Current File : /www/varak.net/nextcloud.varak.net/lib/private/DB/Connection.php
<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OC\DB;
use Doctrine\Common\EventManager;
use Doctrine\DBAL\Cache\QueryCacheProfile;
use Doctrine\DBAL\Configuration;
use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
use Doctrine\DBAL\Driver;
use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
use Doctrine\DBAL\Exception;
use Doctrine\DBAL\Exception\ConnectionLost;
use Doctrine\DBAL\Platforms\MySQLPlatform;
use Doctrine\DBAL\Platforms\OraclePlatform;
use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
use Doctrine\DBAL\Platforms\SqlitePlatform;
use Doctrine\DBAL\Result;
use Doctrine\DBAL\Schema\Schema;
use Doctrine\DBAL\Statement;
use OC\DB\QueryBuilder\Partitioned\PartitionedQueryBuilder;
use OC\DB\QueryBuilder\Partitioned\PartitionSplit;
use OC\DB\QueryBuilder\QueryBuilder;
use OC\DB\QueryBuilder\Sharded\AutoIncrementHandler;
use OC\DB\QueryBuilder\Sharded\CrossShardMoveHelper;
use OC\DB\QueryBuilder\Sharded\RoundRobinShardMapper;
use OC\DB\QueryBuilder\Sharded\ShardConnectionManager;
use OC\DB\QueryBuilder\Sharded\ShardDefinition;
use OC\SystemConfig;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\DB\QueryBuilder\Sharded\IShardMapper;
use OCP\Diagnostics\IEventLogger;
use OCP\ICacheFactory;
use OCP\IDBConnection;
use OCP\ILogger;
use OCP\IRequestId;
use OCP\PreConditionNotMetException;
use OCP\Profiler\IProfiler;
use OCP\Security\ISecureRandom;
use OCP\Server;
use Psr\Clock\ClockInterface;
use Psr\Log\LoggerInterface;
use function count;
use function in_array;
class Connection extends PrimaryReadReplicaConnection {
/** @var string */
protected $tablePrefix;
/** @var \OC\DB\Adapter $adapter */
protected $adapter;
/** @var SystemConfig */
private $systemConfig;
private ClockInterface $clock;
private LoggerInterface $logger;
protected $lockedTable = null;
/** @var int */
protected $queriesBuilt = 0;
/** @var int */
protected $queriesExecuted = 0;
/** @var DbDataCollector|null */
protected $dbDataCollector = null;
private array $lastConnectionCheck = [];
protected ?float $transactionActiveSince = null;
/** @var array<string, int> */
protected $tableDirtyWrites = [];
protected bool $logDbException = false;
private ?array $transactionBacktrace = null;
protected bool $logRequestId;
protected string $requestId;
/** @var array<string, list<string>> */
protected array $partitions;
/** @var ShardDefinition[] */
protected array $shards = [];
protected ShardConnectionManager $shardConnectionManager;
protected AutoIncrementHandler $autoIncrementHandler;
protected bool $isShardingEnabled;
public const SHARD_PRESETS = [
'filecache' => [
'companion_keys' => [
'file_id',
],
'companion_tables' => [
'filecache_extended',
'files_metadata',
],
'primary_key' => 'fileid',
'shard_key' => 'storage',
'table' => 'filecache',
],
];
/**
* Initializes a new instance of the Connection class.
