@sourceloop/video-conferencing-service

Overview

Various features of Video Conferencing Services:

1. Schedule Meetings and Generate a Token Book on demand meetings or schedule meetings and generate token which is required for connection to a session/room on the client side.

2. List Archives Get a specific archive or list a set of archives for the recorded meetings.

3. Configure storage target Set Storage settings to store archives to custom s3 bucket or Microsoft Azure Storage.

4. Webhook Events Webhook Events (such as session or webhook) when configured receive events from a third party. These events are used to store session attendees or store archive information. For Vonage, you need to add this microservice server url in your current vonage project so it will receive webhook events. See Vonage Documentation for more information.

You can see the database schema here.

To get started with a basic implementation of this service, see /sandbox/video-conferencing-ms-example.

Install

npm i @sourceloop/video-conferencing-service

Working and Flow

Usage

• Create a new Loopback4 Application (If you don't have one already) lb4 testapp

• Install the video conferencing service npm i @sourceloop/video-conferencing-service

• Set the environment variables.

• Run the migrations.

• Bind Vonage config to the VonageBindings.Config key -

  this.bind(VonageBindings.Config).to({
    apiKey: process.env.VONAGE_API_KEY,
    apiSecret: process.env.VONAGE_API_SECRET,
    timeToStart: 0, // time in minutes, meeting can not be started 'timeToStart' minutes before the scheduled time
  });

• For Twilio bind twilio config to the TwilioBindings.config key-

  this.bind(TwilioBindings.config).to({
    accountSid: process.env.TWILIO_ACCOUNT_SID,
    authToken: process.env.TWILIO_AUTH_TOKEN,
    apiSid: process.env.TWILIO_API_KEY,
    apiSecret: process.env.TWILIO_API_SECRET,
  });

• Add the VideoConfServiceComponent to your Loopback4 Application (in application.ts)

  // import the component for VideoConfService
  import { VideoConfServiceComponent } from '@sourceloop/video-conferencing-service';
  ...
  // add VideoConfServiceComponent inside the application class
  this.component(VideoConfServiceComponent);
  ...

• Set up a Loopback4 Datasource with dataSourceName property set to VideoConfDatasource. You can see an example datasource here.

• Using with Sequelize

  This service supports Sequelize as the underlying ORM using @loopback/sequelize extension. And in order to use it, you'll need to do following changes.

  • To use Sequelize in your application, add following to application.ts:

    this.bind(VideoChatBindings.Config).to({
      useCustomSequence: false,
      useSequelize: true,
    });

  • Use the SequelizeDataSource in your audit datasource as the parent class. Refer this for more details.

• Configurable Audit Logs

  To generate audit logs for video conferencing service, you'll have to set the env var ADD_AUDIT_LOG_MIXIN to true and configure a datasource for it like below:

  import {inject, lifeCycleObserver, LifeCycleObserver} from '@loopback/core';
  import {juggler} from '@loopback/repository';
  import {AuditDbSourceName} from '@sourceloop/audit-log';
  
  const config = {
    name: 'audit',
    connector: 'postgresql',
    url: '',
    host: '',
    port: 0,
    user: '',
    password: '',
    database: '',
  };
  
  @lifeCycleObserver('datasource')
  export class AuditDataSource
    extends juggler.DataSource
    implements LifeCycleObserver
  {
    static dataSourceName = AuditDbSourceName;
    static readonly defaultConfig = config;
  
    constructor(
      @inject('datasources.config.audit', {optional: true})
      dsConfig: object = config,
    ) {
      const auditEnvConfig = {
        host: process.env.AUDIT_DB_HOST,
        port: process.env.AUDIT_DB_PORT,
        user: process.env.AUDIT_DB_USER,
        password: process.env.AUDIT_DB_PASSWORD,
        database: process.env.AUDIT_DB_DATABASE,
        schema: process.env.AUDIT_DB_SCHEMA,
      };
      Object.assign(dsConfig, auditEnvConfig);
      super(dsConfig);
    }
  }

  Configure .env of application in index.ts before exporting application like follows

  import * as dotenv from 'dotenv';
  dotenv.config();
  
  import {
    ApplicationConfig,
    VideoConferencingExampleApplication,
  } from './application';
  export * from './application';
  //...

