paritytech / paritytech/subxt

Feature request: subscribing to storage changes

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#479 3 comments 4 reactions 0 assignees View on GitHub

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Dominant language
Rust
Stars
489
Forks
293
Avg merge
18h 35m
Merged PRs (30d)
3

Description

Substrate provides state_subscribeStorage to subscribe to storage changes. It would be great if subxt could expose this. I'm not sure how the api would look - maybe something like api.subscribe_storage().timestamp().now(). It shouldn't be super difficult to implement, I think, although I'm not sure how listening only to finalized changes could best be implemented.

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with Substrate's state_subscribeStorage entry point and compare its behavior with the proposed api.subscribe_storage().timestamp().now() shape. Define how storage subscriptions should be exposed and how listening only to finalized changes should work; the feature is done when those API and finalization semantics are settled and implemented.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
api, backend-api-design
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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