Examples with ClientRequestTracker org.opendaylight.controller.cluster.raft.ClientRequestTracker used on opensource projects

Example 1 with ClientRequestTracker

use of org.opendaylight.controller.cluster.raft.ClientRequestTracker in project controller by opendaylight.

the class AbstractRaftActorBehavior method applyLogToStateMachine.

/**
 * Applies the log entries up to the specified index that is known to be committed to the state machine.
 *
 * @param index the log index
 */
protected void applyLogToStateMachine(final long index) {
    // Now maybe we apply to the state machine
    for (long i = context.getLastApplied() + 1; i < index + 1; i++) {
        ReplicatedLogEntry replicatedLogEntry = context.getReplicatedLog().get(i);
        if (replicatedLogEntry != null) {
            // Send a local message to the local RaftActor (it's derived class to be
            // specific to apply the log to it's index)
            final ApplyState applyState;
            final ClientRequestTracker tracker = removeClientRequestTracker(i);
            if (tracker != null) {
                applyState = new ApplyState(tracker.getClientActor(), tracker.getIdentifier(), replicatedLogEntry);
            } else {
                applyState = new ApplyState(null, null, replicatedLogEntry);
            }
            log.debug("{}: Setting last applied to {}", logName(), i);
            context.setLastApplied(i);
            context.getApplyStateConsumer().accept(applyState);
        } else {
            // if one index is not present in the log, no point in looping
            // around as the rest wont be present either
            log.warn("{}: Missing index {} from log. Cannot apply state. Ignoring {} to {}", logName(), i, i, index);
            break;
        }
    }
    // send a message to persist a ApplyLogEntries marker message into akka's persistent journal
    // will be used during recovery
    // in case if the above code throws an error and this message is not sent, it would be fine
    // as the  append entries received later would initiate add this message to the journal
    actor().tell(new ApplyJournalEntries(context.getLastApplied()), actor());
}