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hmily.drawio
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<mxfile host="Electron" modified="2024-05-22T06:51:47.260Z" agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/21.6.5 Chrome/114.0.5735.243 Electron/25.3.1 Safari/537.36" etag="gSk5xuZ3THxorFIbDKeI" version="21.6.5" type="device" pages="2">
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<mxCell id="b_DPwCItqDpnZili3_qI-1" value="<h1 style="font-size: 18px;"><font style="font-size: 18px;">Hmily TCC 模式工作原理流程</font></h1><div style="font-size: 12px;"><div style=""><font style="font-size: 12px;">源码版本：2.1.2</font></div></div><div style="font-size: 12px;">测试DEMO: hmily/hmily-demo/hmily-demo-tcc/hmily-demo-tcc-grpc （源码下载下来调下参数就可以执行，直接在源码中调试吧）</div><div style=""><span style="font-size: 12px;">前置知识：</span><b style="font-size: 12px;">TCC理论</b><span style="font-size: 12px;">、</span><b style="font-size: 12px;">Disruptor、</b><span style="background-color: initial;"><b style=""><font style="font-size: 12px;">LogNet/grpc-spring-boot-starter、JUC&nbsp;</font></b></span><b style="background-color: initial;"><font style="font-size: 12px;">ConcurrentSkipListMap、common-lang3 MethodUtils</font></b></div><div style=""><b style="background-color: initial;"><br></b></div><div style="font-size: 12px;">这是一个 SpringBoot 项目；创建了<b>3个数据库，分别有一张表</b>, 使用Mybatis访问数据表；系统包含3个服务（订单、库存、账户，服务间通过 grpc 通信，订单服务是前台服务），模拟购买商品下单、扣库存、支付扣款流程。</div><div style="font-size: 12px;"><br></div>" style="text;html=1;strokeColor=none;fillColor=none;spacing=5;spacingTop=-20;whiteSpace=wrap;overflow=hidden;rounded=0;fontSize=16;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-2" value="业务事务处理" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-4" value="Hmily事务管理器初始化" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
<mxGeometry x="40" y="160" width="200" height="60" as="geometry" />
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<mxCell id="b_DPwCItqDpnZili3_qI-5" value="orderService.orderPay(count, amount)<br style="font-size: 11px;"><font color="#007fff" style="font-size: 11px;">count 是商品数量，amount是支付金额</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-143" value="<font color="#007fff">切面代理类</font>" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];" parent="b_DPwCItqDpnZili3_qI-88" vertex="1" connectable="0">
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<mxCell id="b_DPwCItqDpnZili3_qI-7" value="Order order = saveOrder(count, amount);" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-9" value="@<b>HmilyTCC</b>(confirmMethod = "confirmOrderStatus", cancelMethod = "cancelOrderStatus")<br>paymentService.<b>makePayment</b>(order);" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#fff2cc;strokeColor=#d6b656;" parent="1" vertex="1">
<mxGeometry x="520" y="800" width="200" height="60" as="geometry" />
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<mxCell id="b_DPwCItqDpnZili3_qI-11" value="<b>orderMapper</b>.<b>save</b>(order);" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;" parent="1" vertex="1">
<mxGeometry x="760" y="560" width="200" height="60" as="geometry" />
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<mxCell id="b_DPwCItqDpnZili3_qI-13" value="OrderServiceImpl" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=11;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-17" value="" style="edgeStyle=orthogonalEdgeStyle;rounded=1;orthogonalLoop=1;jettySize=auto;html=1;" parent="1" source="b_DPwCItqDpnZili3_qI-14" target="b_DPwCItqDpnZili3_qI-16" edge="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-14" value="order.setStatus(orderStatus.getCode());<br><b>orderMapper</b>.<b>update</b>(order);<br><font color="#007fff">订单服务本地修改订单<br></font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-16" value="accountClient.<b>payment</b>(<br>String.valueOf(order.getUserId()), String.valueOf(order.getTotalAmount()<br>.doubleValue()));<br><font color="#007fff">RPC调用扣减账户余额</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-18" value="inventoryClient.<b>decrease</b>(<br>order.getProductId(), order.getCount());<br><font color="#007fff">RPC调用扣减库存，事务的处理和<br>账户服务扣减余额一样，不细讲了<br></font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-36" value="@Transactional(rollbackFor = Exception.class) <font color="#007fff">//</font><div><div>public boolean <b>confirm</b>(AccountDTO accountDTO) {</div><div>&nbsp; &nbsp; accountMapper.