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Move alllll the sync code to sync.js - still more to do (in FIXME XXX)

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This commit is contained in:
Kegan Dougal
2015-12-08 17:41:09 +00:00
parent ac3aa5538f
commit 2b659656cc
2 changed files with 426 additions and 478 deletions
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489
lib/client.js
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@@ -13,12 +13,11 @@ var httpApi = require("./http-api");
var MatrixEvent = require("./models/event").MatrixEvent;
var EventStatus = require("./models/event").EventStatus;
var StubStore = require("./store/stub");
var Room = require("./models/room");
var User = require("./models/user");
var webRtcCall = require("./webrtc/call");
var utils = require("./utils");
var contentRepo = require("./content-repo");
var Filter = require("./filter");
var SyncApi = require("./sync");
var SCROLLBACK_DELAY_MS = 3000;
var CRYPTO_ENABLED = false;
@@ -622,9 +621,9 @@ MatrixClient.prototype.joinRoom = function(roomIdOrAlias, opts, callback) {
this._http.authedRequest(undefined, "POST", path, undefined, {}).then(
function(res) {
var roomId = res.room_id;
var room = createNewRoom(self, roomId);
var room = createNewRoom(self, roomId); // XXX FIXME TODO
if (opts.syncRoom) {
return _syncRoom(self, room);
return _syncRoom(self, room); // XXX FIXME TODO
}
return q(room);
}, function(err) {
@@ -2174,136 +2173,12 @@ MatrixClient.prototype.isLoggedIn = function() {
/**
* This is an internal method.
* @param {MatrixClient} client
* @param {integer} historyLen
* @param {integer} includeArchived
* @param {integer} attempt
*/
function doInitialSync(client, historyLen, includeArchived, attempt) {
attempt = attempt || 1;
var qps = { limit: historyLen };
if (includeArchived) {
qps.archived = true;
}
if (client._guestRooms && client._isGuest) {
console.log(client._guestRooms);
qps.room_id = JSON.stringify(client._guestRooms);
}
client._http.authedRequest(
undefined, "GET", "/initialSync", qps
).done(function(data) {
var i, j;
// intercept the results and put them into our store
if (!(client.store instanceof StubStore)) {
utils.forEach(
utils.map(data.presence, _PojoToMatrixEventMapper(client)),
function(e) {
var user = createNewUser(client, e.getContent().user_id);
user.setPresenceEvent(e);
client.store.storeUser(user);
});
// group receipts by room ID.
var receiptsByRoom = {};
data.receipts = data.receipts || [];
utils.forEach(data.receipts.map(_PojoToMatrixEventMapper(client)),
function(receiptEvent) {
if (!receiptsByRoom[receiptEvent.getRoomId()]) {
receiptsByRoom[receiptEvent.getRoomId()] = [];
}
receiptsByRoom[receiptEvent.getRoomId()].push(receiptEvent);
}
);
for (i = 0; i < data.rooms.length; i++) {
var room = createNewRoom(client, data.rooms[i].room_id);
if (!data.rooms[i].state) {
data.rooms[i].state = [];
}
if (data.rooms[i].membership === "invite") {
var inviteEvent = data.rooms[i].invite;
if (!inviteEvent) {
// fallback for servers which don't serve the invite key yet
inviteEvent = {
event_id: "$fake_" + room.roomId,
content: {
membership: "invite"
},
state_key: client.credentials.userId,
user_id: data.rooms[i].inviter,
room_id: room.roomId,
type: "m.room.member"
};
}
data.rooms[i].state.push(inviteEvent);
}
_processRoomEvents(
client, room, data.rooms[i].state, data.rooms[i].messages
);
var receipts = receiptsByRoom[room.roomId] || [];
for (j = 0; j < receipts.length; j++) {
room.addReceipt(receipts[j]);
}
var privateUserData = data.rooms[i].account_data || [];
var privateUserDataEvents =
utils.map(privateUserData, _PojoToMatrixEventMapper(client));
for (j = 0; j < privateUserDataEvents.length; j++) {
var event = privateUserDataEvents[j];
if (event.getType() === "m.tag") {
room.addTags(event);
}
// XXX: unhandled private user data event - we should probably
// put it somewhere useful once the API has settled
}
// cache the name/summary/etc prior to storage since we don't
// know how the store will serialise the Room.
