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https://github.com/zulip/zulip.git
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e06722657a
This requires doing a puppet apply on our servers to take effect properly. (imported from commit 19dc56f071f07a5d2571eef49dd835121b2e82b6)
236 lines
9.4 KiB
Python
236 lines
9.4 KiB
Python
from __future__ import absolute_import
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from django.conf import settings
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from django.utils.timezone import now
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from zerver.models import Message, UserProfile, \
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Recipient, get_user_profile_by_id
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from zerver.decorator import JsonableError
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from zerver.lib.cache import cache_get_many, message_cache_key, \
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user_profile_by_id_cache_key, cache_save_user_profile
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from zerver.lib.cache_helpers import cache_save_message
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from zerver.lib.queue import queue_json_publish
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from zerver.lib.event_queue import get_client_descriptors_for_user,\
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get_client_descriptors_for_realm_all_streams
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from zerver.lib.timestamp import timestamp_to_datetime
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import time
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import logging
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import requests
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import ujson
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import datetime
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# Send email notifications to idle users
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# after they are idle for 1 hour
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NOTIFY_AFTER_IDLE_HOURS = 1
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def update_pointer(user_profile_id, new_pointer):
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event = dict(type='pointer', pointer=new_pointer)
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for client in get_client_descriptors_for_user(user_profile_id):
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if client.accepts_event_type(event['type']):
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client.add_event(event.copy())
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def receives_offline_notifications(user_profile):
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return ((user_profile.enable_offline_email_notifications or
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user_profile.enable_offline_push_notifications) and
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not user_profile.is_bot)
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def receives_offline_notifications_by_id(user_profile_id):
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user_profile = get_user_profile_by_id(user_profile_id)
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return receives_offline_notifications(user_profile)
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def build_offline_notification_event(user_profile_id, message_id):
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return {"user_profile_id": user_profile_id,
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"message_id": message_id,
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"timestamp": time.time()}
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def missedmessage_hook(user_profile_id, queue, last_for_client):
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# Only process missedmessage hook when the last queue for a
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# client has been garbage collected
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if not last_for_client:
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return
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# If a user has gone offline but has unread messages
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# received in the idle time, send them a missed
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# message email
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if not receives_offline_notifications_by_id(user_profile_id):
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return
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message_ids = []
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for event in queue.event_queue.contents():
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if not event['type'] == 'message' or not event['flags']:
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continue
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if 'mentioned' in event['flags'] and not 'read' in event['flags']:
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message_ids.append(event['message']['id'])
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for msg_id in message_ids:
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event = build_offline_notification_event(user_profile_id, msg_id)
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queue_json_publish("missedmessage_emails", event, lambda event: None)
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def cache_load_message_data(message_id, users):
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# Get everything that we'll need out of memcached in one fetch, to save round-trip times:
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# * The message itself
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# * Every recipient's UserProfile
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user_profile_keys = [user_profile_by_id_cache_key(user_data['id']) for user_data in users]
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cache_keys = [message_cache_key(message_id)]
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cache_keys.extend(user_profile_keys)
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# Single memcached fetch
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result = cache_get_many(cache_keys)
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cache_extractor = lambda result: result[0] if result is not None else None
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message = cache_extractor(result.get(cache_keys[0], None))
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user_profiles = dict((user_data['id'], cache_extractor(result.get(user_profile_by_id_cache_key(user_data['id']), None)))
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for user_data in users)
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# Any data that was not found in memcached, we have to load from the database
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# and save back. This should never happen---we take steps to keep recent messages,
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# all user profile & presence objects in memcached.
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if message is None:
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if not settings.TEST_SUITE:
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logging.warning("Tornado failed to load message from memcached when delivering!")
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message = Message.objects.select_related().get(id=message_id)
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cache_save_message(message)
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for user_profile_id, user_profile in user_profiles.iteritems():
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if user_profile:
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continue
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if not settings.TEST_SUITE:
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logging.warning("Tornado failed to load user profile from memcached when delivering message!")
