Multiple Azure Functions in one Timer trigger class

4
votes

We have to write multiple triggers. I was hoping to create separate functions, based on the trigger types. So if I need 5 timer triggers, that will run at different times, I would create one Timer trigger function class and name the functions like [TimerTrigger1], [TimerTrigger2], [TimerTrigger3] ... and so forth. After I added the code I am not sure if I can do that anymore.

Can someone suggest how I can go about adding multiple triggers? I can't have two Run functions under one class. 

public static class TimerTrigger
{
    [FunctionName("InsertTimerTrigger1")]
    public static void Run([TimerTrigger("0 */5 * * * *")]TimerInfo myTimer, ILogger log)
    {
         // Do task 1
        log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
    }

    [FunctionName("InsertTimerTrigger2")]
    public static void Run([TimerTrigger("0 */15 * * * *")]TimerInfo myTimer, ILogger log)
    {
        //Do Task 2
        log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
    }
}
2
azureazure-functions

2 Answers

7
votes

You can create multiple functions in Single Class. You can change Run Method name.

public static class Function1
{
    [FunctionName("Function1")]
    public static void Method1([TimerTrigger("0 */2 * * * *")]TimerInfo myTimer, TraceWriter log)
    {
        log.Info($"C# Timer trigger function executed at: {DateTime.Now}");
    }

    [FunctionName("Function2")]
    public static void Method2([TimerTrigger("0 */3 * * * *")]TimerInfo myTimer, TraceWriter log)
    {
        log.Info($"C# Timer trigger function executed at: {DateTime.Now}");
    }
}

But I will recommend, Create multiple functions will help you (5 in your case).

  1. If you are using common business logic, you can put in a common class and inject in all function.
  2. You can independently Enable/Disable/Delete function from FunctionApp Instance.

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  1. You can monitor each function independently (from Function Monitor section)

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5
votes

You can choose any name for the methods. (Naming it as "Run" is not a requirement.)

public static class TimerTrigger
{
    [FunctionName("InsertTimerTrigger1")]
    public static void InsertTimerTrigger1([TimerTrigger("0 */5 * * * *")]TimerInfo myTimer, ILogger log)
    {
         // Do task 1
        log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
    }

    [FunctionName("InsertTimerTrigger2")]
    public static void InsertTimerTrigger2([TimerTrigger("0 */15 * * * *")]TimerInfo myTimer, ILogger log)
    {
        //Do Task 2
        log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
    }
}