419 lines
15 KiB
Python
419 lines
15 KiB
Python
import logging
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import rq
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from redis import Redis
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from rq import Worker, Queue
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from rq.command import send_kill_horse_command
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from rq.job import Job
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import os
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import signal
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import psutil
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import re
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import pathlib
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from params import ydl_api_hooks
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class ProcessUtils:
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def __init__(self, config_manager):
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self.__cm = config_manager
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if self.__cm.get_app_params().get('_enable_redis') is not None and self.__cm.get_app_params().get('_enable_redis') is True:
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self.redis = Redis(host=self.__cm.get_app_params().get('_redis_host'), port=self.__cm.get_app_params().get('_redis_port'))
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self.queue = Queue('ydl_api_ng', connection=self.redis)
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self.registries = {'pending_job': self.queue,
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'started_job': self.queue.started_job_registry,
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'finished_job': self.queue.finished_job_registry,
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'failed_job': self.queue.failed_job_registry,
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'deferred_job': self.queue.deferred_job_registry,
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'scheduled_job': self.queue.scheduled_job_registry,
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'canceled_job': self.queue.canceled_job_registry,
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}
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else:
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self.redis = None
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self.queue = None
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self.registries = None
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def terminate_active_download(self, id):
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if self.redis is None:
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return self.terminate_basic_active_download(id)
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else:
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return self.terminate_redis_active_download(id)
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def terminate_basic_active_download(self, pid):
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child = self.get_child_object(int(pid))
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if child is not None:
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logging.getLogger('process_utils').info(f'PID {pid} will be terminated')
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child.terminate()
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filename_info = self.get_current_download_file_destination(child.cmdline())
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os.rename(filename_info.get('part_filename'), filename_info.get('filename')) # renaming file to remove the .part
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if callable(getattr(ydl_api_hooks, 'post_termination_handler', None)):
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ydl_api_hooks.post_termination_handler(self.__cm, filename_info)
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return filename_info
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else:
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logging.getLogger('process_utils').error(f'PID {pid} does not exist or does not belong to the application')
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return None
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def find_ffmpeg_filename_info(self, job):
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child_process = psutil.Process(job.get('worker').pid).children(recursive=True)
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for process in child_process:
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if process.name() == "ffmpeg":
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info = self.get_current_download_file_destination(process.cmdline())
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return process.pid, info
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return None, None
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def find_ffmpeg_filename_info_by_pid(self, pid):
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child_process = psutil.Process(pid).children(recursive=True)
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for process in child_process:
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if process.name() == "ffmpeg":
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info = self.get_current_download_file_destination(process.cmdline())
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return process.pid, info
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return None, None
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def terminate_redis_active_download(self, search_job_id):
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job = self.find_in_running(search_job_id)
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if job is not None:
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ffmpeg_killed = False
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process_pid, filename_info = self.find_ffmpeg_filename_info(job)
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job_object = {
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'id': job.get('id'),
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'preset': job.get('preset'),
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'download_manager': job.get('download_manager'),
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'worker': job.get('worker'),
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'job': job.get('job'),
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}
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if filename_info is not None:
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ffmpeg_killed = True
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os.kill(process_pid, signal.SIGINT)
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try:
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os.rename(filename_info.get('part_filename'), filename_info.get('filename')) # renaming file to remove the .part
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job.get('job').meta['filename_info'] = filename_info
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job.get('job').save()
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job.get('job').refresh()
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if callable(getattr(ydl_api_hooks, 'post_redis_termination_handler', None)):
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ydl_api_hooks.post_redis_termination_handler(job_object.get('download_manager'), filename_info)
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except FileNotFoundError:
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pass
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logging.getLogger('process_utils').info(f'ffmpeg process killed : {process_pid}')
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if not ffmpeg_killed:
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send_kill_horse_command(self.redis, job.get('worker').name)
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if callable(getattr(ydl_api_hooks, 'post_redis_termination_handler', None)):
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ydl_api_hooks.post_redis_termination_handler(job_object.get('download_manager'), None)
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logging.getLogger('process_utils').info(f"Job stopped on worker {job.get('worker').name}")
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ydl_api_hooks.post_download_handler(job.get('preset'), job.get('download_manager'), job.get('download_manager').get_current_config_manager(), job.get('job').meta.get('downloaded_files'))
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return self.sanitize_job(job_object)
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else:
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job = self.find_job_by_id(search_job_id)
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if job is None:
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return None
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try:
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job.get('job').cancel()
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except rq.exceptions.InvalidJobOperation:
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job.get('job').delete()
