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3c6cc3d454
We're about to have multiple post-processing stages for building message dictionaries. Rather than having individual "hydration" methods remove intermediate values, we just wait until the end. This decouples the hyrdration steps. The potentional problem here is that we may have a field like sender_is_mirror_dummy that isn't part of the final payload, but we need it for calculating display recipients and avatars. We don't want to delete it too early from the objects.
742 lines
26 KiB
Python
742 lines
26 KiB
Python
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import datetime
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import ujson
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import zlib
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from django.utils.translation import ugettext as _
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from django.utils.timezone import now as timezone_now
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from six import binary_type
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from zerver.lib.avatar import get_avatar_field
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import zerver.lib.bugdown as bugdown
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from zerver.lib.cache import cache_with_key, to_dict_cache_key
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from zerver.lib.request import JsonableError
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from zerver.lib.str_utils import force_bytes, dict_with_str_keys
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from zerver.lib.timestamp import datetime_to_timestamp
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from zerver.lib.topic_mutes import (
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build_topic_mute_checker,
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topic_is_muted,
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)
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from zerver.models import (
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get_display_recipient_by_id,
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get_user_profile_by_id,
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query_for_ids,
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Message,
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Realm,
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Recipient,
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Stream,
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Subscription,
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UserProfile,
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UserMessage,
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Reaction
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)
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from typing import Any, Dict, List, Optional, Set, Tuple, Text, Union
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from mypy_extensions import TypedDict
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RealmAlertWords = Dict[int, List[Text]]
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UnreadMessagesResult = TypedDict('UnreadMessagesResult', {
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'pms': List[Dict[str, Any]],
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'streams': List[Dict[str, Any]],
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'huddles': List[Dict[str, Any]],
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'mentions': List[int],
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'count': int,
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})
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MAX_UNREAD_MESSAGES = 5000
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def extract_message_dict(message_bytes):
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# type: (binary_type) -> Dict[str, Any]
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return dict_with_str_keys(ujson.loads(zlib.decompress(message_bytes).decode("utf-8")))
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def stringify_message_dict(message_dict):
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# type: (Dict[str, Any]) -> binary_type
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return zlib.compress(force_bytes(ujson.dumps(message_dict)))
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def message_to_dict(message, apply_markdown):
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# type: (Message, bool) -> Dict[str, Any]
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json = message_to_dict_json(message, apply_markdown)
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obj = extract_message_dict(json)
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MessageDict.post_process_dicts([obj])
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return obj
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@cache_with_key(to_dict_cache_key, timeout=3600*24)
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def message_to_dict_json(message, apply_markdown):
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# type: (Message, bool) -> binary_type
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return MessageDict.to_dict_uncached(message, apply_markdown)
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class MessageDict(object):
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@staticmethod
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def post_process_dicts(objs):
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# type: (List[Dict[str, Any]]) -> None
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MessageDict.bulk_hydrate_sender_info(objs)
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for obj in objs:
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MessageDict.hydrate_recipient_info(obj)
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del obj['raw_display_recipient']
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del obj['recipient_type']
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del obj['recipient_type_id']
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del obj['sender_is_mirror_dummy']
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@staticmethod
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def to_dict_uncached(message, apply_markdown):
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# type: (Message, bool) -> binary_type
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dct = MessageDict.to_dict_uncached_helper(message, apply_markdown)
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return stringify_message_dict(dct)
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@staticmethod
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def to_dict_uncached_helper(message, apply_markdown):
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# type: (Message, bool) -> Dict[str, Any]
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return MessageDict.build_message_dict(
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apply_markdown = apply_markdown,
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message = message,
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message_id = message.id,
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last_edit_time = message.last_edit_time,
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edit_history = message.edit_history,
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content = message.content,
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subject = message.subject,
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pub_date = message.pub_date,
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rendered_content = message.rendered_content,
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rendered_content_version = message.rendered_content_version,
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sender_id = message.sender.id,
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sender_email = message.sender.email,
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sender_realm_id = message.sender.realm_id,
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sender_realm_str = message.sender.realm.string_id,
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sender_avatar_source = message.sender.avatar_source,
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sender_avatar_version = message.sender.avatar_version,
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sender_is_mirror_dummy = message.sender.is_mirror_dummy,
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sending_client_name = message.sending_client.name,
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recipient_id = message.recipient.id,
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recipient_type = message.recipient.type,
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recipient_type_id = message.recipient.type_id,
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reactions = Reaction.get_raw_db_rows([message.id])
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)
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@staticmethod
