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fix for: https://issues.apache.org/jira/browse/AMQ-4274 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1438209 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Timothy A. Bish 2013-01-24 21:38:33 +00:00
parent 6dce677baa
commit 80d0605682
1 changed files with 37 additions and 21 deletions
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50
activemq-client/src/main/java/org/apache/activemq/transport/AbstractInactivityMonitor.java
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@ -74,20 +74,24 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
private final Runnable readChecker = new Runnable() {
long lastRunTime;
@Override
public void run() {
long now = System.currentTimeMillis();
long elapsed = (now-lastRunTime);
long elapsed = (now - lastRunTime);
if( lastRunTime != 0 && LOG.isDebugEnabled() ) {
LOG.debug(""+elapsed+" ms elapsed since last read check.");
if (lastRunTime != 0 && LOG.isDebugEnabled()) {
LOG.debug("" + elapsed + " ms elapsed since last read check.");
}
// Perhaps the timer executed a read check late.. and then executes
// the next read check on time which causes the time elapsed between
// read checks to be small..
// If less than 90% of the read check Time elapsed then abort this readcheck.
if( !allowReadCheck(elapsed) ) { // FUNKY qdox bug does not allow me to inline this expression.
// If less than 90% of the read check Time elapsed then abort this
// readcheck.
if (!allowReadCheck(elapsed)) { // FUNKY qdox bug does not allow me
// to inline this expression.
LOG.debug("Aborting read check.. Not enough time elapsed since last read check.");
return;
}
@ -109,6 +113,7 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
private final Runnable writeChecker = new Runnable() {
long lastRunTime;
@Override
public void run() {
long now = System.currentTimeMillis();
if (lastRunTime != 0 && LOG.isDebugEnabled()) {
@ -130,11 +135,13 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
this.wireFormat = wireFormat;
}
@Override
public void start() throws Exception {
next.start();
startMonitorThreads();
}
@Override
public void stop() throws Exception {
stopMonitorThreads();
next.stop();
@ -148,8 +155,7 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
return;
}
if (!commandSent.get() && useKeepAlive && monitorStarted.get() &&
!ASYNC_TASKS.isTerminating() && !ASYNC_TASKS.isTerminated()) {
if (!commandSent.get() && useKeepAlive && monitorStarted.get() && !ASYNC_TASKS.isTerminating() && !ASYNC_TASKS.isTerminated()) {
if (LOG.isTraceEnabled()) {
LOG.trace(this + " no message sent since last write check, sending a KeepAliveInfo");
@ -157,13 +163,15 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
try {
ASYNC_TASKS.execute(new Runnable() {
@Override
public void run() {
if (LOG.isDebugEnabled()) {
LOG.debug("Running {}", this);
}
if (monitorStarted.get()) {
try {
// If we can't get the lock it means another write beat us into the
// If we can't get the lock it means another
// write beat us into the
// send and we don't need to heart beat now.
if (sendLock.writeLock().tryLock()) {
KeepAliveInfo info = new KeepAliveInfo();
@ -203,14 +211,13 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
final void readCheck() {
int currentCounter = next.getReceiveCounter();
int previousCounter = lastReceiveCounter.getAndSet(currentCounter);
if (inReceive.get() || currentCounter!=previousCounter ) {
if (inReceive.get() || currentCounter != previousCounter) {
if (LOG.isTraceEnabled()) {
LOG.trace("A receive is in progress");
}
return;
}
if (!commandReceived.get() && monitorStarted.get() &&
!ASYNC_TASKS.isTerminating() && !ASYNC_TASKS.isTerminated()) {
if (!commandReceived.get() && monitorStarted.get() && !ASYNC_TASKS.isTerminating() && !ASYNC_TASKS.isTerminated()) {
if (LOG.isDebugEnabled()) {
LOG.debug("No message received since last read check for " + toString() + ". Throwing InactivityIOException.");
@ -218,11 +225,12 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
try {
ASYNC_TASKS.execute(new Runnable() {
@Override
public void run() {
if (LOG.isDebugEnabled()) {
LOG.debug("Running {}", this);
}
onException(new InactivityIOException("Channel was inactive for too (>" + readCheckTime + ") long: "+next.getRemoteAddress()));
onException(new InactivityIOException("Channel was inactive for too (>" + readCheckTime + ") long: " + next.getRemoteAddress()));
}
@Override
@ -245,8 +253,10 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
}
protected abstract void processInboundWireFormatInfo(WireFormatInfo info) throws IOException;
protected abstract void processOutboundWireFormatInfo(WireFormatInfo info) throws IOException;
@Override
public void onCommand(Object command) {
commandReceived.set(true);
inReceive.set(true);
@ -282,6 +292,7 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
}
}
@Override
public void oneway(Object o) throws IOException {
// To prevent the inactivity monitor from sending a message while we
// are performing a send we take a read lock. The inactivity monitor
@ -311,9 +322,13 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
next.oneway(command);
}
@Override
public void onException(IOException error) {
if (failed.compareAndSet(false, true)) {
stopMonitorThreads();
if (sendLock.writeLock().isHeldByCurrentThread()) {
sendLock.writeLock().unlock();
}
transportListener.onException(error);
}
}
@ -377,11 +392,11 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
if (writeCheckTime > 0 || readCheckTime > 0) {
monitorStarted.set(true);
synchronized(AbstractInactivityMonitor.class) {
if( CHECKER_COUNTER == 0 ) {
synchronized (AbstractInactivityMonitor.class) {
if (CHECKER_COUNTER == 0) {
ASYNC_TASKS = createExecutor();
READ_CHECK_TIMER = new Timer("ActiveMQ InactivityMonitor ReadCheckTimer",true);
WRITE_CHECK_TIMER = new Timer("ActiveMQ InactivityMonitor WriteCheckTimer",true);
READ_CHECK_TIMER = new Timer("ActiveMQ InactivityMonitor ReadCheckTimer", true);
WRITE_CHECK_TIMER = new Timer("ActiveMQ InactivityMonitor WriteCheckTimer", true);
}
CHECKER_COUNTER++;
if (readCheckTime > 0) {
@ -419,7 +434,8 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
}
}
private ThreadFactory factory = new ThreadFactory() {
private final ThreadFactory factory = new ThreadFactory() {
@Override
public Thread newThread(Runnable runnable) {
Thread thread = new Thread(runnable, "ActiveMQ InactivityMonitor Worker");
thread.setDaemon(true);