<b>confirm</b>(accountDTO);</div><div><span style="background-color: initial;">&nbsp; &nbsp; return Boolean.TRUE;</span></div><div>}</div></div><div><font color="#007fff">确认付款，将freeze_amount（用于回滚）也进行扣减</font></div>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;align=left;fillColor=#fff2cc;strokeColor=#d6b656;arcSize=9;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-39" value="<div>@Transactional(rollbackFor = Exception.class)</div><div>public boolean <b>cancel</b>(AccountDTO accountDTO) {</div><div>&nbsp; &nbsp; final AccountDO accountDO = accountMapper.<b>findByUserId</b>(</div><div><span style="white-space: pre;">	</span>accountDTO.getUserId());</div><div>&nbsp; &nbsp; accountMapper.<b>cancel</b>(accountDTO);</div><div>&nbsp; &nbsp; return Boolean.TRUE;</div><div>}</div><div><font color="#007fff">取消付款，将 balance 加回去，freeze_amount 减掉</font></div>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;align=left;fillColor=#fff2cc;strokeColor=#d6b656;arcSize=10;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-42" value="<font color="#007fff">这一步其实是控制的<b>修改订单</b>操作，<br>后面扣款、扣库存其实管不到</font>" style="text;html=1;align=left;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-54" value="<div><font color="#007fff">insert into `order` (create_time,number,status,product_id,total_amount,count,user_id)&nbsp;</font></div><div><font color="#007fff">" values ( #{createTime},#{number},#{status},#{productId},#{totalAmount},#{count},#{userId})</font></div>" style="text;html=1;align=left;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-55" value="<font color="#007fff">update `order` set status = #{status}&nbsp; where number = #{number}</font>" style="text;html=1;align=left;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-59" value="<b>hmily-spring-boot-starter-grpc<br><font color="#007fff">这个是引入的核心组件</font><br></b>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-61" value="继承：<br><b>hmily-spring-boot-starter<br></b>依赖：<br><b>hmily-spring-boot-starter-parent<br></b>hmily-grpc" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;align=left;" parent="1" vertex="1">
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<mxCell id="b_DPwCItqDpnZili3_qI-70" value="HmilyAutoConfiguration<br><div style=""><font color="#007fff">hmily-spring-boot-starter-parent</font></div><div style=""><font color="#007fff">中的自动配置类</font></div>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;align=center;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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&nbsp; &nbsp; &nbsp; hmilyTransaction.</span>setStatus<span style="font-weight: normal;">(HmilyActionEnum.</span>TRYING<span style="font-weight: normal;">.getCode()); </span><font color="#cc0000">//TRYING 状态</font></div><font style="font-size: 9px;" color="#007fff"><span style=""><span style="white-space: pre;">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>&nbsp;<span style="white-space: pre;">	</span>&nbsp;//3&nbsp;<span style="font-weight: normal;">通过 HmilyRepositoryEventPublish</span></font><font style="font-size: 9px;"><font style="font-size: 9px;" color="#007fff"><span style="font-weight: normal;">er 发布 </span>UPDATE_HMILY_PARTICIPANT_STATUS<span style="font-weight: normal;">、</span><span style="font-weight: normal; white-space: pre;">	</span><br></font><font style="font-weight: normal; font-size: 9px;" color="#007fff">&nbsp;<span style="white-space: pre;">	</span>&nbsp;</font><font style="font-size: 9px;" color="#007fff">UPDATE_HMILY_PARTICIPANT_STATUS</font><font style="font-weight: normal; font-size: 9px;" color="#007fff"> 事件（分别更新事务和发起者的状态）</font></font><div style="font-size: 9px;"><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;this.</span>executor<span style="font-weight: normal;">.