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def build_dict_from_raw_db_row(row, apply_markdown):
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# type: (Dict[str, Any], bool) -> Dict[str, Any]
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'''
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row is a row from a .values() call, and it needs to have
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all the relevant fields populated
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'''
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return MessageDict.build_message_dict(
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apply_markdown = apply_markdown,
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message = None,
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message_id = row['id'],
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last_edit_time = row['last_edit_time'],
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edit_history = row['edit_history'],
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content = row['content'],
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subject = row['subject'],
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pub_date = row['pub_date'],
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rendered_content = row['rendered_content'],
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rendered_content_version = row['rendered_content_version'],
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sender_id = row['sender_id'],
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sender_email = row['sender__email'],
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sender_realm_id = row['sender__realm__id'],
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sender_realm_str = row['sender__realm__string_id'],
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sender_avatar_source = row['sender__avatar_source'],
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sender_avatar_version = row['sender__avatar_version'],
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sender_is_mirror_dummy = row['sender__is_mirror_dummy'],
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sending_client_name = row['sending_client__name'],
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recipient_id = row['recipient_id'],
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recipient_type = row['recipient__type'],
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recipient_type_id = row['recipient__type_id'],
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reactions=row['reactions']
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)
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@staticmethod
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def build_message_dict(
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apply_markdown,
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message,
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message_id,
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last_edit_time,
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edit_history,
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content,
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subject,
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pub_date,
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rendered_content,
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rendered_content_version,
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sender_id,
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sender_email,
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sender_realm_id,
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sender_realm_str,
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sender_avatar_source,
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sender_avatar_version,
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sender_is_mirror_dummy,
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sending_client_name,
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recipient_id,
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recipient_type,
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recipient_type_id,
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reactions
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):
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# type: (bool, Optional[Message], int, Optional[datetime.datetime], Optional[Text], Text, Text, datetime.datetime, Optional[Text], Optional[int], int, Text, int, Text, Text, int, bool, Text, int, int, int, List[Dict[str, Any]]) -> Dict[str, Any]
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# TODO: Make client_gravatar configurable.
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client_gravatar = False
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avatar_url = get_avatar_field(
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user_id=sender_id,
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realm_id=sender_realm_id,
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email=sender_email,
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avatar_source=sender_avatar_source,
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avatar_version=sender_avatar_version,
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medium=False,
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client_gravatar=client_gravatar,
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)
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obj = dict(
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id = message_id,
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sender_email = sender_email,
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sender_realm_str = sender_realm_str,
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sender_id = sender_id,
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recipient_type_id = recipient_type_id,
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recipient_type = recipient_type,
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recipient_id = recipient_id,
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subject = subject,
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timestamp = datetime_to_timestamp(pub_date),
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avatar_url = avatar_url,
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client = sending_client_name)
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obj['raw_display_recipient'] = get_display_recipient_by_id(
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recipient_id,
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recipient_type,
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recipient_type_id
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)
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obj['sender_is_mirror_dummy'] = sender_is_mirror_dummy
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obj['subject_links'] = bugdown.subject_links(sender_realm_id, subject)
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if last_edit_time is not None:
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obj['last_edit_timestamp'] = datetime_to_timestamp(last_edit_time)
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assert edit_history is not None
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obj['edit_history'] = ujson.loads(edit_history)
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if apply_markdown:
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if Message.need_to_render_content(rendered_content, rendered_content_version, bugdown.version):
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if message is None:
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# We really shouldn't be rendering objects in this method, but there is
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# a scenario where we upgrade the version of bugdown and fail to run
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# management commands to re-render historical messages, and then we
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# need to have side effects. This method is optimized to not need full
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# blown ORM objects, but the bugdown renderer is unfortunately highly
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# coupled to Message, and we also need to persist the new rendered content.
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# If we don't have a message object passed in, we get one here. The cost
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# of going to the DB here should be overshadowed by the cost of rendering
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# and updating the row.
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# TODO: see #1379 to eliminate bugdown dependencies
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message = Message.objects.select_related().get(id=message_id)
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assert message is not None # Hint for mypy.
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# It's unfortunate that we need to have side effects on the message
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# in some cases.
