public String getWorkflowState(WorkflowExecution execution) throws WorkflowException {
String workflowId = execution.getWorkflowId();
if (workflowId == null) {
throw new IllegalArgumentException("null workflowId");
}
final ChildWorkflowTryCatchFinally childTryCatch = workflowExecutions.get(workflowId);
if (childTryCatch == null) {
throw new UnknownResourceException(execution.toString());
}
String openExecutionRunId = childTryCatch.getWorkflowExecution().getRunId();
if (execution.getRunId() != null && !openExecutionRunId.equals(execution.getRunId())) {
throw new UnknownResourceException("Unknown Execution (runId doesn't match)");
}
return childTryCatch.getWorkflowState();
}
public void requestCancelWorkflowExecution(WorkflowExecution execution) {
String workflowId = execution.getWorkflowId();
if (workflowId == null) {
throw new IllegalArgumentException("null workflowId");
}
final ChildWorkflowTryCatchFinally childTryCatch = workflowExecutions.get(workflowId);
if (childTryCatch == null) {
throw new UnknownResourceException("Unknown excution: " + execution.toString());
}
String openExecutionRunId = childTryCatch.getWorkflowExecution().getRunId();
if (execution.getRunId() != null && !openExecutionRunId.equals(execution.getRunId())) {
throw new UnknownResourceException("Unknown Execution (runId doesn't match)");
}
childTryCatch.cancel(new CancellationException());
}
public Promise<Void> signalWorkflowExecution(
final SignalExternalWorkflowParameters signalParameters) {
WorkflowExecution signaledExecution = new WorkflowExecution();
signaledExecution.setWorkflowId(signalParameters.getWorkflowId());
signaledExecution.setRunId(signalParameters.getRunId());
final ChildWorkflowTryCatchFinally childTryCatch =
workflowExecutions.get(signalParameters.getWorkflowId());
if (childTryCatch == null) {
throw new SignalExternalWorkflowException(
0, signaledExecution, "UNKNOWN_EXTERNAL_WORKFLOW_EXECUTION");
}
String openExecutionRunId = childTryCatch.getWorkflowExecution().getRunId();
if (signalParameters.getRunId() != null
&& !openExecutionRunId.equals(signalParameters.getRunId())) {
throw new SignalExternalWorkflowException(
0, signaledExecution, "Unknown Execution (runId doesn't match)");
}
childTryCatch.signalRecieved(signalParameters.getSignalName(), signalParameters.getInput());
return Promise.Void();
}
private void continueAsNewWorkflowExecution(
final ChildWorkflowTryCatchFinally tryCatch, final Settable<String> result) {
// It is always set to ready with null if no continuation is necessary
final Promise<ContinueAsNewWorkflowExecutionParameters> continueAsNew =
tryCatch.getContinueAsNew();
new Task(continueAsNew) {
@Override
protected void doExecute() throws Throwable {
ContinueAsNewWorkflowExecutionParameters cp = continueAsNew.get();
if (cp == null) {
return;
}
StartChildWorkflowExecutionParameters nextParameters =
new StartChildWorkflowExecutionParameters();
nextParameters.setInput(cp.getInput());
WorkflowExecution previousWorkflowExecution = tryCatch.getWorkflowExecution();
String workflowId = previousWorkflowExecution.getWorkflowId();
nextParameters.setWorkflowId(workflowId);
StartChildWorkflowExecutionParameters previousParameters = tryCatch.getParameters();
nextParameters.setWorkflowType(previousParameters.getWorkflowType());
long startToClose = cp.getExecutionStartToCloseTimeoutSeconds();
if (startToClose == FlowConstants.NONE) {
startToClose = previousParameters.getExecutionStartToCloseTimeoutSeconds();
}
nextParameters.setExecutionStartToCloseTimeoutSeconds(startToClose);
long taskStartToClose = cp.getTaskStartToCloseTimeoutSeconds();
if (taskStartToClose == FlowConstants.NONE) {
taskStartToClose = previousParameters.getTaskStartToCloseTimeoutSeconds();
}
nextParameters.setTaskStartToCloseTimeoutSeconds(taskStartToClose);
Settable<StartChildWorkflowReply> reply = new Settable<StartChildWorkflowReply>();
startChildWorkflow(nextParameters, reply, result);
}
};
}