1. 引言
源代码：https://github.com/0xPolygonHermez/zkevm-node （Go语言）
Polygon zkEVM节点提供的主要服务模块有：
- 1）JSON-RPC服务
- 2）Sequencer服务
- 3）Aggregator服务
- 4）Synchronizer服务
- 5）Broadcast服务
2. JSON-RPC服务
以太坊JSON-RPC接口 与 Polygon zkEVM中的JSON-RPC接口 对比情况为：
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| 序号 |
RPC接口名 |
以太坊 |
Hermez 2.0 |
备注 |
| 1 |
GetBlockByHash |
√ |
√ |
|
| 2 |
GetBlockByNumber |
√ |
√ |
|
| 3 |
GetBlockTransactionCountByHash |
√ |
√ |
|
| 4 |
GetBlockTransactionCountByNumber |
√ |
√ |
|
| 5 |
getUncleCountByBlockHash |
√ |
√ |
|
| 6 |
getUncleCountByBlockNumber |
√ |
√ |
|
| 7 |
ChainId |
√ |
√ |
|
| 8 |
Syncing |
√ |
√ |
|
| 9 |
Coinbase |
√ |
X |
|
| 10 |
Accounts |
√ |
X |
|
| 11 |
BlockNumber |
√ |
√ |
|
| 12 |
Call |
√ |
√ |
|
| 13 |
EstimateGas |
√ |
√ |
| 14 |
CreateAccessList |
√ |
X |
EIP-2930：新交易类型，需以更贵的方式访问清单（地址或storage keys）外的内容。 |
| 15 |
GasPrice |
√ |
√ |
|
| 16 |
MaxPriorityFeePerGas |
√ |
X |
|
| 17 |
FeeHistory |
√ |
X |
|
| 18 |
NewFilter |
√ |
√ |
|
| 19 |
NewBlockFilter |
√ |
√ |
|
| 20 |
NewPendingTransactionFilter |
√ |
√ |
|
| 21 |
UninstallFilter |
√ |
√ |
|
| 22 |
GetFilterChanges |
√ |
√ |
|
| 23 |
GetFilterLogs |
√ |
√ |
|
| 24 |
GetLogs |
√ |
√ |
|
| 25 |
Mining |
√ |
X |
|
| 26 |
Hashrate |
√ |
X |
|
| 27 |
GetWork |
√ |
X |
|
| 28 |
SubmitWork |
√ |
X |
|
| 29 |
SubmitHashrate |
√ |
X |
|
| 30 |
Sign |
√ |
X |
|
| 31 |
SignTransaction |
√ |
X |
|
| 32 |
GetBalance |
√ |
√ |
|
| 33 |
GetStorageAt |
√ |
√ |
|
| 34 |
GetTransactionCount |
√ |
√ |
|
| 35 |
GetCode |
√ |
√ |
|
| 36 |
GetProof |
√ |
X |
|
| 37 |
SendTransaction |
√ |
X |
|
| 38 |
SendRawTransaction |
√ |
√ |
|
| 39 |
GetTransactionByHash |
√ |
√ |
|
| 40 |
GetTransactionByBlockHashAndIndex |
√ |
√ |
|
| 41 |
GetTransactionByBlockNumberAndIndex |
√ |
√ |
|
| 42 |
GetTransactionReceipt |
√ |
√ |
|
| 43 |
GetCompilers |
√ |
√ |
|
| 44 |
GetUncleByBlockHashAndIndex |
√ |
√ |
|
| 45 |
GetUncleByBlockNumberAndIndex |
√ |
√ |
|
| 46 |
ProtocolVersion |
√ |
√ |
|
Hermez 2.0（zkEVM）除实现了以上与以太坊兼容的RPC接口之外，还额外实现了一些与state交互、与pool交互的接口：
// jsonRPCTxPool contains the methods required to interact with the tx pool.
type jsonRPCTxPool interface {
AddTx(ctx context.Context, tx types.Transaction) error
GetPendingTxs(ctx context.Context, isClaims bool, limit uint64) ([]pool.Transaction, error)
GetGasPrice(ctx context.Context) (uint64, error)
GetPendingTxHashesSince(ctx context.Context, since time.Time) ([]common.Hash, error)
}
// gasPriceEstimator contains the methods required to interact with gas price estimator
type gasPriceEstimator interface {
GetAvgGasPrice(ctx context.Context) (*big.Int, error)
}
// stateInterface gathers the methods required to interact with the state.
