Rollkit currently supports ABCI 2.0 (execution.go) for execution. This work will expand rollkit to support different execution engines by defining a common execution interface (via go-execution) which can be implemented by different execution engines such as ABCI (go-execution-abci), EVM (go-execution-evm), etc.

Details:

• The execution interface (go-execution) can support GRPC (similar to go-sequencing and go-da)
• The interface itself can be inspired by other works such as astria's execution api, omni's octane, berachain's beaconkit, and many more.
• The exact methods in the interface still needs to be determined. But, astria's reference is here.

Tasks

• Create go-execution repo with ABCI 2.0 methods as interface to begin with.
• Add grpc proxy and dummy execution implementation along with tests go-execution repo
• Create go-execution-abci and refactor code from rollkit's execution.go to this repo
• Refactor rollkit to use go-execution interface and go-execution-abci implementation via grpc endpoint
• https://github.com/gupadhyaya/go-execution-evm

Execution API

go-execution

• Define Go interface go-execution#10
• Write comprehensive go-doc go-execution#11
• Create gRPC proxy client and server implementation go-execution#12
• Define sentinel errors go-execution#17
• Remove JSON-RPC proxy go-execution#34

Testing

• Create mock using mockery go-execution#13
• Create dummy implmementation of Execution API go-execution#14
• Create reusable test suite go-execution#15
  • Implement smoke tests go-execution#16
• Improve dummy implementation go-execution#24
• Use contexts with timeouts in tests go-execution#33

go-execution-evm

• Create/move repository
• Setup repository
• Establish EVM connection using engine API go-execution-evm#1
• Create empty implementation of go-execution API go-execution-evm#2
• Implement InitChain method go-execution-evm#3
• Implement GetTxs method go-execution-evm#4
• Implement ExecuteTxs method go-execution-evm#5
• Implement SetFinal method go-execution-evm#6
• Create binary go-execution-evm#12
• refactor: move eth and engine client Dial to start method go-execution-evm#17

Testing

• Setup automated testing go-execution-evm#7
• Run reusable test suite from go-execution go-execution-evm#8
• Implementation-specific unit tests go-execution-evm#9
• test: generate JWT token in tests go-execution-evm#15
• ci: resolve docker client/server compatibility issue go-execution-evm#18

go-execution-cosmos-sdk

• Implement InitChain
• Implement GetTxs
  • Re-import latest ABCI mempool implementation from cometbft
• Implement ExecuteTxs
• Implement SetFinal
• Implement cometbft APIs
  • Identify what has to be exposed from rollkit via RPC

Testing

• Setup automated testing
• Run reusable test suite from go-execution
• Implementation-specific unit tests

rollkit

• Refactor Node interface #1896
• Clean up FullNode #1897
• Remove FullClient #1898
• Clean up LightNode #1899
• Remove LightClient #1900
• Cleanup Store #1901
• Refactor or rewrite block.Manager #1902
• Implement equivalent of BaseService #1903
• Remove mempool #1904
• Remove existing RPCs #1905
• Cleanup config package #1906
• Cleanup proto directory #1907
• [EPIC] Remove cometbft dependencies #1125
• Update run node command #1908
• New genesis handling #1909
• docs: Create ADR describing Execution API #1931

Testing

• Figure out: re-use vs re-write integration tests

The list above may get outdated; please check the Exec API project board for reference.