135 lines
4.9 KiB
Python
135 lines
4.9 KiB
Python
import configparser
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import logging
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import json
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import os
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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, Union, List, Optional
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from werkzeug.exceptions import BadRequest
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from zulip import Client
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from zulip_bots.lib import ExternalBotHandler
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from zulip_botserver.input_parameters import parse_args
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available_bots = [] # type: List[str]
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def read_config_file(config_file_path: str, bot_name: Optional[str]=None) -> Dict[str, Dict[str, str]]:
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parser = parse_config_file(config_file_path)
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bots_config = {}
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for section in parser.sections():
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section_info = {
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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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if bot_name is not None:
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bots_config[bot_name] = section_info
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logging.warning("First bot name in the config list was changed to '{}'. "
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"Other bots will be ignored".format(bot_name))
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return bots_config
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bots_config[section] = section_info
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return bots_config
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def parse_config_file(config_file_path: str) -> configparser.ConfigParser:
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config_file_path = os.path.abspath(os.path.expanduser(config_file_path))
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if not os.path.isfile(config_file_path):
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raise IOError("Could not read config file {}: File not found.".format(config_file_path))
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parser = configparser.ConfigParser()
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parser.read(config_file_path)
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return parser
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def load_lib_modules() -> Dict[str, Any]:
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bots_lib_module = {}
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for bot in available_bots:
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try:
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module_name = 'zulip_bots.bots.{bot}.{bot}'.format(bot=bot)
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lib_module = import_module(module_name)
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bots_lib_module[bot] = lib_module
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except ImportError:
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raise ImportError(
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"\nImport Error: Bot \"{}\" doesn't exists. "
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"Please make sure you have set up the flaskbotrc file correctly.\n".format(bot)
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)
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return bots_lib_module
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def load_bot_handlers(
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bots_config: Dict[str, Dict[str, str]],
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bot_config_file: Optional[str]=None
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) -> Dict[str, ExternalBotHandler]:
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bot_handlers = {}
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third_party_bot_conf = parse_config_file(bot_config_file) if bot_config_file is not None else None
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for bot in available_bots:
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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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bot_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'bots', bot)
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bot_handler = ExternalBotHandler(
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client,
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bot_dir,
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bot_details={},
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bot_config_parser=third_party_bot_conf
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)
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bot_handlers[bot] = bot_handler
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return bot_handlers
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def init_message_handlers(
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bots_lib_modules: Dict[str, Any],
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bot_handlers: Dict[str, ExternalBotHandler],
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) -> Dict[str, Any]:
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message_handlers = {}
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for bot in available_bots:
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bot_lib_module = bots_lib_modules[bot]
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bot_handler = bot_handlers[bot]
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message_handler = bot_lib_module.handler_class()
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if hasattr(message_handler, 'validate_config'):
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config_data = bot_handler.get_config_info(bot)
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bot_lib_module.handler_class.validate_config(config_data)
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if hasattr(message_handler, 'initialize'):
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message_handler.initialize(bot_handler=bot_handler)
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message_handlers[bot] = message_handler
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return message_handlers
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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: str) -> Union[str, BadRequest]:
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lib_module = app.config.get("BOTS_LIB_MODULES", {}).get(bot)
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bot_handler = app.config.get("BOT_HANDLERS", {}).get(bot)
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message_handler = app.config.get("MESSAGE_HANDLERS", {}).get(bot)
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if lib_module is None:
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return BadRequest("Can't find the configuration or Bot Handler code for bot {}. "
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"Make sure that the `zulip_bots` package is installed, and "
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"that your flaskbotrc is set up correctly".format(bot))
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event = request.get_json(force=True)
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message_handler.handle_message(message=event["message"], bot_handler=bot_handler)
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return json.dumps("")
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def main() -> None:
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options = parse_args()
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bots_config = read_config_file(options.config_file, options.bot_name)
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global available_bots
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available_bots = list(bots_config.keys())
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bots_lib_modules = load_lib_modules()
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bot_handlers = load_bot_handlers(bots_config, options.bot_config_file)
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message_handlers = init_message_handlers(bots_lib_modules, bot_handlers)
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app.config["BOTS_LIB_MODULES"] = bots_lib_modules
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app.config["BOT_HANDLERS"] = bot_handlers
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app.config["MESSAGE_HANDLERS"] = message_handlers
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app.run(host=options.hostname, port=int(options.port), debug=True)
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if __name__ == '__main__':
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main()
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