How to upgrade 'Subscriptions & Webhooks' to v1?

[Affie]

How do you use Subscriptions & Webhooks from the v0 docs in v1. I tried just adding the additionalTypeDefs as before but got this error message: "Subscription field must return Async Iterable. Received: undefined."

[enisdenjo]

The "Subscription field must return Async Iterable. Received: undefined." is almost always due to incorrect setup of the GraphQL resolvers. Can you please share your implementation?

[Affie]

Hi @enisdenjo, thanks for coming back to me. I tried the example in the link above as is. ie I added the following to the mesh.config.ts defineConfig:

additionalTypeDefs: `
  # If you don't have Subscription type defined anywhere
  # You have to extend subscription definition
  extend schema {
    subscription: Subscription
  }
  type Subscription {
    todoAdded: Todo @resolveTo(
      pubsubTopic: "webhook:post:todo-added"
    # result: "data.someProp.someOtherProp", # You can get nested fields
    # filterBy: "root.userId === args.userId" # You can filter the payload by `userId` for example
    )
  }`

I want a webhook endpoint for an existing REST API to publish to a subscription.

[ardatan]

Fixed in #7816 !

[Affie]

Thank you very much, it now works and the docs are also updated here!

[ardatan]

Thanks for your feedback!