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/var/www/vhosts/ihelp.ro/httpdocs/vendor/cakephp/cakephp/src/Database
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/var/www/vhosts/ihelp.ro/httpdocs/vendor/cakephp/cakephp/src/Database/Connection.php
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<?php declare(strict_types=1); /** * CakePHP(tm) : Rapid Development Framework (https://cakephp.org) * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org) * * Licensed under The MIT License * For full copyright and license information, please see the LICENSE.txt * Redistributions of files must retain the above copyright notice. * * @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org) * @link https://cakephp.org CakePHP(tm) Project * @since 3.0.0 * @license https://opensource.org/licenses/mit-license.php MIT License */ namespace Cake\Database; use Cake\Cache\Cache; use Cake\Core\App; use Cake\Core\Retry\CommandRetry; use Cake\Database\Exception\MissingConnectionException; use Cake\Database\Exception\MissingDriverException; use Cake\Database\Exception\MissingExtensionException; use Cake\Database\Exception\NestedTransactionRollbackException; use Cake\Database\Log\LoggedQuery; use Cake\Database\Log\LoggingStatement; use Cake\Database\Log\QueryLogger; use Cake\Database\Retry\ReconnectStrategy; use Cake\Database\Schema\CachedCollection; use Cake\Database\Schema\Collection as SchemaCollection; use Cake\Database\Schema\CollectionInterface as SchemaCollectionInterface; use Cake\Datasource\ConnectionInterface; use Cake\Log\Engine\BaseLog; use Cake\Log\Log; use Psr\Log\LoggerInterface; use Psr\SimpleCache\CacheInterface; use RuntimeException; use Throwable; /** * Represents a connection with a database server. */ class Connection implements ConnectionInterface { use TypeConverterTrait; /** * Contains the configuration params for this connection. * * @var array<string, mixed> */ protected $_config; /** * Driver object, responsible for creating the real connection * and provide specific SQL dialect. * * @var \Cake\Database\DriverInterface */ protected $_driver; /** * Contains how many nested transactions have been started. * * @var int */ protected $_transactionLevel = 0; /** * Whether a transaction is active in this connection. * * @var bool */ protected $_transactionStarted = false; /** * Whether this connection can and should use savepoints for nested * transactions. * * @var bool */ protected $_useSavePoints = false; /** * Whether to log queries generated during this connection. * * @var bool */ protected $_logQueries = false; /** * Logger object instance. * * @var \Psr\Log\LoggerInterface|null */ protected $_logger; /** * Cacher object instance. * * @var \Psr\SimpleCache\CacheInterface|null */ protected $cacher; /** * The schema collection object * * @var \Cake\Database\Schema\CollectionInterface|null */ protected $_schemaCollection; /** * NestedTransactionRollbackException object instance, will be stored if * the rollback method is called in some nested transaction. * * @var \Cake\Database\Exception\NestedTransactionRollbackException|null */ protected $nestedTransactionRollbackException; /** * Constructor. * * ### Available options: * * - `driver` Sort name or FCQN for driver. * - `log` Boolean indicating whether to use query logging. * - `name` Connection name. * - `cacheMetaData` Boolean indicating whether metadata (datasource schemas) should be cached. * If set to a string it will be used as the name of cache config to use. * - `cacheKeyPrefix` Custom prefix to use when generation cache keys. Defaults to connection name. * * @param array<string, mixed> $config Configuration array. */ public function __construct(array $config) { $this->_config = $config; $driverConfig = array_diff_key($config, array_flip([ 'name', 'driver', 'log', 'cacheMetaData', 'cacheKeyPrefix', ])); $this->_driver = $this->createDriver($config['driver'] ?? '', $driverConfig); if (!empty($config['log'])) { $this->enableQueryLogging((bool)$config['log']); } } /** * Destructor * * Disconnects the driver to release the connection. */ public function __destruct() { if ($this->_transactionStarted && class_exists(Log::class)) { Log::warning('The connection is going to be closed but there is an active transaction.'); } } /** * @inheritDoc */ public function config(): array { return $this->_config; } /** * @inheritDoc */ public function configName(): string { return $this->_config['name'] ?? ''; } /** * Sets the driver instance. If a string is passed it will be treated * as a class name and will be instantiated. * * @param \Cake\Database\DriverInterface|string $driver The driver instance to use. * @param array<string, mixed> $config Config for