Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Distinguish room state and timeline events in embedded clients #4574

Merged
merged 4 commits into from
Jan 15, 2025
Merged

Distinguish room state and timeline events in embedded clients #4574

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
4ff8c25
Distinguish room state and timeline events in embedded clients
robintown Dec 6, 2024
d7cf129
Merge branch 'develop' into embedded-state
robintown Jan 15, 2025
db05c2a
Add missing awaits
robintown Jan 15, 2025
6334091
Upgrade matrix-widget-api
robintown Jan 15, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
56 changes: 40 additions & 16 deletions spec/unit/embedded.spec.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,6 @@ import {
WidgetApiToWidgetAction,
MatrixCapabilities,
ITurnServer,
IRoomEvent,
IOpenIDCredentials,
ISendEventFromWidgetResponseData,
WidgetApiResponseError,
Expand Down Expand Up @@ -635,12 +634,20 @@ describe("RoomWidgetClient", () => {
});

it("receives", async () => {
await makeClient({ receiveState: [{ eventType: "org.example.foo", stateKey: "bar" }] });
const init = makeClient({ receiveState: [{ eventType: "org.example.foo", stateKey: "bar" }] });
expect(widgetApi.requestCapabilityForRoomTimeline).toHaveBeenCalledWith("!1:example.org");
expect(widgetApi.requestCapabilityToReceiveState).toHaveBeenCalledWith("org.example.foo", "bar");
// Client needs to be told that the room state is loaded
widgetApi.emit(
`action:${WidgetApiToWidgetAction.UpdateState}`,
new CustomEvent(`action:${WidgetApiToWidgetAction.UpdateState}`, { detail: { data: { state: [] } } }),
);
await init;

const emittedEvent = new Promise<MatrixEvent>((resolve) => client.once(ClientEvent.Event, resolve));
const emittedSync = new Promise<SyncState>((resolve) => client.once(ClientEvent.Sync, resolve));
// Let's assume that a state event comes in but it doesn't actually
// update the state of the room just yet (maybe it's unauthorized)
widgetApi.emit(
`action:${WidgetApiToWidgetAction.SendEvent}`,
new CustomEvent(`action:${WidgetApiToWidgetAction.SendEvent}`, { detail: { data: event } }),
Expand All @@ -649,26 +656,43 @@ describe("RoomWidgetClient", () => {
// The client should've emitted about the received event
expect((await emittedEvent).getEffectiveEvent()).toEqual(event);
expect(await emittedSync).toEqual(SyncState.Syncing);
// It should've also inserted the event into the room object
// However it should not have changed the room state
const room = client.getRoom("!1:example.org");
expect(room).not.toBeNull();
expect(room!.currentState.getStateEvents("org.example.foo", "bar")).toBe(null);

// Now assume that the state event becomes favored by state
// resolution for whatever reason and enters into the current state
// of the room
widgetApi.emit(
`action:${WidgetApiToWidgetAction.UpdateState}`,
new CustomEvent(`action:${WidgetApiToWidgetAction.UpdateState}`, {
detail: { data: { state: [event] } },
}),
);
// It should now have changed the room state
expect(room!.currentState.getStateEvents("org.example.foo", "bar")?.getEffectiveEvent()).toEqual(event);
});

it("backfills", async () => {
widgetApi.readStateEvents.mockImplementation(async (eventType, limit, stateKey) =>
eventType === "org.example.foo" && (limit ?? Infinity) > 0 && stateKey === "bar"
? [event as IRoomEvent]
: [],
it("ignores state updates for other rooms", async () => {
const init = makeClient({ receiveState: [{ eventType: "org.example.foo", stateKey: "bar" }] });
// Client needs to be told that the room state is loaded
widgetApi.emit(
`action:${WidgetApiToWidgetAction.UpdateState}`,
new CustomEvent(`action:${WidgetApiToWidgetAction.UpdateState}`, { detail: { data: { state: [] } } }),
);
await init;

await makeClient({ receiveState: [{ eventType: "org.example.foo", stateKey: "bar" }] });
expect(widgetApi.requestCapabilityForRoomTimeline).toHaveBeenCalledWith("!1:example.org");
expect(widgetApi.requestCapabilityToReceiveState).toHaveBeenCalledWith("org.example.foo", "bar");

const room = client.getRoom("!1:example.org");
expect(room).not.toBeNull();
expect(room!.currentState.getStateEvents("org.example.foo", "bar")?.getEffectiveEvent()).toEqual(event);
// Now a room we're not interested in receives a state update
widgetApi.emit(
`action:${WidgetApiToWidgetAction.UpdateState}`,
new CustomEvent(`action:${WidgetApiToWidgetAction.UpdateState}`, {
detail: { data: { state: [{ ...event, room_id: "!other-room:example.org" }] } },
}),
);
// No change to the room state
for (const room of client.getRooms()) {
expect(room.currentState.getStateEvents("org.example.foo", "bar")).toBe(null);
}
});
});

