core, accounts, eth, trie: handle genesis state missing (#28171)

* core, accounts, eth, trie: handle genesis state missing

* core, eth, trie: polish

* core: manage txpool subscription in mainpool

* eth/backend: fix test

* cmd, eth: fix test

* core/rawdb, trie/triedb/pathdb: address comments

* eth, trie: address comments

* eth: inline the function

* eth: use synced flag

* core/txpool: revert changes in txpool

* core, eth, trie: rename functions

core/rawdb/accessors_sync.go

@@ -76,3 +76,25 @@ func DeleteSkeletonHeader(db ethdb.KeyValueWriter, number uint64) {
 		log.Crit("Failed to delete skeleton header", "err", err)
 	}
 }
+
+const (
+	StateSyncUnknown  = uint8(0) // flags the state snap sync is unknown
+	StateSyncRunning  = uint8(1) // flags the state snap sync is not completed yet
+	StateSyncFinished = uint8(2) // flags the state snap sync is completed
+)
+
+// ReadSnapSyncStatusFlag retrieves the state snap sync status flag.
+func ReadSnapSyncStatusFlag(db ethdb.KeyValueReader) uint8 {
+	blob, err := db.Get(snapSyncStatusFlagKey)
+	if err != nil || len(blob) != 1 {
+		return StateSyncUnknown
+	}
+	return blob[0]
+}
+
+// WriteSnapSyncStatusFlag stores the state snap sync status flag into database.
+func WriteSnapSyncStatusFlag(db ethdb.KeyValueWriter, flag uint8) {
+	if err := db.Put(snapSyncStatusFlagKey, []byte{flag}); err != nil {
+		log.Crit("Failed to store sync status flag", "err", err)
+	}
+}

core/rawdb/database.go

@@ -555,7 +555,7 @@ func InspectDatabase(db ethdb.Database, keyPrefix, keyStart []byte) error {
 				lastPivotKey, fastTrieProgressKey, snapshotDisabledKey, SnapshotRootKey, snapshotJournalKey,
 				snapshotGeneratorKey, snapshotRecoveryKey, txIndexTailKey, fastTxLookupLimitKey,
 				uncleanShutdownKey, badBlockKey, transitionStatusKey, skeletonSyncStatusKey,
-				persistentStateIDKey, trieJournalKey, snapshotSyncStatusKey,
+				persistentStateIDKey, trieJournalKey, snapshotSyncStatusKey, snapSyncStatusFlagKey,
 			} {
 				if bytes.Equal(key, meta) {
 					metadata.Add(size)

core/rawdb/schema.go

@@ -91,6 +91,9 @@ var (
 	// transitionStatusKey tracks the eth2 transition status.
 	transitionStatusKey = []byte("eth2-transition")
 
+	// snapSyncStatusFlagKey flags that status of snap sync.
+	snapSyncStatusFlagKey = []byte("SnapSyncStatus")
+
 	// Data item prefixes (use single byte to avoid mixing data types, avoid `i`, used for indexes).
 	headerPrefix       = []byte("h") // headerPrefix + num (uint64 big endian) + hash -> header
 	headerTDSuffix     = []byte("t") // headerPrefix + num (uint64 big endian) + hash + headerTDSuffix -> td