mirror of https://github.com/apache/activemq.git
Further enhancement for https://issues.apache.org/activemq/browse/AMQ-1572
git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@616733 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Davies
parent
e210657db2
commit
418823a7e1
|
|
@ -132,7 +132,7 @@ public interface Transport extends Service {
|
|||
/**
|
||||
* Indicates if the transport can handle faults
|
||||
*
|
||||
* @return tru if fault tolerant
|
||||
* @return true if fault tolerant
|
||||
*/
|
||||
boolean isFaultTolerant();
|
||||
|
||||
|
|
|
|||
|
|
@ -83,8 +83,8 @@ public class FailoverTransport implements CompositeTransport {
|
|||
private boolean firstConnection = true;
|
||||
//optionally always have a backup created
|
||||
private boolean backup=false;
|
||||
private URI backupTransportURI;
|
||||
private Transport backupTransport;
|
||||
private List<BackupTransport> backups=new CopyOnWriteArrayList<BackupTransport>();
|
||||
private int backupPoolSize=2;
|
||||
|
||||
|
||||
private final TransportListener myTransportListener = createTransportListener();
|
||||
|
|
@ -95,127 +95,12 @@ public class FailoverTransport implements CompositeTransport {
|
|||
|
||||
// Setup a task that is used to reconnect the a connection async.
|
||||
reconnectTask = DefaultThreadPools.getDefaultTaskRunnerFactory().createTaskRunner(new Task() {
|
||||
|
||||
public boolean iterate() {
|
||||
|
||||
Exception failure = null;
|
||||
synchronized (reconnectMutex) {
|
||||
|
||||
if (disposed || connectionFailure != null) {
|
||||
reconnectMutex.notifyAll();
|
||||
boolean result = doReconnect();
|
||||
if(!result) {
|
||||
buildBackups();
|
||||
}
|
||||
|
||||
if (connectedTransport != null || disposed || connectionFailure != null) {
|
||||
return false;
|
||||
} else {
|
||||
List<URI> connectList = getConnectList();
|
||||
if (connectList.isEmpty()) {
|
||||
failure = new IOException("No uris available to connect to.");
|
||||
} else {
|
||||
if (!useExponentialBackOff) {
|
||||
reconnectDelay = initialReconnectDelay;
|
||||
}
|
||||
if (backup && backupTransport != null) {
|
||||
Transport t = backupTransport;
|
||||
URI uri = backupTransportURI;
|
||||
backupTransport=null;
|
||||
backupTransportURI=null;
|
||||
t.setTransportListener(myTransportListener);
|
||||
try {
|
||||
if (started) {
|
||||
restoreTransport(t);
|
||||
}
|
||||
reconnectDelay = initialReconnectDelay;
|
||||
connectedTransportURI = uri;
|
||||
connectedTransport = t;
|
||||
reconnectMutex.notifyAll();
|
||||
connectFailures = 0;
|
||||
LOG.info("Successfully reconnected to backup " + uri);
|
||||
return false;
|
||||
}catch (Exception e) {
|
||||
LOG.debug("Backup transport failed",e);
|
||||
}
|
||||
}
|
||||
|
||||
Iterator<URI> iter = connectList.iterator();
|
||||
while(iter.hasNext() && connectedTransport == null && !disposed) {
|
||||
URI uri = iter.next();
|
||||
try {
|
||||
LOG.debug("Attempting connect to: " + uri);
|
||||
Transport t = TransportFactory.compositeConnect(uri);
|
||||
t.setTransportListener(myTransportListener);
|
||||
t.start();
|
||||
|
||||
if (started) {
|
||||
restoreTransport(t);
|
||||
}
|
||||
|
||||
LOG.debug("Connection established");
|
||||
reconnectDelay = initialReconnectDelay;
|
||||
connectedTransportURI = uri;
|
||||
connectedTransport = t;
|
||||
reconnectMutex.notifyAll();
|
||||
