inteligr8/alfresco-community-repo
1
0
Fork 0
mirror of https://github.com/Alfresco/alfresco-community-repo.git synced 2025-08-07 17:49:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merged V3.1 to HEAD

Browse Source 
13107: Remove accidentally added .project file.
   13106: Correction to 13104 - remove accidentally included merge marks
   13105: Correction to 13104 - remove accidentally included merge marks
   13104: Update continuous build to include Hyperic plugin amongst distributables
   13092: Fix ConnectionPoolMBean. Naming of boolean methods didn't match those on DBCP BasicDataSource
   13088: Bring hyperic plugin in sync with Derek's recent JMX changes
   13076: Extended properties available on ConnectionPoolMBean
   13045: Merged V3.0 to v3.1 (record only)
      13044: Merged V2.2 to V3.0
         13041: Merged V3.1 to V2.2
            13037: PostgreSQL upgrade scripts from 2.1.6, 2.2.0, and 2.2.1


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@13522 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Dave Ward
2009-03-10 13:51:31 +00:00
parent 7b66781036
commit bc91efa1e0
1 changed files with 198 additions and 185 deletions
Download Patch File Download Diff File Expand all files Collapse all files

383
source/java/org/alfresco/repo/cache/jgroups/JGroupsKeepAliveHeartbeatReceiver.java vendored
View File

@@ -24,194 +24,207 @@
*/ */
package org.alfresco.repo.cache.jgroups; package org.alfresco.repo.cache.jgroups;
import java.util.Collections; import net.sf.ehcache.distribution.MulticastKeepaliveHeartbeatSender;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.alfresco.util.EqualsHelper;
import org.alfresco.util.TraceableThreadFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jgroups.Address;
import org.jgroups.Channel;
import org.jgroups.Message;
import org.jgroups.ReceiverAdapter;
import org.jgroups.View;
/** /**
* Receives heartbeats from the {@link JGroupsKeepAliveHeartbeatSender JGroups heartbeat sender}. * Receives heartbeats from any {@link MulticastKeepaliveHeartbeatSender}s out there.
* <p/>
* Our own multicast heartbeats are ignored.
* *
* @author Derek Hulley * @author Greg Luck
* @since 2.1.3 * @version $Id: MulticastKeepaliveHeartbeatReceiver.java 556 2007-10-29 02:06:30Z gregluck $
*/ */
public class JGroupsKeepAliveHeartbeatReceiver extends ReceiverAdapter public abstract class JGroupsKeepaliveHeartbeatReceiver
{ {
private static final int MAX_THREADS = 5; // private static final Log LOG = LogFactory.getLog(MulticastKeepaliveHeartbeatReceiver.class.getName());
//
private static Log logger = LogFactory.getLog(JGroupsKeepAliveHeartbeatReceiver.class); // private ExecutorService processingThreadPool;
// private Set rmiUrlsProcessingQueue = Collections.synchronizedSet(new HashSet());
private final JGroupsRMICacheManagerPeerProvider peerProvider; // private final InetAddress groupMulticastAddress;
private final JGroupsKeepAliveHeartbeatSender heartbeatSender; // private final Integer groupMulticastPort;
private final Channel channel; // private MulticastReceiverThread receiverThread;
private boolean stopped; // private MulticastSocket socket;
private View lastView; // private boolean stopped;
private final ThreadPoolExecutor threadPool; // private final MulticastRMICacheManagerPeerProvider peerProvider;
private final Set<String> rmiUrlsProcessingQueue; //
// /**
public JGroupsKeepAliveHeartbeatReceiver( // * Constructor.
JGroupsRMICacheManagerPeerProvider peerProvider, // *
JGroupsKeepAliveHeartbeatSender heartbeatSender, // * @param peerProvider
Channel channel) // * @param multicastAddress
{ // * @param multicastPort
this.peerProvider = peerProvider; // */
this.heartbeatSender = heartbeatSender; // public MulticastKeepaliveHeartbeatReceiver(
this.channel = channel; // MulticastRMICacheManagerPeerProvider peerProvider, InetAddress multicastAddress, Integer multicastPort) {
// this.peerProvider = peerProvider;
this.rmiUrlsProcessingQueue = Collections.synchronizedSet(new HashSet<String>()); // this.groupMulticastAddress = multicastAddress;
// this.groupMulticastPort = multicastPort;
// Build the thread pool // }
TraceableThreadFactory threadFactory = new TraceableThreadFactory(); //
threadFactory.setThreadDaemon(true); // /**
threadFactory.setThreadPriority(Thread.NORM_PRIORITY + 2); // * Start.
