forked from Mirrors/Dispatcharr
335 lines
15 KiB
Python
335 lines
15 KiB
Python
import json
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import threading
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import time
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import random
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import re
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from django.http import StreamingHttpResponse, JsonResponse, HttpResponseRedirect
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from django.views.decorators.csrf import csrf_exempt
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from django.shortcuts import get_object_or_404
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from apps.proxy.config import TSConfig as Config
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from . import proxy_server
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from .channel_status import ChannelStatus
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from .stream_generator import create_stream_generator
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from .utils import get_client_ip
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from .redis_keys import RedisKeys
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import logging
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from apps.channels.models import Channel, Stream
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from apps.m3u.models import M3UAccount, M3UAccountProfile
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from core.models import UserAgent, CoreSettings, PROXY_PROFILE_NAME
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from rest_framework.decorators import api_view, permission_classes
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from rest_framework.permissions import IsAuthenticated
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from .constants import ChannelState, EventType, StreamType
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from .config_helper import ConfigHelper
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from .services.channel_service import ChannelService
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# Configure logging properly
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logger = logging.getLogger("ts_proxy")
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@api_view(['GET'])
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def stream_ts(request, channel_id):
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"""Stream TS data to client with immediate response and keep-alive packets during initialization"""
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client_user_agent = None
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logger.info(f"Fetching channel ID {channel_id}")
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channel = get_object_or_404(Channel, uuid=channel_id)
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try:
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# Generate a unique client ID
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client_id = f"client_{int(time.time() * 1000)}_{random.randint(1000, 9999)}"
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client_ip = get_client_ip(request)
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logger.info(f"[{client_id}] Requested stream for channel {channel_id}")
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# Extract client user agent early
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for header in ['HTTP_USER_AGENT', 'User-Agent', 'user-agent']:
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if header in request.META:
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client_user_agent = request.META[header]
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logger.debug(f"[{client_id}] Client connected with user agent: {client_user_agent}")
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break
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# Start initialization if needed
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channel_initializing = False
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if not proxy_server.check_if_channel_exists(channel_id):
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# Initialize the channel (but don't wait for completion)
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logger.info(f"[{client_id}] Starting channel {channel_id} initialization")
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# Get stream details from channel model
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stream_id, profile_id = channel.get_stream()
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if stream_id is None or profile_id is None:
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return JsonResponse({'error': 'Channel not available'}, status=404)
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# Load in necessary objects for the stream
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logger.info(f"Fetching stream ID {stream_id}")
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stream = get_object_or_404(Stream, pk=stream_id)
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logger.info(f"Fetching profile ID {profile_id}")
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profile = get_object_or_404(M3UAccountProfile, pk=profile_id)
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# Load in the user-agent for the STREAM connection (not client)
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m3u_account = M3UAccount.objects.get(id=profile.m3u_account.id)
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stream_user_agent = UserAgent.objects.get(id=m3u_account.user_agent.id).user_agent
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if stream_user_agent is None:
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stream_user_agent = UserAgent.objects.get(id=CoreSettings.get_default_user_agent_id())
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logger.debug(f"No user agent found for account, using default: {stream_user_agent}")
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else:
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logger.debug(f"User agent found for account: {stream_user_agent}")
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# Generate stream URL based on the selected profile
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input_url = stream.url
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logger.debug("Executing the following pattern replacement:")
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logger.debug(f" search: {profile.search_pattern}")
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safe_replace_pattern = re.sub(r'\$(\d+)', r'\\\1', profile.replace_pattern)
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logger.debug(f" replace: {profile.replace_pattern}")
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logger.debug(f" safe replace: {safe_replace_pattern}")
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stream_url = re.sub(profile.search_pattern, safe_replace_pattern, input_url)
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logger.debug(f"Generated stream url: {stream_url}")
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# Generate transcode command if needed
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stream_profile = channel.get_stream_profile()
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if stream_profile.is_redirect():
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return HttpResponseRedirect(stream_url)
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# Need to check if profile is transcoded
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logger.debug(f"Using profile {stream_profile} for stream {stream_id}")
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if stream_profile.is_proxy() or stream_profile is None:
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transcode = False
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else:
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transcode = True
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# Initialize channel using the service
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profile_value = stream_profile.id
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success = ChannelService.initialize_channel(
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channel_id, stream_url, stream_user_agent, transcode, profile_value
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)
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if not success:
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return JsonResponse({'error': 'Failed to initialize channel'}, status=500)
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# If we're the owner, wait for connection to establish
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if proxy_server.am_i_owner(channel_id):
