Implement /pallets endpoints

[emostov]

Implementing one of these would be good exprience for someone looking to learn more about polkadot-js and this service.

• /pallets
• /pallets/{palletId}/constants
• /pallets/{palletId}/constants/{constantId}
• /pallets/{palletId}/dispatchables
• /pallets/{palletId}/dispatchables/{dispatchableId}
• /pallets/{palletId}/errors
• /pallets/{palletId}/errors/{errorId}
• /pallets/{palletId}/events
• /pallets/{palletId}/events/{eventId}
• /pallets/{palletId}/storage

[danforbes]

Zeke, would the solution to this Issue amount to reading the metadata based on the user-provided palletId, etc and simply returning the correct value?

[emostov]

@danforbes, essentially but filtering out modules from the metadata that do no include the item type (i.e. filtering out modules that do no include storage items if the user requests /pallets/{palletId}/storage)

There will likely also be some slight reorganization and or derived information added to the metadata or the exact item retrieved.

[ltfschoen]

are you able to forecast when would /pallets/democracy/storage/ReferendumInfoOf may be implemented by? is anyone working on it already?

[emostov]

@ltfschoen This is already implemented

[ltfschoen]

@ltfschoen This is already implemented

yes i understand that the democracy pallet is implemented into Substrate itself,

but where is it implemented in this sidecare repository? when would it be specifically implemented into this sidecar repository. the democracy pallet isn't included in either the /controllers or /services folders of this repository. isn't this where it would be implemented?

currently if i run curl -s http://0.0.0.0:8080 | jq the response does not include any democracy pallet paths

[emostov]

The path for what you are asking for is already implemented as pallets/{palletId}/storage/{storageItemId}. Please consult the swagger docs for more info on the endpoint: https://paritytech.github.io/substrate-api-sidecar/dist/

[ltfschoen]

thanks, i see. i guess it would have helped if i actually tried it properly. when i run curl -s http://0.0.0.0:8080 | jq it does show the endpoints:

    {
      "path": "/pallets/:palletId/storage/:storageItemId",
      "method": "get"
    },
    {
      "path": "/pallets/:palletId/storage/",
      "method": "get"
    },

and it get this response:

➜  ~ curl -s http://0.0.0.0:8080/pallets/democracy/storage/ | jq
{
  "code": 400,
  "message": "\"democracy\" was not recognized as a queryable pallet.",
..
}

so the problem i have is that my runtime doesn't implement the democracy module yet

[IkerAlus]

My understanding is that this issue is already close with #1209 , #1210 , #1204 and #1176