/**
* Prepare for the beginning of active use of the public methods of this component. This method
* should be called after <code>configure()</code>, and before any of the public methods of the
* component are utilized.<br>
* Starts the cluster communication channel, this will connect with the other nodes in the
* cluster, and request the current session state to be transferred to this node.
*
* @exception IllegalStateException if this component has already been started
* @exception LifecycleException if this component detects a fatal error that prevents this
* component from being used
*/
public void start() throws LifecycleException {
mManagerRunning = true;
super.start();
try {
// the channel is already running
if (mChannelStarted) return;
if (log.isInfoEnabled()) log.info("Starting clustering manager...:" + getName());
if (cluster == null) {
log.error("Starting... no cluster associated with this context:" + getName());
return;
}
cluster.registerManager(this);
if (cluster.getMembers().length > 0) {
Member mbr = cluster.getMembers()[0];
SessionMessage msg =
new SessionMessageImpl(
this.getName(),
SessionMessage.EVT_GET_ALL_SESSIONS,
null,
"GET-ALL",
"GET-ALL-" + this.getName());
cluster.send(msg, mbr);
if (log.isWarnEnabled())
log.warn(
"Manager["
+ getName()
+ "], requesting session state from "
+ mbr
+ ". This operation will timeout if no session state has been received within "
+ "60 seconds");
long reqStart = System.currentTimeMillis();
long reqNow = 0;
boolean isTimeout = false;
do {
try {
Thread.sleep(100);
} catch (Exception sleep) {
}
reqNow = System.currentTimeMillis();
isTimeout = ((reqNow - reqStart) > (1000 * 60));
} while ((!isStateTransferred()) && (!isTimeout));
if (isTimeout || (!isStateTransferred())) {
log.error("Manager[" + getName() + "], No session state received, timing out.");
} else {
if (log.isInfoEnabled())
log.info(
"Manager["
+ getName()
+ "], session state received in "
+ (reqNow - reqStart)
+ " ms.");
}
} else {
if (log.isInfoEnabled())
log.info(
"Manager["
+ getName()
+ "], skipping state transfer. No members active in cluster group.");
} // end if
mChannelStarted = true;
} catch (Exception x) {
log.error("Unable to start SimpleTcpReplicationManager", x);
}
}
