blivechat/api/chat.py
2022-01-19 21:47:59 +08:00

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# -*- coding: utf-8 -*-
import asyncio
import enum
import json
import logging
import random
import time
import uuid
from typing import *
import aiohttp
import tornado.websocket
import api.base
import blivedm.blivedm as blivedm
import blivedm.blivedm.client as blivedm_client
import config
import models.avatar
import models.translate
logger = logging.getLogger(__name__)
class Command(enum.IntEnum):
HEARTBEAT = 0
JOIN_ROOM = 1
ADD_TEXT = 2
ADD_GIFT = 3
ADD_MEMBER = 4
ADD_SUPER_CHAT = 5
DEL_SUPER_CHAT = 6
UPDATE_TRANSLATION = 7
class ContentType(enum.IntEnum):
TEXT = 0
EMOTICON = 1
_http_session = aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=10))
room_manager: Optional['RoomManager'] = None
def init():
global room_manager
room_manager = RoomManager()
class Room(blivedm.BLiveClient, blivedm.BaseHandler):
HEARTBEAT_INTERVAL = 10
# 重新定义XXX_callback是为了减少对字段名的依赖防止B站改字段名
def __danmu_msg_callback(self, client: blivedm.BLiveClient, command: dict):
info = command['info']
if len(info[3]) != 0:
medal_level = info[3][0]
medal_room_id = info[3][3]
else:
medal_level = 0
medal_room_id = 0
message = blivedm.DanmakuMessage(
timestamp=info[0][4],
msg_type=info[0][9],
dm_type=info[0][12],
emoticon_options=info[0][13],
msg=info[1],
uid=info[2][0],
uname=info[2][1],
admin=info[2][2],
urank=info[2][5],
mobile_verify=info[2][6],
medal_level=medal_level,
medal_room_id=medal_room_id,
user_level=info[4][0],
privilege_type=info[7],
)
return self._on_danmaku(client, message)
def __send_gift_callback(self, client: blivedm.BLiveClient, command: dict):
data = command['data']
message = blivedm.GiftMessage(
gift_name=data['giftName'],
num=data['num'],
uname=data['uname'],
face=data['face'],
uid=data['uid'],
timestamp=data['timestamp'],
coin_type=data['coin_type'],
total_coin=data['total_coin'],
)
return self._on_gift(client, message)
def __guard_buy_callback(self, client: blivedm.BLiveClient, command: dict):
data = command['data']
message = blivedm.GuardBuyMessage(
uid=data['uid'],
username=data['username'],
guard_level=data['guard_level'],
start_time=data['start_time'],
)
return self._on_buy_guard(client, message)
def __super_chat_message_callback(self, client: blivedm.BLiveClient, command: dict):
data = command['data']
message = blivedm.SuperChatMessage(
price=data['price'],
message=data['message'],
start_time=data['start_time'],
id_=data['id'],
uid=data['uid'],
uname=data['user_info']['uname'],
face=data['user_info']['face'],
)
return self._on_super_chat(client, message)
_CMD_CALLBACK_DICT = {
**blivedm.BaseHandler._CMD_CALLBACK_DICT,
'DANMU_MSG': __danmu_msg_callback,
'SEND_GIFT': __send_gift_callback,
'GUARD_BUY': __guard_buy_callback,
'SUPER_CHAT_MESSAGE': __super_chat_message_callback
}
def __init__(self, room_id):
super().__init__(room_id, session=_http_session, heartbeat_interval=self.HEARTBEAT_INTERVAL)
self.add_handler(self)
self.clients: List['ChatHandler'] = []
self.auto_translate_count = 0
async def init_room(self):
await super().init_room()
return True
def send_message(self, cmd, data):
body = json.dumps({'cmd': cmd, 'data': data})
for client in self.clients:
try:
client.write_message(body)
except tornado.websocket.WebSocketClosedError:
room_manager.del_client(self.room_id, client)
def send_message_if(self, can_send_func: Callable[['ChatHandler'], bool], cmd, data):
body = json.dumps({'cmd': cmd, 'data': data})
for client in filter(can_send_func, self.clients):
try:
client.write_message(body)
except tornado.websocket.WebSocketClosedError:
room_manager.del_client(self.room_id, client)
