protected void getState(Address target, long timeout, Callable<Boolean> flushInvoker)
throws Exception {
checkClosedOrNotConnected();
if (!state_transfer_supported)
throw new IllegalStateException(
"fetching state will fail as state transfer is not supported. "
+ "Add one of the state transfer protocols to your configuration");
if (target == null) target = determineCoordinator();
if (target != null && local_addr != null && target.equals(local_addr)) {
log.trace(
local_addr
+ ": cannot get state from myself ("
+ target
+ "): probably the first member");
return;
}
boolean initiateFlush = flushSupported() && flushInvoker != null;
if (initiateFlush) {
boolean successfulFlush = false;
try {
successfulFlush = flushInvoker.call();
} catch (Throwable e) {
successfulFlush = false; // http://jira.jboss.com/jira/browse/JGRP-759
}
if (!successfulFlush)
throw new IllegalStateException(
"Node " + local_addr + " could not flush the cluster for state retrieval");
}
state_promise.reset();
StateTransferInfo state_info = new StateTransferInfo(target, timeout);
long start = System.currentTimeMillis();
down(new Event(Event.GET_STATE, state_info));
StateTransferResult result = state_promise.getResult(state_info.timeout);
if (initiateFlush) stopFlush();
if (result == null)
throw new StateTransferException(
"timeout during state transfer (" + (System.currentTimeMillis() - start) + "ms)");
if (result.hasException())
throw new StateTransferException("state transfer failed", result.getException());
}
public void send(Message msg) throws Exception {
checkClosedOrNotConnected();
if (msg == null) throw new NullPointerException("msg is null");
down(new Event(Event.MSG, msg));
}