mirror of https://github.com/zulip/zulip.git
416 lines
20 KiB
Python
416 lines
20 KiB
Python
# See http://zulip.readthedocs.io/en/latest/events-system.html for
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# high-level documentation on how this system works.
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from __future__ import absolute_import
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from __future__ import print_function
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import copy
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import six
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import ujson
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from django.utils.translation import ugettext as _
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from django.conf import settings
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from importlib import import_module
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from six.moves import filter, map
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from typing import (
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Any, Dict, Iterable, Optional, Sequence, Set, Text, Tuple
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)
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session_engine = import_module(settings.SESSION_ENGINE)
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from zerver.lib.alert_words import user_alert_words
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from zerver.lib.attachments import user_attachments
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from zerver.lib.avatar import get_avatar_url
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from zerver.lib.narrow import check_supported_events_narrow_filter
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from zerver.lib.realm_icon import realm_icon_url
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from zerver.lib.request import JsonableError
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from zerver.lib.actions import validate_user_access_to_subscribers_helper, \
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do_get_streams, get_default_streams_for_realm, \
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gather_subscriptions_helper, get_realm_aliases, \
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get_status_dict, streams_to_dicts_sorted
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from zerver.tornado.event_queue import request_event_queue, get_user_events
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from zerver.models import Client, Message, UserProfile, \
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get_user_profile_by_email, get_active_user_dicts_in_realm, \
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realm_filters_for_realm, get_owned_bot_dicts
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def get_realm_user_dicts(user_profile):
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# type: (UserProfile) -> List[Dict[str, Text]]
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def avatar_url(userdict):
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# type: (Dict[str, Any]) -> Text
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return get_avatar_url(userdict['avatar_source'],
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userdict['email'],
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userdict['avatar_version'],
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)
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return [{'email': userdict['email'],
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'user_id': userdict['id'],
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'avatar_url': avatar_url(userdict),
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'is_admin': userdict['is_realm_admin'],
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'is_bot': userdict['is_bot'],
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'full_name': userdict['full_name']}
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for userdict in get_active_user_dicts_in_realm(user_profile.realm)]
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# Fetch initial data. When event_types is not specified, clients want
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# all event types. Whenever you add new code to this function, you
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# should also add corresponding events for changes in the data
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# structures and new code to apply_events (and add a test in EventsRegisterTest).
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def fetch_initial_state_data(user_profile, event_types, queue_id,
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include_subscribers=True):
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# type: (UserProfile, Optional[Iterable[str]], str, bool) -> Dict[str, Any]
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state = {'queue_id': queue_id} # type: Dict[str, Any]
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if event_types is None:
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want = lambda msg_type: True
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else:
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want = set(event_types).__contains__
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if want('alert_words'):
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state['alert_words'] = user_alert_words(user_profile)
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if want('attachments'):
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state['attachments'] = user_attachments(user_profile)
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if want('message'):
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# The client should use get_old_messages() to fetch messages
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# starting with the max_message_id. They will get messages
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# newer than that ID via get_events()
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messages = Message.objects.filter(usermessage__user_profile=user_profile).order_by('-id')[:1]
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if messages:
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state['max_message_id'] = messages[0].id
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else:
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state['max_message_id'] = -1
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if want('muted_topics'):
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state['muted_topics'] = ujson.loads(user_profile.muted_topics)
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if want('pointer'):
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state['pointer'] = user_profile.pointer
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if want('presence'):
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state['presences'] = get_status_dict(user_profile)
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if want('realm'):
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state['realm_name'] = user_profile.realm.name
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state['realm_restricted_to_domain'] = user_profile.realm.restricted_to_domain
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state['realm_invite_required'] = user_profile.realm.invite_required
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state['realm_invite_by_admins_only'] = user_profile.realm.invite_by_admins_only
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state['realm_authentication_methods'] = user_profile.realm.authentication_methods_dict()
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state['realm_create_stream_by_admins_only'] = user_profile.realm.create_stream_by_admins_only
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state['realm_add_emoji_by_admins_only'] = user_profile.realm.add_emoji_by_admins_only
