResourceId, SpanClose, SpanEnter,
+    SpanExit, SpanId,
+};
+use crate::{Error, Trace, TraceWriter};
+
+/// Layer that measures the time spent in spans.
+pub struct TraceLayer {
+    sender: tokio::sync::mpsc::UnboundedSender<Entry>,
+    callsites: RwLock<HashMap<OpaqueIdentifier, ResourceId>>,
+    start_time: std::time::Instant,
+    profile_memory: bool,
+}
+
+impl Trace {
+    pub fn new(profile_memory: bool) -> (Self, TraceLayer) {
+        let (sender, receiver) = tokio::sync::mpsc::unbounded_channel();
+        let trace = Trace { receiver };
+        let layer = TraceLayer {
+            sender,
+            callsites: Default::default(),
+            start_time: std::time::Instant::now(),
+            profile_memory,
+        };
+        (trace, layer)
+    }
+}
+
+impl<W: Write> TraceWriter<W> {
+    pub fn new(writer: W, profile_memory: bool) -> (Self, TraceLayer) {
+        let (trace, layer) = Trace::new(profile_memory);
+        (trace.into_writer(writer), layer)
+    }
+
+    pub async fn receive(&mut self) -> Result<ControlFlow<(), ()>, Error> {
+        let Some(entry) = self.receiver.recv().await else {
+            return Ok(ControlFlow::Break(()));
+        };
+        self.write(entry)?;
+        Ok(ControlFlow::Continue(()))
+    }
+
+    /// Panics if called from an asynchronous context
+    pub fn blocking_receive(&mut self) -> Result<ControlFlow<(), ()>, Error> {
+        let Some(entry) = self.receiver.blocking_recv() else {
+            return Ok(ControlFlow::Break(()));
+        };
+        self.write(entry)?;
+        Ok(ControlFlow::Continue(()))
+    }
+
+    pub fn write(&mut self, entry: Entry) -> Result<(), Error> {
+        Ok(serde_json::ser::to_writer(&mut self.writer, &entry)?)
+    }
+
+    pub fn try_receive(&mut self) -> Result<ControlFlow<(), ()>, Error> {
+        let Ok(entry) = self.receiver.try_recv() else {
+            return Ok(ControlFlow::Break(()));
+        };
+        self.write(entry)?;
+        Ok(ControlFlow::Continue(()))
+    }
+
+    pub fn flush(&mut self) -> Result<(), std::io::Error> {
+        self.writer.flush()
+    }
+}
+
+#[derive(PartialEq, Eq, Hash)]
+enum OpaqueIdentifier {
+    Thread(std::thread::ThreadId),
+    Call(tracing::callsite::Identifier),
+}
+
+impl TraceLayer {
+    fn resource_id(&self, opaque: OpaqueIdentifier) -> Option<ResourceId> {
+        self.callsites.read().unwrap().get(&opaque).copied()
+    }
+
+    fn register_resource_id(&self, opaque: OpaqueIdentifier) -> ResourceId {
+        let mut map = self.callsites.write().unwrap();
+        let len = map.len();
+        *map.entry(opaque).or_insert(ResourceId(len))
+    }
+
+    fn elapsed(&self) -> std::time::Duration {
+        self.start_time.elapsed()
+    }
+
+    fn memory_stats(&self) -> Option<MemoryStats> {
+        if self.profile_memory {
+            MemoryStats::fetch()
+        } else {
+            None
+        }
+    }
+
+    fn send(&self, entry: Entry) {
+        // we never care that the other end hanged on us
+        let _ = self.sender.send(entry);
+    }
+
+    fn register_callsite(&self, metadata: &'static Metadata<'static>) -> ResourceId {
+        let call_id = self.register_resource_id(OpaqueIdentifier::Call(metadata.callsite()));
+
+        let module_path = metadata.module_path();
+        let file = metadata.file();
+        let line = metadata.line();
+        let name = metadata.name();
+        let target = metadata.target();
+
+        self.send(Entry::NewCallsite(NewCallsite {
+            call_id,
+            module_path: module_path.map(Cow::Borrowed),
+            file: file.map(Cow::Borrowed),
+            line,
+            name: Cow::Borrowed(name),
+            target: Cow::Borrowed(target),
+        }));
+        call_id
+    }
+
+    fn register_thread(&self) -> ResourceId {
+        let thread_id = std::thread::current().id();
+        let name = std::thread::current().name().map(ToOwned::to_owned);
+        let thread_id = self.register_resource_id(OpaqueIdentifier::Thread(thread_id));
+        self.send(Entry::NewThread(NewThread { thread_id, name }));
+        thread_id
+    }
+}
+
+impl<S> Layer<S> for TraceLayer
+where
+    S: Subscriber,
+{
+    fn on_new_span(&self, attrs: &Attributes<'_>, id: &TracingId, _ctx: Context<'_, S>) {
+        let call_id = self
