186 lines
11 KiB
Python
186 lines
11 KiB
Python
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# -*- coding: utf-8 -*-
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from queue import Queue
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from threading import Thread
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from time import time, sleep
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from traceback import format_exc
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from loguru import logger
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from enums.ExceptionEnum import ExceptionType
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from enums.RecordingStatusEnum import RecordingStatus
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from exception.CustomerException import ServiceException
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from util.Cv2Utils import check_video_stream, clear_pull_p, build_video_info2, pull_read_video_stream2
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from util.QueUtil import put_queue, get_no_block_queue, clear_queue, put_queue_result
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class PullStreamThread(Thread):
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__slots__ = ('_command', '_pull_queue', '_hb_queue', '_fb_queue', '_msg', '_context')
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def __init__(self, *args):
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super().__init__()
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self._msg, self._context, self._pull_queue, self._hb_queue, self._fb_queue, self._frame_num = args
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self._command = Queue()
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def sendEvent(self, result):
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put_queue(self._command, result, timeout=10, is_ex=False)
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class RecordingPullStreamThread(PullStreamThread):
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def run(self):
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msg, context, frame_num = self._msg, self._context, self._frame_num
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request_id, pull_url = msg["request_id"], msg['pull_url']
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service = context["service"]
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pull_stream_timeout = int(service["recording_pull_stream_timeout"])
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read_stream_timeout = int(service["cv2_read_stream_timeout"])
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service_timeout = int(service["timeout"])
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command_queue, pull_queue, fb_queue, hb_queue = self._command, self._pull_queue, self._fb_queue, self._hb_queue
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width, height, width_height_3, all_frames, w, h = None, None, None, 0, None, None
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read_start_time, pull_p, ex = None, None, None
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frame_list, frame_index_list = [], []
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stop_ex = True
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pull_stream_start_time = time()
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try:
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logger.info("录屏拉流线程开始启动, requestId: {}", request_id)
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cv2_init_num, init_pull_num, concurrent_frame = 0, 1, 1
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start_time = time()
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while True:
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# 检查任务是否超时
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if time() - start_time > service_timeout:
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logger.error("录屏拉流超时, requestId: {}", request_id)
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raise ServiceException(ExceptionType.TASK_EXCUTE_TIMEOUT.value[0],
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ExceptionType.TASK_EXCUTE_TIMEOUT.value[1])
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# 最终停止拉流
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event = get_no_block_queue(command_queue)
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if event is not None:
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# 当接收到停止指令，说明不会再处理视频帧了, 直接退出
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if 'stop' == event.get("command"):
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if len(frame_list) > 0:
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put_queue(pull_queue, (4, (frame_list, frame_index_list, all_frames)), timeout=1)
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logger.info("录屏拉流线程开始停止, requestId: {}", request_id)
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break
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# 主进程异常，停止子线程
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if 'stop_ex' == event.get("command"):
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logger.info("录屏异常拉开始停止拉流线程, requestId: {}", request_id)
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stop_ex = False
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break
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# 如果是离线拉流
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if pull_url.startswith('http'):
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if check_video_stream(width, height):
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logger.info("开始重新获取视频信息: {}次, requestId: {}", cv2_init_num, request_id)
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# 当是离线地址重试3次还是拉取不到视频流，关闭拉流管道，返回失败信息
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# 目前改为等待5分钟
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# if cv2_init_num > 3:
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if time() - start_time > 300:
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logger.info("离线拉流重试失败, 重试次数: {}, requestId: {}", cv2_init_num, request_id)
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raise ServiceException(ExceptionType.OR_VIDEO_ADDRESS_EXCEPTION.value[0],
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ExceptionType.OR_VIDEO_ADDRESS_EXCEPTION.value[1])
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cv2_init_num += 1
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width, height, width_height_3, all_frames, w, h = build_video_info2(pull_url, request_id)
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if width is not None:
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put_queue(hb_queue, {"status": RecordingStatus.RECORDING_RUNNING.value[0]}, timeout=2)
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else:
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# if cv2_init_num < 2:
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if time() - start_time < 300:
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put_queue(hb_queue, {"status": RecordingStatus.RECORDING_RETRYING.value[0]}, timeout=2)
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continue
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# 当离线视频时, 队列满了, 等待1秒后再试
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if pull_queue.full():
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logger.info("pull拉流队列满了: {}, requestId: {}", pull_queue.qsize(), request_id)
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sleep(1)
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continue
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# 如果是实时拉流
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else:
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if check_video_stream(width, height):
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logger.info("开始重新获取视频信息: {}次, requestId: {}", cv2_init_num, request_id)
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pull_stream_init_timeout = time() - pull_stream_start_time