*
* @throws \Exception
*/
public function __construct(
private array $params,
Driver $driver,
?Configuration $config = null,
?EventManager $eventManager = null
) {
if (!isset($params['adapter'])) {
throw new \Exception('adapter not set');
}
if (!isset($params['tablePrefix'])) {
throw new \Exception('tablePrefix not set');
}
/**
* @psalm-suppress InternalMethod
*/
parent::__construct($params, $driver, $config, $eventManager);
$this->adapter = new $params['adapter']($this);
$this->tablePrefix = $params['tablePrefix'];
$this->isShardingEnabled = isset($this->params['sharding']) && !empty($this->params['sharding']);
if ($this->isShardingEnabled) {
/** @psalm-suppress InvalidArrayOffset */
$this->shardConnectionManager = $this->params['shard_connection_manager'] ?? Server::get(ShardConnectionManager::class);
/** @psalm-suppress InvalidArrayOffset */
$this->autoIncrementHandler = $this->params['auto_increment_handler'] ?? new AutoIncrementHandler(
Server::get(ICacheFactory::class),
$this->shardConnectionManager,
);
}
$this->systemConfig = \OC::$server->getSystemConfig();
$this->clock = Server::get(ClockInterface::class);
$this->logger = Server::get(LoggerInterface::class);
$this->logRequestId = $this->systemConfig->getValue('db.log_request_id', false);
$this->logDbException = $this->systemConfig->getValue('db.log_exceptions', false);
$this->requestId = Server::get(IRequestId::class)->getId();
/** @var \OCP\Profiler\IProfiler */
$profiler = Server::get(IProfiler::class);
if ($profiler->isEnabled()) {
$this->dbDataCollector = new DbDataCollector($this);
$profiler->add($this->dbDataCollector);
$debugStack = new BacktraceDebugStack();
$this->dbDataCollector->setDebugStack($debugStack);
$this->_config->setSQLLogger($debugStack);
}
/** @var array<string, array{shards: array[], mapper: ?string}> $shardConfig */
$shardConfig = $this->params['sharding'] ?? [];
$shardNames = array_keys($shardConfig);
$this->shards = array_map(function (array $config, string $name) {
if (!isset(self::SHARD_PRESETS[$name])) {
throw new \Exception("Shard preset $name not found");
}
$shardMapperClass = $config['mapper'] ?? RoundRobinShardMapper::class;
$shardMapper = Server::get($shardMapperClass);
if (!$shardMapper instanceof IShardMapper) {
throw new \Exception("Invalid shard mapper: $shardMapperClass");
}
return new ShardDefinition(
self::SHARD_PRESETS[$name]['table'],
self::SHARD_PRESETS[$name]['primary_key'],
self::SHARD_PRESETS[$name]['companion_keys'],
self::SHARD_PRESETS[$name]['shard_key'],
$shardMapper,
self::SHARD_PRESETS[$name]['companion_tables'],
$config['shards']
);
}, $shardConfig, $shardNames);
$this->shards = array_combine($shardNames, $this->shards);
$this->partitions = array_map(function (ShardDefinition $shard) {
return array_merge([$shard->table], $shard->companionTables);
}, $this->shards);
$this->setNestTransactionsWithSavepoints(true);
}
/**
* @return IDBConnection[]
*/
public function getShardConnections(): array {
$connections = [];
if ($this->isShardingEnabled) {
foreach ($this->shards as $shardDefinition) {
foreach ($shardDefinition->getAllShards() as $shard) {
/** @var ConnectionAdapter $connection */
$connections[] = $this->shardConnectionManager->getConnection($shardDefinition, $shard);
}
}
}
return $connections;
}
/**
* @throws Exception
*/
public function connect($connectionName = null) {
try {
if ($this->_conn) {
$this->reconnectIfNeeded();
/** @psalm-suppress InternalMethod */
return parent::connect();
}
$this->lastConnectionCheck[$this->getConnectionName()] = time();
// Only trigger the event logger for the initial connect call
$eventLogger = Server::get(IEventLogger::class);
$eventLogger->start('connect:db', 'db connection opened');
/** @psalm-suppress InternalMethod */
$status = parent::connect();
$eventLogger->end('connect:db');
return $status;
} catch (Exception $e) {
// throw a new exception to prevent leaking info from the stacktrace
throw new Exception('Failed to connect to the database: ' . $e->getMessage(), $e->getCode());
}
}
protected function performConnect(?string $connectionName = null): bool {
if (($connectionName ?? 'replica') === 'replica'
&& count($this->params['replica']) === 1
&& $this->params['primary'] === $this->params['replica'][0]) {
return parent::performConnect('primary');
}
return parent::performConnect($connectionName);
}
public function getStats(): array {
return [
'built' => $this->queriesBuilt,
'executed' => $this->queriesExecuted,
];
}
/**
* Returns a QueryBuilder for the connection.
