backend

package
v0.2.3-alpha Latest Latest
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 Go to latest Published: Jun 2, 2022 License: LGPL-3.0 Imports: 34 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AllTxLogsFromEvents 

func AllTxLogsFromEvents(events []abci.Event) ([][]*ethtypes.Log, error)

AllTxLogsFromEvents parses all ethereum logs from cosmos events

func ParseTxLogsFromEvent 

func ParseTxLogsFromEvent(event abci.Event) ([]*ethtypes.Log, error)

ParseTxLogsFromEvent parse tx logs from one event

func TxLogsFromEvents 

func TxLogsFromEvents(events []abci.Event, msgIndex int) ([]*ethtypes.Log, error)

TxLogsFromEvents parses ethereum logs from cosmos events for specific msg index

Types

type Backend 

type Backend struct {
	// contains filtered or unexported fields
}

Backend implements the BackendI interface

func NewBackend 

func NewBackend(ctx *server.Context, logger log.Logger, clientCtx client.Context) *Backend

NewBackend creates a new Backend instance for cosmos and ethereum namespaces

func (*Backend) BaseFee 

func (b *Backend) BaseFee(height int64) (*big.Int, error)

BaseFee returns the base fee tracked by the Fee Market module. If the base fee is not enabled globally, the query returns nil. If the London hard fork is not activated at the current height, the query will return nil.

func (*Backend) BlockBloom 

func (b *Backend) BlockBloom(height *int64) (ethtypes.Bloom, error)

BlockBloom query block bloom filter from block results

func (*Backend) BlockByHash 

func (b *Backend) BlockByHash(hash common.Hash) (*ethtypes.Block, error)

BlockByHash returns the block identified by hash.

func (*Backend) BlockByNumber 

func (b *Backend) BlockByNumber(blockNum types.BlockNumber) (*ethtypes.Block, error)

BlockByNumber returns the block identified by number.

func (*Backend) BlockNumber 

func (b *Backend) BlockNumber() (hexutil.Uint64, error)

BlockNumber returns the current block number in abci app state. Because abci app state could lag behind from tendermint latest block, it's more stable for the client to use the latest block number in abci app state than tendermint rpc.

func (*Backend) BloomStatus 

func (b *Backend) BloomStatus() (uint64, uint64)

BloomStatus returns the BloomBitsBlocks and the number of processed sections maintained by the chain indexer.

func (*Backend) ChainConfig 

func (b *Backend) ChainConfig() *params.ChainConfig

ChainConfig returns the latest ethereum chain configuration

func (*Backend) CurrentHeader 

func (b *Backend) CurrentHeader() *ethtypes.Header

CurrentHeader returns the latest block header

func (*Backend) EstimateGas 

func (b *Backend) EstimateGas(args evmtypes.TransactionArgs, blockNrOptional *types.BlockNumber) (hexutil.Uint64, error)

EstimateGas returns an estimate of gas usage for the given smart contract call.

func (*Backend) EthBlockFromTendermint 

func (b *Backend) EthBlockFromTendermint(
	block *tmtypes.Block,
	fullTx bool,
) (map[string]interface{}, error)

EthBlockFromTendermint returns a JSON-RPC compatible Ethereum block from a given Tendermint block and its block result.

func (*Backend) EthBlockFromTm 

func (b *Backend) EthBlockFromTm(block *tmtypes.Block) (*ethtypes.Block, error)

func (*Backend) FeeHistory 

func (b *Backend) FeeHistory(
	userBlockCount rpc.DecimalOrHex,
	lastBlock rpc.BlockNumber,
	rewardPercentiles []float64,
) (*types.FeeHistoryResult, error)

FeeHistory returns data relevant for fee estimation based on the specified range of blocks.

func (*Backend) GetBlockByHash 

func (b *Backend) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error)

GetBlockByHash returns the block identified by hash.

func (*Backend) GetBlockByNumber 

func (b *Backend) GetBlockByNumber(blockNum types.BlockNumber, fullTx bool) (map[string]interface{}, error)

GetBlockByNumber returns the block identified by number.

func (*Backend) GetCoinbase 

func (b *Backend) GetCoinbase() (sdk.AccAddress, error)

GetCoinbase is the address that staking rewards will be send to (alias for Etherbase).