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rendered_content = render_markdown(message, content, realm=message.get_realm())
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message.rendered_content = rendered_content
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message.rendered_content_version = bugdown.version
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message.save_rendered_content()
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if rendered_content is not None:
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obj['content'] = rendered_content
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else:
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obj['content'] = u'<p>[Zulip note: Sorry, we could not understand the formatting of your message]</p>'
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obj['content_type'] = 'text/html'
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else:
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obj['content'] = content
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obj['content_type'] = 'text/x-markdown'
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if rendered_content is not None:
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obj['is_me_message'] = Message.is_status_message(content, rendered_content)
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else:
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obj['is_me_message'] = False
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obj['reactions'] = [ReactionDict.build_dict_from_raw_db_row(reaction)
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for reaction in reactions]
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return obj
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@staticmethod
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def bulk_hydrate_sender_info(objs):
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# type: (List[Dict[str, Any]]) -> None
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sender_ids = list({
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obj['sender_id']
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for obj in objs
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})
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if not sender_ids:
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return
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query = UserProfile.objects.values(
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'id',
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'full_name',
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'short_name',
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)
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rows = query_for_ids(query, sender_ids, 'id')
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sender_dict = {
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row['id']: row
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for row in rows
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}
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for obj in objs:
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sender_id = obj['sender_id']
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user_row = sender_dict[sender_id]
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obj['sender_full_name'] = user_row['full_name']
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obj['sender_short_name'] = user_row['short_name']
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@staticmethod
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def hydrate_recipient_info(obj):
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# type: (Dict[str, Any]) -> None
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'''
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This method hyrdrates recipient info with things
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like full names and emails of senders. Eventually
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our clients should be able to hyrdrate these fields
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themselves with info they already have on users.
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'''
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display_recipient = obj['raw_display_recipient']
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recipient_type = obj['recipient_type']
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recipient_type_id = obj['recipient_type_id']
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sender_is_mirror_dummy = obj['sender_is_mirror_dummy']
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sender_email = obj['sender_email']
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sender_full_name = obj['sender_full_name']
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sender_short_name = obj['sender_short_name']
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sender_id = obj['sender_id']
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if recipient_type == Recipient.STREAM:
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display_type = "stream"
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elif recipient_type in (Recipient.HUDDLE, Recipient.PERSONAL):
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assert not isinstance(display_recipient, Text)
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display_type = "private"
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if len(display_recipient) == 1:
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# add the sender in if this isn't a message between
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# someone and themself, preserving ordering
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recip = {'email': sender_email,
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'full_name': sender_full_name,
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'short_name': sender_short_name,
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'id': sender_id,
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'is_mirror_dummy': sender_is_mirror_dummy}
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if recip['email'] < display_recipient[0]['email']:
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display_recipient = [recip, display_recipient[0]]
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elif recip['email'] > display_recipient[0]['email']:
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display_recipient = [display_recipient[0], recip]
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else:
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raise AssertionError("Invalid recipient type %s" % (recipient_type,))
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obj['display_recipient'] = display_recipient
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obj['type'] = display_type
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if obj['type'] == 'stream':
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obj['stream_id'] = recipient_type_id
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class ReactionDict(object):
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@staticmethod
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def build_dict_from_raw_db_row(row):
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# type: (Dict[str, Any]) -> Dict[str, Any]
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return {'emoji_name': row['emoji_name'],
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'emoji_code': row['emoji_code'],
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'reaction_type': row['reaction_type'],
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'user': {'email': row['user_profile__email'],
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'id': row['user_profile__id'],
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'full_name': row['user_profile__full_name']}}
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def access_message(user_profile, message_id):
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# type: (UserProfile, int) -> Tuple[Message, UserMessage]
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"""You can access a message by ID in our APIs that either:
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(1) You received or have previously accessed via starring
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(aka have a UserMessage row for).
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(2) Was sent to a public stream in your realm.
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We produce consistent, boring error messages to avoid leaking any
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information from a security perspective.
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"""
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try:
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message = Message.objects.select_related().get(id=message_id)
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except Message.DoesNotExist:
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raise JsonableError(_("Invalid message(s)"))
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try:
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user_message = UserMessage.objects.select_related().get(user_profile=user_profile,
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message=message)
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except UserMessage.DoesNotExist:
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user_message = None
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if user_message is None:
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if message.recipient.type != Recipient.STREAM:
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# You can't access private messages you didn't receive
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raise JsonableError(_("Invalid message(s)"))
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stream = Stream.objects.get(id=message.recipient.type_id)
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if not stream.is_public():
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# You can't access messages sent to invite-only streams
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# that you didn't receive
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raise JsonableError(_("Invalid message(s)"))
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# So the message is to a public stream
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if stream.realm != user_profile.realm:
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# You can't access public stream messages in other realms
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raise JsonableError(_("Invalid message(s)"))
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# Otherwise, the message must have been sent to a public
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# stream in your realm, so return the message, user_message pair
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return (message, user_message)
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def render_markdown(message, content, realm=None, realm_alert_words=None, user_ids=None):
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# type: (Message, Text, Optional[Realm], Optional[RealmAlertWords], Optional[Set[int]]) -> Text
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"""Return HTML for given markdown. Bugdown may add properties to the
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message object such as `mentions_user_ids` and `mentions_wildcard`.
