🔀 Merge pull request #45

add pre and post processors

docs/api/typing.md

@@ -110,7 +110,7 @@ sidebarDepth: 0
 
 
 
-## `PreProcessor`
+## `EventPreProcessor`
 
 
 * **类型**
@@ -121,7 +121,55 @@ sidebarDepth: 0
 
 * **说明**
 
-    消息预处理函数 PreProcessor 类型
+    事件预处理函数 EventPreProcessor 类型
+
+
+
+
+## `EventPostProcessor`
+
+
+* **类型**
+
+    `Callable[[Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]`
+
+
+
+* **说明**
+
+    事件预处理函数 EventPostProcessor 类型
+
+
+
+
+## `RunPreProcessor`
+
+
+* **类型**
+
+    `Callable[[Matcher, Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]`
+
+
+
+* **说明**
+
+    事件响应器运行前预处理函数 RunPreProcessor 类型
+
+
+
+
+## `RunPostProcessor`
+
+
+* **类型**
+
+    `Callable[[Matcher, List[Any], Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]`
+
+
+
+* **说明**
+
+    事件响应器运行前预处理函数 RunPostProcessor 类型，第二个参数包含运行时产生的错误以及 `ExpiredException`, `StopPropagation` (如果存在)
 
 
 

nonebot/message.py

@@ -5,19 +5,37 @@ from nonebot.log import logger
 from nonebot.rule import TrieRule
 from nonebot.utils import escape_tag
 from nonebot.matcher import matchers
-from nonebot.typing import Set, Type, Union, NoReturn
-from nonebot.typing import Bot, Event, Matcher, PreProcessor
 from nonebot.exception import IgnoredException, ExpiredException
 from nonebot.exception import StopPropagation, _ExceptionContainer
+from nonebot.typing import Set, Type, Union, NoReturn, Bot, Event, Matcher
+from nonebot.typing import EventPreProcessor, RunPreProcessor, EventPostProcessor, RunPostProcessor
 
-_event_preprocessors: Set[PreProcessor] = set()
+_event_preprocessors: Set[EventPreProcessor] = set()
+_event_postprocessors: Set[EventPostProcessor] = set()
+_run_preprocessors: Set[RunPreProcessor] = set()
+_run_postprocessors: Set[RunPostProcessor] = set()
 
 
-def event_preprocessor(func: PreProcessor) -> PreProcessor:
+def event_preprocessor(func: EventPreProcessor) -> EventPreProcessor:
     _event_preprocessors.add(func)
     return func
 
 
+def event_postprocessor(func: EventPostProcessor) -> EventPostProcessor:
+    _event_postprocessors.add(func)
+    return func
+
+
+def run_preprocessor(func: RunPreProcessor) -> RunPreProcessor:
+    _run_preprocessors.add(func)
+    return func
+
+
+def run_postprocessor(func: RunPostProcessor) -> RunPostProcessor:
+    _run_postprocessors.add(func)
+    return func
+
+
 async def _run_matcher(Matcher: Type[Matcher], bot: Bot, event: Event,
                        state: dict) -> Union[None, NoReturn]:
     if Matcher.expire_time and datetime.now() > Matcher.expire_time:
@@ -35,7 +53,24 @@ async def _run_matcher(Matcher: Type[Matcher], bot: Bot, event: Event,
     logger.info(f"Event will be handled by {Matcher}")
 
     matcher = Matcher()
-    # TODO: BeforeMatcherRun
+
+    coros = list(
+        map(lambda x: x(matcher, bot, event, state), _run_preprocessors))
+    if coros:
+        try:
+            await asyncio.gather(*coros)
+        except IgnoredException:
+            logger.opt(colors=True).info(
+                f"Matcher {matcher} running is <b>cancelled</b>")
+            return
+        except Exception as e:
+            logger.opt(colors=True, exception=e).error(
+                "<r><bg #f8bbd0>Error when running RunPreProcessors. "
+                "Running cancelled!</bg #f8bbd0></r>")
+            return
+
+    exceptions = []
+
     try:
         logger.debug(f"Running matcher {matcher}")
         await matcher.run(bot, event, state)
@@ -43,12 +78,24 @@ async def _run_matcher(Matcher: Type[Matcher], bot: Bot, event: Event,
         logger.opt(colors=True, exception=e).error(
             f"<r><bg #f8bbd0>Running matcher {matcher} failed.</bg #f8bbd0></r>"
         )
+        exceptions.append(e)
 