room.recalculate(client.credentials.userId);
client.store.storeRoom(room);
client.emit("Room", room);
}
}
if (data) {
client.store.setSyncToken(data.end);
var events = [];
for (i = 0; i < data.presence.length; i++) {
events.push(new MatrixEvent(data.presence[i]));
}
for (i = 0; i < data.rooms.length; i++) {
if (data.rooms[i].state) {
for (j = 0; j < data.rooms[i].state.length; j++) {
events.push(new MatrixEvent(data.rooms[i].state[j]));
}
}
if (data.rooms[i].messages) {
for (j = 0; j < data.rooms[i].messages.chunk.length; j++) {
events.push(
new MatrixEvent(data.rooms[i].messages.chunk[j])
);
}
}
}
utils.forEach(events, function(e) {
client.emit("event", e);
});
}
client.clientRunning = true;
updateSyncState(client, "PREPARED");
// assume success until we fail which may be 30+ secs
updateSyncState(client, "SYNCING");
_pollForEvents(client);
}, function(err) {
console.error("/initialSync error (%s attempts): %s", attempt, err);
attempt += 1;
startSyncingRetryTimer(client, attempt, function() {
doInitialSync(client, historyLen, includeArchived, attempt);
});
updateSyncState(client, "ERROR", { error: err });
function doSync(client) {
var syncApi = new SyncApi(client);
syncApi.sync({
historyLen: client._config.initialSyncLimit,
includeArchived: client._config.includeArchivedRooms
});
}
@@ -2352,250 +2227,12 @@ MatrixClient.prototype.startClient = function(opts) {
this.uploadKeys(5);
}
if (this.store.getSyncToken()) {
// resume from where we left off.
_pollForEvents(this);
return;
}
// periodically poll for turn servers if we support voip
checkTurnServers(this);
prepareForSync(this);
doSync(this);
};
function prepareForSync(client, attempt) {
if (client.isGuest()) {
// no push rules for guests
doInitialSync(
client,
client._config.initialSyncLimit,
client._config.includeArchivedRooms
);
return;
}
attempt = attempt || 1;
// we do push rules before syncing so when we gets events down we know immediately
// whether they are bing-worthy.
client.pushRules().done(function(result) {
client.pushRules = result;
doInitialSync(
client,
client._config.initialSyncLimit,
client._config.includeArchivedRooms
);
}, function(err) {
attempt += 1;
startSyncingRetryTimer(client, attempt, function() {
prepareForSync(client, attempt);
});
updateSyncState(client, "ERROR", { error: err });
});
}
/**
* This is an internal method.
* @param {MatrixClient} client
* @param {Number} attempt The attempt number
*/
function _pollForEvents(client, attempt) {
attempt = attempt || 1;
var self = client;
if (!client.clientRunning) {
return;
}
var timeoutMs = client._config.pollTimeout;
if (attempt > 1) {
// we think the connection is dead. If it comes back up, we won't know
// about it till /events returns. If the timeout= is high, this could
// be a long time. Set it to 1 when doing retries.
timeoutMs = 1;
}
var discardResult = false;
var timeoutObj = setTimeout(function() {
discardResult = true;
console.error("/events request timed out.");
_pollForEvents(client);
}, timeoutMs + (20 * 1000)); // 20s buffer
var queryParams = {
from: client.store.getSyncToken(),
timeout: timeoutMs
};
if (client._guestRooms && client._isGuest) {
queryParams.room_id = client._guestRooms;
}
client._http.authedRequest(undefined, "GET", "/events", queryParams).done(
function(data) {
if (discardResult) {
return;
}
else {
clearTimeout(timeoutObj);
}
if (self._syncState !== "SYNCING") {
updateSyncState(self, "SYNCING");
}
try {
var events = [];
if (data) {
events = utils.map(data.chunk, _PojoToMatrixEventMapper(self));
}
if (!(self.store instanceof StubStore)) {
var roomIdsWithNewInvites = {};
// bucket events based on room.
