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log sending messages

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This commit is contained in:
Bruno Windels 2021-02-23 19:22:59 +01:00
parent 57bb75e864
commit dd38fc13d7
8 changed files with 159 additions and 114 deletions
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42
src/matrix/e2ee/DeviceTracker.js
View file

@ -69,11 +69,11 @@ export class DeviceTracker {
}));
}
async trackRoom(room) {
async trackRoom(room, log) {
if (room.isTrackingMembers || !room.isEncrypted) {
return;
}
const memberList = await room.loadMemberList();
const memberList = await room.loadMemberList(log);
try {
const txn = this._storage.readWriteTxn([
this._storage.storeNames.roomSummary,
@ -83,6 +83,7 @@ export class DeviceTracker {
try {
isTrackingChanges = room.writeIsTrackingMembers(true, txn);
const members = Array.from(memberList.members.values());
log.set("members", members.length);
await this._writeJoinedMembers(members, txn);
} catch (err) {
txn.abort();
@ -142,7 +143,7 @@ export class DeviceTracker {
}
}
async _queryKeys(userIds, hsApi) {
async _queryKeys(userIds, hsApi, log) {
// TODO: we need to handle the race here between /sync and /keys/query just like we need to do for the member list ...
// there are multiple requests going out for /keys/query though and only one for /members
@ -153,9 +154,9 @@ export class DeviceTracker {
return deviceKeysMap;
}, {}),
"token": this._getSyncToken()
}).response();
}, {log}).response();
const verifiedKeysPerUser = this._filterVerifiedDeviceKeys(deviceKeyResponse["device_keys"]);
const verifiedKeysPerUser = log.wrap("verify", log => this._filterVerifiedDeviceKeys(deviceKeyResponse["device_keys"], log));
const txn = this._storage.readWriteTxn([
this._storage.storeNames.userIdentities,
this._storage.storeNames.deviceIdentities,
@ -167,6 +168,7 @@ export class DeviceTracker {
return await this._storeQueriedDevicesForUserId(userId, deviceIdentities, txn);
}));
deviceIdentities = devicesIdentitiesPerUser.reduce((all, devices) => all.concat(devices), []);
log.set("devices", deviceIdentities.length);
} catch (err) {
txn.abort();
throw err;
@ -215,7 +217,7 @@ export class DeviceTracker {
/**
* @return {Array<{userId, verifiedKeys: Array<DeviceSection>>}
*/
_filterVerifiedDeviceKeys(keyQueryDeviceKeysResponse) {
_filterVerifiedDeviceKeys(keyQueryDeviceKeysResponse, parentLog) {
const curve25519Keys = new Set();
const verifiedKeys = Object.entries(keyQueryDeviceKeysResponse).map(([userId, keysByDevice]) => {
const verifiedEntries = Object.entries(keysByDevice).filter(([deviceId, deviceKeys]) => {
@ -233,11 +235,21 @@ export class DeviceTracker {
return false;
}
if (curve25519Keys.has(curve25519Key)) {
console.warn("ignoring device with duplicate curve25519 key in /keys/query response", deviceKeys);
