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VictoriaMetrics/lib/promscrape/discovery/kubernetes/endpointslice_test.go
Zakhar Bessarab 4e71003620
lib/promscrape/discovery/kubernetes: follow-up for d5e94721db (#4255) 
- add changelog reference to an author
- fix tests
- add metadata to match Prometheus behavior

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
2023-05-05 14:41:17 +02:00

512 lines
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package kubernetes
import (
"bytes"
"testing"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
)
func TestParseEndpointSliceListFail(t *testing.T) {
f := func(data string) {
r := bytes.NewBufferString(data)
objectsByKey, _, err := parseEndpointSliceList(r)
if err == nil {
t.Errorf("unexpected result, test must fail! data: %s", data)
}
if len(objectsByKey) != 0 {
t.Errorf("EndpointSliceList must be emptry, got: %v", objectsByKey)
}
}
f(``)
f(`{"items": [1,2,3]`)
f(`{"items": [
{
"metadata": {
"name": "kubernetes"}]}`)
}
func TestParseEndpointSliceListSuccess(t *testing.T) {
data := `{
"kind": "EndpointSliceList",
"apiVersion": "discovery.k8s.io/v1",
"metadata": {
"selfLink": "/apis/discovery.k8s.io/v1/endpointslices",
"resourceVersion": "1177"
},
"items": [
{
"metadata": {
"name": "kubernetes",
"namespace": "default",
"selfLink": "/apis/discovery.k8s.io/v1/namespaces/default/endpointslices/kubernetes",
"uid": "a60d9173-5fe4-4bc3-87a6-269daee71f8a",
"resourceVersion": "159",
"generation": 1,
"creationTimestamp": "2020-09-07T14:27:22Z",
"labels": {
"kubernetes.io/service-name": "kubernetes"
},
"managedFields": [
{
"manager": "kube-apiserver",
"operation": "Update",
"apiVersion": "discovery.k8s.io/v1",
"time": "2020-09-07T14:27:22Z",
"fieldsType": "FieldsV1",
"fieldsV1": {"f:addressType":{},"f:endpoints":{},"f:metadata":{"f:labels":{".":{},"f:kubernetes.io/service-name":{}}},"f:ports":{}}
}
]
},
"addressType": "IPv4",
"endpoints": [
{
"addresses": [
"172.18.0.2"
],
"conditions": {
"ready": true
}
}
],
"ports": [
{
"name": "https",
"protocol": "TCP",
"port": 6443
}
]
},
{
"metadata": {
"name": "kube-dns-22mvb",
"generateName": "kube-dns-",
"namespace": "kube-system",
"selfLink": "/apis/discovery.k8s.io/v1/namespaces/kube-system/endpointslices/kube-dns-22mvb",
"uid": "7c95c854-f34c-48e1-86f5-bb8269113c11",
"resourceVersion": "604",
"generation": 5,
"creationTimestamp": "2020-09-07T14:27:39Z",
"labels": {
"endpointslice.kubernetes.io/managed-by": "endpointslice-controller.k8s.io",
"kubernetes.io/service-name": "kube-dns"
},
"annotations": {
"endpoints.kubernetes.io/last-change-trigger-time": "2020-09-07T14:28:35Z"
},
"ownerReferences": [
{
"apiVersion": "v1",
"kind": "Service",
"name": "kube-dns",
"uid": "509e80d8-6d05-487b-bfff-74f5768f1024",
"controller": true,
"blockOwnerDeletion": true
}
],
"managedFields": [
{
"manager": "kube-controller-manager",
"operation": "Update",
"apiVersion": "discovery.k8s.io/v1",
"time": "2020-09-07T14:28:35Z",
"fieldsType": "FieldsV1",
"fieldsV1": {"f:addressType":{},"f:endpoints":{},"f:metadata":{"f:annotations":{".":{},"f:endpoints.kubernetes.io/last-change-trigger-time":{}},"f:generateName":{},"f:labels":{".":{},"f:endpointslice.kubernetes.io/managed-by":{},"f:kubernetes.io/service-name":{}},"f:ownerReferences":{".":{},"k:{\"uid\":\"509e80d8-6d05-487b-bfff-74f5768f1024\"}":{".":{},"f:apiVersion":{},"f:blockOwnerDeletion":{},"f:controller":{},"f:kind":{},"f:name":{},"f:uid":{}}}},"f:ports":{}}
