mirrors/vector-im-hydrogen-web
1
0
Fork 0
mirror of https://github.com/vector-im/hydrogen-web.git synced 2024-12-22 11:05:03 +01:00
Code Issues Projects Releases Wiki Activity

its syncing, sort off

Browse Source
This commit is contained in:
Bruno Windels 2019-02-10 21:25:29 +01:00
parent c05e40188b
commit b57c5abdd6
26 changed files with 466 additions and 274 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
.eslintrc.js Normal file
View File

@ -0,0 +1,14 @@
module.exports = {
"env": {
"browser": true,
"es6": true
},
"extends": "eslint:recommended",
"parserOptions": {
"ecmaVersion": 2018,
"sourceType": "module"
},
"rules": {
"no-console": "off"
}
};

2
.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
*.sublime-project
*.sublime-workspace

1
doc/TODO.md
View File

@ -1,6 +1,7 @@
# Minimal thing to get working
- finish summary store
- move "sdk" bits over to "matrix" directory
- add eventemitter
- make sync work
- store summaries

10
index.html
View File

@ -2,8 +2,16 @@
<html>
<head>
<meta charset="utf-8">
<script type="module" src="src/main.js"></script>
</head>
<body>
<p id="syncstatus"></p>
<div><button id="stopsync">stop syncing</button></div>
<script>
const label = document.getElementById("syncstatus");
const button = document.getElementById("stopsync");
import("./src/main.js").then(main => {
main.default(label, button);
});
</script>
</body>
</html>

22
package.json Normal file
View File

@ -0,0 +1,22 @@
{
"name": "morpheusjs",
"version": "1.0.0",
"description": "A javascript matrix client prototype, trying to minize RAM usage by offloading as much as possible to IndexedDB",
"main": "index.js",
"directories": {
"doc": "doc"
},
"scripts": {
"test": "node --experimental-modules --loader ../js-inline-tests/src/resolve-hook.mjs ../js-inline-tests/src/main.mjs --entryPoint src/main.js --force-esm"
},
"repository": {
"type": "git",
"url": "git+https://github.com/bwindels/morpheusjs.git"
},
"author": "",
"license": "ISC",
"bugs": {
"url": "https://github.com/bwindels/morpheusjs/issues"
},
"homepage": "https://github.com/bwindels/morpheusjs#readme"
}

8
src/error.js
View File

@ -1,9 +1,13 @@
export class HomeServerError extends Error {
constructor(body) {
super(body.error);
constructor(method, url, body) {
super(`${body.error} on ${method} ${url}`);
this.errcode = body.errcode;
}
}
export class StorageError extends Error {
}
export class RequestAbortError extends Error {
}

69
src/event-emitter.js Normal file
View File

@ -0,0 +1,69 @@
export default class EventEmitter {
constructor() {
this._handlersByName = {};
}
emit(name, value) {
const handlers = this._handlersByName[name];
if (handlers) {
for(const h of handlers) {
h(value);
}
}
}
on(name, callback) {
let handlers = this._handlersByName[name];
if (!handlers) {
this._handlersByName[name] = handlers = new Set();
}
handlers.add(callback);
}
off(name, callback) {
const handlers = this._handlersByName[name];
if (handlers) {
handlers.delete(callback);
if (handlers.length === 0) {
delete this._handlersByName[name];
}
}
}
}
//#ifdef TESTS
export function tests() {
return {
test_on_off(assert) {
let counter = 0;
const e = new EventEmitter();
const callback = () => counter += 1;
e.on("change", callback);
e.emit("change");
e.off("change", callback);
e.emit("change");
assert.equal(counter, 1);
},
test_emit_value(assert) {
let value = 0;
const e = new EventEmitter();
const callback = (v) => value = v;
e.on("change", callback);
e.emit("change", 5);
e.off("change", callback);
assert.equal(value, 5);
},
test_double_on(assert) {
let counter = 0;
const e = new EventEmitter();
const callback = () => counter += 1;
e.on("change", callback);
e.on("change", callback);
e.emit("change");
e.off("change", callback);
assert.equal(counter, 1);
}
};
}
//#endif

