private void startChildWorkflow(
final StartChildWorkflowExecutionParameters parameters,
final Settable<StartChildWorkflowReply> reply,
final Settable<String> result) {
String workflowId = parameters.getWorkflowId();
WorkflowType workflowType = parameters.getWorkflowType();
WorkflowExecution childExecution = new WorkflowExecution();
final String runId = UUID.randomUUID().toString();
// TODO: Validate parameters against registration options to find missing timeouts or other
// options
try {
DecisionContext parentDecisionContext = decisionContextProvider.getDecisionContext();
if (workflowId == null) {
workflowId =
decisionContextProvider.getDecisionContext().getWorkflowClient().generateUniqueId();
}
childExecution.setWorkflowId(workflowId);
childExecution.setRunId(runId);
final GenericActivityClient activityClient = parentDecisionContext.getActivityClient();
final WorkflowClock workflowClock = parentDecisionContext.getWorkflowClock();
WorkflowDefinitionFactory factory;
if (factoryFactory == null) {
throw new IllegalStateException("required property factoryFactory is null");
}
factory = factoryFactory.getWorkflowDefinitionFactory(workflowType);
if (factory == null) {
String cause =
StartChildWorkflowExecutionFailedCause.WORKFLOW_TYPE_DOES_NOT_EXIST.toString();
throw new StartChildWorkflowFailedException(0, childExecution, workflowType, cause);
}
TestWorkflowContext workflowContext = new TestWorkflowContext();
workflowContext.setWorkflowExecution(childExecution);
workflowContext.setWorkflowType(parameters.getWorkflowType());
workflowContext.setParentWorkflowExecution(
parentDecisionContext.getWorkflowContext().getWorkflowExecution());
workflowContext.setTagList(parameters.getTagList());
workflowContext.setTaskList(parameters.getTaskList());
DecisionContext context =
new TestDecisionContext(
activityClient, TestGenericWorkflowClient.this, workflowClock, workflowContext);
// this, parameters, childExecution, workflowClock, activityClient);
final WorkflowDefinition childWorkflowDefinition = factory.getWorkflowDefinition(context);
final ChildWorkflowTryCatchFinally tryCatch =
new ChildWorkflowTryCatchFinally(
parameters, childExecution, childWorkflowDefinition, context, result);
workflowContext.setRootTryCatch(tryCatch);
ChildWorkflowTryCatchFinally currentRun = workflowExecutions.get(workflowId);
if (currentRun != null) {
String cause = StartChildWorkflowExecutionFailedCause.WORKFLOW_ALREADY_RUNNING.toString();
throw new StartChildWorkflowFailedException(0, childExecution, workflowType, cause);
}
workflowExecutions.put(workflowId, tryCatch);
continueAsNewWorkflowExecution(tryCatch, result);
} catch (StartChildWorkflowFailedException e) {
throw e;
} catch (Throwable e) {
// This cause is chosen to represent internal error for sub-workflow creation
String cause = StartChildWorkflowExecutionFailedCause.OPEN_CHILDREN_LIMIT_EXCEEDED.toString();
StartChildWorkflowFailedException failure =
new StartChildWorkflowFailedException(0, childExecution, workflowType, cause);
failure.initCause(e);
throw failure;
} finally {
reply.set(new StartChildWorkflowReplyImpl(result, runId));
}
}
private void addWorkflowType(
Class<?> interfaze,
Class<?> workflowImplementationType,
DataConverter converterOverride,
Object[] constructorArgs)
throws InstantiationException, IllegalAccessException {
Workflow workflowAnnotation = interfaze.getAnnotation(Workflow.class);
String interfaceName = interfaze.getSimpleName();
MethodConverterPair workflowImplementationMethod = null;
MethodConverterPair getStateMethod = null;
WorkflowType workflowType = null;
WorkflowTypeRegistrationOptions registrationOptions = null;
Map<String, MethodConverterPair> signals = new HashMap<String, MethodConverterPair>();
for (Method method : interfaze.getMethods()) {
if (method.getDeclaringClass().getAnnotation(Workflow.class) == null) {
continue;
}
