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prometheus/discovery/kubernetes/pod_test.go

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// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package kubernetes
import (
"testing"
"github.com/prometheus/common/log"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/config"
"k8s.io/client-go/1.5/pkg/api/v1"
"k8s.io/client-go/1.5/tools/cache"
)
func podStoreKeyFunc(obj interface{}) (string, error) {
return obj.(*v1.Pod).ObjectMeta.Name, nil
}
func newFakePodInformer() *fakeInformer {
return newFakeInformer(podStoreKeyFunc)
}
func makeTestPodDiscovery() (*Pod, *fakeInformer) {
i := newFakePodInformer()
return NewPod(log.Base(), i), i
}
func makeMultiPortPod() *v1.Pod {
return &v1.Pod{
ObjectMeta: v1.ObjectMeta{
Name: "testpod",
Namespace: "default",
Labels: map[string]string{"testlabel": "testvalue"},
Annotations: map[string]string{"testannotation": "testannotationvalue"},
},
Spec: v1.PodSpec{
NodeName: "testnode",
Containers: []v1.Container{
v1.Container{
Name: "testcontainer0",
Ports: []v1.ContainerPort{
v1.ContainerPort{
Name: "testport0",
Protocol: v1.ProtocolTCP,
ContainerPort: int32(9000),
},
v1.ContainerPort{
Name: "testport1",
Protocol: v1.ProtocolUDP,
ContainerPort: int32(9001),
},
},
},
v1.Container{
Name: "testcontainer1",
},
},
},
Status: v1.PodStatus{
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
Conditions: []v1.PodCondition{
v1.PodCondition{
Type: v1.PodReady,
Status: v1.ConditionTrue,
},
},
},
}
}
func makePod() *v1.Pod {
return &v1.Pod{
ObjectMeta: v1.ObjectMeta{
Name: "testpod",
Namespace: "default",
},
Spec: v1.PodSpec{
NodeName: "testnode",
Containers: []v1.Container{
v1.Container{
Name: "testcontainer",
Ports: []v1.ContainerPort{
v1.ContainerPort{
Name: "testport",
Protocol: v1.ProtocolTCP,
ContainerPort: int32(9000),
},
},
},
},
},
Status: v1.PodStatus{
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
Conditions: []v1.PodCondition{
v1.PodCondition{
Type: v1.PodReady,
Status: v1.ConditionTrue,
},
},
},
}
}
func TestPodDiscoveryInitial(t *testing.T) {
n, i := makeTestPodDiscovery()
i.GetStore().Add(makeMultiPortPod())
k8sDiscoveryTest{
discovery: n,
expectedInitial: []*config.TargetGroup{
&config.TargetGroup{
Targets: []model.LabelSet{
model.LabelSet{
"__address__": "1.2.3.4:9000",
"__meta_kubernetes_pod_container_name": "testcontainer0",
"__meta_kubernetes_pod_container_port_name": "testport0",
"__meta_kubernetes_pod_container_port_number": "9000",
"__meta_kubernetes_pod_container_port_protocol": "TCP",
},
model.LabelSet{
"__address__": "1.2.3.4:9001",
"__meta_kubernetes_pod_container_name": "testcontainer0",
"__meta_kubernetes_pod_container_port_name": "testport1",
"__meta_kubernetes_pod_container_port_number": "9001",
"__meta_kubernetes_pod_container_port_protocol": "UDP",
},
model.LabelSet{
"__address__": "1.2.3.4",
"__meta_kubernetes_pod_container_name": "testcontainer1",
},
},
Labels: model.LabelSet{
"__meta_kubernetes_pod_name": "testpod",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_pod_label_testlabel": "testvalue",
"__meta_kubernetes_pod_annotation_testannotation": "testannotationvalue",
"__meta_kubernetes_pod_node_name": "testnode",
"__meta_kubernetes_pod_ip": "1.2.3.4",
"__meta_kubernetes_pod_host_ip": "2.3.4.5",
"__meta_kubernetes_pod_ready": "true",
},
Source: "pod/default/testpod",
},
},
}.Run(t)
}
func TestPodDiscoveryAdd(t *testing.T) {
n, i := makeTestPodDiscovery()
k8sDiscoveryTest{
discovery: n,
afterStart: func() { go func() { i.Add(makePod()) }() },
expectedRes: []*config.TargetGroup{
&config.TargetGroup{
Targets: []model.LabelSet{
model.LabelSet{
"__address__": "1.2.3.4:9000",
"__meta_kubernetes_pod_container_name": "testcontainer",
"__meta_kubernetes_pod_container_port_name": "testport",
"__meta_kubernetes_pod_container_port_number": "9000",
"__meta_kubernetes_pod_container_port_protocol": "TCP",
},
},
Labels: model.LabelSet{
"__meta_kubernetes_pod_name": "testpod",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_pod_node_name": "testnode",
"__meta_kubernetes_pod_ip": "1.2.3.4",
"__meta_kubernetes_pod_host_ip": "2.3.4.5",