parentLog.log({
l: "ignore device with duplicate curve25519 key",
keys: deviceKeys
}, parentLog.level.Warn);
return false;
}
curve25519Keys.add(curve25519Key);
return this._hasValidSignature(deviceKeys);
const isValid = this._hasValidSignature(deviceKeys);
if (!isValid) {
parentLog.log({
l: "ignore device with invalid signature",
keys: deviceKeys
}, parentLog.level.Warn);
}
return isValid;
});
const verifiedKeys = verifiedEntries.map(([, deviceKeys]) => deviceKeys);
return {userId, verifiedKeys};
@ -258,7 +270,7 @@ export class DeviceTracker {
* @param {String} roomId [description]
* @return {[type]} [description]
*/
async devicesForTrackedRoom(roomId, hsApi) {
async devicesForTrackedRoom(roomId, hsApi, log) {
const txn = this._storage.readTxn([
this._storage.storeNames.roomMembers,
this._storage.storeNames.userIdentities,
@ -271,14 +283,14 @@ export class DeviceTracker {
// So, this will also contain non-joined memberships
const userIds = await txn.roomMembers.getAllUserIds(roomId);
return await this._devicesForUserIds(roomId, userIds, txn, hsApi);
return await this._devicesForUserIds(roomId, userIds, txn, hsApi, log);
}
async devicesForRoomMembers(roomId, userIds, hsApi) {
async devicesForRoomMembers(roomId, userIds, hsApi, log) {
const txn = this._storage.readTxn([
this._storage.storeNames.userIdentities,
]);
return await this._devicesForUserIds(roomId, userIds, txn, hsApi);
return await this._devicesForUserIds(roomId, userIds, txn, hsApi, log);
}
/**
@ -288,7 +300,7 @@ export class DeviceTracker {
* @param {HomeServerApi} hsApi
* @return {Array<DeviceIdentity>}
*/
async _devicesForUserIds(roomId, userIds, userIdentityTxn, hsApi) {
async _devicesForUserIds(roomId, userIds, userIdentityTxn, hsApi, log) {
const allMemberIdentities = await Promise.all(userIds.map(userId => userIdentityTxn.userIdentities.get(userId)));
const identities = allMemberIdentities.filter(identity => {
// identity will be missing for any userIds that don't have
@ -297,12 +309,14 @@ export class DeviceTracker {
});
const upToDateIdentities = identities.filter(i => i.deviceTrackingStatus === TRACKING_STATUS_UPTODATE);
const outdatedIdentities = identities.filter(i => i.deviceTrackingStatus === TRACKING_STATUS_OUTDATED);
log.set("uptodate", upToDateIdentities.length);
log.set("outdated", outdatedIdentities.length);
let queriedDevices;
if (outdatedIdentities.length) {
// TODO: ignore the race between /sync and /keys/query for now,
// where users could get marked as outdated or added/removed from the room while
// querying keys
queriedDevices = await this._queryKeys(outdatedIdentities.map(i => i.userId), hsApi);
queriedDevices = await this._queryKeys(outdatedIdentities.map(i => i.userId), hsApi, log);
}
const deviceTxn = this._storage.readTxn([