12
src/hs-api.js
View File

@ -1,3 +1,5 @@
import {HomeServerError} from "./error.js";
class RequestWrapper {
constructor(promise, controller) {
this._promise = promise;
@ -47,13 +49,13 @@ export default class HomeServerApi {
body: bodyString,
signal: controller.signal
});
promise = promise.then(response => {
promise = promise.then(async (response) => {
if (response.ok) {
return response.json();
return await response.json();
} else {
switch (response.status) {
default:
throw new HomeServerError(response.json())
throw new HomeServerError(method, url, await response.json())
}
}
});
@ -68,8 +70,8 @@ export default class HomeServerApi {
return this._request("GET", csPath, queryParams, body);
}
sync(timeout = 0, since = undefined) {
return this._get("/sync", {since, timeout});
sync(since, filter, timeout) {
return this._get("/sync", {since, timeout, filter});
}
passwordLogin(username, password) {

58
src/main.js
View File

@ -1,6 +1,7 @@
import HomeServerApi from "./hs-api.js";
import Session from "./session.js";
import createIdbStorage from "./storage/idb/create.js";
import Sync from "./sync.js";
const HOST = "localhost";
const HOMESERVER = `http://${HOST}:8008`;
@ -31,30 +32,37 @@ async function login(username, password, homeserver) {
return {sessionId, loginData};
}
async function main() {
let sessionId = getSessionId(USER_ID);
let loginData;
if (!sessionId) {
({sessionId, loginData} = await login(USERNAME, PASSWORD, HOMESERVER));
// eslint-disable-next-line no-unused-vars
export default async function main(label, button) {
try {
let sessionId = getSessionId(USER_ID);
let loginData;
if (!sessionId) {
({sessionId, loginData} = await login(USERNAME, PASSWORD, HOMESERVER));
}
const storage = await createIdbStorage(`morpheus_session_${sessionId}`);
const session = new Session(storage);
if (loginData) {
await session.setLoginData(loginData);
}
await session.load();
const hsApi = new HomeServerApi(HOMESERVER, session.accessToken);
console.log("session loaded");
if (!session.syncToken) {
console.log("session needs initial sync");
}
const sync = new Sync(hsApi, session, storage);
await sync.start();
label.innerText = "sync running";
button.addEventListener("click", () => sync.stop());
sync.on("error", err => {
label.innerText = "sync error";
console.error("sync error", err);
});
sync.on("stopped", () => {
label.innerText = "sync stopped";
});
} catch(err) {
console.error(err);
}
const storage = await createIdbStorage(`morpheus_session_${sessionId}`);
const session = new Session(storage);
if (loginData) {
await session.setLoginData(loginData);
}
await session.load();
const hsApi = new HomeServerApi(HOMESERVER, session.accessToken);
console.log("session loaded");
if (!session.syncToken) {
console.log("session needs initial sync");
}
return;
const sync = new Sync(hsApi, session, storage);
await sync.start();
sync.on("error", err => {
console.error("sync error", err);
});
}
main().catch(err => console.error(err));

49
src/room/persister.js
View File

@ -1,51 +1,56 @@
class RoomPersister {
import SortKey from "../storage/sortkey.js";
export default class RoomPersister {
constructor(roomId) {
this._roomId = roomId;
this._lastSortKey = null;
this._lastSortKey = new SortKey();
}
async loadFromStorage(storage) {
const lastEvent = await storage.timeline.lastEvents(1);
async load(txn) {
//fetch key here instead?
const [lastEvent] = await txn.roomTimeline.lastEvents(this._roomId, 1);
if (lastEvent) {
this._lastSortKey = lastEvent.sortKey;
} else {
this._lastSortKey = new GapSortKey();
console.log("room persister load", this._roomId, lastEvent);
this._lastSortKey = new SortKey(lastEvent.sortKey);
}
}
async persistGapFill(...) {
// async persistGapFill(...) {
}
// }
async persistSync(roomResponse, txn) {
let nextKey;
let nextKey = this._lastSortKey;
const timeline = roomResponse.timeline;
// is limited true for initial sync???? or do we need to handle that as a special case?
// I suppose it will, yes
if (timeline.limited) {
nextKey = this._lastSortKey.nextKeyWithGap();
txn.timeline.appendGap(this._roomId, nextKey, {prev_batch: timeline.prev_batch});
nextKey = nextKey.nextKeyWithGap();
txn.roomTimeline.appendGap(this._roomId, nextKey, {prev_batch: timeline.prev_batch});
}
nextKey = this._lastSortKey.nextKey();
const startOfChunkSortKey = nextKey;
// const startOfChunkSortKey = nextKey;
if (timeline.events) {
for(const event of timeline.events) {
txn.timeline.appendEvent(this._roomId, nextKey, event);
nextKey = nextKey.nextKey();
txn.roomTimeline.appendEvent(this._roomId, nextKey, event);
}
}
// what happens here when the txn fails?
this._lastSortKey = nextKey;
// right thing to do? if the txn fails, not sure we'll continue anyways ...
// only advance the key once the transaction has
// succeeded
txn.complete().then(() => {
console.log("txn complete, setting key");
this._lastSortKey = nextKey;
});
// persist state
const state = roomResponse.state;
if (state.events) {
const promises = state.events.map((event) => {
txn.state.setStateEventAt(startOfChunkSortKey, event)
});
await Promise.all(promises);
for (const event of state.events) {
txn.roomState.setStateEvent(this._roomId, event)
}
}
}
}