}
]
},
"addressType": "IPv4",
"endpoints": [
{
"addresses": [
"10.244.0.3"
],
"conditions": {
"ready": true
},
"targetRef": {
"kind": "Pod",
"namespace": "kube-system",
"name": "coredns-66bff467f8-z8czk",
"uid": "36a545ff-dbba-4192-a5f6-1dbb0c21c73d",
"resourceVersion": "603"
},
"topology": {
"kubernetes.io/hostname": "kind-control-plane"
}
}
],
"ports": [
{
"name": "metrics",
"protocol": "TCP",
"port": 9153
},
{
"name": "dns",
"protocol": "UDP",
"port": 53
}
]
}
]
}`
r := bytes.NewBufferString(data)
objectsByKey, meta, err := parseEndpointSliceList(r)
if err != nil {
t.Errorf("cannot parse data for EndpointSliceList: %v", err)
return
}
expectedResourceVersion := "1177"
if meta.ResourceVersion != expectedResourceVersion {
t.Fatalf("unexpected resource version; got %s; want %s", meta.ResourceVersion, expectedResourceVersion)
}
sortedLabelss := getSortedLabelss(objectsByKey)
expectedLabelss := []*promutils.Labels{
promutils.NewLabelsFromMap(map[string]string{
"__address__": "10.244.0.3:53",
"__meta_kubernetes_endpointslice_address_target_kind": "Pod",
"__meta_kubernetes_endpointslice_address_target_name": "coredns-66bff467f8-z8czk",
"__meta_kubernetes_endpointslice_address_type": "IPv4",
"__meta_kubernetes_endpointslice_annotation_endpoints_kubernetes_io_last_change_trigger_time": "2020-09-07T14:28:35Z",
"__meta_kubernetes_endpointslice_annotationpresent_endpoints_kubernetes_io_last_change_trigger_time": "true",
"__meta_kubernetes_endpointslice_endpoint_conditions_ready": "true",
"__meta_kubernetes_endpointslice_endpoint_topology_kubernetes_io_hostname": "kind-control-plane",
"__meta_kubernetes_endpointslice_endpoint_topology_present_kubernetes_io_hostname": "true",
"__meta_kubernetes_endpointslice_label_endpointslice_kubernetes_io_managed_by": "endpointslice-controller.k8s.io",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "kube-dns",
"__meta_kubernetes_endpointslice_labelpresent_endpointslice_kubernetes_io_managed_by": "true",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "kube-dns-22mvb",
"__meta_kubernetes_endpointslice_port": "53",
"__meta_kubernetes_endpointslice_port_name": "dns",
"__meta_kubernetes_endpointslice_port_protocol": "UDP",
"__meta_kubernetes_namespace": "kube-system",
}),
promutils.NewLabelsFromMap(map[string]string{
"__address__": "10.244.0.3:9153",
"__meta_kubernetes_endpointslice_address_target_kind": "Pod",
"__meta_kubernetes_endpointslice_address_target_name": "coredns-66bff467f8-z8czk",
"__meta_kubernetes_endpointslice_address_type": "IPv4",
"__meta_kubernetes_endpointslice_annotation_endpoints_kubernetes_io_last_change_trigger_time": "2020-09-07T14:28:35Z",
"__meta_kubernetes_endpointslice_annotationpresent_endpoints_kubernetes_io_last_change_trigger_time": "true",
"__meta_kubernetes_endpointslice_endpoint_conditions_ready": "true",
"__meta_kubernetes_endpointslice_endpoint_topology_kubernetes_io_hostname": "kind-control-plane",
"__meta_kubernetes_endpointslice_endpoint_topology_present_kubernetes_io_hostname": "true",
"__meta_kubernetes_endpointslice_label_endpointslice_kubernetes_io_managed_by": "endpointslice-controller.k8s.io",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "kube-dns",
