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Add events bus when inserting or updating new object in arangodb (#1144)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,165 @@ | ||
| import argparse | ||
| import hashlib | ||
| import json | ||
| import logging | ||
| import multiprocessing | ||
| import os | ||
|
|
||
| from kombu import Connection, Exchange, Queue | ||
| from kombu.mixins import ConsumerMixin | ||
|
|
||
| from core.config.config import yeti_config | ||
| from core.events.message import EventMessage, LogMessage | ||
| from core.schemas.task import EventTask, LogTask, TaskType | ||
| from core.taskmanager import TaskManager | ||
| from core.taskscheduler import get_plugins_list | ||
|
|
||
| # Register root logger for tasks | ||
| logger = logging.getLogger("task") | ||
| logger.propagate = False | ||
| formatter = logging.Formatter( | ||
| "[%(asctime)s: %(levelname)s/%(processName)s] %(message)s" | ||
| ) | ||
| handler = logging.StreamHandler() | ||
| handler.setFormatter(formatter) | ||
| logger.addHandler(handler) | ||
|
|
||
|
|
||
| class Consumer(ConsumerMixin): | ||
| def __init__(self, task_class: EventTask | LogTask, stop_event, connection, queues): | ||
| self.task_class = task_class | ||
| self._stop_event = stop_event | ||
| self.connection = connection | ||
| self.queues = queues | ||
| self._logger = None | ||
| get_plugins_list(task_class) | ||
|
|
||
| @property | ||
| def should_stop(self): | ||
| return self._stop_event.is_set() | ||
|
|
||
| @property | ||
| def logger(self): | ||
| if self._logger is None: | ||
| name = self.task_class.__name__.lower().replace("task", "") | ||
| self._logger = logging.getLogger(f"task.{name}") | ||
| self._logger.propagate = False | ||
| formatter = logging.Formatter( | ||
| "[%(asctime)s: %(levelname)s/%(processName)s] %(message)s" | ||
| ) | ||
| handler = logging.StreamHandler() | ||
| handler.setFormatter(formatter) | ||
| self._logger.addHandler(handler) | ||
| return self._logger | ||
|
|
||
| def get_consumers(self, consumer, channel): | ||
| return [ | ||
| consumer(queues=self.queues, callbacks=[self.on_message], accept=["json"]) | ||
| ] | ||
|
|
||
|
|
||
| class EventConsumer(Consumer): | ||
| def __init__(self, stop_event, connection, queues): | ||
| super().__init__(EventTask, stop_event, connection, queues) | ||
|
|
||
| def on_message(self, body, received_message): | ||
| try: | ||
| message = EventMessage(**json.loads(body)) | ||
| message_digest = hashlib.sha256(body.encode()).hexdigest() | ||
| ts = int(message.timestamp.timestamp()) | ||
| self.logger.debug(f"Message received at {ts} - digest: {message_digest}") | ||
| for task in TaskManager.tasks(): | ||
| if task.enabled is False or task.type != TaskType.event: | ||
| continue | ||
| if message.event.match(task.compiled_acts_on): | ||
| self.logger.info(f"Running task {task.name}") | ||
| task.run(message) | ||
| except Exception: | ||
| self.logger.exception( | ||
| f"[PID:{os.getpid()}] - Error processing message in events queue with {body}" | ||
| ) | ||
| received_message.ack() | ||
|
|
||
|
|
||
| class LogConsumer(Consumer): | ||
| def __init__(self, stop_event, connection, queues): | ||
| super().__init__(LogTask, stop_event, connection, queues) | ||
|
|
||
| def on_message(self, body, received_message): | ||
| try: | ||
| message = LogMessage(**json.loads(body)) | ||
| for task in TaskManager.tasks(): | ||
| if task.enabled is False or task.type != TaskType.log: | ||
| continue | ||
| task.run(message) | ||
| except Exception: | ||
| self.logger.exception(f"Error processing message in logs queue with {body}") | ||
| received_message.ack() | ||
|
|
||
|
|
||
| class Worker(multiprocessing.Process): | ||
| def __init__(self, queue, *args, **kwargs): | ||
| super().__init__(*args, **kwargs) | ||
| self.stop_event = multiprocessing.Event() | ||
| exchange = Exchange(queue, type="direct") | ||
| queues = [Queue(queue, exchange, routing_key=queue)] | ||
| broker = f"redis://{yeti_config.get('redis', 'host')}/" | ||
| self._connection = Connection(broker, heartbeat=4) | ||
| self._connection.connect() | ||
| self._worker = EventConsumer(self.stop_event, self._connection, queues) | ||
|
|
||
| def run(self): | ||
| logger.info(f"Worker {self.name} started") | ||
| while not self.stop_event.is_set(): | ||
| try: | ||
| self._worker.run() | ||
| except Exception: | ||
| logger.exception("Consumer failed, restarting") | ||
| except KeyboardInterrupt: | ||
| logger.info(f"Worker {self.name} exiting...") | ||
| self._connection.release() | ||
| return | ||
|
|
||
|
|
||
| if __name__ == "__main__": | ||
| parser = argparse.ArgumentParser( | ||
| prog="yeti-consumer", description="Consume events and logs from the event bus" | ||
| ) | ||
| parser.add_argument( | ||
| "--concurrency", type=int, default=None, help="Number of consumers to start" | ||
| ) | ||
| parser.add_argument( | ||
| "type", choices=["events", "logs"], help="Type of consumer to start" | ||
| ) | ||
| parser.add_argument("--debug", action="store_true", help="Enable debug logging") | ||
| args = parser.parse_args() | ||
| logger.setLevel(logging.DEBUG if args.debug else logging.INFO) | ||
| if not args.concurrency: | ||
| concurrency = multiprocessing.cpu_count() | ||
| else: | ||
| concurrency = args.concurrency | ||
| logger.info(f"Starting {concurrency} {args.type} workers") | ||
| processes = [] | ||
| stop_event = multiprocessing.Event() | ||
| for i in range(concurrency): | ||
| name = f"{args.type}-worker-{i+1}" | ||
| p = Worker(queue=args.type, name=name) | ||
| p.start() | ||
| logger.info(f"Starting {p.name} pid={p.pid}") | ||
| processes.append(p) | ||
| try: | ||
| for p in processes: | ||
| p.join() | ||
| except KeyboardInterrupt: | ||
| logger.info("Shutdown requested, exiting gracefully...") | ||
| try: | ||
| logger.info(f"Terminating worker {p.name} pid={p.pid}") | ||
| for p in processes: | ||
| p.stop_event.set() | ||
| p.join() | ||
| logger.info(f"Worker {p.name} pid={p.pid} exited") | ||
| except KeyboardInterrupt: | ||
| logger.info("Forcefully killing remaining workers") | ||
| for p in processes: | ||
| p.kill() | ||
| logger.info(f"Worker {p.name} pid={p.pid} killed") |
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