a new driver. * @throws \Cake\Database\Exception\MissingDriverException When a driver class is missing. * @throws \Cake\Database\Exception\MissingExtensionException When a driver's PHP extension is missing. * @return $this * @deprecated 4.4.0 Setting the driver is deprecated. Use the connection config instead. */ public function setDriver($driver, $config = []) { deprecationWarning('Setting the driver is deprecated. Use the connection config instead.'); $this->_driver = $this->createDriver($driver, $config); return $this; } /** * Creates driver from name, class name or instance. * * @param \Cake\Database\DriverInterface|string $name Driver name, class name or instance. * @param array $config Driver config if $name is not an instance. * @return \Cake\Database\DriverInterface * @throws \Cake\Database\Exception\MissingDriverException When a driver class is missing. * @throws \Cake\Database\Exception\MissingExtensionException When a driver's PHP extension is missing. */ protected function createDriver($name, array $config): DriverInterface { $driver = $name; if (is_string($driver)) { /** @psalm-var class-string<\Cake\Database\DriverInterface>|null $className */ $className = App::className($driver, 'Database/Driver'); if ($className === null) { throw new MissingDriverException(['driver' => $driver, 'connection' => $this->configName()]); } $driver = new $className($config); } if (!$driver->enabled()) { throw new MissingExtensionException(['driver' => get_class($driver), 'name' => $this->configName()]); } return $driver; } /** * Get the retry wrapper object that is allows recovery from server disconnects * while performing certain database actions, such as executing a query. * * @return \Cake\Core\Retry\CommandRetry The retry wrapper */ public function getDisconnectRetry(): CommandRetry { return new CommandRetry(new ReconnectStrategy($this)); } /** * Gets the driver instance. * * @return \Cake\Database\DriverInterface */ public function getDriver(): DriverInterface { return $this->_driver; } /** * Connects to the configured database. * * @throws \Cake\Database\Exception\MissingConnectionException If database connection could not be established. * @return bool true, if the connection was already established or the attempt was successful. */ public function connect(): bool { try { return $this->_driver->connect(); } catch (MissingConnectionException $e) { throw $e; } catch (Throwable $e) { throw new MissingConnectionException( [ 'driver' => App::shortName(get_class($this->_driver), 'Database/Driver'), 'reason' => $e->getMessage(), ], null, $e ); } } /** * Disconnects from database server. * * @return void */ public function disconnect(): void { $this->_driver->disconnect(); } /** * Returns whether connection to database server was already established. * * @return bool */ public function isConnected(): bool { return $this->_driver->isConnected(); } /** * Prepares a SQL statement to be executed. * * @param \Cake\Database\Query|string $query The SQL to convert into a prepared statement. * @return \Cake\Database\StatementInterface */ public function prepare($query): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($query) { $statement = $this->_driver->prepare($query); if ($this->_logQueries) { $statement = $this->_newLogger($statement); } return $statement; }); } /** * Executes a query using $params for interpolating values and $types as a hint for each * those params. * * @param string $sql SQL to be executed and interpolated with $params * @param array $params list or associative array of params to be interpolated in $sql as values * @param array $types list or associative array of types to be used for casting values in query * @return \Cake\Database\StatementInterface executed statement */ public function execute(string $sql, array $params = [], array $types = []): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($sql, $params, $types) { $statement = $this->prepare($sql); if (!empty($params)) { $statement->bind($params, $types); } $statement->execute(); return $statement; }); } /** * Compiles a Query object into a SQL string according to the dialect for this * connection's driver * * @param \Cake\Database\Query $query The query to be compiled * @param \Cake\Database\ValueBinder $binder Value binder * @return string */ public function compileQuery(Query $query, ValueBinder $binder): string { return $this->getDriver()->compileQuery($query, $binder)[1]; } /** * Executes the provided query after compiling it for the specific driver * dialect and returns the executed Statement object. * * @param \Cake\Database\Query $query The query to be executed * @return \Cake\Database\StatementInterface executed statement */ public function