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Posted to commits@camel.apache.org by da...@apache.org on 2009/02/21 13:18:09 UTC
svn commit: r746489 - in /camel/trunk/camel-core/src:
main/java/org/apache/camel/builder/ main/java/org/apache/camel/processor/
test/java/org/apache/camel/processor/
Author: davsclaus
Date: Sat Feb 21 12:18:08 2009
New Revision: 746489
URL: http://svn.apache.org/viewvc?rev=746489&view=rev
Log:
CAMEL-1376, CAMEL-935: Introduced delayPattern and fixed a bug with onRedelivery in DeadLetterChannel.
Added:
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryDelayPatternTest.java
- copied, changed from r746448, camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryTest.java
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java (with props)
Modified:
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/DeadLetterChannelBuilder.java
camel/trunk/camel-core/src/main/java/org/apache/camel/processor/DeadLetterChannel.java
camel/trunk/camel-core/src/main/java/org/apache/camel/processor/RedeliveryPolicy.java
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelOnRedeliveryTest.java
Modified: camel/trunk/camel-core/src/main/java/org/apache/camel/builder/DeadLetterChannelBuilder.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/builder/DeadLetterChannelBuilder.java?rev=746489&r1=746488&r2=746489&view=diff
==============================================================================
--- camel/trunk/camel-core/src/main/java/org/apache/camel/builder/DeadLetterChannelBuilder.java (original)
+++ camel/trunk/camel-core/src/main/java/org/apache/camel/builder/DeadLetterChannelBuilder.java Sat Feb 21 12:18:08 2009
@@ -89,6 +89,11 @@
return this;
}
+ public DeadLetterChannelBuilder delayPattern(String delayPattern) {
+ getRedeliveryPolicy().delayPattern(delayPattern);
+ return this;
+ }
+
public DeadLetterChannelBuilder maximumRedeliveries(int maximumRedeliveries) {
getRedeliveryPolicy().maximumRedeliveries(maximumRedeliveries);
return this;
Modified: camel/trunk/camel-core/src/main/java/org/apache/camel/processor/DeadLetterChannel.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/processor/DeadLetterChannel.java?rev=746489&r1=746488&r2=746489&view=diff
==============================================================================
--- camel/trunk/camel-core/src/main/java/org/apache/camel/processor/DeadLetterChannel.java (original)
+++ camel/trunk/camel-core/src/main/java/org/apache/camel/processor/DeadLetterChannel.java Sat Feb 21 12:18:08 2009
@@ -180,7 +180,7 @@
MessageHelper.resetStreamCache(exchange.getIn());
// wait until we should redeliver
- data.redeliveryDelay = data.currentRedeliveryPolicy.sleep(data.redeliveryDelay);
+ data.redeliveryDelay = data.currentRedeliveryPolicy.sleep(data.redeliveryDelay, data.redeliveryCounter);
// letting onRedeliver be executed
deliverToRedeliveryProcessor(exchange, callback, data);
@@ -257,7 +257,7 @@
exchange.setException(null);
}
// wait until we should redeliver
- data.redeliveryDelay = data.currentRedeliveryPolicy.getRedeliveryDelay(data.redeliveryDelay);
+ data.redeliveryDelay = data.currentRedeliveryPolicy.calculateRedeliveryDelay(data.redeliveryDelay, data.redeliveryCounter);
timer.schedule(new RedeliverTimerTask(exchange, callback, data), data.redeliveryDelay);
// letting onRedeliver be executed
@@ -293,23 +293,24 @@
* Gives an optional configure redelivery processor a chance to process before the Exchange
* will be redelivered. This can be used to alter the Exchange.
*/
- private boolean deliverToRedeliveryProcessor(final Exchange exchange, final AsyncCallback callback,
+ private void deliverToRedeliveryProcessor(final Exchange exchange, final AsyncCallback callback,
final RedeliveryData data) {
if (redeliveryProcessor == null) {
- return true;
+ return;
}
if (LOG.isTraceEnabled()) {
- LOG.trace("RedeliveryProcessor " + redeliveryProcessor + " is processing Exchange before its redelivered");
+ LOG.trace("RedeliveryProcessor " + redeliveryProcessor + " is processing Exchange: " + exchange + " before its redelivered");
}
+
AsyncProcessor afp = AsyncProcessorTypeConverter.convert(redeliveryProcessor);
- boolean sync = afp.process(exchange, new AsyncCallback() {
+ afp.process(exchange, new AsyncCallback() {
public void done(boolean sync) {
- callback.done(data.sync);
+ LOG.trace("Redelivery processor done");
+ // do NOT call done on callback as this is the redelivery processor that
+ // is done. we should not mark the entire exchange as done.
