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Add option to forward eth_getStorageAt calls. (#221)

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Thomas E Lackey 2023-01-10 17:39:21 -06:00 committed by GitHub
parent 8c55b6341a
commit 757edf17d6
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 54 additions and 31 deletions
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1
cmd/serve.go
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@ -395,6 +395,7 @@ func init() {
viper.BindPFlag("ethereum.chainConfig", serveCmd.PersistentFlags().Lookup("eth-chain-config"))
viper.BindPFlag("ethereum.supportsStateDiff", serveCmd.PersistentFlags().Lookup("eth-supports-state-diff"))
viper.BindPFlag("ethereum.forwardEthCalls", serveCmd.PersistentFlags().Lookup("eth-forward-eth-calls"))
viper.BindPFlag("ethereum.forwardGetStorageAt", serveCmd.PersistentFlags().Lookup("eth-forward-get-storage-at"))
viper.BindPFlag("ethereum.proxyOnError", serveCmd.PersistentFlags().Lookup("eth-proxy-on-error"))
// groupcache flags

40
pkg/eth/api.go
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@ -62,21 +62,25 @@ type PublicEthAPI struct {
B *Backend
// Proxy node for forwarding cache misses
supportsStateDiff bool // Whether the remote node supports the statediff_writeStateDiffAt endpoint, if it does we can fill the local cache when we hit a miss
rpc *rpc.Client
ethClient *ethclient.Client
forwardEthCalls bool // if true, forward eth_call calls directly to the configured proxy node
proxyOnError bool // turn on regular proxy fall-through on errors; needed to test difference between direct and indirect fall-through
supportsStateDiff bool // Whether the remote node supports the statediff_writeStateDiffAt endpoint, if it does we can fill the local cache when we hit a miss
rpc *rpc.Client
ethClient *ethclient.Client
forwardEthCalls bool // if true, forward eth_call calls directly to the configured proxy node
forwardGetStorageAt bool // if true, forward eth_getStorageAt calls directly to the configured proxy node
proxyOnError bool // turn on regular proxy fall-through on errors; needed to test difference between direct and indirect fall-through
}
// NewPublicEthAPI creates a new PublicEthAPI with the provided underlying Backend
func NewPublicEthAPI(b *Backend, client *rpc.Client, supportsStateDiff, forwardEthCalls, proxyOnError bool) (*PublicEthAPI, error) {
func NewPublicEthAPI(b *Backend, client *rpc.Client, supportsStateDiff, forwardEthCalls, forwardGetStorageAt, proxyOnError bool) (*PublicEthAPI, error) {
if b == nil {
return nil, errors.New("ipld-eth-server must be configured with an ethereum backend")
}
if forwardEthCalls && client == nil {
return nil, errors.New("ipld-eth-server is configured to forward eth_calls to proxy node but no proxy node is configured")
}
if forwardGetStorageAt && client == nil {
return nil, errors.New("ipld-eth-server is configured to forward eth_getStorageAt to proxy node but no proxy node is configured")
}
if proxyOnError && client == nil {
return nil, errors.New("ipld-eth-server is configured to forward all calls to proxy node on errors but no proxy node is configured")
}
@ -85,12 +89,13 @@ func NewPublicEthAPI(b *Backend, client *rpc.Client, supportsStateDiff, forwardE
ethClient = ethclient.NewClient(client)
}
return &PublicEthAPI{
B: b,
supportsStateDiff: supportsStateDiff,
rpc: client,
ethClient: ethClient,
forwardEthCalls: forwardEthCalls,
proxyOnError: proxyOnError,
B: b,
supportsStateDiff: supportsStateDiff,
rpc: client,
ethClient: ethClient,
forwardEthCalls: forwardEthCalls,
forwardGetStorageAt: forwardGetStorageAt,
proxyOnError: proxyOnError,
}, nil
}
@ -725,6 +730,13 @@ func (pea *PublicEthAPI) localGetBalance(ctx context.Context, address common.Add
// block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block
// numbers are also allowed.
func (pea *PublicEthAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) {
if pea.forwardGetStorageAt {
var res hexutil.Bytes
// If forwarding all getStorageAt calls, don't request statediffing.
err := pea.rpc.CallContext(ctx, &res, "eth_getStorageAt", address, key, blockNrOrHash)
return res, err
}
storageVal, err := pea.B.GetStorageByNumberOrHash(ctx, address, common.HexToHash(key), blockNrOrHash)
if storageVal != nil && err == nil {
var value common.Hash
@ -740,8 +752,10 @@ func (pea *PublicEthAPI) GetStorageAt(ctx context.Context, address common.Addres
return value[:], nil
}
if pea.proxyOnError {
logrus.Warnf("Missing eth_getStorageAt(%s, %s, %s)", address.Hash().String(), key, blockNrOrHash.String())
var res hexutil.Bytes
if err := pea.rpc.CallContext(ctx, &res, "eth_getStorageAt", address, key, blockNrOrHash); res != nil && err == nil {
// If only proxying on error, request statediffing for the missing data.
go pea.writeStateDiffAtOrFor(blockNrOrHash)
return res, nil
}
@ -1080,6 +1094,7 @@ func (pea *PublicEthAPI) writeStateDiffAt(height int64) {
IncludeTD: true,
IncludeCode: true,
}
logrus.Debugf("Calling statediff_writeStateDiffAt(%d)", height)
if err := pea.rpc.CallContext(ctx, &data, "statediff_writeStateDiffAt", uint64(height), params); err != nil {
logrus.Errorf("writeStateDiffAt %d faild with err %s", height, err.Error())
}
@ -1102,6 +1117,7 @@ func (pea *PublicEthAPI) writeStateDiffFor(blockHash common.Hash) {
IncludeTD: true,
IncludeCode: true,
}
logrus.Debugf("Calling statediff_writeStateDiffFor(%s)", blockHash.Hex())
if err := pea.rpc.CallContext(ctx, &data, "statediff_writeStateDiffFor", blockHash, params); err != nil {
logrus.Errorf("writeStateDiffFor %s faild with err %s", blockHash.Hex(), err.Error())
}