</span>updateStartStatus<span style="font-weight: normal;">(hmilyTransaction);</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; } catch (Throwable var11) { <font color="#007fff">//业务抛出异常</font></span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; HmilyTransaction currentTransaction = HmilyTransactionHolder.getInstance()</span></div><div><span style="font-weight: normal;"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>&nbsp; &nbsp; &nbsp; &nbsp; .getCurrentTransaction();</span></div><div><span style="font-weight: normal;"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span></span><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span><font style="background-color: initial; border-color: var(--border-color);" color="#007fff">//4 取消，内部“递归”调用各个参与者 CANCEL 阶段（CANCELING状态）处理</font></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; this.disruptor.getProvider().</span><span style="font-weight: normal;">(() -&gt; {</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.executor.globalCancel(currentTransaction);</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; });</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; throw var11;</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; }</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp;&nbsp;</span><span style="background-color: initial;"><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style="font-weight: 400;"></span></div><div><div style="border-color: var(--border-color);"><font style="border-color: var(--border-color);" color="#007fff">&nbsp; &nbsp; //5 确认提交，内部“递归”调用各个参与者 CONFIRM 阶段（CONFIRMING状态）处理</font></div></div><div><span style="font-weight: normal;">&nbsp; &nbsp; HmilyTransaction currentTransaction = HmilyTransactionHolder.getInstance()</span></div><div><span style="font-weight: normal;"><span style=""><span style="">&nbsp; 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<mxCell id="Jgbx7IJgLmi5tVRdjDKV-12" value="<div><span style="background-color: initial; font-weight: normal;"><font style="" color="#007fff">//创建Hmily事务对象（事务ID、事务类型、事务状态）</font></span></div><div><span style="font-weight: normal; background-color: initial;">HmilyTransaction hmilyTransaction = </span><span style="background-color: initial;">createHmilyTransaction</span><span style="background-color: initial;"><span style="font-weight: normal;">(); </span><font style="" color="#cc0000">//PRE_TRY状态</font></span><br></div><div><span style="background-color: initial;"><font style="" color="#007fff">//1 通过 HmilyRepositoryEventPublisher 发布 CREATE_HMILY_TRANSACTION 事件</font></span></div><div><span style="font-weight: normal;">HmilyRepositoryStorage.</span>createHmilyTransaction<span style="font-weight: normal;">(hmilyTransaction);</span></div><div><span style="font-weight: normal;"><font color="#007fff">//创建事务参与者并注册到事务参与者列表</font></span></div><div><span style="font-weight: normal;">HmilyParticipant hmilyParticipant = </span>buildHmilyParticipant<span style="font-weight: normal;">(point, null, null, <span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>HmilyRoleEnum.START.getCode(), hmilyTransaction.getTransId());</span></div><div><span style="font-weight: normal;">HmilyRepositoryStorage.createHmilyParticipant(hmilyParticipant);</span></div><div><span style="font-weight: normal;">hmilyTransaction.</span>registerParticipant<span style="font-weight: normal;">(hmilyParticipant);</span></div><font color="#007fff">//保存Hmily事务对象到ThreadLocal&lt;HmilyTransaction&gt;</font><div>HmilyTransactionHolder<span style="font-weight: normal;">.getInstance().</span>set<span style="font-weight: normal;">(hmilyTransaction);</span></div><div><span style="font-weight: normal;"><br></span></div><div><span style="color: rgb(0, 127, 255); background-color: initial;">//创建 Hmily 事务上下文保存在HmilyContextHolder 中的 HmilyContext</span><br></div><div><span style="font-weight: normal;">HmilyTransactionContext context = new </span>HmilyTransactionContext<span style="font-weight: normal;">();</span></div><div><span style="font-weight: normal; background-color: initial;">context.setAction(HmilyActionEnum.TRYING.getCode());</span><br></div><div><span style="font-weight: normal;">context.setTransId(hmilyTransaction.getTransId());</span></div><div><span style="font-weight: normal;">context.setRole(HmilyRoleEnum.START.getCode());</span></div><div><span style="font-weight: normal;">context.setTransType(TransTypeEnum.TCC.name());</span></div><div>HmilyContextHolder<span style="font-weight: normal;">.set(context);</span></div><div><span style="font-weight: normal;">return hmilyTransaction;</span></div>" style="whiteSpace=wrap;html=1;fontSize=10;rounded=1;fontStyle=1;align=left;arcSize=2;" parent="1" vertex="1">
