Azure webjob; Scheduled execution as well triggers by queue

Question

I try to figure out if it's possible to make one Azure webjob and behave it scheduled for say like once per 1 minute and also let it be able to be triggered by a queue. I managed to do both of the requirements separate but not combined in one job.

I know that in order to make them trigger on a queue I need to use JobHost and a Functions class with methods that catch the trigger. Still this blocks the scheduler and only handles triggers

When I omit the JobHost... well then the schedule works perfect. I'm pretty sure that I'm asking a contradiction and just need to make two seperate jobs but maybe one of you faced the same and manage to achieve it.

Answer 1

I wouldn't use Azure Scheduler/Scheduled Jobs here, since you're already using the SDK. You can use the new TimerTrigger.

What I'd probably do is have two functions. The first function is the function using QueueTrigger and the other is using the new TimerTrigger WebJobs released in v1.1.0. You can see a sample where I do something similar here: https://github.com/christopheranderson/feedbackengine#how-does-it-work

There I have a timer which polls an RSS feed and drops Queue messages, but I can also just drop the Queue messages from another application or, as I did in my scenario, use a WebHook.

Timer Trigger Docs: https://github.com/Azure/azure-webjobs-sdk-extensions#timertrigger

Sample:

// Triggers every minute (every time the clock looks like 00:xx:xx)
public static void CronJob([TimerTrigger("0 * * * * *")] TimerInfo timer, [Queue("Foo")] out string message)
{
    Console.WriteLine("Cron job fired!");
    message = "Hello world!";
}

public static void QueueJob([QueueTrigger("Foo")] string message)
{
    Console.WriteLine(message);
}