async def _on_danmaku(self, client: blivedm.BLiveClient, message: blivedm.DanmakuMessage):
asyncio.ensure_future(self.__on_danmaku(message))
async def __on_danmaku(self, message: blivedm.DanmakuMessage):
if message.uid == self.room_owner_uid:
author_type = 3 # 主播
elif message.admin:
author_type = 2 # 房管
elif message.privilege_type != 0: # 1总督2提督3舰长
author_type = 1 # 舰队
else:
author_type = 0
if message.dm_type == 1:
content_type = ContentType.EMOTICON
content_type_params = make_emoticon_params(
message.emoticon_options_dict['url'],
)
else:
content_type = ContentType.TEXT
content_type_params = None
need_translate = self._need_translate(message.msg)
if need_translate:
translation = models.translate.get_translation_from_cache(message.msg)
if translation is None:
# 没有缓存,需要后面异步翻译后通知
translation = ''
else:
need_translate = False
else:
translation = ''
id_ = uuid.uuid4().hex
# 为了节省带宽用list而不是dict
self.send_message(Command.ADD_TEXT, make_text_message(
avatar_url=await models.avatar.get_avatar_url(message.uid),
timestamp=int(message.timestamp / 1000),
author_name=message.uname,
author_type=author_type,
content=message.msg,
privilege_type=message.privilege_type,
is_gift_danmaku=message.msg_type,
author_level=message.user_level,
is_newbie=message.urank < 10000,
is_mobile_verified=message.mobile_verify,
medal_level=0 if message.medal_room_id != self.room_id else message.medal_level,
id_=id_,
translation=translation,
content_type=content_type,
content_type_params=content_type_params,
))
if need_translate:
await self._translate_and_response(message.msg, id_)
async def _on_gift(self, client: blivedm.BLiveClient, message: blivedm.GiftMessage):
avatar_url = models.avatar.process_avatar_url(message.face)
models.avatar.update_avatar_cache(message.uid, avatar_url)
if message.coin_type != 'gold': # 丢人
return
id_ = uuid.uuid4().hex
self.send_message(Command.ADD_GIFT, {
'id': id_,
'avatarUrl': avatar_url,
'timestamp': message.timestamp,
'authorName': message.uname,
'totalCoin': message.total_coin,
'giftName': message.gift_name,
'num': message.num
})
async def _on_buy_guard(self, client: blivedm.BLiveClient, message: blivedm.GuardBuyMessage):
asyncio.ensure_future(self.__on_buy_guard(message))
async def __on_buy_guard(self, message: blivedm.GuardBuyMessage):
id_ = uuid.uuid4().hex
self.send_message(Command.ADD_MEMBER, {
'id': id_,
'avatarUrl': await models.avatar.get_avatar_url(message.uid),
'timestamp': message.start_time,
'authorName': message.username,
'privilegeType': message.guard_level
})
async def _on_super_chat(self, client: blivedm.BLiveClient, message: blivedm.SuperChatMessage):
avatar_url = models.avatar.process_avatar_url(message.face)
models.avatar.update_avatar_cache(message.uid, avatar_url)
need_translate = self._need_translate(message.message)
if need_translate:
translation = models.translate.get_translation_from_cache(message.message)
if translation is None:
# 没有缓存,需要后面异步翻译后通知
translation = ''
else:
need_translate = False
else:
translation = ''
id_ = str(message.id)
self.send_message(Command.ADD_SUPER_CHAT, {
'id': id_,
'avatarUrl': avatar_url,
'timestamp': message.start_time,
'authorName': message.uname,
'price': message.price,
'content': message.message,
'translation': translation
})
if need_translate:
asyncio.ensure_future(self._translate_and_response(message.message, id_))
async def _on_super_chat_delete(self, client: blivedm.BLiveClient, message: blivedm.SuperChatDeleteMessage):
self.send_message(Command.ADD_SUPER_CHAT, {
'ids': list(map(str, message.ids))
})
def _need_translate(self, text):
cfg = config.get_config()
return (
cfg.enable_translate
and (not cfg.allow_translate_rooms or self.room_id in cfg.allow_translate_rooms)
