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href="/tags/Lowest-Common-Ancestor-of-a-Binary-Tree/" rel="tag">Lowest Common Ancestor of a Binary Tree</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/MQ/" rel="tag">MQ</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Mac/" rel="tag">Mac</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Maven/" rel="tag">Maven</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Mybatis/" rel="tag">Mybatis</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Mysql/" rel="tag">Mysql</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/NameServer/" rel="tag">NameServer</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/PHP/" rel="tag">PHP</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Preorder-Traversal/" rel="tag">Preorder Traversal</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/RPC/" rel="tag">RPC</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Redis/" rel="tag">Redis</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/RocketMQ/" rel="tag">RocketMQ</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Rotate-Image/" rel="tag">Rotate Image</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Rust/" rel="tag">Rust</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/SPI/" rel="tag">SPI</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Servlet/" rel="tag">Servlet</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Singleton/" rel="tag">Singleton</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Spring/" rel="tag">Spring</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/SpringBoot/" rel="tag">SpringBoot</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Sql%E6%B3%A8%E5%85%A5/" rel="tag">Sql注入</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Stream/" rel="tag">Stream</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Synchronized/" rel="tag">Synchronized</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Thread-dump/" rel="tag">Thread dump</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/ThreadLocal/" rel="tag">ThreadLocal</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/ThreadPool/" rel="tag">ThreadPool</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Tomcat/" rel="tag">Tomcat</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Trapping-Rain-Water/" rel="tag">Trapping Rain Water</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/WeakReference/" rel="tag">WeakReference</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Web/" rel="tag">Web</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Webhook/" rel="tag">Webhook</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/aqs/" rel="tag">aqs</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/await/" rel="tag">await</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/bloom-filter/" rel="tag">bloom filter</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/c/" rel="tag">c++</a><span class="tag-list-count">14</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/cgroup/" rel="tag">cgroup</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/cluster/" rel="tag">cluster</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/condition/" rel="tag">condition</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/docker/" rel="tag">docker</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/dp/" rel="tag">dp</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/echo/" rel="tag">echo</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/environment/" rel="tag">environment</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gap-lock/" rel="tag">gap lock</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gc/" rel="tag">gc</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/grep/" rel="tag">grep</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/hadoop/" rel="tag">hadoop</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/icu4c/" rel="tag">icu4c</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/im/" rel="tag">im</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/is-not-null/" rel="tag">is not null</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/is-null/" rel="tag">is null</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/j-u-c/" rel="tag">j.u.c</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/java/" rel="tag">java</a><span class="tag-list-count">16</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/jvm/" rel="tag">jvm</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/leetcode/" rel="tag">leetcode</a><span class="tag-list-count">25</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/leetcode-155/" rel="tag">leetcode 155</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/linked-list/" rel="tag">linked list</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/linux/" rel="tag">linux</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/lock/" rel="tag">lock</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mfc/" rel="tag">mfc</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/min-stack/" rel="tag">min stack</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mq/" rel="tag">mq</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mvcc/" rel="tag">mvcc</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mysql/" rel="tag">mysql</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/namespace/" rel="tag">namespace</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/next-key-lock/" rel="tag">next-key lock</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nginx/" rel="tag">nginx</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nullsfirst/" rel="tag">nullsfirst</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/openresty/" rel="tag">openresty</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/php/" rel="tag">php</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/procedure/" rel="tag">procedure</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/python/" rel="tag">python</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/read-view/" rel="tag">read view</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/redis/" rel="tag">redis</a><span class="tag-list-count">8</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/signal/" rel="tag">signal</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/sort/" rel="tag">sort</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/spark/" rel="tag">spark</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/stack/" rel="tag">stack</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/string/" rel="tag">string</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/swoole/" rel="tag">swoole</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/top/" rel="tag">top</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/uname/" rel="tag">uname</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/unlock/" rel="tag">unlock</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/value/" rel="tag">value</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/websocket/" rel="tag">websocket</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/zsh/" rel="tag">zsh</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%89%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/" rel="tag">三阶段提交</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%8D%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/" rel="tag">不可变引用</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%A4%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/" rel="tag">两阶段提交</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%AD%E5%B1%B1%E8%B7%AF/" rel="tag">中山路</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%AD%E5%BA%8F/" rel="tag">中序</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%AD%E9%97%B4%E4%BB%B6/" rel="tag">中间件</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BA%8C%E5%8F%89%E6%A0%91/" rel="tag">二叉树</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