mirror of
https://github.com/python-telegram-bot/python-telegram-bot.git
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133 lines
4.8 KiB
Python
133 lines
4.8 KiB
Python
#!/usr/bin/env python
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#
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# A library that provides a Python interface to the Telegram Bot API
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# Copyright (C) 2015-2018
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# Leandro Toledo de Souza <devs@python-telegram-bot.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser Public License for more details.
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#
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# You should have received a copy of the GNU Lesser Public License
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# along with this program. If not, see [http://www.gnu.org/licenses/].
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import logging
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from telegram import Update
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from future.utils import bytes_to_native_str
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from threading import Lock
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try:
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import ujson as json
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except ImportError:
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import json
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from tornado.httpserver import HTTPServer
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from tornado.ioloop import IOLoop
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import tornado.web
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import tornado.iostream
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logging.getLogger(__name__).addHandler(logging.NullHandler())
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class WebhookServer(object):
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def __init__(self, listen, port, webhook_app, ssl_ctx):
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self.http_server = HTTPServer(webhook_app, ssl_options=ssl_ctx)
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self.listen = listen
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self.port = port
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self.loop = None
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self.logger = logging.getLogger(__name__)
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self.is_running = False
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self.server_lock = Lock()
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self.shutdown_lock = Lock()
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def serve_forever(self):
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with self.server_lock:
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IOLoop().make_current()
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self.is_running = True
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self.logger.debug('Webhook Server started.')
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self.http_server.listen(self.port, address=self.listen)
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self.loop = IOLoop.current()
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self.loop.start()
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self.logger.debug('Webhook Server stopped.')
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self.is_running = False
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def shutdown(self):
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with self.shutdown_lock:
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if not self.is_running:
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self.logger.warning('Webhook Server already stopped.')
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return
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else:
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self.loop.add_callback(self.loop.stop)
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def handle_error(self, request, client_address):
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"""Handle an error gracefully."""
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self.logger.debug('Exception happened during processing of request from %s',
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client_address, exc_info=True)
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class WebhookAppClass(tornado.web.Application):
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def __init__(self, webhook_path, bot, update_queue):
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self.shared_objects = {"bot": bot, "update_queue": update_queue}
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handlers = [
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(r"{0}/?".format(webhook_path), WebhookHandler,
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self.shared_objects)
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] # noqa
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tornado.web.Application.__init__(self, handlers)
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def log_request(self, handler):
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pass
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# WebhookHandler, process webhook calls
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class WebhookHandler(tornado.web.RequestHandler):
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SUPPORTED_METHODS = ["POST"]
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def __init__(self, application, request, **kwargs):
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super(WebhookHandler, self).__init__(application, request, **kwargs)
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self.logger = logging.getLogger(__name__)
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def initialize(self, bot, update_queue):
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self.bot = bot
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self.update_queue = update_queue
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def set_default_headers(self):
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self.set_header("Content-Type", 'application/json; charset="utf-8"')
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def post(self):
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self.logger.debug('Webhook triggered')
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self._validate_post()
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json_string = bytes_to_native_str(self.request.body)
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data = json.loads(json_string)
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self.set_status(200)
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self.logger.debug('Webhook received data: ' + json_string)
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update = Update.de_json(data, self.bot)
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self.logger.debug('Received Update with ID %d on Webhook' % update.update_id)
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self.update_queue.put(update)
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def _validate_post(self):
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ct_header = self.request.headers.get("Content-Type", None)
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if ct_header != 'application/json':
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raise tornado.web.HTTPError(403)
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def write_error(self, status_code, **kwargs):
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"""Log an arbitrary message.
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This is used by all other logging functions.
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It overrides ``BaseHTTPRequestHandler.log_message``, which logs to ``sys.stderr``.
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The first argument, FORMAT, is a format string for the message to be logged. If the format
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string contains any % escapes requiring parameters, they should be specified as subsequent
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arguments (it's just like printf!).
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The client ip is prefixed to every message.
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"""
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super(WebhookHandler, self).write_error(status_code, **kwargs)
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self.logger.debug("%s - - %s" % (self.request.remote_ip, "Exception in WebhookHandler"),
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exc_info=kwargs['exc_info'])
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