Examples with ControllerEventProcessors io.pravega.controller.server.eventProcessor.ControllerEventProcessors used on opensource projects

Example 1 with ControllerEventProcessors

use of io.pravega.controller.server.eventProcessor.ControllerEventProcessors in project pravega by pravega.

the class ControllerServiceStarter method startUp.

@Override
protected void startUp() {
    long traceId = LoggerHelpers.traceEnterWithContext(log, this.objectId, "startUp");
    log.info("Initiating controller service startUp");
    log.info("Event processors enabled = {}", serviceConfig.getEventProcessorConfig().isPresent());
    log.info("Cluster listener enabled = {}", serviceConfig.isControllerClusterListenerEnabled());
    log.info("    Host monitor enabled = {}", serviceConfig.getHostMonitorConfig().isHostMonitorEnabled());
    log.info("     gRPC server enabled = {}", serviceConfig.getGRPCServerConfig().isPresent());
    log.info("     REST server enabled = {}", serviceConfig.getRestServerConfig().isPresent());
    final StreamMetadataStore streamStore;
    final TaskMetadataStore taskMetadataStore;
    final HostControllerStore hostStore;
    final CheckpointStore checkpointStore;
    try {
        // Initialize the executor service.
        controllerExecutor = ExecutorServiceHelpers.newScheduledThreadPool(serviceConfig.getThreadPoolSize(), "controllerpool");
        retentionExecutor = ExecutorServiceHelpers.newScheduledThreadPool(Config.RETENTION_THREAD_POOL_SIZE, "retentionpool");
        log.info("Creating the stream store");
        streamStore = StreamStoreFactory.createStore(storeClient, controllerExecutor);
        log.info("Creating the task store");
        taskMetadataStore = TaskStoreFactory.createStore(storeClient, controllerExecutor);
        log.info("Creating the host store");
        hostStore = HostStoreFactory.createStore(serviceConfig.getHostMonitorConfig(), storeClient);
        log.info("Creating the checkpoint store");
        checkpointStore = CheckpointStoreFactory.create(storeClient);
        // On each controller process restart, we use a fresh hostId,
        // which is a combination of hostname and random GUID.
        String hostName = getHostName();
        Host host = new Host(hostName, getPort(), UUID.randomUUID().toString());
        if (serviceConfig.getHostMonitorConfig().isHostMonitorEnabled()) {
            // Start the Segment Container Monitor.
            monitor = new SegmentContainerMonitor(hostStore, (CuratorFramework) storeClient.getClient(), new UniformContainerBalancer(), serviceConfig.getHostMonitorConfig().getHostMonitorMinRebalanceInterval());
            log.info("Starting segment container monitor");
            monitor.startAsync();
        }
        ClientConfig clientConfig = ClientConfig.builder().controllerURI(URI.create((serviceConfig.getGRPCServerConfig().get().isTlsEnabled() ? "tls://" : "tcp://") + "localhost")).trustStore(serviceConfig.getGRPCServerConfig().get().getTlsTrustStore()).validateHostName(false).build();
        connectionFactory = new ConnectionFactoryImpl(clientConfig);
        SegmentHelper segmentHelper = new SegmentHelper();
        streamMetadataTasks = new StreamMetadataTasks(streamStore, hostStore, taskMetadataStore, segmentHelper, controllerExecutor, host.getHostId(), connectionFactory, serviceConfig.getGRPCServerConfig().get().isAuthorizationEnabled(), serviceConfig.getGRPCServerConfig().get().getTokenSigningKey());
        streamTransactionMetadataTasks = new StreamTransactionMetadataTasks(streamStore, hostStore, segmentHelper, controllerExecutor, host.getHostId(), serviceConfig.getTimeoutServiceConfig(), connectionFactory, serviceConfig.getGRPCServerConfig().get().isAuthorizationEnabled(), serviceConfig.getGRPCServerConfig().get().getTokenSigningKey());
        streamCutService = new StreamCutService(Config.BUCKET_COUNT, host.getHostId(), streamStore, streamMetadataTasks, retentionExecutor);
        log.info("starting auto retention service asynchronously");
        streamCutService.startAsync();
        streamCutService.awaitRunning();
        // Controller has a mechanism to track the currently active controller host instances. On detecting a failure of
