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<?php |
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declare(strict_types=1); |
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namespace Level23\Druid\Tasks; |
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use InvalidArgumentException; |
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use Level23\Druid\DruidClient; |
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use Level23\Druid\Interval\IntervalInterface; |
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abstract class TaskBuilder |
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{ |
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/** |
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* @var DruidClient |
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*/ |
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protected $client; |
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/** |
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* The task ID. If this is not explicitly specified, Druid generates the task ID using task type, |
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* data source name, interval, and date-time stamp. |
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* |
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* @var string|null |
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*/ |
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protected $taskId = null; |
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/** |
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* Check if the given interval is valid for the given dataSource. |
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* |
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* @param string $dataSource |
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* @param \Level23\Druid\Interval\IntervalInterface $interval |
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* |
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* @throws \Level23\Druid\Exceptions\QueryResponseException |
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*/ |
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protected function validateInterval(string $dataSource, IntervalInterface $interval): void |
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{ |
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$fromStr = $interval->getStart()->format('Y-m-d\TH:i:s.000\Z'); |
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$toStr = $interval->getStop()->format('Y-m-d\TH:i:s.000\Z'); |
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$foundFrom = false; |
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$foundTo = false; |
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// Get all intervals and check if our interval is among them. |
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$intervals = array_keys($this->client->metadata()->intervals($dataSource)); |
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foreach ($intervals as $dateStr) { |
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if (!$foundFrom && substr($dateStr, 0, strlen($fromStr)) === $fromStr) { |
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$foundFrom = true; |
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} |
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if (!$foundTo && substr($dateStr, -strlen($toStr)) === $toStr) { |
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$foundTo = true; |
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} |
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if ($foundFrom && $foundTo) { |
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return; |
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} |
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} |
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throw new InvalidArgumentException( |
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'Error, invalid interval given. The given dates do not match a complete interval!' . PHP_EOL . |
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'Given interval: ' . $interval->getInterval() . PHP_EOL . |
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'Valid intervals: ' . implode(', ', $intervals) |
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); |
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} |
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/** |
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* Execute the index task. We will return the task identifier. |
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* |
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* @param \Level23\Druid\Context\TaskContext|array $context |
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* |
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* @return string |
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* @throws \Level23\Druid\Exceptions\QueryResponseException |
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*/ |
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public function execute($context = []): string |
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{ |
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$task = $this->buildTask($context); |
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return $this->client->executeTask($task); |
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} |
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/** |
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* Return the task in Json format. |
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* |
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* @param \Level23\Druid\Context\TaskContext|array $context |
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* |
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* @return string |
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* @throws \Level23\Druid\Exceptions\QueryResponseException |
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*/ |
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public function toJson($context = []): string |
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{ |
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$task = $this->buildTask($context); |
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$json = \json_encode($task->toArray(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES); |
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if (\JSON_ERROR_NONE !== \json_last_error()) { |
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throw new InvalidArgumentException( |
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'json_encode error: ' . \json_last_error_msg() |
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); |
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} |
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return (string)$json; |
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} |
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/** |
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* Return the task as array |
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* |
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* @param \Level23\Druid\Context\TaskContext|array $context |
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* |
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* @return array |
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* @throws \Level23\Druid\Exceptions\QueryResponseException |
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*/ |
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public function toArray($context = []): array |
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{ |
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$task = $this->buildTask($context); |
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return $task->toArray(); |
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} |
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/** |
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* The task ID. If this is not explicitly specified, Druid generates the task ID using task type, |
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* data source name, interval, and date-time stamp. |
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* |
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* @param string $taskId |
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* |
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* @return $this |
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*/ |
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public function taskId(string $taskId) |
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{ |
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$this->taskId = $taskId; |
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return $this; |
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} |
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/** |
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* @param \Level23\Druid\Context\TaskContext|array $context |
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* |
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* @return \Level23\Druid\Tasks\TaskInterface |
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* @throws \Level23\Druid\Exceptions\QueryResponseException |
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*/ |
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abstract protected function buildTask($context): TaskInterface; |
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} |
level23 /
druid-client
