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<link rel="alternate" hreflang="zh-cn" href="https://vuepress-theme-hope-docs-demo.netlify.app/dev/dev_comm.html"><meta property="og:url" content="https://vuepress-theme-hope-docs-demo.netlify.app/en/dev/dev_comm.html"><meta property="og:site_name" content="LiteyukiBot"><meta property="og:title" content="Communication"><meta property="og:description" content="通道通信 简介 轻雪运行在主进程 MainProcess 里其他插件框架进程是伴随的子进程因此无法通过内存共享和直接对象传递的方式进行通信轻雪提供了一个通道Channel用于跨进程通信你可以通过Channel发送消息给其他进程也可以监听其他进程的消息。 例如子进程接收到用户信息需要重启机器人,这时可以通过通道对主进程发送消息,主进程接收到消息..."><meta property="og:type" content="article"><meta property="og:locale" content="en-US"><meta property="og:locale:alternate" content="zh-CN"><meta property="og:updated_time" content="2024-08-16T18:24:25.000Z"><meta property="article:modified_time" content="2024-08-16T18:24:25.000Z"><script type="application/ld+json">{"@context":"https://schema.org","@type":"Article","headline":"Communication","image":[""],"dateModified":"2024-08-16T18:24:25.000Z","author":[]}</script><script src="/js/en/get_data.js" type="module"></script><script src="/js/style.js" type="module"></script><link rel="icon" href="https://cdn.liteyuki.icu/favicon.ico"><link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/firacode/6.2.0/fira_code.min.css"><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"><title>Communication | LiteyukiBot</title><meta name="description" content="通道通信 简介 轻雪运行在主进程 MainProcess 里其他插件框架进程是伴随的子进程因此无法通过内存共享和直接对象传递的方式进行通信轻雪提供了一个通道Channel用于跨进程通信你可以通过Channel发送消息给其他进程也可以监听其他进程的消息。 例如子进程接收到用户信息需要重启机器人,这时可以通过通道对主进程发送消息,主进程接收到消息...">
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364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#通道通信">通道通信</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#简介">简介</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#示例">示例</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#共享内存通信">共享内存通信</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#简介-1">简介</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#示例-1">示例</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><h2 id="通道通信" tabindex="-1"><a class="header-anchor" href="#通道通信"><span><strong>通道通信</strong></span></a></h2><h3 id="简介" tabindex="-1"><a class="header-anchor" href="#简介"><span>简介</span></a></h3><p>轻雪运行在主进程 MainProcess 里,其他插件框架进程是伴随的子进程,因此无法通过内存共享和直接对象传递的方式进行通信,轻雪提供了一个通道<code>Channel</code>用于跨进程通信,你可以通过<code>Channel</code>发送消息给其他进程,也可以监听其他进程的消息。</p><p>例如子进程接收到用户信息需要重启机器人,这时可以通过通道对主进程发送消息,主进程接收到消息后重启对应子进程。</p><h3 id="示例" tabindex="-1"><a class="header-anchor" href="#示例"><span>示例</span></a></h3><p>通道是全双工的,有两种接收模式,但一个通道只能使用一种,即被动模式和主动模式,被动模式由<code>chan.on_receive()</code>装饰回调函数实现,主动模式需调用<code>chan.receive()</code>实现</p><ul><li>创建子进程的同时会初始化一个被动通道和一个主动通道,且通道标识为<code>{process_name}-active</code><code>{process_name}-passive</code></li><li>主进程中通过<code>get_channel</code>函数获取通道对象</li><li>子进程中导入单例<code>active_channel</code><code>passive_channel</code>即可</li></ul><blockquote><p>在轻雪插件中(主进程中)</p></blockquote><div class="language-python line-numbers-mode" data-ext="py" data-title="py"><pre class="language-python"><code><span class="token keyword">import</span> asyncio
<span class="token keyword">from</span> liteyuki<span class="token punctuation">.</span>comm <span class="token keyword">import</span> get_channel<span class="token punctuation">,</span> Channel
<span class="token keyword">from</span> liteyuki <span class="token keyword">import</span> get_bot
<span class="token comment"># get_channel函数获取通道对象参数为调用set_channel时的通道标识</span>
channel_passive <span class="token operator">=</span> get_channel<span class="token punctuation">(</span><span class="token string">&quot;nonebot-passive&quot;</span><span class="token punctuation">)</span> <span class="token comment"># 获取被动通道</span>
channel_active <span class="token operator">=</span> get_channel<span class="token punctuation">(</span><span class="token string">&quot;nonebot-active&quot;</span><span class="token punctuation">)</span> <span class="token comment"># 获取主动通道</span>
liteyuki_bot <span class="token operator">=</span> get_bot<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token comment"># 注册一个函数在轻雪启动后运行</span>
<span class="token decorator annotation punctuation">@liteyuki_bot<span class="token punctuation">.</span>on_after_start</span>