-    exceptions = []
     if Matcher.temp:
         exceptions.append(ExpiredException)
     if Matcher.block:
         exceptions.append(StopPropagation)
+
+    coros = list(
+        map(lambda x: x(matcher, exceptions, bot, event, state),
+            _run_postprocessors))
+    if coros:
+        try:
+            await asyncio.gather(*coros)
+        except Exception as e:
+            logger.opt(colors=True, exception=e).error(
+                "<r><bg #f8bbd0>Error when running RunPostProcessors</bg #f8bbd0></r>"
+            )
+
     if exceptions:
         raise _ExceptionContainer(exceptions)
 
@@ -77,10 +124,8 @@ async def handle_event(bot: Bot, event: Event):
     if show_log:
         logger.opt(colors=True).info(log_msg)
 
-    coros = []
     state = {}
-    for preprocessor in _event_preprocessors:
+    coros = list(map(lambda x: x(bot, event, state), _event_preprocessors))
-        coros.append(preprocessor(bot, event, state))
     if coros:
         try:
             logger.debug("Running PreProcessors...")
@@ -89,6 +134,11 @@ async def handle_event(bot: Bot, event: Event):
             logger.opt(
                 colors=True).info(f"Event {event.name} is <b>ignored</b>")
             return
+        except Exception as e:
+            logger.opt(colors=True, exception=e).error(
+                "<r><bg #f8bbd0>Error when running EventPreProcessors. "
+                "Event ignored!</bg #f8bbd0></r>")
+            return
 
     # Trie Match
     _, _ = TrieRule.get_value(bot, event, state)
@@ -121,3 +171,13 @@ async def handle_event(bot: Bot, event: Event):
                     )
                     del matchers[priority][index - i]
                     i += 1
+
+    coros = list(map(lambda x: x(bot, event, state), _event_postprocessors))
+    if coros:
+        try:
+            logger.debug("Running PostProcessors...")
+            await asyncio.gather(*coros)
+        except Exception as e:
+            logger.opt(colors=True, exception=e).error(
+                "<r><bg #f8bbd0>Error when running EventPostProcessors</bg #f8bbd0></r>"
+            )

nonebot/typing.py

@@ -92,14 +92,41 @@ MessageSegment = TypeVar("MessageSegment", bound="BaseMessageSegment")
   所有 MessageSegment 的基类。
 """
 
-PreProcessor = Callable[[Bot, Event, dict], Union[Awaitable[None],
+EventPreProcessor = Callable[[Bot, Event, dict], Union[Awaitable[None],
                                                        Awaitable[NoReturn]]]
 """
 :类型: ``Callable[[Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]``
 
 :说明:
 
-  消息预处理函数 PreProcessor 类型
+  事件预处理函数 EventPreProcessor 类型
+"""
+EventPostProcessor = Callable[[Bot, Event, dict], Union[Awaitable[None],
+                                                        Awaitable[NoReturn]]]
+"""
+:类型: ``Callable[[Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]``
+
+:说明:
+
+  事件预处理函数 EventPostProcessor 类型
+"""
+RunPreProcessor = Callable[["Matcher", Bot, Event, dict],
+                           Union[Awaitable[None], Awaitable[NoReturn]]]
+"""
+:类型: ``Callable[[Matcher, Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]``
+
+:说明:
+
+  事件响应器运行前预处理函数 RunPreProcessor 类型
+"""
+RunPostProcessor = Callable[["Matcher", List[Any], Bot, Event, dict],
+                            Union[Awaitable[None], Awaitable[NoReturn]]]
+"""
+:类型: ``Callable[[Matcher, List[Any], Bot, Event, dict], Union[Awaitable[None], Awaitable[NoReturn]]]``
+
+:说明:
+
+  事件响应器运行前预处理函数 RunPostProcessor 类型，第二个参数包含运行时产生的错误以及 ``ExpiredException``, ``StopPropagation`` (如果存在)
 """
 