BA%92%E6%96%A5%E9%94%81/" rel="tag">互斥锁</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BB%A3%E7%A0%81%E9%A2%98%E8%A7%A3/" rel="tag">代码题解</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BF%AE%E7%94%B5%E8%84%91%E7%9A%84/" rel="tag">修电脑的</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%81%8F%E5%90%91%E9%94%81/" rel="tag">偏向锁</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%81%A5%E5%BA%B7%E7%A0%81/" rel="tag">健康码</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%85%AC%E4%BA%A4/" rel="tag">公交</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%85%AC%E4%BA%A4%E8%BD%A6/" rel="tag">公交车</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%86%85%E5%AD%98%E5%88%86%E5%B8%83/" rel="tag">内存分布</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%86%85%E5%AD%98%E6%B3%84%E6%BC%8F/" rel="tag">内存泄漏</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%87%86%E5%A4%87/" rel="tag">准备</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%87%8F%E8%82%A5/" rel="tag">减肥</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E4%BA%8B%E5%8A%A1/" rel="tag">分布式事务</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81/" rel="tag">分布式锁</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%87%E7%89%87/" rel="tag">切片</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%9D%E5%A7%8B%E5%8C%96/" rel="tag">初始化</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%89%8A%E5%B3%B0%E5%A1%AB%E8%B0%B7/" rel="tag">削峰填谷</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%89%8D%E5%BA%8F/" rel="tag">前序</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8A%A0%E5%A1%9E/" rel="tag">加塞</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8A%A0%E8%BD%BD/" rel="tag">加载</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8D%95%E4%BE%8B/" rel="tag">单例</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8D%9A%E5%AE%A2%EF%BC%8C%E6%96%87%E7%AB%A0/" rel="tag">博客，文章</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8E%A6%E9%97%A8/" rel="tag">厦门</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%8C%E4%BA%B2%E5%A7%94%E6%B4%BE/" rel="tag">双亲委派</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%91%E8%A1%8C%E7%89%88/" rel="tag">发行版</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%A3%E7%BD%A9/" rel="tag">口罩</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/" rel="tag">可变引用</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%90%90%E6%A7%BD/" rel="tag">吐槽</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6/" rel="tag">垃圾回收</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%9F%BA%E7%A1%80%E8%AE%BE%E6%96%BD/" rel="tag">基础设施</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AE%89%E5%85%A8/" rel="tag">安全</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AE%B9%E9%94%99%E6%9C%BA%E5%88%B6/" rel="tag">容错机制</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AF%84%E7%94%9F%E8%99%AB/" rel="tag">寄生虫</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B0%8F%E6%8A%80%E5%B7%A7/" rel="tag">小技巧</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B1%80%E5%8F%A3%E8%A1%97/" rel="tag">局口街</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B8%83%E9%9A%86%E8%BF%87%E6%BB%A4%E5%99%A8/" rel="tag">布隆过滤器</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B2%E6%B4%BB/" rel="tag">干活</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B4%E4%B8%AD%E6%80%BB%E7%BB%93/" rel="tag">年中总结</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/" rel="tag">年终总结</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B6%E5%8F%91/" rel="tag">并发</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B8%E7%A6%8F%E4%BA%86%E5%90%97/" rel="tag">幸福了吗</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%BB%E8%AF%BB/" rel="tag">幻读</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BC%80%E8%BD%A6/" rel="tag">开车</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BC%B1%E5%BC%95%E7%94%A8/" rel="tag">弱引用</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BD%B1%E8%AF%84/" rel="tag">影评</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%89%80%E6%9C%89%E6%9D%83/" rel="tag">所有权</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%89%93%E5%8D%A1/" rel="tag">打卡</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%89%B6%E6%A2%AF/" rel="tag">扶梯</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" 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</header>
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<div class="post-body" itemprop="articleBody">
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<p>broker 的启动形式有点类似于 NameServer，都是服务类型的，跟 Consumer 差别比较大，</p>
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<p>首先是org.apache.rocketmq.broker.BrokerStartup中的 main 函数，org.apache.rocketmq.broker.BrokerStartup#createBrokerController基本就是读取参数，这里差点把最核心的初始化给漏了，</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">final</span> <span class="token class-name">BrokerController</span> controller <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerController</span><span class="token punctuation">(</span>
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brokerConfig<span class="token punctuation">,</span>
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nettyServerConfig<span class="token punctuation">,</span>
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nettyClientConfig<span class="token punctuation">,</span>
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messageStoreConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// remember all configs to prevent discard</span>
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controller<span class="token punctuation">.</span><span class="token function">getConfiguration</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">registerConfig</span><span class="token punctuation">(</span>properties<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">boolean</span> initResult <span class="token operator">=</span> controller<span class="token punctuation">.</span><span class="token function">initialize</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>前面是以 broker 配置，netty 的服务端和客户端配置，以及消息存储配置在实例化 BrokerController，然后就是初始化了</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">initialize</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">CloneNotSupportedException</span> <span class="token punctuation">{</span>
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<span class="token keyword">boolean</span> result <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>topicConfigManager<span class="token punctuation">.</span><span class="token function">load</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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result <span class="token operator">=</span> result <span class="token operator">&&</span> <span class="token keyword">this</span><span class="token punctuation">.</span>consumerOffsetManager<span class="token punctuation">.</span><span class="token function">load</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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result <span class="token operator">=</span> result <span class="token operator">&&</span> <span class="token keyword">this</span><span class="token punctuation">.</span>subscriptionGroupManager<span class="token punctuation">.</span><span class="token function">load</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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result <span class="token operator">=</span> result <span class="token operator">&&</span> <span class="token keyword">this</span><span class="token punctuation">.</span>consumerFilterManager<span class="token punctuation">.</span><span class="token function">load</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>前面这些就是各个配置的 load 了，然后是个我认为比较重要的部分messageStore 的实例化，</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">if</span> <span class="token punctuation">(</span>result<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore <span class="token operator">=</span>
