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Verify database connection on interval (#9665)

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This commit is contained in:
Loïc Blot
2020-04-15 08:01:11 +02:00
committed by GitHub
parent 62c62f3829
commit 5c588f89e7
9 changed files with 65 additions and 33 deletions
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36
src/database/database-postgresql.cpp
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@@ -90,13 +90,19 @@ void Database_PostgreSQL::connectToDatabase()
initStatements();
}
void Database_PostgreSQL::verifyDatabase()
void Database_PostgreSQL::pingDatabase()
{
if (PQstatus(m_conn) == CONNECTION_OK)
return;
// Verify DB connection with ping
try {
ping();
} catch (const DatabaseException &e) {
// If ping failed, show the error and try reconnect
PQreset(m_conn);
PQreset(m_conn);
ping();
errorstream << e.what() << std::endl
<< "Reconnecting to database " << m_connect_string << std::endl;
connectToDatabase();
}
}
void Database_PostgreSQL::ping()
@@ -151,7 +157,7 @@ void Database_PostgreSQL::createTableIfNotExists(const std::string &table_name,
void Database_PostgreSQL::beginSave()
{
verifyDatabase();
pingDatabase();
checkResults(PQexec(m_conn, "BEGIN;"));
}
@@ -227,7 +233,7 @@ bool MapDatabasePostgreSQL::saveBlock(const v3s16 &pos, const std::string &data)
return false;
}
verifyDatabase();
pingDatabase();
s32 x, y, z;
x = htonl(pos.X);
@@ -251,7 +257,7 @@ bool MapDatabasePostgreSQL::saveBlock(const v3s16 &pos, const std::string &data)
void MapDatabasePostgreSQL::loadBlock(const v3s16 &pos, std::string *block)
{
verifyDatabase();
pingDatabase();
s32 x, y, z;
x = htonl(pos.X);
@@ -275,7 +281,7 @@ void MapDatabasePostgreSQL::loadBlock(const v3s16 &pos, std::string *block)
bool MapDatabasePostgreSQL::deleteBlock(const v3s16 &pos)
{
verifyDatabase();
pingDatabase();
s32 x, y, z;
x = htonl(pos.X);
@@ -293,7 +299,7 @@ bool MapDatabasePostgreSQL::deleteBlock(const v3s16 &pos)
void MapDatabasePostgreSQL::listAllLoadableBlocks(std::vector<v3s16> &dst)
{
verifyDatabase();
pingDatabase();
PGresult *results = execPrepared("list_all_loadable_blocks", 0,
NULL, NULL, NULL, false, false);
@@ -435,7 +441,7 @@ void PlayerDatabasePostgreSQL::initStatements()
bool PlayerDatabasePostgreSQL::playerDataExists(const std::string &playername)
{
verifyDatabase();
pingDatabase();
const char *values[] = { playername.c_str() };
PGresult *results = execPrepared("load_player", 1, values, false);
@@ -451,7 +457,7 @@ void PlayerDatabasePostgreSQL::savePlayer(RemotePlayer *player)
if (!sao)
return;
verifyDatabase();
pingDatabase();
v3f pos = sao->getBasePosition();
std::string pitch = ftos(sao->getLookPitch());
@@ -535,7 +541,7 @@ void PlayerDatabasePostgreSQL::savePlayer(RemotePlayer *player)
bool PlayerDatabasePostgreSQL::loadPlayer(RemotePlayer *player, PlayerSAO *sao)
{
sanity_check(sao);
verifyDatabase();
pingDatabase();
const char *values[] = { player->getName() };
PGresult *results = execPrepared("load_player", 1, values, false, false);
@@ -610,7 +616,7 @@ bool PlayerDatabasePostgreSQL::removePlayer(const std::string &name)
if (!playerDataExists(name))
return false;
verifyDatabase();
pingDatabase();
const char *values[] = { name.c_str() };
execPrepared("remove_player", 1, values);
@@ -620,7 +626,7 @@ bool PlayerDatabasePostgreSQL::removePlayer(const std::string &name)
void PlayerDatabasePostgreSQL::listPlayers(std::vector<std::string> &res)
{
verifyDatabase();
pingDatabase();
PGresult *results = execPrepared("load_player_list", 0, NULL, false);