Examples with SNAPSHOT_END_MARKER com.netflix.titus.master.jobmanager.endpoint.v3.grpc.ObserveJobsContext.SNAPSHOT_END_MARKER used on opensource projects

Example 1 with SNAPSHOT_END_MARKER

use of com.netflix.titus.master.jobmanager.endpoint.v3.grpc.ObserveJobsContext.SNAPSHOT_END_MARKER in project titus-control-plane by Netflix.

the class ObserveJobsSubscription method tryInitialize.

private boolean tryInitialize() {
    ObserveJobsQuery query = getLastObserveJobsQueryEvent();
    if (query == null) {
        return false;
    }
    Stopwatch start = Stopwatch.createStarted();
    String trxId = UUID.randomUUID().toString();
    CallMetadata callMetadata = context.getCallMetadataResolver().resolve().orElse(CallMetadataConstants.UNDEFINED_CALL_METADATA);
    metrics.observeJobsStarted(trxId, callMetadata);
    JobQueryCriteria<TaskStatus.TaskState, JobDescriptor.JobSpecCase> criteria = toJobQueryCriteria(query);
    V3JobQueryCriteriaEvaluator jobsPredicate = new V3JobQueryCriteriaEvaluator(criteria, titusRuntime);
    V3TaskQueryCriteriaEvaluator tasksPredicate = new V3TaskQueryCriteriaEvaluator(criteria, titusRuntime);
    Observable<JobChangeNotification> eventStream = context.getJobOperations().observeJobs(jobsPredicate, tasksPredicate, true).filter(event -> withArchived || !event.isArchived()).observeOn(context.getObserveJobsScheduler()).subscribeOn(context.getObserveJobsScheduler(), false).map(event -> GrpcJobManagementModelConverters.toGrpcJobChangeNotification(event, context.getGrpcObjectsCache(), titusRuntime.getClock().wallTime())).compose(ObservableExt.head(() -> {
        List<JobChangeNotification> snapshot = createJobsSnapshot(jobsPredicate, tasksPredicate);
        snapshot.add(SNAPSHOT_END_MARKER);
        return snapshot;
    })).doOnError(e -> logger.error("Unexpected error in jobs event stream", e));
    AtomicBoolean closingProcessed = new AtomicBoolean();
    this.jobServiceSubscription = eventStream.doOnUnsubscribe(() -> {
        if (!closingProcessed.getAndSet(true)) {
            metrics.observeJobsUnsubscribed(trxId, start.elapsed(TimeUnit.MILLISECONDS));
        }
    }).subscribe(event -> {
        metrics.observeJobsEventEmitted(trxId);
        jobServiceEvents.add(event);
        drain();
    }, e -> {
        if (!closingProcessed.getAndSet(true)) {
            metrics.observeJobsError(trxId, start.elapsed(TimeUnit.MILLISECONDS), e);
        }
        jobServiceCompleted = true;
        jobServiceError = new StatusRuntimeException(Status.INTERNAL.withDescription("All jobs monitoring stream terminated with an error").withCause(e));
        drain();
    }, () -> {
        if (!closingProcessed.getAndSet(true)) {
            metrics.observeJobsCompleted(trxId, start.elapsed(TimeUnit.MILLISECONDS));
        }
        jobServiceCompleted = true;
        drain();
    });
    this.grpcStreamInitiated = true;
    return true;
}