/
PromoteToPrimaryMeetingTask.ts
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/
PromoteToPrimaryMeetingTask.ts
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
import { MeetingSessionCredentials, MeetingSessionStatus, MeetingSessionStatusCode } from '..';
import AudioVideoControllerState from '../audiovideocontroller/AudioVideoControllerState';
import Logger from '../logger/Logger';
import SignalingClient from '../signalingclient/SignalingClient';
import SignalingClientEvent from '../signalingclient/SignalingClientEvent';
import SignalingClientEventType from '../signalingclient/SignalingClientEventType';
import SignalingClientObserver from '../signalingclientobserver/SignalingClientObserver';
import { SdkSignalFrame } from '../signalingprotocol/SignalingProtocol.js';
import TaskCanceler from '../taskcanceler/TaskCanceler';
import BaseTask from './BaseTask';
/**
* [[PromoteToPrimaryMeetingTask]] sends a `SdkSignalFrame.PrimaryMeetingJoin` and waits for
* a `SdkSignalFrame.PrimaryMeetingJoinAck` frame.
*/
export default class PromoteToPrimaryMeetingTask extends BaseTask {
protected taskName = 'PromoteToPrimaryMeetingTask';
private taskCanceler: TaskCanceler | null = null;
constructor(
private context: AudioVideoControllerState,
private credentials: MeetingSessionCredentials,
private completionCallback: (status: MeetingSessionStatus) => void
) {
super(context.logger);
}
cancel(): void {
if (this.taskCanceler) {
this.taskCanceler.cancel();
this.taskCanceler = null;
}
}
async run(): Promise<void> {
if (this.context.signalingClient.ready()) {
this.context.signalingClient.promoteToPrimaryMeeting(this.credentials);
this.context.logger.info('Sent request to join primary meeting');
await this.receivePrimaryMeetingJoinAck();
} else {
this.completionCallback(
new MeetingSessionStatus(MeetingSessionStatusCode.SignalingRequestFailed)
);
}
}
private receivePrimaryMeetingJoinAck(): Promise<void> {
return new Promise((resolve, _) => {
class Interceptor implements SignalingClientObserver, TaskCanceler {
constructor(
private signalingClient: SignalingClient,
private completionCallback: (status: MeetingSessionStatus) => void,
private logger: Logger
) {}
cancel(): void {
this.signalingClient.removeObserver(this);
// Currently only cancel would come from timeout. Should
// be rare enough (ignoring bugs) that we don't need to bother
// retrying.
this.completionCallback(
new MeetingSessionStatus(MeetingSessionStatusCode.SignalingRequestFailed)
);
resolve();
}
handleSignalingClientEvent(event: SignalingClientEvent): void {
if (event.isConnectionTerminated()) {
this.signalingClient.removeObserver(this);
this.logger.info('PromoteToPrimaryMeetingTask connection terminated');
// This would happen either in happy or unhappy disconnections. The
// timing here is rare enough (ignoring bugs) that we don't need to bother
// retrying the unhappy case.
this.completionCallback(
new MeetingSessionStatus(MeetingSessionStatusCode.SignalingRequestFailed)
);
resolve();
}
if (
event.type === SignalingClientEventType.ReceivedSignalFrame &&
event.message.type === SdkSignalFrame.Type.PRIMARY_MEETING_JOIN_ACK
) {
this.signalingClient.removeObserver(this);
this.logger.info('Got a primary meeting join ACK');
this.completionCallback(MeetingSessionStatus.fromSignalFrame(event.message));
resolve();
}
}
}
const interceptor = new Interceptor(
this.context.signalingClient,
this.completionCallback,
this.context.logger
);
this.taskCanceler = interceptor;
this.context.signalingClient.registerObserver(interceptor);
});
}
}