Add Subscriptions

[AbhijithGanesh]

Motivation

GraphQL has support for event subscriptions, We need a Rust based ORM support that extends GraphQL which extends support for something like a continuous steam of data.

To quote Apollo GraphQL docs:

Like queries, subscriptions enable you to fetch data. Unlike queries, subscriptions are long-lasting operations that can change their result over time. They can maintain an active connection to your GraphQL server (most commonly via WebSocket), enabling the server to push updates to the subscription's result.

Blocked

• Add update mutation #10
• Future: create one/many mutations #9
• Add delete one/many mutations #11

Proposed Solutions

• Implement a solution for Subscriptions based on the following:

Additional Information

Reference:

• Client side reference - React - Apollo Client
• Event based subscription and Relay

[AbhijithGanesh]

@billy1624 I would love to work on this

[billy1624]

Hey @AbhijithGanesh, thanks for the write up!!

async-graphql already has subscription utility where we can use it out of the box

• https://async-graphql.github.io/async-graphql/en/subscription.html

However, as you said, we still need SeaORM to stream the updates or events to be exact.

• [PIP] Event stream sea-orm#1123

[billy1624]

So, this issue is blocked. We need to wait SeaORM to implement the event stream first.

Maybe we can work on GraphQL mutation APIs at the meantime?

[AbhijithGanesh]

@billy1624 Can you maintain a project board for reference, it will be very useful for our developers to keep track of what blocks what ?

[AbhijithGanesh]

I personally think, we should do the Mutation APIs first, then come to subscriptions

[iho]

Do you need any help with that?