524 lines
17 KiB
Go
524 lines
17 KiB
Go
package api
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import (
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"bytes"
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"encoding/json"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/rpc/codec"
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"github.com/ethereum/go-ethereum/rpc/shared"
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"github.com/ethereum/go-ethereum/xeth"
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)
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// eth api provider
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// See https://github.com/ethereum/wiki/wiki/JSON-RPC
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type EthApi struct {
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xeth *xeth.XEth
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methods map[string]ethhandler
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codec codec.ApiCoder
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}
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// eth callback handler
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type ethhandler func(*EthApi, *shared.Request) (interface{}, error)
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var (
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ethMapping = map[string]ethhandler{
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"eth_accounts": (*EthApi).Accounts,
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"eth_blockNumber": (*EthApi).BlockNumber,
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"eth_getBalance": (*EthApi).GetBalance,
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"eth_protocolVersion": (*EthApi).ProtocolVersion,
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"eth_coinbase": (*EthApi).Coinbase,
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"eth_mining": (*EthApi).IsMining,
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"eth_gasPrice": (*EthApi).GasPrice,
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"eth_getStorage": (*EthApi).GetStorage,
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"eth_storageAt": (*EthApi).GetStorage,
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"eth_getStorageAt": (*EthApi).GetStorageAt,
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"eth_getTransactionCount": (*EthApi).GetTransactionCount,
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"eth_getBlockTransactionCountByHash": (*EthApi).GetBlockTransactionCountByHash,
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"eth_getBlockTransactionCountByNumber": (*EthApi).GetBlockTransactionCountByNumber,
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"eth_getUncleCountByBlockHash": (*EthApi).GetUncleCountByBlockHash,
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"eth_getUncleCountByBlockNumber": (*EthApi).GetUncleCountByBlockNumber,
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"eth_getData": (*EthApi).GetData,
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"eth_getCode": (*EthApi).GetData,
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"eth_sign": (*EthApi).Sign,
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"eth_sendTransaction": (*EthApi).SendTransaction,
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"eth_transact": (*EthApi).SendTransaction,
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"eth_estimateGas": (*EthApi).EstimateGas,
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"eth_call": (*EthApi).Call,
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"eth_flush": (*EthApi).Flush,
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"eth_getBlockByHash": (*EthApi).GetBlockByHash,
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"eth_getBlockByNumber": (*EthApi).GetBlockByNumber,
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"eth_getTransactionByHash": (*EthApi).GetTransactionByHash,
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"eth_getTransactionByBlockHashAndIndex": (*EthApi).GetTransactionByBlockHashAndIndex,
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"eth_getUncleByBlockHashAndIndex": (*EthApi).GetUncleByBlockHashAndIndex,
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"eth_getUncleByBlockNumberAndIndex": (*EthApi).GetUncleByBlockNumberAndIndex,
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"eth_getCompilers": (*EthApi).GetCompilers,
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"eth_compileSolidity": (*EthApi).CompileSolidity,
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"eth_newFilter": (*EthApi).NewFilter,
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"eth_newBlockFilter": (*EthApi).NewBlockFilter,
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"eth_newPendingTransactionFilter": (*EthApi).NewPendingTransactionFilter,
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"eth_uninstallFilter": (*EthApi).UninstallFilter,
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"eth_getFilterChanges": (*EthApi).GetFilterChanges,
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"eth_getFilterLogs": (*EthApi).GetFilterLogs,
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"eth_getLogs": (*EthApi).GetLogs,
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"eth_hashrate": (*EthApi).Hashrate,
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"eth_getWork": (*EthApi).GetWork,
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"eth_submitWork": (*EthApi).SubmitWork,
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}
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)
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// create new EthApi instance
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func NewEthApi(xeth *xeth.XEth, codec codec.Codec) *EthApi {
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return &EthApi{xeth, ethMapping, codec.New(nil)}
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}
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// collection with supported methods
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func (self *EthApi) Methods() []string {
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methods := make([]string, len(self.methods))
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i := 0
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for k := range self.methods {
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methods[i] = k
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i++
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}
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return methods
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}
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// Execute given request
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func (self *EthApi) Execute(req *shared.Request) (interface{}, error) {
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if callback, ok := self.methods[req.Method]; ok {
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return callback(self, req)
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}
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return nil, shared.NewNotImplementedError(req.Method)
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}
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func (self *EthApi) Accounts(req *shared.Request) (interface{}, error) {
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return self.xeth.Accounts(), nil
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}
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func (self *EthApi) Hashrate(req *shared.Request) (interface{}, error) {
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return newHexNum(self.xeth.HashRate()), nil
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}
