K6

K6 check runs the k6 load testing suite and ingests the junit exported result in a container at a specified path as defined in testResults.

k6-junit
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: k6-junit
spec:
  interval: 120
  junit:
    - testResults: "/tmp/"
      name: k6-junit
      display:
        template: |
          ✅ {{.results.passed}} ❌ {{.results.failed}} in 🕑 {{.results.duration}}
          {{  range $r := .results.suites}}
          {{- if gt (conv.ToInt $r.failed)  0 }}
            {{$r.name}} ✅ {{$r.passed}} ❌ {{$r.failed}} in 🕑 {{$r.duration}}
          {{- end }}
          {{- end }}
      spec:
        containers:
          - name: k6
            image: ghcr.io/flanksource/canary-k6:latest
            command: ["/start.sh"]

Using the k6-junit utility to export JUnit results to the testResults folder, canary-checker picks up the results and make then available display formatting and health evaluation.

start.sh
mkdir -p /tmp/junit-results
k6 -q run script.js
cp /tmp/*.xml /tmp/junit-results/
touch /tmp/junit-results/done

script.js
import { check } from "k6";
import * as http from "k6/http";
import { Rate } from "k6/metrics";
import { jUnit } from "./node_modules/k6-junit/index.js";

export const errors = new Rate("errors");

export const options = {
    iterations: 20,
    thresholds: {
        checks: ["rate<2"],
    }
};

let i = 1;

export default function() {
    const res = http.get(`http://jsonplaceholder.typicode.com/users/${i++}`);
    const result = check(res, {
        "is status 200": r => r.status === 201,
        "not empty": r => Object.keys(r.json()).length > 0
    });
    errors.add(result ? 0 : 1);
}

export function handleSummary(data) {
    return {
        "/tmp/junit.xml": jUnit(data)
    };
}

For a complete working example, see canary-checker-examples/k6

Field	Description	Scheme
name*	Name of the check, must be unique within the canary	string
spec*	Pod specification	Spec
testResults*	Path to JUnit test results	string
timeout	Timeout in minutes to wait for specified container to finish its job. Defaults to 5	integer
description	Description for the check	string
display	Expression to change the formatting of the display	Expression
icon	Icon for overwriting default icon on the dashboard	Icon
labels	Labels for check	map[string]string
metrics	Metrics to export from	[]Metrics
test	Evaluate whether a check is healthy	Expression
transform	Transform data from a check into multiple individual checks	Expression

Test Result Variables

See JUnit Test Results for the schema that is ingested and can be used for evaluating health or formatting the display.