func (*Backend) GetEthereumMsgsFromTendermintBlock 

func (b *Backend) GetEthereumMsgsFromTendermintBlock(block *tmrpctypes.ResultBlock, blockRes *tmrpctypes.ResultBlockResults) []*evmtypes.MsgEthereumTx

GetEthereumMsgsFromTendermintBlock returns all real MsgEthereumTxs from a Tendermint block. It also ensures consistency over the correct txs indexes across RPC endpoints

func (*Backend) GetLogs 

func (b *Backend) GetLogs(hash common.Hash) ([][]*ethtypes.Log, error)

GetLogs returns all the logs from all the ethereum transactions in a block.

func (*Backend) GetLogsByHeight 

func (b *Backend) GetLogsByHeight(height *int64) ([][]*ethtypes.Log, error)

GetLogsByHeight returns all the logs from all the ethereum transactions in a block.

func (*Backend) GetLogsByNumber 

func (b *Backend) GetLogsByNumber(blockNum types.BlockNumber) ([][]*ethtypes.Log, error)

func (*Backend) GetTendermintBlockByHash 

func (b *Backend) GetTendermintBlockByHash(blockHash common.Hash) (*tmrpctypes.ResultBlock, error)

GetTendermintBlockByHash returns a Tendermint format block by block number

func (*Backend) GetTendermintBlockByNumber 

func (b *Backend) GetTendermintBlockByNumber(blockNum types.BlockNumber) (*tmrpctypes.ResultBlock, error)

GetTendermintBlockByNumber returns a Tendermint format block by block number

func (*Backend) GetTransactionByHash 

func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransaction, error)

GetTransactionByHash returns the Ethereum format transaction identified by Ethereum transaction hash

func (*Backend) GetTransactionCount 

func (b *Backend) GetTransactionCount(address common.Address, blockNum types.BlockNumber) (*hexutil.Uint64, error)

GetTransactionCount returns the number of transactions at the given address up to the given block number.

func (*Backend) GetTxByEthHash 

func (b *Backend) GetTxByEthHash(hash common.Hash) (*tmrpctypes.ResultTx, error)

GetTxByEthHash uses `/tx_query` to find transaction by ethereum tx hash TODO: Don't need to convert once hashing is fixed on Tendermint https://github.com/tendermint/tendermint/issues/6539

func (*Backend) GetTxByTxIndex 

func (b *Backend) GetTxByTxIndex(height int64, index uint) (*tmrpctypes.ResultTx, error)

GetTxByTxIndex uses `/tx_query` to find transaction by tx index of valid ethereum txs

func (*Backend) HeaderByHash 

func (b *Backend) HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error)

HeaderByHash returns the block header identified by hash.

func (*Backend) HeaderByNumber 

func (b *Backend) HeaderByNumber(blockNum types.BlockNumber) (*ethtypes.Header, error)

HeaderByNumber returns the block header identified by height.

func (*Backend) PendingTransactions 

func (b *Backend) PendingTransactions() ([]*sdk.Tx, error)

PendingTransactions returns the transactions that are in the transaction pool and have a from address that is one of the accounts this node manages.

func (*Backend) RPCBlockRangeCap 

func (b *Backend) RPCBlockRangeCap() int32

RPCBlockRangeCap defines the max block range allowed for `eth_getLogs` query.

func (*Backend) RPCEVMTimeout 

func (b *Backend) RPCEVMTimeout() time.Duration

RPCEVMTimeout is the global evm timeout for eth-call variants.

func (*Backend) RPCFeeHistoryCap 

func (b *Backend) RPCFeeHistoryCap() int32

RPCFeeHistoryCap is the limit for total number of blocks that can be fetched

func (*Backend) RPCFilterCap 

func (b *Backend) RPCFilterCap() int32

RPCFilterCap is the limit for total number of filters that can be created

func (*Backend) RPCGasCap 

func (b *Backend) RPCGasCap() uint64

RPCGasCap is the global gas cap for eth-call variants.

func (*Backend) RPCLogsCap 

func (b *Backend) RPCLogsCap() int32

RPCLogsCap defines the max number of results can be returned from single `eth_getLogs` query.