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func (self *EthApi) BlockNumber(req *shared.Request) (interface{}, error) {
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return self.xeth.CurrentBlock().Number(), nil
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}
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func (self *EthApi) GetBalance(req *shared.Request) (interface{}, error) {
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args := new(GetBalanceArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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return self.xeth.AtStateNum(args.BlockNumber).BalanceAt(args.Address), nil
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}
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func (self *EthApi) ProtocolVersion(req *shared.Request) (interface{}, error) {
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return self.xeth.EthVersion(), nil
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}
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func (self *EthApi) Coinbase(req *shared.Request) (interface{}, error) {
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return newHexData(self.xeth.Coinbase()), nil
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}
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func (self *EthApi) IsMining(req *shared.Request) (interface{}, error) {
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return self.xeth.IsMining(), nil
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}
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func (self *EthApi) GasPrice(req *shared.Request) (interface{}, error) {
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return newHexNum(xeth.DefaultGasPrice().Bytes()), nil
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}
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func (self *EthApi) GetStorage(req *shared.Request) (interface{}, error) {
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args := new(GetStorageArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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return self.xeth.AtStateNum(args.BlockNumber).State().SafeGet(args.Address).Storage(), nil
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}
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func (self *EthApi) GetStorageAt(req *shared.Request) (interface{}, error) {
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args := new(GetStorageAtArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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return self.xeth.AtStateNum(args.BlockNumber).StorageAt(args.Address, args.Key), nil
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}
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func (self *EthApi) GetTransactionCount(req *shared.Request) (interface{}, error) {
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args := new(GetTxCountArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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count := self.xeth.AtStateNum(args.BlockNumber).TxCountAt(args.Address)
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return newHexNum(big.NewInt(int64(count)).Bytes()), nil
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}
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func (self *EthApi) GetBlockTransactionCountByHash(req *shared.Request) (interface{}, error) {
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args := new(HashArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := NewBlockRes(self.xeth.EthBlockByHash(args.Hash), false)
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if block == nil {
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return nil, nil
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} else {
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return newHexNum(big.NewInt(int64(len(block.Transactions))).Bytes()), nil
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}
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}
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func (self *EthApi) GetBlockTransactionCountByNumber(req *shared.Request) (interface{}, error) {
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args := new(BlockNumArg)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := NewBlockRes(self.xeth.EthBlockByNumber(args.BlockNumber), false)
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if block == nil {
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return nil, nil
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} else {
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return newHexNum(big.NewInt(int64(len(block.Transactions))).Bytes()), nil
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}
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}
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func (self *EthApi) GetUncleCountByBlockHash(req *shared.Request) (interface{}, error) {
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args := new(HashArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByHash(args.Hash)
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br := NewBlockRes(block, false)
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if br == nil {
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return nil, nil
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}
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return newHexNum(big.NewInt(int64(len(br.Uncles))).Bytes()), nil
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}
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func (self *EthApi) GetUncleCountByBlockNumber(req *shared.Request) (interface{}, error) {
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args := new(BlockNumArg)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByNumber(args.BlockNumber)
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br := NewBlockRes(block, false)
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if br == nil {
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return nil, nil
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}
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return newHexNum(big.NewInt(int64(len(br.Uncles))).Bytes()), nil
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}
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func (self *EthApi) GetData(req *shared.Request) (interface{}, error) {
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args := new(GetDataArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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v := self.xeth.AtStateNum(args.BlockNumber).CodeAtBytes(args.Address)
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return newHexData(v), nil
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}
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func (self *EthApi) Sign(req *shared.Request) (interface{}, error) {
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args := new(NewSignArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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v, err := self.xeth.Sign(args.From, args.Data, false)
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if err != nil {
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return nil, err
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}
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return v, nil
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}
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func (self *EthApi) SendTransaction(req *shared.Request) (interface{}, error) {
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args := new(NewTxArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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// nonce may be nil ("guess" mode)
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var nonce string
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if args.Nonce != nil {