var i = 0;
var roomIdToEvents = {};
for (i = 0; i < events.length; i++) {
var roomId = events[i].getRoomId();
// possible to have no room ID e.g. for presence events.
if (roomId) {
if (!roomIdToEvents[roomId]) {
roomIdToEvents[roomId] = [];
}
roomIdToEvents[roomId].push(events[i]);
if (events[i].getType() === "m.room.member" &&
events[i].getContent().membership === "invite") {
roomIdsWithNewInvites[roomId] = true;
}
}
else if (events[i].getType() === "m.presence") {
var usr = self.store.getUser(events[i].getContent().user_id);
if (usr) {
usr.setPresenceEvent(events[i]);
}
else {
usr = createNewUser(self, events[i].getContent().user_id);
usr.setPresenceEvent(events[i]);
self.store.storeUser(usr);
}
}
}
// add events to room
var roomIds = utils.keys(roomIdToEvents);
utils.forEach(roomIds, function(roomId) {
var room = self.store.getRoom(roomId);
var isBrandNewRoom = false;
if (!room) {
room = createNewRoom(self, roomId);
isBrandNewRoom = true;
}
var wasJoined = room.hasMembershipState(
self.credentials.userId, "join"
);
room.addEvents(roomIdToEvents[roomId], "replace");
room.recalculate(self.credentials.userId);
// store the Room for things like invite events so developers
// can update the UI
if (isBrandNewRoom) {
self.store.storeRoom(room);
self.emit("Room", room);
}
var justJoined = room.hasMembershipState(
self.credentials.userId, "join"
);
if (!wasJoined && justJoined) {
// we've just transitioned into a join state for this room,
// so sync state.
_syncRoom(self, room);
}
});
Object.keys(roomIdsWithNewInvites).forEach(function(inviteRoomId) {
_resolveInvites(self, self.store.getRoom(inviteRoomId));
});
}
if (data) {
self.store.setSyncToken(data.end);
utils.forEach(events, function(e) {
self.emit("event", e);
});
}
}
catch (e) {
console.error("Event stream error:");
console.error(e);
}
_pollForEvents(self);
}, function(err) {
console.error("/events error: %s", JSON.stringify(err));
if (discardResult) {
return;
}
else {
clearTimeout(timeoutObj);
}
attempt += 1;
startSyncingRetryTimer(self, attempt, function() {
_pollForEvents(self, attempt);
});
updateSyncState(self, "ERROR", { error: err });
});
}
function _syncRoom(client, room) {
if (client._syncingRooms[room.roomId]) {
return client._syncingRooms[room.roomId];
}
var defer = q.defer();
client._syncingRooms[room.roomId] = defer.promise;
client.roomInitialSync(room.roomId, client._config.initialSyncLimit).done(
function(res) {
room.timeline = []; // blow away any previous messages.
_processRoomEvents(client, room, res.state, res.messages);
room.recalculate(client.credentials.userId);
client.store.storeRoom(room);
client.emit("Room", room);
defer.resolve(room);
client._syncingRooms[room.roomId] = undefined;
}, function(err) {
defer.reject(err);
client._syncingRooms[room.roomId] = undefined;
});
return defer.promise;
}
function _processRoomEvents(client, room, stateEventList, messageChunk) {
// "old" and "current" state are the same initially; they
// start diverging if the user paginates.
// We must deep copy otherwise membership changes in old state
// will leak through to current state!
var oldStateEvents = utils.map(
utils.deepCopy(stateEventList), _PojoToMatrixEventMapper(client)
);
var stateEvents = utils.map(stateEventList, _PojoToMatrixEventMapper(client));
room.oldState.setStateEvents(oldStateEvents);
room.currentState.setStateEvents(stateEvents);
_resolveInvites(client, room);
// add events to the timeline *after* setting the state
// events so messages use the right display names. Initial sync
// returns messages in chronological order, so we need to reverse
// it to get most recent -> oldest. We need it in that order in
// order to diverge old/current state correctly.
room.addEventsToTimeline(
utils.map(
messageChunk ? messageChunk.chunk : [],
_PojoToMatrixEventMapper(client)
).reverse(), true
);
if (messageChunk) {
room.oldState.paginationToken = messageChunk.start;
}
}
/**
* High level helper method to stop the client from polling and allow a
* clean shutdown.
