add pre-transaction/post-block-finalization hooks

core/state_processor.go

@@ -129,6 +129,10 @@ 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.OnPreTxExecutionDone != nil {
+		hooks.OnPreTxExecutionDone()
+	}
+
 	return &ProcessResult{
 		Receipts: receipts,
 		Requests: requests,

core/tracing/hooks.go

@@ -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 -
 	*/
@@ -209,6 +216,10 @@ type Hooks struct {
 	OnSystemCallStart   OnSystemCallStartHook
 	OnSystemCallStartV2 OnSystemCallStartHookV2
 	OnSystemCallEnd     OnSystemCallEndHook
+
+	OnPreTxExecutionDone OnPreTxExecutionDoneHook
+	OnBlockFinalization  OnBlockFinalizationHook
+
 	// State events
 	OnBalanceChange BalanceChangeHook
 	OnNonceChange   NonceChangeHook