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<span class="token keyword">new</span> <span class="token class-name">DefaultMessageStore</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>messageStoreConfig<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>brokerStatsManager<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageArrivingListener<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">DLedgerRoleChangeHandler</span> roleChangeHandler <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">DLedgerRoleChangeHandler</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token class-name">DefaultMessageStore</span><span class="token punctuation">)</span> messageStore<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">DLedgerCommitLog</span><span class="token punctuation">)</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">DefaultMessageStore</span><span class="token punctuation">)</span> messageStore<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getdLedgerServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getdLedgerLeaderElector</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">addRoleChangeHandler</span><span class="token punctuation">(</span>roleChangeHandler<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerStats <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerStats</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">DefaultMessageStore</span><span class="token punctuation">)</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">//load plugin</span>
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<span class="token class-name">MessageStorePluginContext</span> context <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">MessageStorePluginContext</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">,</span> brokerStatsManager<span class="token punctuation">,</span> messageArrivingListener<span class="token punctuation">,</span> brokerConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore <span class="token operator">=</span> <span class="token class-name">MessageStoreFactory</span><span class="token punctuation">.</span><span class="token function">build</span><span class="token punctuation">(</span>context<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">.</span><span class="token function">getDispatcherList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">addFirst</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">CommitLogDispatcherCalcBitMap</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>consumerFilterManager<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IOException</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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result <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"Failed to initialize"</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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result <span class="token operator">=</span> result <span class="token operator">&&</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">.</span><span class="token function">load</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>先是实例化，实例化构造函数里的代码比较重要，重点看一下</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token class-name">DefaultMessageStore</span><span class="token punctuation">(</span><span class="token keyword">final</span> <span class="token class-name">MessageStoreConfig</span> messageStoreConfig<span class="token punctuation">,</span> <span class="token keyword">final</span> <span class="token class-name">BrokerStatsManager</span> brokerStatsManager<span class="token punctuation">,</span>
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<span class="token keyword">final</span> <span class="token class-name">MessageArrivingListener</span> messageArrivingListener<span class="token punctuation">,</span> <span class="token keyword">final</span> <span class="token class-name">BrokerConfig</span> brokerConfig<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">IOException</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageArrivingListener <span class="token operator">=</span> messageArrivingListener<span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig <span class="token operator">=</span> brokerConfig<span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStoreConfig <span class="token operator">=</span> messageStoreConfig<span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerStatsManager <span class="token operator">=</span> brokerStatsManager<span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>allocateMappedFileService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">AllocateMappedFileService</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>commitLog <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">DLedgerCommitLog</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>commitLog <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">CommitLog</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>consumeQueueTable <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ConcurrentHashMap</span><span class="token generics"><span class="token punctuation"><</span><span class="token punctuation">></span></span><span class="token punctuation">(</span><span class="token number">32</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>flushConsumeQueueService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">FlushConsumeQueueService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>cleanCommitLogService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">CleanCommitLogService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>cleanConsumeQueueService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">CleanConsumeQueueService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>storeStatsService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">StoreStatsService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>indexService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">IndexService</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>haService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">HAService</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>haService <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>reputMessageService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ReputMessageService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduleMessageService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ScheduleMessageService</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>transientStorePool <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">TransientStorePool</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isTransientStorePoolEnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>transientStorePool<span class="token punctuation">.</span><span class="token function">init</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>allocateMappedFileService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>indexService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>dispatcherList <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">LinkedList</span><span class="token generics"><span class="token punctuation"><</span><span class="token punctuation">></span></span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>dispatcherList<span class="token punctuation">.</span><span class="token function">addLast</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">CommitLogDispatcherBuildConsumeQueue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>dispatcherList<span class="token punctuation">.