2019-11-12 12:29:07 +00:00
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/*
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2019-11-18 09:16:29 +00:00
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Copyright 2019 The Matrix.org Foundation C.I.C.
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2019-11-12 12:29:07 +00:00
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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2019-11-19 11:52:12 +00:00
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import PlatformPeg from "../PlatformPeg";
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2019-12-20 21:13:46 +00:00
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import {MatrixClientPeg} from "../MatrixClientPeg";
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2019-11-12 12:29:07 +00:00
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2020-01-15 11:05:02 +00:00
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import Matrix from 'matrix-js-sdk';
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import EventTimelineSet from 'matrix-js-sdk/lib/models/event-timeline-set';
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import EventTimeline from 'matrix-js-sdk/lib/models/event-timeline';
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import MatrixEvent from 'matrix-js-sdk/lib/models/event';
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import RoomMember from 'matrix-js-sdk/lib/models/room-member';
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2019-11-20 11:47:20 +00:00
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/*
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2019-11-12 12:29:07 +00:00
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* Event indexing class that wraps the platform specific event indexing.
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*/
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2019-11-18 13:30:07 +00:00
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export default class EventIndex {
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2019-11-12 12:29:07 +00:00
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constructor() {
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2019-11-13 14:57:12 +00:00
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this.crawlerCheckpoints = [];
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2019-11-12 12:29:07 +00:00
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// The time that the crawler will wait between /rooms/{room_id}/messages
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// requests
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2019-11-13 15:35:04 +00:00
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this._crawlerTimeout = 3000;
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2019-11-13 15:35:26 +00:00
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// The maximum number of events our crawler should fetch in a single
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// crawl.
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this._eventsPerCrawl = 100;
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2019-11-18 14:04:22 +00:00
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this._crawler = null;
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2019-11-12 12:29:07 +00:00
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this.liveEventsForIndex = new Set();
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}
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2019-11-14 13:13:49 +00:00
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async init() {
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2019-11-13 11:25:16 +00:00
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const indexManager = PlatformPeg.get().getEventIndexingManager();
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2019-11-21 09:38:21 +00:00
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2019-11-19 09:46:18 +00:00
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await indexManager.initEventIndex();
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2019-11-21 09:38:21 +00:00
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console.log("EventIndex: Successfully initialized the event index");
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this.crawlerCheckpoints = await indexManager.loadCheckpoints();
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console.log("EventIndex: Loaded checkpoints", this.crawlerCheckpoints);
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2019-11-19 09:46:18 +00:00
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this.registerListeners();
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}
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registerListeners() {
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const client = MatrixClientPeg.get();
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2019-11-20 11:30:03 +00:00
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client.on('sync', this.onSync);
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client.on('Room.timeline', this.onRoomTimeline);
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client.on('Event.decrypted', this.onEventDecrypted);
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client.on('Room.timelineReset', this.onTimelineReset);
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2019-11-19 09:46:18 +00:00
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}
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removeListeners() {
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const client = MatrixClientPeg.get();
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if (client === null) return;
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2019-11-20 11:30:03 +00:00
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client.removeListener('sync', this.onSync);
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client.removeListener('Room.timeline', this.onRoomTimeline);
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client.removeListener('Event.decrypted', this.onEventDecrypted);
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client.removeListener('Room.timelineReset', this.onTimelineReset);
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2019-11-12 12:29:07 +00:00
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}
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2019-11-20 11:30:03 +00:00
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onSync = async (state, prevState, data) => {
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2019-11-13 11:25:16 +00:00
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const indexManager = PlatformPeg.get().getEventIndexingManager();
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2019-11-12 12:29:07 +00:00
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if (prevState === "PREPARED" && state === "SYNCING") {
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const addInitialCheckpoints = async () => {
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const client = MatrixClientPeg.get();
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const rooms = client.getRooms();
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const isRoomEncrypted = (room) => {
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return client.isRoomEncrypted(room.roomId);
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};
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2019-11-18 09:35:57 +00:00
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// We only care to crawl the encrypted rooms, non-encrypted.
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// rooms can use the search provided by the homeserver.
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2019-11-12 12:29:07 +00:00
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const encryptedRooms = rooms.filter(isRoomEncrypted);
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Adding initial crawler checkpoints");
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2019-11-12 12:29:07 +00:00
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// Gather the prev_batch tokens and create checkpoints for
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// our message crawler.
