Examples with HistoryEvent com.uber.cadence.HistoryEvent used on opensource projects

Example 46 with HistoryEvent

use of com.uber.cadence.HistoryEvent in project cadence-client by uber-java.

the class ReplayDecider method decideImpl.

private void decideImpl(Functions.Proc query) throws Throwable {
    try {
        long lastNonReplayedEventId = historyHelper.getLastNonReplayEventId();
        // Buffer events until the next DecisionTaskStarted and then process them
        // setting current time to the time of DecisionTaskStarted event
        HistoryHelper.EventsIterator eventsIterator = historyHelper.getEvents();
        // Looks ahead to the DecisionTaskStarted event to get current time before calling eventLoop.
        do {
            List<HistoryEvent> decisionCompletionToStartEvents = new ArrayList<>();
            while (eventsIterator.hasNext()) {
                HistoryEvent event = eventsIterator.next();
                EventType eventType = event.getEventType();
                if (eventType == EventType.DecisionTaskCompleted) {
                    decisionsHelper.setWorkflowContextData(event.getDecisionTaskCompletedEventAttributes().getExecutionContext());
                } else if (eventType == EventType.DecisionTaskStarted || !eventsIterator.hasNext()) {
                    // Above check for the end of history is to support queries that get histories
                    // without DecisionTaskStarted being the last event.
                    decisionsHelper.handleDecisionTaskStartedEvent();
                    if (!eventsIterator.isNextDecisionFailed()) {
                        // Cadence timestamp is in nanoseconds
                        long replayCurrentTimeMilliseconds = event.getTimestamp() / MILLION;
                        context.setReplayCurrentTimeMilliseconds(replayCurrentTimeMilliseconds);
                        break;
                    }
                } else if (eventType != EventType.DecisionTaskScheduled && eventType != EventType.DecisionTaskTimedOut && eventType != EventType.DecisionTaskFailed) {
                    decisionCompletionToStartEvents.add(event);
                }
            }
            for (HistoryEvent event : decisionCompletionToStartEvents) {
                if (event.getEventId() >= lastNonReplayedEventId) {
                    context.setReplaying(false);
                }
                EventType eventType = event.getEventType();
                processEvent(event, eventType);
            }
            eventLoop();
            mayBeCompleteWorkflow();
        } while (eventsIterator.hasNext());
    } finally {
        if (query != null) {
            query.apply();
        }
        workflow.close();
    }
}

Example 47 with HistoryEvent

use of com.uber.cadence.HistoryEvent in project cadence-client by uber-java.

the class WorkflowExecutionUtils method getInstanceCloseEventAsync.

private static CompletableFuture<HistoryEvent> getInstanceCloseEventAsync(IWorkflowService service, String domain, final WorkflowExecution workflowExecution, byte[] pageToken, long timeout, TimeUnit unit) {
    // TODO: Interrupt service long poll call on timeout and on interrupt
    long start = System.currentTimeMillis();
    CompletableFuture<HistoryEvent> result = new CompletableFuture<>();
    GetWorkflowExecutionHistoryRequest request = new GetWorkflowExecutionHistoryRequest();
    request.setDomain(domain);
    request.setExecution(workflowExecution);
    request.setHistoryEventFilterType(HistoryEventFilterType.CLOSE_EVENT);
    request.setNextPageToken(pageToken);
    CompletableFuture<GetWorkflowExecutionHistoryResponse> response = getWorkflowExecutionHistoryAsync(service, request);
    return response.thenComposeAsync((r) -> {
        if (timeout != 0 && System.currentTimeMillis() - start > unit.toMillis(timeout)) {
            throw CheckedExceptionWrapper.wrap(new TimeoutException("WorkflowId=" + workflowExecution.getWorkflowId() + ", runId=" + workflowExecution.getRunId() + ", timeout=" + timeout + ", unit=" + unit));
        }
        History history = r.getHistory();
        if (history == null || history.getEvents().size() == 0) {
            // Empty poll returned
            return getInstanceCloseEventAsync(service, domain, workflowExecution, pageToken, timeout, unit);
        }
        HistoryEvent event = history.getEvents().get(0);
        if (!isWorkflowExecutionCompletedEvent(event)) {
            throw new RuntimeException("Last history event is not completion event: " + event);
        }
        // Workflow called continueAsNew. Start polling the new generation with new runId.
        if (event.getEventType() == EventType.WorkflowExecutionContinuedAsNew) {
            WorkflowExecution nextWorkflowExecution = new WorkflowExecution().setWorkflowId(workflowExecution.getWorkflowId()).setRunId(event.getWorkflowExecutionContinuedAsNewEventAttributes().getNewExecutionRunId());
            return getInstanceCloseEventAsync(service, domain, nextWorkflowExecution, r.getNextPageToken(), timeout, unit);
        }
        return CompletableFuture.completedFuture(event);
    });
}