21
src/room/room.js
View File

@ -1,20 +1,21 @@
class Room {
import RoomSummary from "./summary.js";
import RoomPersister from "./persister.js";
export default class Room {
constructor(roomId, storage) {
this._roomId = roomId;
this._storage = storage;
this._summary = new RoomSummary(this._roomId, this._storage);
this._summary = new RoomSummary(roomId);
this._persister = new RoomPersister(roomId);
}
async applyInitialSync(roomResponse, membership) {
async applySync(roomResponse, membership, txn) {
this._summary.applySync(roomResponse, membership, txn);
this._persister.persistSync(roomResponse, txn);
}
async applyIncrementalSync(roomResponse, membership) {
}
async load() {
load(summary, txn) {
this._summary.load(summary);
return this._persister.load(txn);
}
}

133
src/room/summary.js
View File

@ -1,24 +1,22 @@
const SUMMARY_NAME_COUNT = 3;
// import SummaryMembers from "./members";
function disambiguateMember(name, userId) {
return `${name} (${userId})`;
}
// could even split name calculation in a separate class
// as the summary will grow more
export class RoomSummary {
export default class RoomSummary {
constructor(roomId) {
this._members = new SummaryMembers();
// this._members = new SummaryMembers();
this._roomId = roomId;
this._name = null;
this._lastMessage = null;
this._unreadCount = null;
this._mentionCount = null;
this._isEncrypted = null;
this._isDirectMessage = null;
this._membership = null;
this._inviteCount = 0;
this._joinCount = 0;
this._calculatedName = null;
this._nameFromEvent = null;
this._lastMessageBody = null;
}
get name() {
return this._nameFromEvent || this._calculatedName;
return this._name || "Room without a name";
}
get lastMessage() {
@ -33,53 +31,59 @@ export class RoomSummary {
return this._joinCount;
}
async applySync(roomResponse) {
const changed = this._processSyncResponse(roomResponse);
async applySync(roomResponse, membership, txn) {
const changed = this._processSyncResponse(roomResponse, membership);
if (changed) {
await this._persist();
await this._persist(txn);
}
return changed;
}
async load() {
const summary = await storage.getSummary(this._roomId);
async load(summary) {
this._roomId = summary.roomId;
this._name = summary.name;
this._lastMessage = summary.lastMessage;
this._unreadCount = summary.unreadCount;
this._mentionCount = summary.mentionCount;
this._isEncrypted = summary.isEncrypted;
this._isDirectMessage = summary.isDirectMessage;
this._membership = summary.membership;
this._inviteCount = summary.inviteCount;
this._joinCount = summary.joinCount;
this._calculatedName = summary.calculatedName;
this._nameFromEvent = summary.nameFromEvent;
this._lastMessageBody = summary.lastMessageBody;
this._members = new SummaryMembers(summary.members);
}
_persist() {
_persist(txn) {
const summary = {
roomId: this._roomId,
heroes: this._heroes,
inviteCount: this._inviteCount,
joinCount: this._joinCount,
calculatedName: this._calculatedName,
nameFromEvent: this._nameFromEvent,
lastMessageBody: this._lastMessageBody,
members: this._members.asArray()
name: this._name,
lastMessageBody: this._lastMessageBody
};
return this.storage.saveSummary(this.room_id, summary);
return txn.roomSummary.set(summary);
}
_processSyncResponse(roomResponse) {
_processSyncResponse(roomResponse, membership) {
