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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
package main
import (
"context"
"flag"
"fmt"
"sort"
"strconv"
"strings"
"time"
"github.com/matrix-org/dendrite/internal/caching"
"github.com/matrix-org/dendrite/roomserver/state"
"github.com/matrix-org/dendrite/roomserver/storage"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/dendrite/setup"
"github.com/matrix-org/dendrite/setup/base"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/gomatrixserverlib"
)
// This is a utility for inspecting state snapshots and running state resolution
// against real snapshots in an actual database.
// It takes one or more state snapshot NIDs as arguments, along with a room version
// to use for unmarshalling events, and will produce resolved output.
//
// Usage: ./resolve-state --roomversion=version snapshot [snapshot ...]
// e.g. ./resolve-state --roomversion=5 1254 1235 1282
var roomVersion = flag.String("roomversion", "5", "the room version to parse events as")
var filterType = flag.String("filtertype", "", "the event types to filter on")
var difference = flag.Bool("difference", false, "whether to calculate the difference between snapshots")
// nolint:gocyclo
func main() {
ctx := context.Background()
cfg := setup.ParseFlags(true)
cfg.Logging = append(cfg.Logging[:0], config.LogrusHook{
Type: "std",
Level: "error",
})
cfg.ClientAPI.RegistrationDisabled = true
base := base.NewBaseDendrite(cfg, base.DisableMetrics)
args := flag.Args()
fmt.Println("Room version", *roomVersion)
snapshotNIDs := []types.StateSnapshotNID{}
for _, arg := range args {
if i, err := strconv.Atoi(arg); err == nil {
snapshotNIDs = append(snapshotNIDs, types.StateSnapshotNID(i))
}
}
fmt.Println("Fetching", len(snapshotNIDs), "snapshot NIDs")
roomserverDB, err := storage.Open(
base.ProcessContext.Context(), base.ConnectionManager, &cfg.RoomServer.Database,
caching.NewRistrettoCache(128*1024*1024, time.Hour, true),
)
if err != nil {
panic(err)
}
roomInfo := &types.RoomInfo{
RoomVersion: gomatrixserverlib.RoomVersion(*roomVersion),
}
stateres := state.NewStateResolution(roomserverDB, roomInfo)
if *difference {
if len(snapshotNIDs) != 2 {
panic("need exactly two state snapshot NIDs to calculate difference")
}
var removed, added []types.StateEntry
removed, added, err = stateres.DifferenceBetweeenStateSnapshots(ctx, snapshotNIDs[0], snapshotNIDs[1])
if err != nil {
panic(err)
}
eventNIDMap := map[types.EventNID]struct{}{}
for _, entry := range append(removed, added...) {
eventNIDMap[entry.EventNID] = struct{}{}
}
eventNIDs := make([]types.EventNID, 0, len(eventNIDMap))
for eventNID := range eventNIDMap {
eventNIDs = append(eventNIDs, eventNID)
}
var eventEntries []types.Event
eventEntries, err = roomserverDB.Events(ctx, roomInfo, eventNIDs)
if err != nil {
panic(err)
}
events := make(map[types.EventNID]*gomatrixserverlib.Event, len(eventEntries))
for _, entry := range eventEntries {
events[entry.EventNID] = entry.Event
}
if len(removed) > 0 {
fmt.Println("Removed:")
for _, r := range removed {
event := events[r.EventNID]
fmt.Println()
fmt.Printf("* %s %s %q\n", event.EventID(), event.Type(), *event.StateKey())
fmt.Printf(" %s\n", string(event.Content()))
}
}
if len(removed) > 0 && len(added) > 0 {
fmt.Println()
}
if len(added) > 0 {
fmt.Println("Added:")
for _, a := range added {
event := events[a.EventNID]
fmt.Println()
fmt.Printf("* %s %s %q\n", event.EventID(), event.Type(), *event.StateKey())
fmt.Printf(" %s\n", string(event.Content()))
}
}
return
}
var stateEntries []types.StateEntry
for _, snapshotNID := range snapshotNIDs {
var entries []types.StateEntry
entries, err = stateres.LoadStateAtSnapshot(ctx, snapshotNID)
if err != nil {
panic(err)
}
stateEntries = append(stateEntries, entries...)
}
eventNIDMap := map[types.EventNID]struct{}{}
for _, entry := range stateEntries {
eventNIDMap[entry.EventNID] = struct{}{}
}
eventNIDs := make([]types.EventNID, 0, len(eventNIDMap))
for eventNID := range eventNIDMap {
eventNIDs = append(eventNIDs, eventNID)
}
fmt.Println("Fetching", len(eventNIDMap), "state events")
eventEntries, err := roomserverDB.Events(ctx, roomInfo, eventNIDs)
if err != nil {
panic(err)
}
authEventIDMap := make(map[string]struct{})
events := make([]*gomatrixserverlib.Event, len(eventEntries))
for i := range eventEntries {
events[i] = eventEntries[i].Event
for _, authEventID := range eventEntries[i].AuthEventIDs() {
authEventIDMap[authEventID] = struct{}{}
}
}
authEventIDs := make([]string, 0, len(authEventIDMap))
for authEventID := range authEventIDMap {
authEventIDs = append(authEventIDs, authEventID)
}
fmt.Println("Fetching", len(authEventIDs), "auth events")
authEventEntries, err := roomserverDB.EventsFromIDs(ctx, roomInfo, authEventIDs)
if err != nil {
panic(err)
}
authEvents := make([]*gomatrixserverlib.Event, len(authEventEntries))
for i := range authEventEntries {
authEvents[i] = authEventEntries[i].Event
}
fmt.Println("Resolving state")
var resolved Events
resolved, err = gomatrixserverlib.ResolveConflicts(
gomatrixserverlib.RoomVersion(*roomVersion),
events,
authEvents,
)
if err != nil {
panic(err)
}
fmt.Println("Resolved state contains", len(resolved), "events")
sort.Sort(resolved)
filteringEventType := *filterType
count := 0
for _, event := range resolved {
if filteringEventType != "" && event.Type() != filteringEventType {
continue
}
count++
fmt.Println()
fmt.Printf("* %s %s %q\n", event.EventID(), event.Type(), *event.StateKey())
fmt.Printf(" %s\n", string(event.Content()))
}
fmt.Println()
fmt.Println("Returned", count, "state events after filtering")
}
type Events []*gomatrixserverlib.Event
func (e Events) Len() int {
return len(e)
}
func (e Events) Swap(i, j int) {
e[i], e[j] = e[j], e[i]
}
func (e Events) Less(i, j int) bool {
typeDelta := strings.Compare(e[i].Type(), e[j].Type())
if typeDelta < 0 {
return true
}
if typeDelta > 0 {
return false
}
stateKeyDelta := strings.Compare(*e[i].StateKey(), *e[j].StateKey())
return stateKeyDelta < 0
}
|
