Invoke durable functions via CronJob

[aaarichter]

I'd like to invoke a durable function via an EventBridge Rule, but this doesn't seem to work. My guess it's due to the need to invoke it asynchronously.

My CDK code is like this:

new Rule(scope, "AndChargeStationImageImportTrigger", {
  ruleName: "AndChargeStationImageImportTrigger",
  enabled: isProduction(andChargeStationImageImportLambda),
  schedule: Schedule.expression("cron(49 2 * * ? *)"),
  targets: [new LambdaFunction(andChargeStationImageImportLambda)],
});

How can I invoke a durable function in a cron job?

[SilanHe]

Hello aaarichter,
, thanks for your patience. Our team is still figuring out team mechanisms for working with Github. We appreciate your understanding.

Lambda invocations made through EventbridgeRule are by default asynchronously invoked. I believe the reason why your CDK code is not working is because for durable lambda functions, you need to use a qualified ARN. I.E. you need to specify a version of the function. Please reference a particular version of the function instead.

https://docs.aws.amazon.com/lambda/latest/dg/durable-invoking.html#durable-invoking-qualified-arns

Please note that for "Production" use cases, we don't recommend using $LATEST.

[embano1]

@aaarichter +1 on @SilanHe's comment. Couple additional notes:

1. You might also want to look at EventBridge Scheduler, a dedicated scheduling service which supersedes EventBridge scheduled Rules
2. When configuring targets in EventBridge, always add a DLQ and configure your retry policy (if you want a different one than the default) - you'd then see additional error information as part of the message metadata in the DLQ to simplify troubleshooting