mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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133b288681
Previously multiple scrape jobs could create multiple watchers for the same apiURL. Now only a single watcher is used. This should reduce load on Kubernetes API server when many scrape job configs use Kubernetes service discovery.
116 lines
3.3 KiB
Go
116 lines
3.3 KiB
Go
package kubernetes
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import (
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"bytes"
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"testing"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
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)
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func TestParseEndpointsListFailure(t *testing.T) {
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f := func(s string) {
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t.Helper()
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r := bytes.NewBufferString(s)
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objectsByKey, _, err := parseEndpointsList(r)
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if err == nil {
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t.Fatalf("expecting non-nil error")
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}
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if len(objectsByKey) != 0 {
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t.Fatalf("unexpected non-empty objectsByKey: %v", objectsByKey)
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}
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}
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f(``)
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f(`[1,23]`)
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f(`{"items":[{"metadata":1}]}`)
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f(`{"items":[{"metadata":{"labels":[1]}}]}`)
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}
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func TestParseEndpointsListSuccess(t *testing.T) {
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data := `
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{
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"kind": "EndpointsList",
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"apiVersion": "v1",
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"metadata": {
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"selfLink": "/api/v1/endpoints",
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"resourceVersion": "128055"
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},
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"items": [
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{
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"metadata": {
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"name": "kubernetes",
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"namespace": "default",
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"selfLink": "/api/v1/namespaces/default/endpoints/kubernetes",
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"uid": "0972c7d9-c267-4b93-a090-a417eeb9b385",
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"resourceVersion": "150",
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"creationTimestamp": "2020-03-16T20:44:25Z",
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"labels": {
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"foo": "bar"
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},
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"annotations": {
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"x": "y"
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}
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},
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"subsets": [
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{
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"addresses": [
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{
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"hostname": "aaa.bbb",
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"nodeName": "foobar",
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"ip": "172.17.0.2",
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"targetRef": {
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"kind": "Pod",
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"namespace": "kube-system",
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"name": "coredns-6955765f44-lnp6t",
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"uid": "cbddb2b6-5b85-40f1-8819-9a59385169bb",
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"resourceVersion": "124878"
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}
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}
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],
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"ports": [
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{
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"name": "https",
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"port": 8443,
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"protocol": "TCP"
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}
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]
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}
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]
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}
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]
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}
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`
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r := bytes.NewBufferString(data)
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objectsByKey, meta, err := parseEndpointsList(r)
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if err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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expectedResourceVersion := "128055"
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if meta.ResourceVersion != expectedResourceVersion {
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t.Fatalf("unexpected resource version; got %s; want %s", meta.ResourceVersion, expectedResourceVersion)
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}
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sortedLabelss := getSortedLabelss(objectsByKey)
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expectedLabelss := [][]prompbmarshal.Label{
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discoveryutils.GetSortedLabels(map[string]string{
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"__address__": "172.17.0.2:8443",
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"__meta_kubernetes_endpoint_address_target_kind": "Pod",
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"__meta_kubernetes_endpoint_address_target_name": "coredns-6955765f44-lnp6t",
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"__meta_kubernetes_endpoint_hostname": "aaa.bbb",
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"__meta_kubernetes_endpoint_node_name": "foobar",
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"__meta_kubernetes_endpoint_port_name": "https",
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"__meta_kubernetes_endpoint_port_protocol": "TCP",
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"__meta_kubernetes_endpoint_ready": "true",
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"__meta_kubernetes_endpoints_name": "kubernetes",
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"__meta_kubernetes_endpoints_annotation_x": "y",
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"__meta_kubernetes_endpoints_annotationpresent_x": "true",
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"__meta_kubernetes_endpoints_label_foo": "bar",
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"__meta_kubernetes_endpoints_labelpresent_foo": "true",
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"__meta_kubernetes_namespace": "default",
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}),
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}
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if !areEqualLabelss(sortedLabelss, expectedLabelss) {
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t.Fatalf("unexpected labels:\ngot\n%v\nwant\n%v", sortedLabelss, expectedLabelss)
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}
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}
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