+            .resource_id(OpaqueIdentifier::Call(attrs.metadata().callsite()))
+            .unwrap_or_else(|| self.register_callsite(attrs.metadata()));
+
+        let thread_id = self
+            .resource_id(OpaqueIdentifier::Thread(std::thread::current().id()))
+            .unwrap_or_else(|| self.register_thread());
+
+        let parent_id = attrs
+            .parent()
+            .cloned()
+            .or_else(|| tracing::Span::current().id())
+            .map(|id| SpanId::from(&id));
+
+        self.send(Entry::NewSpan(NewSpan { id: id.into(), call_id, parent_id, thread_id }));
+    }
+
+    fn on_enter(&self, id: &TracingId, _ctx: Context<'_, S>) {
+        self.send(Entry::SpanEnter(SpanEnter {
+            id: id.into(),
+            time: self.elapsed(),
+            memory: self.memory_stats(),
+        }))
+    }
+
+    fn on_exit(&self, id: &TracingId, _ctx: Context<'_, S>) {
+        self.send(Entry::SpanExit(SpanExit {
+            id: id.into(),
+            time: self.elapsed(),
+            memory: self.memory_stats(),
+        }))
+    }
+
+    fn on_event(&self, event: &tracing::Event<'_>, _ctx: Context<'_, S>) {
+        let call_id = self
+            .resource_id(OpaqueIdentifier::Call(event.metadata().callsite()))
+            .unwrap_or_else(|| self.register_callsite(event.metadata()));
+
+        let thread_id = self
+            .resource_id(OpaqueIdentifier::Thread(std::thread::current().id()))
+            .unwrap_or_else(|| self.register_thread());
+
+        let parent_id = event
+            .parent()
+            .cloned()
+            .or_else(|| tracing::Span::current().id())
+            .map(|id| SpanId::from(&id));
+
+        self.send(Entry::Event(Event {
+            call_id,
+            thread_id,
+            parent_id,
+            time: self.elapsed(),
+            memory: self.memory_stats(),
+        }))
+    }
+
+    fn on_close(&self, id: TracingId, _ctx: Context<'_, S>) {
+        self.send(Entry::SpanClose(SpanClose { id: Into::into(&id), time: self.elapsed() }))
+    }
+}

tracing-trace/src/lib.rs

@@ -0,0 +1,54 @@
+use std::io::{Read, Write};
+
+use entry::Entry;
+
+pub mod entry;
+mod error;
+pub mod layer;
+pub mod processor;
+
+pub use error::Error;
+
+pub struct TraceWriter<W: Write> {
+    writer: W,
+    receiver: tokio::sync::mpsc::UnboundedReceiver<Entry>,
+}
+
+pub struct Trace {
+    receiver: tokio::sync::mpsc::UnboundedReceiver<Entry>,
+}
+
+impl Trace {
+    pub fn into_receiver(self) -> tokio::sync::mpsc::UnboundedReceiver<Entry> {
+        self.receiver
+    }
+
+    pub fn into_writer<W: Write>(self, writer: W) -> TraceWriter<W> {
+        TraceWriter { writer, receiver: self.receiver }
+    }
+}
+
+pub struct TraceReader<R: Read> {
+    reader: R,
+}
+
+impl<R: Read> TraceReader<R> {
+    pub fn new(reader: R) -> Self {
+        Self { reader }
+    }
+
+    fn read(&mut self) -> Option<Result<Entry, Error>> {
+        serde_json::Deserializer::from_reader(&mut self.reader)
+            .into_iter()
+            .next()
+            .map(|res| res.map_err(Into::into))
+    }
+}
+
+impl<R: Read> Iterator for TraceReader<R> {
+    type Item = Result<Entry, Error>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.read()
+    }
+}

tracing-trace/src/main.rs

@@ -0,0 +1,122 @@
+use tracing::{instrument, Span};
+use tracing_error::{ErrorLayer, InstrumentResult, SpanTrace, TracedError};
+
+#[instrument(level = "trace", target = "profile::indexing")]
+fn foo() -> Result<(), TracedError<Error>> {
+    let _ = bar(40, 2);
+    bar(40, 2)
+}
+
+#[derive(Debug)]
+pub enum Error {
+    XTooBig,
+}
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str("x too big")
+    }
+}
+
+impl std::error::Error for Error {}
+
+#[instrument(level = "trace", target = "profile::indexing")]
+fn bar(x: u32, y: u32) -> Result<(), TracedError<Error>> {
+    let handle_ok = spawn_in_current_scope(move || baz(y));
+    let handle = spawn_in_current_scope(move || baz(x + y));
+    handle_ok.join().unwrap().and(handle.join().unwrap())
+}
+
+pub fn spawn_in_current_scope<F, T>(f: F) -> std::thread::JoinHandle<T>
+where
+    F: FnOnce() -> T + Send + 'static,
+    T: Send + 'static,
+{
+    let current = Span::current();
+    std::thread::spawn(move || {