"__meta_kubernetes_endpointslice_labelpresent_endpointslice_kubernetes_io_managed_by": "true",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "kube-dns-22mvb",
"__meta_kubernetes_endpointslice_port": "9153",
"__meta_kubernetes_endpointslice_port_name": "metrics",
"__meta_kubernetes_endpointslice_port_protocol": "TCP",
"__meta_kubernetes_namespace": "kube-system",
}),
promutils.NewLabelsFromMap(map[string]string{
"__address__": "172.18.0.2:6443",
"__meta_kubernetes_endpointslice_address_type": "IPv4",
"__meta_kubernetes_endpointslice_endpoint_conditions_ready": "true",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "kubernetes",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "kubernetes",
"__meta_kubernetes_endpointslice_port": "6443",
"__meta_kubernetes_endpointslice_port_name": "https",
"__meta_kubernetes_endpointslice_port_protocol": "TCP",
"__meta_kubernetes_namespace": "default",
}),
}
if !areEqualLabelss(sortedLabelss, expectedLabelss) {
t.Fatalf("unexpected labels,\ngot:\n%v,\nwant:\n%v", sortedLabelss, expectedLabelss)
}
}
func TestGetEndpointsliceLabels(t *testing.T) {
type testArgs struct {
containerPorts map[string][]ContainerPort
endpointPorts []EndpointPort
}
f := func(t *testing.T, args testArgs, wantLabels []*promutils.Labels) {
t.Helper()
eps := EndpointSlice{
Metadata: ObjectMeta{
Name: "test-eps",
Namespace: "default",
Labels: promutils.NewLabelsFromMap(map[string]string{
"kubernetes.io/service-name": "test-svc",
}),
},
Endpoints: []Endpoint{
{
Addresses: []string{
"10.13.15.15",
},
Conditions: EndpointConditions{
Ready: true,
},
Hostname: "foo.bar",
TargetRef: ObjectReference{
Kind: "Pod",
Namespace: "default",
Name: "test-pod",
},
Topology: map[string]string{
"x": "y",
},
},
},
AddressType: "foobar",
Ports: args.endpointPorts,
}
svc := Service{
Metadata: ObjectMeta{
Name: "test-svc",
Namespace: "default",
},
Spec: ServiceSpec{
ClusterIP: "1.2.3.4",
Type: "service-type",
Ports: []ServicePort{
{
Name: "test-port",
Port: 8081,
},
},
},
}
pod := Pod{
Metadata: ObjectMeta{
UID: "pod-uid",
Name: "test-pod",
Namespace: "default",
},
Spec: PodSpec{
NodeName: "test-node",
},
Status: PodStatus{
Phase: "abc",
PodIP: "192.168.15.1",
HostIP: "4.5.6.7",
},
}
node := Node{
Metadata: ObjectMeta{
Labels: promutils.NewLabelsFromMap(map[string]string{"node-label": "xyz"}),
},
}
for cn, ports := range args.containerPorts {
pod.Spec.Containers = append(pod.Spec.Containers, Container{
Name: cn,
Image: "test-image",
Ports: ports,
})
}
var gw groupWatcher
gw.m = map[string]*urlWatcher{
"pod": {
role: "pod",
objectsByKey: map[string]object{
"default/test-pod": &pod,
},
},
"service": {
role: "service",
objectsByKey: map[string]object{
"default/test-svc": &svc,
},
},
"node": {
role: "node",
objectsByKey: map[string]object{
"/test-node": &node,
},
},
}
gw.attachNodeMetadata = true
var sortedLabelss []*promutils.Labels
gotLabels := eps.getTargetLabels(&gw)
for _, lbs := range gotLabels {
lbs.Sort()
sortedLabelss = append(sortedLabelss, lbs)
}
if !areEqualLabelss(sortedLabelss, wantLabels) {
t.Fatalf("unexpected labels:\ngot\n%v\nwant\n%v", sortedLabelss, wantLabels)
}
}
t.Run("1 port from endpoint", func(t *testing.T) {
f(t, testArgs{
endpointPorts: []EndpointPort{
{
Name: "web",
Port: 8081,
Protocol: "foobar",
},
},
}, []*promutils.Labels{
promutils.NewLabelsFromMap(map[string]string{
