public virtual void testEventSubprocess()
{
InvocationLogListener.reset();
// given a process instance
runtimeService.startProcessInstanceByKey("testProcess");
// and two threads correlating in parallel
ThreadControl thread1 = executeControllableCommand(new ControllableMessageCorrelationCommand("incoming", false));
thread1.reportInterrupts();
ThreadControl thread2 = executeControllableCommand(new ControllableMessageCorrelationCommand("incoming", false));
thread2.reportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.waitForSync();
thread2.waitForSync();
// both threads correlate
thread1.makeContinue();
thread2.makeContinue();
thread1.waitForSync();
thread2.waitForSync();
// the first thread ends its transaction
thread1.waitUntilDone();
assertNull(thread1.Exception);
// the second thread ends its transaction and fails with optimistic locking exception
thread2.waitUntilDone();
assertTrue(thread2.Exception != null);
assertTrue(thread2.Exception is OptimisticLockingException);
}
public virtual void testConcurrentExclusiveCorrelation()
{
InvocationLogListener.reset();
// given a process instance
runtimeService.startProcessInstanceByKey("testProcess");
// and two threads correlating in parallel
ThreadControl thread1 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", true));
thread1.reportInterrupts();
ThreadControl thread2 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", true));
thread2.reportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.waitForSync();
thread2.waitForSync();
// thread one correlates and acquires the exclusive lock
thread1.makeContinue();
thread1.waitForSync();
// the service task was executed once
assertEquals(1, InvocationLogListener.Invocations);
// thread two attempts to acquire the exclusive lock but can't since thread 1 hasn't released it yet
thread2.makeContinue();
Thread.Sleep(2000);
// let the first thread ends its transaction
thread1.makeContinue();
assertNull(thread1.Exception);
// thread 2 can't continue because the event subscription it tried to lock was deleted
thread2.waitForSync();
assertTrue(thread2.Exception != null);
assertTrue(thread2.Exception is ProcessEngineException);
assertTextPresent("does not have a subscription to a message event with name 'Message'", thread2.Exception.Message);
// the first thread ended successfully without an exception
thread1.join();
assertNull(thread1.Exception);
// the follow-up task was reached
Task afterMessageTask = taskService.createTaskQuery().singleResult();
assertEquals(afterMessageTask.TaskDefinitionKey, "afterMessageUserTask");
// the service task was not executed a second time
assertEquals(1, InvocationLogListener.Invocations);
}
public virtual void FAILING_testConcurrentMixedCorrelationCase2()
{
InvocationLogListener.reset();
// given a process instance
runtimeService.startProcessInstanceByKey("testProcess");
// and two threads correlating in parallel (one exclusive, one non-exclusive)
ThreadControl thread1 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", false));
thread1.reportInterrupts();
ThreadControl thread2 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", true));
thread2.reportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.waitForSync();
thread2.waitForSync();
// thread one correlates and acquires no lock
thread1.makeContinue();
thread1.waitForSync();
// thread two acquires a lock and succeeds because thread one hasn't acquired one
thread2.makeContinue();
thread2.waitForSync();
// the service task was executed twice
assertEquals(2, InvocationLogListener.Invocations);
// thread one ends its transaction and blocks on flush when it attempts to delete the event subscription
thread1.makeContinue();
Thread.Sleep(5000);
assertNull(thread1.Exception);
assertEquals(0, taskService.createTaskQuery().count());
// thread 2 flushes successfully and releases the lock
thread2.waitUntilDone();
assertNull(thread2.Exception);
Task afterMessageTask = taskService.createTaskQuery().singleResult();
assertNotNull(afterMessageTask);
assertEquals(afterMessageTask.TaskDefinitionKey, "afterMessageUserTask");
// thread 1 flush fails with optimistic locking
thread1.join();
assertTrue(thread1.Exception != null);
assertTrue(thread1.Exception is OptimisticLockingException);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Deployment public void testConcurrentEndExecutionListener()
public virtual void testConcurrentEndExecutionListener()
{
InvocationLogListener.reset();
// given a process instance
runtimeService.startProcessInstanceByKey("testProcess");
IList <Execution> tasks = runtimeService.createExecutionQuery().messageEventSubscriptionName("Message").list();
// two tasks waiting for the message
assertEquals(2, tasks.Count);
// start first thread and wait in the second execution end listener
ThreadControl thread1 = executeControllableCommand(new ControllableMessageEventReceivedCommand(tasks[0].Id, "Message", true));
thread1.reportInterrupts();
thread1.waitForSync();
// the counting execution listener was executed on task 1
assertEquals(1, InvocationLogListener.Invocations);
// start second thread and complete the task
ThreadControl thread2 = executeControllableCommand(new ControllableMessageEventReceivedCommand(tasks[1].Id, "Message", false));
thread2.waitForSync();
thread2.waitUntilDone();
// the counting execution listener was executed on task 1 and 2
assertEquals(2, InvocationLogListener.Invocations);
// continue with thread 1
thread1.makeContinueAndWaitForSync();
// the counting execution listener was not executed again
assertEquals(2, InvocationLogListener.Invocations);
// try to complete thread 1
thread1.waitUntilDone();
// thread 1 was rolled back with an optimistic locking exception
Exception exception = thread1.Exception;
assertNotNull(exception);
assertTrue(exception is OptimisticLockingException);
// the execution listener was not executed again
assertEquals(2, InvocationLogListener.Invocations);
}
public virtual void testConcurrentExclusiveCorrelationToDifferentExecutions()
{
