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beam.py
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beam.py
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"""Connects to Beam's chat and liveloading."""
from tornado.websocket import websocket_connect
from tornado.gen import coroutine
from requests import Session
from requests.compat import urljoin
from logging import getLogger as get_logger
from logging import getLevelName as get_level_name
from logging import StreamHandler, FileHandler, Formatter
from functools import partial
from json import dumps, loads
import re
import time
from models import User, session
class Beam:
PATH = "https://beam.pro/api/v1/"
def __init__(self, debug="INFO", **kwargs):
self._init_logger(debug, kwargs.get("log_to_file", True))
self.message_id = 0
self.csrf_token = None
self.quiet = None
self.bot_id = None
self.channel_id = None
self.http_session = Session()
def _init_logger(self, level="INFO", file_logging=True, **kwargs):
"""Initialize logger."""
self.logger = get_logger("CactusBot")
self.logger.propagate = False
self.logger.setLevel("DEBUG")
if level is True or level.lower() == "true":
level = "DEBUG"
elif level is False or level.lower() == "false":
level = "WARNING"
elif hasattr(level, "upper"):
level = level.upper()
format = kwargs.get(
"format",
"%(asctime)s %(name)s %(levelname)-8s %(message)s"
)
formatter = Formatter(format, datefmt='%Y-%m-%d %H:%M:%S')
try:
from coloredlogs import ColoredFormatter
colored_formatter = ColoredFormatter(format)
except ImportError:
colored_formatter = formatter
self.logger.warning(
"Module 'coloredlogs' unavailable; using normal logging.")
stream_handler = StreamHandler()
stream_handler.setLevel(level)
stream_handler.setFormatter(colored_formatter)
self.logger.addHandler(stream_handler)
if file_logging:
file_handler = FileHandler("latest.log")
file_handler.setLevel("DEBUG")
file_handler.setFormatter(formatter)
self.logger.addHandler(file_handler)
get_logger("requests").setLevel(get_level_name("WARNING"))
self.logger.info("Logger initialized with level '{}'.".format(level))
def _init_users(self):
viewers = set(
user["userId"] for user in
self.get_chat_users(self.channel_data["id"]))
stored_users = set(
user[0] for user in session.query(User).with_entities(User.id))
for user in viewers - stored_users:
user = User(id=user, joins=1)
session.add(user)
session.commit()
self.logger.info("Successfully added new users to database.")
def _request(self, url, method="GET", **kwargs):
"""Send HTTP request to Beam."""
response = self.http_session.request(
method,
urljoin(self.PATH, url.lstrip('/')),
headers={"X-CSRF-Token": self.csrf_token},
**kwargs
)
if self.csrf_token is None:
self.csrf_token = response.headers.get("X-CSRF-Token")
elif response.status_code == 461:
self.csrf_token = response.headers.get("X-CSRF-Token")
self._request(url, method, **kwargs)
try:
return response.json()
except Exception:
return response.text
def login(self, username, password, code=''):
"""Authenticate and login with Beam."""
packet = {
"username": username,
"password": password,
"code": code
}
return self._request("/users/login", method="POST", data=packet)
def get_channel(self, id, **params):
"""Get channel data by username."""
return self._request("/channels/{id}".format(id=id), params=params)
def get_chat(self, id):
"""Get chat server data."""
return self._request("/chats/{id}".format(id=id))
def get_chat_users(self, id):
return self._request("/chats/{id}/users".format(id=id))
def connect(self, channel_id, bot_id, quiet=False):
"""Connect to a Beam chat through a websocket."""
self.channel_id = channel_id
self.bot_id = bot_id
self.quiet = quiet
self.connection_information = {
"channel_id": self.channel_id,
"bot_id": self.bot_id,
"quiet": self.quiet
}
chat = self.get_chat(channel_id)
self.servers = chat["endpoints"]
self.server_offset = 0
authkey = chat["authkey"]
self.logger.debug("Connecting to: {server}.".format(
server=self.servers[self.server_offset]))
websocket_connection = websocket_connect(
self.servers[self.server_offset])
if quiet is True:
websocket_connection.add_done_callback(
partial(self.authenticate, channel_id))
else:
websocket_connection.add_done_callback(
partial(self.authenticate, channel_id, bot_id, authkey))
def authenticate(self, *args):
"""Authenticate session to a Beam chat through a websocket."""
future = args[-1]
if future.exception() is None:
self.websocket = future.result()
self.logger.info("Successfully connected to chat {}.".format(
self.channel_data["token"]))
self.send_message(*args[:-1], method="auth")
if self.quiet:
self.http_session = Session()
self.read_chat(self.handle)
else:
self.logger.error("There was an issue connecting.")
self.logger.error("Trying again in 10 seconds.")
time.sleep(10)
self.connect(self.channel_id, self.bot_id, self.quiet)
def send_message(self, *args, method="msg"):
"""Send a message to a Beam chat through a websocket."""