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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; super.<b>start</b>(new ForwardingClientCallListener.SimpleForwardingClientCallListener&lt;P&gt;(responseListener) {</div><div style="font-size: 9px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; public void <b>onClose</b>(Status status, Metadata trailers) { <font color="#007fff">//TODO 响应回调？</font></div><div style="font-size: 9px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (status.getCode().value() == Code.OK.value()) { <font color="#007fff">//成功</font></div><div style="font-size: 9px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (context.getRole() == HmilyRoleEnum.PARTICIPANT.getCode()) {</div><div style="font-size: 9px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 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<mxCell id="_u3hFmiMN6U5vcW2F68K-7" value="<div><b><font color="#007fff">这中间同样先经过切面代理处理</font></b></div><div><b><font color="#007fff">HmilyGlobalInterceptor#invoke(final ProceedingJoinPoint pjp)</font></b></div>" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" parent="1" vertex="1">
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<mxCell id="_u3hFmiMN6U5vcW2F68K-11" value="<div><font color="#007fff"><b>Hmily 应用的 6 种角色</b>：</font></div><div><font color="#007fff">START(1, "发起者"),</font></div><div><font color="#007fff">CONSUMER(2, "消费者"),</font></div><div><font color="#007fff">PARTICIPANT(3, "参与者"),</font></div><div><font color="#007fff">LOCAL(4, "本地调用"),</font></div><div><font color="#007fff">INLINE(5, "内嵌RPC调用"),</font></div><div><font color="#007fff">SPRING_CLOUD(6, "SpringCloud");</font></div><div><font color="#007fff"><br></font></div><div><font color="#007fff">TCC模式实际也就只用到 <b>START</b>、<b>PARTICIPANT</b> 两种角色；</font></div>" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;rounded=0;" parent="1" vertex="1">
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<mxCell id="_u3hFmiMN6U5vcW2F68K-12" value="<font color="#007fff" style="font-size: 10px;">这里的角色判定规则：<br style="font-size: 10px;"></font><div style="font-size: 10px;"><span style="background-color: initial; font-size: 10px;"><font color="#007fff" style="font-size: 10px;">事务上下文是由发起者创建的，事务上下文为null， 当前应用一定是发起者（START）；</font></span></div><div style="font-size: 10px;"><font color="#007fff">事务上下文不为空，此事务上下文是传递过来，</font></div><div style="font-size: 10px;"></div><font color="#007fff">如果上下文中角色是 START（发起者调用当前服务）、PARTICIPANT（参与者调用当前服务，即多次嵌套），<br>当前应用一定是参与者（PARTICIPANT）；<br>LOCAL -&gt; LOCAL&nbsp; (LOCAL CONSUMER 貌似TCC也并没有用到，看对应的事务处理器实现都是空的)<br>CONSUMER -&gt; CONSUMER<br><br></font>" style="text;html=1;align=left;verticalAlign=top;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;fontSize=10;" parent="1" vertex="1">
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<mxCell id="_u3hFmiMN6U5vcW2F68K-15" value="<div><span style="font-weight: normal;">HmilyParticipant hmilyParticipant = null;</span></div><div><span style="font-weight: normal;">switch (HmilyActionEnum.acquireByCode(context.getAction())) {</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; case </span>TRYING<span style="font-weight: normal;">:</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; try {</span></div><div><div style=""><font color="#007fff">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //1 事务参与者Try阶段处理</font></div></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hmilyParticipant = executor.</span>preTryParticipant<span style="font-weight: normal;">(context, point);</span></div><div><font color="#007fff"><span style=""><span style=""> &nbsp;&nbsp;&nbsp;&nbsp;</span></span>&nbsp; &nbsp; &nbsp; &nbsp; //2 继续执行参与者业务代码</font><br></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; final Object proceed = point.</span>proceed<span style="font-weight: normal;">();</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hmilyParticipant.</span>setStatus<span style="font-weight: normal;">(HmilyActionEnum.</span>TRYING<span style="font-weight: normal;">.getCode()); </span><font color="#cc0000">//TRYING状态</font></div><font style="font-size: 9px;" color="#007fff"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;//3 通过 HmilyRepositoryEventPublisher 发布UPDATE_HMILY_PARTICIPANT_STATUS&nbsp;事件</font><div style="font-size: 9px;"><span style="font-weight: normal; background-color: initial;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;HmilyRepositoryStorage.