// lets not do lazy loading for now
// if (roomResponse.summary) {
// this._updateSummary(roomResponse.summary);
// }
let changed = false;
if (roomResponse.limited) {
if (membership !== this._membership) {
this._membership = membership;
changed = true;
}
if (roomResponse.state_events) {
changed = roomResponse.state_events.events.reduce((changed, e) => {
return this._processEvent(e) || changed;
}, changed);
}
changed = roomResponse.timeline.events.reduce((changed, e) => {
return this._processEvent(e) || changed;
}, changed);
if (roomResponse.timeline) {
changed = roomResponse.timeline.events.reduce((changed, e) => {
return this._processEvent(e) || changed;
}, changed);
}
return changed;
}
@ -87,8 +91,8 @@ export class RoomSummary {
_processEvent(event) {
if (event.type === "m.room.name") {
const newName = event.content && event.content.name;
if (newName !== this._nameFromEvent) {
this._nameFromEvent = newName;
if (newName !== this._name) {
this._name = newName;
return true;
}
} else if (event.type === "m.room.member") {
@ -108,25 +112,29 @@ export class RoomSummary {
_processMembership(event) {
let changed = false;
const prevMembership = event.prev_content && event.prev_content.membership;
const membership = event.content && event.content.membership;
if (!event.content) {
return changed;
}
const content = event.content;
const membership = content.membership;
// danger of a replayed event getting the count out of sync
// but summary api will solve this.
// otherwise we'd have to store all the member ids in here
if (membership !== prevMembership) {
switch (prevMembership) {
case "invite": --this._inviteCount;
case "join": --this._joinCount;
case "invite": --this._inviteCount; break;
case "join": --this._joinCount; break;
}
switch (membership) {
case "invite": ++this._inviteCount;
case "join": ++this._joinCount;
case "invite": ++this._inviteCount; break;
case "join": ++this._joinCount; break;
}
changed = true;
}
if (membership === "join" && content.name) {
// TODO: avatar_url
changed = this._members.applyMember(content.name, content.state_key) || changed;
}
// if (membership === "join" && content.name) {
// // TODO: avatar_url
// changed = this._members.applyMember(content.name, content.state_key) || changed;
// }
return changed;
}
@ -147,40 +155,3 @@ export class RoomSummary {
// this._recaculateNameIfNoneSet();
}
}
class SummaryMembers {
constructor(initialMembers = []) {
this._alphabeticalNames = initialMembers.map(m => m.name);
}
applyMember(name, userId) {
let insertionIndex = 0;
for (var i = this._alphabeticalNames.length - 1; i >= 0; i--) {
const cmp = this._alphabeticalNames[i].localeCompare(name);
// name is already in the list, disambiguate
if (cmp === 0) {
name = disambiguateMember(name, userId);
}
// name should come after already present name, stop
if (cmp >= 0) {
insertionIndex = i + 1;
break;
}
}
// don't append names if list is full already
if (insertionIndex < SUMMARY_NAME_COUNT) {
this._alphabeticalNames.splice(insertionIndex, 0, name);
}
if (this._alphabeticalNames > SUMMARY_NAME_COUNT) {
this._alphabeticalNames = this._alphabeticalNames.slice(0, SUMMARY_NAME_COUNT);
}
}
get names() {
return this._alphabeticalNames;
}
asArray() {
return this._alphabeticalNames.map(n => {name: n});
}
}

