即使在配置组件选项后，Apache 骆驼连接池超时与 restlet

Question

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，路线没有任何问题。但是，当我尝试通过代码发送大量请求时，我得到“超时等待来自池的连接”

下面是相同的stackt-race：

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.getPoolEntry(ConnPoolByRoute.java:298)
at org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager.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.access0(MulticastProcessor.java:84)
at org.apache.camel.processor.MulticastProcessor.call(MulticastProcessor.java:314)
at org.apache.camel.processor.MulticastProcessor.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，但我仍然遇到同样的问题：

    @Bean
public RestletComponent restlet()
{
    RestletComponent restlet = new RestletComponent();
    restlet.setMaxThreads(100);
    restlet.setThreadMaxIdleTimeMs(10000);
    restlet.setMaxQueued(20);
    return restlet;
}

注意：路由确实一次接受了 10 个请求，然后我开始出错。从配置中我可以看到 maxThreads 默认为 10。这意味着我通过 Bean 所做的没有正确获取。

Answer 1

检查这些东西：

确保您已在 Spring 应用上下文 XML 文件中启用 <context:annotation-config/>。
在SpringXML中使用<context:component-scan base-package="<your package>" />。
确保您已经用 @Configuration.

@Bean

将 name 属性添加到 @Bean：@Bean(name={"restlet"})。

希望对您有所帮助。

Answer 2

实际上在我的代码中，我在路由配置后定义了 restlet bean，如下所示

public class RoutesBuilder extends FatJarRouter {

....

@Override
    public void configure() throws JAXBException {
    ......
}

@Bean(name={"restlet"})
    public RestletComponent restlet()
    {
        .......
    }
}

现在我已经改变了定义代码的顺序，即首先我定义了 restlet 和路由配置如下。有了它，我看到 restlet 配置已被拾取，我不再看到连接池问题。

public class RoutesBuilder extends FatJarRouter {

....

@Bean(name={"restlet"})
    public RestletComponent restlet()
    {
        .......
    }

@Override
    public void configure() throws JAXBException {
    ......
}


}

Answer 3

看看这个例子。它的Spring-启动APP。我创建了一个单独的配置 class 并使用了 spring-boot 配置注释，所以在启动时 spring-boot 会完成所有需要的配置

这是一个可行的解决方案 https://github.com/RakeshBhat/rb-springbootcamelrestlet

即使在配置组件选项后，Apache 骆驼连接池超时与 restlet

Apache camel Connection pool timeout with restlet even after configuring component options

java

apache-camel

restlet