run(Query $query): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($query) { $statement = $this->prepare($query); $query->getValueBinder()->attachTo($statement); $statement->execute(); return $statement; }); } /** * Executes a SQL statement and returns the Statement object as result. * * @param string $sql The SQL query to execute. * @return \Cake\Database\StatementInterface */ public function query(string $sql): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($sql) { $statement = $this->prepare($sql); $statement->execute(); return $statement; }); } /** * Create a new Query instance for this connection. * * @return \Cake\Database\Query */ public function newQuery(): Query { return new Query($this); } /** * Sets a Schema\Collection object for this connection. * * @param \Cake\Database\Schema\CollectionInterface $collection The schema collection object * @return $this */ public function setSchemaCollection(SchemaCollectionInterface $collection) { $this->_schemaCollection = $collection; return $this; } /** * Gets a Schema\Collection object for this connection. * * @return \Cake\Database\Schema\CollectionInterface */ public function getSchemaCollection(): SchemaCollectionInterface { if ($this->_schemaCollection !== null) { return $this->_schemaCollection; } if (!empty($this->_config['cacheMetadata'])) { return $this->_schemaCollection = new CachedCollection( new SchemaCollection($this), empty($this->_config['cacheKeyPrefix']) ? $this->configName() : $this->_config['cacheKeyPrefix'], $this->getCacher() ); } return $this->_schemaCollection = new SchemaCollection($this); } /** * Executes an INSERT query on the specified table. * * @param string $table the table to insert values in * @param array $values values to be inserted * @param array<int|string, string> $types Array containing the types to be used for casting * @return \Cake\Database\StatementInterface */ public function insert(string $table, array $values, array $types = []): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($table, $values, $types) { $columns = array_keys($values); return $this->newQuery()->insert($columns, $types) ->into($table) ->values($values) ->execute(); }); } /** * Executes an UPDATE statement on the specified table. * * @param string $table the table to update rows from * @param array $values values to be updated * @param array $conditions conditions to be set for update statement * @param array<string> $types list of associative array containing the types to be used for casting * @return \Cake\Database\StatementInterface */ public function update(string $table, array $values, array $conditions = [], array $types = []): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($table, $values, $conditions, $types) { return $this->newQuery()->update($table) ->set($values, $types) ->where($conditions, $types) ->execute(); }); } /** * Executes a DELETE statement on the specified table. * * @param string $table the table to delete rows from * @param array $conditions conditions to be set for delete statement * @param array<string> $types list of associative array containing the types to be used for casting * @return \Cake\Database\StatementInterface */ public function delete(string $table, array $conditions = [], array $types = []): StatementInterface { return $this->getDisconnectRetry()->run(function () use ($table, $conditions, $types) { return $this->newQuery()->delete($table) ->where($conditions, $types) ->execute(); }); } /** * Starts a new transaction. * * @return void */ public function begin(): void { if (!$this->_transactionStarted) { if ($this->_logQueries) { $this->log('BEGIN'); } $this->getDisconnectRetry()->run(function (): void { $this->_driver->beginTransaction(); }); $this->_transactionLevel = 0; $this->_transactionStarted = true; $this->nestedTransactionRollbackException = null; return; } $this->_transactionLevel++; if ($this->isSavePointsEnabled()) { $this->createSavePoint((string)$this->_transactionLevel); } } /** * Commits current transaction. * * @return bool true on success, false otherwise */ public function commit(): bool { if (!$this->_transactionStarted) { return false; } if ($this->_transactionLevel === 0) { if ($this->wasNestedTransactionRolledback()) { /** @var \Cake\Database\Exception\NestedTransactionRollbackException $e */ $e = $this->nestedTransactionRollbackException; $this->nestedTransactionRollbackException = null; throw $e; } $this->_transactionStarted = false; $this->nestedTransactionRollbackException = null; if ($this->_logQueries) { $this->log('COMMIT'); } return $this->_driver->commitTransaction(); } if ($this->isSavePointsEnabled()) { $this->releaseSavePoint((string)$this->_transactionLevel); } $this->_transactionLevel--; return true; } /** * Rollback current transaction. * * @param bool|null $toBeginning Whether the transaction should be rolled back to the * beginning of it. Defaults to false if using savepoints, or true if not. * @return bool */ public function rollback(?bool $toBeginning = null): bool { if (!