Add state update hooks

core/state/plugin_hooks.go

@@ -0,0 +1,27 @@
+package state
+
+import (
+  "github.com/ethereum/go-ethereum/common"
+  "github.com/ethereum/go-ethereum/plugins"
+  "github.com/ethereum/go-ethereum/log"
+)
+
+func PluginStateUpdate(pl *plugins.PluginLoader, blockRoot, parentRoot common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) {
+  fnList := pl.Lookup("StateUpdate", func(item interface{}) bool  {
+    _, ok := item.(func(common.Hash, common.Hash, map[common.Hash]struct{}, map[common.Hash][]byte, map[common.Hash]map[common.Hash][]byte))
+      return ok
+  })
+  for _, fni := range fnList {
+    if fn, ok := fni.(func(common.Hash, common.Hash, map[common.Hash]struct{}, map[common.Hash][]byte, map[common.Hash]map[common.Hash][]byte)); ok {
+      fn(blockRoot, parentRoot, destructs, accounts, storage)
+    }
+  }
+}
+
+func pluginStateUpdate(blockRoot, parentRoot common.Hash, destructs map[common.Hash]struct{}, accounts map[common.Hash][]byte, storage map[common.Hash]map[common.Hash][]byte) {
+	if plugins.DefaultPluginLoader == nil {
+		log.Warn("Attempting StateUpdate, but default PluginLoader has not been initialized")
+    return
+	 }
+	PluginStateUpdate(plugins.DefaultPluginLoader, blockRoot, parentRoot, destructs, accounts, storage)
+}

core/state/statedb.go

@@ -967,6 +967,7 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (common.Hash, error) {
 		}
 		// Only update if there's a state transition (skip empty Clique blocks)
 		if parent := s.snap.Root(); parent != root {
+			pluginStateUpdate(root, parent, s.snapDestructs, s.snapAccounts, s.snapStorage)
 			if err := s.snaps.Update(root, parent, s.snapDestructs, s.snapAccounts, s.snapStorage); err != nil {
 				log.Warn("Failed to update snapshot tree", "from", parent, "to", root, "err", err)
 			}