Execute executeAnnotation = method.getAnnotation(Execute.class);
Signal signalAnnotation = method.getAnnotation(Signal.class);
GetState getStateAnnotation = method.getAnnotation(GetState.class);
checkAnnotationUniqueness(method, executeAnnotation, signalAnnotation, getStateAnnotation);
if (executeAnnotation != null) {
if (workflowImplementationMethod != null) {
throw new IllegalArgumentException(
"Interface annotated with @Workflow is allowed to have only one method annotated with @Execute. Found "
+ getMethodFullName(workflowImplementationMethod.getMethod())
+ " and "
+ getMethodFullName(method));
}
if (!method.getReturnType().equals(void.class)
&& !(Promise.class.isAssignableFrom(method.getReturnType()))) {
throw new IllegalArgumentException(
"Workflow implementation method annotated with @Execute can return only Promise or void: "
+ getMethodFullName(method));
}
if (!method.getDeclaringClass().equals(interfaze)) {
throw new IllegalArgumentException(
"Interface "
+ interfaze.getName()
+ " cannot inherit workflow implementation method annotated with @Execute: "
+ getMethodFullName(method));
}
DataConverter converter =
createConverter(workflowAnnotation.dataConverter(), converterOverride);
workflowImplementationMethod = new MethodConverterPair(method, converter);
workflowType = getWorkflowType(interfaceName, method, executeAnnotation);
WorkflowRegistrationOptions registrationOptionsAnnotation =
interfaze.getAnnotation(WorkflowRegistrationOptions.class);
SkipTypeRegistration skipRegistrationAnnotation =
interfaze.getAnnotation(SkipTypeRegistration.class);
if (skipRegistrationAnnotation == null) {
if (registrationOptionsAnnotation == null) {
throw new IllegalArgumentException(
"@WorkflowRegistrationOptions is required for the interface that contains method annotated with @Execute");
}
registrationOptions = createRegistrationOptions(registrationOptionsAnnotation);
} else {
if (registrationOptionsAnnotation != null) {
throw new IllegalArgumentException(
"@WorkflowRegistrationOptions is not allowed for the interface annotated with @SkipTypeRegistration.");
}
}
}
if (signalAnnotation != null) {
String signalName = signalAnnotation.name();
if (signalName == null || signalName.isEmpty()) {
signalName = method.getName();
}
DataConverter signalConverter =
createConverter(workflowAnnotation.dataConverter(), converterOverride);
signals.put(signalName, new MethodConverterPair(method, signalConverter));
}
if (getStateAnnotation != null) {
if (getStateMethod != null) {
throw new IllegalArgumentException(
"Interface annotated with @Workflow is allowed to have only one method annotated with @GetState. Found "
+ getMethodFullName(getStateMethod.getMethod())
+ " and "
+ getMethodFullName(method));
}
if (method.getReturnType().equals(void.class)
|| (Promise.class.isAssignableFrom(method.getReturnType()))) {
throw new IllegalArgumentException(
"Workflow method annotated with @GetState cannot have void or Promise return type: "
+ getMethodFullName(method));
}
DataConverter converter =
createConverter(workflowAnnotation.dataConverter(), converterOverride);
getStateMethod = new MethodConverterPair(method, converter);
}
}
if (workflowImplementationMethod == null) {
throw new IllegalArgumentException(
"Workflow definition does not implement any method annotated with @Execute. "
+ workflowImplementationType);
}
POJOWorkflowImplementationFactory implementationFactory =
getImplementationFactory(workflowImplementationType, interfaze, workflowType);
WorkflowDefinitionFactory factory =
new POJOWorkflowDefinitionFactory(
implementationFactory,
workflowType,
registrationOptions,
workflowImplementationMethod,
signals,
getStateMethod,
constructorArgs);
factories.put(workflowType, factory);
workflowImplementationTypes.add(workflowImplementationType);
if (factory.getWorkflowRegistrationOptions() != null) {
workflowTypesToRegister.add(workflowType);
}
}