NestJS Azure Service Bus

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A dynamic module for NestJS that provides integration with Azure Service Bus and Azure Service Bus Admin Functionalities.

Installation

npm install nestjs-azure-service-bus-admin

Description

The NestJS Azure Service Bus package allows you to easily integrate Azure Service Bus into your NestJS applications. It provides decorators for injecting Azure Service Bus senders and receivers, as well as a dynamic module for configuring the Azure Service Bus client. Also, you will be able to create Service Bus Resources from the ServiceBusAdminService Services, that could be used from outside or inside any NestJS Module

Usage

Importing the module

To use the Azure Service Bus module, import it into your NestJS application's root module:

import { Module } from '@nestjs/common';
import { ServiceBusModule } from 'nestjs-azure-service-bus-admin';

@Module({
  imports: [
    ServiceBusModule.forRoot({
      connectionString: '<your-connection-string>',
    }),
  ],
})
export class AppModule {}

Replace <your-connection-string> with your Azure Service Bus connection string.

Injecting Senders and Receivers

You can use the Sender and Receiver decorators provided by the module to inject Azure Service Bus senders and receivers into your classes:

import { Injectable } from '@nestjs/common';
import { Sender, Receiver } from 'nestjs-azure-service-bus-admin';

@Injectable()
export class MyService {
  constructor(
    @Sender('my-queue') private readonly sender: ServiceBusSender,
    @Receiver('my-queue') private readonly receiver: ServiceBusReceiver,
  ) {}

  // Use the sender and receiver in your methods
}

Replace 'my-queue' with the name of your Azure Service Bus queue.

Configuration Options

The forRoot method of the ServiceBusModule accepts a configuration object with two possible options:

• connectionString: The connection string for your Azure Service Bus namespace.
• fullyQualifiedNamespace: The fully qualified namespace of your Azure Service Bus namespace.

You can provide either the connectionString or the fullyQualifiedNamespace, but not both.

Dynamic Module Options

The forFeature method of the ServiceBusModule allows you to configure senders and receivers dynamically. It accepts an options object with two properties:

• senders: An array of sender names.
• receivers: An array of receiver names.

import { Module } from '@nestjs/common';
import { ServiceBusModule } from 'nestjs-azure-service-bus-admin';

@Module({
  imports: [
    ServiceBusModule.forFeature({
      senders: ['queue-example'],
      receivers: ['queue-example'],
    }),
  ],
})
export class QueueModule {}

This will create senders and receivers for the specified queues.

import { ServiceBusSender } from '@azure/service-bus';
import { Injectable } from '@nestjs/common';
import { Sender } from 'nestjs-azure-service-bus-admin';

@Injectable()
export class QueueSenderService {
  constructor(
    @Sender('test-queue') private readonly sender: ServiceBusSender,
  ) {}
  async sendMessage(body: string) {
    await this.sender.sendMessages({ body });
  }
}

import { ServiceBusReceiver } from '@azure/service-bus';
import { Injectable, OnModuleInit } from '@nestjs/common';
import { Receiver } from 'nestjs-azure-service-bus-admin';

@Injectable()
export class QueueReceiverService implements OnModuleInit {
  constructor(
    @Receiver('test-queue') private readonly receiver: ServiceBusReceiver,
  ) {}
  onModuleInit() {
    this.receiver.subscribe({
      processMessage: async (message) => {
        console.log(`message.body: ${message.body}`);
      },
      processError: async (args) => {
        console.log(
          `Error occurred with ${args.entityPath} within ${args.fullyQualifiedNamespace}: `,
          args.error,
        );
      },
    });
  }
}

import { Module } from '@nestjs/common';
import { QueueSenderService } from './queue-sender.service';
import { ServiceBusModule } from 'nestjs-azure-service-bus';
import { QueueReceiverService } from './queue-receiver.service';

@Module({
  imports: [
    ServiceBusModule.forFeature({
      receivers: ['test-queue'],
      senders: ['test-queue'],
    }),
  ],
  providers: [QueueSenderService, QueueReceiverService],
  exports: [QueueSenderService],
})
export class QueueModule {}

for another method the ServiceBusReceiver and ServiceBusSender see the azure sdk

ServiceBusAdminService

This library provides a new functionality to manage Azure Service Bus resources wherever yoy need on your application

1. Use it directly from the class/service ServiceBusAdminService example:

const serviceClient = new ServiceBusAdminService({
  connectionString: `<your-connection-string>`,
});
const queue = await serviceClient.createQueue('my-queue');
const topic = await serviceClient.createTopic('my-topic');
const subscription = await serviceClient.createSubscription(
  'my-topic',
  'my-sub1',
  { ...options },
);

2. Use it in combination with the useAdminClient function, to make it async onModule Start process, example: On your app's module

@Module({
  imports: [
    ServiceBusModule.forRootAsync({
      useFactory: () => ({
        connectionString: `<your-connection-string>`,
      }),
      useAdminClient: async (service: ServiceBusAdminService) => {
        const queue = await serviceClient.createQueue("my-queue");
        const topic = await serviceClient.createTopic('my-topic');
        const subscription = await serviceClient.createSubscription('my-topic', 'my-sub1', {...options});
      }
    }),
  ],
  controllers: [AppController],
  providers: [
    AppService,
  ],
  })

ServiceBusClientService

Service class for interacting with Azure Service Bus using client functionalities, for creating and formating messages.

Service Functions:

1. generateMassTransitMessage: Generates a MassTransit format message ready to be send to Azure Service Bus. Input type must be IMassTransitMessage

Usage:

1. Imports the Service to the module you will used:

import { Module } from '@nestjs/common';
import {
  ServiceBusModule,
  ServiceBusClientService,
} from 'nestjs-azure-service-bus-admin';
import { MyAppResolver } from './my-app.resolver';
import { MyAppService } from './my-app.service';

@Module({
  imports: [
    ServiceBusModule.forFeature({
      senders: ['my-queue'],
    }),
  ],
  providers: [MyAppResolver, MyAppService, ServiceBusClientService],
})
export class MyAppModule {}

2. Define the injected service in your local service:

import { Injectable } from '@nestjs/common';
import {
  Sender,
  ServiceBusClientService,
  IMassTransitMessage
} from 'nestjs-azure-service-bus-admin';
import { ServiceBusSender } from '@azure/service-bus';

@Injectable()
export class MyAppService {
  constructor(
    @Sender('my-queue')
    private readonly senderCreate: ServiceBusSender,
    private readonly serviceBusClientService: ServiceBusClientService,
  ) {}
}

3. Use the injected service:

const message = this.serviceBusClientService.generateMassTransitMessage({
  connString: MY_CONNECTION_STR,
  queueOrTopic: AZ_SERVICES_BUS_TOPIC,
  messages: MY_MESSAGE,
  messageType: SERVICE_BUS_NOTIFIACTION_URN,
} as IMassTransitMessage);

Support

• For issues or feature requests, please open an issue.
• For contributions, please refer to the contribution guide.

License

This package is MIT licensed.