Dead Letter Sink and Sequences/Flows

[Lee Bartelme]

It seems odd that for sequences, a delivery must be specified for every step in the sequence. Examples of this are not in the docs, but after a lot of trial and error I did finally look at the step reference and see delivery is a property there. 

Doesn't it make sense to possibly be able to set that once, maybe in the sequence spec or something? It feels cumbersome, if I want a Dead Letter Sink for all steps in my sequence, to have to define the same delivery in every single step.

Is there a way around this that I am not seeing?

[vil...@us.ibm.com]

You should be able to set the delivery options under `channelTemplate`. For example:

apiVersion: flows.knative.dev/v1 kind: Sequence metadata: name: second-sequence spec: channelTemplate: apiVersion: messaging.knative.dev/v1 kind: InMemoryChannel

spec:

delivery: deadLetterSink: ref: apiVersion: serving.knative.dev/v1 kind: Service name: example-sink

Let us know if that works for you. This is at least the intent. 

[Lee Bartelme]

This is what I get when I do that:

error validating data: ValidationError(Sequence.spec.channelTemplate.spec): invalid type for dev.knative.flows.v1.Sequence.spec.channelTemplate.spec: got "map", expected "string"; if you choose to ignore these errors, turn validation off with --validate=false

[Lee Bartelme]

Oddly the a parallel will accept the syntax you provided, but a sequence does not.

[vil...@us.ibm.com]

Seems like a bug. Do you mind opening an issue?