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Add APIs for adding and removing tags from rooms

This commit is contained in:
Mark Haines 2015-10-28 16:06:57 +00:00
parent 3f0a57eb9b
commit 892e70ec84
5 changed files with 320 additions and 0 deletions

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@ -22,6 +22,7 @@ from . import (
receipts,
keys,
tokenrefresh,
tags,
)
from synapse.http.server import JsonResource
@ -44,3 +45,4 @@ class ClientV2AlphaRestResource(JsonResource):
receipts.register_servlets(hs, client_resource)
keys.register_servlets(hs, client_resource)
tokenrefresh.register_servlets(hs, client_resource)
tags.register_servlets(hs, client_resource)

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@ -0,0 +1,89 @@
# -*- coding: utf-8 -*-
# Copyright 2015 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from ._base import client_v2_pattern
from synapse.http.servlet import RestServlet
from twisted.internet import defer
import logging
logger = logging.getLogger(__name__)
class TagListServlet(RestServlet):
"""
GET /user/{user_id}/rooms/{room_id}/tags HTTP/1.1
"""
PATTERN = client_v2_pattern(
"/user/(?P<user_id>[^/]*)/rooms/(?P<room_id>[^/]*)/tags"
)
def __init__(self, hs):
super(TagListServlet, self).__init__()
self.auth = hs.get_auth()
self.store = hs.get_datastore()
@defer.inlineCallbacks
def on_GET(self, request, user_id, room_id):
auth_user, _ = yield self.auth.get_user_by_req(request)
if user_id != auth_user.to_string():
raise AuthError(403, "Cannot get tags for other users.")
tags = yield self.store.get_tags_for_room(user_id, room_id)
defer.returnValue((200, {"tags": tags}))
class TagServlet(RestServlet):
"""
PUT /user/{user_id}/rooms/{room_id}/tags/{tag} HTTP/1.1
DELETE /user/{user_id}/rooms/{room_id}/tags/{tag} HTTP/1.1
"""
PATTERN = client_v2_pattern(
"/user/(?P<user_id>[^/]*)/rooms/(?P<room_id>[^/]*)/tags/(?P<tag>[^/]*)"
)
def __init__(self, hs):
super(TagServlet, self).__init__()
self.auth = hs.get_auth()
self.store = hs.get_datastore()
@defer.inlineCallbacks
def on_PUT(self, request, user_id, room_id, tag):
auth_user, _ = yield self.auth.get_user_by_req(request)
if user_id != auth_user.to_string():
raise AuthError(403, "Cannot add tags for other users.")
yield self.store.add_tag_to_room(user_id, room_id, tag)
# TODO: poke the notifier.
defer.returnValue((200, {}))
@defer.inlineCallbacks
def on_DELETE(self, request, user_id, room_id, tag):
auth_user, _ = yield self.auth.get_user_by_req(request)
if user_id != auth_user.to_string():
raise AuthError(403, "Cannot add tags for other users.")
yield self.store.remove_tag_from_room(user_id, room_id, tag)
# TODO: poke the notifier.
defer.returnValue((200, {}))
def register_servlets(hs, http_server):
TagListServlet(hs).register(http_server)
TagServlet(hs).register(http_server)

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@ -41,6 +41,7 @@ from .end_to_end_keys import EndToEndKeyStore
from .receipts import ReceiptsStore
from .search import SearchStore
from .tags import TagsStore
import logging
@ -71,6 +72,7 @@ class DataStore(RoomMemberStore, RoomStore,
ReceiptsStore,
EndToEndKeyStore,
SearchStore,
TagsStore,
):
def __init__(self, hs):

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@ -0,0 +1,37 @@
/* Copyright 2015 OpenMarket Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CREATE TABLE IF NOT EXISTS room_tags(
user_id TEXT NOT NULL,
room_id TEXT NOT NULL,
tag TEXT NOT NULL, -- The name of the tag.
CONSTRAINT room_tag_uniqueness UNIQUE (user_id, room_id, tag)
);
CREATE TABLE IF NOT EXISTS room_tags_revisions (
user_id TEXT NOT NULL,
room_id TEXT NOT NULL,
stream_id BIGINT NOT NULL, -- The current version of the room tags.
CONSTRAINT room_tag_revisions_uniqueness UNIQUE (user_id, room_id)
);
CREATE TABLE IF NOT EXISTS private_user_data_max_stream_id(
Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE, -- Makes sure this table only has one row.
stream_id BIGINT NOT NULL,
CHECK (Lock='X')
);
INSERT INTO private_user_data_max_stream_id (stream_id) VALUES (0);