40
src/matrix/e2ee/RoomEncryption.js
View file

@ -252,21 +252,21 @@ export class RoomEncryption {
}
/** shares the encryption key for the next message if needed */
async ensureMessageKeyIsShared(hsApi) {
async ensureMessageKeyIsShared(hsApi, log) {
if (this._lastKeyPreShareTime?.measure() < MIN_PRESHARE_INTERVAL) {
return;
}
this._lastKeyPreShareTime = this._clock.createMeasure();
const roomKeyMessage = await this._megolmEncryption.ensureOutboundSession(this._room.id, this._encryptionParams);
if (roomKeyMessage) {
await this._shareNewRoomKey(roomKeyMessage, hsApi);
await log.wrap("share key", log => this._shareNewRoomKey(roomKeyMessage, hsApi, log));
}
}
async encrypt(type, content, hsApi) {
const megolmResult = await this._megolmEncryption.encrypt(this._room.id, type, content, this._encryptionParams);
async encrypt(type, content, hsApi, log) {
const megolmResult = await log.wrap("megolm encrypt", () => this._megolmEncryption.encrypt(this._room.id, type, content, this._encryptionParams));
if (megolmResult.roomKeyMessage) {
this._shareNewRoomKey(megolmResult.roomKeyMessage, hsApi);
log.wrapDetached("share key", log => this._shareNewRoomKey(megolmResult.roomKeyMessage, hsApi, log));
}
return {
type: ENCRYPTED_TYPE,
@ -283,9 +283,9 @@ export class RoomEncryption {
return false;
}
async _shareNewRoomKey(roomKeyMessage, hsApi) {
await this._deviceTracker.trackRoom(this._room);
const devices = await this._deviceTracker.devicesForTrackedRoom(this._room.id, hsApi);
async _shareNewRoomKey(roomKeyMessage, hsApi, log) {
await this._deviceTracker.trackRoom(this._room, log);
const devices = await this._deviceTracker.devicesForTrackedRoom(this._room.id, hsApi, log);
const userIds = Array.from(devices.reduce((set, device) => set.add(device.userId), new Set()));
// store operation for room key share, in case we don't finish here
@ -297,13 +297,15 @@ export class RoomEncryption {
writeOpTxn.abort();
throw err;
}
log.set("id", operationId);
log.set("sessionId", roomKeyMessage.session_id);
await writeOpTxn.complete();
// TODO: at this point we have the room key stored, and the rest is sort of optional
// it would be nice if we could signal SendQueue that any error from here on is non-fatal and
// return the encrypted payload.
// send the room key
await this._sendRoomKey(roomKeyMessage, devices, hsApi);
await this._sendRoomKey(roomKeyMessage, devices, hsApi, log);
// remove the operation
const removeOpTxn = this._storage.readWriteTxn([this._storage.storeNames.operations]);
@ -353,8 +355,10 @@ export class RoomEncryption {
if (operation.type !== "share_room_key") {
continue;
}
const devices = await this._deviceTracker.devicesForRoomMembers(this._room.id, operation.userIds, hsApi);
await this._sendRoomKey(operation.roomKeyMessage, devices, hsApi);
await log.wrap("operation", async log => {
log.set("id", operation.id);
const devices = await this._deviceTracker.devicesForRoomMembers(this._room.id, operation.userIds, hsApi, log);
await this._sendRoomKey(operation.roomKeyMessage, devices, hsApi, log);
const removeTxn = this._storage.readWriteTxn([this._storage.storeNames.operations]);
try {
removeTxn.operations.remove(operation.id);
@ -363,19 +367,21 @@ export class RoomEncryption {
throw err;
}
await removeTxn.complete();
});
}
} finally {
this._isFlushingRoomKeyShares = false;
}
}
async _sendRoomKey(roomKeyMessage, devices, hsApi) {
const messages = await this._olmEncryption.encrypt(
"m.room_key", roomKeyMessage, devices, hsApi);
await this._sendMessagesToDevices(ENCRYPTED_TYPE, messages, hsApi);
async _sendRoomKey(roomKeyMessage, devices, hsApi, log) {
const messages = await log.wrap("olm encrypt", log => this._olmEncryption.encrypt(
"m.room_key", roomKeyMessage, devices, hsApi, log));
await log.wrap("send", log => this._sendMessagesToDevices(ENCRYPTED_TYPE, messages, hsApi, log));
}
async _sendMessagesToDevices(type, messages, hsApi) {
async _sendMessagesToDevices(type, messages, hsApi, log) {
log.set("messages", messages.length);
const messagesByUser = groupBy(messages, message => message.device.userId);
const payload = {
messages: Array.from(messagesByUser.entries()).reduce((userMap, [userId, messages]) => {
@ -387,7 +393,7 @@ export class RoomEncryption {
}, {})
};
const txnId = makeTxnId();
await hsApi.sendToDevice(type, payload, txnId).response();
await hsApi.sendToDevice(type, payload, txnId, {log}).response();
}
dispose() {

