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Merge pull request #116 from catalyst-network/core-functionality
EVM updated to extend REVM
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‎crates/catalyst-runtime-evm/Cargo.toml‎

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@@ -4,22 +4,29 @@ version = "0.1.0"
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edition = "2021"
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description = "Ethereum Virtual Machine runtime for Catalyst Network"
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license = "MIT OR Apache-2.0"
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authors = ["Catalyst Team"]
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repository = "https://github.com/catalyst-network/catalyst-node-rust"
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documentation = "https://docs.rs/catalyst-runtime-evm"
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readme = "README.md"
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keywords = ["blockchain", "evm", "ethereum", "catalyst", "runtime"]
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categories = ["cryptography::cryptocurrencies", "development-tools"]
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[dependencies]
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# Core Catalyst dependencies
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catalyst-core = { path = "../catalyst-core" }
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# catalyst-storage = { path = "../catalyst-storage" } # Comment out for now
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# EVM implementation - use compatible versions without problematic features
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# EVM implementation - use compatible versions
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revm = { version = "3.5", default-features = false, features = ["std", "serde"] }
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revm-primitives = { version = "1.3", default-features = false, features = ["std", "serde"] }
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# Ethereum types
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# Ethereum types and utilities
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ethereum-types = "0.14"
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ethabi = "18.0"
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keccak-hash = "0.10"
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rlp = "0.5"
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# Cryptographic functions
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sha2 = "0.10"
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sha3 = "0.10"
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keccak-hash = "0.10"
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# Async support
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tokio = { version = "1.0", features = ["full"] }
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[dev-dependencies]
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tokio-test = "0.4"
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criterion = "0.5"
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tempfile = "3.0"
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env_logger = "0.10"
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[features]
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default = []
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# Optional features that can be enabled later
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default = ["std"]
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std = ["revm/std", "revm-primitives/std"]
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# Optional features for advanced functionality
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optimism = ["revm/optimism"]
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# Remove kzg feature since it's not available
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# kzg = ["revm/blst"]
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ethereum-tests = []
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debug-mode = []
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# Catalyst-specific features
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cross-runtime = []
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confidential-tx = []
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dfs-integration = []
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[[bench]]
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name = "evm_execution"
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harness = false
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[[example]]
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name = "deploy_contract"
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required-features = ["std"]
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[[example]]
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name = "cross_runtime_call"
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required-features = ["cross-runtime"]
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[package.metadata.docs.rs]
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all-features = true
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rustdoc-args = ["--cfg", "docsrs"]

‎crates/catalyst-runtime-evm/README.md‎

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# Catalyst Runtime EVM
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A high-performance Ethereum Virtual Machine runtime for the Catalyst Network, built on top of REVM with Catalyst-specific extensions.
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## Overview
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The Catalyst EVM runtime provides full Ethereum compatibility while adding unique features like cross-runtime calls, distributed file system integration, and confidential transactions. It serves as one of the pluggable runtime environments in Catalyst's multi-runtime architecture.
