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eth/tracers: add withdrawal tracing support #32465

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samuel 2025-08-30 01:14:18 +01:00
parent 3aeccadd04
commit 1b9a2382d2
1 changed files with 55 additions and 1 deletions
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56
eth/tracers/api.go
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@ -34,6 +34,7 @@ import (
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/tracing"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/eth/tracers/logger"
@ -44,6 +45,7 @@ import (
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
"github.com/holiman/uint256"
)
const (
@ -158,7 +160,8 @@ type TraceConfig struct {
Reexec *uint64
// Config specific to given tracer. Note struct logger
// config are historically embedded in main object.
TracerConfig json.RawMessage
TracerConfig json.RawMessage
IncludeWithdrawals *bool `json:"includeWithdrawals,omitempty"` // Enable tracing of beacon chain withdrawals
}
// TraceCallConfig is the config for traceCall API. It holds one more
@ -578,6 +581,49 @@ func (api *API) StandardTraceBadBlockToFile(ctx context.Context, hash common.Has
return api.standardTraceBlockToFile(ctx, block, config)
}
// shouldTraceWithdrawals returns true if withdrawal tracing is enabled in the config
func (api *API) shouldTraceWithdrawals(config *TraceConfig) bool {
return config != nil && config.IncludeWithdrawals != nil && *config.IncludeWithdrawals
}
// traceWithdrawals processes withdrawal balance changes and adds them to the trace results
func (api *API) traceWithdrawals(ctx context.Context, block *types.Block, statedb *state.StateDB, config *TraceConfig, results *[]*txTraceResult) error {
// Process each withdrawal with tracing
for _, withdrawal := range block.Withdrawals() {
// Capture pre-withdrawal balance
preBalance := statedb.GetBalance(withdrawal.Address).ToBig()
// Convert withdrawal amount from gwei to wei (same as beacon consensus)
amount := new(big.Int).SetUint64(withdrawal.Amount)
amount = amount.Mul(amount, big.NewInt(params.GWei))
// Process the withdrawal by adding balance
statedb.AddBalance(withdrawal.Address, uint256.MustFromBig(amount), tracing.BalanceIncreaseWithdrawal)
// Capture post-withdrawal balance
postBalance := statedb.GetBalance(withdrawal.Address).ToBig()
// Create a withdrawal trace result
withdrawalResult := &txTraceResult{
TxHash: common.Hash{}, // Withdrawals don't have transaction hashes
Result: map[string]interface{}{
"type": "withdrawal",
"index": withdrawal.Index,
"validatorIndex": withdrawal.Validator,
"address": withdrawal.Address,
"amount": (*hexutil.Big)(amount),
"preBalance": (*hexutil.Big)(preBalance),
"postBalance": (*hexutil.Big)(postBalance),
},
}
// Add to results
*results = append(*results, withdrawalResult)
}
return nil
}
// traceBlock configures a new tracer according to the provided configuration, and
// executes all the transactions contained within. The return value will be one item
// per transaction, dependent on the requested tracer.
@ -639,6 +685,14 @@ func (api *API) traceBlock(ctx context.Context, block *types.Block, config *Trac
}
results[i] = &txTraceResult{TxHash: tx.Hash(), Result: res}
}
// Process withdrawals if enabled and block contains withdrawals
if len(block.Withdrawals()) > 0 && api.shouldTraceWithdrawals(config) {
if err := api.traceWithdrawals(ctx, block, statedb, config, &results); err != nil {
return nil, err
}
}
return results, nil
}