type stateInterface interface {
BeginStateTransaction(ctx context.Context) (pgx.Tx, error)
GetLastConsolidatedL2BlockNumber(ctx context.Context, dbTx pgx.Tx) (uint64, error)
GetTransactionByHash(ctx context.Context, transactionHash common.Hash, dbTx pgx.Tx) (*types.Transaction, error)
GetTransactionReceipt(ctx context.Context, transactionHash common.Hash, dbTx pgx.Tx) (*types.Receipt, error)
GetLastL2BlockNumber(ctx context.Context, dbTx pgx.Tx) (uint64, error)
GetLastL2Block(ctx context.Context, dbTx pgx.Tx) (*types.Block, error)
GetLastL2BlockHeader(ctx context.Context, dbTx pgx.Tx) (*types.Header, error)
EstimateGas(transaction *types.Transaction, senderAddress common.Address) (uint64, error)
GetBalance(ctx context.Context, address common.Address, blockNumber uint64, dbTx pgx.Tx) (*big.Int, error)
GetL2BlockByHash(ctx context.Context, hash common.Hash, dbTx pgx.Tx) (*types.Block, error)
GetL2BlockByNumber(ctx context.Context, blockNumber uint64, dbTx pgx.Tx) (*types.Block, error)
GetCode(ctx context.Context, address common.Address, blockNumber uint64, dbTx pgx.Tx) ([]byte, error)
GetStorageAt(ctx context.Context, address common.Address, position *big.Int, blockNumber uint64, dbTx pgx.Tx) (*big.Int, error)
GetSyncingInfo(ctx context.Context, dbTx pgx.Tx) (state.SyncingInfo, error)
GetTransactionByL2BlockHashAndIndex(ctx context.Context, blockHash common.Hash, index uint64, dbTx pgx.Tx) (*types.Transaction, error)
GetTransactionByL2BlockNumberAndIndex(ctx context.Context, blockNumber uint64, index uint64, dbTx pgx.Tx) (*types.Transaction, error)
GetNonce(ctx context.Context, address common.Address, blockNumber uint64, dbTx pgx.Tx) (uint64, error)
GetL2BlockHeaderByNumber(ctx context.Context, blockNumber uint64, dbTx pgx.Tx) (*types.Header, error)
GetL2BlockTransactionCountByHash(ctx context.Context, hash common.Hash, dbTx pgx.Tx) (uint64, error)
GetL2BlockTransactionCountByNumber(ctx context.Context, blockNumber uint64, dbTx pgx.Tx) (uint64, error)
GetLogs(ctx context.Context, fromBlock uint64, toBlock uint64, addresses []common.Address, topics [][]common.Hash, blockHash *common.Hash, since *time.Time, dbTx pgx.Tx) ([]*types.Log, error)
GetL2BlockHashesSince(ctx context.Context, since time.Time, dbTx pgx.Tx) ([]common.Hash, error)
DebugTransaction(ctx context.Context, transactionHash common.Hash, tracer string) (*runtime.ExecutionResult, error)
ProcessUnsignedTransaction(ctx context.Context, tx *types.Transaction, senderAddress common.Address, blockNumber uint64, dbTx pgx.Tx) *runtime.ExecutionResult
IsL2BlockConsolidated(ctx context.Context, blockNumber int, dbTx pgx.Tx) (bool, error)
IsL2BlockVirtualized(ctx context.Context, blockNumber int, dbTx pgx.Tx) (bool, error)
}
type storageInterface interface {
NewLogFilter(filter LogFilter) (uint64, error)
NewBlockFilter() (uint64, error)
NewPendingTransactionFilter() (uint64, error)
GetFilter(filterID uint64) (*Filter, error)
UpdateFilterLastPoll(filterID uint64) error
UninstallFilter(filterID uint64) (bool, error)
}
3. Sequencer服务
当前代码库中，暂未实现permissionless sequencer功能，ProofOfEfficiency.sol合约中也暂未实现registerSequencer等接口。
参考资料
[1] Ethereum JSON-RPC Specification
[2] PoE
[3] zkProver debugging
[4] Hermez 1.5 - Merkle Tree spec
[5] PoE - 1.5
附录：Polygon Hermez 2.0 zkEVM系列博客
转载：https://blog.csdn.net/mutourend/article/details/126409344
