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chore(rpc): restructure JSON-RPC APIs (evmos#1218)
* move non api methods from eth/api.go to evm_backend: ClientCtx, QueryClient, Ctx, getBlockNumber, getTransactionByBlockAndIndex, doCall * organize eth/api.go into sections and move backend logic to dedicated files * remove unnecesary comment * move resend to the backend * refractor eth api * refractor debug namespace * refactor miner namespace * refactor personal namespace * update transactionReceipt from upstream * update getBlockByNumber from upstream * update getBalance from upstream * update getProof from upstream * update getBalance from upstream * fix linter * remove duplicated import * remove duplicated import * fix backend tests * fix lint * fix duplicated imports * fix linter * reorganize blocks * backend folder refractor * remove unnecessary file * remove duplicate import Co-authored-by: Freddy Caceres <[email protected]> (cherry picked from commit d43386d)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,207 @@ | ||
| package backend | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math" | ||
| "math/big" | ||
|
|
||
| sdkmath "cosmossdk.io/math" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| authtypes "github.com/cosmos/cosmos-sdk/x/auth/types" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/common/hexutil" | ||
| rpctypes "github.com/evmos/ethermint/rpc/types" | ||
| evmtypes "github.com/evmos/ethermint/x/evm/types" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| // GetCode returns the contract code at the given address and block number. | ||
| func (b *Backend) GetCode(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) { | ||
| blockNum, err := b.GetBlockNumber(blockNrOrHash) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| req := &evmtypes.QueryCodeRequest{ | ||
| Address: address.String(), | ||
| } | ||
|
|
||
| res, err := b.queryClient.Code(rpctypes.ContextWithHeight(blockNum.Int64()), req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return res.Code, nil | ||
| } | ||
|
|
||
| // GetProof returns an account object with proof and any storage proofs | ||
| func (b *Backend) GetProof(address common.Address, storageKeys []string, blockNrOrHash rpctypes.BlockNumberOrHash) (*rpctypes.AccountResult, error) { | ||
| blockNum, err := b.GetBlockNumber(blockNrOrHash) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| height := blockNum.Int64() | ||
| _, err = b.GetTendermintBlockByNumber(blockNum) | ||
| if err != nil { | ||
| // Get 'latest' proof if query is in the future | ||
| // this imitates geth behavior | ||
| height = 0 | ||
| } | ||
| ctx := rpctypes.ContextWithHeight(height) | ||
|
|
||
| // if the height is equal to zero, meaning the query condition of the block is either "pending" or "latest" | ||
| if height == 0 { | ||
| bn, err := b.BlockNumber() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if bn > math.MaxInt64 { | ||
| return nil, fmt.Errorf("not able to query block number greater than MaxInt64") | ||
| } | ||
|
|
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| height = int64(bn) | ||
| } | ||
|
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| clientCtx := b.clientCtx.WithHeight(height) | ||
|
|
||
| // query storage proofs | ||
| storageProofs := make([]rpctypes.StorageResult, len(storageKeys)) | ||
|
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||
| for i, key := range storageKeys { | ||
| hexKey := common.HexToHash(key) | ||
| valueBz, proof, err := b.queryClient.GetProof(clientCtx, evmtypes.StoreKey, evmtypes.StateKey(address, hexKey.Bytes())) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // check for proof | ||
| var proofStr string | ||
| if proof != nil { | ||
| proofStr = proof.String() | ||
| } | ||
|
|
||
| storageProofs[i] = rpctypes.StorageResult{ | ||
| Key: key, | ||
| Value: (*hexutil.Big)(new(big.Int).SetBytes(valueBz)), | ||
| Proof: []string{proofStr}, | ||
| } | ||
| } | ||
|
|
||
| // query EVM account | ||
| req := &evmtypes.QueryAccountRequest{ | ||
| Address: address.String(), | ||
| } | ||
|
|
||
| res, err := b.queryClient.Account(ctx, req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // query account proofs | ||
| accountKey := authtypes.AddressStoreKey(sdk.AccAddress(address.Bytes())) | ||
| _, proof, err := b.queryClient.GetProof(clientCtx, authtypes.StoreKey, accountKey) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // check for proof | ||
| var accProofStr string | ||
| if proof != nil { | ||
| accProofStr = proof.String() | ||
| } | ||
|
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||
| balance, ok := sdkmath.NewIntFromString(res.Balance) | ||
| if !ok { | ||
| return nil, errors.New("invalid balance") | ||
| } | ||
|
|
||
| return &rpctypes.AccountResult{ | ||
| Address: address, | ||
| AccountProof: []string{accProofStr}, | ||
| Balance: (*hexutil.Big)(balance.BigInt()), | ||
| CodeHash: common.HexToHash(res.CodeHash), | ||
| Nonce: hexutil.Uint64(res.Nonce), | ||
| StorageHash: common.Hash{}, // NOTE: Ethermint doesn't have a storage hash. TODO: implement? | ||
| StorageProof: storageProofs, | ||
| }, nil | ||
| } | ||
|
|
||
| // GetStorageAt returns the contract storage at the given address, block number, and key. | ||
| func (b *Backend) GetStorageAt(address common.Address, key string, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) { | ||
| blockNum, err := b.GetBlockNumber(blockNrOrHash) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| req := &evmtypes.QueryStorageRequest{ | ||
| Address: address.String(), | ||
| Key: key, | ||
| } | ||
|
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||
| res, err := b.queryClient.Storage(rpctypes.ContextWithHeight(blockNum.Int64()), req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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||
| value := common.HexToHash(res.Value) | ||
| return value.Bytes(), nil | ||
| } | ||
|
|
||
| // GetBalance returns the provided account's balance up to the provided block number. | ||
| func (b *Backend) GetBalance(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (*hexutil.Big, error) { | ||
| blockNum, err := b.GetBlockNumber(blockNrOrHash) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| req := &evmtypes.QueryBalanceRequest{ | ||
| Address: address.String(), | ||
| } | ||
|
|
||
| _, err = b.GetTendermintBlockByNumber(blockNum) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| res, err := b.queryClient.Balance(rpctypes.ContextWithHeight(blockNum.Int64()), req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| val, ok := sdkmath.NewIntFromString(res.Balance) | ||
| if !ok { | ||
| return nil, errors.New("invalid balance") | ||
| } | ||
|
|
||
| // balance can only be negative in case of pruned node | ||
| if val.IsNegative() { | ||
| return nil, errors.New("couldn't fetch balance. Node state is pruned") | ||
| } | ||
|
|
||
| return (*hexutil.Big)(val.BigInt()), nil | ||
| } | ||
|
|
||
| // GetTransactionCount returns the number of transactions at the given address up to the given block number. | ||
| func (b *Backend) GetTransactionCount(address common.Address, blockNum rpctypes.BlockNumber) (*hexutil.Uint64, error) { | ||
| // Get nonce (sequence) from account | ||
| from := sdk.AccAddress(address.Bytes()) | ||
| accRet := b.clientCtx.AccountRetriever | ||
|
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||
| err := accRet.EnsureExists(b.clientCtx, from) | ||
| if err != nil { | ||
| // account doesn't exist yet, return 0 | ||
| n := hexutil.Uint64(0) | ||
| return &n, nil | ||
| } | ||
|
|
||
| includePending := blockNum == rpctypes.EthPendingBlockNumber | ||
| nonce, err := b.getAccountNonce(address, includePending, blockNum.Int64(), b.logger) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| n := hexutil.Uint64(nonce) | ||
| return &n, nil | ||
| } |
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