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Problem: missing json rpc of eth_feeHistory #685 #734
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| package backend | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math/big" | ||
| "sort" | ||
|
|
||
| "github.com/ethereum/go-ethereum/common/hexutil" | ||
| "github.com/ethereum/go-ethereum/rpc" | ||
| tmrpctypes "github.com/tendermint/tendermint/rpc/core/types" | ||
| rpctypes "github.com/tharsis/ethermint/rpc/ethereum/types" | ||
| evmtypes "github.com/tharsis/ethermint/x/evm/types" | ||
| ) | ||
|
|
||
| type ( | ||
| txGasAndReward struct { | ||
| gasUsed uint64 | ||
| reward *big.Int | ||
| } | ||
| sortGasAndReward []txGasAndReward | ||
| ) | ||
|
|
||
| func (s sortGasAndReward) Len() int { return len(s) } | ||
| func (s sortGasAndReward) Swap(i, j int) { | ||
| s[i], s[j] = s[j], s[i] | ||
| } | ||
|
|
||
| func (s sortGasAndReward) Less(i, j int) bool { | ||
| return s[i].reward.Cmp(s[j].reward) < 0 | ||
| } | ||
|
|
||
| // output: targetOneFeeHistory | ||
| func (e *EVMBackend) processBlock( | ||
| tendermintBlock *tmrpctypes.ResultBlock, | ||
| ethBlock *map[string]interface{}, | ||
| rewardPercentiles []float64, | ||
| tendermintBlockResult *tmrpctypes.ResultBlockResults, | ||
| targetOneFeeHistory *rpctypes.OneFeeHistory) error { | ||
| blockHeight := tendermintBlock.Block.Height | ||
| blockBaseFee, err := e.BaseFee(blockHeight) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // set basefee | ||
| targetOneFeeHistory.BaseFee = blockBaseFee | ||
|
|
||
| // set gasused ratio | ||
| gasLimitUint64 := (*ethBlock)["gasLimit"].(hexutil.Uint64) | ||
| gasUsedBig := (*ethBlock)["gasUsed"].(*hexutil.Big) | ||
| gasusedfloat, _ := new(big.Float).SetInt(gasUsedBig.ToInt()).Float64() | ||
|
|
||
| if gasLimitUint64 <= 0 { | ||
| return fmt.Errorf("gasLimit of block height %d should be bigger than 0 , current gaslimit %d", blockHeight, gasLimitUint64) | ||
| } | ||
|
|
||
| gasUsedRatio := gasusedfloat / float64(gasLimitUint64) | ||
| blockGasUsed := gasusedfloat | ||
| targetOneFeeHistory.GasUsedRatio = gasUsedRatio | ||
|
|
||
| rewardCount := len(rewardPercentiles) | ||
| targetOneFeeHistory.Reward = make([]*big.Int, rewardCount) | ||
| for i := 0; i < rewardCount; i++ { | ||
| targetOneFeeHistory.Reward[i] = big.NewInt(2000) | ||
| } | ||
|
|
||
| // check tendermintTxs | ||
| tendermintTxs := tendermintBlock.Block.Txs | ||
| tendermintTxResults := tendermintBlockResult.TxsResults | ||
| tendermintTxCount := len(tendermintTxs) | ||
| sorter := make(sortGasAndReward, tendermintTxCount) | ||
|
|
||
| for i := 0; i < tendermintTxCount; i++ { | ||
| eachTendermintTx := tendermintTxs[i] | ||
| eachTendermintTxResult := tendermintTxResults[i] | ||
|
|
||
| tx, err := e.clientCtx.TxConfig.TxDecoder()(eachTendermintTx) | ||
| if err != nil { | ||
| e.logger.Debug("failed to decode transaction in block", "height", blockHeight, "error", err.Error()) | ||
| continue | ||
| } | ||
| txGasUsed := uint64(eachTendermintTxResult.GasUsed) | ||
| for _, msg := range tx.GetMsgs() { | ||
| ethMsg, ok := msg.(*evmtypes.MsgEthereumTx) | ||
| if !ok { | ||
| continue | ||
| } | ||
| tx := ethMsg.AsTransaction() | ||
| reward := tx.EffectiveGasTipValue(blockBaseFee) | ||
| sorter[i] = txGasAndReward{gasUsed: txGasUsed, reward: reward} | ||
| break | ||
| } | ||
| } | ||
| sort.Sort(sorter) | ||
|
|
||
| var txIndex int | ||
| sumGasUsed := uint64(0) | ||
| if len(sorter) > 0 { | ||
| sumGasUsed = sorter[0].gasUsed | ||
| } | ||