@@ -2605,66 +2242,6 @@ MatrixClient.prototype.stopClient = function() {
// TODO: f.e. Room => self.store.storeRoom(room) ?
};
function reEmit(reEmitEntity, emittableEntity, eventNames) {
utils.forEach(eventNames, function(eventName) {
// setup a listener on the entity (the Room, User, etc) for this event
emittableEntity.on(eventName, function() {
// take the args from the listener and reuse them, adding the
// event name to the arg list so it works with .emit()
// Transformation Example:
// listener on "foo" => function(a,b) { ... }
// Re-emit on "thing" => thing.emit("foo", a, b)
var newArgs = [eventName];
for (var i = 0; i < arguments.length; i++) {
newArgs.push(arguments[i]);
}
reEmitEntity.emit.apply(reEmitEntity, newArgs);
});
});
}
function _resolveInvites(client, room) {
if (!room || !client._config.resolveInvitesToProfiles) {
return;
}
// For each invited room member we want to give them a displayname/avatar url
// if they have one (the m.room.member invites don't contain this).
room.getMembersWithMembership("invite").forEach(function(member) {
if (member._requestedProfileInfo) {
return;
}
member._requestedProfileInfo = true;
// try to get a cached copy first.
var user = client.getUser(member.userId);
var promise;
if (user) {
promise = q({
avatar_url: user.avatarUrl,
displayname: user.displayName
});
}
else {
promise = client.getProfileInfo(member.userId);
}
promise.done(function(info) {
// slightly naughty by doctoring the invite event but this means all
// the code paths remain the same between invite/join display name stuff
// which is a worthy trade-off for some minor pollution.
var inviteEvent = member.events.member;
if (inviteEvent.getContent().membership !== "invite") {
// between resolving and now they have since joined, so don't clobber
return;
}
inviteEvent.getContent().avatar_url = info.avatar_url;
inviteEvent.getContent().displayname = info.displayname;
member.setMembershipEvent(inviteEvent, room.currentState); // fire listeners
}, function(err) {
// OH WELL.
});
});
}
function setupCallEventHandler(client) {
var candidatesByCall = {
// callId: [Candidate]
@@ -2820,20 +2397,6 @@ function setupCallEventHandler(client) {
});
}
function startSyncingRetryTimer(client, attempt, fn) {
client._syncingRetry = {};
client._syncingRetry.fn = fn;
client._syncingRetry.timeoutId = setTimeout(function() {
fn();
}, retryTimeMsForAttempt(attempt));
}
function updateSyncState(client, newState, data) {
var old = client._syncState;
client._syncState = newState;
client.emit("sync", client._syncState, old, data);
}
function checkTurnServers(client) {
if (!client._supportsVoip) {
return;
@@ -2861,37 +2424,6 @@ function checkTurnServers(client) {
});
}
function createNewUser(client, userId) {
var user = new User(userId);
reEmit(client, user, ["User.avatarUrl", "User.displayName", "User.presence"]);
return user;
}
function createNewRoom(client, roomId) {
var room = new Room(roomId, {
pendingEventOrdering: client._config.pendingEventOrdering
});
reEmit(client, room, ["Room.name", "Room.timeline", "Room.receipt", "Room.tags"]);
// we need to also re-emit room state and room member events, so hook it up
// to the client now. We need to add a listener for RoomState.members in
// order to hook them correctly. (TODO: find a better way?)