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await Promise.all(encryptedRooms.map(async (room) => {
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const timeline = room.getLiveTimeline();
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const token = timeline.getPaginationToken("b");
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Got token for indexer",
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2019-11-12 12:29:07 +00:00
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room.roomId, token);
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const backCheckpoint = {
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roomId: room.roomId,
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token: token,
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direction: "b",
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};
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const forwardCheckpoint = {
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roomId: room.roomId,
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token: token,
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direction: "f",
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};
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2019-11-13 11:25:16 +00:00
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await indexManager.addCrawlerCheckpoint(backCheckpoint);
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await indexManager.addCrawlerCheckpoint(forwardCheckpoint);
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2019-11-13 14:57:12 +00:00
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this.crawlerCheckpoints.push(backCheckpoint);
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this.crawlerCheckpoints.push(forwardCheckpoint);
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2019-11-12 12:29:07 +00:00
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}));
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};
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// If our indexer is empty we're most likely running Riot the
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// first time with indexing support or running it with an
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// initial sync. Add checkpoints to crawl our encrypted rooms.
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2019-11-13 11:25:16 +00:00
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const eventIndexWasEmpty = await indexManager.isEventIndexEmpty();
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2019-11-12 12:29:07 +00:00
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if (eventIndexWasEmpty) await addInitialCheckpoints();
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// Start our crawler.
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this.startCrawler();
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return;
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}
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if (prevState === "SYNCING" && state === "SYNCING") {
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// A sync was done, presumably we queued up some live events,
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// commit them now.
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Committing events");
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2019-11-13 11:25:16 +00:00
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await indexManager.commitLiveEvents();
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2019-11-12 12:29:07 +00:00
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return;
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}
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}
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2019-11-20 11:30:03 +00:00
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onRoomTimeline = async (ev, room, toStartOfTimeline, removed, data) => {
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2019-11-12 12:29:07 +00:00
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// We only index encrypted rooms locally.
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if (!MatrixClientPeg.get().isRoomEncrypted(room.roomId)) return;
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// If it isn't a live event or if it's redacted there's nothing to
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// do.
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if (toStartOfTimeline || !data || !data.liveEvent
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|| ev.isRedacted()) {
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return;
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}
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// If the event is not yet decrypted mark it for the
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// Event.decrypted callback.
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if (ev.isBeingDecrypted()) {
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const eventId = ev.getId();
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this.liveEventsForIndex.add(eventId);
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} else {
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// If the event is decrypted or is unencrypted add it to the
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// index now.
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await this.addLiveEventToIndex(ev);
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}
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}
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2019-11-20 11:30:03 +00:00
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onEventDecrypted = async (ev, err) => {
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2019-11-12 12:29:07 +00:00
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const eventId = ev.getId();
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// If the event isn't in our live event set, ignore it.
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if (!this.liveEventsForIndex.delete(eventId)) return;
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if (err) return;
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await this.addLiveEventToIndex(ev);
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}
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async addLiveEventToIndex(ev) {
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2019-11-13 11:25:16 +00:00
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const indexManager = PlatformPeg.get().getEventIndexingManager();
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2019-11-12 12:29:07 +00:00
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if (["m.room.message", "m.room.name", "m.room.topic"]
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.indexOf(ev.getType()) == -1) {
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return;
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}
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2020-01-15 09:41:33 +00:00
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const jsonEvent = ev.toJSON();
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let e;
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if (ev.isEncrypted()) e = jsonEvent.decrypted;
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else e = jsonEvent;
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2019-11-12 12:29:07 +00:00
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const profile = {
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displayname: ev.sender.rawDisplayName,
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avatar_url: ev.sender.getMxcAvatarUrl(),
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};
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2019-11-13 11:25:16 +00:00
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indexManager.addEventToIndex(e, profile);
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2019-11-12 12:29:07 +00:00
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}
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2019-11-18 14:04:22 +00:00
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async crawlerFunc() {
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2019-11-12 12:29:07 +00:00
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// TODO either put this in a better place or find a library provided
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// method that does this.
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const sleep = async (ms) => {
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return new Promise(resolve => setTimeout(resolve, ms));
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};
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let cancelled = false;
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Started crawler function");
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2019-11-12 12:29:07 +00:00
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const client = MatrixClientPeg.get();
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2019-11-13 11:25:16 +00:00
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const indexManager = PlatformPeg.get().getEventIndexingManager();
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2019-11-12 12:29:07 +00:00
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2019-11-18 14:04:22 +00:00
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this._crawler = {};
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this._crawler.cancel = () => {
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2019-11-12 12:29:07 +00:00
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cancelled = true;
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};
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while (!cancelled) {
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// This is a low priority task and we don't want to spam our
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2019-11-18 09:35:57 +00:00
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// homeserver with /messages requests so we set a hefty timeout
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2019-11-12 12:29:07 +00:00
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// here.