// *
this.threadPool = new ThreadPoolExecutor( // * @throws IOException
1, // Maintain one threads // */
1, // We'll increase it, if necessary // final void init() throws IOException {
60, // 1 minute until unused threads get trashed // socket = new MulticastSocket(groupMulticastPort.intValue());
TimeUnit.SECONDS, // socket.joinGroup(groupMulticastAddress);
new LinkedBlockingQueue<Runnable>(), // receiverThread = new MulticastReceiverThread();
threadFactory); // receiverThread.start();
} // processingThreadPool = Executors.newCachedThreadPool();
// }
/** //
* Register to receive message on the channel // /**
*/ // * Shutdown the heartbeat.
public void init() // */
{ // public final void dispose() {
channel.setReceiver(this); // LOG.debug("dispose called");
} // processingThreadPool.shutdownNow();
// stopped = true;
/** // receiverThread.interrupt();
* Set the stop flag. // }
*/ //
public void dispose() // /**
{ // * A multicast receiver which continously receives heartbeats.
stopped = true; // */
} // private final class MulticastReceiverThread extends Thread {
//
@Override // /**
public byte[] getState() // * Constructor
{ // */
return new byte[] {}; // public MulticastReceiverThread() {
} // super("Multicast Heartbeat Receiver Thread");
// setDaemon(true);
@Override // }
public void setState(byte[] state) //
{ // public final void run() {
// Nothing to do // byte[] buf = new byte[PayloadUtil.MTU];
} // try {
// while (!stopped) {
@Override // DatagramPacket packet = new DatagramPacket(buf, buf.length);
public void receive(Message message) // try {
{ // socket.receive(packet);
Address localAddress = heartbeatSender.getHeartbeatSourceAddress(); // byte[] payload = packet.getData();
Address remoteAddress = message.getSrc(); // processPayload(payload);
// Ignore messages from ourselves //
if (EqualsHelper.nullSafeEquals(localAddress, remoteAddress)) //
{ // } catch (IOException e) {
if (logger.isDebugEnabled()) // if (!stopped) {
{ // LOG.error("Error receiving heartbeat. " + e.getMessage() +
logger.debug("\n" + // ". Initial cause was " + e.getMessage(), e);
"Ignoring cache peeer URLs heartbeat from self: " + message); // }
} // }
return; // }
} // } catch (Throwable t) {
// LOG.error("Multicast receiver thread caught throwable. Cause was " + t.getMessage() + ". Continuing...");
String rmiUrls = new String(message.getBuffer()); // }
if (logger.isDebugEnabled()) // }
{ //
logger.debug("\n" + // private void processPayload(byte[] compressedPayload) {
"Received cache peer URLs heartbeat: \n" + // byte[] payload = PayloadUtil.ungzip(compressedPayload);
" Message: " + message + "\n" + // String rmiUrls = new String(payload);
" Peers: " + rmiUrls); // if (self(rmiUrls)) {
} // return;
// Quickly split them up // }
StringTokenizer tokenizer = new StringTokenizer(rmiUrls, JGroupsKeepAliveHeartbeatSender.URL_DELIMITER, false); // rmiUrls = rmiUrls.trim();
while (!stopped && tokenizer.hasMoreTokens()) // if (LOG.isTraceEnabled()) {
{ // LOG.trace("rmiUrls received " + rmiUrls);
String rmiUrl = tokenizer.nextToken(); // }
// Is it pending? // processRmiUrls(rmiUrls);
if (rmiUrlsProcessingQueue.add(rmiUrl)) // }
{ //
// Not pending. Shedule it. // /**
ProcessingRunnable runnable = new ProcessingRunnable(rmiUrl); // * This method forks a new executor to process the received heartbeat in a thread pool.
threadPool.execute(runnable); // * That way each remote cache manager cannot interfere with others.