Example 48 with HistoryEvent

use of com.uber.cadence.HistoryEvent in project cadence-client by uber-java.

the class WorkflowExecutionUtils method getInstanceCloseEvent.

/**
 * Returns an instance closing event, potentially waiting for workflow to complete.
 */
public static HistoryEvent getInstanceCloseEvent(IWorkflowService service, String domain, WorkflowExecution workflowExecution, long timeout, TimeUnit unit) throws TimeoutException, EntityNotExistsError {
    byte[] pageToken = null;
    GetWorkflowExecutionHistoryResponse response;
    // TODO: Interrupt service long poll call on timeout and on interrupt
    long start = System.currentTimeMillis();
    HistoryEvent event;
    do {
        GetWorkflowExecutionHistoryRequest r = new GetWorkflowExecutionHistoryRequest();
        r.setDomain(domain);
        r.setExecution(workflowExecution);
        r.setHistoryEventFilterType(HistoryEventFilterType.CLOSE_EVENT);
        r.setNextPageToken(pageToken);
        try {
            response = Retryer.retryWithResult(retryParameters, () -> service.GetWorkflowExecutionHistory(r));
        } catch (EntityNotExistsError e) {
            throw e;
        } catch (TException e) {
            throw CheckedExceptionWrapper.wrap(e);
        }
        if (timeout != 0 && System.currentTimeMillis() - start > unit.toMillis(timeout)) {
            throw new TimeoutException("WorkflowId=" + workflowExecution.getWorkflowId() + ", runId=" + workflowExecution.getRunId() + ", timeout=" + timeout + ", unit=" + unit);
        }
        pageToken = response.getNextPageToken();
        History history = response.getHistory();
        if (history != null && history.getEvents().size() > 0) {
            event = history.getEvents().get(0);
            if (!isWorkflowExecutionCompletedEvent(event)) {
                throw new RuntimeException("Last history event is not completion event: " + event);
            }
            // Workflow called continueAsNew. Start polling the new generation with new runId.
            if (event.getEventType() == EventType.WorkflowExecutionContinuedAsNew) {
                pageToken = null;
                workflowExecution = new WorkflowExecution().setWorkflowId(workflowExecution.getWorkflowId()).setRunId(event.getWorkflowExecutionContinuedAsNewEventAttributes().getNewExecutionRunId());
                continue;
            }
            break;
        }
    } while (true);
    return event;
}

Example 49 with HistoryEvent

use of com.uber.cadence.HistoryEvent in project cadence-client by uber-java.

the class WorkflowExecutionUtils method prettyPrintHistory.

public static String prettyPrintHistory(Iterator<HistoryEvent> events, boolean showWorkflowTasks) {
    StringBuilder result = new StringBuilder();
    result.append("{");
    boolean first = true;
    long firstTimestamp = 0;
    while (events.hasNext()) {
        HistoryEvent event = events.next();
        if (!showWorkflowTasks && event.getEventType().toString().startsWith("WorkflowTask")) {
            continue;
        }
        if (first) {
            first = false;
            firstTimestamp = event.getTimestamp();
        } else {
            result.append(",");
        }
        result.append("\n    ");
        result.append(prettyPrintHistoryEvent(event, firstTimestamp));
    }
    result.append("\n}");
    return result.toString();
}