Run function after task retry limit reached google app engine

Question

I have the code like below:

Queue queue = QueueFactory.getDefaultQueue();
queue.add(TaskOptions.Builder.withRetryOptions(
                     RetryOptions.Builder
                             .withTaskRetryLimit(0)));

With this code the task will not retry if not an error. However, what I want to do is run another function call onRetryFailure() when 10 minutes have passed( the maximum time before retry). Any idea how i can do so?

Do you want something like error handling? A function that get executed when 10 minutes pass? I don't fully understand your question. — J.L Valtueña, Jul 13 '18 at 10:23
@J.LValtueña basically the idea is like a try catch. i want to catch when task retry limit is reached to run a function. — CloudSeph, Jul 16 '18 at 02:03

score 1 · Answer 1 · answered Jul 12 '18 at 13:30

It's not very clear under what conditions you want this onRetryFailure() function to run. You could:

if you want onRetryFailure() to be called for any error, you could wrap up your current task code in a try-catch and launch onRetryFailure() as another task
if you want onRetryFailure() to be called only when you hit the 10 minute time limit, at the start of your task you could add onRetryFailure() as another task with a 10 minute countdown and at the end of your task you could delete onRetryFailure() from the queue if you no longer want it to run https://cloud.google.com/appengine/docs/standard/java/javadoc/com/google/appengine/api/taskqueue/Queue.html#deleteTask-java.util.List-

For the second comment, I can't do that as only if queue passes the 10 minute mark should it run. Otherwise, it should not. Basically, if the queue is successful and does not pass 10 mins. I dont want it to run. But doing it like what you said will run after 10 mins regardless of success or failure — CloudSeph, Jul 12 '18 at 13:53

Run function after task retry limit reached google app engine

1 Answers1