1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// 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.
package tables
import (
"context"
"database/sql"
"github.com/matrix-org/gomatrixserverlib"
"github.com/tidwall/gjson"
)
type CurrentRoomState interface {
SelectStateEvent(ctx context.Context, roomID, evType, stateKey string) (*gomatrixserverlib.HeaderedEvent, error)
// SelectEventsWithEventIDs returns the events for the given event IDs. If the event(s) are missing, they are not returned
// and no error is returned.
SelectEventsWithEventIDs(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]gomatrixserverlib.HeaderedEvent, error)
// UpsertRoomState stores the given event in the database, along with an extracted piece of content.
// The piece of content will vary depending on the event type, and table implementations may use this information to optimise
// lookups e.g membership lookups. The mapped value of `contentVal` is outlined in ExtractContentValue. An empty `contentVal`
// means there is nothing to store for this field.
UpsertRoomState(ctx context.Context, txn *sql.Tx, event gomatrixserverlib.HeaderedEvent, contentVal string) error
DeleteRoomStateByEventID(ctx context.Context, txn *sql.Tx, eventID string) error
// SelectRoomIDsWithMembership returns the list of room IDs which have the given user in the given membership state.
SelectRoomIDsWithMembership(ctx context.Context, txn *sql.Tx, userID string, membership string) ([]string, error)
SelectBulkStateContent(ctx context.Context, roomIDs []string, tuples []gomatrixserverlib.StateKeyTuple, allowWildcards bool) ([]StrippedEvent, error)
// SelectJoinedUsersSetForRooms returns the set of all users in the rooms who are joined to any of these rooms, along with the
// counts of how many rooms they are joined.
SelectJoinedUsersSetForRooms(ctx context.Context, roomIDs []string) (map[string]int, error)
// SelectKnownUsers searches all users that userID knows about.
SelectKnownUsers(ctx context.Context, userID, searchString string, limit int) ([]string, error)
}
// StrippedEvent represents a stripped event for returning extracted content values.
type StrippedEvent struct {
RoomID string
EventType string
StateKey string
ContentValue string
}
// ExtractContentValue from the given state event. For example, given an m.room.name event with:
// content: { name: "Foo" }
// this returns "Foo".
func ExtractContentValue(ev *gomatrixserverlib.HeaderedEvent) string {
content := ev.Content()
key := ""
switch ev.Type() {
case gomatrixserverlib.MRoomCreate:
key = "creator"
case gomatrixserverlib.MRoomCanonicalAlias:
key = "alias"
case gomatrixserverlib.MRoomHistoryVisibility:
key = "history_visibility"
case gomatrixserverlib.MRoomJoinRules:
key = "join_rule"
case gomatrixserverlib.MRoomMember:
key = "membership"
case gomatrixserverlib.MRoomName:
key = "name"
case "m.room.avatar":
key = "url"
case "m.room.topic":
key = "topic"
case "m.room.guest_access":
key = "guest_access"
}
result := gjson.GetBytes(content, key)
if !result.Exists() {
return ""
}
// this returns the empty string if this is not a string type
return result.Str
}
|