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manager = proxy_server.stream_managers.get(channel_id)
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if manager:
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wait_start = time.time()
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timeout = ConfigHelper.connection_timeout()
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while not manager.connected:
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if time.time() - wait_start > timeout:
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proxy_server.stop_channel(channel_id)
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return JsonResponse({'error': 'Connection timeout'}, status=504)
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if not manager.should_retry():
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proxy_server.stop_channel(channel_id)
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return JsonResponse({'error': 'Failed to connect'}, status=502)
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time.sleep(0.1)
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logger.info(f"[{client_id}] Successfully initialized channel {channel_id}")
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channel_initializing = True
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logger.info(f"[{client_id}] Channel {channel_id} initialization started")
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# Register client - can do this regardless of initialization state
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# Create local resources if needed
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if channel_id not in proxy_server.stream_buffers or channel_id not in proxy_server.client_managers:
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logger.debug(f"[{client_id}] Channel {channel_id} exists in Redis but not initialized in this worker - initializing now")
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# Get URL from Redis metadata
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url = None
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stream_user_agent = None # Initialize the variable
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if proxy_server.redis_client:
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metadata_key = RedisKeys.channel_metadata(channel_id)
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url_bytes = proxy_server.redis_client.hget(metadata_key, "url")
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ua_bytes = proxy_server.redis_client.hget(metadata_key, "user_agent")
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profile_bytes = proxy_server.redis_client.hget(metadata_key, "profile")
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if url_bytes:
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url = url_bytes.decode('utf-8')
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if ua_bytes:
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stream_user_agent = ua_bytes.decode('utf-8')
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# Extract transcode setting from Redis
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if profile_bytes:
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profile_str = profile_bytes.decode('utf-8')
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use_transcode = (profile_str == PROXY_PROFILE_NAME or profile_str == 'None')
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logger.debug(f"Using profile '{profile_str}' for channel {channel_id}, transcode={use_transcode}")
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else:
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# Default settings when profile not found in Redis
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profile_str = 'None' # Default profile name
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use_transcode = False # Default to direct streaming without transcoding
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logger.debug(f"No profile found in Redis for channel {channel_id}, defaulting to transcode={use_transcode}")
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# Use client_user_agent as fallback if stream_user_agent is None
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success = proxy_server.initialize_channel(url, channel_id, stream_user_agent or client_user_agent, use_transcode)
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if not success:
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logger.error(f"[{client_id}] Failed to initialize channel {channel_id} locally")
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return JsonResponse({'error': 'Failed to initialize channel locally'}, status=500)
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logger.info(f"[{client_id}] Successfully initialized channel {channel_id} locally")
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# Register client
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buffer = proxy_server.stream_buffers[channel_id]
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client_manager = proxy_server.client_managers[channel_id]
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client_manager.add_client(client_id, client_ip, client_user_agent)
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logger.info(f"[{client_id}] Client registered with channel {channel_id}")
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# Create a stream generator for this client
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generate = create_stream_generator(
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channel_id, client_id, client_ip, client_user_agent, channel_initializing
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)
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# Return the StreamingHttpResponse from the main function
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response = StreamingHttpResponse(
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streaming_content=generate(),
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content_type='video/mp2t'
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)
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response['Cache-Control'] = 'no-cache'
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return response
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except Exception as e:
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logger.error(f"Error in stream_ts: {e}", exc_info=True)
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return JsonResponse({'error': str(e)}, status=500)
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@csrf_exempt
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@api_view(['POST'])
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@permission_classes([IsAuthenticated])
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def change_stream(request, channel_id):
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"""Change stream URL for existing channel with enhanced diagnostics"""
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try:
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data = json.loads(request.body)
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new_url = data.get('url')
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user_agent = data.get('user_agent')
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if not new_url:
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return JsonResponse({'error': 'No URL provided'}, status=400)
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logger.info(f"Attempting to change stream URL for channel {channel_id} to {new_url}")
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# Use the service layer instead of direct implementation
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result = ChannelService.change_stream_url(channel_id, new_url, user_agent)
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if result.get('status') == 'error':
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return JsonResponse({
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'error': result.get('message', 'Unknown error'),
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'diagnostics': result.get('diagnostics', {})
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}, status=404)
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# Format response based on whether it was a direct update or event-based
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if result.get('direct_update'):
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return JsonResponse({
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'message': 'Stream URL updated',
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'channel': channel_id,
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'url': new_url,
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'owner': True,
