import{_ as i,c as a,o as n,al as e}from"./chunks/framework.BUxnStXl.js";const c=JSON.parse('{"title":"Process Communication","description":"","frontmatter":{"title":"Process Communication","order":4},"headers":[],"relativePath":"en/dev/comm.md","filePath":"en/dev/comm.md","lastUpdated":1734116271000}'),t={name:"en/dev/comm.md"};function l(h,s,p,k,r,o){return n(),a("div",null,s[0]||(s[0]=[e(`<h1 id="channel-communication" tabindex="-1"><strong>Channel Communication</strong> <a class="header-anchor" href="#channel-communication" aria-label="Permalink to &quot;**Channel Communication**&quot;">​</a></h1><h3 id="introduction" tabindex="-1">Introduction <a class="header-anchor" href="#introduction" aria-label="Permalink to &quot;Introduction&quot;">​</a></h3><p>LiteyukiBot is running in the main process MainProcess, and other plugin framework processes are child processes that come with it. Therefore, it is impossible to communicate through shared memory and direct object transfer. Liteyuki provides a channel <a href="./api/comm/channel.html#class-channel-generic-t"><code>Channel</code></a> for inter-process communication like <code>go</code>. You can send messages to other processes through <a href="./api/comm/channel.html#class-channel-generic-t"><code>Channel</code></a> and listen to messages from other processes.</p><h3 id="example" tabindex="-1">Example <a class="header-anchor" href="#example" aria-label="Permalink to &quot;Example&quot;">​</a></h3><p>The channel is full-duplex, with two receiving modes, but only one mode can be used for a channel, that is, passive mode and active mode, passive mode is implemented by the <code>chan.on_receive()</code> decorator callback function, and active mode needs to call <code>chan.receive()</code> to implement</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>和<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>及<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 vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">python</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> asyncio</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> liteyuki.comm </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_channel, Channel</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> liteyuki </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_bot</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># get_channel函数获取通道对象，参数为调用set_channel时的通道标识</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">channel_passive </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_channel(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;nonebot-passive&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)  </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 获取被动通道</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">channel_active </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_channel(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;nonebot-active&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)  </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 获取主动通道</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">liteyuki_bot </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_bot()</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 注册一个函数在轻雪启动后运行</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">@liteyuki_bot.on_after_start</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">async</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> def</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> send_data</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">():</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">    while</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> True</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">:</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">        channel_passive.send(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;I am liteyuki main process passive&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">        channel_active.send(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;I am liteyuki main process active&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">        await</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> asyncio.sleep(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">3</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)  </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 每3秒发送一次消息</span></span></code></pre></div><blockquote><p>在子进程中（例如NoneBot插件中）</p></blockquote><div class="language-python vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">python</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> nonebot </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_driver</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> liteyuki.comm </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> active_channel, passive_channel  </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 子进程中获取通道直接导入进程全局单例即可</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> liteyuki.log </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> logger</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">driver </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> get_driver()</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 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>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">@passive_channel.on_receive</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">filter_func</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=lambda</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> data: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">isinstance</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">str</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">))</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">async</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> def</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> on_passive_receive</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(data):</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">    logger.info(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">f</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;Passive receive: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">{</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">data</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">}</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 注册一个函数在NoneBot启动后运行</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">@driver.on_startup</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">def</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> on_startup</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">():</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">    while</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> True</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">:</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">        data </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> active_channel.receive()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">        logger.info(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">f</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;Active receive: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">{</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">data</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">}</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)</span></span></code></pre></div><blockquote><p>启动后控制台输出</p></blockquote><div class="language-log vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">log</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">0000-00-00</span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> 00:00:00</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> [ℹ️信息] Passive receive: I am liteyuki main process passive</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">0000-00-00</span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> 00:00:00</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> [ℹ️信息] Active receive: I am liteyuki main process active</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">0000-00-00</span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> 00:00:03</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> [ℹ️信息] Passive receive: I am liteyuki main process passive</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">0000-00-00</span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> 00:00:03</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> [ℹ️信息] Active receive: I am liteyuki main process active</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">...</span></span></code></pre></div><h2 id="共享内存通信" tabindex="-1"><strong>共享内存通信</strong> <a class="header-anchor" href="#共享内存通信" aria-label="Permalink to &quot;**共享内存通信**&quot;">​</a></h2><h3 id="简介" tabindex="-1">简介 <a class="header-anchor" href="#简介" aria-label="Permalink to &quot;简介&quot;">​</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" tabindex="-1">示例 <a class="header-anchor" href="#示例" aria-label="Permalink to &quot;示例&quot;">​</a></h3><blockquote><p>在任意进程中均可使用</p></blockquote><div class="language-python vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">python</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">from</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> liteyuki.comm.storage </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> shared_memory</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">shared_memory.set(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;key&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;value&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)  </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 设置共享内存</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">value </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> shared_memory.get(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&quot;key&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">)  </span><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"># 获取共享内存</span></span></code></pre></div><p>源代码：<a href="https://github.com/LiteyukiStudio/LiteyukiBot/blob/main/liteyuki/comm/storage.py" target="_blank" rel="noreferrer">liteyuki/comm/storage.py</a></p>`,19)]))}const E=i(t,[["render",l]]);export{c as __pageData,E as default};
