This is documentation for the next version of K6. For the latest stable release, go to the latest version.

Documentation

Grafana k6

JavaScript API

k6/net/grpc

Client

Open source

Client

Client is a gRPC client that can interact with a gRPC server.

Method	Description
Client.load(importPaths, …protoFiles)	Loads and parses the given protocol buffer definitions to be made available for RPC requests.
Client.loadProtoset(protosetPath)	Loads and parses the given protoset file to be made available for RPC requests.
Client.connect(address [,params])	Opens a connection to the given gRPC server.
Client.invoke(url, request [,params])	Makes an unary RPC for the given service/method and returns a Response.
Client.close()	Close the connection to the gRPC service.

Examples

import grpc from 'k6/net/grpc';

const client = new grpc.Client();
// Download quickpizza.proto for grpc-quickpizza.grafana.com, located at:
// https://raw.githubusercontent.com/grafana/quickpizza/refs/heads/main/proto/quickpizza.proto
// and put it in the same folder as this script.
client.load(null, 'quickpizza.proto');

export default () => {
  client.connect('grpc-quickpizza.grafana.com:443', { timeout: '5s' });

  const response = client.invoke('quickpizza.GRPC/RatePizza', {
    ingredients: ['Tomatoes', 'Cheese'],
    dough: 'Thin'
  });
  console.log(response.message.starsRating); // should print a number between 1-5

  client.close();
};

import grpc from 'k6/net/grpc';
import { check } from 'k6';

const client = new grpc.Client();
client.load([], 'authorization.proto', 'route_guide.proto');

export function setup() {
  client.connect('auth.googleapis.com:443');
  const resp = client.invoke('google.cloud.authorization.v1.AuthService/GetAccessToken', {
    username: 'john.smith@k6.io',
    password: 'its-a-secret',
  });
  client.close();
  return resp.message.accessToken;
}

export default (token) => {
  client.connect('route.googleapis.com:443');
  const metadata = {
    authorization: `bearer ${token}`,
  };
  const response = client.invoke(
    'google.cloud.route.v1.RoutingService/GetFeature',
    {
      latitude: 410248224,
      longitude: -747127767,
    },
    { metadata }
  );
  check(response, { 'status is OK': (r) => r && r.status === grpc.StatusOK });
  client.close();
};

import grpc from 'k6/net/grpc';
import { check } from 'k6';

const client = new grpc.Client();
client.load([], 'language_service.proto');

export default () => {
  if (__ITER == 0) {
    client.connect('language.googleapis.com:443');
  }
  const response = client.invoke('google.cloud.language.v1.LanguageService/AnalyzeSentiment', {});
  check(response, { 'status is OK': (r) => r && r.status === grpc.StatusOK });
  // Do NOT close the client
};