VictoriaMetrics/lib/promscrape/discovery/kubernetes/endpoints_test.go

108 lines
2.9 KiB
Go

package kubernetes
import (
"reflect"
"testing"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
)
func TestParseEndpointsListFailure(t *testing.T) {
f := func(s string) {
t.Helper()
els, err := parseEndpointsList([]byte(s))
if err == nil {
t.Fatalf("expecting non-nil error")
}
if els != nil {
t.Fatalf("unexpected non-nil EnpointsList: %v", els)
}
}
f(``)
f(`[1,23]`)
f(`{"items":[{"metadata":1}]}`)
f(`{"items":[{"metadata":{"labels":[1]}}]}`)
}
func TestParseEndpointsListSuccess(t *testing.T) {
data := `
{
"kind": "EndpointsList",
"apiVersion": "v1",
"metadata": {
"selfLink": "/api/v1/endpoints",
"resourceVersion": "128055"
},
"items": [
{
"metadata": {
"name": "kubernetes",
"namespace": "default",
"selfLink": "/api/v1/namespaces/default/endpoints/kubernetes",
"uid": "0972c7d9-c267-4b93-a090-a417eeb9b385",
"resourceVersion": "150",
"creationTimestamp": "2020-03-16T20:44:25Z"
},
"subsets": [
{
"addresses": [
{
"hostname": "aaa.bbb",
"nodeName": "foobar",
"ip": "172.17.0.2",
"targetRef": {
"kind": "Pod",
"namespace": "kube-system",
"name": "coredns-6955765f44-lnp6t",
"uid": "cbddb2b6-5b85-40f1-8819-9a59385169bb",
"resourceVersion": "124878"
}
}
],
"ports": [
{
"name": "https",
"port": 8443,
"protocol": "TCP"
}
]
}
]
}
]
}
`
els, err := parseEndpointsList([]byte(data))
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if len(els.Items) != 1 {
t.Fatalf("unexpected length of EndpointsList.Items; got %d; want %d", len(els.Items), 1)
}
endpoint := els.Items[0]
// Check endpoint.appendTargetLabels()
labelss := endpoint.appendTargetLabels(nil, nil, nil)
var sortedLabelss [][]prompbmarshal.Label
for _, labels := range labelss {
sortedLabelss = append(sortedLabelss, getSortedLabels(labels))
}
expectedLabelss := [][]prompbmarshal.Label{
getSortedLabels(map[string]string{
"__address__": "172.17.0.2:8443",
"__meta_kubernetes_endpoint_address_target_kind": "Pod",
"__meta_kubernetes_endpoint_address_target_name": "coredns-6955765f44-lnp6t",
"__meta_kubernetes_endpoint_hostname": "aaa.bbb",
"__meta_kubernetes_endpoint_node_name": "foobar",
"__meta_kubernetes_endpoint_port_name": "https",
"__meta_kubernetes_endpoint_port_protocol": "TCP",
"__meta_kubernetes_endpoint_ready": "true",
"__meta_kubernetes_endpoints_name": "kubernetes",
"__meta_kubernetes_namespace": "default",
}),
}
if !reflect.DeepEqual(sortedLabelss, expectedLabelss) {
t.Fatalf("unexpected labels:\ngot\n%v\nwant\n%v", sortedLabelss, expectedLabelss)
}
}