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'worker_id': proxy_server.worker_id
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})
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else:
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return JsonResponse({
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'message': 'Stream URL change requested',
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'channel': channel_id,
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'url': new_url,
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'owner': False,
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'worker_id': proxy_server.worker_id
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})
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except json.JSONDecodeError:
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return JsonResponse({'error': 'Invalid JSON'}, status=400)
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except Exception as e:
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logger.error(f"Failed to change stream: {e}", exc_info=True)
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return JsonResponse({'error': str(e)}, status=500)
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@api_view(['GET'])
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@permission_classes([IsAuthenticated])
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def channel_status(request, channel_id=None):
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"""
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Returns status information about channels with detail level based on request:
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- /status/ returns basic summary of all channels
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- /status/{channel_id} returns detailed info about specific channel
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"""
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try:
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# Check if Redis is available
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if not proxy_server.redis_client:
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return JsonResponse({'error': 'Redis connection not available'}, status=500)
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# Handle single channel or all channels
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if channel_id:
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# Detailed info for specific channel
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channel_info = ChannelStatus.get_detailed_channel_info(channel_id)
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if channel_info:
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return JsonResponse(channel_info)
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else:
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return JsonResponse({'error': f'Channel {channel_id} not found'}, status=404)
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else:
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# Basic info for all channels
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channel_pattern = "ts_proxy:channel:*:metadata"
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all_channels = []
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# Extract channel IDs from keys
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cursor = 0
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while True:
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cursor, keys = proxy_server.redis_client.scan(cursor, match=channel_pattern)
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for key in keys:
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channel_id_match = re.search(r"ts_proxy:channel:(.*):metadata", key.decode('utf-8'))
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if channel_id_match:
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ch_id = channel_id_match.group(1)
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channel_info = ChannelStatus.get_basic_channel_info(ch_id)
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if channel_info:
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all_channels.append(channel_info)
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if cursor == 0:
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break
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return JsonResponse({'channels': all_channels, 'count': len(all_channels)})
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except Exception as e:
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logger.error(f"Error in channel_status: {e}", exc_info=True)
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return JsonResponse({'error': str(e)}, status=500)
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@csrf_exempt
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@api_view(['POST', 'DELETE'])
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@permission_classes([IsAuthenticated])
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def stop_channel(request, channel_id):
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"""Stop a channel and release all associated resources using PubSub events"""
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try:
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logger.info(f"Request to stop channel {channel_id} received")
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# Use the service layer instead of direct implementation
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result = ChannelService.stop_channel(channel_id)
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if result.get('status') == 'error':
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return JsonResponse({'error': result.get('message', 'Unknown error')}, status=404)
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return JsonResponse({
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'message': 'Channel stop request sent',
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'channel_id': channel_id,
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'previous_state': result.get('previous_state')
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})
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except Exception as e:
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logger.error(f"Failed to stop channel: {e}", exc_info=True)
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return JsonResponse({'error': str(e)}, status=500)
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@csrf_exempt
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@api_view(['POST'])
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@permission_classes([IsAuthenticated])
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def stop_client(request, channel_id):
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"""Stop a specific client connection using existing client management"""
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try:
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# Parse request body to get client ID
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data = json.loads(request.body)
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client_id = data.get('client_id')
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if not client_id:
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return JsonResponse({'error': 'No client_id provided'}, status=400)
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# Use the service layer instead of direct implementation
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result = ChannelService.stop_client(channel_id, client_id)
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if result.get('status') == 'error':
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return JsonResponse({'error': result.get('message')}, status=404)
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return JsonResponse({
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'message': 'Client stop request processed',
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'channel_id': channel_id,
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'client_id': client_id,
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'locally_processed': result.get('locally_processed', False)
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})
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except json.JSONDecodeError:
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return JsonResponse({'error': 'Invalid JSON'}, status=400)
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except Exception as e:
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logger.error(f"Failed to stop client: {e}", exc_info=True)
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return JsonResponse({'error': str(e)}, status=500)
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