"__address__": "10.13.15.15:8081",
"__meta_kubernetes_endpointslice_address_target_kind": "Pod",
"__meta_kubernetes_endpointslice_address_target_name": "test-pod",
"__meta_kubernetes_endpointslice_address_type": "foobar",
"__meta_kubernetes_endpointslice_endpoint_conditions_ready": "true",
"__meta_kubernetes_endpointslice_endpoint_hostname": "foo.bar",
"__meta_kubernetes_endpointslice_endpoint_topology_present_x": "true",
"__meta_kubernetes_endpointslice_endpoint_topology_x": "y",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "test-svc",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "test-eps",
"__meta_kubernetes_endpointslice_port": "8081",
"__meta_kubernetes_endpointslice_port_name": "web",
"__meta_kubernetes_endpointslice_port_protocol": "foobar",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_node_label_node_label": "xyz",
"__meta_kubernetes_node_labelpresent_node_label": "true",
"__meta_kubernetes_node_name": "test-node",
"__meta_kubernetes_pod_host_ip": "4.5.6.7",
"__meta_kubernetes_pod_ip": "192.168.15.1",
"__meta_kubernetes_pod_name": "test-pod",
"__meta_kubernetes_pod_node_name": "test-node",
"__meta_kubernetes_pod_phase": "abc",
"__meta_kubernetes_pod_ready": "unknown",
"__meta_kubernetes_pod_uid": "pod-uid",
"__meta_kubernetes_service_cluster_ip": "1.2.3.4",
"__meta_kubernetes_service_name": "test-svc",
"__meta_kubernetes_service_type": "service-type",
}),
})
})
t.Run("1 port from endpoint and 1 from pod", func(t *testing.T) {
f(t, testArgs{
containerPorts: map[string][]ContainerPort{"metrics": {{
Name: "http-metrics",
ContainerPort: 8428,
Protocol: "foobar",
}}},
endpointPorts: []EndpointPort{
{
Name: "web",
Port: 8081,
Protocol: "https",
},
},
}, []*promutils.Labels{
promutils.NewLabelsFromMap(map[string]string{
"__address__": "10.13.15.15:8081",
"__meta_kubernetes_endpointslice_address_target_kind": "Pod",
"__meta_kubernetes_endpointslice_address_target_name": "test-pod",
"__meta_kubernetes_endpointslice_address_type": "foobar",
"__meta_kubernetes_endpointslice_endpoint_conditions_ready": "true",
"__meta_kubernetes_endpointslice_endpoint_hostname": "foo.bar",
"__meta_kubernetes_endpointslice_endpoint_topology_present_x": "true",
"__meta_kubernetes_endpointslice_endpoint_topology_x": "y",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "test-svc",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "test-eps",
"__meta_kubernetes_endpointslice_port": "8081",
"__meta_kubernetes_endpointslice_port_name": "web",
"__meta_kubernetes_endpointslice_port_protocol": "https",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_node_label_node_label": "xyz",
"__meta_kubernetes_node_labelpresent_node_label": "true",
"__meta_kubernetes_node_name": "test-node",
"__meta_kubernetes_pod_host_ip": "4.5.6.7",
"__meta_kubernetes_pod_ip": "192.168.15.1",
"__meta_kubernetes_pod_name": "test-pod",
"__meta_kubernetes_pod_node_name": "test-node",
"__meta_kubernetes_pod_phase": "abc",
"__meta_kubernetes_pod_ready": "unknown",
"__meta_kubernetes_pod_uid": "pod-uid",
"__meta_kubernetes_service_cluster_ip": "1.2.3.4",
"__meta_kubernetes_service_name": "test-svc",
"__meta_kubernetes_service_type": "service-type",
}),
promutils.NewLabelsFromMap(map[string]string{
"__address__": "192.168.15.1:8428",
"__meta_kubernetes_endpointslice_address_target_kind": "Pod",
