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Add m.room.deletion. If an event is deleted it will be returned to clients 'pruned', i.e. all client specified keys will be removed.

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This commit is contained in:
Erik Johnston 2014-09-23 15:28:32 +01:00
parent 231afe464a
commit 78af6bbb98
9 changed files with 144 additions and 21 deletions
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6
synapse/api/events/__init__.py
View file

@ -22,7 +22,7 @@ def serialize_event(hs, e):
if not isinstance(e, SynapseEvent):
return e
d = e.get_dict()
d = {k: v for k, v in e.get_dict().items() if v is not None or v is not False}
if "age_ts" in d:
d["age"] = int(hs.get_clock().time_msec()) - d["age_ts"]
del d["age_ts"]
@ -58,17 +58,19 @@ class SynapseEvent(JsonEncodedObject):
"required_power_level",
"age_ts",
"prev_content",
"prev_state",
"pruned",
]
internal_keys = [
"is_state",
"prev_events",
"prev_state",
"depth",
"destinations",
"origin",
"outlier",
"power_level",
"deleted",
]
required_keys = [

4
synapse/api/events/factory.py
View file

@ -17,7 +17,8 @@ from synapse.api.events.room import (
RoomTopicEvent, MessageEvent, RoomMemberEvent, FeedbackEvent,
InviteJoinEvent, RoomConfigEvent, RoomNameEvent, GenericEvent,
RoomPowerLevelsEvent, RoomJoinRulesEvent, RoomOpsPowerLevelsEvent,
RoomCreateEvent, RoomAddStateLevelEvent, RoomSendEventLevelEvent
RoomCreateEvent, RoomAddStateLevelEvent, RoomSendEventLevelEvent,
RoomDeletionEvent,
)
from synapse.util.stringutils import random_string
@ -39,6 +40,7 @@ class EventFactory(object):
RoomAddStateLevelEvent,
RoomSendEventLevelEvent,
RoomOpsPowerLevelsEvent,
RoomDeletionEvent,
]
def __init__(self, hs):

9
synapse/api/events/room.py
View file

@ -180,3 +180,12 @@ class RoomAliasesEvent(SynapseStateEvent):
def get_content_template(self):
return {}
class RoomDeletionEvent(SynapseEvent):
TYPE = "m.room.deletion"
valid_keys = SynapseEvent.valid_keys + ["deletes"]
def get_content_template(self):
return {}

38
synapse/rest/room.py
View file

@ -19,7 +19,7 @@ from twisted.internet import defer
from base import RestServlet, client_path_pattern
from synapse.api.errors import SynapseError, Codes
from synapse.streams.config import PaginationConfig
from synapse.api.events.room import RoomMemberEvent
from synapse.api.events.room import RoomMemberEvent, RoomDeletionEvent
from synapse.api.constants import Membership
import json
@ -430,6 +430,41 @@ class RoomMembershipRestServlet(RestServlet):
self.txns.store_client_transaction(request, txn_id, response)
defer.returnValue(response)
class RoomDeleteEventRestServlet(RestServlet):
def register(self, http_server):
PATTERN = ("/rooms/(?P<room_id>[^/]*)/delete/(?P<event_id>[^/]*)")
register_txn_path(self, PATTERN, http_server)
@defer.inlineCallbacks
def on_POST(self, request, room_id, event_id):
user = yield self.auth.get_user_by_req(request)
content = _parse_json(request)
event = self.event_factory.create_event(
etype=RoomDeletionEvent.TYPE,
room_id=urllib.unquote(room_id),
user_id=user.to_string(),
content=content,
deletes=event_id,
)
msg_handler = self.handlers.message_handler
yield msg_handler.send_message(event)
defer.returnValue((200, {"event_id": event.event_id}))
@defer.inlineCallbacks
def on_PUT(self, request, room_id, event_id, txn_id):
try:
defer.returnValue(self.txns.get_client_transaction(request, txn_id))
except KeyError:
pass
response = yield self.on_POST(request, room_id, event_id)
self.txns.store_client_transaction(request, txn_id, response)
defer.returnValue(response)
def _parse_json(request):
try:
@ -485,3 +520,4 @@ def register_servlets(hs, http_server):
PublicRoomListRestServlet(hs).register(http_server)
RoomStateRestServlet(hs).register(http_server)
RoomInitialSyncRestServlet(hs).register(http_server)
RoomDeleteEventRestServlet(hs).register(http_server)