13
src/session.js
View File

@ -1,12 +1,15 @@
import Room from "./room/room.js";
export default class Session {
constructor(storage) {
this._storage = storage;
this._session = null;
this._rooms = null;
this._rooms = {};
}
// should be called before load
// loginData has device_id, user_id, home_server, access_token
async setLoginData(loginData) {
console.log("session.setLoginData");
const txn = this._storage.readWriteTxn([this._storage.storeNames.session]);
const session = {loginData};
txn.session.set(session);
@ -17,6 +20,8 @@ export default class Session {
const txn = this._storage.readTxn([
this._storage.storeNames.session,
this._storage.storeNames.roomSummary,
this._storage.storeNames.roomState,
this._storage.storeNames.roomTimeline,
]);
// restore session object
this._session = await txn.session.get();
@ -25,9 +30,9 @@ export default class Session {
}
// load rooms
const rooms = await txn.roomSummary.getAll();
await Promise.all(rooms.map(roomSummary => {
const room = this.createRoom(room.roomId);
return room.load(roomSummary);
await Promise.all(rooms.map(summary => {
const room = this.createRoom(summary.roomId);
return room.load(summary, txn);
}));
}

25
src/storage/idb/create.js
View File

@ -12,12 +12,21 @@ function createStores(db) {
db.createObjectStore("roomSummary", {keyPath: "roomId"});
// needs roomId separate because it might hold a gap and no event
const timeline = db.createObjectStore("roomTimeline", {keyPath: ["roomId", "sortKey"]});
timeline.createIndex("byEventId", ["roomId", "event.event_id"], {unique: true});
// how to get the first/last x events for a room?
// we don't want to specify the sort key, but would need an index for the room_id?
// take sort_key as primary key then and have index on event_id?
// still, you also can't have a PK of [room_id, sort_key] and get the last or first events with just the room_id? the only thing that changes it that the PK will provide an inherent sorting that you inherit in an index that only has room_id as keyPath??? There must be a better way, need to write a prototype test for this.
// SOLUTION: with numeric keys, you can just us a min/max value to get first/last
// db.createObjectStore("members", ["room_id", "state_key"]);
const state = db.createObjectStore("roomState", {keyPath: ["event.room_id", "event.type", "event.state_key"]});
timeline.createIndex("byEventId", [
"roomId",
"event.event_id"
], {unique: true});
db.createObjectStore("roomState", {keyPath: [
"roomId",
"event.type",
"event.state_key"
]});
// const roomMembers = db.createObjectStore("roomMembers", {keyPath: [
// "event.room_id",
// "event.content.membership",
// "event.state_key"
// ]});
// roomMembers.createIndex("byName", ["room_id", "content.name"]);
}

10
src/storage/idb/query-target.js
View File

@ -29,13 +29,14 @@ export default class QueryTarget {
return this._selectWhile(range, predicate, "prev");
}
selectAll(range, direction) {
async selectAll(range, direction) {
const cursor = this._target.openCursor(range, direction);
const results = [];
return iterateCursor(cursor, (value) => {
await iterateCursor(cursor, (value) => {
results.push(value);
return true;
});
return results;
}
selectFirst(range) {
@ -69,13 +70,14 @@ export default class QueryTarget {
}, direction);
}
_selectWhile(range, predicate, direction) {
async _selectWhile(range, predicate, direction) {
const cursor = this._target.openCursor(range, direction);
const results = [];
return iterateCursor(cursor, (value) => {
await iterateCursor(cursor, (value) => {
results.push(value);
return predicate(results);
});
return results;
}
async _find(range, predicate, direction) {

6
src/storage/idb/storage.js
View File

@ -13,9 +13,9 @@ export default class Storage {
}
_validateStoreNames(storeNames) {
const unknownStoreName = storeNames.find(name => !STORE_NAMES.includes(name));
if (unknownStoreName) {
throw new Error(`Tried to open a transaction for unknown store ${unknownStoreName}`);
const idx = storeNames.findIndex(name => !STORE_NAMES.includes(name));
if (idx !== -1) {
throw new Error(`Tried to open a transaction for unknown store ${storeNames[idx]}`);
}
}

12
src/storage/idb/store.js
View File

@ -2,23 +2,23 @@ import QueryTarget from "./query-target.js";
import { reqAsPromise } from "./utils.js";
export default class Store extends QueryTarget {
constructor(store) {
super(store);
constructor(idbStore) {
super(idbStore);
}
get _store() {
get _idbStore() {
return this._target;
}
index(indexName) {
return new QueryTarget(this._store.index(indexName));
return new QueryTarget(this._idbStore.index(indexName));
}
put(value) {
return reqAsPromise(this._store.put(value));
return reqAsPromise(this._idbStore.put(value));
}
add(value) {
return reqAsPromise(this._store.add(value));
return reqAsPromise(this._idbStore.add(value));
}
}