 Matcher = TypeVar("Matcher", bound="MatcherClass")

poetry.lock

@@ -73,15 +73,15 @@ reference = "aliyun"
 
 [[package]]
 name = "attrs"
-version = "20.2.0"
+version = "20.3.0"
 description = "Classes Without Boilerplate"
 category = "main"
 optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [package.extras]
-dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "sphinx-rtd-theme", "pre-commit"]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"]
-docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
+docs = ["furo", "sphinx", "zope.interface"]
 tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
 tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
 
@@ -630,7 +630,7 @@ reference = "aliyun"
 
 [[package]]
 name = "nb-cli"
-version = "0.1.0"
+version = "0.2.0"
 description = "CLI for nonebot2"
 category = "main"
 optional = true
@@ -641,7 +641,7 @@ click = ">=7.1.2,<8.0.0"
 colorama = ">=0.4.3,<0.5.0"
 cookiecutter = ">=1.7.2,<2.0.0"
 docker-compose = ">=1.27.2,<2.0.0"
-nonebot2 = ">=2.0.0-alpha.1,<3.0.0"
+nonebot2 = ">=2.0.0-alpha.4,<3.0.0"
 pyfiglet = ">=0.8.post1,<0.9"
 pyinquirer = "1.0.3"
 
@@ -1515,7 +1515,7 @@ test = ["nonebot-test"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "70521f44e1004cf7bc3863c5d249e18d31ff526bf4420f38cd1f81ae2cf561fb"
+content-hash = "3760d7d6c8119c6fa29e171cabbecc5e705d2bb3faff82f7211a19e27925abfe"
 
 [metadata.files]
 aiofiles = [
@@ -1535,8 +1535,8 @@ arrow = [
     {file = "arrow-0.17.0.tar.gz", hash = "sha256:ff08d10cda1d36c68657d6ad20d74fbea493d980f8b2d45344e00d6ed2bf6ed4"},
 ]
 attrs = [
-    {file = "attrs-20.2.0-py2.py3-none-any.whl", hash = "sha256:fce7fc47dfc976152e82d53ff92fa0407700c21acd20886a13777a0d20e655dc"},
+    {file = "attrs-20.3.0-py2.py3-none-any.whl", hash = "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6"},
-    {file = "attrs-20.2.0.tar.gz", hash = "sha256:26b54ddbbb9ee1d34d5d3668dd37d6cf74990ab23c828c2888dccdceee395594"},
+    {file = "attrs-20.3.0.tar.gz", hash = "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"},
 ]
 babel = [
     {file = "Babel-2.8.0-py2.py3-none-any.whl", hash = "sha256:d670ea0b10f8b723672d3a6abeb87b565b244da220d76b4dba1b66269ec152d4"},
@@ -1761,8 +1761,8 @@ markupsafe = [
     {file = "MarkupSafe-1.1.1.tar.gz", hash = "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b"},
 ]
 nb-cli = [
-    {file = "nb-cli-0.1.0.tar.gz", hash = "sha256:5106212dd0bae270fc547a59f8c75e20951b9fbd87af263d647f8474677a2e26"},
+    {file = "nb-cli-0.2.0.tar.gz", hash = "sha256:d53ab571beee259af99a8cb4574ef85b6c1d821549f857eb45c83b3cb4f903a4"},
-    {file = "nb_cli-0.1.0-py3-none-any.whl", hash = "sha256:a5b5f72bd68b48da446d56623e16b08a3483c84840b3a191771cd9b3e6fde8e9"},
+    {file = "nb_cli-0.2.0-py3-none-any.whl", hash = "sha256:c0975f18bb19da99278ea60c48b668fc6e5fa371b118e8e86d42e989933186ba"},
 ]
 nonebot-test = [
     {file = "nonebot-test-0.1.0.tar.gz", hash = "sha256:f83bc095927f55e55cfe61c2ccc388e2536980d6d40412879009a16484487af4"},