Event socket
This commit adds a unix socket on which you can receive internal events as they happen. Currently the only supported event is a chat message being added. Intended for external applications that depend on chat messages, e.g. text-to-speech or Twitch Plays Pokémon.
このコミットが含まれているのは:
コミット
65d28a6937
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@ -51,6 +51,9 @@ def create_app(config_file):
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# Background tasks' asyncio.sleep tasks, cancelled on shutdown
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app.background_sleep = set()
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# Queues for event socket clients
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app.event_queues = set()
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@app.after_serving
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async def shutdown():
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# Force all background tasks to finish
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@ -60,10 +63,23 @@ def create_app(config_file):
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@app.before_serving
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async def startup():
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# Start control server
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from anonstream.control.server import start_control_server_at
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async def start_control_server():
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return await start_control_server_at(app.config['CONTROL_ADDRESS'])
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app.add_background_task(start_control_server)
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if app.config['SOCKET_CONTROL_ENABLED']:
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from anonstream.control.server import start_control_server_at
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async def start_control_server():
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return await start_control_server_at(
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app.config['SOCKET_CONTROL_ADDRESS']
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)
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app.add_background_task(start_control_server)
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# Start event server
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if app.config['SOCKET_EVENT_ENABLED']:
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from anonstream.events import start_event_server_at
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async def start_event_server():
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return await start_event_server_at(
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app.config['SOCKET_EVENT_ADDRESS']
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)
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app.add_background_task(start_event_server)
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# Create routes and background tasks
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import anonstream.routes
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@ -7,6 +7,7 @@ from datetime import datetime
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from quart import current_app, escape
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from anonstream.broadcast import broadcast, broadcast_users_update
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from anonstream.events import notify_event_sockets
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from anonstream.helpers.chat import generate_nonce_hash, get_scrollback
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from anonstream.utils.chat import get_message_for_websocket, get_approx_linespan
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@ -102,6 +103,12 @@ def add_chat_message(user, nonce, comment, ignore_empty=False):
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while len(MESSAGES_BY_ID) > CONFIG['MAX_CHAT_MESSAGES']:
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MESSAGES_BY_ID.pop(last=False)
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# Notify event sockets that a chat message was added
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notify_event_sockets({
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'type': 'message',
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'event': message,
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})
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# Broadcast a users update to all websockets,
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# in case this message is from a new user
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broadcast_users_update()
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@ -13,7 +13,6 @@ def update_flask_from_toml(toml_config, flask_config):
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flask_config.update({
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'SECRET_KEY_STRING': toml_config['secret_key'],
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'SECRET_KEY': toml_config['secret_key'].encode(),
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'CONTROL_ADDRESS': toml_config['control']['address'],
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'AUTH_USERNAME': toml_config['auth']['username'],
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'AUTH_PWHASH': auth_pwhash,
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'AUTH_TOKEN': generate_token(),
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@ -25,6 +24,7 @@ def update_flask_from_toml(toml_config, flask_config):
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def toml_to_flask_sections(config):
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TOML_TO_FLASK_SECTIONS = (
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toml_to_flask_section_socket,
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toml_to_flask_section_segments,
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toml_to_flask_section_title,
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toml_to_flask_section_names,
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@ -38,6 +38,15 @@ def toml_to_flask_sections(config):
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for toml_to_flask_section in TOML_TO_FLASK_SECTIONS:
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yield toml_to_flask_section(config)
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def toml_to_flask_section_socket(config):
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cfg = config['socket']
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return {
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'SOCKET_CONTROL_ENABLED': cfg['control']['enabled'],
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'SOCKET_CONTROL_ADDRESS': cfg['control']['address'],
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'SOCKET_EVENT_ENABLED': cfg['event']['enabled'],
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'SOCKET_EVENT_ADDRESS': cfg['event']['address'],
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}
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def toml_to_flask_section_segments(config):
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cfg = config['segments']
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return {
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@ -0,0 +1,30 @@
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import asyncio
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import json
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from quart import current_app
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async def start_event_server_at(address):
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return await asyncio.start_unix_server(serve_event_client, address)
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async def serve_event_client(reader, writer):
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reader.feed_eof()
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queue = asyncio.Queue()
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current_app.event_queues.add(queue)
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try:
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while True:
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event = await queue.get()
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event_json = json.dumps(event, separators=(',', ':'))
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writer.write(event_json.encode())
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writer.write(b'\n')
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try:
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await writer.drain()
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# Because we used reader.feed_eof(), if the client sends anything
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# an AsserionError will be raised
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except (ConnectionError, AssertionError):
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break
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finally:
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current_app.event_queues.remove(queue)
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def notify_event_sockets(event):
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for queue in current_app.event_queues:
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queue.put_nowait(event)
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@ -9,7 +9,7 @@ CONFIG = current_app.config
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def generate_nonce_hash(nonce):
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parts = CONFIG['SECRET_KEY'] + b'nonce-hash\0' + nonce.encode()
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return hashlib.sha256(parts).digest()
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return hashlib.sha256(parts).hexdigest()
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def get_scrollback(messages):
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n = CONFIG['MAX_CHAT_SCROLLBACK']
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@ -1,8 +1,13 @@
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secret_key = "place secret key here"
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[control]
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[socket.control]
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enabled = true
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address = "control.sock"
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[socket.event]
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enabled = true
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address = "event.sock"
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[auth]
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username = "broadcaster"
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