reEmit(client, room.currentState, [
"RoomState.events", "RoomState.members", "RoomState.newMember"
]);
room.currentState.on("RoomState.newMember", function(event, state, member) {
member.user = client.getUser(member.userId);
reEmit(
client, member,
[
"RoomMember.name", "RoomMember.typing", "RoomMember.powerLevel",
"RoomMember.membership"
]
);
});
return room;
}
function retryTimeMsForAttempt(attempt) {
// 2,4,8,16,32,64,128,128,128,... seconds
// max 2^7 secs = 2.1 mins
@@ -2970,7 +2502,8 @@ MatrixClient.prototype.generateClientSecret = function() {
module.exports.MatrixClient = MatrixClient;
/** */
module.exports.CRYPTO_ENABLED = CRYPTO_ENABLED;
/** */
module.exports.EventMapper = _PojoToMatrixEventMapper;
// MatrixClient Event JSDocs

415
lib/sync.js Normal file
View File

@@ -0,0 +1,415 @@
"use strict";
/*
* TODO:
* This class mainly serves to take all the syncing logic out of client.js and
* into a separate file. It's all very fluid, and this class gut wrenches a lot
* of MatrixClient props (e.g. _http). Given we want to support WebSockets as
* an alternative syncing API, we may want to have a proper syncing interface
* for HTTP and WS at some point.
*/
var StubStore = require("./store/stub");
var EventMapper = require("./client").EventMapper;
var User = require("./models/user");
var Room = require("./models/room");
var utils = require("./utils");
var MatrixEvent = require("./models/event").MatrixEvent;
function startSyncingRetryTimer(client, attempt, fn) {
client._syncingRetry = {};
client._syncingRetry.fn = fn;
client._syncingRetry.timeoutId = setTimeout(function() {
fn();
}, retryTimeMsForAttempt(attempt));
}
function updateSyncState(client, newState, data) {
var old = client._syncState;
client._syncState = newState;
client.emit("sync", client._syncState, old, data);
}
function createNewUser(client, userId) {
var user = new User(userId);
reEmit(client, user, ["User.avatarUrl", "User.displayName", "User.presence"]);
return user;
}
function createNewRoom(client, roomId) {
var room = new Room(roomId, {
pendingEventOrdering: client._config.pendingEventOrdering
});
reEmit(client, room, ["Room.name", "Room.timeline", "Room.receipt", "Room.tags"]);
// we need to also re-emit room state and room member events, so hook it up
// to the client now. We need to add a listener for RoomState.members in
// order to hook them correctly. (TODO: find a better way?)
reEmit(client, room.currentState, [
"RoomState.events", "RoomState.members", "RoomState.newMember"
]);
room.currentState.on("RoomState.newMember", function(event, state, member) {
member.user = client.getUser(member.userId);
reEmit(
client, member,
[
"RoomMember.name", "RoomMember.typing", "RoomMember.powerLevel",
"RoomMember.membership"
]
);
});
return room;
}
function reEmit(reEmitEntity, emittableEntity, eventNames) {
utils.forEach(eventNames, function(eventName) {
// setup a listener on the entity (the Room, User, etc) for this event
emittableEntity.on(eventName, function() {
// take the args from the listener and reuse them, adding the
// event name to the arg list so it works with .emit()
// Transformation Example:
// listener on "foo" => function(a,b) { ... }
// Re-emit on "thing" => thing.emit("foo", a, b)
var newArgs = [eventName];
for (var i = 0; i < arguments.length; i++) {
newArgs.push(arguments[i]);
}
reEmitEntity.emit.apply(reEmitEntity, newArgs);
});
});
}
/**
* <b>Internal class - unstable.</b>
* Construct an entity which is able to sync with a homeserver.
* @param {MatrixClient} client The matrix client instance to use.
*/
function SyncApi(client) {
this.client = client;
this.opts = {};
}
/**
* @param {Object} opts
* @param {Number} opts.historyLen
* @param {Boolean} opts.includeArchived
*/
SyncApi.prototype.sync = function(opts) {
console.log("SyncApi.sync -> %s", opts);
this.opts = opts || {};
return this._sync();
}
SyncApi.prototype._prepareForSync = function(attempt) {
var client = this.client;
var self = this;
if (client.isGuest()) {
// no push rules for guests
this._sync();
return;
}
attempt = attempt || 1;
// we do push rules before syncing so when we gets events down we know immediately
// whether they are bing-worthy.
