status-go/rpc/chain/client.go

864 lines
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package chain
import (
"context"
"fmt"
"math/big"
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"strings"
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"sync"
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"time"
"github.com/afex/hystrix-go/hystrix"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/rpc"
"github.com/status-im/status-go/services/rpcstats"
)
type FeeHistory struct {
BaseFeePerGas []string `json:"baseFeePerGas"`
}
type ClientWithFallback struct {
ChainID uint64
main *ethclient.Client
fallback *ethclient.Client
mainRPC *rpc.Client
fallbackRPC *rpc.Client
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WalletNotifier func(chainId uint64, message string)
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IsConnected bool
IsConnectedLock sync.RWMutex
LastCheckedAt int64
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}
// Don't mark connection as failed if we get one of these errors
var propagateErrors = []error{
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vm.ErrOutOfGas,
vm.ErrCodeStoreOutOfGas,
vm.ErrDepth,
vm.ErrInsufficientBalance,
vm.ErrContractAddressCollision,
vm.ErrExecutionReverted,
vm.ErrMaxCodeSizeExceeded,
vm.ErrInvalidJump,
vm.ErrWriteProtection,
vm.ErrReturnDataOutOfBounds,
vm.ErrGasUintOverflow,
vm.ErrInvalidCode,
vm.ErrNonceUintOverflow,
// Used by balance history to check state
ethereum.NotFound,
bind.ErrNoCode,
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}
type CommandResult struct {
res1 any
res2 any
vmError error
}
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func NewSimpleClient(main *rpc.Client, chainID uint64) *ClientWithFallback {
hystrix.ConfigureCommand(fmt.Sprintf("ethClient_%d", chainID), hystrix.CommandConfig{
Timeout: 10000,
MaxConcurrentRequests: 100,
SleepWindow: 300000,
ErrorPercentThreshold: 25,
})
return &ClientWithFallback{
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ChainID: chainID,
main: ethclient.NewClient(main),
fallback: nil,
mainRPC: main,
fallbackRPC: nil,
IsConnected: true,
LastCheckedAt: time.Now().Unix(),
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}
}
func NewClient(main, fallback *rpc.Client, chainID uint64) *ClientWithFallback {
hystrix.ConfigureCommand(fmt.Sprintf("ethClient_%d", chainID), hystrix.CommandConfig{
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Timeout: 20000,
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MaxConcurrentRequests: 100,
SleepWindow: 300000,
ErrorPercentThreshold: 25,
})
var fallbackEthClient *ethclient.Client
if fallback != nil {
fallbackEthClient = ethclient.NewClient(fallback)
}
return &ClientWithFallback{
ChainID: chainID,
main: ethclient.NewClient(main),
fallback: fallbackEthClient,
mainRPC: main,
fallbackRPC: fallback,
IsConnected: true,
LastCheckedAt: time.Now().Unix(),
}
}
func (c *ClientWithFallback) Close() {
c.main.Close()
if c.fallback != nil {
c.fallback.Close()
}
}
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func isVMError(err error) bool {
if strings.HasPrefix(err.Error(), "execution reverted") {
return true
}
for _, vmError := range propagateErrors {
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if err == vmError {
return true
}
}
return false
}
func (c *ClientWithFallback) SetIsConnected(value bool) {
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c.IsConnectedLock.Lock()
defer c.IsConnectedLock.Unlock()
c.LastCheckedAt = time.Now().Unix()
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if !value {
if c.IsConnected {
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if c.WalletNotifier != nil {
c.WalletNotifier(c.ChainID, "down")
}
c.IsConnected = false
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}
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} else {
if !c.IsConnected {
c.IsConnected = true
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if c.WalletNotifier != nil {
c.WalletNotifier(c.ChainID, "up")
}
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}
}
}
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func (c *ClientWithFallback) makeCallNoReturn(main func() error, fallback func() error) error {
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resultChan := make(chan CommandResult, 1)
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c.LastCheckedAt = time.Now().Unix()
errChan := hystrix.Go(fmt.Sprintf("ethClient_%d", c.ChainID), func() error {
err := main()
if err != nil {
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if isVMError(err) {
resultChan <- CommandResult{vmError: err}
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return nil
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}
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return err
}
c.SetIsConnected(true)
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resultChan <- CommandResult{}
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return nil
}, func(err error) error {
if c.fallback == nil {
c.SetIsConnected(false)
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return err
}
err = fallback()
if err != nil {
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if isVMError(err) {
resultChan <- CommandResult{vmError: err}
return nil
}
c.SetIsConnected(false)
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return err
}
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resultChan <- CommandResult{}