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nonce = args.Nonce.String()
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}
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v, err := self.xeth.Transact(args.From, args.To, nonce, args.Value.String(), args.Gas.String(), args.GasPrice.String(), args.Data)
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if err != nil {
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return nil, err
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}
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return v, nil
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}
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func (self *EthApi) EstimateGas(req *shared.Request) (interface{}, error) {
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_, gas, err := self.doCall(req.Params)
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if err != nil {
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return nil, err
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}
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// TODO unwrap the parent method's ToHex call
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if len(gas) == 0 {
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return newHexNum(0), nil
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} else {
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return newHexNum(gas), nil
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}
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}
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func (self *EthApi) Call(req *shared.Request) (interface{}, error) {
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v, _, err := self.doCall(req.Params)
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if err != nil {
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return nil, err
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}
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// TODO unwrap the parent method's ToHex call
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if v == "0x0" {
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return newHexData([]byte{}), nil
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} else {
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return newHexData(common.FromHex(v)), nil
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}
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}
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func (self *EthApi) Flush(req *shared.Request) (interface{}, error) {
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return nil, shared.NewNotImplementedError(req.Method)
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}
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func (self *EthApi) doCall(params json.RawMessage) (string, string, error) {
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args := new(CallArgs)
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if err := self.codec.Decode(params, &args); err != nil {
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return "", "", err
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}
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return self.xeth.AtStateNum(args.BlockNumber).Call(args.From, args.To, args.Value.String(), args.Gas.String(), args.GasPrice.String(), args.Data)
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}
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func (self *EthApi) GetBlockByHash(req *shared.Request) (interface{}, error) {
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args := new(GetBlockByHashArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByHash(args.BlockHash)
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return NewBlockRes(block, args.IncludeTxs), nil
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}
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func (self *EthApi) GetBlockByNumber(req *shared.Request) (interface{}, error) {
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args := new(GetBlockByNumberArgs)
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if err := json.Unmarshal(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByNumber(args.BlockNumber)
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br := NewBlockRes(block, args.IncludeTxs)
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// If request was for "pending", nil nonsensical fields
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if args.BlockNumber == -2 {
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br.BlockHash = nil
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br.BlockNumber = nil
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br.Miner = nil
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br.Nonce = nil
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br.LogsBloom = nil
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}
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return br, nil
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}
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func (self *EthApi) GetTransactionByHash(req *shared.Request) (interface{}, error) {
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args := new(HashArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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tx, bhash, bnum, txi := self.xeth.EthTransactionByHash(args.Hash)
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if tx != nil {
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v := NewTransactionRes(tx)
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// if the blockhash is 0, assume this is a pending transaction
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if bytes.Compare(bhash.Bytes(), bytes.Repeat([]byte{0}, 32)) != 0 {
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v.BlockHash = newHexData(bhash)
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v.BlockNumber = newHexNum(bnum)
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v.TxIndex = newHexNum(txi)
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}
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return v, nil
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}
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return nil, nil
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}
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func (self *EthApi) GetTransactionByBlockHashAndIndex(req *shared.Request) (interface{}, error) {
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args := new(HashIndexArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByHash(args.Hash)
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br := NewBlockRes(block, true)
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if br == nil {
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return nil, nil
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}
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if args.Index >= int64(len(br.Transactions)) || args.Index < 0 {
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return nil, nil
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} else {
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return br.Transactions[args.Index], nil
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}
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}
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func (self *EthApi) GetTransactionByBlockNumberAndIndex(req *shared.Request) (interface{}, error) {
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args := new(BlockNumIndexArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByNumber(args.BlockNumber)
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v := NewBlockRes(block, true)
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if v == nil {
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return nil, nil
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}