</span><span class="token function">addLast</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">CommitLogDispatcherBuildIndex</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">File</span> file <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">File</span><span class="token punctuation">(</span><span class="token class-name">StorePathConfigHelper</span><span class="token punctuation">.</span><span class="token function">getLockFile</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getStorePathRootDir</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">MappedFile</span><span class="token punctuation">.</span><span class="token function">ensureDirOK</span><span class="token punctuation">(</span>file<span class="token punctuation">.</span><span class="token function">getParent</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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lockFile <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">RandomAccessFile</span><span class="token punctuation">(</span>file<span class="token punctuation">,</span> <span class="token string">"rw"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>这里面有很多类，不过先把从构造函数里传进来的忽略下，接下来就是 <code>AllocateMappedFileService</code> 这个service，前面看过文章的可能会根据上面的代码猜到，这也是个 ServiceThread，如果是对RocketMQ 有所了解的可能从名字可以看出这个类是关于 RocketMQ 消息怎么落盘的，当需要创建MappedFile时（在MapedFileQueue.getLastMapedFile方法中），向该线程的requestQueue队列中放入AllocateRequest请求对象，该线程会在后台监听该队列，并在后台创建MapedFile对象，即同时创建了物理文件。然后是创建了 IndexService 服务线程，用来给创建索引；还有是FlushConsumeQueueService是将ConsumeQueue 刷入磁盘；CleanCommitLogService用来清理过期的 CommitLog，默认是 72 小时以上；CleanConsumeQueueService是将小于最新的 CommitLog 偏移量的 ConsumeQueue 清理掉；StoreStatsService是储存统计服务；HAService用于CommitLog 的主备同步；ScheduleMessageService用于定时消息；还有就是这个ReputMessageService非常重要，就是由它实现了将 CommitLog 以 topic+queue 纬度构建 ConsumeQueue，后面TransientStorePool是异步刷盘时的存储buffer，也可以从后面的判断中看出来</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">isTransientStorePoolEnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> transientStorePoolEnable <span class="token operator">&&</span> <span class="token class-name">FlushDiskType</span><span class="token punctuation">.</span>ASYNC_FLUSH <span class="token operator">==</span> <span class="token function">getFlushDiskType</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
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<span class="token operator">&&</span> <span class="token class-name">BrokerRole</span><span class="token punctuation">.</span>SLAVE <span class="token operator">!=</span> <span class="token function">getBrokerRole</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>
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<p>再然后就是启动两个服务线程，dispatcherList是为CommitLog文件转发请求，差不多这个初始化就这些内容。</p>
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<p>然后回到外层，下面是主备切换的配置，然后是数据统计，接着是存储插件加载，然后是往转发器链表里再加一个过滤器</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">if</span> <span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">DLedgerRoleChangeHandler</span> roleChangeHandler <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">DLedgerRoleChangeHandler</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token class-name">DefaultMessageStore</span><span class="token punctuation">)</span> messageStore<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">DLedgerCommitLog</span><span class="token punctuation">)</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">DefaultMessageStore</span><span class="token punctuation">)</span> messageStore<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getdLedgerServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getdLedgerLeaderElector</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">addRoleChangeHandler</span><span class="token punctuation">(</span>roleChangeHandler<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerStats <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerStats</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">DefaultMessageStore</span><span class="token punctuation">)</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">//load plugin</span>
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<span class="token class-name">MessageStorePluginContext</span> context <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">MessageStorePluginContext</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">,</span> brokerStatsManager<span class="token punctuation">,</span> messageArrivingListener<span class="token punctuation">,</span> brokerConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore <span class="token operator">=</span> <span class="token class-name">MessageStoreFactory</span><span class="token punctuation">.</span><span class="token function">build</span><span class="token punctuation">(</span>context<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">.</span><span class="token function">getDispatcherList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">addFirst</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">CommitLogDispatcherCalcBitMap</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>consumerFilterManager<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>接下来就是org.apache.rocketmq.store.MessageStore#load的过程了，</p>
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<ol>
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<li>调用ScheduleMessageService.load方法，初始化延迟级别列表。将这些级别（”1s 5s 10s 30s 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 20m 30m 1h 2h”）的延时存入延迟级别delayLevelTable：ConcurrentHashMap<Integer /* level */, Long/* delay timeMillis */>变量中，例如1s的kv值为1:1000,5s的kv值为2:5000，key值依次类推；每个延迟级别即为一个队列。</li>
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</ol>
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<p>2)调用CommitLog.load方法，在此方法中调用MapedFileQueue.load方法，将$HOME /store/commitlog目录下的所有文件加载到MapedFileQueue的List<MapedFile>变量中；</p>
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<p>3)调用DefaultMessageStore.loadConsumeQueue方法加载consumequeue文件数据到DefaultMessageStore.consumeQueueTable集合中。</p>
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<p>初始化StoreCheckPoint对象，加载$HOME/store/checkpoint文件，该文件记录三个字段值，分别是物理队列消息时间戳、逻辑队列消息时间戳、索引队列消息时间戳。</p>
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<p>调用IndexService.load方法加载$HOME/store/index目录下的文件。对该目录下的每个文件初始化一个IndexFile对象。然后调用IndexFile对象的load方法将IndexHeader加载到对象的变量中；再根据检查是否存在abort文件，若有存在abort文件，则表示Broker表示上次是异常退出的，则检查checkpoint的indexMsgTimestamp字段值是否小于IndexHeader的endTimestamp值，indexMsgTimestamp值表示最后刷盘的时间，若小于则表示在最后刷盘之后在该文件中还创建了索引，则要删除该Index文件，否则将该IndexFile对象放入indexFileList:ArrayList<IndexFile>索引文件集合中。</p>
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<p>然后调用org.apache.rocketmq.store.DefaultMessageStore#recover恢复，前面有根据<code>boolean lastExitOK = !this.isTempFileExist();</code>临时文件是否存在来判断上一次是否正常退出，根据这个状态来选择什么恢复策略</p>
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<p>接下去是初始化 Netty 服务端，初始化发送消息线程池（sendMessageExecutor）、拉取消息线程池（pullMessageExecutor）、管理Broker线程池（adminBrokerExecutor）、客户端管理线程池（clientManageExecutor），注册事件处理器，包括发送消息事件处理器（SendMessageProcessor）、拉取消息事件处理器、查询消息事件处理器（QueryMessageProcessor，包括客户端的心跳事件、注销事件、获取消费者列表事件、更新更新和查询消费进度consumerOffset）、客户端管理事件处理器（ClientManageProcessor）、结束事务处理器（EndTransactionProcessor）、默认事件处理器（AdminBrokerProcessor），然后是定时任务</p>
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<p><code>BrokerController.this.getBrokerStats().record();</code> 记录 Broker 状态</p>
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<p><code>BrokerController.this.consumerOffsetManager.persist();</code> 持久化consumerOffset</p>
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<p><code>BrokerController.this.consumerFilterManager.persist();</code>持久化consumerFilter</p>
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<p><code>BrokerController.this.protectBroker();</code> 保护 broker，消费慢，不让继续投递</p>
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<p><code>BrokerController.this.printWaterMark();</code> 打印水位</p>