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return nil
})
select {
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case result := <-resultChan:
if result.vmError != nil {
return result.vmError
}
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return nil
case err := <-errChan:
return err
}
}
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func (c *ClientWithFallback) makeCallSingleReturn(main func() (any, error), fallback func() (any, error), toggleIsConnected bool) (any, error) {
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resultChan := make(chan CommandResult, 1)
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errChan := hystrix.Go(fmt.Sprintf("ethClient_%d", c.ChainID), func() error {
res, err := main()
if err != nil {
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if isVMError(err) {
resultChan <- CommandResult{vmError: err}
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return nil
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}
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return err
}
if toggleIsConnected {
c.SetIsConnected(true)
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}
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resultChan <- CommandResult{res1: res}
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return nil
}, func(err error) error {
if c.fallback == nil {
if toggleIsConnected {
c.SetIsConnected(false)
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}
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return err
}
res, err := fallback()
if err != nil {
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if isVMError(err) {
resultChan <- CommandResult{vmError: err}
return nil
}
if toggleIsConnected {
c.SetIsConnected(false)
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}
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return err
}
if toggleIsConnected {
c.SetIsConnected(true)
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}
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resultChan <- CommandResult{res1: res}
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return nil
})
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select {
case result := <-resultChan:
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if result.vmError != nil {
return nil, result.vmError
}
return result.res1, nil
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case err := <-errChan:
return nil, err
}
}
func (c *ClientWithFallback) makeCallDoubleReturn(main func() (any, any, error), fallback func() (any, any, error)) (any, any, error) {
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resultChan := make(chan CommandResult, 1)
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c.LastCheckedAt = time.Now().Unix()
errChan := hystrix.Go(fmt.Sprintf("ethClient_%d", c.ChainID), func() error {
a, b, err := main()
if err != nil {
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if isVMError(err) {
resultChan <- CommandResult{vmError: err}
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return nil
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}
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return err
}
c.SetIsConnected(true)
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resultChan <- CommandResult{res1: a, res2: b}
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return nil
}, func(err error) error {
if c.fallback == nil {
c.SetIsConnected(false)
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return err
}
a, b, err := fallback()
if err != nil {
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if isVMError(err) {
resultChan <- CommandResult{vmError: err}
return nil
}
c.SetIsConnected(false)
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return err
}
c.SetIsConnected(true)
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resultChan <- CommandResult{res1: a, res2: b}
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return nil
})
select {
case result := <-resultChan:
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if result.vmError != nil {
return nil, nil, result.vmError
}
return result.res1, result.res2, nil
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case err := <-errChan:
return nil, nil, err
}
}
func (c *ClientWithFallback) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
rpcstats.CountCall("eth_BlockByHash")
block, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.BlockByHash(ctx, hash) },
func() (any, error) { return c.fallback.BlockByHash(ctx, hash) },
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true,
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)
if err != nil {
return nil, err
}
return block.(*types.Block), nil
}
func (c *ClientWithFallback) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) {
rpcstats.CountCall("eth_BlockByNumber")
block, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.BlockByNumber(ctx, number) },
func() (any, error) { return c.fallback.BlockByNumber(ctx, number) },
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true,
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)
if err != nil {
return nil, err
}
return block.(*types.Block), nil
}
func (c *ClientWithFallback) BlockNumber(ctx context.Context) (uint64, error) {
rpcstats.CountCall("eth_BlockNumber")
number, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.BlockNumber(ctx) },
func() (any, error) { return c.fallback.BlockNumber(ctx) },
