[Milestone] JSON RPC Deprecation

[chair28980]

Milestone: https://github.com/waku-org/pm/milestone/14

Summary

Deprecate nwaku and go-waku JSON RPC API and replace its usage with REST API across the repos (tests).

Epics

• js-waku: [Epic: js-waku] JSON RPC Deprecation #140
• nwaku: [Epic: nwaku] JSON RPC Deprecation #146
• Docs: [Epic: docs] JSON RPC Deprecation #151

[weboko]

On js-waku side we already dropped testing against go-waku and the only way we use JSON RPC is by retrieving some info or making nwaku do something from end-to-end tests that are in place.

It should be safe to switch to REST but there are some risks involved:

• since testing happens from node.js runner - some packages sent might not be able to face issues that would happen in browser (example is the CORS issue bug: access-control-allow-origin should be set to localhost nwaku#2223)
• some needs might not be covered just yet: ability to get some logs / statuses / responses while sending data;

Transition should be cautious and might need some back and forth with nwaku team.

Task for js-waku to work on - waku-org/js-waku#1826

[chair28980]

Scope signed-off during EU-NA pm 2024-02-19.

[chair28980]

@fryorcraken @jm-clius should we add a task here for removing json-rpc spec from RFCs?

[jm-clius]

@chair28980 yes, thank you!