+        let span = tracing::trace_span!(parent: &current, "thread_spawn", id = ?std::thread::current().id(), name = tracing::field::Empty);
+        if let Some(name) = std::thread::current().name() {
+            span.record("name", name);
+        }
+        span.in_scope(f)
+    })
+}
+
+#[instrument(level = "trace", target = "profile::indexing")]
+fn baz(x: u32) -> Result<(), TracedError<Error>> {
+    if x > 10 {
+        fibo_recursive(10);
+        return Err(Error::XTooBig).in_current_span();
+    }
+    Ok(())
+}
+
+#[instrument(level = "trace", target = "profile::indexing")]
+fn fibo_recursive(n: u32) -> u32 {
+    if n == 0 {
+        return 1;
+    }
+    if n == 1 {
+        return 2;
+    }
+    return fibo_recursive(n - 1) - fibo_recursive(n - 2);
+}
+
+use tracing_error::ExtractSpanTrace as _;
+use tracing_subscriber::layer::SubscriberExt as _;
+use tracing_trace::processor;
+
+fn on_panic(info: &std::panic::PanicInfo) {
+    let info = info.to_string();
+    let trace = SpanTrace::capture();
+    tracing::error!(%info, %trace);
+}
+
+fn main() {
+    let (mut trace, profiling_layer) =
+        tracing_trace::TraceWriter::new(std::fs::File::create("trace.json").unwrap(), true);
+
+    let subscriber = tracing_subscriber::registry()
+        // any number of other subscriber layers may be added before or
+        // after the `ErrorLayer`...
+        .with(ErrorLayer::default())
+        .with(profiling_layer);
+
+    // set the subscriber as the default for the application
+    tracing::subscriber::set_global_default(subscriber).unwrap();
+
+    std::panic::set_hook(Box::new(on_panic));
+
+    let res = foo();
+
+    if let Err(error) = res {
+        print_extracted_spantraces(&error)
+    }
+
+    while trace.try_receive().unwrap().is_continue() {}
+
+    trace.flush().unwrap();
+
+    let trace = tracing_trace::TraceReader::new(std::fs::File::open("trace.json").unwrap());
+
+    let profile = processor::firefox_profiler::to_firefox_profile(trace, "test").unwrap();
+    serde_json::to_writer(std::fs::File::create("processed.json").unwrap(), &profile).unwrap();
+}
+
+fn print_extracted_spantraces(error: &(dyn std::error::Error + 'static)) {
+    let mut error = Some(error);
+    let mut ind = 0;
+
+    eprintln!("Error:");
+
+    while let Some(err) = error {
+        if let Some(spantrace) = err.span_trace() {
+            eprintln!("found a spantrace:\n{}", color_spantrace::colorize(spantrace));
+        } else {
+            eprintln!("{:>4}: {}", ind, err);
+        }
+
+        error = err.source();
+        ind += 1;
+    }
+}

tracing-trace/src/processor/firefox_profiler.rs

@@ -0,0 +1,450 @@
+use std::collections::HashMap;
+
+use fxprof_processed_profile::{
+    CategoryPairHandle, CounterHandle, CpuDelta, Frame, FrameFlags, FrameInfo, MarkerDynamicField,
+    MarkerFieldFormat, MarkerLocation, MarkerSchema, MarkerSchemaField, ProcessHandle, Profile,
+    ProfilerMarker, ReferenceTimestamp, SamplingInterval, StringHandle, Timestamp,
+};
+use serde_json::json;
+
+use crate::entry::{
+    Entry, Event, MemoryStats, NewCallsite, NewSpan, ResourceId, SpanClose, SpanEnter, SpanExit,
+    SpanId,
+};
+use crate::{Error, TraceReader};
+
+pub fn to_firefox_profile<R: std::io::Read>(
+    trace: TraceReader<R>,
+    app: &str,
+) -> Result<Profile, Error> {
+    let mut profile = Profile::new(
+        app,
+        ReferenceTimestamp::from_millis_since_unix_epoch(0.0),
+        SamplingInterval::from_nanos(15),
+    );
+
+    let mut last_timestamp = Timestamp::from_nanos_since_reference(0);
+    let main = profile.add_process(app, 0, last_timestamp);
+
+    let mut calls = HashMap::new();
+    let mut threads = HashMap::new();
+    let mut spans = HashMap::new();
+
+    let category = profile.add_category("general", fxprof_processed_profile::CategoryColor::Blue);
+    let subcategory = profile.add_subcategory(category, "subcategory");
+
+    let mut last_memory = MemoryStats::default();
+
+    let mut memory_counters = None;
+
+    for entry in trace {
+        let entry = entry?;
+        match entry {
+            Entry::NewCallsite(callsite) => {
+                let string_handle = profile.intern_string(callsite.name.as_ref());
+                calls.insert(callsite.call_id, (callsite, string_handle));
+            }
+            Entry::NewThread(thread) => {