*/
public function getQueryBuilder(): IQueryBuilder {
$this->queriesBuilt++;
$builder = new QueryBuilder(
new ConnectionAdapter($this),
$this->systemConfig,
$this->logger
);
if ($this->isShardingEnabled && count($this->partitions) > 0) {
$builder = new PartitionedQueryBuilder(
$builder,
$this->shards,
$this->shardConnectionManager,
$this->autoIncrementHandler,
);
foreach ($this->partitions as $name => $tables) {
$partition = new PartitionSplit($name, $tables);
$builder->addPartition($partition);
}
return $builder;
} else {
return $builder;
}
}
/**
* Gets the QueryBuilder for the connection.
*
* @return \Doctrine\DBAL\Query\QueryBuilder
* @deprecated please use $this->getQueryBuilder() instead
*/
public function createQueryBuilder() {
$backtrace = $this->getCallerBacktrace();
$this->logger->debug('Doctrine QueryBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
$this->queriesBuilt++;
return parent::createQueryBuilder();
}
/**
* Gets the ExpressionBuilder for the connection.
*
* @return \Doctrine\DBAL\Query\Expression\ExpressionBuilder
* @deprecated please use $this->getQueryBuilder()->expr() instead
*/
public function getExpressionBuilder() {
$backtrace = $this->getCallerBacktrace();
$this->logger->debug('Doctrine ExpressionBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
$this->queriesBuilt++;
return parent::getExpressionBuilder();
}
/**
* Get the file and line that called the method where `getCallerBacktrace()` was used
*
* @return string
*/
protected function getCallerBacktrace() {
$traces = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);
// 0 is the method where we use `getCallerBacktrace`
// 1 is the target method which uses the method we want to log
if (isset($traces[1])) {
return $traces[1]['file'] . ':' . $traces[1]['line'];
}
return '';
}
/**
* @return string
*/
public function getPrefix() {
return $this->tablePrefix;
}
/**
* Prepares an SQL statement.
*
* @param string $statement The SQL statement to prepare.
* @param int|null $limit
* @param int|null $offset
*
* @return Statement The prepared statement.
* @throws Exception
*/
public function prepare($sql, $limit = null, $offset = null): Statement {
if ($limit === -1 || $limit === null) {
$limit = null;
} else {
$limit = (int) $limit;
}
if ($offset !== null) {
$offset = (int) $offset;
}
if (!is_null($limit)) {
$platform = $this->getDatabasePlatform();
$sql = $platform->modifyLimitQuery($sql, $limit, $offset);
}
$statement = $this->finishQuery($sql);
return parent::prepare($statement);
}
/**
* Executes an, optionally parametrized, SQL query.
*
* If the query is parametrized, a prepared statement is used.
* If an SQLLogger is configured, the execution is logged.
*
* @param string $sql The SQL query to execute.
* @param array $params The parameters to bind to the query, if any.
* @param array $types The types the previous parameters are in.
* @param \Doctrine\DBAL\Cache\QueryCacheProfile|null $qcp The query cache profile, optional.
*
* @return Result The executed statement.
*
* @throws \Doctrine\DBAL\Exception
*/
public function executeQuery(string $sql, array $params = [], $types = [], ?QueryCacheProfile $qcp = null): Result {
$tables = $this->getQueriedTables($sql);
$now = $this->clock->now()->getTimestamp();
$dirtyTableWrites = [];
foreach ($tables as $table) {
$lastAccess = $this->tableDirtyWrites[$table] ?? 0;
// Only very recent writes are considered dirty
if ($lastAccess >= ($now - 3)) {
$dirtyTableWrites[] = $table;
}
}
if ($this->isTransactionActive()) {
// Transacted queries go to the primary. The consistency of the primary guarantees that we can not run
// into a dirty read.