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These are only on this Django object and are not saved in the
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database.
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"""
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if user_ids is None:
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message_user_ids = set() # type: Set[int]
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else:
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message_user_ids = user_ids
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if message is not None:
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message.mentions_wildcard = False
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message.mentions_user_ids = set()
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message.alert_words = set()
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message.links_for_preview = set()
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if realm is None:
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realm = message.get_realm()
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possible_words = set() # type: Set[Text]
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if realm_alert_words is not None:
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for user_id, words in realm_alert_words.items():
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if user_id in message_user_ids:
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possible_words.update(set(words))
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if message is None:
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# If we don't have a message, then we are in the compose preview
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# codepath, so we know we are dealing with a human.
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sent_by_bot = False
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else:
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sent_by_bot = get_user_profile_by_id(message.sender_id).is_bot
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# DO MAIN WORK HERE -- call bugdown to convert
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rendered_content = bugdown.convert(content, message=message, message_realm=realm,
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possible_words=possible_words,
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sent_by_bot=sent_by_bot)
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if message is not None:
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message.user_ids_with_alert_words = set()
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if realm_alert_words is not None:
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for user_id, words in realm_alert_words.items():
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if user_id in message_user_ids:
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if set(words).intersection(message.alert_words):
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message.user_ids_with_alert_words.add(user_id)
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return rendered_content
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def huddle_users(recipient_id):
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# type: (int) -> str
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display_recipient = get_display_recipient_by_id(recipient_id,
|
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Recipient.HUDDLE,
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None) # type: Union[Text, List[Dict[str, Any]]]
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# Text is for streams.
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assert not isinstance(display_recipient, Text)
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user_ids = [obj['id'] for obj in display_recipient] # type: List[int]
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user_ids = sorted(user_ids)
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return ','.join(str(uid) for uid in user_ids)
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|
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def aggregate_message_dict(input_dict, lookup_fields, collect_senders):
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# type: (Dict[int, Dict[str, Any]], List[str], bool) -> List[Dict[str, Any]]
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lookup_dict = dict() # type: Dict[Any, Dict]
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'''
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A concrete example might help explain the inputs here:
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input_dict = {
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1002: dict(stream_id=5, topic='foo', sender_id=40),
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1003: dict(stream_id=5, topic='foo', sender_id=41),
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1004: dict(stream_id=6, topic='baz', sender_id=99),
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}
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lookup_fields = ['stream_id', 'topic']
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The first time through the loop:
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attribute_dict = dict(stream_id=5, topic='foo', sender_id=40)
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lookup_dict = (5, 'foo')
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lookup_dict = {
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(5, 'foo'): dict(stream_id=5, topic='foo',
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unread_message_ids=[1002, 1003],
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sender_ids=[40, 41],
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),
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...
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}
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result = [
|
|
dict(stream_id=5, topic='foo',
|
|
unread_message_ids=[1002, 1003],
|
|
sender_ids=[40, 41],
|
|
),
|
|
...