26
src/matrix/e2ee/olm/Encryption.js
View file

@ -47,17 +47,17 @@ export class Encryption {
this._senderKeyLock = senderKeyLock;
}
async encrypt(type, content, devices, hsApi) {
async encrypt(type, content, devices, hsApi, log) {
let messages = [];
for (let i = 0; i < devices.length ; i += MAX_BATCH_SIZE) {
const batchDevices = devices.slice(i, i + MAX_BATCH_SIZE);
const batchMessages = await this._encryptForMaxDevices(type, content, batchDevices, hsApi);
const batchMessages = await this._encryptForMaxDevices(type, content, batchDevices, hsApi, log);
messages = messages.concat(batchMessages);
}
return messages;
}
async _encryptForMaxDevices(type, content, devices, hsApi) {
async _encryptForMaxDevices(type, content, devices, hsApi, log) {
// TODO: see if we can only hold some of the locks until after the /keys/claim call (if needed)
// take a lock on all senderKeys so decryption and other calls to encrypt (should not happen)
// don't modify the sessions at the same time
@ -75,16 +75,17 @@ export class Encryption {
let encryptionTargets = [];
try {
if (devicesWithoutSession.length) {
const newEncryptionTargets = await this._createNewSessions(
devicesWithoutSession, hsApi, timestamp);
const newEncryptionTargets = await log.wrap("create sessions", log => this._createNewSessions(
devicesWithoutSession, hsApi, timestamp, log));
encryptionTargets = encryptionTargets.concat(newEncryptionTargets);
}
await this._loadSessions(existingEncryptionTargets);
encryptionTargets = encryptionTargets.concat(existingEncryptionTargets);
const messages = encryptionTargets.map(target => {
const encryptLog = {l: "encrypt", targets: encryptionTargets.length};
const messages = log.wrap(encryptLog, () => encryptionTargets.map(target => {
const encryptedContent = this._encryptForDevice(type, content, target);
return new EncryptedMessage(encryptedContent, target.device);
});
}));
await this._storeSessions(encryptionTargets, timestamp);
return messages;
} finally {
@ -149,8 +150,8 @@ export class Encryption {
}
}
async _createNewSessions(devicesWithoutSession, hsApi, timestamp) {
const newEncryptionTargets = await this._claimOneTimeKeys(hsApi, devicesWithoutSession);
async _createNewSessions(devicesWithoutSession, hsApi, timestamp, log) {
const newEncryptionTargets = await log.wrap("claim", log => this._claimOneTimeKeys(hsApi, devicesWithoutSession, log));
try {
for (const target of newEncryptionTargets) {
const {device, oneTimeKey} = target;
@ -166,7 +167,7 @@ export class Encryption {
return newEncryptionTargets;
}
async _claimOneTimeKeys(hsApi, deviceIdentities) {
async _claimOneTimeKeys(hsApi, deviceIdentities, log) {
// create a Map<userId, Map<deviceId, deviceIdentity>>
const devicesByUser = groupByWithCreator(deviceIdentities,
device => device.userId,
@ -183,11 +184,10 @@ export class Encryption {
const claimResponse = await hsApi.claimKeys({
timeout: 10000,
one_time_keys: oneTimeKeys
}).response();
}, {log}).response();
if (Object.keys(claimResponse.failures).length) {
console.warn("failures for claiming one time keys", oneTimeKeys, claimResponse.failures);
log.log({l: "failures", servers: Object.keys(claimResponse.failures)}, log.level.Warn);
}
// TODO: log claimResponse.failures
const userKeyMap = claimResponse?.["one_time_keys"];
return this._verifyAndCreateOTKTargets(userKeyMap, devicesByUser);
}

5
src/matrix/room/AttachmentUpload.js
View file

@ -61,12 +61,13 @@ export class AttachmentUpload {
}
/** @package */
async upload(hsApi, progressCallback) {
async upload(hsApi, progressCallback, log) {
this._uploadRequest = hsApi.uploadAttachment(this._transferredBlob, this._filename, {
uploadProgress: sentBytes => {
this._sentBytes = sentBytes;
progressCallback();
}
},
log
});
const {content_uri} = await this._uploadRequest.response();
this._mxcUrl = content_uri;

22
src/matrix/room/Room.js
View file

@ -361,17 +361,26 @@ export class Room extends EventEmitter {
}
/** @public */
sendEvent(eventType, content, attachments) {
return this._sendQueue.enqueueEvent(eventType, content, attachments);
sendEvent(eventType, content, attachments, log = null) {
this._platform.logger.wrapOrRun(log, "send", log => {
log.set("id", this.id);
return this._sendQueue.enqueueEvent(eventType, content, attachments, log);
});
}
/** @public */
async ensureMessageKeyIsShared() {
return this._roomEncryption?.ensureMessageKeyIsShared(this._hsApi);
async ensureMessageKeyIsShared(log = null) {
if (!this._roomEncryption) {
return;
}
return this._platform.logger.wrapOrRun(log, "ensureMessageKeyIsShared", log => {
log.set("id", this.id);
return this._roomEncryption.ensureMessageKeyIsShared(this._hsApi, log);
});
}
/** @public */
async loadMemberList() {
async loadMemberList(log = null) {
if (this._memberList) {
// TODO: also await fetchOrLoadMembers promise here
this._memberList.retain();
@ -385,7 +394,8 @@ export class Room extends EventEmitter {
syncToken: this._getSyncToken(),
// to handle race between /members and /sync
setChangedMembersMap: map => this._changedMembersDuringSync = map,
});
log,
}, this._platform.logger);
this._memberList = new MemberList({
members,
closeCallback: () => { this._memberList = null; }