190
synapse/storage/tags.py Normal file
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@ -0,0 +1,190 @@
# -*- coding: utf-8 -*-
# Copyright 2014, 2015 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from ._base import SQLBaseStore
from synapse.util.caches.descriptors import cached
from twisted.internet import defer
from .util.id_generators import StreamIdGenerator
import logging
logger = logging.getLogger(__name__)
class TagsStore(SQLBaseStore):
def __init__(self, hs):
super(TagsStore, self).__init__(hs)
self._private_user_data_id_gen = StreamIdGenerator(
"private_user_data_max_stream_id", "stream_id"
)
@cached()
def get_tags_for_user(self, user_id):
"""Get all the tags for a user.
Args:
user_id(str): The user to get the tags for.
Returns:
A deferred dict mapping from room_id strings to lists of tag
strings.
"""
deferred = self._simple_select_list(
"room_tags", {"user_id": user_id}, ["room_id", "tag"]
)
@deferred.addCallback
def tags_by_room(rows):
tags_by_room = {}
for row in rows:
tags_by_room.setdefault(row["room_id"], []).append(row["tag"])
return tags_by_room
return deferred
@defer.inlineCallbacks
def get_updated_tags(self, user_id, stream_id):
"""Get all the tags for the rooms where the tags have changed since the
given version
Args:
user_id(str): The user to get the tags for.
stream_id(int): The earliest update to get for the user.
Returns:
A deferred dict mapping from room_id strings to lists of tag
strings for all the rooms that changed since the stream_id token.
"""
def get_updated_tags_txn(txn):
sql = (
"SELECT room_id from room_tags_revisions"
" WHERE user_id = ? AND stream_id > ?"
)
txn.execute(sql, (user_id, stream_id))
room_ids = [row[0] for row in txn.fetchall()]
return room_ids
room_ids = yield self.runInteraction(
"get_updated_tags", get_updated_tags_txn
)
results = {}
if room_ids:
tags_by_room = yield self.get_tags_for_user(self, user_id)
for room_id in rooms_ids:
results[room_id] = tags_by_room[room_id]
defer.returnValue(results)
def get_tags_for_room(self, user_id, room_id):
"""Get all the tags for the given room
Args:
user_id(str): The user to get tags for
room_id(str): The room to get tags for
Returns:
A deferred list of string tags.
"""
return self._simple_select_onecol(
table="room_tags",
keyvalues={"user_id": user_id, "room_id": room_id},
retcol="tag",
desc="get_tags_for_room",
)
@defer.inlineCallbacks
def add_tag_to_room(self, user_id, room_id, tag):
"""Add a tag to a room for a user.
Returns:
A deferred that completes once the tag has been added.
"""
def add_tag_txn(txn, next_id):
sql = (
"INSERT INTO room_tags (user_id, room_id, tag)"
" VALUES (?, ?, ?)"
)
try:
txn.execute(sql, (user_id, room_id, tag))
except database_engine.module.IntegrityError as e:
# Return early if the row is already in the table
# and we don't need to bump the revision number of the
# private_user_data.
return
self._update_revision_txn(txn, user_id, room_id, next_id)
with (yield self._private_user_data_id_gen.get_next(self)) as next_id:
yield self.runInteraction("add_tag", add_tag_txn, next_id)
self.get_tags_for_user.invalidate((user_id,))
@defer.inlineCallbacks
def remove_tag_from_room(self, user_id, room_id, tag):
"""Remove a tag from a room for a user.
Returns:
A deffered that completes once the tag has been removed
"""
def remove_tag_txn(txn, next_id):
sql = (
"DELETE FROM room_tags "
" WHERE user_id = ? AND room_id = ? AND tag = ?"
)
txn.execute(sql, (user_id, room_id, tag))
self._update_revision_txn(txn, user_id, room_id, next_id)
with (yield self._private_user_data_id_gen.get_next(self)) as next_id:
yield self.runInteraction("remove_tag", remove_tag_txn, next_id)
self.get_tags_for_user.invalidate((user_id,))
def _update_revision_txn(self, txn, user_id, room_id, next_id):
"""Update the latest revision of the tags for the given user and room.
Args:
txn: The database cursor
user_id(str): The ID of the user.
room_id(str): The ID of the room.
next_id(int): The the revision to advance to.
"""
update_max_id_sql = (
"UPDATE private_user_data_max_stream_id"
" SET stream_id = ?"
" WHERE stream_id < ?"
)
txn.execute(update_max_id_sql, (next_id, next_id))
update_sql = (
"UPDATE room_tags_revisions"
" SET stream_id = ?"
" WHERE user_id = ?"
" AND room_id = ?"
)
txn.execute(update_sql, (next_id, user_id, room_id))
if txn.rowcount == 0:
insert_sql = (
"INSERT INTO room_tags_revisions (user_id, room_id, stream_id)"
" VALUES (?, ?, ?)"
)
try:
txn.execute(insert_sql, (user_id, room_id, next_id))
except database_engine.module.IntegrityError as e:
# Ignore insertion errors. It doesn't matter if the row wasn't
# inserted because if two updates happend concurrently the one
# with the higher stream_id will not be reported to a client
# unless the previous update has completed. It doesn't matter
# which stream_id ends up in the table, as long as it is higher
# than the id that the client has.
pass