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state['realm_allow_message_editing'] = user_profile.realm.allow_message_editing
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state['realm_message_content_edit_limit_seconds'] = user_profile.realm.message_content_edit_limit_seconds
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state['realm_default_language'] = user_profile.realm.default_language
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state['realm_waiting_period_threshold'] = user_profile.realm.waiting_period_threshold
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state['realm_icon_url'] = realm_icon_url(user_profile.realm)
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state['realm_icon_source'] = user_profile.realm.icon_source
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if want('realm_domain'):
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state['realm_domain'] = user_profile.realm.domain
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if want('realm_domains'):
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state['realm_domains'] = get_realm_aliases(user_profile.realm)
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if want('realm_emoji'):
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state['realm_emoji'] = user_profile.realm.get_emoji()
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if want('realm_filters'):
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state['realm_filters'] = realm_filters_for_realm(user_profile.realm_id)
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if want('realm_user'):
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state['realm_users'] = get_realm_user_dicts(user_profile)
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if want('realm_bot'):
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state['realm_bots'] = get_owned_bot_dicts(user_profile)
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if want('referral'):
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state['referrals'] = {'granted': user_profile.invites_granted,
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'used': user_profile.invites_used}
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if want('subscription'):
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subscriptions, unsubscribed, never_subscribed = gather_subscriptions_helper(
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user_profile, include_subscribers=include_subscribers)
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state['subscriptions'] = subscriptions
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state['unsubscribed'] = unsubscribed
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state['never_subscribed'] = never_subscribed
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if want('update_message_flags'):
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# There's no initial data for message flag updates, client will
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# get any updates during a session from get_events()
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pass
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if want('stream'):
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state['streams'] = do_get_streams(user_profile)
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if want('default_streams'):
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state['realm_default_streams'] = streams_to_dicts_sorted(get_default_streams_for_realm(user_profile.realm))
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if want('update_display_settings'):
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state['twenty_four_hour_time'] = user_profile.twenty_four_hour_time
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state['left_side_userlist'] = user_profile.left_side_userlist
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default_language = user_profile.default_language
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state['default_language'] = default_language
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if want('update_global_notifications'):
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state['enable_stream_desktop_notifications'] = user_profile.enable_stream_desktop_notifications
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state['enable_stream_sounds'] = user_profile.enable_stream_sounds
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state['enable_desktop_notifications'] = user_profile.enable_desktop_notifications
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state['enable_sounds'] = user_profile.enable_sounds
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state['enable_offline_email_notifications'] = user_profile.enable_offline_email_notifications
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state['enable_offline_push_notifications'] = user_profile.enable_offline_push_notifications
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state['enable_online_push_notifications'] = user_profile.enable_online_push_notifications
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state['enable_digest_emails'] = user_profile.enable_digest_emails
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return state
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def apply_events(state, events, user_profile, include_subscribers=True):
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# type: (Dict[str, Any], Iterable[Dict[str, Any]], UserProfile, bool) -> None
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for event in events:
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apply_event(state, event, user_profile, include_subscribers)
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def apply_event(state, event, user_profile, include_subscribers):
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# type: (Dict[str, Any], Dict[str, Any], UserProfile, bool) -> None
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if event['type'] == "message":
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state['max_message_id'] = max(state['max_message_id'], event['message']['id'])
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elif event['type'] == "pointer":
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state['pointer'] = max(state['pointer'], event['pointer'])
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elif event['type'] == "realm_user":
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person = event['person']
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def our_person(p):
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# type: (Dict[str, Any]) -> bool
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return p['user_id'] == person['user_id']
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if event['op'] == "add":
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state['realm_users'].append(person)
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elif event['op'] == "remove":
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state['realm_users'] = [user for user in state['realm_users'] if not our_person(user)]
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elif event['op'] == 'update':
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for p in state['realm_users']:
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if our_person(p):
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# In the unlikely event that the current user
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# just changed to/from being an admin, we need
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# to add/remove the data on all bots in the
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# realm. This is ugly and probably better
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# solved by removing the all-realm-bots data
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# given to admin users from this flow.