</span><span style="background-color: initial;">updateHmilyParticipantStatus</span><span style="font-weight: normal; background-color: initial;">(hmilyParticipant);</span><br></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return proceed;</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; } catch (Throwable throwable) {</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //if exception ,delete log.</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (Objects.nonNull(hmilyParticipant)) {</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; HmilyParticipantCacheManager.getInstance()</span></div><div><span style="font-weight: normal;"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>&nbsp;<span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>.</span>removeByKey<span style="font-weight: normal;">(hmilyParticipant.getParticipantId());</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</span></div><div><font color="#007fff"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span>&nbsp; &nbsp; &nbsp; &nbsp; <font style=""><font size="1">//4 通过 HmilyRepositoryEventPublisher 发布 REMOVE_HMILY_PARTICIPANT&nbsp;事件</font></font><br></font></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; HmilyRepositoryStorage.</span>removeHmilyParticipant<span style="font-weight: normal;">(hmilyParticipant);</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </span>throw throwable<span style="font-weight: normal;">; <font color="#007fff">//如果发生异常，先清理再继续抛异常</font></span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; } finally {</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; HmilyContextHolder.remove();</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; }</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; case </span>CONFIRMING<span style="font-weight: normal;">:</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; MetricsReporter.counterIncrement(LabelNames.TRANSACTION_STATUS, new String[]<br><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span>{TransTypeEnum.TCC.name(), HmilyRoleEnum.PARTICIPANT.name(), <br><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span>HmilyActionEnum.CONFIRMING.name()});</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; List&lt;HmilyParticipant&gt; confirmList = HmilyParticipantCacheManager.getInstance()</span></div><div><span style="font-weight: normal;"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span>.get(context.getParticipantId());</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; return executor.participantConfirm(confirmList, context.getParticipantId());</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; case </span>CANCELING<span style="font-weight: normal;">:</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; MetricsReporter.counterIncrement(LabelNames.TRANSACTION_STATUS, new String[]<br><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span>{TransTypeEnum.TCC.name(), HmilyRoleEnum.PARTICIPANT.name(),&nbsp;</span></div><div><span style="font-weight: normal;"><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span>HmilyActionEnum.CANCELING.name()});</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; List&lt;HmilyParticipant&gt; cancelList = HmilyParticipantCacheManager.getInstance()<br><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span>.get(context.getParticipantId());</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; return executor.participantCancel(cancelList, context.getParticipantId());</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; default:</span></div><div><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; break;</span></div><div><span style="font-weight: normal;">}</span></div><div><span style="font-weight: normal;">Method method = ((MethodSignature) (point.getSignature())).getMethod();</span></div><div><span style="font-weight: normal;">return DefaultValueUtils.getDefaultValue(method.getReturnType());</span></div>" style="whiteSpace=wrap;html=1;fontSize=10;rounded=1;fontStyle=1;align=left;arcSize=2;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="_u3hFmiMN6U5vcW2F68K-21" value="<div><span style="font-weight: