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?

Answer 1

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-