/**
* Stop Cluster and implement the requirements of {@link
* org.apache.catalina.util.LifecycleBase#stopInternal()}.
*
* @exception LifecycleException if this component detects a fatal error that prevents this
* component from being used
*/
@Override
protected void stopInternal() throws LifecycleException {
setState(LifecycleState.STOPPING);
unregisterMember(channel.getLocalMember(false));
if (clusterDeployer != null) clusterDeployer.stop();
this.managers.clear();
try {
if (clusterDeployer != null) clusterDeployer.setCluster(null);
channel.stop(channelStartOptions);
channel.removeChannelListener(this);
channel.removeMembershipListener(this);
this.unregisterClusterValve();
} catch (Exception x) {
log.error(sm.getString("simpleTcpCluster.stopUnable"), x);
}
}
/**
* Execute a periodic task, such as reloading, etc. This method will be invoked inside the
* classloading context of this container. Unexpected throwables will be caught and logged.
*
* @see org.apache.catalina.ha.deploy.FarmWarDeployer#backgroundProcess()
* @see org.apache.catalina.tribes.group.GroupChannel#heartbeat()
* @see org.apache.catalina.tribes.group.GroupChannel.HeartbeatThread#run()
*/
@Override
public void backgroundProcess() {
if (clusterDeployer != null) clusterDeployer.backgroundProcess();
// send a heartbeat through the channel
if (isHeartbeatBackgroundEnabled() && channel != null) channel.heartbeat();
// periodic event
fireLifecycleEvent(Lifecycle.PERIODIC_EVENT, null);
}
protected void checkDefaults() {
if (clusterListeners.size() == 0) {
addClusterListener(new ClusterSessionListener());
}
if (valves.size() == 0) {
addValve(new JvmRouteBinderValve());
addValve(new ReplicationValve());
}
if (clusterDeployer != null) clusterDeployer.setCluster(this);
if (channel == null) channel = new GroupChannel();
if (channel instanceof GroupChannel && !((GroupChannel) channel).getInterceptors().hasNext()) {
channel.addInterceptor(new MessageDispatch15Interceptor());
channel.addInterceptor(new TcpFailureDetector());
}
}
/**
* Start Cluster and implement the requirements of {@link
* org.apache.catalina.util.LifecycleBase#startInternal()}.
*
* @exception LifecycleException if this component detects a fatal error that prevents this
* component from being used
*/
@Override
protected void startInternal() throws LifecycleException {
if (log.isInfoEnabled()) log.info(sm.getString("simpleTcpCluster.start"));
try {
checkDefaults();
registerClusterValve();
channel.addMembershipListener(this);
channel.addChannelListener(this);
channel.start(channelStartOptions);
if (clusterDeployer != null) clusterDeployer.start();
registerMember(channel.getLocalMember(false));
} catch (Exception x) {
log.error(sm.getString("simpleTcpCluster.startUnable"), x);
throw new LifecycleException(x);
}
setState(LifecycleState.STARTING);
}