116 lines
4.2 KiB
Python
116 lines
4.2 KiB
Python
from __future__ import absolute_import
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from __future__ import print_function
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import sys
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import json
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import optparse
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from flask import Flask, request
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from importlib import import_module
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from typing import Any, Dict, Mapping, Union, List, Tuple
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from werkzeug.exceptions import BadRequest
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from six.moves.configparser import SafeConfigParser
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from zulip import Client
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from bots_api.bot_lib import ExternalBotHandler, StateHandler
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bots_config = {} # type: Dict[str, Mapping[str, str]]
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available_bots = [] # type: List[str]
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bots_lib_module = {} # type: Dict[str, Any]
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def read_config_file(config_file_path):
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# type: (str) -> None
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parser = SafeConfigParser()
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parser.read(config_file_path)
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for section in parser.sections():
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bots_config[section] = {
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"email": parser.get(section, 'email'),
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"key": parser.get(section, 'key'),
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"site": parser.get(section, 'site'),
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}
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def load_lib_modules():
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# type: () -> None
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for bot in available_bots:
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try:
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module_name = 'bots.{bot}.{bot}'.format(bot=bot)
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bots_lib_module[bot] = import_module(module_name)
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except ImportError:
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print("\n Import Error: Bot \"{}\" doesn't exists. Please make sure you have set up the flaskbotrc "
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"file correctly.\n".format(bot))
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sys.exit(1)
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app = Flask(__name__)
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@app.route('/bots/<bot>', methods=['POST'])
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def handle_bot(bot):
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# type: (str) -> Union[str, BadRequest]
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if bot not in available_bots:
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return BadRequest("requested bot service {} not supported".format(bot))
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client = Client(email=bots_config[bot]["email"],
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api_key=bots_config[bot]["key"],
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site=bots_config[bot]["site"])
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try:
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restricted_client = ExternalBotHandler(client)
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except SystemExit:
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return BadRequest("Cannot fetch user profile for bot {}, make sure you have set up the flaskbotrc "
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"file correctly.".format(bot))
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message_handler = bots_lib_module[bot].handler_class()
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# TODO: Handle stateful bots properly.
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state_handler = StateHandler()
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event = json.loads(request.data)
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message_handler.handle_message(message=event["message"],
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bot_handler=restricted_client,
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state_handler=state_handler)
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return "Success!"
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def parse_args():
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# type: () -> Tuple[Any, Any]
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usage = '''
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zulip-bot-server --config-file <path to flaskbotrc> --hostname <address> --port <port>
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Example: zulip-bot-server --config-file ~/flaskbotrc
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(This program loads the bot configurations from the
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config file (flaskbotrc here) and loads the bot modules.
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It then starts the server and fetches the requests to the
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above loaded modules and returns the success/failure result)
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Please make sure you have a current flaskbotrc file with the
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configurations of the required bots.
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Hostname and Port are optional arguments. Default hostname is
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127.0.0.1 and default port is 5002.
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See lib/readme.md for more context.
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'''
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parser = optparse.OptionParser(usage=usage)
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parser.add_option('--config-file',
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action='store',
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help='(config file for the zulip bot server (flaskbotrc))')
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parser.add_option('--hostname',
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action='store',
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default="127.0.0.1",
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help='(address on which you want to run the server)')
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parser.add_option('--port',
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action='store',
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default=5002,
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help='(port on which you want to run the server)')
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(options, args) = parser.parse_args()
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if not options.config_file: # if flaskbotrc is not given
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parser.error('Flaskbotrc not given')
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return (options, args)
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def main():
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# type: () -> None
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(options, args) = parse_args()
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read_config_file(options.config_file)
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global available_bots
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available_bots = list(bots_config.keys())
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load_lib_modules()
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app.run(host=options.hostname, port=options.port, debug=True)
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if __name__ == '__main__':
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main()
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