Response resp;
try {
resp = handleInternal(cmd, cr);
} catch (RetryPrepareException retry) {
log.debugf(retry, "Prepare [%s] conflicted with state transfer", cmd);
resp = new ExceptionResponse(retry);
} catch (Throwable throwable) {
log.exceptionHandlingCommand(cmd, throwable);
resp = new ExceptionResponse(new CacheException("Problems invoking command.", throwable));
}
//the ResponseGenerated is null in this case because the return value is a Response
reply(response, resp);
if (resp instanceof ExceptionResponse) {
totalOrderManager.release(state);
}
afterResponseSent(cmd, resp);
}
});
} else {
final StateTransferLock stateTransferLock = cr.getStateTransferLock();
// Command topology id -1 means the command is not topology-aware
final int commandTopologyId = extractCommandTopologyId(cmd);
// Always wait for the first topology (i.e. for the join to finish)
final int waitTopologyId = Math.max(commandTopologyId, 0);
if (!preserveOrder && cmd.canBlock()) {
remoteCommandsExecutor.execute(new BlockingRunnable() {
@Override
public boolean isReady() {
return stateTransferLock.transactionDataReceived(waitTopologyId);
}
@Override
public void run() {
if (0 <= commandTopologyId && commandTopologyId < stm.getFirstTopologyAsMember()) {
if (trace) log.tracef("Ignoring command sent before the local node was a member " +
"(command topology id is %d)", commandTopologyId);
reply(response, null);
return;
}
Response resp;
try {
resp = handleInternal(cmd, cr);
} catch (Throwable throwable) {
log.exceptionHandlingCommand(cmd, throwable);
resp = new ExceptionResponse(new CacheException("Problems invoking command.", throwable));
}
reply(response, resp);
afterResponseSent(cmd, resp);
}
});