org.apache.activemq.artemis.core.server.group.impl.GroupHandlingAbstract Maven / Gradle / Ivy
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* 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
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.activemq.artemis.core.server.group.impl;
import java.util.Collections;
import java.util.Set;
import java.util.WeakHashMap;
import java.util.concurrent.Executor;
import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.api.core.management.CoreNotificationType;
import org.apache.activemq.artemis.api.core.management.ManagementHelper;
import org.apache.activemq.artemis.core.postoffice.BindingType;
import org.apache.activemq.artemis.core.server.ActiveMQServerLogger;
import org.apache.activemq.artemis.core.server.group.GroupingHandler;
import org.apache.activemq.artemis.core.server.group.UnproposalListener;
import org.apache.activemq.artemis.core.server.management.ManagementService;
import org.apache.activemq.artemis.core.server.management.Notification;
import org.apache.activemq.artemis.utils.collections.TypedProperties;
public abstract class GroupHandlingAbstract implements GroupingHandler {
protected final Executor executor;
protected final ManagementService managementService;
protected final SimpleString address;
// no need to synchronize listeners as we use a single threaded executor on all its accesses
final Set listeners = Collections.newSetFromMap(new WeakHashMap());
public GroupHandlingAbstract(final Executor executor,
final ManagementService managementService,
final SimpleString address) {
this.executor = executor;
this.managementService = managementService;
this.address = address;
}
@Override
public void addListener(final UnproposalListener listener) {
if (executor == null) {
listeners.add(listener);
} else {
executor.execute(new Runnable() {
@Override
public void run() {
listeners.add(listener);
}
});
}
}
protected void fireUnproposed(final SimpleString groupID) {
Runnable runnable = new Runnable() {
@Override
public void run() {
for (UnproposalListener listener : listeners) {
listener.unproposed(groupID);
}
}
};
if (executor != null) {
executor.execute(runnable);
} else {
// for tests only, where we don't need an executor
runnable.run();
}
}
@Override
public void forceRemove(SimpleString groupid, SimpleString clusterName) throws Exception {
remove(groupid, clusterName);
sendUnproposal(groupid, clusterName, 0);
}
protected void sendUnproposal(SimpleString groupid, SimpleString clusterName, int distance) {
TypedProperties props = new TypedProperties();
props.putSimpleStringProperty(ManagementHelper.HDR_PROPOSAL_GROUP_ID, groupid);
props.putSimpleStringProperty(ManagementHelper.HDR_PROPOSAL_VALUE, clusterName);
props.putIntProperty(ManagementHelper.HDR_BINDING_TYPE, BindingType.LOCAL_QUEUE_INDEX);
props.putSimpleStringProperty(ManagementHelper.HDR_ADDRESS, address);
props.putIntProperty(ManagementHelper.HDR_DISTANCE, distance);
Notification notification = new Notification(null, CoreNotificationType.UNPROPOSAL, props);
try {
managementService.sendNotification(notification);
} catch (Exception e) {
ActiveMQServerLogger.LOGGER.errorHandlingMessage(e);
}
}
}