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2019-11-13 15:47:21 +00:00
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await sleep(this._crawlerTimeout);
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2019-11-12 12:29:07 +00:00
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Running the crawler loop.");
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2019-11-12 12:29:07 +00:00
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if (cancelled) {
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break;
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}
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2019-11-13 14:57:12 +00:00
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const checkpoint = this.crawlerCheckpoints.shift();
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2019-11-12 12:29:07 +00:00
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/// There is no checkpoint available currently, one may appear if
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// a sync with limited room timelines happens, so go back to sleep.
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if (checkpoint === undefined) {
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continue;
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}
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: crawling using checkpoint", checkpoint);
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2019-11-12 12:29:07 +00:00
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// We have a checkpoint, let us fetch some messages, again, very
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2019-11-18 09:35:57 +00:00
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// conservatively to not bother our homeserver too much.
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2019-11-12 12:29:07 +00:00
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const eventMapper = client.getEventMapper();
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// TODO we need to ensure to use member lazy loading with this
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// request so we get the correct profiles.
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let res;
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try {
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res = await client._createMessagesRequest(
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2019-11-13 15:35:26 +00:00
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checkpoint.roomId, checkpoint.token, this._eventsPerCrawl,
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2019-11-12 12:29:07 +00:00
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checkpoint.direction);
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} catch (e) {
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Error crawling events:", e);
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2019-11-13 14:57:12 +00:00
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this.crawlerCheckpoints.push(checkpoint);
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2019-11-13 11:25:16 +00:00
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continue;
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2019-11-12 12:29:07 +00:00
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}
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if (res.chunk.length === 0) {
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2019-11-13 14:26:27 +00:00
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console.log("EventIndex: Done with the checkpoint", checkpoint);
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2019-11-12 12:29:07 +00:00
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// We got to the start/end of our timeline, lets just
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// delete our checkpoint and go back to sleep.
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2019-11-13 11:25:16 +00:00
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await indexManager.removeCrawlerCheckpoint(checkpoint);
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2019-11-12 12:29:07 +00:00
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continue;
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}
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// Convert the plain JSON events into Matrix events so they get
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// decrypted if necessary.
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const matrixEvents = res.chunk.map(eventMapper);
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let stateEvents = [];
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if (res.state !== undefined) {
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stateEvents = res.state.map(eventMapper);
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}
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const profiles = {};
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stateEvents.forEach(ev => {
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if (ev.event.content &&
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ev.event.content.membership === "join") {
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profiles[ev.event.sender] = {
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displayname: ev.event.content.displayname,
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avatar_url: ev.event.content.avatar_url,
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};
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}
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});
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const decryptionPromises = [];
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matrixEvents.forEach(ev => {
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if (ev.isBeingDecrypted() || ev.isDecryptionFailure()) {
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// TODO the decryption promise is a private property, this
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// should either be made public or we should convert the
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// event that gets fired when decryption is done into a
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// promise using the once event emitter method:
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// https://nodejs.org/api/events.html#events_events_once_emitter_name
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decryptionPromises.push(ev._decryptionPromise);
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}
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});
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// Let us wait for all the events to get decrypted.
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await Promise.all(decryptionPromises);
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// We filter out events for which decryption failed, are redacted
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// or aren't of a type that we know how to index.
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const isValidEvent = (value) => {
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return ([
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"m.room.message",
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"m.room.name",
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"m.room.topic",
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].indexOf(value.getType()) >= 0
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&& !value.isRedacted() && !value.isDecryptionFailure()
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);
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// TODO do we need to check if the event has all the valid
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// attributes?
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};
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2019-11-18 14:04:44 +00:00
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// TODO if there are no events at this point we're missing a lot
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// decryption keys, do we want to retry this checkpoint at a later
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2019-11-12 12:29:07 +00:00
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// stage?
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const filteredEvents = matrixEvents.filter(isValidEvent);
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2019-11-13 14:26:27 +00:00
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// Let us convert the events back into a format that EventIndex can
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2019-11-12 12:29:07 +00:00
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// consume.