} elseif (count($dirtyTableWrites) === 0) {
// No tables read that could have been written already in the same request and no transaction active
// so we can switch back to the replica for reading as long as no writes happen that switch back to the primary
// We cannot log here as this would log too early in the server boot process
$this->ensureConnectedToReplica();
} else {
// Read to a table that has been written to previously
// While this might not necessarily mean that we did a read after write it is an indication for a code path to check
$this->logger->log(
(int) ($this->systemConfig->getValue('loglevel_dirty_database_queries', null) ?? 0),
'dirty table reads: ' . $sql,
[
'tables' => array_keys($this->tableDirtyWrites),
'reads' => $tables,
'exception' => new \Exception('dirty table reads: ' . $sql),
],
);
// To prevent a dirty read on a replica that is slightly out of sync, we
// switch back to the primary. This is detrimental for performance but
// safer for consistency.
$this->ensureConnectedToPrimary();
}
$sql = $this->finishQuery($sql);
$this->queriesExecuted++;
$this->logQueryToFile($sql);
try {
return parent::executeQuery($sql, $params, $types, $qcp);
} catch (\Exception $e) {
$this->logDatabaseException($e);
throw $e;
}
}
/**
* Helper function to get the list of tables affected by a given query
* used to track dirty tables that received a write with the current request
*/
private function getQueriedTables(string $sql): array {
$re = '/(\*PREFIX\*\w+)/mi';
preg_match_all($re, $sql, $matches);
return array_map([$this, 'replaceTablePrefix'], $matches[0] ?? []);
}
/**
* @throws Exception
*/
public function executeUpdate(string $sql, array $params = [], array $types = []): int {
return $this->executeStatement($sql, $params, $types);
}
/**
* Executes an SQL INSERT/UPDATE/DELETE query with the given parameters
* and returns the number of affected rows.
*
* This method supports PDO binding types as well as DBAL mapping types.
*
* @param string $sql The SQL query.
* @param array $params The query parameters.
* @param array $types The parameter types.
*
* @return int The number of affected rows.
*
* @throws \Doctrine\DBAL\Exception
*/
public function executeStatement($sql, array $params = [], array $types = []): int {
$tables = $this->getQueriedTables($sql);
foreach ($tables as $table) {
$this->tableDirtyWrites[$table] = $this->clock->now()->getTimestamp();
}
$sql = $this->finishQuery($sql);
$this->queriesExecuted++;
$this->logQueryToFile($sql);
try {
return (int)parent::executeStatement($sql, $params, $types);
} catch (\Exception $e) {
$this->logDatabaseException($e);
throw $e;
}
}
protected function logQueryToFile(string $sql): void {
$logFile = $this->systemConfig->getValue('query_log_file');
if ($logFile !== '' && is_writable(dirname($logFile)) && (!file_exists($logFile) || is_writable($logFile))) {
$prefix = '';
if ($this->systemConfig->getValue('query_log_file_requestid') === 'yes') {
$prefix .= Server::get(IRequestId::class)->getId() . "\t";
}
$postfix = '';
if ($this->systemConfig->getValue('query_log_file_backtrace') === 'yes') {
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
array_pop($trace);
$postfix .= '; ' . json_encode($trace);
}
// FIXME: Improve to log the actual target db host
$isPrimary = $this->connections['primary'] === $this->_conn;
$prefix .= ' ' . ($isPrimary === true ? 'primary' : 'replica') . ' ';
$prefix .= ' ' . $this->getTransactionNestingLevel() . ' ';
file_put_contents(
$this->systemConfig->getValue('query_log_file', ''),
$prefix . $sql . $postfix . "\n",
FILE_APPEND
);
}
}
/**
* Returns the ID of the last inserted row, or the last value from a sequence object,
* depending on the underlying driver.
*
* Note: This method may not return a meaningful or consistent result across different drivers,
* because the underlying database may not even support the notion of AUTO_INCREMENT/IDENTITY
* columns or sequences.
*
* @param string $seqName Name of the sequence object from which the ID should be returned.
*
* @return int the last inserted ID.
