本文介绍了即使在配置组件选项后，Apache骆驼连接池超时与restlet的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个调用restlet端点的camel Java DSL路由.当我手动点击相同的路线时，路线工作没有任何问题.但是，当我尝试通过代码抽取大量请求时，我收到等待池中的连接超时"
I have a camel Java DSL route which invokes a restlet endpoint. And the route works without any issues when I hit the same manually. But, when I try to pump a larger number of requests through code I'm getting "Timeout waiting for connection from pool"
以下是相同的stackt-race:
And the following is stackt-race of the same:
2016-01-29 14:09:38.650 WARN 20256 --- [pool-3-thread-2] org.restlet : An error occurred during the communication with the remote HTTP server.org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool
at org.apache.http.impl.conn.tsccm.ConnPoolByRoute.getEntryBlocking(ConnPoolByRoute.java:412)
at org.apache.http.impl.conn.tsccm.ConnPoolByRoute$1.getPoolEntry(ConnPoolByRoute.java:298)
at org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager$1.getConnection(ThreadSafeClientConnManager.java:238)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:423)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.restlet.ext.httpclient.internal.HttpMethodCall.sendRequest(HttpMethodCall.java:339)
at org.restlet.engine.adapter.ClientAdapter.commit(ClientAdapter.java:105)
at org.restlet.engine.adapter.HttpClientHelper.handle(HttpClientHelper.java:119)
at org.restlet.Client.handle(Client.java:153)
at org.restlet.Restlet.handle(Restlet.java:275)
at org.apache.camel.component.restlet.RestletProducer.process(RestletProducer.java:79)
at org.apache.camel.component.restlet.RestletProducer.process(RestletProducer.java:98)
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:141)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:460)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:121)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:460)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at org.apache.camel.processor.MulticastProcessor.doProcessSequential(MulticastProcessor.java:668)
at org.apache.camel.processor.MulticastProcessor.doProcessSequential(MulticastProcessor.java:596)
at org.apache.camel.processor.MulticastProcessor.process(MulticastProcessor.java:237)
at org.apache.camel.processor.Splitter.process(Splitter.java:104)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:460)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:121)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:62)
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:141)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:460)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:190)
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)
at org.apache.camel.processor.MulticastProcessor.doProcessParallel(MulticastProcessor.java:814)
at org.apache.camel.processor.MulticastProcessor.access$200(MulticastProcessor.java:84)
at org.apache.camel.processor.MulticastProcessor$1.call(MulticastProcessor.java:314)
at org.apache.camel.processor.MulticastProcessor$1.call(MulticastProcessor.java:299)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
根据文档，我确实使用以下代码配置了 restlet 组件，但我仍然看到相同的问题:
And as per the doc I did configure the restlet component with the following code but I'm still seeing the same issue:
@Bean
public RestletComponent restlet()
{
RestletComponent restlet = new RestletComponent();
restlet.setMaxThreads(100);
restlet.setThreadMaxIdleTimeMs(10000);
restlet.setMaxQueued(20);
return restlet;
}
注意:该路由确实一次接受了 10 个请求，然后我开始收到错误消息.从配置中我可以看到默认情况下的 maxThreads 是 10.这意味着我通过 Bean 所做的没有正确拾取.
推荐答案
实际上在我的代码中我已经定义了路由配置后的restlet bean，即如下
Actually in my code I have defined restlet bean after route configure i.e as below
public class RoutesBuilder extends FatJarRouter {
....
@Override
public void configure() throws JAXBException {
......
}
@Bean(name={"restlet"})
public RestletComponent restlet()
{
.......
}
}
现在我改变了定义代码的顺序，即首先我定义了restlet，路由配置如下.有了这个，我看到restlet配置被选中，我不再看到连接池问题.
And now I have changed the order of defining the code as i.e first I have defined restlet and the route configure as below. With that in place I saw the restlet configuration is been picked up and I no more see the connection pool issue.
public class RoutesBuilder extends FatJarRouter {
....
@Bean(name={"restlet"})
public RestletComponent restlet()
{
.......
}
@Override
public void configure() throws JAXBException {
......
}
}
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