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<?php |
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namespace Doctrine\DBAL\Sharding\SQLAzure; |
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use Doctrine\DBAL\Connection; |
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use Doctrine\DBAL\Sharding\ShardingException; |
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use Doctrine\DBAL\Sharding\ShardManager; |
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use Doctrine\DBAL\Types\Type; |
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use RuntimeException; |
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use function sprintf; |
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/** |
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* Sharding using the SQL Azure Federations support. |
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* |
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* @deprecated |
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*/ |
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class SQLAzureShardManager implements ShardManager |
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{ |
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/** @var string */ |
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private $federationName; |
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/** @var bool */ |
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private $filteringEnabled; |
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/** @var string */ |
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private $distributionKey; |
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/** @var string */ |
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private $distributionType; |
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/** @var Connection */ |
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private $conn; |
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/** @var string|null */ |
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private $currentDistributionValue; |
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/** |
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* @throws ShardingException |
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*/ |
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public function __construct(Connection $conn) |
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{ |
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$this->conn = $conn; |
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$params = $conn->getParams(); |
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if (! isset($params['sharding']['federationName'])) { |
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throw ShardingException::missingDefaultFederationName(); |
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} |
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if (! isset($params['sharding']['distributionKey'])) { |
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throw ShardingException::missingDefaultDistributionKey(); |
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} |
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if (! isset($params['sharding']['distributionType'])) { |
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throw ShardingException::missingDistributionType(); |
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} |
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$this->federationName = $params['sharding']['federationName']; |
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$this->distributionKey = $params['sharding']['distributionKey']; |
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$this->distributionType = $params['sharding']['distributionType']; |
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$this->filteringEnabled = (bool) ($params['sharding']['filteringEnabled'] ?? false); |
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} |
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/** |
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* Gets the name of the federation. |
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* |
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* @return string |
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*/ |
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public function getFederationName() |
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{ |
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return $this->federationName; |
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} |
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/** |
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* Gets the distribution key. |
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* |
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* @return string |
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*/ |
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public function getDistributionKey() |
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{ |
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return $this->distributionKey; |
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} |
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/** |
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* Gets the Doctrine Type name used for the distribution. |
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* |
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* @return string |
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*/ |
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public function getDistributionType() |
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{ |
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return $this->distributionType; |
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} |
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/** |
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* Sets Enabled/Disable filtering on the fly. |
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* |
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* @param bool $flag |
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* |
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* @return void |
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*/ |
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public function setFilteringEnabled($flag) |
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{ |
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$this->filteringEnabled = (bool) $flag; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function selectGlobal() |
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{ |
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if ($this->conn->isTransactionActive()) { |
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throw ShardingException::activeTransaction(); |
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} |
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$sql = 'USE FEDERATION ROOT WITH RESET'; |
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$this->conn->exec($sql); |
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$this->currentDistributionValue = null; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function selectShard($distributionValue) |
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{ |
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if ($this->conn->isTransactionActive()) { |
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throw ShardingException::activeTransaction(); |
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} |
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$platform = $this->conn->getDatabasePlatform(); |
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$sql = sprintf( |
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'USE FEDERATION %s (%s = %s) WITH RESET, FILTERING = %s;', |
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$platform->quoteIdentifier($this->federationName), |
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$platform->quoteIdentifier($this->distributionKey), |
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$this->conn->quote($distributionValue), |
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($this->filteringEnabled ? 'ON' : 'OFF') |
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); |
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$this->conn->exec($sql); |
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$this->currentDistributionValue = $distributionValue; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getCurrentDistributionValue() |
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{ |
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return $this->currentDistributionValue; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getShards() |
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{ |
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$sql = 'SELECT member_id as id, |
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distribution_name as distribution_key, |
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CAST(range_low AS CHAR) AS rangeLow, |
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CAST(range_high AS CHAR) AS rangeHigh |
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FROM sys.federation_member_distributions d |
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INNER JOIN sys.federations f ON f.federation_id = d.federation_id |
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WHERE f.name = ' . $this->conn->quote($this->federationName); |
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return $this->conn->fetchAll($sql); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function queryAll($sql, array $params = [], array $types = []) |
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{ |
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$shards = $this->getShards(); |
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if (! $shards) { |
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throw new RuntimeException('No shards found for ' . $this->federationName); |
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} |
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$result = []; |
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$oldDistribution = $this->getCurrentDistributionValue(); |
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foreach ($shards as $shard) { |
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$this->selectShard($shard['rangeLow']); |
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foreach ($this->conn->fetchAll($sql, $params, $types) as $row) { |
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$result[] = $row; |
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} |
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} |
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if ($oldDistribution === null) { |
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$this->selectGlobal(); |
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} else { |
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$this->selectShard($oldDistribution); |
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} |
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return $result; |
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} |
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/** |
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* Splits Federation at a given distribution value. |
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* |
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* @param mixed $splitDistributionValue |
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* |
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* @return void |
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*/ |
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public function splitFederation($splitDistributionValue) |
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{ |
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$type = Type::getType($this->distributionType); |
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$sql = 'ALTER FEDERATION ' . $this->getFederationName() . ' ' . |
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'SPLIT AT (' . $this->getDistributionKey() . ' = ' . |
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$this->conn->quote($splitDistributionValue, $type->getBindingType()) . ')'; |
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$this->conn->exec($sql); |
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} |
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} |
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doctrine /
dbal
Loading history...
This interface has been deprecated. The supplier of the interface has supplied an explanatory message.
The explanatory message should give you some clue as to whether and when the interface will be removed and what other interface to use instead.