Author: davsclaus
Date: Sun Jun 24 15:02:17 2012
New Revision: 1353280
URL: http://svn.apache.org/viewvc?rev=1353280&view=rev
Log:
Added test based on user forum issue
Added:
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRestartFromBeginningTest.java
Added:
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRestartFromBeginningTest.java
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRestartFromBeginningTest.java?rev=1353280&view=auto
==============================================================================
---
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRestartFromBeginningTest.java
(added)
+++
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRestartFromBeginningTest.java
Sun Jun 24 15:02:17 2012
@@ -0,0 +1,101 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.processor;
+
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+import org.apache.camel.RecipientList;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.impl.JndiRegistry;
+
+/**
+ *
+ */
+public class DeadLetterChannelRestartFromBeginningTest extends
ContextTestSupport {
+
+ @Override
+ protected JndiRegistry createRegistry() throws Exception {
+ JndiRegistry jndi = super.createRegistry();
+ jndi.bind("retryBean", new RetryBean());
+ return jndi;
+ }
+
+ public void testRestartFromBeginning() throws Exception {
+ // 1 original + 4 redeliveries
+ getMockEndpoint("mock:start").expectedBodiesReceived("Camel", "Camel",
"Camel", "Camel", "Camel");
+ getMockEndpoint("mock:result").expectedBodiesReceived("Hello Camel");
+
+ // use fire and forget
+ template.sendBody("seda:start", "Camel");
+
+ setAssertPeriod(200);
+ assertMockEndpointsSatisfied();
+ }
+
+ @Override
+ protected RouteBuilder createRouteBuilder() throws Exception {
+ return new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ // use the DLQ and let the retryBean handle this
+
errorHandler(deadLetterChannel("bean:retryBean").useOriginalMessage());
+
+ // use seda:retry as a way of retrying from the input route
+ // the seda:start could be any other kind of fire and forget
endpoint
+ from("seda:start", "seda:retry")
+ .to("log:start", "mock:start")
+ .transform(body().prepend("Hello "))
+ .process(new Processor() {
+ private int counter;
+ @Override
+ public void process(Exchange exchange) throws
Exception {
+ // fail the first 3 times
+ if (counter++ <= 3) {
+ throw new IllegalArgumentException("Damn");
+ }
+ }
+ })
+ .to("mock:result");
+ }
+ };
+ }
+
+ /**
+ * Bean used as dead letter queue, that decides what to do with the message
+ */
+ public static class RetryBean {
+
+ // use recipient list to decide what to do with the message
+ @RecipientList
+ public String handleError(Exchange exchange) {
+ // store a property on the exchange with the number of total
attempts
+ int attempts = exchange.getProperty("attempts", 0, int.class);
+ attempts++;
+ exchange.setProperty("attempts", attempts);
+
+ // we want to retry at most 4 times
+ if (attempts <= 4) {
+ return "seda:retry";
+ } else {
+ // okay we give up its a poison message
+ return "log:giveup";
+ }
+ }
+ }
+
+}