}
});
-
- return sync;
}
private boolean deliverToFaultProcessor(final Exchange exchange, final AsyncCallback callback,
Modified: camel/trunk/camel-core/src/main/java/org/apache/camel/processor/RedeliveryPolicy.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/processor/RedeliveryPolicy.java?rev=746489&r1=746488&r2=746489&view=diff
==============================================================================
--- camel/trunk/camel-core/src/main/java/org/apache/camel/processor/RedeliveryPolicy.java (original)
+++ camel/trunk/camel-core/src/main/java/org/apache/camel/processor/RedeliveryPolicy.java Sat Feb 21 12:18:08 2009
@@ -20,6 +20,7 @@
import org.apache.camel.Exchange;
import org.apache.camel.Predicate;
+import org.apache.camel.util.ObjectHelper;
import org.apache.camel.model.LoggingLevel;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@@ -47,6 +48,23 @@
* <p/>
* Setting the maximumRedeliveries to a negative value such as -1 will then always redeliver (unlimited).
* Setting the maximumRedeliveries to 0 will disable redelivery.
+ * <p/>
+ * This policy can be configured either by one of the following two settings:
+ * <ul>
+ * <li>using convnetional options, using all the options defined above</li>
+ * <li>using delay pattern to declare intervals for delays</li>
+ * </ul>
+ * <p/>
+ * <b>Note:</b> If using delay patterns then the following options is not used (delay, backOffMultiplier, useExponentialBackOff, useCollisionAvoidance)
+ * <p/>
+ * <b>Using delay pattern</b>:
+ * <br/>The delay pattern syntax is: <tt>limit:delay;limit 2:delay 2;limit 3:delay 3;...;limit N:delay N</tt>.
+ * <p/>
+ * How it works is best illustrate with an example with this pattern: <tt>delayPattern=5:1000;10:5000:20:20000</tt>
+ * <br/>The delays will be for attempt in range 0..4 = 0 millis, 5..9 = 1000 millis, 10..19 = 5000 millis, >= 20 = 20000 millis.
+ * <p/>
+ * If you want to set a starting delay, then use 0 as the first limit, eg: <tt>0:1000;5:5000</tt> will use 1 sec delay
+ * until attempt number 5 where it will use 5 seconds going forward.
*
* @version $Revision$
*/
@@ -63,6 +81,7 @@
protected boolean useCollisionAvoidance;
protected LoggingLevel retriesExhaustedLogLevel = LoggingLevel.ERROR;
protected LoggingLevel retryAttemptedLogLevel = LoggingLevel.ERROR;
+ protected String delayPattern;
public RedeliveryPolicy() {
}
@@ -77,7 +96,8 @@
+ ", useExponentialBackOff=" + useExponentialBackOff
+ ", backOffMultiplier=" + backOffMultiplier
+ ", useCollisionAvoidance=" + useCollisionAvoidance
- + ", collisionAvoidanceFactor=" + collisionAvoidanceFactor + "]";
+ + ", collisionAvoidanceFactor=" + collisionAvoidanceFactor
+ + ", delayPattern=" + delayPattern + "]";
}
public RedeliveryPolicy copy() {
@@ -114,9 +134,13 @@
/**
* Calculates the new redelivery delay based on the last one then sleeps for the necessary amount of time
+ *
+ * @param redeliveryDelay previous redelivery delay
+ * @param redeliveryCounter number of previous redelivery attempts
+ * @return the calculate delay
*/
- public long sleep(long redeliveryDelay) {
- redeliveryDelay = getRedeliveryDelay(redeliveryDelay);
+ public long sleep(long redeliveryDelay, int redeliveryCounter) {
+ redeliveryDelay = calculateRedeliveryDelay(redeliveryDelay, redeliveryCounter);
if (redeliveryDelay > 0) {
if (LOG.isDebugEnabled()) {
@@ -125,18 +149,22 @@
try {
Thread.sleep(redeliveryDelay);
} catch (InterruptedException e) {
- if (LOG.isDebugEnabled()) {
- LOG.debug("Thread interrupted: " + e, e);
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("Thread interrupted: " + e, e);
}
}
}
return redeliveryDelay;
}
+ protected long calculateRedeliveryDelay(long previousDelay, int redeliveryCounter) {
+ if (ObjectHelper.isNotEmpty(delayPattern)) {
+ // calculate delay using the pattern
+ return calculateRedeliverDelayUsingPattern(delayPattern, redeliveryCounter);
+ }
- public long getRedeliveryDelay(long previousDelay) {
+ // calculate the delay using the conventional parameters
long redeliveryDelay;
-
if (previousDelay == 0) {
redeliveryDelay = delay;
} else if (useExponentialBackOff && backOffMultiplier > 1) {
@@ -164,6 +192,28 @@
return redeliveryDelay;
}
+ /**
+ * Calculates the delay using the delay pattern
+ */
+ protected static long calculateRedeliverDelayUsingPattern(String delayPattern, int redeliveryCounter) {
+ String[] groups = delayPattern.split(";");
+ // find the group where ther redelivery counter matches
+ long answer = 0;
+ for (String group : groups) {
+ long delay = Long.valueOf(ObjectHelper.after(group, ":"));
+ int count = Integer.valueOf(ObjectHelper.before(group, ":"));
+
+
+ if (count > redeliveryCounter) {
+ break;
+ } else {
+ answer = delay;
+ }
+ }
+
+ return answer;
+ }
+
// Builder methods
// -------------------------------------------------------------------------
@@ -238,6 +288,14 @@
return this;
}
+ /**
+ * Sets the delay pattern with delay intervals.
