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How to use empty_queues method in lettuce-tools

Best Python code snippet using lettuce-tools_python

sqs_queue.py

Source:sqs_queue.py

1import boto32import ujson3import time4import multiprocessing5from stepist.flow.workers.worker_engine import BaseWorkerEngine6class SQSAdapter(BaseWorkerEngine):7    def __init__(self, session=boto3, visibility_timeout=None,8                 message_retention_period=None, wait_seconds=5,9                 data_pickler=ujson):10        self.data_pickler = data_pickler11        self.session = session12        self.sqs_client = session.client('sqs')13        self.sqs_resource = session.resource('sqs')14        self.message_retention_period = message_retention_period15        self.visibility_timeout = visibility_timeout16        self.wait_seconds = wait_seconds17        self._queues = dict()18        self._steps = dict()19    def add_job(self, step, data, **kwargs):20        queue_name = self.get_queue_name(step)21        queue = self._queues.get(queue_name, None)22        if not queue:23            raise RuntimeError("Queue %s not found" % queue_name)24        kwargs = {25            'MessageBody': self.data_pickler.dumps(data.get_dict()),26            'MessageAttributes': {},27            'DelaySeconds': 028        }29        queue.send_message(**kwargs)30    def add_jobs(self, step, jobs_data, **kwargs):31        for job_data in jobs_data:32            self.add_job(step, job_data, **kwargs)33    def receive_job(self, step, wait_seconds=5):34        q_name = self.get_queue_name(step)35        queue = self.session.resource('sqs').get_queue_by_name(36            QueueName=q_name)37        kwargs = {38            'WaitTimeSeconds': wait_seconds,39            'MaxNumberOfMessages': 1,40            'MessageAttributeNames': ['All'],41            'AttributeNames': ['All'],42        }43        messages = queue.receive_messages(**kwargs)44        if not messages:45            return None46        if len(messages) != 1:47            raise RuntimeError("Got more than 1 job for some reason")48        msg = messages[0]49        msg_result = {50            'Id': msg.message_id,51            'ReceiptHandle': msg.receipt_handle52        }53        queue.delete_messages(Entries=[msg_result])54        return self.data_pickler.loads(msg.body)55    def process(self, *steps, die_when_empty=False, die_on_error=True):56        queues = []57        for step in steps:58            queues.append(self.get_queue_name(step))59        if not queues:60            return61        mng = multiprocessing.Manager()62        empty_queues = mng.dict({q: False for q in queues})63        processes = []64        for queue_name in queues:65            p = multiprocessing.Process(66                target=self.process_queue,67                kwargs={68                    'queue_name': queue_name,69                    'die_on_error': die_on_error,70                    'empty_queues': empty_queues,71                    'die_when_empty': die_when_empty,72                },73            )74            p.start()75            processes.append(p)76        for p in processes:77            p.join()78            p.terminate()79    def process_queue(self, queue_name, die_on_error, empty_queues,80                      die_when_empty):81        try:82            queue = self.session.resource('sqs').get_queue_by_name(QueueName=queue_name)83        except Exception:84            empty_queues[queue_name] = True85            raise86        if not queue_name or not queue:87            empty_queues[queue_name] = True88            return89        while True:90            kwargs = {91                'WaitTimeSeconds': self.wait_seconds,92                'MaxNumberOfMessages': 10,93                'MessageAttributeNames': ['All'],94                'AttributeNames': ['All'],95            }96            messages = queue.receive_messages(**kwargs)97            if not messages:98                empty_queues[queue_name] = True99                if all(list(empty_queues.values())) and die_when_empty:100                    exit()101                time.sleep(self.wait_seconds)102                continue103            empty_queues[queue_name] = False104            msg_results = []105            for msg in messages:106                data = self.data_pickler.loads(msg.body)107                try:108                    self._steps[queue_name].receive_job(**data)109                except Exception:110                    empty_queues[queue_name] = True111                    if die_on_error:112                        raise113                msg_results.append({114                    'Id': msg.message_id,115                    'ReceiptHandle': msg.receipt_handle116                })117            if msg_results:118                queue.delete_messages(Entries=msg_results)119    def flush_queue(self, step):120        raise NotImplemented("Not implemented yet. Delete queue using "121                             "SQS dashboard")122    def jobs_count(self, *steps):123        jobs = 0124        for step in steps:125            queue_name = self.get_queue_name(step)126            sqs_q = self.sqs_client.get_queue_url(QueueName=queue_name)127            attrs = self.sqs_client.get_queue_attributes(128                sqs_q, ['ApproximateNumberOfMessages'])129            jobs += attrs.get("ApproximateNumberOfMessages", 0)130        return jobs131    def register_worker(self, step):132        queue_name = self.get_queue_name(step)133        attrs = {}134        kwargs = {135            'QueueName': queue_name,136            'Attributes': attrs,137        }138        if self.message_retention_period is not None:139            attrs['MessageRetentionPeriod'] = str(self.message_retention_period)140        if self.visibility_timeout is not None:141            attrs['VisibilityTimeout'] = str(self.visibility_timeout)142        self.sqs_client.create_queue(**kwargs)143        queue = self.sqs_resource.get_queue_by_name(QueueName=queue_name)144        self._queues[queue_name] = queue145        self._steps[queue_name] = step146    def monitor_steps(self, step_keys, monitoring_for_sec):147        pass148    def get_queue_name(self, step):149        return step.step_key().replace(":", "-")150def _move_first_to_the_end(a):151    return a[1:] + [a[0]]152class DieWhenEmpty:153    def __init__(self, active, queues):154        self.active = active155        self.queues = queues156        self.queus_no_jobs = set()157    def update_status(self, queue_name, no_job):158        if no_job:159            self.queus_no_jobs.add(queue_name)160        elif queue_name in self.queus_no_jobs:161            self.queus_no_jobs.remove(queue_name)162    def __bool__(self):...