"__meta_kubernetes_endpointslice_address_target_name": "test-pod",
"__meta_kubernetes_endpointslice_address_type": "foobar",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "test-svc",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "test-eps",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_node_label_node_label": "xyz",
"__meta_kubernetes_node_labelpresent_node_label": "true",
"__meta_kubernetes_node_name": "test-node",
"__meta_kubernetes_pod_container_image": "test-image",
"__meta_kubernetes_pod_container_name": "metrics",
"__meta_kubernetes_pod_container_port_name": "http-metrics",
"__meta_kubernetes_pod_container_port_number": "8428",
"__meta_kubernetes_pod_container_port_protocol": "foobar",
"__meta_kubernetes_pod_host_ip": "4.5.6.7",
"__meta_kubernetes_pod_ip": "192.168.15.1",
"__meta_kubernetes_pod_name": "test-pod",
"__meta_kubernetes_pod_node_name": "test-node",
"__meta_kubernetes_pod_phase": "abc",
"__meta_kubernetes_pod_ready": "unknown",
"__meta_kubernetes_pod_uid": "pod-uid",
"__meta_kubernetes_service_cluster_ip": "1.2.3.4",
"__meta_kubernetes_service_name": "test-svc",
"__meta_kubernetes_service_type": "service-type",
}),
})
})
t.Run("1 port from endpoint", func(t *testing.T) {
f(t, testArgs{
containerPorts: map[string][]ContainerPort{"metrics": {{
Name: "web",
ContainerPort: 8428,
Protocol: "sdc",
}}},
endpointPorts: []EndpointPort{
{
Name: "web",
Port: 8428,
Protocol: "xabc",
},
},
}, []*promutils.Labels{
promutils.NewLabelsFromMap(map[string]string{
"__address__": "10.13.15.15:8428",
"__meta_kubernetes_endpointslice_address_target_kind": "Pod",
"__meta_kubernetes_endpointslice_address_target_name": "test-pod",
"__meta_kubernetes_endpointslice_address_type": "foobar",
"__meta_kubernetes_endpointslice_endpoint_conditions_ready": "true",
"__meta_kubernetes_endpointslice_endpoint_hostname": "foo.bar",
"__meta_kubernetes_endpointslice_endpoint_topology_present_x": "true",
"__meta_kubernetes_endpointslice_endpoint_topology_x": "y",
"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name": "test-svc",
"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name": "true",
"__meta_kubernetes_endpointslice_name": "test-eps",
"__meta_kubernetes_endpointslice_port": "8428",
"__meta_kubernetes_endpointslice_port_name": "web",
"__meta_kubernetes_endpointslice_port_protocol": "xabc",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_node_label_node_label": "xyz",
"__meta_kubernetes_node_labelpresent_node_label": "true",
"__meta_kubernetes_node_name": "test-node",
"__meta_kubernetes_pod_container_image": "test-image",
"__meta_kubernetes_pod_container_name": "metrics",
"__meta_kubernetes_pod_container_port_name": "web",
"__meta_kubernetes_pod_container_port_number": "8428",
"__meta_kubernetes_pod_container_port_protocol": "sdc",
"__meta_kubernetes_pod_host_ip": "4.5.6.7",
"__meta_kubernetes_pod_ip": "192.168.15.1",
"__meta_kubernetes_pod_name": "test-pod",
"__meta_kubernetes_pod_node_name": "test-node",
"__meta_kubernetes_pod_phase": "abc",
"__meta_kubernetes_pod_ready": "unknown",
"__meta_kubernetes_pod_uid": "pod-uid",
"__meta_kubernetes_service_cluster_ip": "1.2.3.4",
"__meta_kubernetes_service_name": "test-svc",
"__meta_kubernetes_service_type": "service-type",
}),
})
})
}
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