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390 lines
10 KiB
390 lines
10 KiB
// Copyright 2016 The Prometheus 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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package kubernetes
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import (
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"fmt"
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"testing"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/discovery/targetgroup"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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)
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func makeOptionalBool(v bool) *bool {
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return &v
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}
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func makeMultiPortPods() *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "testpod",
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Namespace: "default",
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Labels: map[string]string{"test/label": "testvalue"},
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Annotations: map[string]string{"test/annotation": "testannotationvalue"},
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UID: types.UID("abc123"),
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OwnerReferences: []metav1.OwnerReference{
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{
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Kind: "testcontrollerkind",
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Name: "testcontrollername",
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Controller: makeOptionalBool(true),
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},
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},
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},
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Spec: v1.PodSpec{
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NodeName: "testnode",
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Containers: []v1.Container{
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{
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Name: "testcontainer0",
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Ports: []v1.ContainerPort{
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{
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Name: "testport0",
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Protocol: v1.ProtocolTCP,
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ContainerPort: int32(9000),
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},
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{
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Name: "testport1",
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Protocol: v1.ProtocolUDP,
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ContainerPort: int32(9001),
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},
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},
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},
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{
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Name: "testcontainer1",
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},
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},
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},
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Status: v1.PodStatus{
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PodIP: "1.2.3.4",
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HostIP: "2.3.4.5",
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Phase: "Running",
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Conditions: []v1.PodCondition{
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{
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Type: v1.PodReady,
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Status: v1.ConditionTrue,
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},
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},
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},
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}
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}
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func makePods() *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "testpod",
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Namespace: "default",
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UID: types.UID("abc123"),
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},
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Spec: v1.PodSpec{
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NodeName: "testnode",
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Containers: []v1.Container{
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{
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Name: "testcontainer",
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Ports: []v1.ContainerPort{
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{
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Name: "testport",
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Protocol: v1.ProtocolTCP,
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ContainerPort: int32(9000),
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},
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},
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},
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},
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},
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Status: v1.PodStatus{
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PodIP: "1.2.3.4",
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HostIP: "2.3.4.5",
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Phase: "Running",
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Conditions: []v1.PodCondition{
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{
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Type: v1.PodReady,
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Status: v1.ConditionTrue,
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},
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},
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},
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}
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}
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func makeInitContainerPods() *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "testpod",
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Namespace: "default",
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UID: types.UID("abc123"),
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},
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Spec: v1.PodSpec{
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NodeName: "testnode",
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Containers: []v1.Container{
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{
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Name: "testcontainer",
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Ports: []v1.ContainerPort{
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{
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Name: "testport",
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Protocol: v1.ProtocolTCP,
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ContainerPort: int32(9000),
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},
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},
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},
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},
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InitContainers: []v1.Container{
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{
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Name: "initcontainer",
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},
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},
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},
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Status: v1.PodStatus{
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PodIP: "1.2.3.4",
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HostIP: "2.3.4.5",
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Phase: "Pending",
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Conditions: []v1.PodCondition{
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{
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Type: v1.PodReady,
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Status: v1.ConditionFalse,
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},
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},
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},
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}
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}
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func expectedPodTargetGroups(ns string) map[string]*targetgroup.Group {
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key := fmt.Sprintf("pod/%s/testpod", ns)
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return map[string]*targetgroup.Group{
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key: {
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Targets: []model.LabelSet{
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{
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"__address__": "1.2.3.4:9000",
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"__meta_kubernetes_pod_container_name": "testcontainer",
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"__meta_kubernetes_pod_container_port_name": "testport",
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"__meta_kubernetes_pod_container_port_number": "9000",
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"__meta_kubernetes_pod_container_port_protocol": "TCP",
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"__meta_kubernetes_pod_container_init": "false",
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},
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},
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Labels: model.LabelSet{
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"__meta_kubernetes_pod_name": "testpod",
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"__meta_kubernetes_namespace": lv(ns),
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"__meta_kubernetes_pod_node_name": "testnode",
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"__meta_kubernetes_pod_ip": "1.2.3.4",
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"__meta_kubernetes_pod_host_ip": "2.3.4.5",
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"__meta_kubernetes_pod_ready": "true",
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"__meta_kubernetes_pod_phase": "Running",
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"__meta_kubernetes_pod_uid": "abc123",
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},
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Source: key,
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},
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}
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}
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func TestPodDiscoveryBeforeRun(t *testing.T) {
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{})
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k8sDiscoveryTest{
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discovery: n,
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beforeRun: func() {
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obj := makeMultiPortPods()
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c.CoreV1().Pods(obj.Namespace).Create(obj)
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},
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expectedMaxItems: 1,
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expectedRes: map[string]*targetgroup.Group{
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"pod/default/testpod": {
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Targets: []model.LabelSet{
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{
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"__address__": "1.2.3.4:9000",
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"__meta_kubernetes_pod_container_name": "testcontainer0",
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"__meta_kubernetes_pod_container_port_name": "testport0",
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"__meta_kubernetes_pod_container_port_number": "9000",
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"__meta_kubernetes_pod_container_port_protocol": "TCP",