        // any controller instance, the failure detector stores the failed HostId in a failed hosts directory (FH), and
        // invokes the taskSweeper.sweepOrphanedTasks for each failed host. When all resources under the failed hostId
        // are processed and deleted, that failed HostId is removed from FH folder.
        // Moreover, on controller process startup, it detects any hostIds not in the currently active set of
        // controllers and starts sweeping tasks orphaned by those hostIds.
        TaskSweeper taskSweeper = new TaskSweeper(taskMetadataStore, host.getHostId(), controllerExecutor, streamMetadataTasks);
        TxnSweeper txnSweeper = new TxnSweeper(streamStore, streamTransactionMetadataTasks, serviceConfig.getTimeoutServiceConfig().getMaxLeaseValue(), controllerExecutor);
        if (serviceConfig.isControllerClusterListenerEnabled()) {
            cluster = new ClusterZKImpl((CuratorFramework) storeClient.getClient(), ClusterType.CONTROLLER);
        }
        controllerService = new ControllerService(streamStore, hostStore, streamMetadataTasks, streamTransactionMetadataTasks, new SegmentHelper(), controllerExecutor, cluster);
        // Setup event processors.
        setController(new LocalController(controllerService, serviceConfig.getGRPCServerConfig().get().isAuthorizationEnabled(), serviceConfig.getGRPCServerConfig().get().getTokenSigningKey()));
        if (serviceConfig.getEventProcessorConfig().isPresent()) {
            // Create ControllerEventProcessor object.
            controllerEventProcessors = new ControllerEventProcessors(host.getHostId(), serviceConfig.getEventProcessorConfig().get(), localController, checkpointStore, streamStore, hostStore, segmentHelper, connectionFactory, streamMetadataTasks, controllerExecutor);
            // Bootstrap and start it asynchronously.
            log.info("Starting event processors");
            controllerEventProcessors.bootstrap(streamTransactionMetadataTasks, streamMetadataTasks).thenAcceptAsync(x -> controllerEventProcessors.startAsync(), controllerExecutor);
        }
        // Setup and start controller cluster listener after all sweepers have been initialized.
        if (serviceConfig.isControllerClusterListenerEnabled()) {
            List<FailoverSweeper> failoverSweepers = new ArrayList<>();
            failoverSweepers.add(taskSweeper);
            failoverSweepers.add(txnSweeper);
            if (serviceConfig.getEventProcessorConfig().isPresent()) {
                assert controllerEventProcessors != null;
                failoverSweepers.add(controllerEventProcessors);
            }
            controllerClusterListener = new ControllerClusterListener(host, cluster, controllerExecutor, failoverSweepers);
            log.info("Starting controller cluster listener");
            controllerClusterListener.startAsync();
        }
        // Start RPC server.
        if (serviceConfig.getGRPCServerConfig().isPresent()) {
            grpcServer = new GRPCServer(controllerService, serviceConfig.getGRPCServerConfig().get());
            grpcServer.startAsync();
            log.info("Awaiting start of rpc server");
            grpcServer.awaitRunning();
        }
        // Start REST server.
        if (serviceConfig.getRestServerConfig().isPresent()) {
            restServer = new RESTServer(this.localController, controllerService, grpcServer.getPravegaAuthManager(), serviceConfig.getRestServerConfig().get(), connectionFactory);
            restServer.startAsync();
            log.info("Awaiting start of REST server");
            restServer.awaitRunning();
        }
        // Wait for controller event processors to start.
        if (serviceConfig.getEventProcessorConfig().isPresent()) {
            log.info("Awaiting start of controller event processors");
            controllerEventProcessors.awaitRunning();
        }
        // Wait for controller cluster listeners to start.
        if (serviceConfig.isControllerClusterListenerEnabled()) {
            log.info("Awaiting start of controller cluster listener");
            controllerClusterListener.awaitRunning();
        }
    } finally {
        LoggerHelpers.traceLeave(log, this.objectId, "startUp", traceId);
    }
}