func (*Backend) RPCMinGasPrice 

func (b *Backend) RPCMinGasPrice() int64

func (*Backend) RPCTxFeeCap 

func (b *Backend) RPCTxFeeCap() float64

RPCGasCap is the global gas cap for eth-call variants.

func (*Backend) SendTransaction 

func (b *Backend) SendTransaction(args evmtypes.TransactionArgs) (common.Hash, error)

func (*Backend) SetTxDefaults 

func (b *Backend) SetTxDefaults(args evmtypes.TransactionArgs) (evmtypes.TransactionArgs, error)

SetTxDefaults populates tx message with default values in case they are not provided on the args

func (*Backend) SuggestGasTipCap 

func (b *Backend) SuggestGasTipCap(baseFee *big.Int) (*big.Int, error)

SuggestGasTipCap returns the suggested tip cap Although we don't support tx prioritization yet, but we return a positive value to help client to mitigate the base fee changes.

type BackendI 

type BackendI interface {
	CosmosBackend
	EVMBackend
}

BackendI implements the Cosmos and EVM backend.

type CosmosBackend 

type CosmosBackend interface {
}

CosmosBackend implements the functionality shared within cosmos namespaces as defined by Wallet Connect V2: https://docs.walletconnect.com/2.0/json-rpc/cosmos. Implemented by Backend.

type EVMBackend 

type EVMBackend interface {
	// General Ethereum API
	RPCGasCap() uint64            // global gas cap for eth_call over rpc: DoS protection
	RPCEVMTimeout() time.Duration // global timeout for eth_call over rpc: DoS protection
	RPCTxFeeCap() float64         // RPCTxFeeCap is the global transaction fee(price * gaslimit) cap for send-transaction variants. The unit is ether.

	RPCMinGasPrice() int64
	SuggestGasTipCap(baseFee *big.Int) (*big.Int, error)

	// Blockchain API
	BlockNumber() (hexutil.Uint64, error)
	GetTendermintBlockByNumber(blockNum types.BlockNumber) (*tmrpctypes.ResultBlock, error)
	GetTendermintBlockByHash(blockHash common.Hash) (*tmrpctypes.ResultBlock, error)
	GetBlockByNumber(blockNum types.BlockNumber, fullTx bool) (map[string]interface{}, error)
	GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error)
	BlockByNumber(blockNum types.BlockNumber) (*ethtypes.Block, error)
	BlockByHash(blockHash common.Hash) (*ethtypes.Block, error)
	CurrentHeader() *ethtypes.Header
	HeaderByNumber(blockNum types.BlockNumber) (*ethtypes.Header, error)
	HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error)
	PendingTransactions() ([]*sdk.Tx, error)
	GetTransactionCount(address common.Address, blockNum types.BlockNumber) (*hexutil.Uint64, error)
	SendTransaction(args evmtypes.TransactionArgs) (common.Hash, error)
	GetCoinbase() (sdk.AccAddress, error)
	GetTransactionByHash(txHash common.Hash) (*types.RPCTransaction, error)
	GetTxByEthHash(txHash common.Hash) (*tmrpctypes.ResultTx, error)
	GetTxByTxIndex(height int64, txIndex uint) (*tmrpctypes.ResultTx, error)
	EstimateGas(args evmtypes.TransactionArgs, blockNrOptional *types.BlockNumber) (hexutil.Uint64, error)
	BaseFee(height int64) (*big.Int, error)

	// Fee API
	FeeHistory(blockCount rpc.DecimalOrHex, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (*types.FeeHistoryResult, error)

	// Filter API
	BloomStatus() (uint64, uint64)
	GetLogs(hash common.Hash) ([][]*ethtypes.Log, error)
	GetLogsByHeight(height *int64) ([][]*ethtypes.Log, error)
	ChainConfig() *params.ChainConfig
	SetTxDefaults(args evmtypes.TransactionArgs) (evmtypes.TransactionArgs, error)
	GetEthereumMsgsFromTendermintBlock(block *tmrpctypes.ResultBlock, blockRes *tmrpctypes.ResultBlockResults) []*evmtypes.MsgEthereumTx
}

EVMBackend implements the functionality shared within ethereum namespaces as defined by EIP-1474: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1474.md Implemented by Backend.

Source Files

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