17
src/storage/idb/stores/RoomStateStore.js Normal file
View File

@ -0,0 +1,17 @@
export default class RoomStateStore {
constructor(idbStore) {
this._roomStateStore = idbStore;
}
async getEvents(type) {
}
async getEventsForKey(type, stateKey) {
}
async setStateEvent(roomId, event) {
return this._roomStateStore.put({roomId, event});
}
}

6
src/storage/idb/stores/summary.js → src/storage/idb/stores/RoomSummaryStore.js
View File

@ -8,6 +8,8 @@ store contains:
isEncrypted
isDirectMessage
membership
inviteCount
joinCount
*/
export default class RoomSummaryStore {
constructor(summaryStore) {
@ -17,4 +19,8 @@ export default class RoomSummaryStore {
getAll() {
return this._summaryStore.selectAll();
}
set(summary) {
return this._summaryStore.put(summary);
}
}

17
src/storage/idb/stores/timeline.js → src/storage/idb/stores/RoomTimelineStore.js
View File

@ -1,25 +1,25 @@
import SortKey from "../../sortkey.js";
class TimelineStore {
export default class RoomTimelineStore {
constructor(timelineStore) {
this._timelineStore = timelineStore;
}
async lastEvents(roomId, amount) {
return this.eventsBefore(roomId, GapSortKey.maxKey());
return this.eventsBefore(roomId, SortKey.maxKey, amount);
}
async firstEvents(roomId, amount) {
return this.eventsAfter(roomId, GapSortKey.minKey());
return this.eventsAfter(roomId, SortKey.minKey, amount);
}
eventsAfter(roomId, sortKey, amount) {
const range = IDBKeyRange.lowerBound([roomId, sortKey], true);
const range = IDBKeyRange.lowerBound([roomId, sortKey.buffer], true);
return this._timelineStore.selectLimit(range, amount);
}
async eventsBefore(roomId, sortKey, amount) {
const range = IDBKeyRange.upperBound([roomId, sortKey], true);
const range = IDBKeyRange.upperBound([roomId, sortKey.buffer], true);
const events = await this._timelineStore.selectLimitReverse(range, amount);
events.reverse(); // because we fetched them backwards
return events;
@ -36,7 +36,7 @@ class TimelineStore {
appendGap(roomId, sortKey, gap) {
this._timelineStore.add({
roomId: roomId,
sortKey: sortKey,
sortKey: sortKey.buffer,
content: {
event: null,
gap: gap,
@ -45,9 +45,10 @@ class TimelineStore {
}
appendEvent(roomId, sortKey, event) {
console.info(`appending event for room ${roomId} with key ${sortKey}`);
this._timelineStore.add({
roomId: roomId,
sortKey: sortKey,
sortKey: sortKey.buffer,
content: {
event: event,
gap: null,
@ -56,6 +57,6 @@ class TimelineStore {
}
async removeEvent(roomId, sortKey) {
this._timelineStore.delete([roomId, sortKey]);
this._timelineStore.delete([roomId, sortKey.buffer]);
}
}

0
src/storage/idb/stores/session.js → src/storage/idb/stores/SessionStore.js
View File

27
src/storage/idb/stores/room.js
View File

@ -1,27 +0,0 @@
class RoomStore {
constructor(summary, db, syncTxn) {
this._summary = summary;
}
getSummary() {
return Promise.resolve(this._summary);
}
async setSummary(summary) {
this._summary = summary;
//...
}
get timelineStore() {
}
get memberStore() {
}
get stateStore() {
}
}

17
src/storage/idb/stores/state.js
View File

@ -1,17 +0,0 @@
class StateStore {
constructor(db) {
}
async getEvents(type) {
}
async getEventsForKey(type, stateKey) {
}
async setState(events) {
}
}

