Alloy Reth State DB provider

This repository illustrates how the StateProviderFactory from reth can be implemented with alloy-rs to fetch all state using RPC. This can be useful to not be dependent on a real database when testing reth ExEx.

Remarks

There is no debug_codeByHash implemented currently (see feat(rpc): debug_codeByHash #14479). But since revm will first call basic_account, we can cache it and return it when bytecode_by_hash is called.

Currently, this repos purpose as copy/paste reference and not as library. Not all functions are implemented.

Example

See tests in src/alloy_reth_provider.rs for an example.

// Init the provider
let provider = ProviderBuilder::new().on_http("https://eth.merkle.io".parse().unwrap());
// Init the db provider
let db_provider = AlloyRethProvider::new(provider);
// Use the StateProviderFactory
let state = db_provider.state_by_block_id(BlockId::number(16148323)).unwrap();

Acknowledgements

Many, many thanks to the team of reth and alloy-rs for the awesome work they do. Some parts of the trait implementation are taken from reth. Also, many thanks to revm. The alloy_db part is a copy/paste from revm because this part is not included in the latest revm version, and it makes it easier to be in sync with the latest Alloy version.

License

This project is licensed under the Apache 2.0 or MIT. The part in alloy_db is licensed as revm only under MIT.