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/*******************************************************************************
* Copyright (c) 2010 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.messaging.services.internal;
import java.net.URI;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import org.eclipse.osee.framework.jdk.core.type.CompositeKeyHashMap;
import org.eclipse.osee.framework.messaging.ConnectionNode;
import org.eclipse.osee.framework.messaging.services.BaseMessages;
import org.eclipse.osee.framework.messaging.services.RegisteredServiceReference;
import org.eclipse.osee.framework.messaging.services.RemoteServiceRegistrar;
import org.eclipse.osee.framework.messaging.services.ServiceInfoPopulator;
/**
* @author Andrew M. Finkbeiner
*/
public class RemoteServiceRegistrarImpl implements RemoteServiceRegistrar {
private ConnectionNode connectionNode;
private ConcurrentHashMap<String, ScheduledFuture<?>> map;
private ConcurrentHashMap<String, UpdateStatus> mapOfUpdateStatus;
private CompositeKeyHashMap<String, String, List<UpdateStatus>> mapForReplys;
private ScheduledExecutorService executor;
private HealthRequestListener healthRequestListener;
public RemoteServiceRegistrarImpl(ConnectionNode node, ScheduledExecutorService executor) {
this.connectionNode = node;
this.executor = executor;
mapOfUpdateStatus = new ConcurrentHashMap<String, UpdateStatus>();
map = new ConcurrentHashMap<String, ScheduledFuture<?>>();
mapForReplys = new CompositeKeyHashMap<String, String, List<UpdateStatus>>(8, true);
healthRequestListener = new HealthRequestListener(mapForReplys);
}
public void start() {
connectionNode.subscribe(BaseMessages.ServiceHealthRequest, healthRequestListener, new OseeMessagingStatusImpl("Failed to subscribe to " + BaseMessages.ServiceHealthRequest.getName(), RemoteServiceRegistrarImpl.class));
}
public void stop() {
connectionNode.unsubscribe(BaseMessages.ServiceHealthRequest, healthRequestListener, new OseeMessagingStatusImpl("Failed to subscribe to " + BaseMessages.ServiceHealthRequest.getName(), RemoteServiceRegistrarImpl.class));
}
@Override
public RegisteredServiceReference registerService(String serviceName, String serviceVersion, String serviceUniqueId, URI broker, ServiceInfoPopulator infoPopulator, int refreshRateInSeconds) {
String key = getKey(serviceName, serviceVersion, serviceUniqueId);
if (!mapOfUpdateStatus.containsKey(key)) {
UpdateStatus updateStatus = new UpdateStatus(this.connectionNode, serviceName, serviceVersion, serviceUniqueId, broker, refreshRateInSeconds, infoPopulator);
ScheduledFuture<?> scheduled = executor.scheduleAtFixedRate(updateStatus, 0, refreshRateInSeconds, TimeUnit.SECONDS);
map.put(key, scheduled);
mapOfUpdateStatus.put(key, updateStatus);
addToReplyMap(serviceName, serviceVersion, updateStatus);
}
return new ServiceReferenceImp(mapOfUpdateStatus.get(key));
}
private String getKey(String serviceName, String serviceVersion, String serviceUniqueId){
return serviceName + serviceVersion + serviceUniqueId;
}
@Override
public boolean unregisterService(String serviceName, String serviceVersion, String serviceUniqueId) {
String key = getKey(serviceName, serviceVersion, serviceUniqueId);
UpdateStatus updateStatus = mapOfUpdateStatus.remove(key);
if(updateStatus != null){
updateStatus.close();
removeFromReplyMap(serviceName, serviceVersion, updateStatus);
}
ScheduledFuture<?> scheduled = map.remove(key);
if (scheduled == null) {
return false;
} else {
return scheduled.cancel(false);
}
}
public void addToReplyMap(String serviceName, String serviceVersion, UpdateStatus updateForReply) {
List<UpdateStatus> list = mapForReplys.get(serviceName, serviceVersion);
if (list == null) {
list = new CopyOnWriteArrayList<UpdateStatus>();
mapForReplys.put(serviceName, serviceVersion, list);
}
list.add(updateForReply);
}
public boolean removeFromReplyMap(String serviceName, String serviceVersion, UpdateStatus updateForReply) {
List<UpdateStatus> list = mapForReplys.get(serviceName, serviceVersion);
if (list != null) {
return list.remove(updateForReply);
}
return false;
}
void updateService(String key) {
UpdateStatus update = mapOfUpdateStatus.get(key);
if(update != null){
update.run();
}
}
}
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