8295d6775d
Splitting out some of the bot functions into a library will make it easier for heavily customized bots to have their own version of run.py, instead of the shared one that we use for everyone now. If they use bot_lib.py directly, they will still most likely conform to the "Handler" interface as long as they call run_message_handler_for_bot. Most bots should continue to use contrib_bots/run.py for now.
95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
from __future__ import print_function
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import logging
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import os
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import signal
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import sys
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import time
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our_dir = os.path.dirname(os.path.abspath(__file__))
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# For dev setups, we can find the API in the repo itself.
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if os.path.exists(os.path.join(our_dir, '../api/zulip')):
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sys.path.insert(0, '../api')
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from zulip import Client
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def exit_gracefully(signum, frame):
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sys.exit(0)
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class RateLimit(object):
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def __init__(self, message_limit, interval_limit):
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self.message_limit = message_limit
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self.interval_limit = interval_limit
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self.message_list = []
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def is_legal(self):
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self.message_list.append(time.time())
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if len(self.message_list) > self.message_limit:
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self.message_list.pop(0)
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time_diff = self.message_list[-1] - self.message_list[0]
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return time_diff >= self.interval_limit
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else:
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return True
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class BotHandlerApi(object):
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def __init__(self, client):
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# Only expose a subset of our Client's functionality
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user_profile = client.get_profile()
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self._rate_limit = RateLimit(20, 5)
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self._client = client
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try:
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self.full_name = user_profile['full_name']
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self.email = user_profile['email']
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except KeyError:
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logging.error('Cannot fetch user profile, make sure you have set'
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' up the zuliprc file correctly.')
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sys.exit(1)
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def send_message(self, *args, **kwargs):
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if self._rate_limit.is_legal():
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self._client.send_message(*args, **kwargs)
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else:
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logging.error('-----> !*!*!*MESSAGE RATE LIMIT REACHED, EXITING*!*!*! <-----\n'
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'Is your bot trapped in an infinite loop by reacting to'
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' its own messages?')
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sys.exit(1)
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def run_message_handler_for_bot(lib_module, quiet, config_file):
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# Make sure you set up your ~/.zuliprc
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client = Client(config_file=config_file)
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restricted_client = BotHandlerApi(client)
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message_handler = lib_module.handler_class()
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class StateHandler(object):
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def __init__(self):
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self.state = None
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def set_state(self, state):
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self.state = state
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def get_state(self):
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return self.state
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state_handler = StateHandler()
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if not quiet:
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print(message_handler.usage())
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def handle_message(message):
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logging.info('waiting for next message')
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if message_handler.triage_message(message=message,
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client=restricted_client):
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message_handler.handle_message(
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message=message,
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client=restricted_client,
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state_handler=state_handler
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)
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signal.signal(signal.SIGINT, exit_gracefully)
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logging.info('starting message handling...')
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client.call_on_each_message(handle_message)
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