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const events = filteredEvents.map((ev) => {
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const jsonEvent = ev.toJSON();
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let e;
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if (ev.isEncrypted()) e = jsonEvent.decrypted;
|
|
|
|
else e = jsonEvent;
|
|
|
|
|
|
|
|
let profile = {};
|
|
|
|
if (e.sender in profiles) profile = profiles[e.sender];
|
|
|
|
const object = {
|
|
|
|
event: e,
|
|
|
|
profile: profile,
|
|
|
|
};
|
|
|
|
return object;
|
|
|
|
});
|
|
|
|
|
|
|
|
// Create a new checkpoint so we can continue crawling the room for
|
|
|
|
// messages.
|
|
|
|
const newCheckpoint = {
|
|
|
|
roomId: checkpoint.roomId,
|
|
|
|
token: res.end,
|
|
|
|
fullCrawl: checkpoint.fullCrawl,
|
|
|
|
direction: checkpoint.direction,
|
|
|
|
};
|
|
|
|
|
|
|
|
console.log(
|
2019-11-13 14:26:27 +00:00
|
|
|
"EventIndex: Crawled room",
|
2019-11-12 12:29:07 +00:00
|
|
|
client.getRoom(checkpoint.roomId).name,
|
|
|
|
"and fetched", events.length, "events.",
|
|
|
|
);
|
|
|
|
|
|
|
|
try {
|
2019-11-13 11:25:16 +00:00
|
|
|
const eventsAlreadyAdded = await indexManager.addHistoricEvents(
|
2019-11-12 12:29:07 +00:00
|
|
|
events, newCheckpoint, checkpoint);
|
|
|
|
// If all events were already indexed we assume that we catched
|
|
|
|
// up with our index and don't need to crawl the room further.
|
|
|
|
// Let us delete the checkpoint in that case, otherwise push
|
|
|
|
// the new checkpoint to be used by the crawler.
|
|
|
|
if (eventsAlreadyAdded === true && newCheckpoint.fullCrawl !== true) {
|
2019-11-13 14:26:27 +00:00
|
|
|
console.log("EventIndex: Checkpoint had already all events",
|
2019-11-12 12:29:07 +00:00
|
|
|
"added, stopping the crawl", checkpoint);
|
2019-11-13 11:25:16 +00:00
|
|
|
await indexManager.removeCrawlerCheckpoint(newCheckpoint);
|
2019-11-12 12:29:07 +00:00
|
|
|
} else {
|
2019-11-13 14:57:12 +00:00
|
|
|
this.crawlerCheckpoints.push(newCheckpoint);
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|
|
|
|
} catch (e) {
|
2019-11-13 14:26:27 +00:00
|
|
|
console.log("EventIndex: Error durring a crawl", e);
|
2019-11-18 14:04:44 +00:00
|
|
|
// An error occurred, put the checkpoint back so we
|
2019-11-12 12:29:07 +00:00
|
|
|
// can retry.
|
2019-11-13 14:57:12 +00:00
|
|
|
this.crawlerCheckpoints.push(checkpoint);
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-11-18 14:04:22 +00:00
|
|
|
this._crawler = null;
|
|
|
|
|
2019-11-13 14:26:27 +00:00
|
|
|
console.log("EventIndex: Stopping crawler function");
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|
|
|
|
|
2019-11-20 11:30:03 +00:00
|
|
|
onTimelineReset = async (room, timelineSet, resetAllTimelines) => {
|
2019-11-19 09:46:18 +00:00
|
|
|
if (room === null) return;
|
|
|
|
|
2019-11-13 11:25:16 +00:00
|
|
|
const indexManager = PlatformPeg.get().getEventIndexingManager();
|
2019-11-13 09:37:20 +00:00
|
|
|
if (!MatrixClientPeg.get().isRoomEncrypted(room.roomId)) return;
|
2019-11-12 12:29:07 +00:00
|
|
|
|
|
|
|
const timeline = room.getLiveTimeline();
|
|
|
|
const token = timeline.getPaginationToken("b");
|
|
|
|
|
|
|
|
const backwardsCheckpoint = {
|
|
|
|
roomId: room.roomId,
|
|
|
|
token: token,
|
|
|
|
fullCrawl: false,
|
|
|
|
direction: "b",
|
|
|
|
};
|
|
|
|
|
2019-11-13 14:26:27 +00:00
|
|
|
console.log("EventIndex: Added checkpoint because of a limited timeline",
|
2019-11-13 14:23:08 +00:00
|
|
|
backwardsCheckpoint);
|
2019-11-12 12:29:07 +00:00
