Examples with WorkflowContext co.cask.cdap.api.workflow.WorkflowContext used on opensource projects

Example 1 with WorkflowContext

use of co.cask.cdap.api.workflow.WorkflowContext in project cdap by caskdata.

the class ETLWorkflow method destroy.

@TransactionPolicy(TransactionControl.EXPLICIT)
@Override
public void destroy() {
    WorkflowContext workflowContext = getContext();
    PipelineRuntime pipelineRuntime = new PipelineRuntime(workflowContext, workflowMetrics);
    if (workflowContext.getDataTracer(PostAction.PLUGIN_TYPE).isEnabled()) {
        return;
    }
    for (Map.Entry<String, PostAction> endingActionEntry : postActions.entrySet()) {
        String name = endingActionEntry.getKey();
        PostAction action = endingActionEntry.getValue();
        StageSpec stageSpec = postActionSpecs.get(name);
        BatchActionContext context = new WorkflowBackedActionContext(workflowContext, pipelineRuntime, stageSpec);
        try {
            action.run(context);
        } catch (Throwable t) {
            LOG.error("Error while running ending action {}.", name, t);
        }
    }
}

Example 2 with WorkflowContext

use of co.cask.cdap.api.workflow.WorkflowContext in project cdap by caskdata.

the class WorkflowDriver method executeCondition.

@SuppressWarnings("unchecked")
private void executeCondition(ApplicationSpecification appSpec, final WorkflowConditionNode node, InstantiatorFactory instantiator, ClassLoader classLoader, WorkflowToken token) throws Exception {
    final BasicWorkflowContext context = new BasicWorkflowContext(workflowSpec, token, program, programOptions, cConf, metricsCollectionService, datasetFramework, txClient, discoveryServiceClient, nodeStates, pluginInstantiator, secureStore, secureStoreManager, messagingService, node.getConditionSpecification());
    final Iterator<WorkflowNode> iterator;
    Class<?> clz = classLoader.loadClass(node.getPredicateClassName());
    Predicate<WorkflowContext> predicate = instantiator.get(TypeToken.of((Class<? extends Predicate<WorkflowContext>>) clz)).create();
    if (!(predicate instanceof Condition)) {
        iterator = predicate.apply(context) ? node.getIfBranch().iterator() : node.getElseBranch().iterator();
    } else {
        final Condition workflowCondition = (Condition) predicate;
        Reflections.visit(workflowCondition, workflowCondition.getClass(), new PropertyFieldSetter(node.getConditionSpecification().getProperties()), new DataSetFieldSetter(context), new MetricsFieldSetter(context.getMetrics()));
        try {
            // AbstractCondition implements final initialize(context) and requires subclass to
            // implement initialize(), whereas conditions that directly implement Condition can
            // override initialize(context)
            TransactionControl txControl = workflowCondition instanceof AbstractCondition ? Transactions.getTransactionControl(TransactionControl.IMPLICIT, AbstractCondition.class, workflowCondition, "initialize") : Transactions.getTransactionControl(TransactionControl.IMPLICIT, Condition.class, workflowCondition, "initialize", WorkflowContext.class);
            context.initializeProgram(workflowCondition, txControl, false);
            boolean result = context.execute(() -> workflowCondition.apply(context));
            iterator = result ? node.getIfBranch().iterator() : node.getElseBranch().iterator();
        } finally {
            TransactionControl txControl = Transactions.getTransactionControl(TransactionControl.IMPLICIT, Condition.class, workflowCondition, "destroy");
            context.destroyProgram(workflowCondition, txControl, false);
        }
    }
    // If a workflow updates its token at a condition node, it will be persisted after the execution of the next node.
    // However, the call below ensures that even if the workflow fails/crashes after a condition node, updates from the
    // condition node are also persisted.
    runtimeStore.updateWorkflowToken(workflowRunId, token);
    executeAll(iterator, appSpec, instantiator, classLoader, token);
}

Example 3 with WorkflowContext

use of co.cask.cdap.api.workflow.WorkflowContext in project cdap by caskdata.

the class SmartWorkflow method destroy.

@Override
public void destroy() {
    WorkflowContext workflowContext = getContext();
    PipelineRuntime pipelineRuntime = new PipelineRuntime(workflowContext, workflowMetrics);
    // Execute the post actions only if pipeline is not running in preview mode.
    if (!workflowContext.getDataTracer(PostAction.PLUGIN_TYPE).isEnabled()) {
        for (Map.Entry<String, PostAction> endingActionEntry : postActions.entrySet()) {
            String name = endingActionEntry.getKey();
            PostAction action = endingActionEntry.getValue();
            StageSpec stageSpec = stageSpecs.get(name);
            BatchActionContext context = new WorkflowBackedActionContext(workflowContext, pipelineRuntime, stageSpec);
            try {
                action.run(context);
            } catch (Throwable t) {
                LOG.error("Error while running post action {}.", name, t);
            }
        }
    }
    // publish all alerts
    for (Map.Entry<String, AlertPublisher> alertPublisherEntry : alertPublishers.entrySet()) {
        String name = alertPublisherEntry.getKey();
        AlertPublisher alertPublisher = alertPublisherEntry.getValue();
        PartitionedFileSet alertConnector = workflowContext.getDataset(name);
        try (CloseableIterator<Alert> alerts = new AlertReader(alertConnector.getPartitions(PartitionFilter.ALWAYS_MATCH))) {
            if (!alerts.hasNext()) {
                continue;
            }
            StageMetrics stageMetrics = new DefaultStageMetrics(workflowMetrics, name);
            StageSpec stageSpec = stageSpecs.get(name);
            AlertPublisherContext alertContext = new DefaultAlertPublisherContext(pipelineRuntime, stageSpec, workflowContext, workflowContext.getAdmin());
            alertPublisher.initialize(alertContext);
            TrackedIterator<Alert> trackedIterator = new TrackedIterator<>(alerts, stageMetrics, Constants.Metrics.RECORDS_IN);
            alertPublisher.publish(trackedIterator);
        } catch (Exception e) {
            LOG.warn("Stage {} had errors publishing alerts. Alerts may not have been published.", name, e);
        } finally {
            try {
                alertPublisher.destroy();
            } catch (Exception e) {
                LOG.warn("Error destroying alert publisher for stage {}", name, e);
            }
        }
    }
    ProgramStatus status = getContext().getState().getStatus();
    if (status == ProgramStatus.FAILED) {
        WRAPPERLOGGER.error("Pipeline '{}' failed.", getContext().getApplicationSpecification().getName());
    } else {
        WRAPPERLOGGER.info("Pipeline '{}' {}.", getContext().getApplicationSpecification().getName(), status == ProgramStatus.COMPLETED ? "succeeded" : status.name().toLowerCase());
    }
    MacroEvaluator macroEvaluator = new DefaultMacroEvaluator(pipelineRuntime.getArguments(), workflowContext.getLogicalStartTime(), workflowContext, workflowContext.getNamespace());
    // Get resolved plugin properties
    Map<String, Map<String, String>> resolvedProperties = new HashMap<>();
    for (StageSpec spec : stageSpecs.values()) {
        String stageName = spec.getName();
        resolvedProperties.put(stageName, workflowContext.getPluginProperties(stageName, macroEvaluator).getProperties());
    }
    // Add resolved plugin properties to workflow token as a JSON String
    workflowContext.getToken().put(RESOLVED_PLUGIN_PROPERTIES_MAP, GSON.toJson(resolvedProperties));
}