connectFailures = 0;
|
||||
if (transportListener != null) {
|
||||
transportListener.transportResumed();
|
||||
}
|
||||
if (firstConnection) {
|
||||
firstConnection=false;
|
||||
LOG.info("Successfully connected to " + uri);
|
||||
if(backup) {
|
||||
while(iter.hasNext() && backupTransport==null){
|
||||
uri = iter.next();
|
||||
try {
|
||||
t = TransportFactory.compositeConnect(uri);
|
||||
t.setTransportListener(new DefaultTransportListener());
|
||||
t.start();
|
||||
backupTransport=t;
|
||||
backupTransportURI=uri;
|
||||
}catch(Exception e) {
|
||||
LOG.debug("Failed to create backup to " + uri,e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}else {
|
||||
LOG.info("Successfully reconnected to " + uri);
|
||||
}
|
||||
return false;
|
||||
} catch (Exception e) {
|
||||
failure = e;
|
||||
LOG.debug("Connect fail to: " + uri + ", reason: " + e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (maxReconnectAttempts > 0 && ++connectFailures >= maxReconnectAttempts) {
|
||||
LOG.error("Failed to connect to transport after: " + connectFailures + " attempt(s)");
|
||||
connectionFailure = failure;
|
||||
reconnectMutex.notifyAll();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (!disposed) {
|
||||
|
||||
LOG.debug("Waiting " + reconnectDelay + " ms before attempting connection. ");
|
||||
synchronized (sleepMutex) {
|
||||
try {
|
||||
sleepMutex.wait(reconnectDelay);
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
}
|
||||
}
|
||||
|
||||
if (useExponentialBackOff) {
|
||||
// Exponential increment of reconnect delay.
|
||||
reconnectDelay *= backOffMultiplier;
|
||||
if (reconnectDelay > maxReconnectDelay) {
|
||||
reconnectDelay = maxReconnectDelay;
|
||||
}
|
||||
}
|
||||
}
|
||||
return !disposed;
|
||||
return result;
|
||||
}
|
||||
|
||||
}, "ActiveMQ Failover Worker: " + System.identityHashCode(this));
|
||||
|
|
@ -395,6 +280,22 @@ public class FailoverTransport implements CompositeTransport {
|
|||
this.randomize = randomize;
|
||||
}
|
||||
|
||||
public boolean isBackup() {
|
||||
return backup;
|
||||
}
|
||||
|
||||
public void setBackup(boolean backup) {
|
||||
this.backup = backup;
|
||||
}
|
||||
|
||||
public int getBackupPoolSize() {
|
||||
return backupPoolSize;
|
||||
}
|
||||
|
||||
public void setBackupPoolSize(int backupPoolSize) {
|
||||
this.backupPoolSize = backupPoolSize;
|
||||
}
|
||||
|
||||
public void oneway(Object o) throws IOException {
|
||||
Command command = (Command)o;
|
||||
Exception error = null;
|
||||
|
|
@ -614,4 +515,141 @@ public class FailoverTransport implements CompositeTransport {
|
|||
return true;
|
||||
}
|
||||
|
||||
final boolean doReconnect() {
|
||||
|
||||
Exception failure = null;
|
||||
synchronized (reconnectMutex) {
|
||||
|
||||
if (disposed || connectionFailure != null) {
|
||||
reconnectMutex.notifyAll();
|
||||
}
|
||||
|
||||
if (connectedTransport != null || disposed || connectionFailure != null) {
|
||||
return false;
|
||||
} else {
|
||||
List<URI> connectList = getConnectList();
|
||||
if (connectList.isEmpty()) {
|
||||
failure = new IOException("No uris available to connect to.");
|
||||
} else {
|
||||
if (!useExponentialBackOff) {
|
||||
reconnectDelay = initialReconnectDelay;
|
||||
}
|
||||
if (backup && !backups.isEmpty()) {
|
||||
BackupTransport bt = backups.remove(0);
|
||||