10
src/matrix/room/members/load.js
View file

@ -25,13 +25,13 @@ async function loadMembers({roomId, storage}) {
return memberDatas.map(d => new RoomMember(d));
}
async function fetchMembers({summary, syncToken, roomId, hsApi, storage, setChangedMembersMap}) {
async function fetchMembers({summary, syncToken, roomId, hsApi, storage, setChangedMembersMap}, log) {
// if any members are changed by sync while we're fetching members,
// they will end up here, so we check not to override them
const changedMembersDuringSync = new Map();
setChangedMembersMap(changedMembersDuringSync);
const memberResponse = await hsApi.members(roomId, {at: syncToken}).response();
const memberResponse = await hsApi.members(roomId, {at: syncToken}, {log}).response();
const txn = storage.readWriteTxn([
storage.storeNames.roomSummary,
@ -48,6 +48,7 @@ async function fetchMembers({summary, syncToken, roomId, hsApi, storage, setChan
if (!Array.isArray(memberEvents)) {
throw new Error("malformed");
}
log.set("members", memberEvents.length);
members = await Promise.all(memberEvents.map(async memberEvent => {
const userId = memberEvent?.state_key;
if (!userId) {
@ -80,10 +81,11 @@ async function fetchMembers({summary, syncToken, roomId, hsApi, storage, setChan
return members;
}
export async function fetchOrLoadMembers(options) {
export async function fetchOrLoadMembers(options, logger) {
const {summary} = options;
if (!summary.data.hasFetchedMembers) {
return fetchMembers(options);
// we only want to log if we fetch members, so start or continue the optional log operation here
return logger.wrapOrRun(options.log, "fetchMembers", log => fetchMembers(options, log));
} else {
return loadMembers(options);
}

18
src/matrix/room/sending/PendingEvent.js
View file

@ -100,7 +100,7 @@ export class PendingEvent {
return this._attachments && Object.values(this._attachments).reduce((t, a) => t + a.sentBytes, 0);
}
async uploadAttachments(hsApi) {
async uploadAttachments(hsApi, log) {
if (!this.needsUpload) {
return;
}
@ -111,7 +111,10 @@ export class PendingEvent {
this._status = SendStatus.EncryptingAttachments;
this._emitUpdate("status");
for (const attachment of Object.values(this._attachments)) {
await attachment.encrypt();
await log.wrap("encrypt", () => {
log.set("size", attachment.size);
return attachment.encrypt()
});
if (this.aborted) {
throw new AbortError();
}
@ -123,8 +126,11 @@ export class PendingEvent {
// upload smallest attachments first
entries.sort(([, a1], [, a2]) => a1.size - a2.size);
for (const [urlPath, attachment] of entries) {
await attachment.upload(hsApi, () => {
await log.wrap("upload", log => {
log.set("size", attachment.size);
return attachment.upload(hsApi, () => {
this._emitUpdate("attachmentsSentBytes");
}, log);
});
attachment.applyToContent(urlPath, this.content);
}
@ -148,8 +154,7 @@ export class PendingEvent {
return this._aborted;
}
async send(hsApi) {
console.log(`sending event ${this.eventType} in ${this.roomId}`);
async send(hsApi, log) {
this._status = SendStatus.Sending;
this._emitUpdate("status");
const eventType = this._data.encryptedEventType || this._data.eventType;
@ -158,7 +163,8 @@ export class PendingEvent {
this.roomId,
eventType,
this.txnId,
content
content,
{log}
);
const response = await this._sendRequest.response();
this._sendRequest = null;

