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<?php |
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namespace Acquia\Cloud\Database; |
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use Acquia\Cloud\Environment\CloudEnvironment; |
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use Acquia\Cloud\Environment\CloudEnvironmentAware; |
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use Acquia\Cloud\Environment\CloudEnvironmentInterface; |
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class DatabaseService implements CloudEnvironmentAware, DatabaseServiceInterface |
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{ |
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/** |
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* @var \Acquia\Cloud\Environment\CloudEnvironmentInterface |
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*/ |
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private $cloudEnvironment; |
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/** |
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* @var \Net_DNS2_Resolver |
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*/ |
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private $resolver; |
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/** |
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* @param \Acquia\Cloud\Environment\CloudEnvironmentInterface $cloudEnvironment |
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*/ |
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public function __construct(CloudEnvironmentInterface $cloudEnvironment = null) |
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{ |
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if ($cloudEnvironment === null) { |
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$cloudEnvironment = new CloudEnvironment(); |
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} |
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$this->setCloudEnvironment($cloudEnvironment); |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @return \Acquia\Cloud\Database\DatabaseService |
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*/ |
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public function setCloudEnvironment(CloudEnvironmentInterface $cloudEnvironment) |
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{ |
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$this->cloudEnvironment = $cloudEnvironment; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getCloudEnvironment() |
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{ |
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return $this->cloudEnvironment; |
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} |
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/** |
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* @param \Net_DNS2_Resolver $resolver |
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* |
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* @return \Acquia\Cloud\Database\DatabaseService |
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*/ |
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public function setResolver(\Net_DNS2_Resolver $resolver) |
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{ |
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$this->resolver = $resolver; |
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return $this; |
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} |
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/** |
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* @return \Net_DNS2_Resolver |
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*/ |
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public function getResolver() |
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{ |
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if (!isset($this->resolver)) { |
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$options = array('nameservers' => array('127.0.0.1', 'dns-master')); |
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$this->resolver = new \Net_DNS2_Resolver($options); |
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} |
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return $this->resolver; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function credentials($dbName) |
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{ |
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$creds = $this->cloudEnvironment->serviceCredentials(); |
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if (!isset($creds['databases'][$dbName])) { |
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throw new \OutOfBoundsException('Invalid database: ' . $dbName); |
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} |
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$database = $creds['databases'][$dbName]; |
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$host = $this->getCurrentHost($database['db_cluster_id']); |
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$database['host'] = ($host) ?: key($database['db_url_ha']); |
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return new DatabaseCredentials($database); |
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} |
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/** |
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* @param in $clusterId |
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* |
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* @return string |
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*/ |
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public function getCurrentHost($clusterId) |
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{ |
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try { |
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$resolver = $this->getResolver(); |
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$response = $resolver->query('cluster-' . $clusterId . '.mysql', 'CNAME'); |
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return $response->answer[0]->cname; |
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} catch (\Net_DNS2_Exception $e) { |
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return ''; |
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} |
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} |
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} |
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