InvocationLogListener.reset();
// given a process instance
ProcessInstance instance1 = runtimeService.startProcessInstanceByKey("testProcess");
ProcessInstance instance2 = runtimeService.startProcessInstanceByKey("testProcess");
// and two threads correlating in parallel to each of the two instances
ThreadControl thread1 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", instance1.Id, true));
thread1.reportInterrupts();
ThreadControl thread2 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", instance2.Id, true));
thread2.reportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.waitForSync();
thread2.waitForSync();
// thread one correlates and acquires the exclusive lock on the event subscription of instance1
thread1.makeContinue();
thread1.waitForSync();
// the service task was executed once
assertEquals(1, InvocationLogListener.Invocations);
// thread two correlates and acquires the exclusive lock on the event subscription of instance2
// depending on the database and locking used, this may block thread2
thread2.makeContinue();
// thread 1 completes successfully
thread1.waitUntilDone();
assertNull(thread1.Exception);
// thread2 should be able to continue at least after thread1 has finished and released its lock
thread2.waitForSync();
// the service task was executed the second time
assertEquals(2, InvocationLogListener.Invocations);
// thread 2 completes successfully
thread2.waitUntilDone();
assertNull(thread2.Exception);
// the follow-up task was reached in both instances
assertEquals(2, taskService.createTaskQuery().taskDefinitionKey("afterMessageUserTask").count());
}
public virtual void FAILING_testConcurrentExclusiveCorrelationToDifferentExecutionsCase2()
{
InvocationLogListener.reset();
// given a process instance
IProcessInstance instance1 = runtimeService.StartProcessInstanceByKey("testProcess");
IProcessInstance instance2 = runtimeService.StartProcessInstanceByKey("testProcess");
// and two threads correlating in parallel to each of the two instances
ThreadControl thread1 = ExecuteControllableCommand(new ControllableMessageCorrelationCommand("Message", instance1.Id, true));
thread1.ReportInterrupts();
ThreadControl thread2 = ExecuteControllableCommand(new ControllableMessageCorrelationCommand("Message", instance2.Id, true));
thread2.ReportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.WaitForSync();
thread2.WaitForSync();
// thread one correlates and acquires the exclusive lock on the event subscription of instance1
thread1.MakeContinue();
thread1.WaitForSync();
// the service task was executed once
Assert.AreEqual(1, InvocationLogListener.Invocations);
// thread two correlates and acquires the exclusive lock on the event subscription of instance2
thread2.MakeContinue();
// FIXME: this does not return on sql server due to locking
thread2.WaitForSync();
// the service task was executed the second time
Assert.AreEqual(2, InvocationLogListener.Invocations);
// thread 2 completes successfully, even though it acquired its lock after thread 1
thread2.WaitUntilDone();
Assert.IsNull(thread2.Exception);
// thread 1 completes successfully
thread1.WaitUntilDone();
Assert.IsNull(thread1.Exception);
// the follow-up task was reached in both instances
Assert.AreEqual(2, taskService.CreateTaskQuery(c => c.TaskDefinitionKey == "afterMessageUserTask").Count());
}
public virtual void testConcurrentMixedCorrelation()
{
InvocationLogListener.reset();
// given a process instance
runtimeService.startProcessInstanceByKey("testProcess");
// and two threads correlating in parallel (one exclusive, one non-exclusive)
ThreadControl thread1 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", true));
thread1.reportInterrupts();
ThreadControl thread2 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", false));
thread2.reportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.waitForSync();
thread2.waitForSync();
// thread one correlates and acquires the exclusive lock
thread1.makeContinue();
thread1.waitForSync();
// thread two correlates since it does not need a pessimistic lock
thread2.makeContinue();
thread2.waitForSync();
// the service task was executed twice
assertEquals(2, InvocationLogListener.Invocations);
// the first thread ends its transaction and releases the lock; the event subscription is now gone
thread1.waitUntilDone();
assertNull(thread1.Exception);
Task afterMessageTask = taskService.createTaskQuery().singleResult();
assertEquals(afterMessageTask.TaskDefinitionKey, "afterMessageUserTask");
// thread two attempts to end its transaction and fails with optimistic locking
thread2.makeContinue();
thread2.waitForSync();
assertTrue(thread2.Exception != null);
assertTrue(thread2.Exception is OptimisticLockingException);
}
public virtual void testConcurrentCorrelationFailsWithOptimisticLockingException()
{
InvocationLogListener.reset();
// given a process instance
runtimeService.startProcessInstanceByKey("testProcess");
// and two threads correlating in parallel
ThreadControl thread1 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", false));
thread1.reportInterrupts();
ThreadControl thread2 = executeControllableCommand(new ControllableMessageCorrelationCommand("Message", false));
thread2.reportInterrupts();
// both threads open a transaction and wait before correlating the message
thread1.waitForSync();
thread2.waitForSync();
// both threads correlate
thread1.makeContinue();
thread2.makeContinue();
thread1.waitForSync();
thread2.waitForSync();
// the service task was executed twice
assertEquals(2, InvocationLogListener.Invocations);
// the first thread ends its transcation
thread1.waitUntilDone();
assertNull(thread1.Exception);
Task afterMessageTask = taskService.createTaskQuery().singleResult();
assertEquals(afterMessageTask.TaskDefinitionKey, "afterMessageUserTask");
// the second thread ends its transaction and fails with optimistic locking exception
thread2.waitUntilDone();
assertTrue(thread2.Exception != null);
assertTrue(thread2.Exception is OptimisticLockingException);
}
