Search⌘ K
AI Features
Home
Courses
Building and Deploying Azure Functions in .NET

Solution Review: Applying Error Handling

Explore how to apply effective error handling in Azure Functions by adding try/catch blocks, logging exceptions, and configuring retry policies to enhance reliability and availability of serverless applications.

We'll cover the following...

Overview

The complete solution is presented in the code widget below:

using System;
using Microsoft.Azure.WebJobs;
using Microsoft.Extensions.Logging;

namespace AzureFunctionApp;

public class Functions
{
    [FunctionName("TimerFunction")]
    [FixedDelayRetry(-1, "00:00:10")]
    public void TimerWithExceptionHandling([TimerTrigger("0 * * * * *")] TimerInfo timer, ILogger log)
    {
        try
        {
            if (DateTime.UtcNow.Minute % 2 != 0)
                throw new InvalidOperationException("Incorrect schedule time.");
        }
        catch(InvalidOperationException ex)
        {
            log.LogError("Timer execution failed. {Error} {StackTrace}", ex.Message, ex.StackTrace);
        }

        log.LogInformation("Timer executed successfully. Next occurrence: {Occurrence}", timer.Schedule.GetNextOccurrence(DateTime.UtcNow));
    }
}
Complete solution with error handling

Solving the challenge

We perform the ...