29
synapse/storage/__init__.py
View file

@ -24,6 +24,7 @@ from synapse.api.events.room import (
RoomAddStateLevelEvent,
RoomSendEventLevelEvent,
RoomOpsPowerLevelsEvent,
RoomDeletionEvent,
)
from synapse.util.logutils import log_function
@ -61,7 +62,7 @@ SCHEMAS = [
# Remember to update this number every time an incompatible change is made to
# database schema files, so the users will be informed on server restarts.
SCHEMA_VERSION = 3
SCHEMA_VERSION = 4
class _RollbackButIsFineException(Exception):
@ -182,6 +183,8 @@ class DataStore(RoomMemberStore, RoomStore,
self._store_send_event_level(txn, event)
elif event.type == RoomOpsPowerLevelsEvent.TYPE:
self._store_ops_level(txn, event)
elif event.type == RoomDeletionEvent.TYPE:
self._store_deletion(txn, event)
vals = {
"topological_ordering": event.depth,
@ -203,7 +206,7 @@ class DataStore(RoomMemberStore, RoomStore,
unrec = {
k: v
for k, v in event.get_full_dict().items()
if k not in vals.keys()
if k not in vals.keys() and k is not "deleted"
}
vals["unrecognized_keys"] = json.dumps(unrec)
@ -241,14 +244,32 @@ class DataStore(RoomMemberStore, RoomStore,
}
)
def _store_deletion(self, txn, event):
event_id = event.event_id
deletes = event.deletes
# We check if this new delete deletes an old delete or has been
# deleted by a previous delete that we received out of order.
sql = "SELECT * FROM deletions WHERE event_id = ? OR deletes = ?"
txn.execute(sql, (deletes, event_id))
if txn.fetchall():
sql = "DELETE FROM deletions WHERE event_id = ? OR deletes = ?"
txn.execute(sql, (deletes, event_id, ))
else:
sql = "INSERT INTO deletions (event_id, deletes) VALUES (?,?)"
txn.execute(sql, (event_id, deletes))
@defer.inlineCallbacks
def get_current_state(self, room_id, event_type=None, state_key=""):
sql = (
"SELECT e.* FROM events as e "
"SELECT e.*, (%(deleted)s) AS deleted FROM events as e "
"INNER JOIN current_state_events as c ON e.event_id = c.event_id "
"INNER JOIN state_events as s ON e.event_id = s.event_id "
"WHERE c.room_id = ? "
)
) % {
"deleted": "e.event_id IN (SELECT deletes FROM deletions)",
}
if event_type:
sql += " AND s.type = ? AND s.state_key = ? "

30
synapse/storage/_base.py
View file

@ -17,6 +17,7 @@ import logging
from twisted.internet import defer
from synapse.api.errors import StoreError
from synapse.api.events.utils import prune_event
from synapse.util.logutils import log_function
import collections
@ -345,7 +346,7 @@ class SQLBaseStore(object):
return self.runInteraction(func)
def _parse_event_from_row(self, row_dict):
d = copy.deepcopy({k: v for k, v in row_dict.items() if v})
d = copy.deepcopy({k: v for k, v in row_dict.items()})
d.pop("stream_ordering", None)
d.pop("topological_ordering", None)
@ -373,8 +374,8 @@ class SQLBaseStore(object):
sql = "SELECT * FROM events WHERE event_id = ?"
for ev in events:
if hasattr(ev, "prev_state"):
# Load previous state_content.
if hasattr(ev, "prev_state"):
# Load previous state_content.
# TODO: Should we be pulling this out above?
cursor = txn.execute(sql, (ev.prev_state,))
prevs = self.cursor_to_dict(cursor)
@ -382,8 +383,31 @@ class SQLBaseStore(object):
prev = self._parse_event_from_row(prevs[0])
ev.prev_content = prev.content
if not hasattr(ev, "deleted"):
logger.debug("Doesn't have deleted key: %s", ev)
ev.deleted = self._has_been_deleted_txn(txn, ev)
if ev.deleted:
# Get the deletion event.
sql = "SELECT * FROM events WHERE event_id = ?"
txn.execute(sql, (ev.deleted,))
del_evs = self._parse_events_txn(
txn, self.cursor_to_dict(txn)
)
if del_evs:
prune_event(ev)
ev.pruned = del_evs[0]
return events
def _has_been_deleted_txn(self, txn, event):
sql = "SELECT * FROM deletions WHERE deletes = ?"
txn.execute(sql, (event.event_id,))
return len(txn.fetchall()) > 0
class Table(object):
""" A base class used to store information about a particular table.
"""