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true,
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)
if err != nil {
return 0, err
}
return number.(uint64), nil
}
func (c *ClientWithFallback) PeerCount(ctx context.Context) (uint64, error) {
rpcstats.CountCall("eth_PeerCount")
peerCount, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PeerCount(ctx) },
func() (any, error) { return c.fallback.PeerCount(ctx) },
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true,
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)
if err != nil {
return 0, err
}
return peerCount.(uint64), nil
}
func (c *ClientWithFallback) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
rpcstats.CountCall("eth_HeaderByHash")
header, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.HeaderByHash(ctx, hash) },
func() (any, error) { return c.fallback.HeaderByHash(ctx, hash) },
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false,
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)
if err != nil {
return nil, err
}
return header.(*types.Header), nil
}
func (c *ClientWithFallback) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
rpcstats.CountCall("eth_HeaderByNumber")
header, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.HeaderByNumber(ctx, number) },
func() (any, error) { return c.fallback.HeaderByNumber(ctx, number) },
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false,
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)
if err != nil {
return nil, err
}
return header.(*types.Header), nil
}
func (c *ClientWithFallback) TransactionByHash(ctx context.Context, hash common.Hash) (*types.Transaction, bool, error) {
rpcstats.CountCall("eth_TransactionByHash")
tx, isPending, err := c.makeCallDoubleReturn(
func() (any, any, error) { return c.main.TransactionByHash(ctx, hash) },
func() (any, any, error) { return c.fallback.TransactionByHash(ctx, hash) },
)
if err != nil {
return nil, false, err
}
return tx.(*types.Transaction), isPending.(bool), nil
}
func (c *ClientWithFallback) TransactionSender(ctx context.Context, tx *types.Transaction, block common.Hash, index uint) (common.Address, error) {
rpcstats.CountCall("eth_TransactionSender")
address, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.TransactionSender(ctx, tx, block, index) },
func() (any, error) { return c.fallback.TransactionSender(ctx, tx, block, index) },
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true,
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)
return address.(common.Address), err
}
func (c *ClientWithFallback) TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) {
rpcstats.CountCall("eth_TransactionCount")
count, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.TransactionCount(ctx, blockHash) },
func() (any, error) { return c.fallback.TransactionCount(ctx, blockHash) },
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true,
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)
if err != nil {
return 0, err
}
return count.(uint), nil
}
func (c *ClientWithFallback) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) {
rpcstats.CountCall("eth_TransactionInBlock")
transactions, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.TransactionInBlock(ctx, blockHash, index) },
func() (any, error) { return c.fallback.TransactionInBlock(ctx, blockHash, index) },
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true,
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)
if err != nil {
return nil, err
}
return transactions.(*types.Transaction), nil
}
func (c *ClientWithFallback) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) {
rpcstats.CountCall("eth_TransactionReceipt")
receipt, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.TransactionReceipt(ctx, txHash) },
func() (any, error) { return c.fallback.TransactionReceipt(ctx, txHash) },
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true,
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)
if err != nil {
return nil, err
}
return receipt.(*types.Receipt), nil
}
func (c *ClientWithFallback) SyncProgress(ctx context.Context) (*ethereum.SyncProgress, error) {
rpcstats.CountCall("eth_SyncProgress")
progress, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.SyncProgress(ctx) },
func() (any, error) { return c.fallback.SyncProgress(ctx) },
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true,
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)
if err != nil {
return nil, err
}
return progress.(*ethereum.SyncProgress), nil
}
func (c *ClientWithFallback) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (ethereum.Subscription, error) {
rpcstats.CountCall("eth_SubscribeNewHead")
sub, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.SubscribeNewHead(ctx, ch) },
func() (any, error) { return c.fallback.SubscribeNewHead(ctx, ch) },
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true,
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)
if err != nil {
return nil, err
}
return sub.(ethereum.Subscription), nil
}
func (c *ClientWithFallback) NetworkID(ctx context.Context) (*big.Int, error) {
rpcstats.CountCall("eth_NetworkID")
networkID, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.NetworkID(ctx) },
func() (any, error) { return c.fallback.NetworkID(ctx) },
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true,
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)
if err != nil {
return nil, err
}
return networkID.(*big.Int), nil
}