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<p><code>log.info("dispatch behind commit log {} bytes", BrokerController.this.getMessageStore().dispatchBehindBytes());</code> 检查落后程度</p>
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<p><code>BrokerController.this.brokerOuterAPI.fetchNameServerAddr();</code> 定时获取 nameserver</p>
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<p><code>BrokerController.this.printMasterAndSlaveDiff();</code> 打印主从不一致</p>
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<p>然后是 tsl，初始化事务消息，初始化 RPCHook</p>
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<p>请把害怕打到公屏上🤦♂️，从线程池名字和调用的方法应该可以看出大部分的用途</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">this</span><span class="token punctuation">.</span>remotingServer <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">NettyRemotingServer</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>nettyServerConfig<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>clientHousekeepingService<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">NettyServerConfig</span> fastConfig <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">NettyServerConfig</span><span class="token punctuation">)</span> <span class="token keyword">this</span><span class="token punctuation">.</span>nettyServerConfig<span class="token punctuation">.</span><span class="token function">clone</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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fastConfig<span class="token punctuation">.</span><span class="token function">setListenPort</span><span class="token punctuation">(</span>nettyServerConfig<span class="token punctuation">.</span><span class="token function">getListenPort</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">-</span> <span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>fastRemotingServer <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">NettyRemotingServer</span><span class="token punctuation">(</span>fastConfig<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>clientHousekeepingService<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>sendMessageExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerFixedThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getSendMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getSendMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>sendThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"SendMessageThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>pullMessageExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerFixedThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getPullMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getPullMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>pullThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"PullMessageThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>replyMessageExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerFixedThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getProcessReplyMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getProcessReplyMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>replyThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"ProcessReplyMessageThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>queryMessageExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerFixedThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getQueryMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getQueryMessageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>queryThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"QueryMessageThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>adminBrokerExecutor <span class="token operator">=</span>
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<span class="token class-name">Executors</span><span class="token punctuation">.</span><span class="token function">newFixedThreadPool</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getAdminBrokerThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span>
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<span class="token string">"AdminBrokerThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>clientManageExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getClientManageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getClientManageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>clientManagerThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"ClientManageThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>heartbeatExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerFixedThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getHeartbeatThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getHeartbeatThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>heartbeatThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"HeartbeatThread_"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>endTransactionExecutor <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BrokerFixedThreadPoolExecutor</span><span class="token punctuation">(</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getEndTransactionThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getEndTransactionThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">,</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>endTransactionThreadPoolQueue<span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span><span class="token string">"EndTransactionThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>consumerManageExecutor <span class="token operator">=</span>
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<span class="token class-name">Executors</span><span class="token punctuation">.</span><span class="token function">newFixedThreadPool</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getConsumerManageThreadPoolNums</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">new</span> <span class="token class-name">ThreadFactoryImpl</span><span class="token punctuation">(</span>
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<span class="token string">"ConsumerManageThread_"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">registerProcessor</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">final</span> <span class="token keyword">long</span> initialDelay <span class="token operator">=</span> <span class="token class-name">UtilAll</span><span class="token punctuation">.</span><span class="token function">computeNextMorningTimeMillis</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">-</span> <span class="token class-name">System</span><span class="token punctuation">.</span><span class="token function">currentTimeMillis</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">final</span> <span class="token keyword">long</span> period <span class="token operator">=</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span> <span class="token operator">*</span> <span class="token number">60</span> <span class="token operator">*</span> <span class="token number">24</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getBrokerStats</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token keyword">record</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"schedule record error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> initialDelay<span class="token punctuation">,</span> period<span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span>consumerOffsetManager<span class="token punctuation">.</span><span class="token function">persist</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"schedule persist consumerOffset error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getFlushConsumerOffsetInterval</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span>consumerFilterManager<span class="token punctuation">.