+                let thread_handle = profile.add_thread(
+                    main,
+                    thread.thread_id.to_usize() as u32,
+                    last_timestamp,
+                    threads.is_empty(),
+                );
+                if let Some(name) = &thread.name {
+                    profile.set_thread_name(thread_handle, name)
+                }
+                threads.insert(thread.thread_id, thread_handle);
+            }
+            Entry::NewSpan(span) => {
+                spans.insert(span.id, (span, SpanStatus::Outside));
+            }
+            Entry::SpanEnter(SpanEnter { id, time, memory }) => {
+                let (_span, status) = spans.get_mut(&id).unwrap();
+
+                let SpanStatus::Outside = status else {
+                    continue;
+                };
+
+                *status = SpanStatus::Inside { time, memory };
+
+                last_timestamp = Timestamp::from_nanos_since_reference(time.as_nanos() as u64);
+
+                add_memory_samples(
+                    &mut profile,
+                    main,
+                    memory,
+                    last_timestamp,
+                    &mut memory_counters,
+                    &mut last_memory,
+                );
+            }
+            Entry::SpanExit(SpanExit { id, time, memory }) => {
+                let (span, status) = spans.get_mut(&id).unwrap();
+
+                let SpanStatus::Inside { time: begin, memory: begin_memory } = status else {
+                    continue;
+                };
+                last_timestamp = Timestamp::from_nanos_since_reference(time.as_nanos() as u64);
+
+                let begin = *begin;
+                let begin_memory = *begin_memory;
+
+                *status = SpanStatus::Outside;
+
+                let span = *span;
+                let thread_handle = threads.get(&span.thread_id).unwrap();
+
+                let frames = make_frames(span, &spans, &calls, subcategory);
+
+                profile.add_sample(
+                    *thread_handle,
+                    to_timestamp(begin),
+                    frames.iter().rev().cloned(),
+                    CpuDelta::ZERO,
+                    1,
+                );
+                profile.add_sample(
+                    *thread_handle,
+                    to_timestamp(time),
+                    frames.iter().rev().cloned(),
+                    CpuDelta::from_nanos((time - begin).as_nanos() as u64),
+                    1,
+                );
+
+                add_memory_samples(
+                    &mut profile,
+                    main,
+                    memory,
+                    last_timestamp,
+                    &mut memory_counters,
+                    &mut last_memory,
+                );
+
+                let (callsite, _) = calls.get(&span.call_id).unwrap();
+
+                let memory_delta =
+                    begin_memory.zip(memory).and_then(|(begin, end)| end.checked_sub(begin));
+                let marker = SpanMarker { callsite, span: &span, memory_delta };
+
+                profile.add_marker_with_stack(
+                    *thread_handle,
+                    &callsite.name,
+                    marker,
+                    fxprof_processed_profile::MarkerTiming::Interval(
+                        to_timestamp(begin),
+                        to_timestamp(time),
+                    ),
+                    frames.iter().rev().cloned(),
+                )
+            }
+            Entry::Event(event) => {
+                let span = event
+                    .parent_id
+                    .as_ref()
+                    .and_then(|parent_id| spans.get(parent_id))
+                    .and_then(|(span, status)| match status {
+                        SpanStatus::Outside => None,
+                        SpanStatus::Inside { .. } => Some(span),
+                    })
+                    .copied();
+                let timestamp = to_timestamp(event.time);
+
+                let thread_handle = threads.get(&event.thread_id).unwrap();
+
+                let frames = span
+                    .map(|span| make_frames(span, &spans, &calls, subcategory))
+                    .unwrap_or_default();
+
+                profile.add_sample(
+                    *thread_handle,