<span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">send_data</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword">while</span> <span class="token boolean">True</span><span class="token punctuation">:</span>
channel_passive<span class="token punctuation">.</span>send<span class="token punctuation">(</span><span class="token string">&quot;I am liteyuki main process passive&quot;</span><span class="token punctuation">)</span>
channel_active<span class="token punctuation">.</span>send<span class="token punctuation">(</span><span class="token string">&quot;I am liteyuki main process active&quot;</span><span class="token punctuation">)</span>
<span class="token keyword">await</span> asyncio<span class="token punctuation">.</span>sleep<span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token comment"># 每3秒发送一次消息</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><blockquote><p>在子进程中例如NoneBot插件中</p></blockquote><div class="language-python line-numbers-mode" data-ext="py" data-title="py"><pre class="language-python"><code><span class="token keyword">from</span> nonebot <span class="token keyword">import</span> get_driver
<span class="token keyword">from</span> liteyuki<span class="token punctuation">.</span>comm <span class="token keyword">import</span> active_channel<span class="token punctuation">,</span> passive_channel <span class="token comment"># 子进程中获取通道直接导入进程全局单例即可</span>
<span class="token keyword">from</span> liteyuki<span class="token punctuation">.</span>log <span class="token keyword">import</span> logger
driver <span class="token operator">=</span> get_driver<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token comment"># 被动模式,通过装饰器注册一个函数在接收到消息时运行,每次接收到字符串数据时都会运行</span>
<span class="token decorator annotation punctuation">@passive_channel<span class="token punctuation">.</span>on_receive</span><span class="token punctuation">(</span>filter_func<span class="token operator">=</span><span class="token keyword">lambda</span> data<span class="token punctuation">:</span> <span class="token builtin">isinstance</span><span class="token punctuation">(</span>data<span class="token punctuation">,</span> <span class="token builtin">str</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">on_passive_receive</span><span class="token punctuation">(</span>data<span class="token punctuation">)</span><span class="token punctuation">:</span>
logger<span class="token punctuation">.</span>info<span class="token punctuation">(</span><span class="token string-interpolation"><span class="token string">f&quot;Passive receive: </span><span class="token interpolation"><span class="token punctuation">{</span>data<span class="token punctuation">}</span></span><span class="token string">&quot;</span></span><span class="token punctuation">)</span>
<span class="token comment"># 注册一个函数在NoneBot启动后运行</span>
<span class="token decorator annotation punctuation">@driver<span class="token punctuation">.</span>on_startup</span>
<span class="token keyword">def</span> <span class="token function">on_startup</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword">while</span> <span class="token boolean">True</span><span class="token punctuation">:</span>
data <span class="token operator">=</span> active_channel<span class="token punctuation">.</span>receive<span class="token punctuation">(</span><span class="token punctuation">)</span>
logger<span class="token punctuation">.</span>info<span class="token punctuation">(</span><span class="token string-interpolation"><span class="token string">f&quot;Active receive: </span><span class="token interpolation"><span class="token punctuation">{</span>data<span class="token punctuation">}</span></span><span class="token string">&quot;</span></span><span class="token punctuation">)</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><blockquote><p>启动后控制台输出</p></blockquote><div class="language-log line-numbers-mode" data-ext="log" data-title="log"><pre class="language-log"><code><span class="token date number">0000-00-00</span> <span class="token time number">00:00:00</span> <span class="token punctuation">[</span>ℹ️信息<span class="token punctuation">]</span> <span class="token property">Passive receive:</span> I am liteyuki main process passive
<span class="token date number">0000-00-00</span> <span class="token time number">00:00:00</span> <span class="token punctuation">[</span>ℹ️信息<span class="token punctuation">]</span> <span class="token property">Active receive:</span> I am liteyuki main process active
