我正在设置spring集成流程,以使用来自MQ的消息,并通过创建从MQ Messages创建的请求来并行调用Web服务调用。
下面是弹簧集成流程的样子
分散聚集通道有两个分配通道,每个分配通道都是由以下部分组成的链
收集来自并行Web服务调用的响应,并将通过两个并行Web服务调用创建的新对象发送到RabbitMQ。
我能够从散布式聚集模式进行并行Web服务调用,但是我看不到聚集模式中发生聚合,基本上流没有进入聚集器类。
我尝试了使用任务执行器作为发布-收集模式的输入通道的Publish-Subscribe通道,并且根据日志,Web服务调用与两个任务执行器并行发生,但是在Web服务调用之后它从未到达收集器。
<si:service-activator input-channel="transformedEntity"
ref="incidentHandler" output-channel="outputChannelFromMQ" />
<si:scatter-gather input-channel="outputChannelFromMQ"
requires-reply="false" output-channel="gatherResponseOutputChannel" gather-channel="gatherChannel" gather-timeout="4000">
<si:scatterer apply-sequence="true">
<si:recipient channel="distributionChannel1" />
<si:recipient channel="distributionChannel2" />
</si:scatterer>
</si:scatter-gather>
<si:publish-subscribe-channel id="outputChannelFromMQ" apply-sequence="true"
task-executor="taskExecutor" />
<task:executor id="taskExecutor" queue-capacity="25" pool-size="10-10" />
<si:chain id="planngedBagsChain" input-channel="distributionChannel1"
output-channel="gatherChannel">
<si:service-activator ref="webServiceClient1" method="getResponse" />
<si:service-activator ref="serviceHandler1" method="saveToDB" />
</si:chain>
<si:chain id="bagHistoryChain" input-channel="distributionChannel2"
output-channel="gatherChannel">
<si:service-activator ref="webServiceClient2" method="getResponse" />
<si:transformer ref="transformer" />
<si:service-activator ref="serviceHandler2" method="saveToDB" />
</si:chain>
<si:service-activator input-channel="gatherResponseOutputChannel"
ref="responseTransformer" method="receiveResponse" output-channel="toRabbitMQ" />
答案 0 :(得分:0)
启用调试日志后,便能够找出将其发送到的所有通道。通过上述配置,它不会正确地收集到。更改为以下配置即可。
<si:service-activator input-channel="transformedEntity"
ref="incidentHandler" output-channel="outputChannelFromMQ" />
<si:channel id="outputChannelFromMQ"></si:channel>
<si:scatter-gather input-channel="outputChannelFromMQ"
requires-reply="false" scatter-channel="scatterInputChannel" output-channel="toRabbit"
gather-channel="gatherChannel" gather-timeout="4000">
<si:gatherer id="responseGatherer" ref="responseTransformer" release-strategy-expression="size() == 2"/>
</si:scatter-gather>
<si:publish-subscribe-channel id="scatterInputChannel" apply-sequence="true"
task-executor="taskExecutor" />
<task:executor id="taskExecutor" queue-capacity="25" pool-size="10-10" />
<si:chain id="planngedBagsChain" input-channel="scatterInputChannel"
output-channel="gatherChannel">
<si:service-activator ref="webServiceClient1" method="getResponse" />
<si:service-activator ref="serviceHandler1" method="saveToDB" />
</si:chain>
<si:chain id="bagHistoryChain" input-channel="scatterInputChannel"
output-channel="gatherChannel">
<si:service-activator ref="webServiceClient2" method="getResponse" />
<si:transformer ref="transformer" />
<si:service-activator ref="serviceHandler2" method="saveToDB" />
</si:chain>