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native subscription support for Kotlin Flow

See original GitHub issue

Is your feature request related to a problem? Please describe. As per graphql-java currently we only support subscription functions that return some Publisher (e.g. Reactor Flux). Since we support coroutines for queries/mutations we should also support Flow for subscriptions.

Describe the solution you’d like Support Kotlin Flow type for subscriptions.

Describe alternatives you’ve considered N/A

Additional context N/A

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Reactions:1
  • Comments:8 (5 by maintainers)

github_iconTop GitHub Comments

josephlbarnettcommented, Oct 10, 2019

Would it make sense to have graphql-kotllin provide a class that extends SubscriptionExecutionStrategy to treat Flows similar to how it currently treats Publishers? I think doing so to only support Flows would be somewhat straightforward port of the class, but probably want to be able to support either Flow or Publisher from the same strategy, which may be a little less straighforward to figure out?

josephlbarnettcommented, Feb 28, 2020

note that due to issues like doing flow.asPublisher() in the schema function and then consuming the ExecutionResult’s publisher .asFlow() can have unexpected side effects

Read more comments on GitHub >

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