|
|
|
|
2019-11-13 11:25:16 +00:00
|
|
|
await indexManager.addCrawlerCheckpoint(backwardsCheckpoint);
|
2019-11-12 12:29:07 +00:00
|
|
|
|
2019-11-13 14:57:12 +00:00
|
|
|
this.crawlerCheckpoints.push(backwardsCheckpoint);
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
startCrawler() {
|
2019-11-18 14:04:22 +00:00
|
|
|
if (this._crawler !== null) return;
|
|
|
|
this.crawlerFunc();
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|
|
|
|
|
2019-11-14 15:13:22 +00:00
|
|
|
stopCrawler() {
|
2019-11-18 14:04:22 +00:00
|
|
|
if (this._crawler === null) return;
|
|
|
|
this._crawler.cancel();
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|
2019-11-12 14:39:26 +00:00
|
|
|
|
2019-11-14 15:13:22 +00:00
|
|
|
async close() {
|
|
|
|
const indexManager = PlatformPeg.get().getEventIndexingManager();
|
2019-11-19 09:46:18 +00:00
|
|
|
this.removeListeners();
|
2019-11-14 15:13:22 +00:00
|
|
|
this.stopCrawler();
|
|
|
|
return indexManager.closeEventIndex();
|
|
|
|
}
|
|
|
|
|
2019-11-12 14:39:26 +00:00
|
|
|
async search(searchArgs) {
|
2019-11-13 11:25:16 +00:00
|
|
|
const indexManager = PlatformPeg.get().getEventIndexingManager();
|
|
|
|
return indexManager.searchEventIndex(searchArgs);
|
2019-11-12 14:39:26 +00:00
|
|
|
}
|
2020-01-15 11:05:02 +00:00
|
|
|
|
|
|
|
async populateFileTimeline(room, timelineSet) {
|
|
|
|
const client = MatrixClientPeg.get();
|
|
|
|
const indexManager = PlatformPeg.get().getEventIndexingManager();
|
|
|
|
|
|
|
|
// Get our events from the event index.
|
|
|
|
const events = await indexManager.loadFileEvents(
|
|
|
|
{
|
|
|
|
roomId: room.roomId,
|
|
|
|
limit: 10
|
|
|
|
}
|
|
|
|
);
|
|
|
|
|
|
|
|
let eventMapper = client.getEventMapper();
|
|
|
|
|
|
|
|
// Turn the events into MatrixEvent objects.
|
|
|
|
const matrixEvents = events.map(e => {
|
|
|
|
const matrixEvent = eventMapper(e.event);
|
|
|
|
|
|
|
|
const member = new RoomMember(room.roomId, matrixEvent.getSender());
|
|
|
|
|
|
|
|
// We can't really reconstruct the whole room state from our
|
|
|
|
// EventIndex to calculate the correct display name. Use the
|
|
|
|
// disambiguated form always instead.
|
|
|
|
member.name = e.profile.displayname + " (" + matrixEvent.getSender() + ")";
|
|
|
|
|
|
|
|
// This is sets the avatar URL.
|
|
|
|
const memberEvent = eventMapper(
|
|
|
|
{
|
|
|
|
content: {
|
|
|
|
membership: "join",
|
|
|
|
avatar_url: e.profile.avatar_url,
|
|
|
|
displayname: e.profile.displayname,
|
|
|
|
},
|
|
|
|
type: "m.room.member",
|
|
|
|
event_id: matrixEvent.getId() + ":eventIndex",
|
|
|
|
room_id: matrixEvent.getRoomId(),
|
|
|
|
sender: matrixEvent.getSender(),
|
|
|
|
origin_server_ts: matrixEvent.getTs(),
|
|
|
|
state_key: matrixEvent.getSender()
|
|
|
|
}
|
|
|
|
);
|
|
|
|
|
|
|
|
// We set this manually to avoid emitting RoomMember.membership and
|
|
|
|
// RoomMember.name events.
|
|
|
|
member.events.member = memberEvent;
|
|
|
|
matrixEvent.sender = member;
|
|
|
|
|
|
|
|
return matrixEvent;
|
|
|
|
});
|
|
|
|
|
|
|
|
// Add the events to the live timeline of the file panel.
|
|
|
|
matrixEvents.forEach(e => {
|
|
|
|
if (!timelineSet.eventIdToTimeline(e.getId())) {
|
|
|
|
const liveTimeline = timelineSet.getLiveTimeline();
|
|
|
|
timelineSet.addEventToTimeline(e, liveTimeline, true)
|
|
|
|
}
|
|
|
|
});
|
|
|
|
|
|
|
|
// Set the pagination token to the oldest event that we retrieved.
|
|
|
|
timelineSet.getLiveTimeline().setPaginationToken("", EventTimeline.BACKWARDS);
|
|
|
|
}
|
2019-11-12 12:29:07 +00:00
|
|
|
}
|