Crate mfm_collectors_evm 

EVM collectors.

This crate defines typed adapters over the generic IoCall surface for EVM JSON-RPC reads. It intentionally does NOT perform IO itself.

Examples

use mfm_collectors_evm::{fact_key_for_jsonrpc_call, JsonRpcCall};
use mfm_machine::ids::StateId;

let state_id = StateId::must_new("machine.read.balance".to_string());
let call = JsonRpcCall::new("eth_chainId", serde_json::json!([]));
let key = fact_key_for_jsonrpc_call(&state_id, &call).expect("fact key");

assert!(key.0.starts_with("mfm:evm|state:"));

Structs

EvmIoClient

First-class EVM client wrapper over IoProvider.

JsonRpcCall

Minimal JSON-RPC request shape used by the EVM IO helpers.

Enums

FactKeyDerivationError

Error returned when a fact key cannot be derived from a request.

ParseHexError

Error returned while parsing hex-encoded numeric responses.

Constants

NAMESPACE_EVM

Canonical namespace used for EVM JSON-RPC IoCalls.

Functions

evm_io_call

Wraps a typed JSON-RPC call in the generic IoCall envelope.

fact_key_for_jsonrpc_call

Derives a deterministic fact key for an EVM JSON-RPC request.

parse_u64_hex

Parses a 0x-prefixed quantity string into u64.

parse_u64_hex_value

Parses a JSON value that should contain a 0x-prefixed quantity string.