* @throws Exception
*/
public function lastInsertId($name = null): int {
if ($name) {
$name = $this->replaceTablePrefix($name);
}
return $this->adapter->lastInsertId($name);
}
/**
* @internal
* @throws Exception
*/
public function realLastInsertId($seqName = null) {
return parent::lastInsertId($seqName);
}
/**
* Insert a row if the matching row does not exists. To accomplish proper race condition avoidance
* it is needed that there is also a unique constraint on the values. Then this method will
* catch the exception and return 0.
*
* @param string $table The table name (will replace *PREFIX* with the actual prefix)
* @param array $input data that should be inserted into the table (column name => value)
* @param array|null $compare List of values that should be checked for "if not exists"
* If this is null or an empty array, all keys of $input will be compared
* Please note: text fields (clob) must not be used in the compare array
* @return int number of inserted rows
* @throws \Doctrine\DBAL\Exception
* @deprecated 15.0.0 - use unique index and "try { $db->insert() } catch (UniqueConstraintViolationException $e) {}" instead, because it is more reliable and does not have the risk for deadlocks - see https://github.com/nextcloud/server/pull/12371
*/
public function insertIfNotExist($table, $input, ?array $compare = null) {
try {
return $this->adapter->insertIfNotExist($table, $input, $compare);
} catch (\Exception $e) {
$this->logDatabaseException($e);
throw $e;
}
}
public function insertIgnoreConflict(string $table, array $values) : int {
try {
return $this->adapter->insertIgnoreConflict($table, $values);
} catch (\Exception $e) {
$this->logDatabaseException($e);
throw $e;
}
}
private function getType($value) {
if (is_bool($value)) {
return IQueryBuilder::PARAM_BOOL;
} elseif (is_int($value)) {
return IQueryBuilder::PARAM_INT;
} else {
return IQueryBuilder::PARAM_STR;
}
}
/**
* Insert or update a row value
*
* @param string $table
* @param array $keys (column name => value)
* @param array $values (column name => value)
* @param array $updatePreconditionValues ensure values match preconditions (column name => value)
* @return int number of new rows
* @throws \OCP\DB\Exception
* @throws PreConditionNotMetException
*/
public function setValues(string $table, array $keys, array $values, array $updatePreconditionValues = []): int {
try {
$insertQb = $this->getQueryBuilder();
$insertQb->insert($table)
->values(
array_map(function ($value) use ($insertQb) {
return $insertQb->createNamedParameter($value, $this->getType($value));
}, array_merge($keys, $values))
);
return $insertQb->executeStatement();
} catch (\OCP\DB\Exception $e) {
if (!in_array($e->getReason(), [
\OCP\DB\Exception::REASON_CONSTRAINT_VIOLATION,
\OCP\DB\Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION,
])
) {
throw $e;
}
// value already exists, try update
$updateQb = $this->getQueryBuilder();
$updateQb->update($table);
foreach ($values as $name => $value) {
$updateQb->set($name, $updateQb->createNamedParameter($value, $this->getType($value)));
}
$where = [];
$whereValues = array_merge($keys, $updatePreconditionValues);
foreach ($whereValues as $name => $value) {
if ($value === '') {
$where[] = $updateQb->expr()->emptyString(
$name
);
} else {
$where[] = $updateQb->expr()->eq(
$name,
$updateQb->createNamedParameter($value, $this->getType($value)),
$this->getType($value)
);
}
}
$updateQb->where($updateQb->expr()->andX(...$where));
$affected = $updateQb->executeStatement();
if ($affected === 0 && !empty($updatePreconditionValues)) {
throw new PreConditionNotMetException();
}
return 0;
}
}
/**
* Create an exclusive read+write lock on a table
*
* @param string $tableName
*
* @throws \BadMethodCallException When trying to acquire a second lock
* @throws Exception
* @since 9.1.0
*/
public function lockTable($tableName) {
if ($this->lockedTable !== null) {