normal;"><font style="font-size: 9px;" color="#007fff">//创建Hmily参与者对象（内部包含事务的基本信息和当前参与者事务控制类和方法以及确认和撤销方法）</font></span></div><font color="#cc0000" size="1">//PRE_TRY状态</font><div><span style="font-weight: normal;">final HmilyParticipant hmilyParticipant = </span>buildHmilyParticipant<span style="font-weight: normal;">(point, context.getParticipantId(),&nbsp; <br>&nbsp; &nbsp; context.getParticipantRefId(), HmilyRoleEnum.PARTICIPANT.getCode(), context.getTransId());</span></div><div></div><span style="font-weight: normal;"><font color="#007fff">//缓存 参与者ID -&gt; 参与者对象 到 HmilyParticipantCacheManager</font></span><div><span style="font-weight: normal;">HmilyTransactionHolder.getInstance().</span>cacheHmilyParticipant<span style="font-weight: normal;">(hmilyParticipant);</span></div><div><div><font color="#007fff">//1 通过 HmilyRepositoryEventPublisher 发布 CREATE_HMILY_PARTICIPANT&nbsp;事件</font></div></div><div><span style="font-weight: normal;">HmilyRepositoryStorage.</span>createHmilyParticipant<span style="font-weight: normal;">(hmilyParticipant);</span></div><div><span style="font-weight: normal;">context.setRole(HmilyRoleEnum.PARTICIPANT.getCode());</span></div><div>HmilyContextHolder<span style="font-weight: normal;">.set(context);</span></div><div><span style="font-weight: normal;">return hmilyParticipant;</span></div>" style="whiteSpace=wrap;html=1;fontSize=10;rounded=1;fontStyle=1;align=left;arcSize=5;" parent="1" vertex="1">
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<mxCell id="_u3hFmiMN6U5vcW2F68K-23" value="<p style="margin: 4px 0px 0px; text-align: center;"><b>HmilyParticipant</b><br style="font-size: 11px;"></p><hr style="font-size: 11px;"><p style="margin: 0px 0px 0px 4px; font-size: 11px;"><font style="" color="#007fff"><b>Hmily分布式事务参与者定义，发起者也使用此实例表示</b></font></p><p style="margin: 0px 0px 0px 4px; font-size: 11px;"><font style="" color="#007fff"><b><br></b></font></p><p style="margin: 0px 0px 0px 4px;"><span style="background-color: initial;"><font color="#007fff">//事务参与者应用ID</font></span></p><p style="margin: 0px 0px 0px 4px;"><span style="background-color: initial;">private Long <b>participantId</b>;</span><br></p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">// ？？？</font></p><p style="margin: 0px 0px 0px 4px;">private Long participantRefId;</p><p style="margin: 0px 0px 0px 4px;">private Long <b>transId</b>;</p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">//事务协议类型，比如TCC</font></p><p style="margin: 0px 0px 0px 4px;">private String <b>transType</b>;</p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">//事务状态</font></p><p style="margin: 0px 0px 0px 4px;">private Integer <b>status</b>;</p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">//事务参与者应用名称</font></p><p style="margin: 0px 0px 0px 4px;">private String <b>appName</b>;</p><p style="margin: 0px 0px 0px 4px;">private int <b>role</b>;</p><p style="margin: 0px 0px 0px 4px;">private int retry;</p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">//事务控制的目标类</font></p><p style="margin: 0px 0px 0px 4px;">private String <b>targetClass</b>;</p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">//事务控制的目标方法</font></p><p style="margin: 0px 0px 0px 4px;">private String <b>targetMethod</b>;</p><p style="margin: 0px 0px 0px 4px;">private String <b>confirmMethod</b>;</p><p style="margin: 0px 0px 0px 4px;">private String <b>cancelMethod</b>;</p><p style="margin: 0px 0px 0px 4px;">private Integer version = 1;</p><p style="margin: 0px 0px 0px 4px;">private Date createTime;</p><p style="margin: 0px 0px 0px 4px;">private Date updateTime;</p><p style="margin: 0px 0px 0px 4px;"><font color="#007fff">//用于后面Confirm Cancel阶段 本地调用、RPC调用</font></p><p style="margin: 0px 0px 0px 4px;">private HmilyInvocation <b>confirmHmilyInvocation</b>;</p><p style="margin: 0px 0px 0px 4px;">private HmilyInvocation <b>cancelHmilyInvocation</b>;</p><hr style="font-size: 11px;"><p style="margin: 0px 0px 0px 4px;"><br></p>" style="verticalAlign=top;align=left;overflow=fill;fontSize=11;fontFamily=Helvetica;html=1;whiteSpace=wrap;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
