Creating client to talk to the gRPC server RateKeeper

client.ts

import * as path from 'path';
let grpc: any = require('grpc');
import {
  IPublicCloudMeter, IProtobufTimestamp, IRateKeeperClient, IRateKeeperGetMeterResponse
} from 'voyager-shared';

class RateKeeperClient {

  public static createGrpcClient(host: string, port: number): IRateKeeperClient {
    let protoPath: string = path.join('[relative-path-to]/ratekeeper.proto');
    let proto: any = grpc.load(protoPath).ratekeeper;
    let connectionString: string = host + ':' + port;
    return new proto.RateKeeperService(connectionString, grpc.credentials.createInsecure());
  }
}

// connect to the grpc server
let client: IRateKeeperClient = RateKeeperClient.createGrpcClient('0.0.0.0', 50051);

client.getMeter({ meterId: 'd83fa551-8030-416a-b443-306aef06a5d2' }, (error: any, response: IRateKeeperGetMeterResponse) => {
  if (error) {
    console.error(error);
    process.exit(1);
  } else {
    console.log('meter:', (<IPublicCloudMeter>response.meter));
  }
});