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Documentation

Event Handler

Open source

Event Handler

The function to call for various events on the gRPC stream. It is set up using the stream.on() method.

Name	Type	Description
`data`	object or `Error`	It’s either object with the data from server (a message) or an error object, in case of `error` event
`metadata`	`Metadata`	The object that represents the gRPC stream’s message metadata.

Example

JavaScript
import { Client, Stream } from 'k6/net/grpc';
import { sleep } from 'k6';

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

export default () => {
  if (__ITER == 0) {
    client.connect('127.0.0.1:10000', { plaintext: true });
  }

  const stream = new Stream(client, 'main.RouteGuide/RecordRoute');

  // sets up a handler for the data (server sends data) event
  stream.on('data', (stats, metadata) => {
    console.log('It took', stats.elapsedTime, 'seconds');
    console.log('This message has been received:', metadata.ts);
  });

  stream.on('end', function () {
    // The server has finished sending
    client.close();
  });

  sleep(1);
};