2
pkg/eth/api_test.go
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@ -211,7 +211,7 @@ var _ = Describe("API", func() {
},
})
Expect(err).ToNot(HaveOccurred())
api, _ = eth.NewPublicEthAPI(backend, nil, false, false, false)
api, _ = eth.NewPublicEthAPI(backend, nil, false, false, false, false)
tx, err = indexAndPublisher.PushBlock(test_helpers.MockBlock, test_helpers.MockReceipts, test_helpers.MockBlock.Difficulty())
Expect(err).ToNot(HaveOccurred())

2
pkg/eth/eth_state_test.go
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@ -125,7 +125,7 @@ var _ = Describe("eth state reading tests", func() {
},
})
Expect(err).ToNot(HaveOccurred())
api, _ = eth.NewPublicEthAPI(backend, nil, false, false, false)
api, _ = eth.NewPublicEthAPI(backend, nil, false, false, false, false)
// make the test blockchain (and state)
blocks, receipts, chain = test_helpers.MakeChain(chainLength, test_helpers.Genesis, test_helpers.TestChainGen)

34
pkg/serve/config.go
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@ -46,12 +46,13 @@ const (
SERVER_MAX_OPEN_CONNECTIONS = "SERVER_MAX_OPEN_CONNECTIONS"
SERVER_MAX_CONN_LIFETIME = "SERVER_MAX_CONN_LIFETIME"
ETH_DEFAULT_SENDER_ADDR = "ETH_DEFAULT_SENDER_ADDR"
ETH_RPC_GAS_CAP = "ETH_RPC_GAS_CAP"
ETH_CHAIN_CONFIG = "ETH_CHAIN_CONFIG"
ETH_SUPPORTS_STATEDIFF = "ETH_SUPPORTS_STATEDIFF"
ETH_FORWARD_ETH_CALLS = "ETH_FORWARD_ETH_CALLS"
ETH_PROXY_ON_ERROR = "ETH_PROXY_ON_ERROR"
ETH_DEFAULT_SENDER_ADDR = "ETH_DEFAULT_SENDER_ADDR"
ETH_RPC_GAS_CAP = "ETH_RPC_GAS_CAP"
ETH_CHAIN_CONFIG = "ETH_CHAIN_CONFIG"
ETH_SUPPORTS_STATEDIFF = "ETH_SUPPORTS_STATEDIFF"
ETH_FORWARD_ETH_CALLS = "ETH_FORWARD_ETH_CALLS"
ETH_FORWARD_GET_STORAGE_AT = "ETH_FORWARD_GET_STORAGE_AT"
ETH_PROXY_ON_ERROR = "ETH_PROXY_ON_ERROR"
VALIDATOR_ENABLED = "VALIDATOR_ENABLED"
VALIDATOR_EVERY_NTH_BLOCK = "VALIDATOR_EVERY_NTH_BLOCK"
@ -80,15 +81,16 @@ type Config struct {
TracingHttpEndpoint string
TracingPostgraphileEndpoint string
ChainConfig *params.ChainConfig
DefaultSender *common.Address
RPCGasCap *big.Int
EthHttpEndpoint string
Client *rpc.Client
SupportStateDiff bool
ForwardEthCalls bool
ProxyOnError bool
NodeNetworkID string
ChainConfig *params.ChainConfig