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if len(frame_list) > 0:
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put_queue(pull_queue, (4, (frame_list, frame_index_list, all_frames)), timeout=1)
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frame_list, frame_index_list = [], []
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if pull_stream_init_timeout > pull_stream_timeout:
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logger.error("开始拉流超时, 超时时间：{}, requestId:{}", pull_stream_init_timeout, request_id)
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raise ServiceException(ExceptionType.PULLSTREAM_TIMEOUT_EXCEPTION.value[0],
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ExceptionType.PULLSTREAM_TIMEOUT_EXCEPTION.value[1])
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cv2_init_num += 1
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width, height, width_height_3, all_frames, w, h = build_video_info2(pull_url, request_id)
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if width is not None:
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put_queue(hb_queue, {"status": RecordingStatus.RECORDING_RUNNING.value[0]}, timeout=1)
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else:
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if cv2_init_num < 3:
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put_queue(hb_queue, {"status": RecordingStatus.RECORDING_RETRYING.value[0]}, timeout=1)
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sleep(1)
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continue
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pull_stream_start_time = time()
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cv2_init_num = 1
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frame, pull_p, width, height = pull_read_video_stream2(pull_p, pull_url, width, height,
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width_height_3, w, h, request_id)
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if frame is None:
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if pull_url.startswith('http'):
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clear_pull_p(pull_p, request_id)
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logger.info("总帧数: {}, 当前帧数: {}, requestId: {}", all_frames, concurrent_frame, request_id)
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if len(frame_list) > 0:
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put_queue(pull_queue, (4, (frame_list, frame_index_list, all_frames)), timeout=1)
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if concurrent_frame < all_frames - 100:
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logger.info("离线拉流异常结束：requestId: {}", request_id)
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raise ServiceException(ExceptionType.READSTREAM_TIMEOUT_EXCEPTION.value[0],
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ExceptionType.READSTREAM_TIMEOUT_EXCEPTION.value[1])
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logger.info("离线拉流线程结束, requestId: {}", request_id)
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break
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else:
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logger.info("获取帧为空, 开始重试: {}次, requestId: {}", init_pull_num, request_id)
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if len(frame_list) > 0:
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put_queue(pull_queue, (4, (frame_list, frame_index_list, all_frames)), timeout=1)
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frame_list, frame_index_list = [], []
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if read_start_time is None:
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read_start_time = time()
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pull_stream_read_timeout = time() - read_start_time
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if pull_stream_read_timeout > read_stream_timeout:
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logger.info("拉流过程中断了重试超时, 超时时间: {}, requestId: {}", pull_stream_read_timeout,
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request_id)
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raise ServiceException(ExceptionType.READSTREAM_TIMEOUT_EXCEPTION.value[0],
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ExceptionType.READSTREAM_TIMEOUT_EXCEPTION.value[1])
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init_pull_num += 1
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continue
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init_pull_num = 1
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read_start_time = None
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if pull_queue.full():
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sleep(1)
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logger.info("pull拉流队列满了:{}, requestId: {}", pull_queue.qsize(), request_id)
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continue
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frame_list.append(frame)
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frame_index_list.append(concurrent_frame)
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if len(frame_list) >= frame_num:
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put_queue(pull_queue, (4, (frame_list, frame_index_list, all_frames)), timeout=1)
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frame_list, frame_index_list = [], []
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concurrent_frame += 1
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del frame
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except ServiceException as s:
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ex = s.code, s.msg
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except Exception:
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logger.exception("实时拉流异常: {}, requestId:{}", format_exc(), request_id)
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ex = ExceptionType.SERVICE_INNER_EXCEPTION.value[0], ExceptionType.SERVICE_INNER_EXCEPTION.value[1]
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finally:
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clear_pull_p(pull_p, request_id)
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if stop_ex:
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if ex:
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error_code, error_msg = ex
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result = put_queue_result(pull_queue, (1, error_code, error_msg), timeout=3)
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else:
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result = put_queue_result(pull_queue, (2,), timeout=3)
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if result:
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# 3分钟超时时间
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cr_time = time()
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while time() - cr_time < 180:
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event = get_no_block_queue(command_queue)
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if event is not None:
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# 当接收到停止指令，说明不会再处理视频帧了, 直接退出
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if 'stop' == event.get("command"):
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logger.info("录屏拉流线程开始停止, requestId: {}", request_id)
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break
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sleep(1)
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clear_queue(command_queue)
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clear_queue(pull_queue)
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clear_queue(hb_queue)
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del frame_list, frame_index_list
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logger.info("录屏拉流线程结束, requestId: {}", request_id)
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