Worker processes consumes S3 versions from the task queue and processes them.
| 33 | |
| 34 | |
| 35 | class Worker(Process): |
| 36 | """Worker processes consumes S3 versions from the task queue and processes them.""" |
| 37 | |
| 38 | def __init__(self, sqs_queue_name: str, task_queue: JoinableQueue) -> None: |
| 39 | """Create a new worker process. |
| 40 | |
| 41 | Args: |
| 42 | sqs_queue_name: Name of the target SQS queue |
| 43 | task_queue: Thread-safe queue of EnqueueTasks to complete |
| 44 | """ |
| 45 | super().__init__() |
| 46 | self._task_queue = task_queue |
| 47 | self._queue = boto3.resource('sqs').get_queue_by_name(QueueName=sqs_queue_name) |
| 48 | |
| 49 | def run(self) -> None: |
| 50 | """Consume tasks from the task queue until an empty task is found.""" |
| 51 | while True: |
| 52 | task = self._task_queue.get() |
| 53 | |
| 54 | if task is None: |
| 55 | self._task_queue.task_done() |
| 56 | return |
| 57 | |
| 58 | task.run(self._queue) |
| 59 | self._task_queue.task_done() |