Expand Down
89 changes: 41 additions & 48 deletions src/embedded.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import {
WidgetApiAction,
IWidgetApiResponse,
IWidgetApiResponseData,
IUpdateStateToWidgetActionRequest,
} from "matrix-widget-api";

import { MatrixEvent, IEvent, IContent, EventStatus } from "./models/event.ts";
Expand Down Expand Up @@ -136,6 +137,7 @@ export type EventHandlerMap = { [RoomWidgetClientEvent.PendingEventsChanged]: ()
export class RoomWidgetClient extends MatrixClient {
private room?: Room;
private readonly widgetApiReady: Promise<void>;
private readonly roomStateSynced: Promise<void>;
private lifecycle?: AbortController;
private syncState: SyncState | null = null;

Expand Down Expand Up @@ -189,6 +191,11 @@ export class RoomWidgetClient extends MatrixClient {
};

this.widgetApiReady = new Promise<void>((resolve) => this.widgetApi.once("ready", resolve));
this.roomStateSynced = capabilities.receiveState?.length
? new Promise<void>((resolve) =>
this.widgetApi.once(`action:${WidgetApiToWidgetAction.UpdateState}`, resolve),
)
: Promise.resolve();

// Request capabilities for the functionality this client needs to support
if (
Expand Down Expand Up @@ -241,6 +248,7 @@ export class RoomWidgetClient extends MatrixClient {

widgetApi.on(`action:${WidgetApiToWidgetAction.SendEvent}`, this.onEvent);
widgetApi.on(`action:${WidgetApiToWidgetAction.SendToDevice}`, this.onToDevice);
widgetApi.on(`action:${WidgetApiToWidgetAction.UpdateState}`, this.onStateUpdate);

// Open communication with the host
widgetApi.start();
Expand Down Expand Up @@ -276,37 +284,16 @@ export class RoomWidgetClient extends MatrixClient {

await this.widgetApiReady;

// Backfill the requested events
// We only get the most recent event for every type + state key combo,
// so it doesn't really matter what order we inject them in
await Promise.all(
this.capabilities.receiveState?.map(async ({ eventType, stateKey }) => {
const rawEvents = await this.widgetApi.readStateEvents(eventType, undefined, stateKey, [this.roomId]);
const events = rawEvents.map((rawEvent) => new MatrixEvent(rawEvent as Partial<IEvent>));

if (this.syncApi instanceof SyncApi) {
// Passing undefined for `stateAfterEventList` allows will make `injectRoomEvents` run in legacy mode
// -> state events in `timelineEventList` will update the state.
await this.syncApi.injectRoomEvents(this.room!, undefined, events);
} else {
await this.syncApi!.injectRoomEvents(this.room!, events); // Sliding Sync
}
events.forEach((event) => {
this.emit(ClientEvent.Event, event);
logger.info(`Backfilled event ${event.getId()} ${event.getType()} ${event.getStateKey()}`);
});
}) ?? [],
);
Comment on lines -279 to -299
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

we could add this code back in case the driver does not support the update_state (or state_after) version.


if (opts.clientWellKnownPollPeriod !== undefined) {
this.clientWellKnownIntervalID = setInterval(() => {
this.fetchClientWellKnown();
}, 1000 * opts.clientWellKnownPollPeriod);
this.fetchClientWellKnown();
}

await this.roomStateSynced;
this.setSyncState(SyncState.Syncing);
logger.info("Finished backfilling events");
logger.info("Finished initial sync");

this.matrixRTC.start();

Expand All @@ -317,6 +304,7 @@ export class RoomWidgetClient extends MatrixClient {
public stopClient(): void {
this.widgetApi.off(`action:${WidgetApiToWidgetAction.SendEvent}`, this.onEvent);
this.widgetApi.off(`action:${WidgetApiToWidgetAction.SendToDevice}`, this.onToDevice);
this.widgetApi.off(`action:${WidgetApiToWidgetAction.UpdateState}`, this.onStateUpdate);

super.stopClient();
this.lifecycle!.abort(); // Signal to other async tasks that the client has stopped
Expand Down Expand Up @@ -574,36 +562,15 @@ export class RoomWidgetClient extends MatrixClient {
// Only inject once we have update the txId
await this.updateTxId(event);