client.pushRules().done(function(result) {
client.pushRules = result;
self._sync();
}, function(err) {
attempt += 1;
startSyncingRetryTimer(client, attempt, function() {
prepareForSync(client, attempt);
});
updateSyncState(client, "ERROR", { error: err });
});
}
SyncApi.prototype._sync = function(attempt) {
var opts = this.opts;
var client = this.client;
var self = this;
var historyLen = opts.historyLen;
var includeArchived = opts.includeArchived;
attempt = attempt || 1;
var qps = { limit: historyLen };
if (includeArchived) {
qps.archived = true;
}
if (client._guestRooms && client._isGuest) {
qps.room_id = JSON.stringify(client._guestRooms);
}
client._http.authedRequest(
undefined, "GET", "/initialSync", qps
).done(function(data) {
var i, j;
// intercept the results and put them into our store
if (!(client.store instanceof StubStore)) {
utils.forEach(
utils.map(data.presence, EventMapper(client)),
function(e) {
var user = createNewUser(client, e.getContent().user_id);
user.setPresenceEvent(e);
client.store.storeUser(user);
});
// group receipts by room ID.
var receiptsByRoom = {};
data.receipts = data.receipts || [];
utils.forEach(data.receipts.map(EventMapper(client)),
function(receiptEvent) {
if (!receiptsByRoom[receiptEvent.getRoomId()]) {
receiptsByRoom[receiptEvent.getRoomId()] = [];
}
receiptsByRoom[receiptEvent.getRoomId()].push(receiptEvent);
}
);
for (i = 0; i < data.rooms.length; i++) {
var room = createNewRoom(client, data.rooms[i].room_id);
if (!data.rooms[i].state) {
data.rooms[i].state = [];
}
if (data.rooms[i].membership === "invite") {
var inviteEvent = data.rooms[i].invite;
if (!inviteEvent) {
// fallback for servers which don't serve the invite key yet
inviteEvent = {
event_id: "$fake_" + room.roomId,
content: {
membership: "invite"
},
state_key: client.credentials.userId,
user_id: data.rooms[i].inviter,
room_id: room.roomId,
type: "m.room.member"
};
}
data.rooms[i].state.push(inviteEvent);
}
_processRoomEvents( // XXX
client, room, data.rooms[i].state, data.rooms[i].messages
);
var receipts = receiptsByRoom[room.roomId] || [];
for (j = 0; j < receipts.length; j++) {
room.addReceipt(receipts[j]);
}
var privateUserData = data.rooms[i].account_data || [];
var privateUserDataEvents =
utils.map(privateUserData, EventMapper(client));
for (j = 0; j < privateUserDataEvents.length; j++) {
var event = privateUserDataEvents[j];
if (event.getType() === "m.tag") {
room.addTags(event);
}
// XXX: unhandled private user data event - we should probably
// put it somewhere useful once the API has settled
}
// cache the name/summary/etc prior to storage since we don't
// know how the store will serialise the Room.
room.recalculate(client.credentials.userId);
client.store.storeRoom(room);
client.emit("Room", room);
}
}
if (data) {
client.store.setSyncToken(data.end);
var events = [];
for (i = 0; i < data.presence.length; i++) {
events.push(new MatrixEvent(data.presence[i]));
}
for (i = 0; i < data.rooms.length; i++) {
if (data.rooms[i].state) {
for (j = 0; j < data.rooms[i].state.length; j++) {
events.push(new MatrixEvent(data.rooms[i].state[j]));
}
}
if (data.rooms[i].messages) {
for (j = 0; j < data.rooms[i].messages.chunk.length; j++) {
events.push(
new MatrixEvent(data.rooms[i].messages.chunk[j])
);
}
}
}
utils.forEach(events, function(e) {
client.emit("event", e);
});
}
client.clientRunning = true;
updateSyncState(client, "PREPARED");
// assume success until we fail which may be 30+ secs
updateSyncState(client, "SYNCING");
self._pollForEvents();
}, function(err) {
console.error("/initialSync error (%s attempts): %s", attempt, err);
attempt += 1;
startSyncingRetryTimer(client, attempt, function() {
self._sync(opts, attempt);
});
updateSyncState(client, "ERROR", { error: err });
});
};
/**
* This is an internal method.