22
src/storage/idb/transaction.js
View File

@ -1,7 +1,9 @@
import {txnAsPromise} from "./utils.js";
import Store from "./store.js";
// import TimelineStore from "./stores/timeline.js";
import SessionStore from "./stores/session.js";
import SessionStore from "./stores/SessionStore.js";
import RoomSummaryStore from "./stores/RoomSummaryStore.js";
import RoomTimelineStore from "./stores/RoomTimelineStore.js";
import RoomStateStore from "./stores/RoomStateStore.js";
export default class Transaction {
constructor(txn, allowedStoreNames) {
@ -31,14 +33,22 @@ export default class Transaction {
return this._stores[name];
}
// get roomTimeline() {
// return this._store("roomTimeline", idbStore => new TimelineStore(idbStore));
// }
get session() {
return this._store("session", idbStore => new SessionStore(idbStore));
}
get roomSummary() {
return this._store("roomSummary", idbStore => new RoomSummaryStore(idbStore));
}
get roomTimeline() {
return this._store("roomTimeline", idbStore => new RoomTimelineStore(idbStore));
}
get roomState() {
return this._store("roomState", idbStore => new RoomStateStore(idbStore));
}
complete() {
return txnAsPromise(this._txn);
}

85
src/storage/sortkey.js
View File

@ -1,6 +1,13 @@
class GapSortKey {
constructor() {
this._keys = new Int32Array(2);
const MIN_INT32 = -2147483648;
const MAX_INT32 = 2147483647;
export default class SortKey {
constructor(buffer) {
if (buffer) {
this._keys = new Int32Array(buffer, 2);
} else {
this._keys = new Int32Array(2);
}
}
get gapKey() {
@ -19,49 +26,99 @@ class GapSortKey {
this._keys[1] = value;
}
buffer() {
get buffer() {
return this._keys.buffer;
}
nextKeyWithGap() {
const k = new Key();
const k = new SortKey();
k.gapKey = this.gapKey + 1;
k.eventKey = 0;
return k;
}
nextKey() {
const k = new Key();
const k = new SortKey();
k.gapKey = this.gapKey;
k.eventKey = this.eventKey + 1;
return k;
}
previousKey() {
const k = new Key();
const k = new SortKey();
k.gapKey = this.gapKey;
k.eventKey = this.eventKey - 1;
return k;
}
clone() {
const k = new Key();
const k = new SortKey();
k.gapKey = this.gapKey;
k.eventKey = this.eventKey;
return k;
}
static get maxKey() {
const maxKey = new GapSortKey();
maxKey.gapKey = Number.MAX_SAFE_INTEGER;
maxKey.eventKey = Number.MAX_SAFE_INTEGER;
const maxKey = new SortKey();
maxKey.gapKey = MAX_INT32;
maxKey.eventKey = MAX_INT32;
return maxKey;
}
static get minKey() {
const minKey = new GapSortKey();
minKey.gapKey = 0;
minKey.eventKey = 0;
const minKey = new SortKey();
minKey.gapKey = MIN_INT32;
minKey.eventKey = MIN_INT32;
return minKey;
}
toString() {
return `[${this.gapKey}/${this.eventKey}]`;
}
}
//#ifdef TESTS
export function tests() {
return {
test_default_key(assert) {
const k = new SortKey();
assert.equal(k.gapKey, 0);
assert.equal(k.eventKey, 0);
},
test_inc(assert) {
const a = new SortKey();
const b = a.nextKey();
assert.equal(a.gapKey, b.gapKey);
assert.equal(a.eventKey + 1, b.eventKey);
const c = b.previousKey();
assert.equal(b.gapKey, c.gapKey);
assert.equal(c.eventKey + 1, b.eventKey);
assert.equal(a.eventKey, c.eventKey);
},
test_min_key(assert) {
const minKey = SortKey.minKey;
const k = new SortKey();
assert(minKey.gapKey < k.gapKey);
assert(minKey.eventKey < k.eventKey);
},
test_max_key(assert) {
const maxKey = SortKey.maxKey;
const k = new SortKey();
assert(maxKey.gapKey > k.gapKey);
assert(maxKey.eventKey > k.eventKey);
},
test_immutable(assert) {
const a = new SortKey();
const gapKey = a.gapKey;
const eventKey = a.gapKey;
a.nextKeyWithGap();
assert.equal(a.gapKey, gapKey);
assert.equal(a.eventKey, eventKey);
}
};
}
//#endif