// The widget API does not tell us whether a state event came from `state_after` or not so we assume legacy behaviour for now.
if (this.syncApi instanceof SyncApi) {
// The code will want to be something like:
// ```
// if (!params.addToTimeline && !params.addToState) {
// // Passing undefined for `stateAfterEventList` makes `injectRoomEvents` run in "legacy mode"
// // -> state events part of the `timelineEventList` parameter will update the state.
// this.injectRoomEvents(this.room!, [], undefined, [event]);
// } else {
// this.injectRoomEvents(this.room!, undefined, params.addToState ? [event] : [], params.addToTimeline ? [event] : []);
// }
// ```

// Passing undefined for `stateAfterEventList` allows will make `injectRoomEvents` run in legacy mode
// -> state events in `timelineEventList` will update the state.
await this.syncApi.injectRoomEvents(this.room!, [], undefined, [event]);
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Use the state_after version is not supported use:
await this.syncApi.injectRoomEvents(this.room!, [], undefined, [event]); as before.

await this.syncApi.injectRoomEvents(this.room!, undefined, [], [event]);
} else {
// The code will want to be something like:
// ```
// if (!params.addToTimeline && !params.addToState) {
// this.injectRoomEvents(this.room!, [], [event]);
// } else {
// this.injectRoomEvents(this.room!, params.addToState ? [event] : [], params.addToTimeline ? [event] : []);
// }
// ```
await this.syncApi!.injectRoomEvents(this.room!, [], [event]); // Sliding Sync
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

also use this if the version is not supported.

// Sliding Sync
await this.syncApi!.injectRoomEvents(this.room!, [], [event]);
}
this.emit(ClientEvent.Event, event);
this.setSyncState(SyncState.Syncing);
logger.info(`Received event ${event.getId()} ${event.getType()} ${event.getStateKey()}`);
logger.info(`Received event ${event.getId()} ${event.getType()}`);
} else {
const { event_id: eventId, room_id: roomId } = ev.detail.data;
logger.info(`Received event ${eventId} for a different room ${roomId}; discarding`);
Expand All @@ -628,6 +595,32 @@ export class RoomWidgetClient extends MatrixClient {
await this.ack(ev);
};

private onStateUpdate = async (ev: CustomEvent<IUpdateStateToWidgetActionRequest>): Promise<void> => {
ev.preventDefault();

for (const rawEvent of ev.detail.data.state) {
// Verify the room ID matches, since it's possible for the client to
// send us state updates from other rooms if this widget is always
// on screen
if (rawEvent.room_id === this.roomId) {
const event = new MatrixEvent(rawEvent as Partial<IEvent>);

if (this.syncApi instanceof SyncApi) {
await this.syncApi.injectRoomEvents(this.room!, undefined, [event]);
} else {
// Sliding Sync
await this.syncApi!.injectRoomEvents(this.room!, [event]);
}
logger.info(`Updated state entry ${event.getType()} ${event.getStateKey()} to ${event.getId()}`);
} else {
const { event_id: eventId, room_id: roomId } = ev.detail.data;
logger.info(`Received state entry ${eventId} for a different room ${roomId}; discarding`);
}
}

await this.ack(ev);
};

private async watchTurnServers(): Promise<void> {
const servers = this.widgetApi.getTurnServers();
const onClientStopped = (): void => {
Expand Down
6 changes: 3 additions & 3 deletions yarn.lock
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4854,9 +4854,9 @@ matrix-mock-request@^2.5.0:
expect "^28.1.0"

matrix-widget-api@^1.10.0:
version "1.10.0"
resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-1.10.0.tgz#d31ea073a5871a1fb1a511ef900b0c125a37bf55"
integrity sha512-rkAJ29briYV7TJnfBVLVSKtpeBrBju15JZFSDP6wj8YdbCu1bdmlplJayQ+vYaw1x4fzI49Q+Nz3E85s46sRDw==
version "1.12.0"
resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-1.12.0.tgz#b3d22bab1670051c8eeee66bb96d08b33148bc99"
integrity sha512-6JRd9fJGGvuBRhcTg9wX+Skn/Q1wox3jdp5yYQKJ6pPw4urW9bkTR90APBKVDB1vorJKT44jml+lCzkDMRBjww==
dependencies:
"@types/events" "^3.0.0"
events "^3.2.0"
Expand Down
Loading