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executionapi.go
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executionapi.go
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package rpc
import (
"context"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/rpc"
)
type ExecutionClient struct {
name string
endpoint string
headers map[string]string
rpcClient *rpc.Client
ethClient *ethclient.Client
}
// NewExecutionClient is used to create a new execution client
func NewExecutionClient(name, url string, headers map[string]string) (*ExecutionClient, error) {
client := &ExecutionClient{
name: name,
endpoint: url,
headers: headers,
}
return client, nil
}
func (ec *ExecutionClient) Initialize(ctx context.Context) error {
if ec.ethClient != nil {
return nil
}
rpcClient, err := rpc.DialContext(ctx, ec.endpoint)
if err != nil {
return err
}
for hKey, hVal := range ec.headers {
rpcClient.SetHeader(hKey, hVal)
}
ec.rpcClient = rpcClient
ec.ethClient = ethclient.NewClient(rpcClient)
return nil
}
func (ec *ExecutionClient) GetEthClient() *ethclient.Client {
return ec.ethClient
}
func (ec *ExecutionClient) GetClientVersion(ctx context.Context) (string, error) {
var result string
err := ec.rpcClient.CallContext(ctx, &result, "web3_clientVersion")
return result, err
}
func (ec *ExecutionClient) GetChainSpec(ctx context.Context) (*ChainSpec, error) {
chainID, err := ec.ethClient.ChainID(ctx)
if err != nil {
return nil, err
}
return &ChainSpec{
ChainID: chainID.String(),
}, nil
}
func (ec *ExecutionClient) GetNodeSyncing(ctx context.Context) (*SyncStatus, error) {
status, err := ec.ethClient.SyncProgress(ctx)
if err != nil {
return nil, err
}
if status == nil && err == nil {
// Not syncing
ss := &SyncStatus{}
ss.IsSyncing = false
return ss, nil
}
return &SyncStatus{
IsSyncing: true,
CurrentBlock: status.CurrentBlock,
HighestBlock: status.HighestBlock,
StartingBlock: status.StartingBlock,
}, nil
}
func (ec *ExecutionClient) GetLatestBlock(ctx context.Context) (*types.Block, error) {
block, err := ec.ethClient.BlockByNumber(ctx, nil)
if err != nil {
return nil, err
}
return block, nil
}
func (ec *ExecutionClient) GetBlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
block, err := ec.ethClient.BlockByHash(ctx, hash)
if err != nil {
return nil, err
}
return block, nil
}
func (ec *ExecutionClient) GetNonceAt(ctx context.Context, wallet common.Address, blockNumber *big.Int) (uint64, error) {
return ec.ethClient.NonceAt(ctx, wallet, blockNumber)
}
func (ec *ExecutionClient) GetBalanceAt(ctx context.Context, wallet common.Address, blockNumber *big.Int) (*big.Int, error) {
return ec.ethClient.BalanceAt(ctx, wallet, blockNumber)
}
func (ec *ExecutionClient) GetTransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) {
return ec.ethClient.TransactionReceipt(ctx, txHash)
}
func (ec *ExecutionClient) SendTransaction(ctx context.Context, tx *types.Transaction) error {
return ec.ethClient.SendTransaction(ctx, tx)
}