cerc-io/ipld-eth-server
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add ability to fall through to another RPC provider

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This commit is contained in:
i-norden 2023-11-01 15:12:31 -05:00
parent bae020d7ef
commit b092154e33
1 changed files with 34 additions and 13 deletions
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35
pkg/eth/tracing.go
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@ -19,7 +19,6 @@ import (
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/eth/tracers"
"github.com/ethereum/go-ethereum/eth/tracers/logger"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
)
@ -34,7 +33,6 @@ const (
type TracingAPI struct {
backend *Backend
rpc *rpc.Client
ethClient *ethclient.Client
config APIConfig
}
@ -52,14 +50,9 @@ func NewTracingAPI(b *Backend, client *rpc.Client, config APIConfig) (*TracingAP
if config.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")
}
var ethClient *ethclient.Client
if client != nil {
ethClient = ethclient.NewClient(client)
}
return &TracingAPI{
backend: b,
rpc: client,
ethClient: ethClient,
config: config,
}, nil
}
@ -87,6 +80,20 @@ type TraceCallConfig struct {
// created during the execution of EVM if the given transaction was added on
// top of the provided block and returns them as a JSON object.
func (api *TracingAPI) TraceCall(ctx context.Context, args TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, config *TraceCallConfig) (interface{}, error) {
trace, err := api.localTraceCall(ctx, args, blockNrOrHash, config)
if trace != nil && err == nil {
return trace, nil
}
if api.config.ProxyOnError {
var res interface{}
if err := api.rpc.CallContext(ctx, &res, "debug_traceCall", args, blockNrOrHash, config); res != nil && err == nil {
return res, nil
}
}
return nil, err
}
func (api *TracingAPI) localTraceCall(ctx context.Context, args TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, config *TraceCallConfig) (interface{}, error) {
// Try to retrieve the specified block
var (
err error
@ -232,6 +239,20 @@ type txTraceResult struct {
// TraceBlock returns the structured logs created during the execution of EVM
// and returns them as a JSON object.
func (api *TracingAPI) TraceBlock(ctx context.Context, blob hexutil.Bytes, config *TraceConfig) ([]*txTraceResult, error) {
trace, err := api.localTraceBlock(ctx, blob, config)
if trace != nil && err == nil {
return trace, nil
}
if api.config.ProxyOnError {
var res []*txTraceResult
if err := api.rpc.CallContext(ctx, &res, "debug_traceBlock", blob, config); res != nil && err == nil {
return res, nil
}
}
return nil, err
}
func (api *TracingAPI) localTraceBlock(ctx context.Context, blob hexutil.Bytes, config *TraceConfig) ([]*txTraceResult, error) {
block := new(types.Block)
if err := rlp.Decode(bytes.NewReader(blob), block); err != nil {
return nil, fmt.Errorf("could not decode block: %v", err)