|
|
]
|
|
'''
|
|
|
|
for message_id, attribute_dict in input_dict.items():
|
|
lookup_key = tuple([attribute_dict[f] for f in lookup_fields])
|
|
if lookup_key not in lookup_dict:
|
|
obj = {}
|
|
for f in lookup_fields:
|
|
obj[f] = attribute_dict[f]
|
|
obj['unread_message_ids'] = []
|
|
if collect_senders:
|
|
obj['sender_ids'] = set()
|
|
lookup_dict[lookup_key] = obj
|
|
|
|
bucket = lookup_dict[lookup_key]
|
|
bucket['unread_message_ids'].append(message_id)
|
|
if collect_senders:
|
|
bucket['sender_ids'].add(attribute_dict['sender_id'])
|
|
|
|
for dct in lookup_dict.values():
|
|
dct['unread_message_ids'].sort()
|
|
if collect_senders:
|
|
dct['sender_ids'] = sorted(list(dct['sender_ids']))
|
|
|
|
sorted_keys = sorted(lookup_dict.keys())
|
|
|
|
return [lookup_dict[k] for k in sorted_keys]
|
|
|
|
def get_inactive_recipient_ids(user_profile):
|
|
# type: (UserProfile) -> List[int]
|
|
rows = Subscription.objects.filter(
|
|
user_profile=user_profile,
|
|
recipient__type=Recipient.STREAM,
|
|
active=False,
|
|
).values(
|
|
'recipient_id'
|
|
)
|
|
inactive_recipient_ids = [
|
|
row['recipient_id']
|
|
for row in rows]
|
|
return inactive_recipient_ids
|
|
|
|
def get_muted_stream_ids(user_profile):
|
|
# type: (UserProfile) -> List[int]
|
|
rows = Subscription.objects.filter(
|
|
user_profile=user_profile,
|
|
recipient__type=Recipient.STREAM,
|
|
active=True,
|
|
in_home_view=False,
|
|
).values(
|
|
'recipient__type_id'
|
|
)
|
|
muted_stream_ids = [
|
|
row['recipient__type_id']
|
|
for row in rows]
|
|
return muted_stream_ids
|
|
|
|
def get_unread_message_ids_per_recipient(user_profile):
|
|
# type: (UserProfile) -> UnreadMessagesResult
|
|
raw_unread_data = get_raw_unread_data(user_profile)
|
|
aggregated_data = aggregate_unread_data(raw_unread_data)
|
|
return aggregated_data
|
|
|
|
def get_raw_unread_data(user_profile):
|
|
# type: (UserProfile) -> Dict[str, Any]
|
|
|
|
excluded_recipient_ids = get_inactive_recipient_ids(user_profile)
|
|
|
|
user_msgs = UserMessage.objects.filter(
|
|
user_profile=user_profile
|
|
).exclude(
|
|
message__recipient_id__in=excluded_recipient_ids
|
|
).extra(
|
|
where=[UserMessage.where_unread()]
|
|
).values(
|
|
'message_id',
|
|
'message__sender_id',
|
|
'message__subject',
|
|
'message__recipient_id',
|
|
'message__recipient__type',
|
|
'message__recipient__type_id',
|
|
'flags',
|
|
).order_by("-message_id")
|
|
|
|
# Limit unread messages for performance reasons.
|
|
user_msgs = list(user_msgs[:MAX_UNREAD_MESSAGES])
|
|
|
|
rows = list(reversed(user_msgs))
|
|
|
|
muted_stream_ids = get_muted_stream_ids(user_profile)
|
|
|
|
topic_mute_checker = build_topic_mute_checker(user_profile)
|
|
|
|
def is_row_muted(stream_id, recipient_id, topic):
|
|
# type: (int, int, Text) -> bool
|
|
if stream_id in muted_stream_ids:
|
|
return True
|
|
|
|
if topic_mute_checker(recipient_id, topic):
|
|
return True
|
|
|
|
return False
|
|
|
|
huddle_cache = {} # type: Dict[int, str]
|
|
|
|
def get_huddle_users(recipient_id):
|
|
# type: (int) -> str
|
|
if recipient_id in huddle_cache:
|
|
return huddle_cache[recipient_id]
|
|
|
|
user_ids_string = huddle_users(recipient_id)
|
|
huddle_cache[recipient_id] = user_ids_string
|
|
return user_ids_string
|
|
|
|
pm_dict = {}
|
|
stream_dict = {}
|
|
unmuted_stream_msgs = set()
|
|
huddle_dict = {}
|
|
mentions = set()
|
|
|
|
for row in rows:
|
|
message_id = row['message_id']
|
|
msg_type = row['message__recipient__type']
|
|
recipient_id = row['message__recipient_id']
|
|
sender_id = row['message__sender_id']
|
|
|
|
if msg_type == Recipient.STREAM:
|