+ */
+ public RedeliveryPolicy delayPattern(String delayPattern) {
+ setDelayPattern(delayPattern);
+ return this;
+ }
+
// Properties
// -------------------------------------------------------------------------
public double getBackOffMultiplier() {
@@ -352,4 +410,15 @@
public LoggingLevel getRetryAttemptedLogLevel() {
return retryAttemptedLogLevel;
}
+
+ public String getDelayPattern() {
+ return delayPattern;
+ }
+
+ /**
+ * Sets an optional delay pattern to use insted of fixed delay.
+ */
+ public void setDelayPattern(String delayPattern) {
+ this.delayPattern = delayPattern;
+ }
}
Modified: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelOnRedeliveryTest.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelOnRedeliveryTest.java?rev=746489&r1=746488&r2=746489&view=diff
==============================================================================
--- camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelOnRedeliveryTest.java (original)
+++ camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelOnRedeliveryTest.java Sat Feb 21 12:18:08 2009
@@ -38,7 +38,7 @@
assertMockEndpointsSatisfied();
}
- public void testOnExceptionAlterMessageWithHeadersBeforeRedelivery() throws Exception {
+ public void xxxtestOnExceptionAlterMessageWithHeadersBeforeRedelivery() throws Exception {
MockEndpoint mock = getMockEndpoint("mock:result");
mock.expectedBodiesReceived("Hello World123");
mock.expectedHeaderReceived("foo", "123");
Copied: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryDelayPatternTest.java (from r746448, camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryTest.java)
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryDelayPatternTest.java?p2=camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryDelayPatternTest.java&p1=camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryTest.java&r1=746448&r2=746489&rev=746489&view=diff
==============================================================================
--- camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryTest.java (original)
+++ camel/trunk/camel-core/src/test/java/org/apache/camel/processor/DeadLetterChannelRedeliveryDelayPatternTest.java Sat Feb 21 12:18:08 2009
@@ -19,109 +19,56 @@
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
-import org.apache.camel.RuntimeCamelException;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
+import static org.apache.camel.builder.ProcessorBuilder.throwException;
/**
- * Unit test to verify that redelivery counters is working as expected.
+ * Unit test to verify delay pattern
*/
-public class DeadLetterChannelRedeliveryTest extends ContextTestSupport {
+public class DeadLetterChannelRedeliveryDelayPatternTest extends ContextTestSupport {
private static int counter;
- public void testRedeliveryTest() throws Exception {
+ public void testDelayPatternTest() throws Exception {
counter = 0;
// We expect the exchange here after 1 delivery and 2 re-deliveries
MockEndpoint mock = getMockEndpoint("mock:error");
mock.expectedMessageCount(1);
mock.message(0).header("org.apache.camel.Redelivered").isEqualTo(Boolean.TRUE);
- mock.message(0).header("org.apache.camel.RedeliveryCounter").isEqualTo(2);
+ mock.message(0).header("org.apache.camel.RedeliveryCounter").isEqualTo(3);
+ long start = System.currentTimeMillis();
try {
template.sendBody("direct:start", "Hello World");
- } catch (RuntimeCamelException e) {
+ fail("Should have thrown exception");
+ } catch (Exception e) {
// expected
+ assertEquals("Forced exception by unit test", e.getCause().getMessage());
}
+ long delta = System.currentTimeMillis() - start;
+ assertTrue("Should be slower", delta > 1000);
assertMockEndpointsSatisfied();
- assertEquals(3, counter); // One call + 2 re-deliveries
- }
-
- public void testNoRedeliveriesTest() throws Exception {
- counter = 0;
-
- // We expect the exchange here after 1 delivery
- MockEndpoint mock = getMockEndpoint("mock:no");
- mock.expectedMessageCount(1);
- mock.message(0).header("org.apache.camel.Redelivered").isEqualTo(Boolean.FALSE);
- mock.message(0).header("org.apache.camel.RedeliveryCounter").isEqualTo(0);
-
- try {
- template.sendBody("direct:no", "Hello World");
- } catch (RuntimeCamelException e) {