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user_profile = UserProfile.objects.select_related().get(id=user_profile_id)
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user_profiles[user_profile_id] = user_profile
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cache_save_user_profile(user_profile)
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return message, user_profiles
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def receiver_is_idle(user_profile, realm_presences):
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# If a user has no message-receiving event queues, they've got no open zulip
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# session so we notify them
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all_client_descriptors = get_client_descriptors_for_user(user_profile.id)
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message_event_queues = [client for client in all_client_descriptors if client.accepts_event_type('message')]
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off_zulip = len(message_event_queues) == 0
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# It's possible a recipient is not in the realm of a sender. We don't have
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# presence information in this case (and it's hard to get without an additional
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# db query) so we simply don't try to guess if this cross-realm recipient
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# has been idle for too long
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if realm_presences is None or not user_profile.email in realm_presences:
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return off_zulip
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# If the most recent online status from a user is >1hr in the past, we notify
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# them regardless of whether or not they have an open window
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user_presence = realm_presences[user_profile.email]
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idle_too_long = False
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newest = None
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for client, status in user_presence.iteritems():
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if newest is None or status['timestamp'] > newest['timestamp']:
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newest = status
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update_time = timestamp_to_datetime(newest['timestamp'])
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if now() - update_time > datetime.timedelta(hours=NOTIFY_AFTER_IDLE_HOURS):
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idle_too_long = True
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return off_zulip or idle_too_long
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def process_new_message(data):
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message, user_profiles = cache_load_message_data(data['message'],
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data['users'])
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realm_presences = data['presences']
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message_dict_markdown = message.to_dict(True)
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message_dict_no_markdown = message.to_dict(False)
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# To remove duplicate clients: Maps queue ID to (Client, flags)
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send_to_clients = dict()
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if 'stream_name' in data and not data.get("invite_only"):
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for client in get_client_descriptors_for_realm_all_streams(data['realm_id']):
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send_to_clients[client.event_queue.id] = (client, None)
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for user_data in data['users']:
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user_profile_id = user_data['id']
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user_profile = user_profiles[user_data['id']]
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flags = user_data.get('flags', [])
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for client in get_client_descriptors_for_user(user_profile_id):
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send_to_clients[client.event_queue.id] = (client, flags)
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# If the recipient was offline and the message was a single or group PM to him
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# or she was @-notified potentially notify more immediately
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received_pm = message.recipient.type in (Recipient.PERSONAL, Recipient.HUDDLE) and \
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user_profile_id != message.sender.id
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mentioned = 'mentioned' in flags
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if (received_pm or mentioned) and receiver_is_idle(user_profile, realm_presences):
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if receives_offline_notifications(user_profile):
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event = build_offline_notification_event(user_profile_id, message.id)
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# We require RabbitMQ to do this, as we can't call the email handler
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# from the Tornado process. So if there's no rabbitmq support do nothing
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queue_json_publish("missedmessage_emails", event, lambda event: None)
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for client, flags in send_to_clients.itervalues():
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if not client.accepts_event_type('message'):
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continue
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# The below prevents (Zephyr) mirroring loops.
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if ('mirror' in message.sending_client.name and
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message.sending_client == client.client_type):
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continue
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if client.apply_markdown:
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message_dict = message_dict_markdown
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else:
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message_dict = message_dict_no_markdown
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# Make sure Zephyr mirroring bots know whether stream is invite-only
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if "mirror" in client.client_type.name and data.get("invite_only"):
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message_dict = message_dict.copy()
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message_dict["invite_only_stream"] = True
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event = dict(type='message', message=message_dict, flags=flags)
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client.add_event(event)
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def process_event(data):
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event = data['event']
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for user_profile_id in data['users']:
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for client in get_client_descriptors_for_user(user_profile_id):
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if client.accepts_event_type(event['type']):
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client.add_event(event.copy())
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def process_notification(data):
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if 'type' not in data:
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# Generic event that doesn't need special handling
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process_event(data)
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elif data['type'] == 'new_message':
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process_new_message(data)
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elif data['type'] == 'pointer_update':
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update_pointer(data['user'], data['new_pointer'])
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else:
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raise JsonableError('bad notification type ' + data['type'])
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# Runs in the Django process to send a notification to Tornado.
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#
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# We use JSON rather than bare form parameters, so that we can represent
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# different types and for compatibility with non-HTTP transports.
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def send_notification_http(data):
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if settings.TORNADO_SERVER and not settings.RUNNING_INSIDE_TORNADO:
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requests.post(settings.TORNADO_SERVER + '/notify_tornado', data=dict(
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data = ujson.dumps(data),
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secret = settings.SHARED_SECRET))
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else:
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process_notification(data)
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def send_notification(data):
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return queue_json_publish("notify_tornado", data, send_notification_http)
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