Libreria di Google PubSub per NestJs

Questa repository contiene il publisher e il subscriber per i messaggi di Google PubSub.

Client

E' possibile utilizzare il client importando il modulo PubSubClientCoreModule

Esempio di utilizzo

import { Module } from '@nestjs/common'
import { ConfigModule, PubSubClientConfig } from './config'

@Module({
    imports: [
        ConfigModule,
        PubSubClientCoreModule.forRootAsync({
            imports: [ConfigModule],
            useClass: PubSubClientConfig,
        }),
    ],
    controllers: [],
    providers: [],
})
export class AppModule {}

Server

E' possibile utilizzare il server per rimanere in ascolto sui topic utilizzando la funzione makeTransportStrategy.

Esempio di utilizzo

import { NestFactory } from '@nestjs/core'
import { AppModule } from './app.module'
import { NestExpressApplication } from '@nestjs/platform-express'
import { ClientConfig } from '@google-cloud/pubsub'
import { ConfigService } from './config'
import { makeTransportStrategy } from '@advision/google-pubsub-nestjs'

async function bootstrap() {
    const app = await NestFactory.create<NestExpressApplication>(AppModule)
    const configService = app.get(ConfigService)

    const options: ClientConfig = {}
    if (configService.get('PUBSUB_NAMESPACE') === 'Dev') {
        options['projectId'] = configService.get('PUBSUB_EMULATOR_PROJECT')
        options['apiEndpoint'] = configService.get('PUBSUB_EMULATOR_HOST')
    } else {
        options['keyFilename'] = configService.get(
            'PUBSUB_SERVICE_ACCOUNT_PATH'
        )
    }

    app.connectMicroservice({
        strategy: makeTransportStrategy({
            prefixName: configService.get('PUBSUB_NAMESPACE'),
            clientConfig: options,
        }),
    })

    app.startAllMicroservices()
    return app.listen(3000, '0.0.0.0')
}

bootstrap()