$this->_transactionStarted) { return false; } $useSavePoint = $this->isSavePointsEnabled(); if ($toBeginning === null) { $toBeginning = !$useSavePoint; } if ($this->_transactionLevel === 0 || $toBeginning) { $this->_transactionLevel = 0; $this->_transactionStarted = false; $this->nestedTransactionRollbackException = null; if ($this->_logQueries) { $this->log('ROLLBACK'); } $this->_driver->rollbackTransaction(); return true; } $savePoint = $this->_transactionLevel--; if ($useSavePoint) { $this->rollbackSavepoint($savePoint); } elseif ($this->nestedTransactionRollbackException === null) { $this->nestedTransactionRollbackException = new NestedTransactionRollbackException(); } return true; } /** * Enables/disables the usage of savepoints, enables only if driver the allows it. * * If you are trying to enable this feature, make sure you check * `isSavePointsEnabled()` to verify that savepoints were enabled successfully. * * @param bool $enable Whether save points should be used. * @return $this */ public function enableSavePoints(bool $enable = true) { if ($enable === false) { $this->_useSavePoints = false; } else { $this->_useSavePoints = $this->_driver->supports(DriverInterface::FEATURE_SAVEPOINT); } return $this; } /** * Disables the usage of savepoints. * * @return $this */ public function disableSavePoints() { $this->_useSavePoints = false; return $this; } /** * Returns whether this connection is using savepoints for nested transactions * * @return bool true if enabled, false otherwise */ public function isSavePointsEnabled(): bool { return $this->_useSavePoints; } /** * Creates a new save point for nested transactions. * * @param string|int $name Save point name or id * @return void */ public function createSavePoint($name): void { $this->execute($this->_driver->savePointSQL($name))->closeCursor(); } /** * Releases a save point by its name. * * @param string|int $name Save point name or id * @return void */ public function releaseSavePoint($name): void { $sql = $this->_driver->releaseSavePointSQL($name); if ($sql) { $this->execute($sql)->closeCursor(); } } /** * Rollback a save point by its name. * * @param string|int $name Save point name or id * @return void */ public function rollbackSavepoint($name): void { $this->execute($this->_driver->rollbackSavePointSQL($name))->closeCursor(); } /** * Run driver specific SQL to disable foreign key checks. * * @return void */ public function disableForeignKeys(): void { $this->getDisconnectRetry()->run(function (): void { $this->execute($this->_driver->disableForeignKeySQL())->closeCursor(); }); } /** * Run driver specific SQL to enable foreign key checks. * * @return void */ public function enableForeignKeys(): void { $this->getDisconnectRetry()->run(function (): void { $this->execute($this->_driver->enableForeignKeySQL())->closeCursor(); }); } /** * Returns whether the driver supports adding or dropping constraints * to already created tables. * * @return bool true if driver supports dynamic constraints * @deprecated 4.3.0 Fixtures no longer dynamically drop and create constraints. */ public function supportsDynamicConstraints(): bool { return $this->_driver->supportsDynamicConstraints(); } /** * @inheritDoc */ public function transactional(callable $callback) { $this->begin(); try { $result = $callback($this); } catch (Throwable $e) { $this->rollback(false); throw $e; } if ($result === false) { $this->rollback(false); return false; } try { $this->commit(); } catch (NestedTransactionRollbackException $e) { $this->rollback(false); throw $e; } return $result; } /** * Returns whether some nested transaction has been already rolled back. * * @return bool */ protected function wasNestedTransactionRolledback(): bool { return $this->nestedTransactionRollbackException instanceof NestedTransactionRollbackException; } /** * @inheritDoc */ public function disableConstraints(callable $callback) { return $this->getDisconnectRetry()->run(function () use ($callback) { $this->disableForeignKeys(); try { $result = $callback($this); } finally { $this->enableForeignKeys(); } return $result; }); } /** * Checks if a transaction is running. * * @return bool True if a transaction is running else false. */ public function inTransaction(): bool { return $this->_transactionStarted; } /** * Quotes value to be used safely in database query. * * This uses `PDO::quote()` and requires `supportsQuoting()` to work. * * @param mixed $value The value to quote. * @param \Cake\Database\TypeInterface|string|int $type Type to be used for determining kind of quoting to perform * @return string Quoted value */ public function quote($value, $type = 'string'): string { [$value, $type] = $this->cast($value, $type); return $this->_driver->quote($value, $type); } /** * Checks if using `quote()` is supported. * * This is not required to use `quoteIdentifier()`. * * @return bool */ public function supportsQuoting(): bool { return $this->_driver->supports(DriverInterface::FEATURE_QUOTE); } /** * Quotes a database identifier (a column name, table name, etc..) to * be used safely in queries without the risk of using reserved words. * * This does not require `supportsQuoting()` to work. * * @param string $identifier The identifier to quote. * @return string */ public function quoteIdentifier(string $identifier): string { return $this->_driver->quoteIdentifier($identifier); } /** * Enables or disables metadata caching for this connection * * Changing this setting will not modify existing schema collections objects. * * @param string|bool $cache Either boolean false to disable metadata caching, or * true to use `_cake_model_` or the name of the cache config to use. * @return void */ public function cacheMetadata($cache): void { $this->_schemaCollection = null; $this->_config['cacheMetadata'] = $cache; if (is_string($cache)) { $this->cacher = null; } } /** * @inheritDoc */ public function setCacher(CacheInterface $cacher) { $this->cacher = $cacher; return $this; } /** * @inheritDoc */ public function getCacher(): CacheInterface { if ($this->cacher !== null) { return $this->cacher; } $configName = $this->_config['cacheMetadata'] ?? '_cake_model_'; if (!is_string($configName)) { $configName = '_cake_model_'; } if (!class_exists(Cache::class)) { throw new RuntimeException( 'To use caching you must either set a cacher using Connection::setCacher()' . ' or require the cakephp/cache package in your composer config.' ); } return $this->cacher = Cache::pool($configName); } /** * Enable/disable query logging * * @param bool $enable Enable/disable query logging * @return $this */ public function enableQueryLogging(bool $enable = true) { $this->_logQueries = $enable; return $this; } /** * Disable query logging * * @return $this */ public function disableQueryLogging() { $this->_logQueries = false; return $this; } /** * Check if query logging is enabled. * * @return bool */ public function isQueryLoggingEnabled(): bool { return $this->_logQueries; } /** * Sets a logger * * @param \Psr\Log\LoggerInterface $logger Logger object * @return $this * @psalm-suppress ImplementedReturnTypeMismatch */ public function setLogger(LoggerInterface $logger) { $this->_logger = $logger; return $this; } /** * Gets the logger object * * @return \Psr\Log\LoggerInterface logger instance */ public function getLogger(): LoggerInterface { if ($this->_logger !== null) { return $this->_logger; } if (!class_exists(BaseLog::class)) { throw new RuntimeException( 'For logging you must either set a logger using Connection::setLogger()' . ' or require the cakephp/log package in your composer config.' ); } return $this->_logger = new QueryLogger(['connection' => $this->configName()]); } /** * Logs a Query string using the configured logger object. * * @param string $sql string to be logged * @return void */ public function log(string $sql): void { $query = new LoggedQuery(); $query->query = $sql; $this->getLogger()->debug((string)$query, ['query' => $query]); } /** * Returns a new statement object that will log the activity * for the passed original statement instance. * * @param \Cake\Database\StatementInterface $statement the instance to be decorated * @return \Cake\Database\Log\LoggingStatement */ protected function _newLogger(StatementInterface $statement): LoggingStatement { $log = new LoggingStatement($statement, $this->_driver); $log->setLogger($this->getLogger()); return $log; } /** * Returns an array that can be used to describe the internal state of this * object. * * @return array<string, mixed> */ public function __debugInfo(): array { $secrets = [ 'password' => '*****', 'username' => '*****', 'host' => '*****', 'database' => '*****', 'port' => '*****', ]; $replace = array_intersect_key($secrets, $this->_config); $config = $replace + $this->_config; return [ 'config' => $config, 'driver' => $this->_driver, 'transactionLevel' => $this->_transactionLevel, 'transactionStarted' => $this->_transactionStarted, 'useSavePoints' => $this->_useSavePoints, 'logQueries' => $this->_logQueries, 'logger' => $this->_logger, ]; } }
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