and self.auto_translate_count > 0
and models.translate.need_translate(text)
)
async def _translate_and_response(self, text, msg_id):
translation = await models.translate.translate(text)
if translation is None:
return
self.send_message_if(
lambda client: client.auto_translate,
Command.UPDATE_TRANSLATION, make_translation_message(
msg_id,
translation
)
)
def make_text_message(avatar_url, timestamp, author_name, author_type, content, privilege_type,
is_gift_danmaku, author_level, is_newbie, is_mobile_verified, medal_level,
id_, translation, content_type, content_type_params):
return [
# 0: avatarUrl
avatar_url,
# 1: timestamp
timestamp,
# 2: authorName
author_name,
# 3: authorType
author_type,
# 4: content
content,
# 5: privilegeType
privilege_type,
# 6: isGiftDanmaku
1 if is_gift_danmaku else 0,
# 7: authorLevel
author_level,
# 8: isNewbie
1 if is_newbie else 0,
# 9: isMobileVerified
1 if is_mobile_verified else 0,
# 10: medalLevel
medal_level,
# 11: id
id_,
# 12: translation
translation,
# 13: contentType
content_type,
# 14: contentTypeParams
content_type_params if content_type_params is not None else [],
]
def make_emoticon_params(url):
return [
# 0: url
url,
]
def make_translation_message(msg_id, translation):
return [
# 0: id
msg_id,
# 1: translation
translation,
]
class RoomManager:
def __init__(self):
self._rooms: Dict[int, Room] = {}
async def add_client(self, room_id, client: 'ChatHandler'):
if room_id not in self._rooms:
if not await self._add_room(room_id):
client.close()
return
room = self._rooms.get(room_id, None)
if room is None:
return
room.clients.append(client)
logger.info('%d clients in room %s', len(room.clients), room_id)
if client.auto_translate:
room.auto_translate_count += 1
await client.on_join_room()
def del_client(self, room_id, client: 'ChatHandler'):
room = self._rooms.get(room_id, None)
if room is None:
return
try:
room.clients.remove(client)
except ValueError:
# _add_room未完成没有执行到room.clients.append
pass
else:
logger.info('%d clients in room %s', len(room.clients), room_id)
if client.auto_translate:
room.auto_translate_count = max(0, room.auto_translate_count - 1)
if not room.clients:
self._del_room(room_id)
async def _add_room(self, room_id):
if room_id in self._rooms:
return True
logger.info('Creating room %d', room_id)
self._rooms[room_id] = room = Room(room_id)
if await room.init_room():
room.start()
logger.info('%d rooms', len(self._rooms))
return True
else:
self._del_room(room_id)
return False
def _del_room(self, room_id):
room = self._rooms.get(room_id, None)
if room is None:
return
logger.info('Removing room %d', room_id)
for client in room.clients:
client.close()
asyncio.ensure_future(room.stop_and_close())
self._rooms.pop(room_id, None)
logger.info('%d rooms', len(self._rooms))
# noinspection PyAbstractClass
class ChatHandler(tornado.websocket.WebSocketHandler):
HEARTBEAT_INTERVAL = 10
RECEIVE_TIMEOUT = HEARTBEAT_INTERVAL + 5
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._heartbeat_timer_handle = None
self._receive_timeout_timer_handle = None
self.room_id = None
self.auto_translate = False
def open(self):
logger.info('Websocket connected %s', self.request.remote_ip)
self._heartbeat_timer_handle = asyncio.get_event_loop().call_later(
self.HEARTBEAT_INTERVAL, self._on_send_heartbeat
)
self._refresh_receive_timeout_timer()
def _on_send_heartbeat(self):
self.send_message(Command.HEARTBEAT, {})
self._heartbeat_timer_handle = asyncio.get_event_loop().call_later(
self.HEARTBEAT_INTERVAL, self._on_send_heartbeat
)
def _refresh_receive_timeout_timer(self):
if self._receive_timeout_timer_handle is not None:
self._receive_timeout_timer_handle.cancel()
self._receive_timeout_timer_handle = asyncio.get_event_loop().call_later(
self.RECEIVE_TIMEOUT, self._on_receive_timeout
)
def _on_receive_timeout(self):
logger.warning('Client %s timed out', self.request.remote_ip)
self._receive_timeout_timer_handle = None
self.close()
def on_close(self):
logger.info('Websocket disconnected %s room: %s', self.request.remote_ip, str(self.room_id))
if self.has_joined_room:
room_manager.del_client(self.room_id, self)
if self._heartbeat_timer_handle is not None:
self._heartbeat_timer_handle.cancel()
self._heartbeat_timer_handle = None
if self._receive_timeout_timer_handle is not None:
self._receive_timeout_timer_handle.cancel()
self._receive_timeout_timer_handle = None
def on_message(self, message):
try:
# 超时没有加入房间也断开
if self.has_joined_room:
self._refresh_receive_timeout_timer()
body = json.loads(message)
cmd = body['cmd']
if cmd == Command.HEARTBEAT:
pass
elif cmd == Command.JOIN_ROOM:
if self.has_joined_room:
return
self._refresh_receive_timeout_timer()
self.room_id = int(body['data']['roomId'])
logger.info('Client %s is joining room %d', self.request.remote_ip, self.room_id)
try:
cfg = body['data']['config']
self.auto_translate = cfg['autoTranslate']
except KeyError:
pass
asyncio.ensure_future(room_manager.add_client(self.room_id, self))
else:
logger.warning('Unknown cmd, client: %s, cmd: %d, body: %s', self.request.remote_ip, cmd, body)
except Exception:
logger.exception('on_message error, client: %s, message: %s', self.request.remote_ip, message)
# 跨域测试用
def check_origin(self, origin):
if self.application.settings['debug']:
return True
return super().check_origin(origin)
@property
def has_joined_room(self):
return self.room_id is not None
def send_message(self, cmd, data):
body = json.dumps({'cmd': cmd, 'data': data})
try:
self.write_message(body)
except tornado.websocket.WebSocketClosedError:
self.close()
async def on_join_room(self):
if self.application.settings['debug']:
await self.send_test_message()
# 不允许自动翻译的提示
if self.auto_translate:
cfg = config.get_config()
if cfg.allow_translate_rooms and self.room_id not in cfg.allow_translate_rooms:
self.send_message(Command.ADD_TEXT, make_text_message(
avatar_url=models.avatar.DEFAULT_AVATAR_URL,
timestamp=int(time.time()),
author_name='blivechat',
author_type=2,
content='Translation is not allowed in this room. Please download to use translation',
privilege_type=0,
is_gift_danmaku=False,
author_level=60,
is_newbie=False,
is_mobile_verified=True,
medal_level=0,
id_=uuid.uuid4().hex,
translation='',
content_type=ContentType.TEXT,
content_type_params=None,
))
# 测试用
async def send_test_message(self):
base_data = {
'avatarUrl': await models.avatar.get_avatar_url(300474),
'timestamp': int(time.time()),
'authorName': 'xfgryujk',
}
text_data = make_text_message(
avatar_url=base_data['avatarUrl'],
timestamp=base_data['timestamp'],
author_name=base_data['authorName'],
author_type=0,
content='我能吞下玻璃而不伤身体',
privilege_type=0,
is_gift_danmaku=False,
author_level=20,
is_newbie=False,
is_mobile_verified=True,
medal_level=0,
id_=uuid.uuid4().hex,
translation='',
content_type=ContentType.TEXT,
content_type_params=None,
)
member_data = {
**base_data,
'id': uuid.uuid4().hex,
'privilegeType': 3
}
gift_data = {
**base_data,
'id': uuid.uuid4().hex,
'totalCoin': 450000,
'giftName': '摩天大楼',
'num': 1
}
sc_data = {
**base_data,
'id': str(random.randint(1, 65535)),
'price': 30,
'content': 'The quick brown fox jumps over the lazy dog',
'translation': ''
}
self.send_message(Command.ADD_TEXT, text_data)
text_data[2] = '主播'
text_data[3] = 3
text_data[4] = "I can eat glass, it doesn't hurt me."