func (c *ClientWithFallback) BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error) {
rpcstats.CountCall("eth_BalanceAt")
balance, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.BalanceAt(ctx, account, blockNumber) },
func() (any, error) { return c.fallback.BalanceAt(ctx, account, blockNumber) },
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true,
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)
if err != nil {
return nil, err
}
return balance.(*big.Int), nil
}
func (c *ClientWithFallback) StorageAt(ctx context.Context, account common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error) {
rpcstats.CountCall("eth_StorageAt")
storage, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.StorageAt(ctx, account, key, blockNumber) },
func() (any, error) { return c.fallback.StorageAt(ctx, account, key, blockNumber) },
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true,
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)
if err != nil {
return nil, err
}
return storage.([]byte), nil
}
func (c *ClientWithFallback) CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error) {
rpcstats.CountCall("eth_CodeAt")
code, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.CodeAt(ctx, account, blockNumber) },
func() (any, error) { return c.fallback.CodeAt(ctx, account, blockNumber) },
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true,
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)
if err != nil {
return nil, err
}
return code.([]byte), nil
}
func (c *ClientWithFallback) NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error) {
rpcstats.CountCall("eth_NonceAt")
nonce, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.NonceAt(ctx, account, blockNumber) },
func() (any, error) { return c.fallback.NonceAt(ctx, account, blockNumber) },
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true,
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)
if err != nil {
return 0, err
}
return nonce.(uint64), nil
}
func (c *ClientWithFallback) FilterLogs(ctx context.Context, q ethereum.FilterQuery) ([]types.Log, error) {
rpcstats.CountCall("eth_FilterLogs")
logs, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.FilterLogs(ctx, q) },
func() (any, error) { return c.fallback.FilterLogs(ctx, q) },
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true,
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)
if err != nil {
return nil, err
}
return logs.([]types.Log), nil
}
func (c *ClientWithFallback) SubscribeFilterLogs(ctx context.Context, q ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error) {
rpcstats.CountCall("eth_SubscribeFilterLogs")
sub, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.SubscribeFilterLogs(ctx, q, ch) },
func() (any, error) { return c.fallback.SubscribeFilterLogs(ctx, q, ch) },
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true,
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)
if err != nil {
return nil, err
}
return sub.(ethereum.Subscription), nil
}
func (c *ClientWithFallback) PendingBalanceAt(ctx context.Context, account common.Address) (*big.Int, error) {
rpcstats.CountCall("eth_PendingBalanceAt")
balance, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PendingBalanceAt(ctx, account) },
func() (any, error) { return c.fallback.PendingBalanceAt(ctx, account) },
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true,
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)
if err != nil {
return nil, err
}
return balance.(*big.Int), nil
}
func (c *ClientWithFallback) PendingStorageAt(ctx context.Context, account common.Address, key common.Hash) ([]byte, error) {
rpcstats.CountCall("eth_PendingStorageAt")
storage, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PendingStorageAt(ctx, account, key) },
func() (any, error) { return c.fallback.PendingStorageAt(ctx, account, key) },
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true,
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)
if err != nil {
return nil, err
}
return storage.([]byte), nil
}
func (c *ClientWithFallback) PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error) {
rpcstats.CountCall("eth_PendingCodeAt")
code, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PendingCodeAt(ctx, account) },
func() (any, error) { return c.fallback.PendingCodeAt(ctx, account) },
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true,
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)
if err != nil {
return nil, err
}
return code.([]byte), nil
}
func (c *ClientWithFallback) PendingNonceAt(ctx context.Context, account common.Address) (uint64, error) {
rpcstats.CountCall("eth_PendingNonceAt")
nonce, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PendingNonceAt(ctx, account) },
func() (any, error) { return c.fallback.PendingNonceAt(ctx, account) },
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true,
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)
if err != nil {
return 0, err
}
return nonce.(uint64), nil
}
func (c *ClientWithFallback) PendingTransactionCount(ctx context.Context) (uint, error) {
rpcstats.CountCall("eth_PendingTransactionCount")
count, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PendingTransactionCount(ctx) },
func() (any, error) { return c.fallback.PendingTransactionCount(ctx) },
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true,
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)
if err != nil {
return 0, err
}
return count.(uint), nil
}
