Examples with ReportingTaskLogObserver org.apache.nifi.logging.ReportingTaskLogObserver used on opensource projects

Example 1 with ReportingTaskLogObserver

use of org.apache.nifi.logging.ReportingTaskLogObserver in project nifi by apache.

the class FlowController method createReportingTask.

public ReportingTaskNode createReportingTask(final String type, final String id, final BundleCoordinate bundleCoordinate, final Set<URL> additionalUrls, final boolean firstTimeAdded, final boolean register) throws ReportingTaskInstantiationException {
    if (type == null || id == null || bundleCoordinate == null) {
        throw new NullPointerException();
    }
    LoggableComponent<ReportingTask> task = null;
    boolean creationSuccessful = true;
    try {
        task = instantiateReportingTask(type, id, bundleCoordinate, additionalUrls);
    } catch (final Exception e) {
        LOG.error("Could not create Reporting Task of type " + type + " for ID " + id + "; creating \"Ghost\" implementation", e);
        final GhostReportingTask ghostTask = new GhostReportingTask();
        ghostTask.setIdentifier(id);
        ghostTask.setCanonicalClassName(type);
        task = new LoggableComponent<>(ghostTask, bundleCoordinate, null);
        creationSuccessful = false;
    }
    final ComponentVariableRegistry componentVarRegistry = new StandardComponentVariableRegistry(this.variableRegistry);
    final ValidationContextFactory validationContextFactory = new StandardValidationContextFactory(controllerServiceProvider, componentVarRegistry);
    final ReportingTaskNode taskNode;
    if (creationSuccessful) {
        taskNode = new StandardReportingTaskNode(task, id, this, processScheduler, validationContextFactory, componentVarRegistry, this);
    } else {
        final String simpleClassName = type.contains(".") ? StringUtils.substringAfterLast(type, ".") : type;
        final String componentType = "(Missing) " + simpleClassName;
        taskNode = new StandardReportingTaskNode(task, id, this, processScheduler, validationContextFactory, componentType, type, componentVarRegistry, this, true);
    }
    taskNode.setName(taskNode.getReportingTask().getClass().getSimpleName());
    if (firstTimeAdded) {
        final ReportingInitializationContext config = new StandardReportingInitializationContext(id, taskNode.getName(), SchedulingStrategy.TIMER_DRIVEN, "1 min", taskNode.getLogger(), this, nifiProperties, this);
        try {
            taskNode.getReportingTask().initialize(config);
        } catch (final InitializationException ie) {
            throw new ReportingTaskInstantiationException("Failed to initialize reporting task of type " + type, ie);
        }
        try (final NarCloseable x = NarCloseable.withComponentNarLoader(taskNode.getReportingTask().getClass(), taskNode.getReportingTask().getIdentifier())) {
            ReflectionUtils.invokeMethodsWithAnnotation(OnAdded.class, taskNode.getReportingTask());
            ReflectionUtils.quietlyInvokeMethodsWithAnnotation(OnConfigurationRestored.class, taskNode.getReportingTask());
        } catch (final Exception e) {
            throw new ComponentLifeCycleException("Failed to invoke On-Added Lifecycle methods of " + taskNode.getReportingTask(), e);
        }
    }
    if (register) {
        reportingTasks.put(id, taskNode);
        // Register log observer to provide bulletins when reporting task logs anything at WARN level or above
        final LogRepository logRepository = LogRepositoryFactory.getRepository(id);
        logRepository.addObserver(StandardProcessorNode.BULLETIN_OBSERVER_ID, LogLevel.WARN, new ReportingTaskLogObserver(getBulletinRepository(), taskNode));
    }
    return taskNode;
}