13
synapse/storage/roommember.py
View file

@ -182,14 +182,21 @@ class RoomMemberStore(SQLBaseStore):
)
def _get_members_query_txn(self, txn, where_clause, where_values):
del_sql = (
"SELECT event_id FROM deletions WHERE deletes = e.event_id"
)
sql = (
"SELECT e.* FROM events as e "
"SELECT e.*, (%(deleted)s) AS deleted FROM events as e "
"INNER JOIN room_memberships as m "
"ON e.event_id = m.event_id "
"INNER JOIN current_state_events as c "
"ON m.event_id = c.event_id "
"WHERE %s "
) % (where_clause,)
"WHERE %(where)s "
) % {
"deleted": del_sql,
"where": where_clause,
}
txn.execute(sql, where_values)
rows = self.cursor_to_dict(txn)

6
synapse/storage/schema/delta/v4.sql
View file

@ -1,5 +1,7 @@
CREATE TABLE IF NOT EXISTS deletions (
event_id TEXT NOT NULL,
deletes TEXT NOT NULL,
CONSTRAINT ev_uniq UNIQUE (event_id)
deletes TEXT NOT NULL
);
CREATE INDEX IF NOT EXISTS deletions_event_id ON deletions (event_id);
CREATE INDEX IF NOT EXISTS deletions_deletes ON deletions (deletes);

30
synapse/storage/stream.py
View file

@ -157,6 +157,10 @@ class StreamStore(SQLBaseStore):
"WHERE m.user_id = ? "
)
del_sql = (
"SELECT event_id FROM deletions WHERE deletes = e.event_id"
)
if limit:
limit = max(limit, MAX_STREAM_SIZE)
else:
@ -171,13 +175,14 @@ class StreamStore(SQLBaseStore):
return
sql = (
"SELECT * FROM events as e WHERE "
"SELECT *, (%(deleted)s) AS deleted FROM events AS e WHERE "
"((room_id IN (%(current)s)) OR "
"(event_id IN (%(invites)s))) "
"AND e.stream_ordering > ? AND e.stream_ordering <= ? "
"AND e.outlier = 0 "
"ORDER BY stream_ordering ASC LIMIT %(limit)d "
) % {
"deleted": del_sql,
"current": current_room_membership_sql,
"invites": membership_sql,
"limit": limit
@ -224,11 +229,20 @@ class StreamStore(SQLBaseStore):
else:
limit_str = ""
del_sql = (
"SELECT event_id FROM deletions WHERE deletes = events.event_id"
)
sql = (
"SELECT * FROM events "
"SELECT *, (%(deleted)s) AS deleted FROM events "
"WHERE outlier = 0 AND room_id = ? AND %(bounds)s "
"ORDER BY topological_ordering %(order)s, stream_ordering %(order)s %(limit)s "
) % {"bounds": bounds, "order": order, "limit": limit_str}
) % {
"deleted": del_sql,
"bounds": bounds,
"order": order,
"limit": limit_str
}
rows = yield self._execute_and_decode(
sql,
@ -257,11 +271,17 @@ class StreamStore(SQLBaseStore):
with_feedback=False):
# TODO (erikj): Handle compressed feedback
del_sql = (
"SELECT event_id FROM deletions WHERE deletes = events.event_id"
)
sql = (
"SELECT * FROM events "
"SELECT *, (%(deleted)s) AS deleted FROM events "
"WHERE room_id = ? AND stream_ordering <= ? "
"ORDER BY topological_ordering DESC, stream_ordering DESC LIMIT ? "
)
) % {
"deleted": del_sql,
}
rows = yield self._execute_and_decode(
sql,