/**
* {@inheritdoc}
*/
public function getConnectionAdapter(Host $host)
{
if (isset($this->connectionAdapters[$host->getConnectionType()])) {
$connectionIdentifier = spl_object_hash($host);
if (isset($this->connections[$connectionIdentifier]) === false) {
$connectionAdapterArguments = $host->getConnectionOptions();
$connectionAdapterArguments['hostname'] = $host->getHostname();
$this->connections[$connectionIdentifier] = ObjectFactory::getInstance()->newInstance($this->connectionAdapters[$host->getConnectionType()], $connectionAdapterArguments);
}
return $this->connections[$connectionIdentifier];
}
}
/**
* Ensures a connected connection adapter for a host.
* Returns the connection adapter instance.
*
* @param Host $host
*
* @return ConnectionAdapterInterface
*
* @throws ConnectionException
*/
public function ensureConnection(Host $host)
{
if ($host->hasConnection()) {
$connection = $host->getConnection();
if ($connection->isConnected() === false && $connection->connect() === false) {
throw new ConnectionException(sprintf('Could not connect to "%s" through "%s".', $host->getHostname(), $host->getConnectionType()));
}
return $connection;
}
throw new ConnectionException(sprintf('No connection adapter of type "%s" found on host.', $host->getConnectionType()));
}
/**
* Returns the configured hosts for $stage.
*
* @param string $stage
*
* @return Host[]
*
* @throws UnexpectedValueException when $stage is not a valid type
*/
public function getHostsByStage($stage)
{
if (Host::isValidStage($stage) === false) {
throw new UnexpectedValueException(sprintf("'%s' is not a valid stage.", $stage));
}
$hosts = array();
foreach ($this->getHosts() as $host) {
if ($host->getStage() === $stage) {
$hosts[] = $host;
}
}
return $hosts;
}