- // expected
- }
-
- assertMockEndpointsSatisfied();
-
- assertEquals(1, counter); // One call
- }
-
- public void testOneRedeliveryTest() throws Exception {
- counter = 0;
-
- // We expect the exchange here after 1 delivery and 1 re delivery
- MockEndpoint mock = getMockEndpoint("mock:one");
- mock.expectedMessageCount(1);
- mock.message(0).header("org.apache.camel.Redelivered").isEqualTo(Boolean.TRUE);
- mock.message(0).header("org.apache.camel.RedeliveryCounter").isEqualTo(1);
-
- try {
- template.sendBody("direct:one", "Hello World");
- } catch (RuntimeCamelException e) {
- // expected
- }
-
- assertMockEndpointsSatisfied();
-
- assertEquals(2, counter); // One call + 1 re-delivery
+ assertEquals(3, counter);
}
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
public void configure() throws Exception {
- from("direct:start")
- .errorHandler(deadLetterChannel("mock:error").maximumRedeliveries(2))
- .process(new Processor() {
- public void process(Exchange exchange) throws Exception {
- counter++;
- throw new Exception("Forced exception by unit test");
- }
- });
-
- from("direct:no")
- .errorHandler(deadLetterChannel("mock:no").maximumRedeliveries(0))
- .process(new Processor() {
- public void process(Exchange exchange) throws Exception {
- counter++;
- throw new Exception("Forced exception by unit test");
- }
- });
-
- from("direct:one")
- .errorHandler(deadLetterChannel("mock:one").maximumRedeliveries(1))
- .process(new Processor() {
- public void process(Exchange exchange) throws Exception {
- counter++;
- throw new Exception("Forced exception by unit test");
- }
- });
+ errorHandler(deadLetterChannel("mock:error").delayPattern("0:250;2:500").maximumRedeliveries(3)
+ .onRedelivery(new Processor() {
+ public void process(Exchange exchange) throws Exception {
+ counter++;
+ }
+ }));
+
+ from("direct:start").process(throwException(new Exception("Forced exception by unit test")));
}
};
}
-}
+}
\ No newline at end of file
Added: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java?rev=746489&view=auto
==============================================================================
--- camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java (added)
+++ camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java Sat Feb 21 12:18:08 2009
@@ -0,0 +1,52 @@
+/**
+ * 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 junit.framework.TestCase;
+
+/**
+ * @version $Revision$
+ */
+public class RedeliveryPolicyDelayPatternTest extends TestCase {
+
+ private RedeliveryPolicy policy = new RedeliveryPolicy();
+
+ public void testDelayPattern() throws Exception {
+ policy.setDelayPattern("3:1000;5:3000;10:5000;20:10000");
+
+ assertEquals(0, policy.calculateRedeliveryDelay(0, 0));
+ assertEquals(0, policy.calculateRedeliveryDelay(0, 1));
+ assertEquals(0, policy.calculateRedeliveryDelay(0, 2));
+ assertEquals(1000, policy.calculateRedeliveryDelay(0, 3));
+ assertEquals(1000, policy.calculateRedeliveryDelay(0, 4));
+ assertEquals(3000, policy.calculateRedeliveryDelay(0, 5));
+ assertEquals(3000, policy.calculateRedeliveryDelay(0, 5));
+ assertEquals(3000, policy.calculateRedeliveryDelay(0, 6));
+ assertEquals(3000, policy.calculateRedeliveryDelay(0, 7));
+ assertEquals(3000, policy.calculateRedeliveryDelay(0, 8));
+ assertEquals(3000, policy.calculateRedeliveryDelay(0, 9));
+ assertEquals(5000, policy.calculateRedeliveryDelay(0, 10));
+ assertEquals(5000, policy.calculateRedeliveryDelay(0, 11));
+ assertEquals(5000, policy.calculateRedeliveryDelay(0, 15));
+ assertEquals(5000, policy.calculateRedeliveryDelay(0, 19));
+ assertEquals(10000, policy.calculateRedeliveryDelay(0, 20));
+ assertEquals(10000, policy.calculateRedeliveryDelay(0, 21));
+ assertEquals(10000, policy.calculateRedeliveryDelay(0, 25));
+ assertEquals(10000, policy.calculateRedeliveryDelay(0, 50));
+ assertEquals(10000, policy.calculateRedeliveryDelay(0, 100));
+ }
+}
Propchange: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java
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Propchange: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RedeliveryPolicyDelayPatternTest.java
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svn:keywords = Rev Date