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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| package backend | ||
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| import ( | ||
| "context" | ||
| "math/big" | ||
| "time" | ||
|
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| "github.com/cosmos/cosmos-sdk/client" | ||
| "github.com/cosmos/cosmos-sdk/server" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/common/hexutil" | ||
| ethtypes "github.com/ethereum/go-ethereum/core/types" | ||
| "github.com/ethereum/go-ethereum/params" | ||
| "github.com/ethereum/go-ethereum/rpc" | ||
| "github.com/tendermint/tendermint/libs/log" | ||
| tmrpctypes "github.com/tendermint/tendermint/rpc/core/types" | ||
| "github.com/tharsis/ethermint/rpc/types" | ||
| "github.com/tharsis/ethermint/server/config" | ||
| ethermint "github.com/tharsis/ethermint/types" | ||
| evmtypes "github.com/tharsis/ethermint/x/evm/types" | ||
| ) | ||
|
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| // BackendI implements the Cosmos and EVM backend. | ||
| type BackendI interface { // nolint: revive | ||
| CosmosBackend | ||
| EVMBackend | ||
| } | ||
|
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| // 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 CosmosBackend interface { | ||
| // TODO: define | ||
| // GetAccounts() | ||
| // SignDirect() | ||
| // SignAmino() | ||
| } | ||
|
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| // 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. | ||
| 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. | ||
|
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| RPCMinGasPrice() int64 | ||
| SuggestGasTipCap(baseFee *big.Int) (*big.Int, error) | ||
|
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| // 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) | ||
|
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| // Fee API | ||
| FeeHistory(blockCount rpc.DecimalOrHex, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (*types.FeeHistoryResult, error) | ||
|
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| // 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 | ||
| } | ||
|
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| var _ BackendI = (*Backend)(nil) | ||
|
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| // Backend implements the BackendI interface | ||
| type Backend struct { | ||
| ctx context.Context | ||
| clientCtx client.Context | ||
| queryClient *types.QueryClient // gRPC query client | ||
| logger log.Logger | ||
| chainID *big.Int | ||
| cfg config.Config | ||
| } | ||
|
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| // NewBackend creates a new Backend instance for cosmos and ethereum namespaces | ||
| func NewBackend(ctx *server.Context, logger log.Logger, clientCtx client.Context) *Backend { | ||
| chainID, err := ethermint.ParseChainID(clientCtx.ChainID) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
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| appConf := config.GetConfig(ctx.Viper) | ||
|
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| return &Backend{ | ||
| ctx: context.Background(), | ||
| clientCtx: clientCtx, | ||
| queryClient: types.NewQueryClient(clientCtx), | ||
| logger: logger.With("module", "backend"), | ||
| chainID: chainID, | ||
| cfg: appConf, | ||
| } | ||
| } |
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