d23.py

Source:d23.py

1import collections2import intcode3import sys4program = [int(x) for x in open("../input/23", "r").readline().split(",")]5computers = [intcode.Computer(program, network_id=i) for i in range(50)]6queues = [collections.deque([i]) for i in range(len(computers))]7output_buffers = [[] for _ in range(len(computers))]8waiting = [False for _ in range(len(computers))]9prev_nat_x, prev_nat_y = -1, -110nat_x, nat_y = 0, 011pt1 = False12while True:13    for i in range(len(computers)):14        c = computers[i]15        c.step()16        if c.SIG_INPUT:17            if len(queues[i]) > 0:18                c.input = queues[i].popleft()19                waiting[i] = False20            else:21                c.input = -122                waiting[i] = True23        if c.SIG_OUTPUT:24            output_buffers[i].append(c.output)25            c.output = None26            waiting[i] = False27            if len(output_buffers[i]) == 3:28                addr, x, y = output_buffers[i]29                output_buffers[i] = []30                if addr == 255:31                    if not pt1:32                        print("pt1", y)33                        pt1 = True34                    nat_x, nat_y = x, y35                else:36                    queues[addr].append(x)37                    queues[addr].append(y)38    empty_queues = True39    for q in queues:40        if len(q) > 0:41            empty_queues = False42            break43    all_waiting = True44    for w in waiting:45        if not w:46            all_waiting = False47            break48    if empty_queues and all_waiting:49        queues[0].append(nat_x)50        queues[0].append(nat_y)51        if nat_y == prev_nat_y:52            print("pt2", nat_y)53            sys.exit()...

parallelisation.py

Source:parallelisation.py

...20    print(f'==> Properly Terminating {len(children)} child Processes & Threads...', flush=True)21    for terminator in terminators:22        terminator.set()23    24    empty_queues(queues)2526    pbar = tqdm(total=len(children), ascii=True, ncols=100, unit_scale=True)27    while len(children) > 0:28        alive_children = []29        for child in children:30            if child.is_alive():31                child.join(timeout=1)32                alive_children.append(child)33            else:34                pbar.update(1)35        children = alive_children36    pbar.close()37    38    empty_queues(queues)394041def empty_queues(queues):42    for queue in queues:43        try:44            while not queue.empty():45                queue.get(False)46        except Exception:
...

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