DefaultSender *common.Address
RPCGasCap *big.Int
EthHttpEndpoint string
Client *rpc.Client
SupportStateDiff bool
ForwardEthCalls bool
ForwardGetStorageAt bool
ProxyOnError bool
NodeNetworkID string
// Cache configuration.
GroupCache *ethServerShared.GroupCacheConfig
@ -108,6 +110,7 @@ func NewConfig() (*Config, error) {
viper.BindEnv("ethereum.chainConfig", ETH_CHAIN_CONFIG)
viper.BindEnv("ethereum.supportsStateDiff", ETH_SUPPORTS_STATEDIFF)
viper.BindEnv("ethereum.forwardEthCalls", ETH_FORWARD_ETH_CALLS)
viper.BindEnv("ethereum.forwardGetStorageAt", ETH_FORWARD_GET_STORAGE_AT)
viper.BindEnv("ethereum.proxyOnError", ETH_PROXY_ON_ERROR)
c.dbInit()
@ -121,6 +124,7 @@ func NewConfig() (*Config, error) {
c.Client = cli
c.SupportStateDiff = viper.GetBool("ethereum.supportsStateDiff")
c.ForwardEthCalls = viper.GetBool("ethereum.forwardEthCalls")
c.ForwardGetStorageAt = viper.GetBool("ethereum.forwardGetStorageAt")
c.ProxyOnError = viper.GetBool("ethereum.proxyOnError")
c.EthHttpEndpoint = ethHTTPEndpoint

6
pkg/serve/service.go
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@ -87,6 +87,8 @@ type Service struct {
backend *eth.Backend
// whether to forward eth_calls directly to proxy node
forwardEthCalls bool
// whether to forward eth_getStorageAt directly to proxy node
forwardGetStorageAt bool
// whether to forward all calls to proxy node if they throw an error locally
proxyOnError bool
// eth node network id
@ -106,6 +108,7 @@ func NewServer(settings *Config) (Server, error) {
sap.client = settings.Client
sap.supportsStateDiffing = settings.SupportStateDiff
sap.forwardEthCalls = settings.ForwardEthCalls
sap.forwardGetStorageAt = settings.ForwardGetStorageAt
sap.proxyOnError = settings.ProxyOnError
sap.nodeNetworkId = settings.NodeNetworkID
var err error
@ -141,8 +144,7 @@ func (sap *Service) APIs() []rpc.API {
Public: true,
},
}
ethAPI, err := eth.NewPublicEthAPI(sap.backend, sap.client, sap.supportsStateDiffing, sap.forwardEthCalls, sap.proxyOnError)
ethAPI, err := eth.NewPublicEthAPI(sap.backend, sap.client, sap.supportsStateDiffing, sap.forwardEthCalls, sap.forwardGetStorageAt, sap.proxyOnError)
if err != nil {
log.Fatalf("unable to create public eth api: %v", err)
}