All files / microservices listeners-controller.ts

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100% Branches 0/0
75% Functions 3/4
73.33% Lines 11/15
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import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
import { ListenerMetadataExplorer } from './listener-metadata-explorer';
import { Server } from './server/server';
import { ClientProxyFactory } from './client/client-proxy-factory';
import { MetadataScanner } from '@nestjs/core/metadata-scanner';
import { CustomTransportStrategy } from './interfaces';
import { ClientsContainer } from './container';
import { RpcContextCreator } from './context/rpc-context-creator';
 
export class ListenersController {
  private readonly metadataExplorer = new ListenerMetadataExplorer(
    new MetadataScanner(),
  );
 
  constructor(
    private readonly clientsContainer: ClientsContainer,
    private readonly contextCreator: RpcContextCreator,
  ) {}
 
  public bindPatternHandlers(
    instance: Controller,
    server: Server & CustomTransportStrategy,
    module: string,
  ) {
    const patternHandlers = this.metadataExplorer.explore(instance);
    patternHandlers.forEach(({ pattern, targetCallback }) => {
      const proxy = this.contextCreator.create(
        instance,
        targetCallback,
        module,
      );
      server.addHandler(pattern, proxy);
    });
  }
 
  public bindClientsToProperties(instance: Controller) {
    for (const {
      property,
      metadata,
    } of this.metadataExplorer.scanForClientHooks(instance)) {
      const client = ClientProxyFactory.create(metadata);
 
      this.clientsContainer.addClient(client);
      Reflect.set(instance, property, client);
    }
  }
}