|
stream_id = row['message__recipient__type_id']
|
|
topic = row['message__subject']
|
|
stream_dict[message_id] = dict(
|
|
stream_id=stream_id,
|
|
topic=topic,
|
|
sender_id=sender_id,
|
|
)
|
|
if not is_row_muted(stream_id, recipient_id, topic):
|
|
unmuted_stream_msgs.add(message_id)
|
|
|
|
elif msg_type == Recipient.PERSONAL:
|
|
pm_dict[message_id] = dict(
|
|
sender_id=sender_id,
|
|
)
|
|
|
|
elif msg_type == Recipient.HUDDLE:
|
|
user_ids_string = get_huddle_users(recipient_id)
|
|
huddle_dict[message_id] = dict(
|
|
user_ids_string=user_ids_string,
|
|
)
|
|
|
|
is_mentioned = (row['flags'] & UserMessage.flags.mentioned) != 0
|
|
if is_mentioned:
|
|
mentions.add(message_id)
|
|
|
|
return dict(
|
|
pm_dict=pm_dict,
|
|
stream_dict=stream_dict,
|
|
muted_stream_ids=muted_stream_ids,
|
|
unmuted_stream_msgs=unmuted_stream_msgs,
|
|
huddle_dict=huddle_dict,
|
|
mentions=mentions,
|
|
)
|
|
|
|
def aggregate_unread_data(raw_data):
|
|
# type: (Dict[str, Any]) -> UnreadMessagesResult
|
|
|
|
pm_dict = raw_data['pm_dict']
|
|
stream_dict = raw_data['stream_dict']
|
|
unmuted_stream_msgs = raw_data['unmuted_stream_msgs']
|
|
huddle_dict = raw_data['huddle_dict']
|
|
mentions = list(raw_data['mentions'])
|
|
|
|
count = len(pm_dict) + len(unmuted_stream_msgs) + len(huddle_dict)
|
|
|
|
pm_objects = aggregate_message_dict(
|
|
input_dict=pm_dict,
|
|
lookup_fields=[
|
|
'sender_id',
|
|
],
|
|
collect_senders=False,
|
|
)
|
|
|
|
stream_objects = aggregate_message_dict(
|
|
input_dict=stream_dict,
|
|
lookup_fields=[
|
|
'stream_id',
|
|
'topic',
|
|
],
|
|
collect_senders=True,
|
|
)
|
|
|
|
huddle_objects = aggregate_message_dict(
|
|
input_dict=huddle_dict,
|
|
lookup_fields=[
|
|
'user_ids_string',
|
|
],
|
|
collect_senders=False,
|
|
)
|
|
|
|
result = dict(
|
|
pms=pm_objects,
|
|
streams=stream_objects,
|
|
huddles=huddle_objects,
|
|
mentions=mentions,
|
|
count=count) # type: UnreadMessagesResult
|
|
|
|
return result
|
|
|
|
def apply_unread_message_event(user_profile, state, message, flags):
|
|
# type: (UserProfile, Dict[str, Any], Dict[str, Any], List[str]) -> None
|
|
message_id = message['id']
|
|
if message['type'] == 'stream':
|
|
message_type = 'stream'
|
|
elif message['type'] == 'private':
|
|
others = [
|
|
recip for recip in message['display_recipient']
|
|
if recip['id'] != message['sender_id']
|
|
]
|
|
if len(others) <= 1:
|
|
message_type = 'private'
|
|
else:
|
|
message_type = 'huddle'
|
|
else:
|
|
raise AssertionError("Invalid message type %s" % (message['type'],))
|
|
|
|
sender_id = message['sender_id']
|
|
|
|
if message_type == 'stream':
|
|
stream_id = message['stream_id']
|
|
topic = message['subject']
|
|
new_row = dict(
|
|
stream_id=stream_id,
|
|
topic=topic,
|
|
sender_id=sender_id,
|
|
)
|
|
state['stream_dict'][message_id] = new_row
|
|
|
|
if stream_id not in state['muted_stream_ids']:
|
|
# This next check hits the database.
|
|
if not topic_is_muted(user_profile, stream_id, topic):
|
|
state['unmuted_stream_msgs'].add(message_id)
|
|
|
|
elif message_type == 'private':
|
|
sender_id = message['sender_id']
|
|
new_row = dict(
|
|
sender_id=sender_id,
|
|
)
|
|
state['pm_dict'][message_id] = new_row
|
|
|
|
else:
|
|
display_recipient = message['display_recipient']
|
|
user_ids = [obj['id'] for obj in display_recipient]
|
|
user_ids = sorted(user_ids)
|
|
user_ids_string = ','.join(str(uid) for uid in user_ids)
|
|
new_row = dict(
|
|
user_ids_string=user_ids_string,
|
|
)
|
|
state['huddle_dict'][message_id] = new_row
|
|
|
|
if 'mentioned' in flags:
|
|
state['mentions'].add(message_id)
|