<span class="token date number">0000-00-00</span> <span class="token time number">00:00:03</span> <span class="token punctuation">[</span>ℹ️信息<span class="token punctuation">]</span> <span class="token property">Passive receive:</span> I am liteyuki main process passive
<span class="token date number">0000-00-00</span> <span class="token time number">00:00:03</span> <span class="token punctuation">[</span>ℹ️信息<span class="token punctuation">]</span> <span class="token property">Active receive:</span> I am liteyuki main process active
<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="共享内存通信" tabindex="-1"><a class="header-anchor" href="#共享内存通信"><span><strong>共享内存通信</strong></span></a></h2><h3 id="简介-1" tabindex="-1"><a class="header-anchor" href="#简介-1"><span>简介</span></a></h3><ul><li>相比于普通进程通信,内存共享使得代码编写更加简洁,轻雪框架提供了一个内存共享通信的接口,你可以通过<code>storage</code>模块实现内存共享通信,该模块封装通道实现</li><li>内存共享是线程安全的,你可以在多个线程中读写共享内存,线程锁会自动保护共享内存的读写操作</li></ul><h3 id="示例-1" tabindex="-1"><a class="header-anchor" href="#示例-1"><span>示例</span></a></h3><blockquote><p>在任意进程中均可使用</p></blockquote><div class="language-python line-numbers-mode" data-ext="py" data-title="py"><pre class="language-python"><code><span class="token keyword">from</span> liteyuki<span class="token punctuation">.</span>comm<span class="token punctuation">.</span>storage <span class="token keyword">import</span> shared_memory
shared_memory<span class="token punctuation">.</span><span class="token builtin">set</span><span class="token punctuation">(</span><span class="token string">&quot;key&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;value&quot;</span><span class="token punctuation">)</span> <span class="token comment"># 设置共享内存</span>
value <span class="token operator">=</span> shared_memory<span class="token punctuation">.</span>get<span class="token punctuation">(</span><span class="token string">&quot;key&quot;</span><span class="token punctuation">)</span> <span class="token comment"># 获取共享内存</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>源代码:<a href="https://github.com/LiteyukiStudio/LiteyukiBot/blob/main/liteyuki/comm/storage.py" target="_blank" rel="noopener noreferrer">liteyuki/comm/storage.py<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li></ul></div><!--[--><!----><!--]--><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/LiteyukiStudio/LiteyukiBot/edit/main/docs/en/dev/dev_comm.md" rel="noopener noreferrer" target="_blank" aria-label="在 GitHub 上编辑" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->在 GitHub 上编辑<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="meta-item git-info"><div class="update-time"><span class="label">Last update: </span><!----></div><div class="contributors"><span class="label">Contributors: </span><!--[--><!--[--><span class="contributor" title="email: snowykami@outlook.com">snowy</span><!--]--><!--]--></div></div></footer><nav class="vp-page-nav"><a class="route-link nav-link prev" href="/en/dev/dev_lyplugin.html" aria-label="Liteyuki Plugin"><div class="hint"><span class="arrow start"></span>Prev</div><div class="link"><span class="font-icon icon fa-fw fa-sm fas fa-laptop-code" style=""></span>Liteyuki Plugin</div></a><!----></nav><div id="vp-comment" class="giscus-wrapper input-top" style="display:block;"><svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" preserveAspectRatio="xMidYMid" viewBox="0 0 100 100"><circle cx="28" cy="75" r="11" fill="currentColor"><animate attributeName="fill-opacity" begin="0s" dur="1s" keyTimes="0;0.2;1" repeatCount="indefinite" values="0;1;1"></animate></circle><path fill="none" stroke="#88baf0" stroke-width="10" d="M28 47a28 28 0 0 1 28 28"><animate attributeName="stroke-opacity" begin="0.1s" dur="1s" keyTimes="0;0.2;1" repeatCount="indefinite" values="0;1;1"></animate></path><path fill="none" stroke="#88baf0" stroke-width="10" d="M28 25a50 50 0 0 1 50 50"><animate attributeName="stroke-opacity" begin="0.2s" dur="1s" keyTimes="0;0.2;1" repeatCount="indefinite" values="0;1;1"></animate></path></svg></div><!--[--><!----><!--]--><!--]--></main><!--]--><footer class="vp-footer-wrapper"><div class="vp-footer">LiteyukiBot</div><div class="vp-copyright">Copyright © 2024 SnowyKami </div></footer></div><!--]--><!--[--><!----><!--]--><!--]--></div>
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