84
src/sync.js
View File

@ -1,21 +1,32 @@
import {RequestAbortError} from "./hs-api.js";
import {HomeServerError, StorageError} from "./error.js";
import {
RequestAbortError,
HomeServerError,
StorageError
} from "./error.js";
import EventEmitter from "./event-emitter.js";
const INCREMENTAL_TIMEOUT = 30;
const INCREMENTAL_TIMEOUT = 30000;
const SYNC_EVENT_LIMIT = 10;
function parseRooms(responseSections, roomMapper) {
return ["join", "invite", "leave"].map(membership => {
const membershipSection = responseSections[membership];
const results = Object.entries(membershipSection).map(([roomId, roomResponse]) => {
const room = roomMapper(roomId, membership);
return room.processInitialSync(roomResponse);
});
return results;
}).reduce((allResults, sectionResults) => allResults.concat(sectionResults), []);
function parseRooms(roomsSection, roomCallback) {
if (!roomsSection) {
return;
}
const allMemberships = ["join", "invite", "leave"];
for(const membership of allMemberships) {
const membershipSection = roomsSection[membership];
if (membershipSection) {
const rooms = Object.entries(membershipSection)
for (const [roomId, roomResponse] of rooms) {
roomCallback(roomId, roomResponse, membership);
}
}
}
}
export class Sync {
export default class Sync extends EventEmitter {
constructor(hsApi, session, storage) {
super();
this._hsApi = hsApi;
this._session = session;
this._storage = storage;
@ -28,9 +39,10 @@ export class Sync {
return;
}
this._isSyncing = true;
let syncToken = session.syncToken;
let syncToken = this._session.syncToken;
// do initial sync if needed
if (!syncToken) {
// need to create limit filter here
syncToken = await this._syncRequest();
}
this._syncLoop(syncToken);
@ -40,43 +52,53 @@ export class Sync {
// if syncToken is falsy, it will first do an initial sync ...
while(this._isSyncing) {
try {
syncToken = await this._syncRequest(INCREMENTAL_TIMEOUT, syncToken);
console.log(`starting sync request with since ${syncToken} ...`);
syncToken = await this._syncRequest(syncToken, INCREMENTAL_TIMEOUT);
} catch (err) {
console.warn("stopping sync because of error");
this._isSyncing = false;
this.emit("error", err);
}
}
this.emit("stopped");
}
async _syncRequest(timeout, syncToken) {
this._currentRequest = this._hsApi.sync(timeout, syncToken);
const response = await this._currentRequest.response;
async _syncRequest(syncToken, timeout) {
this._currentRequest = this._hsApi.sync(syncToken, undefined, timeout);
const response = await this._currentRequest.response();
syncToken = response.next_batch;
const storeNames = this._storage.storeNames;
const syncTxn = this._storage.startReadWriteTxn([
storeNames.timeline,
const syncTxn = this._storage.readWriteTxn([
storeNames.session,
storeNames.state
storeNames.roomSummary,
storeNames.roomTimeline,
storeNames.roomState,
]);
try {
session.applySync(syncToken, response.account_data, syncTxn);
this._session.applySync(syncToken, response.account_data, syncTxn);
// to_device
// presence
parseRooms(response.rooms, async (roomId, roomResponse, membership) => {
let room = session.getRoom(roomId);
if (!room) {
room = session.createRoom(roomId);
}
room.applySync(roomResponse, membership, syncTxn);
});
if (response.rooms) {
parseRooms(response.rooms, (roomId, roomResponse, membership) => {
let room = this._session.getRoom(roomId);
if (!room) {
room = this._session.createRoom(roomId);
}
console.log(` * applying sync response to room ${roomId} ...`);
room.applySync(roomResponse, membership, syncTxn);
});
}
} catch(err) {
console.warn("aborting syncTxn because of error");
// avoid corrupting state by only
// storing the sync up till the point
// the exception occurred
txn.abort();
syncTxn.abort();
throw err;
}
try {
await txn.complete();
await syncTxn.complete();
console.info("syncTxn committed!!");
} catch (err) {
throw new StorageError("unable to commit sync tranaction", err);
}