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enabled the hash bucket based implementation of MessageGroupMap by default and made the bucketCount configurable in the destination policy map 

git-svn-id: https://svn.apache.org/repos/asf/incubator/activemq/trunk@366208 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
James Strachan 2006-01-05 15:58:49 +00:00
parent e1d4780221
commit d7f91463d6
2 changed files with 32 additions and 4 deletions
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20
activemq-core/src/main/java/org/apache/activemq/broker/region/Queue.java
View File

@ -19,9 +19,9 @@ package org.apache.activemq.broker.region;
import edu.emory.mathcs.backport.java.util.concurrent.CopyOnWriteArrayList;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.region.group.MessageGroupHashBucket;
import org.apache.activemq.broker.region.group.MessageGroupMap;
import org.apache.activemq.broker.region.group.MessageGroupSet;
import org.apache.activemq.broker.region.group.SimpleMessageGroupMap;
import org.apache.activemq.broker.region.policy.DeadLetterStrategy;
import org.apache.activemq.broker.region.policy.DispatchPolicy;
import org.apache.activemq.broker.region.policy.RoundRobinDispatchPolicy;
@ -45,7 +45,6 @@ import java.io.IOException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
/**
* The Queue is a List of MessageEntry objects that are dispatched to matching
@ -65,7 +64,8 @@ public class Queue implements Destination {
protected final DestinationStatistics destinationStatistics = new DestinationStatistics();
private Subscription exclusiveOwner;
private final MessageGroupMap messageGroupOwners = new SimpleMessageGroupMap();
private MessageGroupMap messageGroupOwners;
private int messageGroupHashBucketCount = 1024;
protected long garbageSize = 0;
protected long garbageSizeBeforeCollection = 1000;
@ -186,7 +186,7 @@ public class Queue implements Destination {
}
ConsumerId consumerId = sub.getConsumerInfo().getConsumerId();
MessageGroupSet ownedGroups = messageGroupOwners.removeConsumer(consumerId);
MessageGroupSet ownedGroups = getMessageGroupOwners().removeConsumer(consumerId);
synchronized (messages) {
if (!sub.getConsumerInfo().isBrowser()) {
@ -323,6 +323,9 @@ public class Queue implements Destination {
}
public MessageGroupMap getMessageGroupOwners() {
if (messageGroupOwners == null) {
messageGroupOwners = new MessageGroupHashBucket(messageGroupHashBucketCount );
}
return messageGroupOwners;
}
@ -342,6 +345,15 @@ public class Queue implements Destination {
this.deadLetterStrategy = deadLetterStrategy;
}
public int getMessageGroupHashBucketCount() {
return messageGroupHashBucketCount;
}
public void setMessageGroupHashBucketCount(int messageGroupHashBucketCount) {
this.messageGroupHashBucketCount = messageGroupHashBucketCount;
}
// Implementation methods
// -------------------------------------------------------------------------
private MessageReference createMessageReference(Message message) {

16
activemq-core/src/main/java/org/apache/activemq/broker/region/policy/PolicyEntry.java
View File

@ -34,6 +34,7 @@ public class PolicyEntry extends DestinationMapEntry {
private SubscriptionRecoveryPolicy subscriptionRecoveryPolicy;
private boolean sendAdvisoryIfNoConsumers;
private DeadLetterStrategy deadLetterStrategy;
private int messageGroupHashBucketCount = 1024;
public void configure(Queue queue) {
if (dispatchPolicy != null) {
@ -42,6 +43,7 @@ public class PolicyEntry extends DestinationMapEntry {
if (deadLetterStrategy != null) {
queue.setDeadLetterStrategy(deadLetterStrategy);
}
queue.setMessageGroupHashBucketCount(messageGroupHashBucketCount);
}
public void configure(Topic topic) {
@ -98,5 +100,19 @@ public class PolicyEntry extends DestinationMapEntry {
this.deadLetterStrategy = deadLetterStrategy;
}
public int getMessageGroupHashBucketCount() {
return messageGroupHashBucketCount;
}
/**
* Sets the number of hash buckets to use for the message group functionality.
* This is only applicable to using message groups to parallelize processing of a queue
* while preserving order across an individual JMSXGroupID header value.
* This value sets the number of hash buckets that will be used (i.e. the maximum possible concurrency).
*/
public void setMessageGroupHashBucketCount(int messageGroupHashBucketCount) {
this.messageGroupHashBucketCount = messageGroupHashBucketCount;
}
}