Transport t = bt.getTransport();
|
||||
URI uri = bt.getUri();
|
||||
t.setTransportListener(myTransportListener);
|
||||
try {
|
||||
if (started) {
|
||||
restoreTransport(t);
|
||||
}
|
||||
reconnectDelay = initialReconnectDelay;
|
||||
connectedTransportURI = uri;
|
||||
connectedTransport = t;
|
||||
reconnectMutex.notifyAll();
|
||||
connectFailures = 0;
|
||||
LOG.info("Successfully reconnected to backup " + uri);
|
||||
return false;
|
||||
}catch (Exception e) {
|
||||
LOG.debug("Backup transport failed",e);
|
||||
}
|
||||
}
|
||||
|
||||
Iterator<URI> iter = connectList.iterator();
|
||||
while(iter.hasNext() && connectedTransport == null && !disposed) {
|
||||
URI uri = iter.next();
|
||||
try {
|
||||
LOG.debug("Attempting connect to: " + uri);
|
||||
Transport t = TransportFactory.compositeConnect(uri);
|
||||
t.setTransportListener(myTransportListener);
|
||||
t.start();
|
||||
|
||||
if (started) {
|
||||
restoreTransport(t);
|
||||
}
|
||||
|
||||
LOG.debug("Connection established");
|
||||
reconnectDelay = initialReconnectDelay;
|
||||
connectedTransportURI = uri;
|
||||
connectedTransport = t;
|
||||
reconnectMutex.notifyAll();
|
||||
connectFailures = 0;
|
||||
if (transportListener != null) {
|
||||
transportListener.transportResumed();
|
||||
}
|
||||
if (firstConnection) {
|
||||
firstConnection=false;
|
||||
LOG.info("Successfully connected to " + uri);
|
||||
}else {
|
||||
LOG.info("Successfully reconnected to " + uri);
|
||||
}
|
||||
return false;
|
||||
} catch (Exception e) {
|
||||
failure = e;
|
||||
LOG.debug("Connect fail to: " + uri + ", reason: " + e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (maxReconnectAttempts > 0 && ++connectFailures >= maxReconnectAttempts) {
|
||||
LOG.error("Failed to connect to transport after: " + connectFailures + " attempt(s)");
|
||||
connectionFailure = failure;
|
||||
reconnectMutex.notifyAll();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (!disposed) {
|
||||
|
||||
LOG.debug("Waiting " + reconnectDelay + " ms before attempting connection. ");
|
||||
synchronized (sleepMutex) {
|
||||
try {
|
||||
sleepMutex.wait(reconnectDelay);
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
}
|
||||
}
|
||||
|
||||
if (useExponentialBackOff) {
|
||||
// Exponential increment of reconnect delay.
|
||||
reconnectDelay *= backOffMultiplier;
|
||||
if (reconnectDelay > maxReconnectDelay) {
|
||||
reconnectDelay = maxReconnectDelay;
|
||||
}
|
||||
}
|
||||
}
|
||||
return !disposed;
|
||||
}
|
||||
|
||||
|
||||
final boolean buildBackups() {
|
||||
synchronized (reconnectMutex) {
|
||||
if (backup && backups.size() < backupPoolSize) {
|
||||
List<URI> connectList = getConnectList();
|
||||
for (Iterator<URI>iter = connectList.iterator();iter.hasNext() && backups.size() < backupPoolSize;) {
|
||||
URI uri = iter.next();
|
||||
if (connectedTransportURI != null && !connectedTransportURI.equals(uri)) {
|
||||
try {
|
||||
BackupTransport bt = new BackupTransport();
|
||||
bt.setUri(uri);
|
||||
if (!backups.contains(bt)) {
|
||||
Transport t = TransportFactory.compositeConnect(uri);
|
||||
t.setTransportListener(new DefaultTransportListener());
|
||||
t.start();
|
||||
bt.setTransport(t);
|
||||
backups.add(bt);
|
||||
}
|
||||
}catch(Exception e) {
|
||||
LOG.debug("Failed to build backup ",e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue