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zulip_botserver: Get rid of some global variables.

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Guitar1st 2018-05-15 14:55:58 +00:00 • committed by Tim Abbott
parent 7b6da265ea
commit f90913d54c
3 changed files with 35 additions and 23 deletions
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39
zulip_botserver/zulip_botserver/server.py
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@ -6,7 +6,7 @@ import sys
from flask import Flask, request
from importlib import import_module
from typing import Any, Dict, Union, List, Optional
from typing import Any, Dict, Union, List
from werkzeug.exceptions import BadRequest
from zulip import Client
@ -14,8 +14,7 @@ from zulip_bots.custom_exceptions import ConfigValidationError
from zulip_bots.lib import ExternalBotHandler, StateHandler
available_bots = [] # type: List[str]
bots_lib_module = {} # type: Dict[str, Any]
bot_handlers = {} # type: Dict[str, ExternalBotHandler]
def read_config_file(config_file_path: str) -> Dict[str, Dict[str, str]]:
config_file_path = os.path.abspath(os.path.expanduser(config_file_path))
@ -33,7 +32,9 @@ def read_config_file(config_file_path: str) -> Dict[str, Dict[str, str]]:
}
return bots_config
def load_lib_modules() -> None:
def load_lib_modules() -> Dict[str, Any]:
bots_lib_module = {}
for bot in available_bots:
try:
module_name = 'zulip_bots.bots.{bot}.{bot}'.format(bot=bot)
@ -41,13 +42,17 @@ def load_lib_modules() -> None:
bots_lib_module[bot] = lib_module
except ImportError:
raise ImportError(
"\n Import Error: Bot \"{}\" doesn't exists. Please make sure you have set up the flaskbotrc "
"file correctly.\n".format(bot)
"\nImport Error: Bot \"{}\" doesn't exists. "
"Please make sure you have set up the flaskbotrc file correctly.\n".format(bot)
)
return bots_lib_module
def load_bot_handlers(
bots_config: Dict[str, Dict[str, str]],
) -> Optional[BadRequest]:
bots_lib_module: Dict[str, Any],
) -> Union[Dict[str, ExternalBotHandler], BadRequest]:
bot_handlers = {}
for bot in available_bots:
client = Client(email=bots_config[bot]["email"],
api_key=bots_config[bot]["key"],
@ -64,7 +69,7 @@ def load_bot_handlers(
)
bot_handlers[bot] = bot_handler
lib_module = get_bot_lib_module(bot)
lib_module = bots_lib_module[bot]
message_handler = lib_module.handler_class()
if hasattr(message_handler, 'validate_config'):
config_data = bot_handlers[bot].get_config_info(bot)
@ -79,18 +84,15 @@ def load_bot_handlers(
except SystemExit:
return BadRequest("Cannot fetch user profile for bot {}, make sure you have set up the flaskbotrc "
"file correctly.".format(bot))
return None
return bot_handlers
def get_bot_lib_module(bot: str) -> Any:
if bot in bots_lib_module.keys():
return bots_lib_module[bot]
return None
app = Flask(__name__)
@app.route('/bots/<bot>', methods=['POST'])
def handle_bot(bot: str) -> Union[str, BadRequest]:
lib_module = get_bot_lib_module(bot)
lib_module = app.config.get("BOTS_LIB_MODULES", {}).get(bot)
if lib_module is None:
return BadRequest("Can't find the configuration or Bot Handler code for bot {}. "
"Make sure that the `zulip_bots` package is installed, and "
@ -99,9 +101,10 @@ def handle_bot(bot: str) -> Union[str, BadRequest]:
event = request.get_json(force=True)
message_handler.handle_message(message=event["message"],
bot_handler=bot_handlers[bot])
bot_handler=app.config["BOT_HANDLERS"].get(bot))
return json.dumps("")
def parse_args() -> argparse.Namespace:
usage = '''
zulip-bot-server --config-file <path to flaskbotrc> --hostname <address> --port <port>
@ -139,8 +142,10 @@ def main() -> None:
bots_config = read_config_file(options.config_file)
global available_bots
available_bots = list(bots_config.keys())
load_lib_modules()
load_bot_handlers(bots_config)
bots_lib_modules = load_lib_modules()
bot_handlers = load_bot_handlers(bots_config, bots_lib_modules)
app.config["BOTS_LIB_MODULES"] = bots_lib_modules
app.config["BOT_HANDLERS"] = bot_handlers
app.run(host=options.hostname, port=int(options.port), debug=True)
if __name__ == '__main__':