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https://issues.apache.org/activemq/browse/CAMEL-3188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen updated CAMEL-3188:
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Affects Version/s: 2.3.0
CAMEL-2651 is the culprit.
> Concurrent consumers on seda endpoint can cause content routing to mismatch
> ---------------------------------------------------------------------------
>
> Key: CAMEL-3188
> URL: https://issues.apache.org/activemq/browse/CAMEL-3188
> Project: Apache Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 2.3.0, 2.4.0
> Environment: Mac OS X 10.6.4
> Java(TM) SE Runtime Environment (build 1.6.0_20-b02-279-10M3065)
> Reporter: Brian Feaver
> Assignee: Claus Ibsen
>
> When consuming concurrently from a seda endpoint, when the route contains a
> content router based on the header, it will randomly route through the wrong
> choice.
> In my specific case, I was consuming from an activemq queue, which would
> receive messages with a header that would then determine which route it would
> follow. It would randomly send messages down the wrong path. When I turned on
> tracing, it would behave itself. It also behaved itself when I limited it to
> only a single consumer. I was, however, able to duplicate it with the unit
> test below. Due to the concurrency issue, the test can occasionally pass, but
> run it a couple times and it should fail. It'll either receive 2 messages
> when it should have only gotten 1, or it will get no messages when it should
> have gotten 1.
> {code:title=ConcurrencyTest.java|borderStyle=solid}
> import org.apache.camel.EndpointInject;
> import org.apache.camel.Produce;
> import org.apache.camel.ProducerTemplate;
> import org.apache.camel.builder.RouteBuilder;
> import org.apache.camel.component.mock.MockEndpoint;
> import org.apache.camel.test.CamelTestSupport;
> public class ConcurrencyTest extends CamelTestSupport {
> @EndpointInject(uri = "mock:result")
> protected MockEndpoint resultEndpoint;
>
> @EndpointInject(uri = "mock:otherResult")
> protected MockEndpoint otherResultEndpoint;
> @Produce(uri = "seda:start")
> protected ProducerTemplate template;
> public void testSendMatchingMessage() throws Exception {
> String expectedBody = "<matched/>";
>
> resultEndpoint.expectedBodiesReceived(expectedBody);
> otherResultEndpoint.expectedBodiesReceived(expectedBody);
> template.sendBodyAndHeader(expectedBody, "myDirection", "send");
> template.sendBodyAndHeader(expectedBody, "myDirection",
> "received");
> resultEndpoint.assertIsSatisfied();
> }
> @Override
> protected RouteBuilder createRouteBuilder() {
> return new RouteBuilder() {
> public void configure() {
> from("seda:start?concurrentConsumers=10")
> // from("seda:start?concurrentConsumers=1")
> .choice()
>
> .when(header("myDirection").isEqualTo("send")).to("mock:result")
>
> .when(header("myDirection").isEqualTo("received")).to("mock:otherResult");
> }
> };
> }
> }
> {code}
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