Monitor Azure Function Timer Triggers with CronRabbit
AzureThe Problem
Azure Function timer triggers can fail due to scaling issues, configuration errors, or runtime exceptions. Application Insights may not catch missed executions.
The Solution
Add CronRabbit pings inside your timer trigger function to verify each execution completes successfully.
Integration
Add an HTTP call to CronRabbit at the end of your function's Run method. Use HttpClient for C# or requests for Python functions.
Code Examples
Azure Function timer trigger
C#public class TimerFunction
{
private static readonly HttpClient client = new();
private const string Ping = "https://ping.cronrabbit.com/your-id";
[FunctionName("NightlyCleanup")]
public async Task Run(
[TimerTrigger("0 0 2 * * *")] TimerInfo timer)
{
await client.GetAsync($"{Ping}/start");
try
{
await CleanupExpiredData();
await client.GetAsync(Ping);
}
catch
{
await client.GetAsync($"{Ping}/fail");
throw;
}
}
}