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return self.sanitize_job(job)
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def terminate_all_active_downloads(self):
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if self.redis is None:
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return self.terminate_all_basic_active_downloads()
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else:
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return self.terminate_all_redis_active_downloads()
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def terminate_all_basic_active_downloads(self):
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logging.getLogger('process_utils').info('All active downloads are being terminated')
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informations = []
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for download in self.get_active_downloads_list():
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pid = download.get('pid')
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informations.append(self.terminate_active_download(pid))
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return informations
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def terminate_all_redis_active_downloads(self):
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stopped = []
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for worker in self.get_workers_info():
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if worker.get('job') is not None:
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job = worker.get('job').get('job')
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stopped.append(self.terminate_redis_active_download(job.id))
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return stopped
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def get_active_downloads_list(self):
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if self.redis is None:
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return self.get_basic_active_downloads_list()
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else:
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return self.get_redis_active_downloads_list()
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def get_basic_active_downloads_list(self):
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children_process = psutil.Process().children(recursive=True)
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active_downloads_list = []
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for child in children_process:
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active_download = {
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'command_line': f'{child.cmdline()}',
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'filename': self.get_current_download_file_destination(child.cmdline()),
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'pid': child.pid,
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'create_time': child.create_time()
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}
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active_downloads_list.append(active_download)
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return active_downloads_list
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def sanitize_registry(self, registry):
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sanitized = []
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jobs = self.get_jobs_from_registry(registry)
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for job in jobs:
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sanitized_job = self.sanitize_job(job)
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sanitized.append(sanitized_job)
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return sanitized
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def sanitize_job(self, job):
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return {
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'id': job.get('id'),
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'preset': self.__cm.sanitize_config_object_section(job.get('preset')).get_all(),
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'download_manager': job.get('download_manager').get_api_return_object(),
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'job': self.sanitize_job_object(job.get('job')),
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}
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def sanitize_job_object(self, job):
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if job is None:
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return None
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sanitize_object = {
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'status': job.get_status(refresh=True),
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'result': job.result,
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'enqueued_at': job.enqueued_at,
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'started_at': job.started_at,
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'ended_at': job.ended_at,
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'exc_info': job.exc_info,
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'last_heartbeat': job.last_heartbeat,
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'worker_name': job.worker_name,
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'meta': job.meta
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}
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return sanitize_object
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def sanitize_workers_list(self, workers):
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sanitized_workers = []
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for worker in workers:
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sanitizer_worker = {
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'name': worker.get('name'),
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'hostname': worker.get('hostname'),
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'pid': worker.get('pid'),
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'state': worker.get('state'),
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'last_heartbeat': worker.get('last_heartbeat'),
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'birth_date': worker.get('birth_date'),
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'successful_job_count': worker.get('successful_job_count'),
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'failed_job_count': worker.get('failed_job_count'),
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'total_working_time': worker.get('total_working_time'),
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'job': None,
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}
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current_job = worker.get('current_job')
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if current_job is not None:
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sanitizer_worker['job'] = self.sanitize_job({
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'id': current_job.id,
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'preset': current_job.args[0],
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'download_manager': current_job.args[1],
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'job': current_job
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})
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sanitized_workers.append(sanitizer_worker)
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return sanitized_workers
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def get_redis_active_downloads_list(self):
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return {
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'started_job': self.sanitize_registry('started_job'),
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'pending_job': self.sanitize_registry('pending_job')
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}
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def is_a_child_process(self, pid):
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children_process = psutil.Process().children(recursive=True)
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is_child = False
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for child in children_process:
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if child.pid == pid:
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is_child = True
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return is_child
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def get_child_object(self, pid):
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children_process = psutil.Process().children(recursive=True)
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for child in children_process:
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if child.pid == pid:
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return child
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return None
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def get_jobs_from_registry(self, registry):
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jobs = []
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for job_id in self.registries.get(registry).get_job_ids():
