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eth/tracers: make transaction trace response compatible with geth #648

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eth/tracers: make transaction trace response compatible with geth #648

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21 changes: 20 additions & 1 deletion eth/tracers/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -184,11 +184,30 @@ type StdTraceConfig struct {

// txTraceResult is the result of a single transaction trace.
type txTraceResult struct {
TransactionHash common.Hash `json:"transactionHash,omitempty"`
TransactionHash common.Hash `json:"transactionHash"`
Result interface{} `json:"result,omitempty"` // Trace results produced by the tracer
Error string `json:"error,omitempty"` // Trace failure produced by the tracer
}

// Create a response that is compatible with go-ethereum
// with txHash field but still keep transactionHash field
// to avoid breaking change for current user.
func (result txTraceResult) MarshalJSON() ([]byte, error) {
newResult := struct {
TxHash common.Hash `json:"txHash"`
TransactionHash common.Hash `json:"transactionHash"`
Result interface{} `json:"result,omitempty"`
Error string `json:"error,omitempty"`
}{
TxHash: result.TransactionHash,
TransactionHash: result.TransactionHash,
Result: result.Result,
Error: result.Error,
}

return json.Marshal(&newResult)
}

// internalAndAccountResult is the result of a single transaction trace.
type internalAndAccountResult struct {
InternalTxs []*txTraceResult `json:"internalTxs,omitempty"` // Trace results produced by the tracer
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