From c1d7dbfc38e8f48b42d957afad2696a8e56b740b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Blot?= Date: Fri, 4 Jan 2019 10:20:04 +0100 Subject: Fix various player save issues (performance penalty on sql backends + bugs) * PostgreSQL & SQLite3 doesn't setModified(false) on RemotePlayer, then player is saved on each server save call. This results in heavy useless writes. * PostgreSQL & SQLite3 ack engine meta write whereas db commit hasn't been performed. If commit failed write has failed. We mustn't notify engine write is done. * serializing player meta must not setModified(false) because it didn't ensure write has been done * add RemotePlayer::on_successfull_save callback to do the flag update on a successful save --- src/database/database-files.cpp | 3 ++- src/database/database-postgresql.cpp | 3 ++- src/database/database-sqlite3.cpp | 3 ++- 3 files changed, 6 insertions(+), 3 deletions(-) (limited to 'src/database') diff --git a/src/database/database-files.cpp b/src/database/database-files.cpp index f42535348..b1c79c94a 100644 --- a/src/database/database-files.cpp +++ b/src/database/database-files.cpp @@ -105,7 +105,8 @@ void PlayerDatabaseFiles::savePlayer(RemotePlayer *player) if (!fs::safeWriteToFile(path, ss.str())) { infostream << "Failed to write " << path << std::endl; } - player->setModified(false); + + player->on_successful_save(); } bool PlayerDatabaseFiles::removePlayer(const std::string &name) diff --git a/src/database/database-postgresql.cpp b/src/database/database-postgresql.cpp index eec838ef0..f5f8e3adf 100644 --- a/src/database/database-postgresql.cpp +++ b/src/database/database-postgresql.cpp @@ -527,8 +527,9 @@ void PlayerDatabasePostgreSQL::savePlayer(RemotePlayer *player) }; execPrepared("save_player_metadata", 3, meta_values); } - sao->getMeta().setModified(false); endSave(); + + player->on_successful_save(); } bool PlayerDatabasePostgreSQL::loadPlayer(RemotePlayer *player, PlayerSAO *sao) diff --git a/src/database/database-sqlite3.cpp b/src/database/database-sqlite3.cpp index aa156bbbd..7a79fb187 100644 --- a/src/database/database-sqlite3.cpp +++ b/src/database/database-sqlite3.cpp @@ -528,9 +528,10 @@ void PlayerDatabaseSQLite3::savePlayer(RemotePlayer *player) sqlite3_vrfy(sqlite3_step(m_stmt_player_metadata_add), SQLITE_DONE); sqlite3_reset(m_stmt_player_metadata_add); } - sao->getMeta().setModified(false); endSave(); + + player->on_successful_save(); } bool PlayerDatabaseSQLite3::loadPlayer(RemotePlayer *player, PlayerSAO *sao) -- cgit v1.2.3