+                    timestamp,
+                    frames.iter().rev().cloned(),
+                    CpuDelta::ZERO,
+                    1,
+                );
+
+                let memory_delta = add_memory_samples(
+                    &mut profile,
+                    main,
+                    event.memory,
+                    last_timestamp,
+                    &mut memory_counters,
+                    &mut last_memory,
+                );
+
+                let (callsite, _) = calls.get(&event.call_id).unwrap();
+
+                let marker = EventMarker { callsite, event: &event, memory_delta };
+
+                profile.add_marker_with_stack(
+                    *thread_handle,
+                    &callsite.name,
+                    marker,
+                    fxprof_processed_profile::MarkerTiming::Instant(timestamp),
+                    frames.iter().rev().cloned(),
+                );
+
+                last_timestamp = timestamp;
+            }
+            Entry::SpanClose(SpanClose { id, time }) => {
+                spans.remove(&id);
+                last_timestamp = to_timestamp(time);
+            }
+        }
+    }
+
+    Ok(profile)
+}
+
+struct MemoryCounterHandles {
+    usage: CounterHandle,
+}
+
+impl MemoryCounterHandles {
+    fn new(profile: &mut Profile, main: ProcessHandle) -> Self {
+        let usage =
+            profile.add_counter(main, "mimmalloc", "Memory", "Amount of memory currently in use");
+        Self { usage }
+    }
+}
+
+fn add_memory_samples(
+    profile: &mut Profile,
+    main: ProcessHandle,
+    memory: Option<MemoryStats>,
+    last_timestamp: Timestamp,
+    memory_counters: &mut Option<MemoryCounterHandles>,
+    last_memory: &mut MemoryStats,
+) -> Option<MemoryStats> {
+    let Some(stats) = memory else {
+        return None;
+    };
+
+    let memory_counters =
+        memory_counters.get_or_insert_with(|| MemoryCounterHandles::new(profile, main));
+
+    profile.add_counter_sample(
+        memory_counters.usage,
+        last_timestamp,
+        stats.resident as f64 - last_memory.resident as f64,
+        0,
+    );
+
+    let delta = stats.checked_sub(*last_memory);
+    *last_memory = stats;
+    delta
+}
+
+fn to_timestamp(time: std::time::Duration) -> Timestamp {
+    Timestamp::from_nanos_since_reference(time.as_nanos() as u64)
+}
+
+fn make_frames(
+    span: NewSpan,
+    spans: &HashMap<SpanId, (NewSpan, SpanStatus)>,
+    calls: &HashMap<ResourceId, (NewCallsite, StringHandle)>,
+    subcategory: CategoryPairHandle,
+) -> Vec<FrameInfo> {
+    let mut frames = Vec::new();
+    let mut current_span = span;
+    loop {
+        let frame = make_frame(current_span, calls, subcategory);
+        frames.push(frame);
+        if let Some(parent) = current_span.parent_id {
+            current_span = spans.get(&parent).unwrap().0;
+        } else {
+            break;
+        }
+    }
+    frames
+}
+
+fn make_frame(
+    span: NewSpan,
+    calls: &HashMap<ResourceId, (NewCallsite, StringHandle)>,
+    subcategory: CategoryPairHandle,
+) -> FrameInfo {
+    let (_, call) = calls.get(&span.call_id).unwrap();
+    FrameInfo { frame: Frame::Label(*call), category_pair: subcategory, flags: FrameFlags::empty() }
+}
+
+#[derive(Debug, Clone, Copy)]
+enum SpanStatus {
+    Outside,
+    Inside { time: std::time::Duration, memory: Option<MemoryStats> },
+}
+
+struct SpanMarker<'a> {
+    span: &'a NewSpan,
+    callsite: &'a NewCallsite,
+    memory_delta: Option<MemoryStats>,
+}
+
+impl<'a> ProfilerMarker for SpanMarker<'a> {
+    const MARKER_TYPE_NAME: &'static str = "span";
+
+    fn schema() -> MarkerSchema {
+        let fields = vec![
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "filename",
+                label: "File name",
+                format: MarkerFieldFormat::FilePath,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "line",
+                label: "Line",
+                format: MarkerFieldFormat::Integer,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "module_path",
+                label: "Module path",
+                format: MarkerFieldFormat::String,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "span_id",
+                label: "Span ID",
+                format: MarkerFieldFormat::Integer,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "thread_id",