62
src/matrix/room/sending/SendQueue.js
View file

@ -26,9 +26,6 @@ export class SendQueue {
this._storage = storage;
this._hsApi = hsApi;
this._pendingEvents = new SortedArray((a, b) => a.queueIndex - b.queueIndex);
if (pendingEvents.length) {
console.info(`SendQueue for room ${roomId} has ${pendingEvents.length} pending events`, pendingEvents);
}
this._pendingEvents.setManyUnsorted(pendingEvents.map(data => this._createPendingEvent(data)));
this._isSending = false;
this._offline = false;
@ -49,43 +46,49 @@ export class SendQueue {
this._roomEncryption = roomEncryption;
}
async _sendLoop() {
_sendLoop(log) {
this._isSending = true;
this._sendLoopLogItem = log.runDetached("send queue flush", async log => {
try {
for (let i = 0; i < this._pendingEvents.length; i += 1) {
await log.wrap("send event", async log => {
const pendingEvent = this._pendingEvents.get(i);
log.set("id", pendingEvent.queueIndex);
try {
await this._sendEvent(pendingEvent);
await this._sendEvent(pendingEvent, log);
} catch(err) {
if (err instanceof ConnectionError) {
this._offline = true;
break;
log.set("offline", true);
} else {
log.catch(err);
pendingEvent.setError(err);
}
}
});
}
} finally {
this._isSending = false;
this._sendLoopLogItem = null;
}
});
}
async _sendEvent(pendingEvent) {
async _sendEvent(pendingEvent, log) {
if (pendingEvent.needsUpload) {
await pendingEvent.uploadAttachments(this._hsApi);
console.log("attachments upload, content is now", pendingEvent.content);
await log.wrap("upload attachments", log => pendingEvent.uploadAttachments(this._hsApi, log));
await this._tryUpdateEvent(pendingEvent);
}
if (pendingEvent.needsEncryption) {
pendingEvent.setEncrypting();
const {type, content} = await this._roomEncryption.encrypt(
pendingEvent.eventType, pendingEvent.content, this._hsApi);
const {type, content} = await log.wrap("encrypt", log => this._roomEncryption.encrypt(
pendingEvent.eventType, pendingEvent.content, this._hsApi, log));
pendingEvent.setEncrypted(type, content);
await this._tryUpdateEvent(pendingEvent);
}
if (pendingEvent.needsSending) {
await pendingEvent.send(this._hsApi);
console.log("writing remoteId");
await pendingEvent.send(this._hsApi, log);
await this._tryUpdateEvent(pendingEvent);
}
}
@ -134,19 +137,32 @@ export class SendQueue {
}
}
resumeSending() {
resumeSending(parentLog) {
this._offline = false;
if (this._pendingEvents.length) {
parentLog.wrap("resumeSending", log => {
log.set("id", this._roomId);
log.set("pendingEvents", this._pendingEvents.length);
if (!this._isSending) {
this._sendLoop();
this._sendLoop(log);
}
if (this._sendLoopLogItem) {
log.refDetached(this._sendLoopLogItem);
}
});
}
}
async enqueueEvent(eventType, content, attachments) {
async enqueueEvent(eventType, content, attachments, log) {
const pendingEvent = await this._createAndStoreEvent(eventType, content, attachments);
this._pendingEvents.set(pendingEvent);
console.log("added to _pendingEvents set", this._pendingEvents.length);
log.set("queueIndex", pendingEvent.queueIndex);
log.set("pendingEvents", this._pendingEvents.length);
if (!this._isSending && !this._offline) {
this._sendLoop();
this._sendLoop(log);
}
if (this._sendLoopLogItem) {
log.refDetached(this._sendLoopLogItem);
}
}
@ -156,34 +172,25 @@ export class SendQueue {
async _tryUpdateEvent(pendingEvent) {
const txn = this._storage.readWriteTxn([this._storage.storeNames.pendingEvents]);
console.log("_tryUpdateEvent: got txn");
try {
// pendingEvent might have been removed already here
// by a racing remote echo, so check first so we don't recreate it
console.log("_tryUpdateEvent: before exists");
if (await txn.pendingEvents.exists(pendingEvent.roomId, pendingEvent.queueIndex)) {
console.log("_tryUpdateEvent: inside if exists");
txn.pendingEvents.update(pendingEvent.data);
}
console.log("_tryUpdateEvent: after exists");
} catch (err) {
txn.abort();
console.log("_tryUpdateEvent: error", err);
throw err;
}
console.log("_tryUpdateEvent: try complete");
await txn.complete();
}
async _createAndStoreEvent(eventType, content, attachments) {
console.log("_createAndStoreEvent");
const txn = this._storage.readWriteTxn([this._storage.storeNames.pendingEvents]);
let pendingEvent;
try {
const pendingEventsStore = txn.pendingEvents;
console.log("_createAndStoreEvent getting maxQueueIndex");
const maxQueueIndex = await pendingEventsStore.getMaxQueueIndex(this._roomId) || 0;
console.log("_createAndStoreEvent got maxQueueIndex", maxQueueIndex);
const queueIndex = maxQueueIndex + 1;
pendingEvent = this._createPendingEvent({
roomId: this._roomId,
@ -194,7 +201,6 @@ export class SendQueue {
needsEncryption: !!this._roomEncryption,
needsUpload: !!attachments
}, attachments);
console.log("_createAndStoreEvent: adding to pendingEventsStore");
pendingEventsStore.add(pendingEvent.data);
} catch (err) {
txn.abort();