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## Features
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### 🔗 **Ethereum Compatibility**
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- Full EVM bytecode execution via REVM
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- Support for all Ethereum hard forks (up to Shanghai)
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- Compatible with existing Ethereum tooling (Hardhat, Truffle, Foundry)
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- Standard precompiles (ecrecover, sha256, ripemd160, identity)
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### 🚀 **Catalyst Extensions**
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- **Cross-Runtime Calls**: Execute code in other runtimes (SVM, Native WASM)
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- **DFS Integration**: Store and retrieve files from distributed file system
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- **Confidential Transactions**: Privacy-preserving transactions with zero-knowledge proofs
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- **Dynamic Gas Pricing**: Network-aware fee calculation
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- **Advanced Debugging**: Comprehensive execution tracing
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### ⚡ **Performance**
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- Built on REVM for maximum performance
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- Optimized gas metering
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- Efficient state management
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- Concurrent execution support
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## Architecture
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```
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┌─────────────────────────────────────────┐
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│ Catalyst EVM Runtime │
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├─────────────────────────────────────────┤
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│ ┌─────────────┐ ┌─────────────────┐ │
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│ │ REVM │ │ Catalyst │ │
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│ │ Core │ │ Extensions │ │
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│ │ │ │ │ │
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│ │ • Opcodes │ │ • Cross-Runtime │ │
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│ │ • Gas │ │ • DFS Ops │ │
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│ │ • Storage │ │ • Confidential │ │
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│ └─────────────┘ └─────────────────┘ │
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├─────────────────────────────────────────┤
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│ Catalyst Database │
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└─────────────────────────────────────────┘
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```
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## Usage
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### Basic Setup
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```rust
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use catalyst_runtime_evm::{CatalystEvmRuntime, CatalystEvmConfig, CatalystFeatures};
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// Configure the runtime
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let config = CatalystEvmConfig {
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evm_config: EvmConfig {
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chain_id: 31337,
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block_gas_limit: 30_000_000,
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base_fee: U256::from(1_000_000_000u64),
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enable_eip1559: true,
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enable_london: true,
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enable_berlin: true,
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max_code_size: 49152,
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view_gas_limit: 50_000_000,
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},
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catalyst_features: CatalystFeatures {
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cross_runtime_enabled: true,
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confidential_tx_enabled: false,
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dfs_integration: true,
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catalyst_gas_model: true,
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},
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};
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// Create the runtime
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let database = CatalystDatabase::new();
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let mut runtime = CatalystEvmRuntime::new(database, config);
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```
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### Execute a Transaction
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```rust
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use catalyst_runtime_evm::{EvmTransaction, BlockEnv};
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// Create a transaction
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let tx = EvmTransaction {
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from: Address::from_str("0x742d35Cc6527C3c7Bb91B6B4d0e71b46C7E3e8F4").unwrap(),
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to: Some(Address::from_str("0x8ba1f109551bD432803012645Hac136c2Bb25F00c").unwrap()),
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value: U256::from(1_000_000_000_000_000_000u64), // 1 ETH
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data: vec![],
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gas_limit: 21000,
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gas_price: U256::from(20_000_000_000u64), // 20 gwei
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gas_priority_fee: Some(U256::from(1_000_000_000u64)), // 1 gwei tip
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nonce: 0,
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chain_id: 31337,
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access_list: None,
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};
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// Set up block environment
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let block_env = BlockEnv {
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number: U256::from(1),
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coinbase: Address::zero(),
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timestamp: U256::from(1640995200), // 2022-01-01
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gas_limit: U256::from(30_000_000),
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basefee: U256::from(1_000_000_000u64),
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difficulty: U256::zero(),
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prevrandao: Some(H256::random().into()),
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};
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// Execute the transaction
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let result = runtime.execute_transaction(&tx, &block_env).await?;
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if result.success() {
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println!("Transaction executed successfully!");
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println!("Gas used: {}", result.gas_used());
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println!("Return data: {:?}", result.return_data());
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} else {
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println!("Transaction failed");
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}
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```
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### Deploy a Contract
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```rust
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use catalyst_runtime_evm::ContractDeployer;
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let mut deployer = ContractDeployer::new();
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// Deploy a simple contract
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let bytecode = hex::decode("608060405234801561001057600080fd5b50...")?;
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let constructor_args = vec![];
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let contract_address = deployer.deploy_contract(
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deployer_address,
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bytecode,
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constructor_args,
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None, // Use CREATE instead of CREATE2
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)?;
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println!("Contract deployed at: {:?}", contract_address);
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```
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### Cross-Runtime Calls
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```rust
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// Call Solana runtime from EVM contract
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let cross_runtime_call = CrossRuntimeCall {
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target_runtime: RuntimeType::SVM,
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method: "transfer".to_string(),