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"__meta_kubernetes_pod_container_init": "false",
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},
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{
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"__address__": "1.2.3.4:9001",
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"__meta_kubernetes_pod_container_name": "testcontainer0",
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"__meta_kubernetes_pod_container_port_name": "testport1",
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"__meta_kubernetes_pod_container_port_number": "9001",
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"__meta_kubernetes_pod_container_port_protocol": "UDP",
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"__meta_kubernetes_pod_container_init": "false",
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},
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{
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"__address__": "1.2.3.4",
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"__meta_kubernetes_pod_container_name": "testcontainer1",
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"__meta_kubernetes_pod_container_init": "false",
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},
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},
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Labels: model.LabelSet{
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"__meta_kubernetes_pod_name": "testpod",
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"__meta_kubernetes_namespace": "default",
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"__meta_kubernetes_pod_label_test_label": "testvalue",
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"__meta_kubernetes_pod_labelpresent_test_label": "true",
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"__meta_kubernetes_pod_annotation_test_annotation": "testannotationvalue",
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"__meta_kubernetes_pod_annotationpresent_test_annotation": "true",
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"__meta_kubernetes_pod_node_name": "testnode",
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"__meta_kubernetes_pod_ip": "1.2.3.4",
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"__meta_kubernetes_pod_host_ip": "2.3.4.5",
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"__meta_kubernetes_pod_ready": "true",
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"__meta_kubernetes_pod_phase": "Running",
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"__meta_kubernetes_pod_uid": "abc123",
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"__meta_kubernetes_pod_controller_kind": "testcontrollerkind",
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"__meta_kubernetes_pod_controller_name": "testcontrollername",
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},
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Source: "pod/default/testpod",
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},
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},
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}.Run(t)
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}
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func TestPodDiscoveryInitContainer(t *testing.T) {
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{})
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ns := "default"
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key := fmt.Sprintf("pod/%s/testpod", ns)
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expected := expectedPodTargetGroups(ns)
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expected[key].Targets = append(expected[key].Targets, model.LabelSet{
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"__address__": "1.2.3.4",
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"__meta_kubernetes_pod_container_name": "initcontainer",
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"__meta_kubernetes_pod_container_init": "true",
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})
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expected[key].Labels["__meta_kubernetes_pod_phase"] = "Pending"
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expected[key].Labels["__meta_kubernetes_pod_ready"] = "false"
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k8sDiscoveryTest{
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discovery: n,
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beforeRun: func() {
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obj := makeInitContainerPods()
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c.CoreV1().Pods(obj.Namespace).Create(obj)
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},
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expectedMaxItems: 1,
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expectedRes: expected,
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}.Run(t)
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}
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func TestPodDiscoveryAdd(t *testing.T) {
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{})
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k8sDiscoveryTest{
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discovery: n,
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afterStart: func() {
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obj := makePods()
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c.CoreV1().Pods(obj.Namespace).Create(obj)
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},
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expectedMaxItems: 1,
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expectedRes: expectedPodTargetGroups("default"),
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}.Run(t)
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}
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func TestPodDiscoveryDelete(t *testing.T) {
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obj := makePods()
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{}, obj)
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k8sDiscoveryTest{
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discovery: n,
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afterStart: func() {
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obj := makePods()
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c.CoreV1().Pods(obj.Namespace).Delete(obj.Name, &metav1.DeleteOptions{})
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},
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expectedMaxItems: 2,
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expectedRes: map[string]*targetgroup.Group{
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"pod/default/testpod": {
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Source: "pod/default/testpod",
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},
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},
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}.Run(t)
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}
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func TestPodDiscoveryUpdate(t *testing.T) {
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obj := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "testpod",
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Namespace: "default",
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UID: "xyz321",
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},
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Spec: v1.PodSpec{
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NodeName: "testnode",
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Containers: []v1.Container{
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{
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Name: "testcontainer",
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Ports: []v1.ContainerPort{
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{
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Name: "testport",
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Protocol: v1.ProtocolTCP,
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ContainerPort: int32(9000),
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},
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},
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},
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},
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},
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Status: v1.PodStatus{
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PodIP: "1.2.3.4",
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HostIP: "2.3.4.5",
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},
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}
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{}, obj)
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k8sDiscoveryTest{
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discovery: n,
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afterStart: func() {
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obj := makePods()
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c.CoreV1().Pods(obj.Namespace).Update(obj)
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},
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expectedMaxItems: 2,
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expectedRes: expectedPodTargetGroups("default"),
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}.Run(t)
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}
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func TestPodDiscoveryUpdateEmptyPodIP(t *testing.T) {
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{})
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initialPod := makePods()
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updatedPod := makePods()
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updatedPod.Status.PodIP = ""
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k8sDiscoveryTest{
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discovery: n,
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beforeRun: func() {
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c.CoreV1().Pods(initialPod.Namespace).Create(initialPod)
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},
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afterStart: func() {
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c.CoreV1().Pods(updatedPod.Namespace).Update(updatedPod)
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},
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expectedMaxItems: 2,
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expectedRes: map[string]*targetgroup.Group{
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"pod/default/testpod": {
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Source: "pod/default/testpod",
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},
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},
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}.Run(t)
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}
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func TestPodDiscoveryNamespaces(t *testing.T) {
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n, c := makeDiscovery(RolePod, NamespaceDiscovery{Names: []string{"ns1", "ns2"}})
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expected := expectedPodTargetGroups("ns1")
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for k, v := range expectedPodTargetGroups("ns2") {
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expected[k] = v
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}
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k8sDiscoveryTest{
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discovery: n,
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beforeRun: func() {
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for _, ns := range []string{"ns1", "ns2"} {
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pod := makePods()
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pod.Namespace = ns
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c.CoreV1().Pods(pod.Namespace).Create(pod)
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}
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},
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expectedMaxItems: 2,
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expectedRes: expected,
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}.Run(t)
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}
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