/**
* @param PoolingShardConnection $connection
* @return Success|Failure
*/
private function checkPoolingShardConnection(PoolingShardConnection $connection)
{
// TODO Check all shards, instead of just the active one.
$isConnected = $connection->ping();
$data = [$connection->getActiveShardId() => $isConnected ? 'connected' : 'not connected'];
if ($isConnected) {
return new Success(get_class($connection), $data);
}
return new Failure(get_class($connection), $data);
}
/**
* @param string $sql
* @param array $params
* @param array $types
*
* @return array
*
* @throws \RuntimeException
*/
public function queryAll($sql, array $params, array $types)
{
$shards = $this->getShards();
if (!$shards) {
throw new \RuntimeException("No shards found.");
}
$result = array();
$oldDistribution = $this->getCurrentDistributionValue();
foreach ($shards as $shard) {
$this->selectShard($shard['id']);
foreach ($this->conn->fetchAll($sql, $params, $types) as $row) {
$result[] = $row;
}
}
if ($oldDistribution === null) {
$this->selectGlobal();
} else {
$this->selectShard($oldDistribution);
}
return $result;
}
/**
* @param string $distributionValue
*
* @return void
*/
public function selectShard($distributionValue)
{
$shardId = $this->choser->pickShard($distributionValue, $this->conn);
$this->conn->connect($shardId);
$this->currentDistributionValue = $distributionValue;
}
public function __construct(PoolingShardConnection $conn)
{
$params = $conn->getParams();
$this->conn = $conn;
$this->choser = $params['shardChoser'];
}
public function testCheckPoolingShardConnectionFailed()
{
$this->poolingShardConnection->method('ping')->willReturn(false);
$actual = (new CheckConnection($this->poolingShardConnection))->check();
self::assertInstanceOf(Failure::class, $actual);
}