throw new \BadMethodCallException('Can not lock a new table until the previous lock is released.');
}
$tableName = $this->tablePrefix . $tableName;
$this->lockedTable = $tableName;
$this->adapter->lockTable($tableName);
}
/**
* Release a previous acquired lock again
*
* @throws Exception
* @since 9.1.0
*/
public function unlockTable() {
$this->adapter->unlockTable();
$this->lockedTable = null;
}
/**
* returns the error code and message as a string for logging
* works with DoctrineException
* @return string
*/
public function getError() {
$msg = $this->errorCode() . ': ';
$errorInfo = $this->errorInfo();
if (!empty($errorInfo)) {
$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
$msg .= 'Driver Message = '.$errorInfo[2];
}
return $msg;
}
public function errorCode() {
return -1;
}
public function errorInfo() {
return [];
}
/**
* Drop a table from the database if it exists
*
* @param string $table table name without the prefix
*
* @throws Exception
*/
public function dropTable($table) {
$table = $this->tablePrefix . trim($table);
$schema = $this->createSchemaManager();
if ($schema->tablesExist([$table])) {
$schema->dropTable($table);
}
}
/**
* Check if a table exists
*
* @param string $table table name without the prefix
*
* @return bool
* @throws Exception
*/
public function tableExists($table) {
$table = $this->tablePrefix . trim($table);
$schema = $this->createSchemaManager();
return $schema->tablesExist([$table]);
}
protected function finishQuery(string $statement): string {
$statement = $this->replaceTablePrefix($statement);
$statement = $this->adapter->fixupStatement($statement);
if ($this->logRequestId) {
return $statement . " /* reqid: " . $this->requestId . " */";
} else {
return $statement;
}
}
// internal use
/**
* @param string $statement
* @return string
*/
protected function replaceTablePrefix($statement) {
return str_replace('*PREFIX*', $this->tablePrefix, $statement);
}
/**
* Check if a transaction is active
*
* @return bool
* @since 8.2.0
*/
public function inTransaction() {
return $this->getTransactionNestingLevel() > 0;
}
/**
* Escape a parameter to be used in a LIKE query
*
* @param string $param
* @return string
*/
public function escapeLikeParameter($param) {
return addcslashes($param, '\\_%');
}
/**
* Check whether or not the current database support 4byte wide unicode
*
* @return bool
* @since 11.0.0
*/
public function supports4ByteText() {
if (!$this->getDatabasePlatform() instanceof MySQLPlatform) {
return true;
}
return $this->getParams()['charset'] === 'utf8mb4';
}
/**
* Create the schema of the connected database
*
* @return Schema
* @throws Exception
*/
public function createSchema() {
$migrator = $this->getMigrator();
return $migrator->createSchema();
}
/**
* Migrate the database to the given schema
*
* @param Schema $toSchema
* @param bool $dryRun If true, will return the sql queries instead of running them.
*
* @throws Exception
*
* @return string|null Returns a string only if $dryRun is true.
*/
public function migrateToSchema(Schema $toSchema, bool $dryRun = false) {
$migrator = $this->getMigrator();
if ($dryRun) {
return $migrator->generateChangeScript($toSchema);
} else {
$migrator->migrate($toSchema);
foreach ($this->getShardConnections() as $shardConnection) {
$shardConnection->migrateToSchema($toSchema);
}
}
}
private function getMigrator() {
// TODO properly inject those dependencies
$random = \OC::$server->get(ISecureRandom::class);
$platform = $this->getDatabasePlatform();
$config = \OC::$server->getConfig();
$dispatcher = Server::get(\OCP\EventDispatcher\IEventDispatcher::class);
if ($platform instanceof SqlitePlatform) {
return new SQLiteMigrator($this, $config, $dispatcher);
} elseif ($platform instanceof OraclePlatform) {
return new OracleMigrator($this, $config, $dispatcher);
} else {
return new Migrator($this, $config, $dispatcher);
}
}
public function beginTransaction() {
if (!$this->inTransaction()) {
