Send Invoker Response when there are no matching functions

[prsh9]

My actions before raising this issue

• Followed the troubleshooting guide
• Read/searched the docs
• Searched past issues

Currently when invoking a function on a topic with controller.Invoke() and there are no matching functions (probably due to function still being loaded, topic-map not refreshed) there is no way to acknowledge upstream. Consider using amqp which uses manual auto-ack, there is no way to determine the failure and do a negative ack.

Expected Behaviour

• Create an custom error and send response in case of no matched function.

Current Behaviour

• No way of finding out if there are no matching functions.

Your Environment

• FaaS-CLI version ( Full output from: faas-cli version ):
  CLI:
  commit: 72816d486cf76c3089b915dfb0b66b85cf096634
  version: 0.13.13

[alexellis]

Hi,

Thanks for your interest.

Unfortunately, you didn't fill out the full issue template and gave no way to reproduce the problem.

Would you mind giving us everything we need to consider your request?

Alex