text_data[11] = uuid.uuid4().hex
self.send_message(Command.ADD_TEXT, text_data)
self.send_message(Command.ADD_MEMBER, member_data)
self.send_message(Command.ADD_SUPER_CHAT, sc_data)
sc_data['id'] = str(random.randint(1, 65535))
sc_data['price'] = 100
sc_data['content'] = '敏捷的棕色狐狸跳过了懒狗'
self.send_message(Command.ADD_SUPER_CHAT, sc_data)
# self.send_message(Command.DEL_SUPER_CHAT, {'ids': [sc_data['id']]})
self.send_message(Command.ADD_GIFT, gift_data)
gift_data['id'] = uuid.uuid4().hex
gift_data['totalCoin'] = 1245000
gift_data['giftName'] = '小电视飞船'
self.send_message(Command.ADD_GIFT, gift_data)
# noinspection PyAbstractClass
class RoomInfoHandler(api.base.ApiHandler):
_host_server_list_cache = blivedm_client.DEFAULT_DANMAKU_SERVER_LIST
async def get(self):
room_id = int(self.get_query_argument('roomId'))
logger.info('Client %s is getting room info %d', self.request.remote_ip, room_id)
room_id, owner_uid = await self._get_room_info(room_id)
host_server_list = await self._get_server_host_list(room_id)
if owner_uid == 0:
# 缓存3分钟
self.set_header('Cache-Control', 'private, max-age=180')
else:
# 缓存1天
self.set_header('Cache-Control', 'private, max-age=86400')
self.write({
'roomId': room_id,
'ownerUid': owner_uid,
'hostServerList': host_server_list
})
@staticmethod
async def _get_room_info(room_id):
try:
async with _http_session.get(blivedm_client.ROOM_INIT_URL, params={'room_id': room_id}
) as res:
if res.status != 200:
logger.warning('room %d _get_room_info failed: %d %s', room_id,
res.status, res.reason)
return room_id, 0
data = await res.json()
except (aiohttp.ClientConnectionError, asyncio.TimeoutError):
logger.exception('room %d _get_room_info failed', room_id)
return room_id, 0
if data['code'] != 0:
logger.warning('room %d _get_room_info failed: %s', room_id, data['message'])
return room_id, 0
room_info = data['data']['room_info']
return room_info['room_id'], room_info['uid']
@classmethod
async def _get_server_host_list(cls, _room_id):
return cls._host_server_list_cache
# 连接其他host必须要key
# try:
# async with _http_session.get(blivedm.DANMAKU_SERVER_CONF_URL, params={'id': room_id, 'type': 0}
# ) as res:
# if res.status != 200:
# logger.warning('room %d _get_server_host_list failed: %d %s', room_id,
# res.status, res.reason)
# return cls._host_server_list_cache
# data = await res.json()
# except (aiohttp.ClientConnectionError, asyncio.TimeoutError):
# logger.exception('room %d _get_server_host_list failed', room_id)
# return cls._host_server_list_cache
#
# if data['code'] != 0:
# logger.warning('room %d _get_server_host_list failed: %s', room_id, data['message'])
# return cls._host_server_list_cache
#
# host_server_list = data['data']['host_list']
# if not host_server_list:
# logger.warning('room %d _get_server_host_list failed: host_server_list is empty')
# return cls._host_server_list_cache
#
# cls._host_server_list_cache = host_server_list
# return host_server_list
# noinspection PyAbstractClass
class AvatarHandler(api.base.ApiHandler):
async def get(self):
uid = int(self.get_query_argument('uid'))
avatar_url = await models.avatar.get_avatar_url_or_none(uid)
if avatar_url is None:
avatar_url = models.avatar.DEFAULT_AVATAR_URL
# 缓存3分钟
self.set_header('Cache-Control', 'private, max-age=180')
else:
# 缓存1天
self.set_header('Cache-Control', 'private, max-age=86400')
self.write({
'avatarUrl': avatar_url
})