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<mxCell id="_u3hFmiMN6U5vcW2F68K-83" value="<div style=""><font style="font-size: 10px;"><span style="font-weight: normal;">currentTransaction.setStatus(HmilyActionEnum.</span><font style="" color="#cc0000">CONFIRMING</font><span style="font-weight: normal;">.getCode());</span></font></div><font style="font-weight: normal; font-size: 10px;" color="#007fff">//通过 HmilyRepositoryEventPublisher 发布 UPDATE_HMILY_TRANSACTION_STATUS&nbsp;事件</font><div style=""><font style="font-size: 10px;"><span style="font-weight: normal;">HmilyRepositoryStorage.</span>updateHmilyTransactionStatus<span style="font-weight: normal;">(currentTransaction);</span></font></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">final List&lt;HmilyParticipant&gt; hmilyParticipants = currentTransaction.getHmilyParticipants();</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">List&lt;Boolean&gt; successList = new ArrayList&lt;&gt;();</font></span></div><div style=""><font style="font-size: 10px;"><span style="font-weight: normal;">for (HmilyParticipant hmilyParticipant : </span>hmilyParticipants<span style="font-weight: normal;">) { </span><font style="font-size: 10px;" color="#007fff">//通知所有参与者确认提交</font></font></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; try {</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; if (hmilyParticipant.getRole() == HmilyRoleEnum.START.getCode()) {</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;" color="#007fff"><span style="white-space: pre;">	</span>&nbsp; &nbsp; //说明是事务发起者应用自己，本地调用（获取服务实例反射调用）<br></font></span></div><div style=""><font style="font-size: 10px;"><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </span>HmilyReflector<span style="font-weight: normal;">.executor(HmilyActionEnum.CONFIRMING, <br><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp; &nbsp; &nbsp;&nbsp;<span style="white-space: pre;">	</span></span></span>ExecutorTypeEnum.</span>LOCAL<span style="font-weight: normal;">, hmilyParticipant);</span></font></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; HmilyRepositoryStorage.removeHmilyParticipant(hmilyParticipant);</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; } else {</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;"><span style="white-space: pre;">	</span>&nbsp; &nbsp; <font style="font-size: 10px;" color="#007fff">//其他参与者，远程调用（获取服务实例封装后的Stub实例反射调用）</font><br></font></span></div><div style=""><font style="font-size: 10px;"><span style="font-weight: normal;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </span>HmilyReflector<span style="font-weight: normal;">.executor(HmilyActionEnum.CONFIRMING, <br><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;</span></span><span style=""><span style="">&nbsp;&nbsp;&nbsp;&nbsp;<span style="white-space: pre;">	</span></span></span>ExecutorTypeEnum.</span>RPC<span style="font-weight: normal;">, hmilyParticipant);</span></font></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; }</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; successList.add(true);</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; } catch (Throwable e) {</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; successList.add(false);</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; LOGGER.error(...);</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; } finally {</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; &nbsp; &nbsp; HmilyContextHolder.remove();</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">&nbsp; &nbsp; }</font></span></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">}</font></span></div><div style=""><font style="font-size: 10px;"><span style="font-weight: normal;">if (successList.stream().allMatch(e -&gt; e)) { </span><font style="font-size: 10px;" color="#007fff"><span style="font-weight: normal;">//</span>如果有参与者确认提交失败<span style="font-weight: normal;">（确认和撤销会有重试，这里是指重试之后还是失败）</span>，不会删除事务记录，但是也不会继续处理</font></font></div><div style=""><font style="font-size: 10px;"><span style="font-weight: normal; background-color: initial;">&nbsp; &nbsp; HmilyRepositoryStorage.removeHmilyTransaction(currentTransaction);</span><br></font></div><div style=""><span style="font-weight: normal;"><font style="font-size: 10px;">}</font></span></div>" style="whiteSpace=wrap;html=1;fontSize=10;rounded=1;fontStyle=1;align=left;arcSize=2;" parent="1" vertex="1">
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