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* Problem: missing json rpc of eth_feeHistory #685 add oracle backend space ready structure ok refactoring return feehistory data flow ok basefee set gas used ratio computing reward add testing add gas used prepare data fill reward increase coin fixing api add mac add launch gas used ratio ok print element reward workes reward working fix panic value correct remove debugging log tidy up tidy up remove oracle tidy up fix handler crash add unit test tidy up add limit check reformat fix lint fix lint fix lint fix lint Update rpc/ethereum/backend/feebackend.go thanks Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Update rpc/ethereum/backend/feebackend.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Update rpc/ethereum/backend/feebackend.go thanks Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Update rpc/ethereum/backend/feebackend.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> fix compile error split lines remove temporary string conversion return error if gaslimit is 0 move OneFeeHistory to types add comment only err check Update rpc/ethereum/backend/feebackend.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Update rpc/ethereum/backend/feebackend.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> tidy up add feehistory-cap * Apply suggestions from code review * changelog Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze Küllmer <federico.kunze94@gmail.com>
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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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