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core: introduce new tracing hooks prior to transaction execution and after block reward application #32985

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core: introduce new tracing hooks prior to transaction execution and after block reward application #32985

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cba057f
add pre-transaction/post-block-finalization hooks
jwasinger Oct 21, 2025
5638826
fix last commit
jwasinger Oct 21, 2025
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7 changes: 7 additions & 0 deletions core/state_processor.go
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,9 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
if config.IsPrague(block.Number(), block.Time()) || config.IsVerkle(block.Number(), block.Time()) {
ProcessParentBlockHash(block.ParentHash(), evm)
}
if hooks := cfg.Tracer; hooks != nil && hooks.OnPreTxExecutionDone != nil {
hooks.OnPreTxExecutionDone()
}

// Iterate over and process the individual transactions
for i, tx := range block.Transactions() {
Expand Down Expand Up @@ -129,6 +132,10 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
// Finalize the block, applying any consensus engine specific extras (e.g. block rewards)
p.chain.Engine().Finalize(p.chain, header, tracingStateDB, block.Body())

if hooks := cfg.Tracer; hooks != nil && hooks.OnBlockFinalization != nil {
hooks.OnBlockFinalization()
}

return &ProcessResult{
Receipts: receipts,
Requests: requests,
Expand Down
11 changes: 11 additions & 0 deletions core/tracing/hooks.go
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Original file line number Diff line number Diff line change
Expand Up @@ -161,6 +161,13 @@ type (
// beacon block root.
OnSystemCallEndHook = func()

// OnPreTxExecutionDoneHook is called immediately prior to executing the first
// transaction in the block.
OnPreTxExecutionDoneHook func()

// OnBlockFinalizationHook is called immediately after block rewards are applied
OnBlockFinalizationHook func()

/*
- State events -
*/
Expand Down Expand Up @@ -209,6 +216,10 @@ type Hooks struct {
OnSystemCallStart OnSystemCallStartHook
OnSystemCallStartV2 OnSystemCallStartHookV2
OnSystemCallEnd OnSystemCallEndHook

OnPreTxExecutionDone OnPreTxExecutionDoneHook
OnBlockFinalization OnBlockFinalizationHook

// State events
OnBalanceChange BalanceChangeHook
OnNonceChange NonceChangeHook
Expand Down
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