$this->transactionBacktrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
$this->transactionActiveSince = microtime(true);
}
return parent::beginTransaction();
}
public function commit() {
$result = parent::commit();
if ($this->getTransactionNestingLevel() === 0) {
$timeTook = microtime(true) - $this->transactionActiveSince;
$this->transactionBacktrace = null;
$this->transactionActiveSince = null;
if ($timeTook > 1) {
$logLevel = match (true) {
$timeTook > 20 * 60 => ILogger::ERROR,
$timeTook > 5 * 60 => ILogger::WARN,
$timeTook > 10 => ILogger::INFO,
default => ILogger::DEBUG,
};
$this->logger->log(
$logLevel,
'Transaction took ' . $timeTook . 's',
[
'exception' => new \Exception('Transaction took ' . $timeTook . 's'),
'timeSpent' => $timeTook,
]
);
}
}
return $result;
}
public function rollBack() {
$result = parent::rollBack();
if ($this->getTransactionNestingLevel() === 0) {
$timeTook = microtime(true) - $this->transactionActiveSince;
$this->transactionBacktrace = null;
$this->transactionActiveSince = null;
if ($timeTook > 1) {
$logLevel = match (true) {
$timeTook > 20 * 60 => ILogger::ERROR,
$timeTook > 5 * 60 => ILogger::WARN,
$timeTook > 10 => ILogger::INFO,
default => ILogger::DEBUG,
};
$this->logger->log(
$logLevel,
'Transaction rollback took longer than 1s: ' . $timeTook,
[
'exception' => new \Exception('Long running transaction rollback'),
'timeSpent' => $timeTook,
]
);
}
}
return $result;
}
private function reconnectIfNeeded(): void {
if (
!isset($this->lastConnectionCheck[$this->getConnectionName()]) ||
time() <= $this->lastConnectionCheck[$this->getConnectionName()] + 30 ||
$this->isTransactionActive()
) {
return;
}
try {
$this->_conn->query($this->getDriver()->getDatabasePlatform()->getDummySelectSQL());
$this->lastConnectionCheck[$this->getConnectionName()] = time();
} catch (ConnectionLost|\Exception $e) {
$this->logger->warning('Exception during connectivity check, closing and reconnecting', ['exception' => $e]);
$this->close();
}
}
private function getConnectionName(): string {
return $this->isConnectedToPrimary() ? 'primary' : 'replica';
}
/**
* @return IDBConnection::PLATFORM_MYSQL|IDBConnection::PLATFORM_ORACLE|IDBConnection::PLATFORM_POSTGRES|IDBConnection::PLATFORM_SQLITE
*/
public function getDatabaseProvider(): string {
$platform = $this->getDatabasePlatform();
if ($platform instanceof MySQLPlatform) {
return IDBConnection::PLATFORM_MYSQL;
} elseif ($platform instanceof OraclePlatform) {
return IDBConnection::PLATFORM_ORACLE;
} elseif ($platform instanceof PostgreSQLPlatform) {
return IDBConnection::PLATFORM_POSTGRES;
} elseif ($platform instanceof SqlitePlatform) {
return IDBConnection::PLATFORM_SQLITE;
} else {
throw new \Exception('Database ' . $platform::class . ' not supported');
}
}
/**
* @internal Should only be used inside the QueryBuilder, ExpressionBuilder and FunctionBuilder
* All apps and API code should not need this and instead use provided functionality from the above.
*/
public function getServerVersion(): string {
/** @var ServerInfoAwareConnection $this->_conn */
return $this->_conn->getServerVersion();
}
/**
* Log a database exception if enabled
*
* @param \Exception $exception
* @return void
*/
public function logDatabaseException(\Exception $exception): void {
if ($this->logDbException) {
if ($exception instanceof Exception\UniqueConstraintViolationException) {
$this->logger->info($exception->getMessage(), ['exception' => $exception, 'transaction' => $this->transactionBacktrace]);
} else {
$this->logger->error($exception->getMessage(), ['exception' => $exception, 'transaction' => $this->transactionBacktrace]);
}
}
}
public function getShardDefinition(string $name): ?ShardDefinition {
return $this->shards[$name] ?? null;
}
public function getCrossShardMoveHelper(): CrossShardMoveHelper {
return new CrossShardMoveHelper($this->shardConnectionManager);
}
}
Mini Shell