</span><span class="token function">persist</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"schedule persist consumer filter error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">protectBroker</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"protectBroker error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MINUTES<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">printWaterMark</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"printWaterMark error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>SECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"dispatch behind commit log {} bytes"</span><span class="token punctuation">,</span> <span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getMessageStore</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">dispatchBehindBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"schedule dispatchBehindBytes error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getNamesrvAddr</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerOuterAPI<span class="token punctuation">.</span><span class="token function">updateNameServerAddressList</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getNamesrvAddr</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"Set user specified name server address: {}"</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getNamesrvAddr</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerConfig<span class="token punctuation">.</span><span class="token function">isFetchNamesrvAddrByAddressServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerOuterAPI<span class="token punctuation">.</span><span class="token function">fetchNameServerAddr</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"ScheduledTask fetchNameServerAddr exception"</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span> <span class="token operator">*</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token class-name">BrokerRole</span><span class="token punctuation">.</span>SLAVE <span class="token operator">==</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getBrokerRole</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getHaMasterAddress</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!=</span> <span class="token keyword">null</span> <span class="token operator">&&</span> <span class="token keyword">this</span><span class="token punctuation">.</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getHaMasterAddress</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">length</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">>=</span> <span class="token number">6</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">.</span><span class="token function">updateHaMasterAddress</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getHaMasterAddress</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>updateMasterHAServerAddrPeriodically <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>updateMasterHAServerAddrPeriodically <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
|
|
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">printMasterAndSlaveDiff</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"schedule printMasterAndSlaveDiff error."</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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|
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">60</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
|
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsMode <span class="token operator">!=</span> <span class="token class-name">TlsMode</span><span class="token punctuation">.</span>DISABLED<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token comment">// Register a listener to reload SslContext</span>
|
|
<span class="token keyword">try</span> <span class="token punctuation">{</span>
|
|
fileWatchService <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">FileWatchService</span><span class="token punctuation">(</span>
|
|
<span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span> <span class="token punctuation">{</span>
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<span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsServerCertPath<span class="token punctuation">,</span>
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<span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsServerKeyPath<span class="token punctuation">,</span>
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<span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsServerTrustCertPath
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<span class="token punctuation">}</span><span class="token punctuation">,</span>
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<span class="token keyword">new</span> <span class="token class-name">FileWatchService<span class="token punctuation">.</span>Listener</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">boolean</span> certChanged<span class="token punctuation">,</span> keyChanged <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">onChanged</span><span class="token punctuation">(</span><span class="token class-name">String</span> path<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>path<span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span><span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsServerTrustCertPath<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"The trust certificate changed, reload the ssl context"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">reloadServerSslContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>path<span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span><span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsServerCertPath<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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certChanged <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>path<span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span><span class="token class-name">TlsSystemConfig</span><span class="token punctuation">.</span>tlsServerKeyPath<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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keyChanged <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>certChanged <span class="token operator">&&</span> keyChanged<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"The certificate and private key changed, reload the ssl context"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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certChanged <span class="token operator">=</span> keyChanged <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
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<span class="token function">reloadServerSslContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">reloadServerSslContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">NettyRemotingServer</span><span class="token punctuation">)</span> remotingServer<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">loadSslContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">NettyRemotingServer</span><span class="token punctuation">)</span> fastRemotingServer<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">loadSslContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">warn</span><span class="token punctuation">(</span><span class="token string">"FileWatchService created error, can't load the certificate dynamically"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token function">initialTransaction</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">initialAcl</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">initialRpcHooks</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">return</span> result<span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>Broker 启动过程</p>