if self.quiet and method != "auth":
if self.quiet is True:
return
if method == "msg":
args = (self.quiet, r'\n'.join(args))
elif method == "whisper":
args = (
self.quiet,
"> {args[0]} | {args[1]}".format(
args=args,
)
)
method = "whisper"
if method == "msg":
for message in args:
for chunk in re.findall(r'.{1,500}', message):
message_packet = {
"type": "method",
"method": "msg",
"arguments": (chunk,),
"id": self.message_id
}
self.websocket.write_message(dumps(message_packet))
self.message_id += 1
else:
message_packet = {
"type": "method",
"method": method,
"arguments": args,
"id": self.message_id
}
self.websocket.write_message(dumps(message_packet))
self.message_id += 1
if method == "whisper":
self.logger.info("$ [{bot} > {user}] {message}".format(
bot=self.config["auth"]["username"],
user=args[0],
message=args[1]))
def remove_message(self, message_id):
"""Remove a message from chat."""
return self.send_message(message_id, method="deleteMessage")
@coroutine
def read_chat(self, handler=None):
"""Read and handle messages from a Beam chat through a websocket."""
while True:
message = yield self.websocket.read_message()
if message is None:
self.logger.warning(
"Connection to chat server lost. Attempting to reconnect.")
self.server_offset += 1
self.server_offset %= len(self.servers)
self.logger.debug("Connecting to: {server}.".format(
server=self.servers[self.server_offset]))
websocket_connection = websocket_connect(
self.servers[self.server_offset])
try:
authkey = self.get_chat(
self.connection_information["channel_id"])["authkey"]
except TypeError:
self.logger.error("Couldn't get the auth key from data.")
self.read_chat(self.handle)
else:
if self.connection_information["quiet"]:
return websocket_connection.add_done_callback(
partial(
self.authenticate,
self.connection_information["channel_id"]
)
)
else:
return websocket_connection.add_done_callback(
partial(
self.authenticate,
self.connection_information["channel_id"],
self.connection_information["bot_id"],
authkey
)
)
else:
response = loads(message)
self.logger.debug("CHAT: {}".format(response))
if callable(handler):
handler(response)
def connect_to_constellation(self, channel_id, user_id):
"""Connect to Beam liveloading."""
self.constellation_connection_information = {
"channel_id": channel_id,
"user_id": user_id
}
constellation_websocket_connection = websocket_connect(
"wss://constellation.beam.pro")
constellation_websocket_connection.add_done_callback(
partial(self.subscribe_to_liveloading, channel_id, user_id))
def subscribe_to_liveloading(self, channel_id, user_id, future):
"""Subscribe to Beam constellation."""
if future.exception() is None:
self.constellation_websocket = future.result()
self.logger.info(
"Successfully connected to constellation websocket.")
interfaces = [
"channel:{channel}:update".format(channel=channel_id),
"channel:{channel}:followed".format(channel=channel_id),
"channel:{channel}:subscribed".format(channel=channel_id),
"channel:{channel}:resubscribed".format(channel=channel_id),
"channel:{channel}:hosted".format(channel=channel_id),
"user:{user}:update".format(user=user_id)
]
self.subscribe_to_interfaces(interfaces)
self.logger.info(
"Successfully subscribed to Constellation interfaces.")
self.watch_constellation()
else:
self.logger.warning(future.exception())
self.connect_to_constellation(channel_id, user_id)
def subscribe_to_interfaces(self, interfaces: list):
"""Subscribe to a Beam constellation interface."""
packet = {
"type": "method",
"method": "livesubscribe",
"params": {
"events": interfaces
},
"id": 1
}
self.constellation_websocket.write_message(dumps(packet))
def parse_constellation_message(self, packet):
try:
packet = loads(packet)
except:
return ""
else:
if "data" in packet and "payload" in packet["data"]:
return packet["data"]
else:
return ""
@coroutine
def watch_constellation(self):
"""Watch and handle packets from the Beam liveloading websocket."""
response = yield self.constellation_websocket.read_message()
if response is None:
raise ConnectionError
while True:
message = yield self.constellation_websocket.read_message()
message = self.parse_constellation_message(message)
if message is None or message is "":
pass
else:
self.logger.debug("LIVE: {}".format(message))
if "followed" in message["channel"]:
if message["payload"]["following"]:
self.send_message(
"Thanks for the follow, @{} !".format(
message["payload"]["user"]["username"]))
self.logger.info("- {} followed.".format(
message["payload"]["user"]["username"]))
elif "subscribed" in message["channel"]:
self.send_message("Thanks for subscribing, @{} !".format(
message["payload"]["user"]["username"]
))
elif "resubscribed" in message["channel"]:
self.send_message("Thanks for subscribing, @{} !".format(
message["payload"]["user"]["username"]
))
# if message is None:
# self.logger.info("Connection to Constellation lost.")
# self.logger.info("Attempting to reconnect.")
# return self.connect_to_constellation(
# **self.constellation_connection_information)
# self.logger.info("Attempting to reconnect.")
# self.watch_constellation()