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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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data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon author-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="author icon"><path d="M649.6 633.6c86.4-48 147.2-144 147.2-249.6 0-160-128-288-288-288s-288 128-288 288c0 108.8 57.6 201.6 147.2 249.6-121.6 48-214.4 153.6-240 288-3.2 9.6 0 19.2 6.4 25.6 3.2 9.6 12.8 12.8 22.4 12.8h704c9.6 0 19.2-3.2 25.6-12.8 6.4-6.4 9.6-16 6.4-25.6-25.6-134.4-121.6-240-243.2-288z"></path></svg><span><a class="page-author-item" href="https://sfkm.me" target="_blank" rel="noopener noreferrer">SnowyKami</a></span><span property="author" content="SnowyKami"></span></span><!----><span class="page-date-info" aria-label="Writing Date📅" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 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xmlns="http://www.w3.org/2000/svg" class="icon category-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="category icon"><path d="M148.41 106.992h282.176c22.263 0 40.31 18.048 40.31 40.31V429.48c0 22.263-18.047 40.31-40.31 40.31H148.41c-22.263 0-40.311-18.047-40.311-40.31V147.302c0-22.263 18.048-40.31 40.311-40.31zM147.556 553.478H429.73c22.263 0 40.311 18.048 40.311 40.31v282.176c0 22.263-18.048 40.312-40.31 40.312H147.555c-22.263 0-40.311-18.049-40.311-40.312V593.79c0-22.263 18.048-40.311 40.31-40.311zM593.927 106.992h282.176c22.263 0 40.31 18.048 40.31 40.31V429.48c0 22.263-18.047 40.31-40.31 40.31H593.927c-22.263 0-40.311-18.047-40.311-40.31V147.302c0-22.263 18.048-40.31 40.31-40.31zM730.22 920.502H623.926c-40.925 0-74.22-33.388-74.22-74.425V623.992c0-41.038 33.387-74.424 74.425-74.424h222.085c41.038 0 74.424 33.226 74.424 74.067v114.233c0 10.244-8.304 18.548-18.547 18.548s-18.548-8.304-18.548-18.548V623.635c0-20.388-16.746-36.974-37.33-36.974H624.13c-20.585 0-37.331 16.747-37.331 37.33v222.086c0 20.585 16.654 37.331 37.126 37.331H730.22c10.243 0 18.547 8.304 18.547 18.547 0 10.244-8.304 18.547-18.547 18.547z"></path></svg><!--[--><span class="page-category-item category6" role>development</span><!--]--><meta property="articleSection" content="development"></span><!----></div><hr></div><div class="vp-toc-placeholder"><aside id="toc"><!--[--><!----><!--]--><div class="vp-toc-header">On This Page<button type="button" class="print-button" title="Print"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-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>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 line-numbers-mode" data-ext="py" data-title="py"><pre class="language-python"><code><span class="token keyword">import</span> asyncio
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<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
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<span class="token keyword">from</span> liteyuki <span class="token keyword">import</span> get_bot
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|
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<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>
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channel_passive <span class="token operator">=</span> get_channel<span class="token punctuation">(</span><span class="token string">"nonebot-passive"</span><span class="token punctuation">)</span> <span class="token comment"># 获取被动通道</span>
|
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channel_active <span class="token operator">=</span> get_channel<span class="token punctuation">(</span><span class="token string">"nonebot-active"</span><span class="token punctuation">)</span> <span class="token comment"># 获取主动通道</span>
|
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liteyuki_bot <span class="token operator">=</span> get_bot<span class="token punctuation">(</span><span class="token punctuation">)</span>
|
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|
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|
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<span class="token comment"># 注册一个函数在轻雪启动后运行</span>
|
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<span class="token decorator annotation punctuation">@liteyuki_bot<span class="token punctuation">.</span>on_after_start</span>
|
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<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>
|
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<span class="token keyword">while</span> <span class="token boolean">True</span><span class="token punctuation">:</span>
|
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channel_passive<span class="token punctuation">.</span>send<span class="token punctuation">(</span><span class="token string">"I am liteyuki main process passive"</span><span class="token punctuation">)</span>
|
||
channel_active<span class="token punctuation">.</span>send<span class="token punctuation">(</span><span class="token string">"I am liteyuki main process active"</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"Passive receive: </span><span class="token interpolation"><span class="token punctuation">{</span>data<span class="token punctuation">}</span></span><span class="token string">"</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"Active receive: </span><span class="token interpolation"><span class="token punctuation">{</span>data<span class="token punctuation">}</span></span><span class="token string">"</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">"key"</span><span class="token punctuation">,</span> <span class="token string">"value"</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">"key"</span><span class="token punctuation">)</span> <span class="token comment"># 获取共享内存</span>
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</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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