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：
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

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