• Start the application npm start

Asymmetric Token Signing and Verification

If you are using asymmetric token signing and verification, you need to create a datasource for auth database. Example datasource file for auth:-

import {inject, lifeCycleObserver, LifeCycleObserver} from '@loopback/core';
import {juggler} from '@loopback/repository';
import {AuthDbSourceName} from '@sourceloop/core';
const DEFAULT_MAX_CONNECTIONS = 25;
const DEFAULT_DB_IDLE_TIMEOUT_MILLIS = 60000;
const DEFAULT_DB_CONNECTION_TIMEOUT_MILLIS = 2000;

const config = {
  name: 'auth',
  connector: 'postgresql',
  host: process.env.DB_HOST,
  port: process.env.DB_PORT,
  user: process.env.DB_USER,
  schema: process.env.DB_SCHEMA,
  password: process.env.DB_PASSWORD,
  database: process.env.AUTH_DB,
};

// Observe application's life cycle to disconnect the datasource when
// application is stopped. This allows the application to be shut down
// gracefully. The `stop()` method is inherited from `juggler.DataSource`.
// Learn more at https://loopback.io/doc/en/lb4/Life-cycle.html
@lifeCycleObserver('datasource')
export class AuthDataSource
  extends juggler.DataSource
  implements LifeCycleObserver
{
  static dataSourceName = AuthDbSourceName;

  static readonly defaultConfig = config;

  constructor(
    @inject('datasources.config.auth', {optional: true})
    dsConfig: object = config,
  ) {
    if (!!+(process.env.ENABLE_DB_CONNECTION_POOLING ?? 0)) {
      const dbPool = {
        max: +(process.env.DB_MAX_CONNECTIONS ?? DEFAULT_MAX_CONNECTIONS),
        idleTimeoutMillis: +(
          process.env.DB_IDLE_TIMEOUT_MILLIS ?? DEFAULT_DB_IDLE_TIMEOUT_MILLIS
        ),
        connectionTimeoutMillis: +(
          process.env.DB_CONNECTION_TIMEOUT_MILLIS ??
          DEFAULT_DB_CONNECTION_TIMEOUT_MILLIS
        ),
      };

      dsConfig = {...dsConfig, ...dbPool};
    }

    super(dsConfig);
  }
}

Environment Variables

Do not forget to set Environment variables. The examples below show a common configuration for a PostgreSQL Database running locally.

NODE_ENV=dev
LOG_LEVEL=DEBUG
HOST=0.0.0.0
PORT=3000
DB_HOST=localhost
DB_PORT=5432
DB_USER=pg_service_user
DB_PASSWORD=pg_service_user_password
DB_DATABASE=video_conferencing_db
DB_SCHEMA=public
JWT_SECRET=super_secret_string
JWT_ISSUER=https://authentication.service

Setting up a DataSource

Here is a sample Implementation DataSource implementation using environment variables and PostgreSQL as the data source.

import {inject, lifeCycleObserver, LifeCycleObserver} from '@loopback/core';
import {juggler} from '@loopback/repository';
import {VideoConfDatasource} from '@sourceloop/video-conferencing-service';

const config = {
  name: VideoConfDatasource,
  connector: 'postgresql',
  url: '',
  host: process.env.DB_HOST,
  port: process.env.DB_PORT,
  user: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  database: process.env.DB_DATABASE,
  schema: process.env.DB_SCHEMA,
};

@lifeCycleObserver('datasource')
export class VideoDbDataSource
  extends juggler.DataSource
  implements LifeCycleObserver
{
  static dataSourceName = VideoConfDatasource;
  static readonly defaultConfig = config;

  constructor(
    @inject(`datasources.config.${VideoConfDatasource}`, {optional: true})
    dsConfig: object = config,
  ) {
    super(dsConfig);
  }
}

Database Schema

Migrations

The migrations required for this service are processed during the installation automatically if you set the VIDEOCONF_MIGRATION or SOURCELOOP_MIGRATION env variable. The migrations use db-migrate with db-migrate-pg driver for migrations, so you will have to install these packages to use auto-migration. Please note that if you are using some pre-existing migrations or databases, they may be affected. In such a scenario, it is advised that you copy the migration files in your project root, using the VIDEOCONF_MIGRATION_COPY or SOURCELOOP_MIGRATION_COPY env variables. You can customize or cherry-pick the migrations in the copied files according to your specific requirements and then apply them to the DB.

This migration script supports both MySQL and PostgreSQL databases, controlled by environment variables. By setting MYSQL_MIGRATION to 'true', the script runs migrations using MySQL configuration files; otherwise, it defaults to PostgreSQL. .

Additionally, there is now an option to choose between SQL migration or PostgreSQL migration. NOTE : For @sourceloop/cli users, this choice can be specified during the scaffolding process by selecting the "type of datasource" option.

API's Details

Visit the OpenAPI spec docs

Feedback

If you've noticed a bug or have a question or have a feature request, search the issue tracker to see if someone else in the community has already created a ticket. If not, go ahead and make one! All feature requests are welcome. Implementation time may vary. Feel free to contribute the same, if you can. If you think this extension is useful, please star it. Appreciation really helps in keeping this project alive.