"__meta_kubernetes_pod_ready": "true",
},
Source: "pod/default/testpod",
},
},
}.Run(t)
}
func TestPodDiscoveryDelete(t *testing.T) {
n, i := makeTestPodDiscovery()
i.GetStore().Add(makePod())
k8sDiscoveryTest{
discovery: n,
afterStart: func() { go func() { i.Delete(makePod()) }() },
expectedInitial: []*config.TargetGroup{
&config.TargetGroup{
Targets: []model.LabelSet{
model.LabelSet{
"__address__": "1.2.3.4:9000",
"__meta_kubernetes_pod_container_name": "testcontainer",
"__meta_kubernetes_pod_container_port_name": "testport",
"__meta_kubernetes_pod_container_port_number": "9000",
"__meta_kubernetes_pod_container_port_protocol": "TCP",
},
},
Labels: model.LabelSet{
"__meta_kubernetes_pod_name": "testpod",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_pod_node_name": "testnode",
"__meta_kubernetes_pod_ip": "1.2.3.4",
"__meta_kubernetes_pod_host_ip": "2.3.4.5",
"__meta_kubernetes_pod_ready": "true",
},
Source: "pod/default/testpod",
},
},
expectedRes: []*config.TargetGroup{
&config.TargetGroup{
Source: "pod/default/testpod",
},
},
}.Run(t)
}
func TestPodDiscoveryDeleteUnknownCacheState(t *testing.T) {
n, i := makeTestPodDiscovery()
i.GetStore().Add(makePod())
k8sDiscoveryTest{
discovery: n,
afterStart: func() { go func() { i.Delete(cache.DeletedFinalStateUnknown{Obj: makePod()}) }() },
expectedInitial: []*config.TargetGroup{
&config.TargetGroup{
Targets: []model.LabelSet{
model.LabelSet{
"__address__": "1.2.3.4:9000",
"__meta_kubernetes_pod_container_name": "testcontainer",
"__meta_kubernetes_pod_container_port_name": "testport",
"__meta_kubernetes_pod_container_port_number": "9000",
"__meta_kubernetes_pod_container_port_protocol": "TCP",
},
},
Labels: model.LabelSet{
"__meta_kubernetes_pod_name": "testpod",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_pod_node_name": "testnode",
"__meta_kubernetes_pod_ip": "1.2.3.4",
"__meta_kubernetes_pod_host_ip": "2.3.4.5",
"__meta_kubernetes_pod_ready": "true",
},
Source: "pod/default/testpod",
},
},
expectedRes: []*config.TargetGroup{
&config.TargetGroup{
Source: "pod/default/testpod",
},
},
}.Run(t)
}
func TestPodDiscoveryUpdate(t *testing.T) {
n, i := makeTestPodDiscovery()
i.GetStore().Add(&v1.Pod{
ObjectMeta: v1.ObjectMeta{
Name: "testpod",
Namespace: "default",
},
Spec: v1.PodSpec{
NodeName: "testnode",
Containers: []v1.Container{
v1.Container{
Name: "testcontainer",
Ports: []v1.ContainerPort{
v1.ContainerPort{
Name: "testport",
Protocol: v1.ProtocolTCP,
ContainerPort: int32(9000),
},
},
},
},
},
Status: v1.PodStatus{
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
},
})
k8sDiscoveryTest{
discovery: n,
afterStart: func() { go func() { i.Update(makePod()) }() },
expectedInitial: []*config.TargetGroup{
&config.TargetGroup{
Targets: []model.LabelSet{
model.LabelSet{
"__address__": "1.2.3.4:9000",
"__meta_kubernetes_pod_container_name": "testcontainer",
"__meta_kubernetes_pod_container_port_name": "testport",
"__meta_kubernetes_pod_container_port_number": "9000",
"__meta_kubernetes_pod_container_port_protocol": "TCP",
},
},
Labels: model.LabelSet{
"__meta_kubernetes_pod_name": "testpod",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_pod_node_name": "testnode",
"__meta_kubernetes_pod_ip": "1.2.3.4",
"__meta_kubernetes_pod_host_ip": "2.3.4.5",
"__meta_kubernetes_pod_ready": "unknown",
},
Source: "pod/default/testpod",
},
},
expectedRes: []*config.TargetGroup{
&config.TargetGroup{
Targets: []model.LabelSet{
model.LabelSet{
"__address__": "1.2.3.4:9000",
"__meta_kubernetes_pod_container_name": "testcontainer",
"__meta_kubernetes_pod_container_port_name": "testport",
"__meta_kubernetes_pod_container_port_number": "9000",
"__meta_kubernetes_pod_container_port_protocol": "TCP",
},
},
Labels: model.LabelSet{
"__meta_kubernetes_pod_name": "testpod",
"__meta_kubernetes_namespace": "default",
"__meta_kubernetes_pod_node_name": "testnode",
"__meta_kubernetes_pod_ip": "1.2.3.4",
"__meta_kubernetes_pod_host_ip": "2.3.4.5",
"__meta_kubernetes_pod_ready": "true",
},
Source: "pod/default/testpod",
},
},
}.Run(t)
}
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