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<p>贴代码</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">Exception</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>messageStore <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>messageStore<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>remotingServer <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>remotingServer<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>fastRemotingServer <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>fastRemotingServer<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>fileWatchService <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>fileWatchService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerOuterAPI <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerOuterAPI<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>pullRequestHoldService <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>pullRequestHoldService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>clientHousekeepingService <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>clientHousekeepingService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>filterServerManager <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>filterServerManager<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token function">startProcessorByHa</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getBrokerRole</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">handleSlaveSynchronize</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getBrokerRole</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">registerBrokerAll</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>scheduledExecutorService<span class="token punctuation">.</span><span class="token function">scheduleAtFixedRate</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Runnable</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">BrokerController</span><span class="token punctuation">.</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">registerBrokerAll</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">,</span> brokerConfig<span class="token punctuation">.</span><span class="token function">isForceRegister</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"registerBrokerAll Exception"</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token operator">*</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token class-name">Math</span><span class="token punctuation">.</span><span class="token function">max</span><span class="token punctuation">(</span><span class="token number">10000</span><span class="token punctuation">,</span> <span class="token class-name">Math</span><span class="token punctuation">.</span><span class="token function">min</span><span class="token punctuation">(</span>brokerConfig<span class="token punctuation">.</span><span class="token function">getRegisterNameServerPeriod</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">60000</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span>MILLISECONDS<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerStatsManager <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerStatsManager<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>brokerFastFailure <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>brokerFastFailure<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
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<p>首先是启动messageStore，调用 start 方法，这里面又调用了一些代码</p>
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<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">Exception</span> <span class="token punctuation">{</span>
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lock <span class="token operator">=</span> lockFile<span class="token punctuation">.</span><span class="token function">getChannel</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">tryLock</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>lock <span class="token operator">==</span> <span class="token keyword">null</span> <span class="token operator">||</span> lock<span class="token punctuation">.</span><span class="token function">isShared</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">||</span> <span class="token operator">!</span>lock<span class="token punctuation">.</span><span class="token function">isValid</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span><span class="token string">"Lock failed,MQ already started"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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lockFile<span class="token punctuation">.</span><span class="token function">getChannel</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span><span class="token class-name">ByteBuffer</span><span class="token punctuation">.</span><span class="token function">wrap</span><span class="token punctuation">(</span><span class="token string">"lock"</span><span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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lockFile<span class="token punctuation">.</span><span class="token function">getChannel</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">force</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">{</span>
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<span class="token comment">/**
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* 1. Make sure the fast-forward messages to be truncated during the recovering according to the max physical offset of the commitlog;
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* 2. DLedger committedPos may be missing, so the maxPhysicalPosInLogicQueue maybe bigger that maxOffset returned by DLedgerCommitLog, just let it go;
|
|
* 3. Calculate the reput offset according to the consume queue;
|
|
* 4. Make sure the fall-behind messages to be dispatched before starting the commitlog, especially when the broker role are automatically changed.
|
|
*/</span>
|
|
<span class="token keyword">long</span> maxPhysicalPosInLogicQueue <span class="token operator">=</span> commitLog<span class="token punctuation">.</span><span class="token function">getMinOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">ConcurrentMap</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">Integer</span><span class="token punctuation">,</span> <span class="token class-name">ConsumeQueue</span><span class="token punctuation">></span></span> maps <span class="token operator">:</span> <span class="token keyword">this</span><span class="token punctuation">.</span>consumeQueueTable<span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">ConsumeQueue</span> logic <span class="token operator">:</span> maps<span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
<span class="token keyword">if</span> <span class="token punctuation">(</span>logic<span class="token punctuation">.</span><span class="token function">getMaxPhysicOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">></span> maxPhysicalPosInLogicQueue<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
maxPhysicalPosInLogicQueue <span class="token operator">=</span> logic<span class="token punctuation">.</span><span class="token function">getMaxPhysicOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span>maxPhysicalPosInLogicQueue <span class="token operator"><</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
maxPhysicalPosInLogicQueue <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span>maxPhysicalPosInLogicQueue <span class="token operator"><</span> <span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">getMinOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
maxPhysicalPosInLogicQueue <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">getMinOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token comment">/**
|
|
* This happens in following conditions:
|
|
* 1. If someone removes all the consumequeue files or the disk get damaged.
