RPC Support and Tooling

[amerameen]

The following is a detailed list of the missing or incomplete RPC calls that need to be implemented. Each RPC call can be considered complete when the intended functionality is completed, error codes conform to the spec, and a corresponding integration test.

Relevant links related RPC calls:

• https://github.com/w3f/PSPs/blob/master/PSPs/drafts/psp-6.md
• https://github.com/centrifuge/go-substrate-rpc-client

Author RPC calls

• [x] hasSessionKeys
• Substrate reference- has_session_keys
• [x] author_submitAndWatchExtrinsic (pubsub)

BABE RPC calls

• [ ] epochAuthorship
• Substrate reference - epoch_authorship

Chain RPC calls

• [x] #1741
• Substrate reference - subscribe_all_heads

Child State RPC calls

• [x] getKeys
• [ ] getStorage
• [x] getStorageHash
• [x] getStorageSize

Contracts RPC calls

• [ ] call
• [ ] getStorage
• [ ] rentProjection

Engine RPC calls

• [ ] createBlock
• [ ] finalizeBlock

Grandpa RPC calls

• [x] proveFinality
• [x] roundState
• [x] subscribeJustifications

Offchain RPC calls

• [x] localStorageGet
• [x] localStorageSet

Payment RPC calls

• [x] queryInfo

State RPC calls

• [x] getMetadata
• [ ] state_call
• [x] queryStorage
• [x] subscribeRuntimeVersion
• [x] subscribeStorage
• [x] getReadProof
• [x] getRuntimeVersion

Sync State RPC Calls

• [ ] genSyncSpec

System RPC Calls

• [x] accountNextIndex
• [x] addReservedPeer
• [ ] dryRun
• [x] localListenAddresses
• [x] localPeerId
• [x] removeReservedPeer
• [x] syncState

[timwu20]

@P1sar can we clean up this epic? I'm assuming there are duplicates in here.