func (c *ClientWithFallback) CallContract(ctx context.Context, msg ethereum.CallMsg, blockNumber *big.Int) ([]byte, error) {
rpcstats.CountCall("eth_CallContract")
data, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.CallContract(ctx, msg, blockNumber) },
func() (any, error) { return c.fallback.CallContract(ctx, msg, blockNumber) },
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true,
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)
if err != nil {
return nil, err
}
return data.([]byte), nil
}
func (c *ClientWithFallback) CallContractAtHash(ctx context.Context, msg ethereum.CallMsg, blockHash common.Hash) ([]byte, error) {
rpcstats.CountCall("eth_CallContractAtHash")
data, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.CallContractAtHash(ctx, msg, blockHash) },
func() (any, error) { return c.fallback.CallContractAtHash(ctx, msg, blockHash) },
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true,
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)
if err != nil {
return nil, err
}
return data.([]byte), nil
}
func (c *ClientWithFallback) PendingCallContract(ctx context.Context, msg ethereum.CallMsg) ([]byte, error) {
rpcstats.CountCall("eth_PendingCallContract")
data, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.PendingCallContract(ctx, msg) },
func() (any, error) { return c.fallback.PendingCallContract(ctx, msg) },
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true,
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)
if err != nil {
return nil, err
}
return data.([]byte), nil
}
func (c *ClientWithFallback) SuggestGasPrice(ctx context.Context) (*big.Int, error) {
rpcstats.CountCall("eth_SuggestGasPrice")
gasPrice, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.SuggestGasPrice(ctx) },
func() (any, error) { return c.fallback.SuggestGasPrice(ctx) },
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true,
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)
if err != nil {
return nil, err
}
return gasPrice.(*big.Int), nil
}
func (c *ClientWithFallback) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
rpcstats.CountCall("eth_SuggestGasTipCap")
tip, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.SuggestGasTipCap(ctx) },
func() (any, error) { return c.fallback.SuggestGasTipCap(ctx) },
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true,
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)
if err != nil {
return nil, err
}
return tip.(*big.Int), nil
}
func (c *ClientWithFallback) FeeHistory(ctx context.Context, blockCount uint64, lastBlock *big.Int, rewardPercentiles []float64) (*ethereum.FeeHistory, error) {
rpcstats.CountCall("eth_FeeHistory")
feeHistory, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles) },
func() (any, error) { return c.fallback.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles) },
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true,
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)
if err != nil {
return nil, err
}
return feeHistory.(*ethereum.FeeHistory), nil
}
func (c *ClientWithFallback) EstimateGas(ctx context.Context, msg ethereum.CallMsg) (uint64, error) {
rpcstats.CountCall("eth_EstimateGas")
estimate, err := c.makeCallSingleReturn(
func() (any, error) { return c.main.EstimateGas(ctx, msg) },
func() (any, error) { return c.fallback.EstimateGas(ctx, msg) },
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true,
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)
if err != nil {
return 0, err
}
return estimate.(uint64), nil
}
func (c *ClientWithFallback) SendTransaction(ctx context.Context, tx *types.Transaction) error {
rpcstats.CountCall("eth_SendTransaction")
return c.makeCallNoReturn(
func() error { return c.main.SendTransaction(ctx, tx) },
func() error { return c.fallback.SendTransaction(ctx, tx) },
)
}
func (c *ClientWithFallback) CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error {
rpcstats.CountCall("eth_CallContext")
return c.makeCallNoReturn(
func() error { return c.mainRPC.CallContext(ctx, result, method, args...) },
func() error { return c.fallbackRPC.CallContext(ctx, result, method, args...) },
)
}
func (c *ClientWithFallback) ToBigInt() *big.Int {
return big.NewInt(int64(c.ChainID))
}
func (c *ClientWithFallback) GetBaseFeeFromBlock(blockNumber *big.Int) (string, error) {
rpcstats.CountCall("eth_GetBaseFeeFromBlock")
var feeHistory FeeHistory
err := c.mainRPC.Call(&feeHistory, "eth_feeHistory", "0x1", (*hexutil.Big)(blockNumber), nil)
if err != nil {
if err.Error() == "the method eth_feeHistory does not exist/is not available" {
return "", nil
}
return "", err
}
var baseGasFee string = ""
if len(feeHistory.BaseFeePerGas) > 0 {
baseGasFee = feeHistory.BaseFeePerGas[0]
}
return baseGasFee, err
}
// go-ethereum's `Transaction` items drop the blkHash obtained during the RPC call.
// This function preserves the additional data. This is the cheapest way to obtain
// the block hash for a given block number.
func (c *ClientWithFallback) FullTransactionByBlockNumberAndIndex(ctx context.Context, blockNumber *big.Int, index uint) (*FullTransaction, error) {
rpcstats.CountCall("eth_FullTransactionByBlockNumberAndIndex")
tx, err := c.makeCallSingleReturn(
func() (any, error) {
return callFullTransactionByBlockNumberAndIndex(ctx, c.mainRPC, blockNumber, index)
},
func() (any, error) {
return callFullTransactionByBlockNumberAndIndex(ctx, c.fallbackRPC, blockNumber, index)
},
true,
)
if err != nil {
return nil, err
}
return tx.(*FullTransaction), nil
}