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job = Job.fetch(job_id, connection=self.redis)
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jobs.append({
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'id': job.id,
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'registry': registry,
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'preset': job.args[0],
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'download_manager': job.args[1],
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'job': job
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})
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return jobs
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def clear_registry(self, registry):
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cleared_jobs_ids = []
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for job_id in self.registries.get(registry).get_job_ids():
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job = Job.fetch(job_id, connection=self.redis)
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cleared_jobs_ids.append(job.id)
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try:
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job.cancel()
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except rq.exceptions.InvalidJobOperation:
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pass
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job.delete()
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return cleared_jobs_ids
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def clear_all_but_pending_and_started(self):
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self.clear_registry('finished_job')
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self.clear_registry('failed_job')
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self.clear_registry('deferred_job')
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self.clear_registry('scheduled_job')
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self.clear_registry('canceled_job')
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def get_all_jobs(self):
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jobs = {}
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for registry in self.registries:
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jobs[registry] = self.get_jobs_from_registry(registry)
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return jobs
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def get_workers_info(self):
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workers = []
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for worker in Worker.all(self.redis):
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worker_object = {
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'name': worker.name,
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'hostname': worker.hostname,
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'pid': worker.pid,
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'queues': worker.queues,
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'state': worker.state,
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'current_job': worker.get_current_job(),
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'last_heartbeat': worker.last_heartbeat,
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'birth_date': worker.birth_date,
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'successful_job_count': worker.successful_job_count,
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'failed_job_count': worker.failed_job_count,
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'total_working_time': worker.total_working_time,
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'worker': worker
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}
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current_job = worker_object.get('current_job')
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if current_job is not None:
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worker_object['job'] = {
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'id': current_job.id,
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'preset': current_job.args[0],
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'download_manager': current_job.args[1],
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'job': current_job
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}
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pid, current_job.meta['filename_info'] = self.find_ffmpeg_filename_info_by_pid(worker.pid)
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workers.append(worker_object)
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return workers
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def find_job_by_id(self, searched_job_id):
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for registry in self.registries:
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for job_id in self.registries.get(registry).get_job_ids():
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if job_id == searched_job_id:
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job = Job.fetch(job_id, connection=self.redis)
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return {
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'id': job.id,
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'registry': registry,
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'preset': job.args[0],
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'download_manager': job.args[1],
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'job': job
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}
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return None
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def find_in_running(self, search_job_id):
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for worker in Worker.all(self.redis):
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current_job = worker.get_current_job()
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if current_job is not None and current_job.id == search_job_id:
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return {
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'id': current_job.id,
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'preset': current_job.args[0],
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'download_manager': current_job.args[1],
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'worker': worker,
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'job': current_job
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}
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return None
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def get_current_download_file_destination(self, cmdline):
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regex = r'\'file:(.*\/)(.*)\''
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match = re.search(regex, f'{cmdline}')
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part_filename = f'{match.group(1)}{match.group(2)}'
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filename = part_filename.rstrip('.part')
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path = match.group(1)
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filename_stem = pathlib.Path(filename).stem
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extension = pathlib.Path(filename).suffix
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return {
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'part_filename': part_filename,
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'filename': filename,
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'path': path,
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'filename_stem': filename_stem,
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'extension': extension,
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'full_filename': f'{filename_stem}{extension}',
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'file_size': os.path.getsize(part_filename)
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}
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def get_queue_content(self, registry):
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sanitized_jobs = {}
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if registry == 'all':
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registries = self.get_all_jobs()
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elif registry == 'workers':
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registries = self.sanitize_workers_list(self.get_workers_info())
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return registries
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elif self.registries.get(registry) is None:
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return None
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else:
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registries = {registry: self.get_jobs_from_registry(registry)}
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for r in registries:
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sanitized_jobs[r] = self.sanitize_registry(r)
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return sanitized_jobs
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