| for i, p := range rewardPercentiles { | ||
| thresholdGasUsed := uint64(blockGasUsed * p / 100) | ||
| for sumGasUsed < thresholdGasUsed && txIndex < tendermintTxCount-1 { | ||
| txIndex++ | ||
| sumGasUsed += sorter[txIndex].gasUsed | ||
| } | ||
|
|
||
| chosenReward := big.NewInt(0) | ||
| if 0 <= txIndex && txIndex < len(sorter) { | ||
| chosenReward = sorter[txIndex].reward | ||
| } | ||
| targetOneFeeHistory.Reward[i] = chosenReward | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (e *EVMBackend) FeeHistory( | ||
| userBlockCount rpc.DecimalOrHex, // number blocks to fetch, maximum is 100 | ||
| lastBlock rpc.BlockNumber, // the block to start search , to oldest | ||
| rewardPercentiles []float64, // percentiles to fetch reward | ||
| ) (*rpctypes.FeeHistoryResult, error) { | ||
| blockEnd := int64(lastBlock) | ||
|
|
||
| if blockEnd <= 0 { | ||
| blockNumber, err := e.BlockNumber() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| blockEnd = int64(blockNumber) | ||
| } | ||
| userBlockCountInt := int64(userBlockCount) | ||
| maxBlockCount := int64(e.cfg.JSONRPC.FeeHistoryCap) | ||
| if userBlockCountInt > maxBlockCount { | ||
| return nil, fmt.Errorf("FeeHistory user block count %d higher than %d", userBlockCountInt, maxBlockCount) | ||
| } | ||
| blockStart := blockEnd - userBlockCountInt | ||
| if blockStart < 0 { | ||
| blockStart = 0 | ||
| } | ||
|
|
||
| blockCount := blockEnd - blockStart | ||
|
|
||
| oldestBlock := (*hexutil.Big)(big.NewInt(blockStart)) | ||
|
|
||
| // prepare space | ||
| reward := make([][]*hexutil.Big, blockCount) | ||
| rewardcount := len(rewardPercentiles) | ||
| for i := 0; i < int(blockCount); i++ { | ||
| reward[i] = make([]*hexutil.Big, rewardcount) | ||
| } | ||
| thisBaseFee := make([]*hexutil.Big, blockCount) | ||
| thisGasUsedRatio := make([]float64, blockCount) | ||
|
|
||
| // fetch block | ||
| for blockID := blockStart; blockID < blockEnd; blockID++ { | ||
| index := int32(blockID - blockStart) | ||
| // eth block | ||
| ethBlock, err := e.GetBlockByNumber(rpctypes.BlockNumber(blockID), true) | ||
| if ethBlock == nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // tendermint block | ||
| tendermintblock, err := e.GetTendermintBlockByNumber(rpctypes.BlockNumber(blockID)) | ||
| if tendermintblock == nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // tendermint block result | ||
| tendermintBlockResult, err := e.clientCtx.Client.BlockResults(e.ctx, &tendermintblock.Block.Height) | ||
| if tendermintBlockResult == nil { | ||
| e.logger.Debug("block result not found", "height", tendermintblock.Block.Height, "error", err.Error()) | ||
| return nil, err | ||
| } | ||
|
|
||
| onefeehistory := rpctypes.OneFeeHistory{} | ||
| err = e.processBlock(tendermintblock, ðBlock, rewardPercentiles, tendermintBlockResult, &onefeehistory) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // copy | ||
| thisBaseFee[index] = (*hexutil.Big)(onefeehistory.BaseFee) | ||
| thisGasUsedRatio[index] = onefeehistory.GasUsedRatio | ||
| for j := 0; j < rewardcount; j++ { | ||
| reward[index][j] = (*hexutil.Big)(onefeehistory.Reward[j]) | ||
| } | ||
| } | ||
|
|
||
| feeHistory := rpctypes.FeeHistoryResult{ | ||
| OldestBlock: oldestBlock, | ||
| Reward: reward, | ||
| BaseFee: thisBaseFee, | ||
| GasUsedRatio: thisGasUsedRatio, | ||
| } | ||
| return &feeHistory, nil | ||
| } | ||
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I don't understand the purpose of this break here, are we only supporting 1
MsgEthereumTxmessage?