This is documentation for the next version of K6. For the latest stable release, go to the latest version.
Stream.on()
Set up handler functions for various events on the gRPC stream.
Parameter | Type | Description |
---|---|---|
event | string | The event name to define a handler for. |
handler | EventHandler | The function to call when the event happens. |
Possible events:
Event name | Description |
---|---|
data | Emitted when the server sends data. |
error | Emitted when an error occurs. In case of the error, an Error object sends to the handler function. |
end | Emitted when the server closes the incoming stream. |
Example
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) => {
console.log('Finished trip with', stats.pointCount, 'points');
console.log('Passed', stats.featureCount, 'features');
console.log('Traveled', stats.distance, 'meters');
console.log('It took', stats.elapsedTime, 'seconds');
});
// sets up a handler for the end event (stream closes)
stream.on('end', function () {
// The server has finished sending
client.close();
console.log('All done');
});
// sets up a handler for the error event (an error occurs)
stream.on('error', function (e) {
// An error has occurred and the stream has been closed.
console.log('Error: ' + JSON.stringify(e));
});
sleep(1);
};