138 lines
5.3 KiB
Python
Executable file
138 lines
5.3 KiB
Python
Executable file
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
import sys
|
|
import os
|
|
import argparse
|
|
import traceback
|
|
import multiprocessing as mp
|
|
import zulip
|
|
import slack_sdk
|
|
from slack_sdk.rtm import RTMClient
|
|
from typing import Any, Dict, Callable
|
|
|
|
import bridge_with_slack_config
|
|
|
|
# change these templates to change the format of displayed message
|
|
ZULIP_MESSAGE_TEMPLATE = "**{username}**: {message}"
|
|
SLACK_MESSAGE_TEMPLATE = "<{username}> {message}"
|
|
|
|
def check_zulip_message_validity(msg: Dict[str, Any], config: Dict[str, Any]) -> bool:
|
|
is_a_stream = msg["type"] == "stream"
|
|
in_the_specified_stream = msg["display_recipient"] == config["stream"]
|
|
at_the_specified_subject = msg["subject"] == config["topic"]
|
|
|
|
# We do this to identify the messages generated from Matrix -> Zulip
|
|
# and we make sure we don't forward it again to the Matrix.
|
|
not_from_zulip_bot = msg["sender_email"] != config["email"]
|
|
if is_a_stream and not_from_zulip_bot and in_the_specified_stream and at_the_specified_subject:
|
|
return True
|
|
return False
|
|
|
|
class SlackBridge:
|
|
def __init__(self, config: Dict[str, Any]) -> None:
|
|
self.config = config
|
|
self.zulip_config = config["zulip"]
|
|
self.slack_config = config["slack"]
|
|
|
|
# zulip-specific
|
|
self.zulip_client = zulip.Client(
|
|
email=self.zulip_config["email"],
|
|
api_key=self.zulip_config["api_key"],
|
|
site=self.zulip_config["site"])
|
|
self.zulip_stream = self.zulip_config["stream"]
|
|
self.zulip_subject = self.zulip_config["topic"]
|
|
|
|
# slack-specific
|
|
self.channel = self.slack_config["channel"]
|
|
self.slack_client = RTMClient(token=self.slack_config["token"], auto_reconnect=True)
|
|
# Spawn a non-websocket client for getting the users
|
|
# list and for posting messages in Slack.
|
|
self.slack_webclient = slack_sdk.WebClient(token=self.slack_config["token"])
|
|
|
|
def wrap_slack_mention_with_bracket(self, zulip_msg: Dict[str, Any]) -> None:
|
|
words = zulip_msg["content"].split(' ')
|
|
for w in words:
|
|
if w.startswith('@'):
|
|
zulip_msg["content"] = zulip_msg["content"].replace(w, '<' + w + '>')
|
|
|
|
def replace_slack_id_with_name(self, msg: Dict[str, Any]) -> None:
|
|
words = msg['text'].split(' ')
|
|
for w in words:
|
|
if w.startswith('<@') and w.endswith('>'):
|
|
_id = w[2:-1]
|
|
msg['text'] = msg['text'].replace(_id, self.slack_id_to_name[_id])
|
|
|
|
def zulip_to_slack(self) -> Callable[[Dict[str, Any]], None]:
|
|
def _zulip_to_slack(msg: Dict[str, Any]) -> None:
|
|
message_valid = check_zulip_message_validity(msg, self.zulip_config)
|
|
if message_valid:
|
|
self.wrap_slack_mention_with_bracket(msg)
|
|
slack_text = SLACK_MESSAGE_TEMPLATE.format(username=msg["sender_full_name"],
|
|
message=msg["content"])
|
|
self.slack_webclient.chat_postMessage(
|
|
channel=self.channel,
|
|
text=slack_text,
|
|
)
|
|
return _zulip_to_slack
|
|
|
|
def run_slack_listener(self) -> None:
|
|
members = self.slack_webclient.users_list()['members']
|
|
# See also https://api.slack.com/changelog/2017-09-the-one-about-usernames
|
|
self.slack_id_to_name = {u["id"]: u["profile"].get("display_name", u["profile"]["real_name"]) for u in members}
|
|
self.slack_name_to_id = {v: k for k, v in self.slack_id_to_name.items()}
|
|
|
|
@RTMClient.run_on(event='message')
|
|
def slack_to_zulip(**payload: Any) -> None:
|
|
msg = payload['data']
|
|
if msg['channel'] != self.channel:
|
|
return
|
|
user_id = msg['user']
|
|
user = self.slack_id_to_name[user_id]
|
|
from_bot = user == self.slack_config['username']
|
|
if from_bot:
|
|
return
|
|
self.replace_slack_id_with_name(msg)
|
|
content = ZULIP_MESSAGE_TEMPLATE.format(username=user, message=msg['text'])
|
|
msg_data = dict(
|
|
type="stream",
|
|
to=self.zulip_stream,
|
|
subject=self.zulip_subject,
|
|
content=content)
|
|
self.zulip_client.send_message(msg_data)
|
|
|
|
self.slack_client.start()
|
|
|
|
if __name__ == "__main__":
|
|
usage = """run-slack-bridge
|
|
|
|
Relay each message received at a specified subject in a specified stream from
|
|
the first realm to a channel in a Slack workspace.
|
|
"""
|
|
|
|
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
|
|
parser = argparse.ArgumentParser(usage=usage)
|
|
|
|
print("Starting slack mirroring bot")
|
|
print("MAKE SURE THE BOT IS SUBSCRIBED TO THE RELEVANT ZULIP STREAM")
|
|
|
|
config = bridge_with_slack_config.config
|
|
|
|
backoff = zulip.RandomExponentialBackoff(timeout_success_equivalent=300)
|
|
while backoff.keep_going():
|
|
try:
|
|
sb = SlackBridge(config)
|
|
|
|
zp = mp.Process(target=sb.zulip_client.call_on_each_message, args=(sb.zulip_to_slack(),))
|
|
sp = mp.Process(target=sb.run_slack_listener, args=())
|
|
print("Starting message handler on Zulip client")
|
|
zp.start()
|
|
print("Starting message handler on Slack client")
|
|
sp.start()
|
|
|
|
zp.join()
|
|
sp.join()
|
|
except Exception:
|
|
traceback.print_exc()
|
|
backoff.fail()
|