What is the chance to add Subscription ?

[SebaBoler]

Hey, your client works perfect with Query and Mutation.
Its any chance to add Subscription support >>??

[ssshah86]

Thanks. This is a good suggestion. I will look into it. The newer python versions support async out of the box. I am not 100% familiar with subscribe, but I imagine passing an async iterable to a call back function.

[SebaBoler]

If you need i can create server GraphQL with few subscription to test?

[ssshah86]

That would be nice thanks. This might take me some time. If anyone would like to contribute I'm happy to review.

[SebaBoler]

Any chance to write anything in actual month??

[ssshah86]

Yea I can. Can you get the test server up?

[SebaBoler]

ofc, give me 2 days. I will send info

[ghost]

Any updates on the issue?

[ssshah86]

I haven't had any time to work on this, but I am still waiting for the test server info.

[waterdrop01]

Websocket support would indeed be great, so we can have subscriptions :)

[ssshah86]

Can you provide more details on how you would like to use a subscription API? It will help me determine the best interface.

[waterdrop01]

Sorry I fear I'm not familiar enough with Python and its async library to provide a relevant feedback in API design.

In JS, this doc shows how subscription client is created, and here is the subscription API:

apolloClient.subscribe({
  query: gql`
    subscription onNewItem {
        newItemCreated {
            id
        }
    }`,
  variables: {}
}).subscribe({
  next (data) {
    // Notify your application with the new arrived data
  }
});

Also, you may have a look at this Python gql client that apparently supports subscriptions: https://github.com/tdip/gql-subscriptions/tree/develop

[ssshah86]

Thanks, this is helpful. I wrote something far simpler than tdip's gql subscriptions package. I also use websockets, but the problem is that the connection must be kept alive with a while True statement. I've posted the question here python-websockets/websockets#581

I'm thinking of keeping the API very basic so the keep-alive problem is transferred to the developer for now. The only use case I'm testing against is whenever a subscription is received, the payload is printed. I can commit the code this weekend.