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if ('is_admin' in person and 'realm_bots' in state and
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user_profile.email == person['email']):
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if p['is_admin'] and not person['is_admin']:
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state['realm_bots'] = []
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if not p['is_admin'] and person['is_admin']:
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state['realm_bots'] = get_owned_bot_dicts(user_profile)
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# Now update the person
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p.update(person)
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elif event['type'] == 'realm_bot':
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if event['op'] == 'add':
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state['realm_bots'].append(event['bot'])
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if event['op'] == 'remove':
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email = event['bot']['email']
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state['realm_bots'] = [b for b in state['realm_bots'] if b['email'] != email]
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if event['op'] == 'update':
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for bot in state['realm_bots']:
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if bot['email'] == event['bot']['email']:
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bot.update(event['bot'])
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elif event['type'] == 'stream':
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if event['op'] == 'create':
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for stream in event['streams']:
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if not stream['invite_only']:
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stream_data = copy.deepcopy(stream)
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if include_subscribers:
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stream_data['subscribers'] = []
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# Add stream to never_subscribed (if not invite_only)
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state['never_subscribed'].append(stream_data)
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if event['op'] == 'delete':
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deleted_stream_ids = {stream['stream_id'] for stream in event['streams']}
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state['streams'] = [s for s in state['streams'] if s['stream_id'] not in deleted_stream_ids]
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state['never_subscribed'] = [stream for stream in state['never_subscribed'] if
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stream['stream_id'] not in deleted_stream_ids]
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if event['op'] == 'update':
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# For legacy reasons, we call stream data 'subscriptions' in
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# the state var here, for the benefit of the JS code.
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for obj in state['subscriptions']:
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if obj['name'].lower() == event['name'].lower():
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obj[event['property']] = event['value']
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# Also update the pure streams data
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for stream in state['streams']:
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if stream['name'].lower() == event['name'].lower():
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prop = event['property']
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if prop in stream:
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stream[prop] = event['value']
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elif event['op'] == "occupy":
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state['streams'] += event['streams']
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elif event['op'] == "vacate":
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stream_ids = [s["stream_id"] for s in event['streams']]
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state['streams'] = [s for s in state['streams'] if s["stream_id"] not in stream_ids]
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elif event['type'] == 'default_streams':
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state['realm_default_streams'] = event['default_streams']
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elif event['type'] == 'realm':
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if event['op'] == "update":
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field = 'realm_' + event['property']
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state[field] = event['value']
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elif event['op'] == "update_dict":
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for key, value in event['data'].items():
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state['realm_' + key] = value
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elif event['type'] == "subscription":
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if not include_subscribers and event['op'] in ['peer_add', 'peer_remove']:
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return
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if event['op'] in ["add"]:
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if include_subscribers:
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# Convert the emails to user_profile IDs since that's what register() returns
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# TODO: Clean up this situation by making the event also have IDs
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for item in event["subscriptions"]:
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item["subscribers"] = [get_user_profile_by_email(email).id for email in item["subscribers"]]
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else:
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# Avoid letting 'subscribers' entries end up in the list
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for i, sub in enumerate(event['subscriptions']):
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event['subscriptions'][i] = copy.deepcopy(event['subscriptions'][i])
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del event['subscriptions'][i]['subscribers']
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def name(sub):
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# type: (Dict[str, Any]) -> Text
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return sub['name'].lower()
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if event['op'] == "add":
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added_names = set(map(name, event["subscriptions"]))
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was_added = lambda s: name(s) in added_names
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# add the new subscriptions
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state['subscriptions'] += event['subscriptions']
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# remove them from unsubscribed if they had been there
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state['unsubscribed'] = [s for s in state['unsubscribed'] if not was_added(s)]
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# remove them from never_subscribed if they had been there
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state['never_subscribed'] = [s for s in state['never_subscribed'] if not was_added(s)]
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elif event['op'] == "remove":
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removed_names = set(map(name, event["subscriptions"]))
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was_removed = lambda s: name(s) in removed_names
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# Find the subs we are affecting.
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removed_subs = list(filter(was_removed, state['subscriptions']))
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# Remove our user from the subscribers of the removed subscriptions.
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if include_subscribers:
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for sub in removed_subs:
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sub['subscribers'] = [id for id in sub['subscribers'] if id != user_profile.id]
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# We must effectively copy the removed subscriptions from subscriptions to
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# unsubscribe, since we only have the name in our data structure.
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state['unsubscribed'] += removed_subs
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# Now filter out the removed subscriptions from subscriptions.