} // * <p/>
else // * In the worst case, we have as many concurrent threads as remote cache managers.
{ // *
// It was already waiting to be processed // * @param rmiUrls
// Increase the thread pool size // */
int currentThreadPoolMaxSize = threadPool.getMaximumPoolSize(); // private void processRmiUrls(final String rmiUrls) {
if (currentThreadPoolMaxSize < MAX_THREADS) // if (rmiUrlsProcessingQueue.contains(rmiUrls)) {
{ // if (LOG.isDebugEnabled()) {
threadPool.setMaximumPoolSize(currentThreadPoolMaxSize + 1); // LOG.debug("We are already processing these rmiUrls. Another heartbeat came before we finished: " + rmiUrls);
} // }
} // return;
} // }
} //
// if (processingThreadPool == null) {
/** // return;
* Worker class to go into thread pool // }
* //
* @author Derek Hulley // processingThreadPool.execute(new Runnable() {
*/ // public void run() {
private class ProcessingRunnable implements Runnable // try {
{ // // Add the rmiUrls we are processing.
private String rmiUrl; // rmiUrlsProcessingQueue.add(rmiUrls);
private ProcessingRunnable(String rmiUrl) // for (StringTokenizer stringTokenizer = new StringTokenizer(rmiUrls,
{ // PayloadUtil.URL_DELIMITER); stringTokenizer.hasMoreTokens();) {
this.rmiUrl = rmiUrl; // if (stopped) {
} // return;
public void run() // }
{ // String rmiUrl = stringTokenizer.nextToken();
rmiUrlsProcessingQueue.remove(rmiUrl); // registerNotification(rmiUrl);
if (stopped) // if (!peerProvider.peerUrls.containsKey(rmiUrl)) {
{ // if (LOG.isDebugEnabled()) {
return; // LOG.debug("Aborting processing of rmiUrls since failed to add rmiUrl: " + rmiUrl);
} // }
peerProvider.registerPeer(rmiUrl); // return;
} // }
} // }
// } finally {
@Override // // Remove the rmiUrls we just processed
public void viewAccepted(View newView) // rmiUrlsProcessingQueue.remove(rmiUrls);
{ // }
if (EqualsHelper.nullSafeEquals(lastView, newView)) // }
{ // });
// No change, so ignore // }
return; //
} //
int lastSize = (lastView == null) ? 0 : lastView.getMembers().size(); // /**
int newSize = newView.getMembers().size(); // * @param rmiUrls
// Report // * @return true if our own hostname and listener port are found in the list. This then means we have
if (newSize < lastSize) // * caught our onw multicast, and should be ignored.
{ // */
logger.warn("\n" + // private boolean self(String rmiUrls) {
"New cluster view with fewer members: \n" + // CacheManager cacheManager = peerProvider.getCacheManager();
" Last View: " + lastView + "\n" + // CacheManagerPeerListener cacheManagerPeerListener = cacheManager.getCachePeerListener();
" New View: " + newView); // if (cacheManagerPeerListener == null) {
} // return false;
else // }
{ // List boundCachePeers = cacheManagerPeerListener.getBoundCachePeers();
logger.info("\n" + // if (boundCachePeers == null || boundCachePeers.size() == 0) {
"New cluster view with additional members: \n" + // return false;
" Last View: " + lastView + "\n" + // }
" New View: " + newView); // CachePeer peer = (CachePeer) boundCachePeers.get(0);
} // String cacheManagerUrlBase = null;
lastView = newView; // try {
} // cacheManagerUrlBase = peer.getUrlBase();
// } catch (RemoteException e) {
// LOG.error("Error geting url base");
// }
// int baseUrlMatch = rmiUrls.indexOf(cacheManagerUrlBase);
// return baseUrlMatch != -1;
// }
//
// private void registerNotification(String rmiUrl) {
// peerProvider.registerPeer(rmiUrl);
// }
//
//
// /**
// * {@inheritDoc}
// */
// public final void interrupt() {
// try {
// socket.leaveGroup(groupMulticastAddress);
// } catch (IOException e) {
// LOG.error("Error leaving group");
// }
// socket.close();
// super.interrupt();
// }
// }
//
//
} }