mirror of
https://github.com/k3s-io/kubernetes.git
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108 lines
3.2 KiB
Go
108 lines
3.2 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"context"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"runtime"
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"testing"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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clientset "k8s.io/client-go/kubernetes"
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restclient "k8s.io/client-go/rest"
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"k8s.io/component-base/metrics/testutil"
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"k8s.io/kubernetes/test/integration/framework"
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)
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func scrapeMetrics(s *httptest.Server) (testutil.Metrics, error) {
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req, err := http.NewRequest("GET", s.URL+"/metrics", nil)
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if err != nil {
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return nil, fmt.Errorf("Unable to create http request: %v", err)
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}
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("Unable to contact metrics endpoint of master: %v", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("Non-200 response trying to scrape metrics from master: %v", resp)
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}
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metrics := testutil.NewMetrics()
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data, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("Unable to read response: %v", resp)
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}
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err = testutil.ParseMetrics(string(data), &metrics)
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return metrics, err
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}
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func checkForExpectedMetrics(t *testing.T, metrics testutil.Metrics, expectedMetrics []string) {
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for _, expected := range expectedMetrics {
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if _, found := metrics[expected]; !found {
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t.Errorf("Master metrics did not include expected metric %q", expected)
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}
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}
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}
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func TestMasterProcessMetrics(t *testing.T) {
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if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
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t.Skipf("not supported on GOOS=%s", runtime.GOOS)
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}
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_, s, closeFn := framework.RunAMaster(nil)
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defer closeFn()
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metrics, err := scrapeMetrics(s)
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if err != nil {
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t.Fatal(err)
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}
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checkForExpectedMetrics(t, metrics, []string{
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"process_start_time_seconds",
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"process_cpu_seconds_total",
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"process_open_fds",
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"process_resident_memory_bytes",
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})
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}
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func TestApiserverMetrics(t *testing.T) {
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_, s, closeFn := framework.RunAMaster(nil)
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defer closeFn()
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// Make a request to the apiserver to ensure there's at least one data point
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// for the metrics we're expecting -- otherwise, they won't be exported.
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client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &schema.GroupVersion{Group: "", Version: "v1"}}})
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if _, err := client.CoreV1().Pods(metav1.NamespaceDefault).List(context.TODO(), metav1.ListOptions{}); err != nil {
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t.Fatalf("unexpected error getting pods: %v", err)
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}
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metrics, err := scrapeMetrics(s)
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if err != nil {
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t.Fatal(err)
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}
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checkForExpectedMetrics(t, metrics, []string{
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"apiserver_request_total",
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"apiserver_request_duration_seconds_sum",
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"etcd_request_duration_seconds_sum",
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})
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}
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