From 4a9a0d18ee8a24a179a6a86b0c6062d0dff5e5ba Mon Sep 17 00:00:00 2001
From: Roy Crihfield <roy@manteia.ltd>
Date: Wed, 24 Apr 2024 19:02:16 +0800
Subject: [PATCH] update methods

---
 pkg/backend.go         | 12 ++++--------
 pkg/client/database.go |  8 ++++----
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/pkg/backend.go b/pkg/backend.go
index a634e73..c24c018 100644
--- a/pkg/backend.go
+++ b/pkg/backend.go
@@ -97,16 +97,12 @@ func (s *LevelDBBackend) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int
 	return 0, errWriteNotAllowed
 }
 
-func (s *LevelDBBackend) TruncateAncients(n uint64) error {
-	return errWriteNotAllowed
+func (s *LevelDBBackend) TruncateHead(n uint64) (uint64, error) {
+	return 0, errWriteNotAllowed
 }
 
-func (s *LevelDBBackend) TruncateHead(n uint64) error {
-	return errWriteNotAllowed
-}
-
-func (s *LevelDBBackend) TruncateTail(n uint64) error {
-	return errWriteNotAllowed
+func (s *LevelDBBackend) TruncateTail(n uint64) (uint64, error) {
+	return 0, errWriteNotAllowed
 }
 
 func (s *LevelDBBackend) Sync() error {
diff --git a/pkg/client/database.go b/pkg/client/database.go
index f75e52c..7ddb7c9 100644
--- a/pkg/client/database.go
+++ b/pkg/client/database.go
@@ -212,14 +212,14 @@ func (d *DatabaseClient) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int
 
 // TruncateHead satisfies the ethdb.AncientWriter interface.
 // TruncateHead discards all but the first n ancient data from the ancient store.
-func (d *DatabaseClient) TruncateHead(n uint64) error {
-	return errNotSupported
+func (d *DatabaseClient) TruncateHead(n uint64) (uint64, error) {
+	return 0, errNotSupported
 }
 
 // TruncateTail satisfies the ethdb.AncientWriter interface.
 // TruncateTail discards the first n ancient data from the ancient store.
-func (d *DatabaseClient) TruncateTail(n uint64) error {
-	return errNotSupported
+func (d *DatabaseClient) TruncateTail(n uint64) (uint64, error) {
+	return 0, errNotSupported
 }
 
 // Sync satisfies the ethdb.AncientWriter interface