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parameters: serde_json::to_vec(&transfer_params)?,
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gas_used: 0, // Will be calculated during execution
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};
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// This would be triggered by a precompile call in your Solidity contract
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```
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## Testing
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Run the test suite:
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```bash
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cargo test
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```
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Run with logging:
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```bash
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RUST_LOG=debug cargo test -- --nocapture
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```
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Benchmark performance:
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```bash
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cargo bench
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```
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## Configuration Options
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### EVM Configuration
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| Option | Default | Description |
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|--------|---------|-------------|
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| `chain_id` | 31337 | Network chain identifier |
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| `block_gas_limit` | 30,000,000 | Maximum gas per block |
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| `base_fee` | 1 gwei | Base fee for EIP-1559 |
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| `max_code_size` | 48KB | Maximum contract size |
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### Catalyst Features
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| Feature | Default | Description |
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|---------|---------|-------------|
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| `cross_runtime_enabled` | false | Enable calls to other runtimes |
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| `confidential_tx_enabled` | false | Enable privacy features |
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| `dfs_integration` | false | Enable distributed file system |
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| `catalyst_gas_model` | false | Use Catalyst dynamic pricing |
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## Precompiles
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### Standard Ethereum Precompiles
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- `0x01`: ECRECOVER - Elliptic curve signature recovery
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- `0x02`: SHA256 - SHA-256 hash function
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- `0x03`: RIPEMD160 - RIPEMD-160 hash function
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- `0x04`: IDENTITY - Identity function (data copy)
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### Catalyst Extension Precompiles
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- `0x1000`: CROSS_RUNTIME_CALL - Call other runtime environments
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- `0x1001`: DFS_STORE - Store files in distributed file system
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- `0x1002`: DFS_RETRIEVE - Retrieve files from DFS
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- `0x1003`: COMMITMENT_VERIFY - Verify confidential transaction proofs
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## Integration with Catalyst Consensus
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The EVM runtime integrates seamlessly with Catalyst's collaborative consensus:
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1. **Transaction Collection**: Consensus producers collect pending transactions
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2. **Execution**: EVM runtime processes transactions in deterministic order
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3. **State Updates**: Results are committed to the global state
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4. **Verification**: Other producers verify execution results
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5. **Finalization**: Consensus finalizes the new state
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## Performance Characteristics
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- **Transaction Throughput**: 1000+ TPS (depending on complexity)
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- **Gas Costs**: Compatible with Ethereum mainnet pricing
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- **Memory Usage**: ~100MB base + state size
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- **Cold Start Time**: <100ms
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- **Cross-Runtime Call Overhead**: ~5000 gas
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## Development
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### Building
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```bash
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cargo build --release
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```
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### Running Tests
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```bash
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# Unit tests
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cargo test
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# Integration tests
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cargo test --test integration
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# With coverage
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cargo tarpaulin --out Html
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```
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### Contributing
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1. Fork the repository
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2. Create a feature branch
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3. Add tests for new functionality
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4. Ensure all tests pass
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5. Submit a pull request
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### Code Style
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This crate follows standard Rust conventions:
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```bash
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# Format code
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cargo fmt
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# Check for issues
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cargo clippy
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# Security audit
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cargo audit
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```
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## Roadmap
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### Phase 1 (Current)
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- ✅ Basic EVM execution via REVM
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- ✅ Gas metering and fee calculation
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- ✅ Contract deployment support
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- ✅ Standard precompiles
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### Phase 2
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- 🔄 Cross-runtime communication
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- 🔄 DFS integration
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- 🔄 Advanced debugging tools
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- 🔄 Performance optimizations
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### Phase 3
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- ⏳ Confidential transactions
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- ⏳ Zero-knowledge proof integration
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- ⏳ Enterprise features
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- ⏳ Additional EVM improvements
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## Security Considerations
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- **Sandboxing**: Each execution is isolated
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- **Gas Limits**: Prevent infinite loops and DoS attacks
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- **Memory Safety**: Rust's memory safety prevents buffer overflows
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- **Deterministic Execution**: Consistent results across all nodes
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- **Access Controls**: Precompiles validate permissions
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## License
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This project is licensed under MIT OR Apache-2.0.
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## Links
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- [Catalyst Network](https://github.com/catalyst-network)
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- [REVM](https://github.com/bluealloy/revm)
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- [Ethereum Yellow Paper](https://ethereum.github.io/yellowpaper/paper.pdf)
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- [EIP Specifications](https://eips.ethereum.org/)

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