* @param {MatrixClient} client
* @param {Number} attempt The attempt number
*/
SyncApi.prototype._pollForEvents = function(attempt) {
var client = this.client;
var self = this;
attempt = attempt || 1;
if (!client.clientRunning) {
return;
}
var timeoutMs = client._config.pollTimeout;
if (attempt > 1) {
// we think the connection is dead. If it comes back up, we won't know
// about it till /events returns. If the timeout= is high, this could
// be a long time. Set it to 1 when doing retries.
timeoutMs = 1;
}
var discardResult = false;
var timeoutObj = setTimeout(function() {
discardResult = true;
console.error("/events request timed out.");
self._pollForEvents();
}, timeoutMs + (20 * 1000)); // 20s buffer
var queryParams = {
from: client.store.getSyncToken(),
timeout: timeoutMs
};
if (client._guestRooms && client._isGuest) {
queryParams.room_id = client._guestRooms;
}
client._http.authedRequest(undefined, "GET", "/events", queryParams).done(
function(data) {
if (discardResult) {
return;
}
else {
clearTimeout(timeoutObj);
}
if (client._syncState !== "SYNCING") {
updateSyncState(self, "SYNCING");
}
try {
var events = [];
if (data) {
events = utils.map(data.chunk, EventMapper(self));
}
if (!(client.store instanceof StubStore)) {
var roomIdsWithNewInvites = {};
// bucket events based on room.
var i = 0;
var roomIdToEvents = {};
for (i = 0; i < events.length; i++) {
var roomId = events[i].getRoomId();
// possible to have no room ID e.g. for presence events.
if (roomId) {
if (!roomIdToEvents[roomId]) {
roomIdToEvents[roomId] = [];
}
roomIdToEvents[roomId].push(events[i]);
if (events[i].getType() === "m.room.member" &&
events[i].getContent().membership === "invite") {
roomIdsWithNewInvites[roomId] = true;
}
}
else if (events[i].getType() === "m.presence") {
var usr = client.store.getUser(events[i].getContent().user_id);
if (usr) {
usr.setPresenceEvent(events[i]);
}
else {
usr = createNewUser(self, events[i].getContent().user_id);
usr.setPresenceEvent(events[i]);
client.store.storeUser(usr);
}
}
}
// add events to room
var roomIds = utils.keys(roomIdToEvents);
utils.forEach(roomIds, function(roomId) {
var room = client.store.getRoom(roomId);
var isBrandNewRoom = false;
if (!room) {
room = createNewRoom(self, roomId);
isBrandNewRoom = true;
}
var wasJoined = room.hasMembershipState(
client.credentials.userId, "join"
);
room.addEvents(roomIdToEvents[roomId], "replace");
room.recalculate(client.credentials.userId);
// store the Room for things like invite events so developers
// can update the UI
if (isBrandNewRoom) {
client.store.storeRoom(room);
client.emit("Room", room);
}
var justJoined = room.hasMembershipState(
client.credentials.userId, "join"
);
if (!wasJoined && justJoined) {
// we've just transitioned into a join state for this room,
// so sync state.
_syncRoom(self, room); // XXX
}
});
Object.keys(roomIdsWithNewInvites).forEach(function(inviteRoomId) {
_resolveInvites(self, client.store.getRoom(inviteRoomId)); // XXX
});
}
if (data) {
client.store.setSyncToken(data.end);
utils.forEach(events, function(e) {
client.emit("event", e);
});
}
}
catch (e) {
console.error("Event stream error:");
console.error(e);
}
client._pollForEvents();
}, function(err) {
console.error("/events error: %s", JSON.stringify(err));
if (discardResult) {
return;
}
else {
clearTimeout(timeoutObj);
}
attempt += 1;
startSyncingRetryTimer(self, attempt, function() {
client._pollForEvents(attempt);
});
updateSyncState(self, "ERROR", { error: err });
});
}
module.exports = SyncApi;