Merge pull request #225 from cerc-io/ian_dev

Fall-through post-London endpoints

pkg/eth/api.go

@@ -480,6 +480,84 @@ func (pea *PublicEthAPI) GetRawTransactionByHash(ctx context.Context, hash commo
 	return nil, err
 }
 
+// accessListResult returns an optional accesslist
+// Its the result of the `debug_createAccessList` RPC call.
+// It contains an error if the transaction itself failed.
+type accessListResult struct {
+	Accesslist *types.AccessList `json:"accessList"`
+	Error      string            `json:"error,omitempty"`
+	GasUsed    hexutil.Uint64    `json:"gasUsed"`
+}
+
+// CreateAccessList creates a EIP-2930 type AccessList for the given transaction.
+// Reexec and BlockNrOrHash can be specified to create the accessList on top of a certain state.
+func (pea *PublicEthAPI) CreateAccessList(ctx context.Context, args TransactionArgs, blockNrOrHash *rpc.BlockNumberOrHash) (*accessListResult, error) {
+	if pea.rpc != nil {
+		var res *accessListResult
+		if err := pea.rpc.CallContext(ctx, &res, "eth_createAccessList", args, blockNrOrHash); err != nil {
+			return nil, err
+		}
+		return res, nil
+	}
+	return nil, RequiresProxyError{method: "eth_createAccessList"}
+}
+
+type feeHistoryResult struct {
+	OldestBlock  *hexutil.Big     `json:"oldestBlock"`
+	Reward       [][]*hexutil.Big `json:"reward,omitempty"`
+	BaseFee      []*hexutil.Big   `json:"baseFeePerGas,omitempty"`
+	GasUsedRatio []float64        `json:"gasUsedRatio"`
+}
+
+// FeeHistory returns the fee market history.
+func (pea *PublicEthAPI) FeeHistory(ctx context.Context, blockCount rpc.DecimalOrHex, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (*feeHistoryResult, error) {
+	if pea.rpc != nil {
+		var res *feeHistoryResult
+		if err := pea.rpc.CallContext(ctx, &res, "eth_feeHistory", blockCount, lastBlock, rewardPercentiles); err != nil {
+			return nil, err
+		}
+		return res, nil
+	}
+	return nil, RequiresProxyError{method: "eth_feeHistory"}
+}
+
+// EstimateGas returns an estimate of the amount of gas needed to execute the
+// given transaction against the current pending block.
+func (pea *PublicEthAPI) EstimateGas(ctx context.Context, args TransactionArgs, blockNrOrHash *rpc.BlockNumberOrHash) (hexutil.Uint64, error) {
+	if pea.rpc != nil {
+		var res hexutil.Uint64
+		if err := pea.rpc.CallContext(ctx, &res, "eth_estimateGas", args, blockNrOrHash); err != nil {
+			return hexutil.Uint64(0), err
+		}
+		return res, nil
+	}
+	return hexutil.Uint64(0), RequiresProxyError{method: "eth_estimateGas"}
+}
+
+// GasPrice returns a suggestion for a gas price for legacy transactions.
+func (pea *PublicEthAPI) GasPrice(ctx context.Context) (*hexutil.Big, error) {
+	if pea.rpc != nil {
+		var res *hexutil.Big
+		if err := pea.rpc.CallContext(ctx, &res, "eth_gasPrice"); err != nil {
+			return nil, err
+		}
+		return res, nil
+	}
+	return nil, RequiresProxyError{method: "eth_gasPrice"}
+}
+
+// MaxPriorityFeePerGas returns a suggestion for a gas tip cap for dynamic fee transactions.
+func (pea *PublicEthAPI) MaxPriorityFeePerGas(ctx context.Context) (*hexutil.Big, error) {
+	if pea.rpc != nil {
+		var res *hexutil.Big
+		if err := pea.rpc.CallContext(ctx, &res, "eth_maxPriorityFeePerGas"); err != nil {
+			return nil, err
+		}
+		return res, nil
+	}
+	return nil, RequiresProxyError{method: "eth_maxPriorityFeePerGas"}
+}
+
 /*
 
 Receipts and Logs

pkg/eth/errors.go

@@ -0,0 +1,17 @@
+package eth
+
+import "fmt"
+
+type RequiresProxyError struct {
+	method string
+}
+
+var _ error = RequiresProxyError{}
+
+func (e RequiresProxyError) SetMethod(method string) {
+	e.method = method
+}
+
+func (e RequiresProxyError) Error() string {
+	return fmt.Sprintf("%s requires a configured proxy geth node", e.method)
+}

pkg/eth/transaction_arguments.go

@@ -0,0 +1,49 @@
+package eth
+
+import (
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// TransactionArgs represents the arguments to construct a new transaction
+// or a message call.
+type TransactionArgs struct {
+	From                 *common.Address `json:"from"`
+	To                   *common.Address `json:"to"`
+	Gas                  *hexutil.Uint64 `json:"gas"`
+	GasPrice             *hexutil.Big    `json:"gasPrice"`
+	MaxFeePerGas         *hexutil.Big    `json:"maxFeePerGas"`
+	MaxPriorityFeePerGas *hexutil.Big    `json:"maxPriorityFeePerGas"`
+	Value                *hexutil.Big    `json:"value"`
+	Nonce                *hexutil.Uint64 `json:"nonce"`
+
+	// We accept "data" and "input" for backwards-compatibility reasons.
+	// "input" is the newer name and should be preferred by clients.
+	// Issue detail: https://github.com/ethereum/go-ethereum/issues/15628
+	Data  *hexutil.Bytes `json:"data"`
+	Input *hexutil.Bytes `json:"input"`
+
+	// Introduced by AccessListTxType transaction.
+	AccessList *types.AccessList `json:"accessList,omitempty"`
+	ChainID    *hexutil.Big      `json:"chainId,omitempty"`
+}
+
+// from retrieves the transaction sender address.
+func (args *TransactionArgs) from() common.Address {
+	if args.From == nil {
+		return common.Address{}
+	}
+	return *args.From
+}
+
+// data retrieves the transaction calldata. Input field is preferred.
+func (args *TransactionArgs) data() []byte {
+	if args.Input != nil {
+		return *args.Input
+	}
+	if args.Data != nil {
+		return *args.Data
+	}
+	return nil
+}