[hotfix] fix log file create failed caused by name too long

file/filename.cc

@@ -26,14 +26,20 @@ static const std::string kRocksDBBlobFileExt = "blob";
 
 // Given a path, flatten the path name by replacing all chars not in
 // {[0-9,a-z,A-Z,-,_,.]} with _. And append '_LOG\0' at the end.
+// If the given path append the '_LOG\0' longer then 255, only the last 255 characters will be kept.
 // Return the number of chars stored in dest not including the trailing '\0'.
 static size_t GetInfoLogPrefix(const std::string& path, char* dest, int len) {
   const char suffix[] = "_LOG";
+  const size_t file_name_length_limit = 255;
 
   size_t write_idx = 0;
   size_t i = 0;
   size_t src_len = path.size();
 
+  if (path.length() > file_name_length_limit - sizeof(suffix)) {
+    i = path.length() - (file_name_length_limit - sizeof(suffix));
+  }
+
   while (i < src_len && write_idx < len - sizeof(suffix)) {
     if ((path[i] >= 'a' && path[i] <= 'z') ||
         (path[i] >= '0' && path[i] <= '9') ||