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if args.Index >= int64(len(v.Transactions)) || args.Index < 0 {
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// return NewValidationError("Index", "does not exist")
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return nil, nil
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}
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return v.Transactions[args.Index], nil
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}
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func (self *EthApi) GetUncleByBlockHashAndIndex(req *shared.Request) (interface{}, error) {
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args := new(HashIndexArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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br := NewBlockRes(self.xeth.EthBlockByHash(args.Hash), false)
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if br == nil {
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return nil, nil
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}
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if args.Index >= int64(len(br.Uncles)) || args.Index < 0 {
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// return NewValidationError("Index", "does not exist")
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return nil, nil
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}
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return br.Uncles[args.Index], nil
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}
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func (self *EthApi) GetUncleByBlockNumberAndIndex(req *shared.Request) (interface{}, error) {
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args := new(BlockNumIndexArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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block := self.xeth.EthBlockByNumber(args.BlockNumber)
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v := NewBlockRes(block, true)
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if v == nil {
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return nil, nil
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}
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if args.Index >= int64(len(v.Uncles)) || args.Index < 0 {
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return nil, nil
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} else {
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return v.Uncles[args.Index], nil
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}
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}
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func (self *EthApi) GetCompilers(req *shared.Request) (interface{}, error) {
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var lang string
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if solc, _ := self.xeth.Solc(); solc != nil {
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lang = "Solidity"
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}
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c := []string{lang}
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return c, nil
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}
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func (self *EthApi) CompileSolidity(req *shared.Request) (interface{}, error) {
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solc, _ := self.xeth.Solc()
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if solc == nil {
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return nil, shared.NewNotAvailableError(req.Method, "solc (solidity compiler) not found")
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}
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args := new(SourceArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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contracts, err := solc.Compile(args.Source)
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if err != nil {
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return nil, err
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}
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return contracts, nil
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}
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func (self *EthApi) NewFilter(req *shared.Request) (interface{}, error) {
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args := new(BlockFilterArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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id := self.xeth.NewLogFilter(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics)
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return newHexNum(big.NewInt(int64(id)).Bytes()), nil
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}
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func (self *EthApi) NewBlockFilter(req *shared.Request) (interface{}, error) {
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return newHexNum(self.xeth.NewBlockFilter()), nil
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}
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func (self *EthApi) NewPendingTransactionFilter(req *shared.Request) (interface{}, error) {
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return newHexNum(self.xeth.NewTransactionFilter()), nil
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}
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func (self *EthApi) UninstallFilter(req *shared.Request) (interface{}, error) {
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args := new(FilterIdArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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return self.xeth.UninstallFilter(args.Id), nil
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}
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func (self *EthApi) GetFilterChanges(req *shared.Request) (interface{}, error) {
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args := new(FilterIdArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, shared.NewDecodeParamError(err.Error())
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}
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switch self.xeth.GetFilterType(args.Id) {
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case xeth.BlockFilterTy:
|
|
return NewHashesRes(self.xeth.BlockFilterChanged(args.Id)), nil
|
|
case xeth.TransactionFilterTy:
|
|
return NewHashesRes(self.xeth.TransactionFilterChanged(args.Id)), nil
|
|
case xeth.LogFilterTy:
|
|
return NewLogsRes(self.xeth.LogFilterChanged(args.Id)), nil
|
|
default:
|
|
return []string{}, nil // reply empty string slice
|
|
}
|
|
}
|
|
|
|
func (self *EthApi) GetFilterLogs(req *shared.Request) (interface{}, error) {
|
|
args := new(FilterIdArgs)
|
|
if err := self.codec.Decode(req.Params, &args); err != nil {
|
|
return nil, shared.NewDecodeParamError(err.Error())
|
|
}
|
|
|
|
return NewLogsRes(self.xeth.Logs(args.Id)), nil
|
|
}
|
|
|
|
func (self *EthApi) GetLogs(req *shared.Request) (interface{}, error) {
|
|
args := new(BlockFilterArgs)
|
|
if err := self.codec.Decode(req.Params, &args); err != nil {
|
|
return nil, shared.NewDecodeParamError(err.Error())
|
|
}
|
|
return NewLogsRes(self.xeth.AllLogs(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics)), nil
|
|
}
|
|
|
|
func (self *EthApi) GetWork(req *shared.Request) (interface{}, error) {
|
|
self.xeth.SetMining(true, 0)
|
|
return self.xeth.RemoteMining().GetWork(), nil
|
|
}
|
|
|
|
func (self *EthApi) SubmitWork(req *shared.Request) (interface{}, error) {
|
|
args := new(SubmitWorkArgs)
|
|
if err := self.codec.Decode(req.Params, &args); err != nil {
|
|
return nil, shared.NewDecodeParamError(err.Error())
|
|
}
|
|
return self.xeth.RemoteMining().SubmitWork(args.Nonce, common.HexToHash(args.Digest), common.HexToHash(args.Header)), nil
|
|
}
|