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state['subscriptions'] = [s for s in state['subscriptions'] if not was_removed(s)]
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elif event['op'] == 'update':
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for sub in state['subscriptions']:
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if sub['name'].lower() == event['name'].lower():
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sub[event['property']] = event['value']
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elif event['op'] == 'peer_add':
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user_id = event['user_id']
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for sub in state['subscriptions']:
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if (sub['name'] in event['subscriptions'] and
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user_id not in sub['subscribers']):
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sub['subscribers'].append(user_id)
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for sub in state['never_subscribed']:
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if (sub['name'] in event['subscriptions'] and
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user_id not in sub['subscribers']):
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sub['subscribers'].append(user_id)
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elif event['op'] == 'peer_remove':
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user_id = event['user_id']
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for sub in state['subscriptions']:
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if (sub['name'] in event['subscriptions'] and
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user_id in sub['subscribers']):
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sub['subscribers'].remove(user_id)
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elif event['type'] == "presence":
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state['presences'][event['email']] = event['presence']
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elif event['type'] == "update_message":
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# The client will get the updated message directly
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pass
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elif event['type'] == "reaction":
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# The client will get the message with the reactions directly
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pass
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elif event['type'] == "referral":
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state['referrals'] = event['referrals']
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elif event['type'] == "update_message_flags":
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# The client will get the message with the updated flags directly
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pass
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elif event['type'] == "realm_domains":
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if event['op'] == 'add':
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state['realm_domains'].append(event['alias'])
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elif event['op'] == 'change':
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for realm_domain in state['realm_domains']:
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if realm_domain['domain'] == event['alias']['domain']:
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realm_domain['allow_subdomains'] = event['alias']['allow_subdomains']
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elif event['op'] == 'remove':
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state['realm_domains'] = [alias for alias in state['realm_domains'] if alias['domain'] != event['domain']]
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elif event['type'] == "realm_emoji":
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state['realm_emoji'] = event['realm_emoji']
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elif event['type'] == "alert_words":
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state['alert_words'] = event['alert_words']
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elif event['type'] == "muted_topics":
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state['muted_topics'] = event["muted_topics"]
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elif event['type'] == "realm_filters":
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state['realm_filters'] = event["realm_filters"]
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elif event['type'] == "update_display_settings":
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if event['setting_name'] == "twenty_four_hour_time":
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state['twenty_four_hour_time'] = event["setting"]
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if event['setting_name'] == 'left_side_userlist':
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state['left_side_userlist'] = event["setting"]
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elif event['type'] == "update_global_notifications":
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if event['notification_name'] == "enable_stream_desktop_notifications":
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state['enable_stream_desktop_notifications'] = event['setting']
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elif event['notification_name'] == "enable_stream_sounds":
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state['enable_stream_sounds'] = event['setting']
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elif event['notification_name'] == "enable_desktop_notifications":
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state['enable_desktop_notifications'] = event['setting']
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elif event['notification_name'] == "enable_sounds":
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state['enable_sounds'] = event['setting']
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elif event['notification_name'] == "enable_offline_email_notifications":
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state['enable_offline_email_notifications'] = event['setting']
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elif event['notification_name'] == "enable_offline_push_notifications":
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state['enable_offline_push_notifications'] = event['setting']
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elif event['notification_name'] == "enable_online_push_notifications":
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state['enable_online_push_notifications'] = event['setting']
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elif event['notification_name'] == "enable_digest_emails":
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state['enable_digest_emails'] = event['setting']
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else:
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raise ValueError("Unexpected event type %s" % (event['type'],))
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def do_events_register(user_profile, user_client, apply_markdown=True,
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event_types=None, queue_lifespan_secs=0, all_public_streams=False,
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include_subscribers=True, narrow=[]):
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# type: (UserProfile, Client, bool, Optional[Iterable[str]], int, bool, bool, Iterable[Sequence[Text]]) -> Dict[str, Any]
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# Technically we don't need to check this here because
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# build_narrow_filter will check it, but it's nicer from an error
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# handling perspective to do it before contacting Tornado
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check_supported_events_narrow_filter(narrow)
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queue_id = request_event_queue(user_profile, user_client, apply_markdown,
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queue_lifespan_secs, event_types, all_public_streams,
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narrow=narrow)
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if queue_id is None:
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raise JsonableError(_("Could not allocate event queue"))
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if event_types is not None:
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event_types_set = set(event_types) # type: Optional[Set[str]]
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else:
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event_types_set = None
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ret = fetch_initial_state_data(user_profile, event_types_set, queue_id,
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include_subscribers=include_subscribers)
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# Apply events that came in while we were fetching initial data
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events = get_user_events(user_profile, queue_id, -1)
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apply_events(ret, events, user_profile, include_subscribers=include_subscribers)
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if events:
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ret['last_event_id'] = events[-1]['id']
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else:
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ret['last_event_id'] = -1
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return ret
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