How to send the email for every 1 hour and for every 30mins based on threshold using timetrigger azure function app

Question

I want to send an email for every one hour and there is threshold value property in local.settings.json if threshold is reached I need to send an email for every 30 mins.

Here is my code:

       [FunctionName("StatusReport1hourFunction")]
    public async Task RunAsync([TimerTrigger("0 0 * * * *", RunOnStartup = true)] TimerInfo myTimer, ILogger log)
    {
        log.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");

       await SendStatustoEmailAsync(log);
    }
    
    public async Task SendStatustoEmailAsync(ILogger log)
    {
    // get the data from db 
        
    
    // prepare the data to send the email
    
    
    // send the email using send grid
    
    // checking threshold
    if(a > threshold)
        {
         // get the data by above process and send email for every 30 mins
        }
        else{
            //send the email for one hour
        }
    }

how to do this approach. here are my findings

1. I have done lot of research for this. Configuring the cron expression in local.settings.json, however those properties are read only.

2. I thought of 2 time trigger function in single file. However how to do with this approach I was unaware any suggestions disabling 30 mins time trigger when threshold reached when threshold is normal should enable one hour time trigger function should run

Answer 1

I'd suggest you switch to Durable Functions, Timers, for your scenario. You can set the wait time between activity executions a lot more flexible then.

https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-timers?tabs=csharp