|
|
* 2. Launch a new broker, and copy the commitlog from other brokers.
|
|
*
|
|
* All the conditions has the same in common that the maxPhysicalPosInLogicQueue should be 0.
|
|
* If the maxPhysicalPosInLogicQueue is gt 0, there maybe something wrong.
|
|
*/</span>
|
|
log<span class="token punctuation">.</span><span class="token function">warn</span><span class="token punctuation">(</span><span class="token string">"[TooSmallCqOffset] maxPhysicalPosInLogicQueue={} clMinOffset={}"</span><span class="token punctuation">,</span> maxPhysicalPosInLogicQueue<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">getMinOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"[SetReputOffset] maxPhysicalPosInLogicQueue={} clMinOffset={} clMaxOffset={} clConfirmedOffset={}"</span><span class="token punctuation">,</span>
|
|
maxPhysicalPosInLogicQueue<span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">getMinOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">getMaxOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">getConfirmOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>reputMessageService<span class="token punctuation">.</span><span class="token function">setReputFromOffset</span><span class="token punctuation">(</span>maxPhysicalPosInLogicQueue<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>reputMessageService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
|
|
<span class="token comment">/**
|
|
* 1. Finish dispatching the messages fall behind, then to start other services.
|
|
* 2. DLedger committedPos may be missing, so here just require dispatchBehindBytes <= 0
|
|
*/</span>
|
|
<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function">dispatchBehindBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator"><=</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token keyword">break</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token class-name">Thread</span><span class="token punctuation">.</span><span class="token function">sleep</span><span class="token punctuation">(</span><span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"Try to finish doing reput the messages fall behind during the starting, reputOffset={} maxOffset={} behind={}"</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>reputMessageService<span class="token punctuation">.</span><span class="token function">getReputFromOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getMaxPhyOffset</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">dispatchBehindBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">recoverTopicQueueTable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">isEnableDLegerCommitLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>haService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">handleScheduleMessageService</span><span class="token punctuation">(</span>messageStoreConfig<span class="token punctuation">.</span><span class="token function">getBrokerRole</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>flushConsumeQueueService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>commitLog<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>storeStatsService<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">createTempFile</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">addScheduleTask</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token keyword">this</span><span class="token punctuation">.</span>shutdown <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
|
|
|
|
|
|
|
|
<p>调用DefaultMessageStore.start方法启动DefaultMessageStore对象中的一些服务线程。</p>
|
|
<ol>
|
|
<li>启动ReputMessageService服务线程</li>
|
|
<li>启动FlushConsumeQueueService服务线程；</li>
|
|
<li>调用CommitLog.start方法，启动CommitLog对象中的FlushCommitLogService线程服务，若是同步刷盘（SYNC_FLUSH）则是启动GroupCommitService线程服务；若是异步刷盘（ASYNC_FLUSH）则是启动FlushRealTimeService线程服务；</li>
|
|
<li>启动StoreStatsService线程服务；</li>
|
|
<li>启动定时清理任务</li>
|
|
</ol>
|
|
<p>然后是启动ClientHousekeepingService的 netty 服务端和客户端，然后是启动fileWatchService证书服务，接着启动BrokerOuterAPI中的NettyRemotingClient，即建立与NameServer的链接，用于自身Broker与其他模块的RPC功能调用；包括获取NameServer的地址、注册Broker、注销Broker、获取Topic配置、获取消息进度信息、获取订阅关系等RPC功能，然后是PullRequestHoldService服务线程，这个就是实现长轮询的，然后启动管家ClientHousekeepingService服务，负责扫描不活跃的生产者，消费者和 filter，启动FilterServerManager 过滤器服务管理，然后启动定时任务调用org.apache.rocketmq.broker.BrokerController#registerBrokerAll向所有 nameserver 注册 broker，最后是按需开启org.apache.rocketmq.store.stats.BrokerStatsManager和org.apache.rocketmq.broker.latency.BrokerFastFailure，基本上启动过程就完成了</p>
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