+                label: "Thread ID",
+                format: MarkerFieldFormat::Integer,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "resident",
+                label: "Resident set size, measured in bytes while this function was executing",
+                format: MarkerFieldFormat::Bytes,
+                searchable: false,
+            }),
+        ];
+
+        MarkerSchema {
+            type_name: Self::MARKER_TYPE_NAME,
+            locations: vec![
+                MarkerLocation::MarkerTable,
+                MarkerLocation::MarkerChart,
+                MarkerLocation::TimelineOverview,
+            ],
+            chart_label: None,
+            tooltip_label: Some("{marker.name} - {marker.data.filename}:{marker.data.line}"),
+            table_label: Some("{marker.data.filename}:{marker.data.line}"),
+            fields,
+        }
+    }
+
+    fn json_marker_data(&self) -> serde_json::Value {
+        let filename = self.callsite.file.as_deref();
+        let line = self.callsite.line;
+        let module_path = self.callsite.module_path.as_deref();
+        let span_id = self.span.id;
+        let thread_id = self.span.thread_id;
+
+        let mut value = json!({
+            "type": Self::MARKER_TYPE_NAME,
+            "filename": filename,
+            "line": line,
+            "module_path": module_path,
+            "span_id": span_id,
+            "thread_id": thread_id,
+        });
+
+        if let Some(MemoryStats { resident }) = self.memory_delta {
+            value["resident"] = json!(resident);
+        }
+
+        value
+    }
+}
+
+struct EventMarker<'a> {
+    event: &'a Event,
+    callsite: &'a NewCallsite,
+    memory_delta: Option<MemoryStats>,
+}
+
+impl<'a> ProfilerMarker for EventMarker<'a> {
+    const MARKER_TYPE_NAME: &'static str = "tracing-event";
+
+    fn schema() -> MarkerSchema {
+        let fields = vec![
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "filename",
+                label: "File name",
+                format: MarkerFieldFormat::FilePath,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "line",
+                label: "Line",
+                format: MarkerFieldFormat::Integer,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "module_path",
+                label: "Module path",
+                format: MarkerFieldFormat::String,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "parent_span_id",
+                label: "Parent Span ID",
+                format: MarkerFieldFormat::Integer,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "thread_id",
+                label: "Thread ID",
+                format: MarkerFieldFormat::Integer,
+                searchable: true,
+            }),
+            MarkerSchemaField::Dynamic(MarkerDynamicField {
+                key: "resident",
+                label: "Resident set size, measured in bytes while this function was executing",
+                format: MarkerFieldFormat::Bytes,
+                searchable: false,
+            }),
+        ];
+
+        MarkerSchema {
+            type_name: Self::MARKER_TYPE_NAME,
+            locations: vec![
+                MarkerLocation::MarkerTable,
+                MarkerLocation::MarkerChart,
+                MarkerLocation::TimelineOverview,
+            ],
+            chart_label: None,
+            tooltip_label: Some("{marker.name} - {marker.data.filename}:{marker.data.line}"),
+            table_label: Some("{marker.data.filename}:{marker.data.line}"),
+            fields,
+        }
+    }
+
+    fn json_marker_data(&self) -> serde_json::Value {
+        let filename = self.callsite.file.as_deref();
+        let line = self.callsite.line;
+        let module_path = self.callsite.module_path.as_deref();
+        let span_id = self.event.parent_id;
+        let thread_id = self.event.thread_id;
+
+        let mut value = json!({
+            "type": Self::MARKER_TYPE_NAME,
+            "filename": filename,
+            "line": line,
+            "module_path": module_path,
+            "parent_span_id": span_id,
+            "thread_id": thread_id,
+        });
+
+        if let Some(MemoryStats { resident }) = self.memory_delta {
+            value["resident"] = json!(resident);
+        }
+
+        value
+    }
+}