mirror of
https://github.com/prometheus/prometheus
synced 2024-12-24 23:42:32 +00:00
8ceb8f2ae8
- Do initial listing and syncing to scrape manager, then register event handlers may lost events happening in listing and syncing (if it lasted a long time). We should register event handlers at the very begining, before processing just wait until informers synced (sync in informer will list all objects and call OnUpdate event handler). - Use a queue then we don't block event callbacks and an object will be processed only once if added multiple times before it being processed. - Fix bug in `serviceUpdate` in endpoints.go, we should build endpoints when `exists && err == nil`. Add `^TestEndpointsDiscoveryWithService` tests to test this feature. Testing: - Use `k8s.io/client-go` testing framework and fake implementations which are more robust and reliable for testing. - `Test\w+DiscoveryBeforeRun` are used to test objects created before discoverer runs - `Test\w+DiscoveryAdd\w+` are used to test adding objects - `Test\w+DiscoveryDelete\w+` are used to test deleting objects - `Test\w+DiscoveryUpdate\w+` are used to test updating objects - `TestEndpointsDiscoveryWithService\w+` are used to test endpoints events triggered by services - `cache.DeletedFinalStateUnknown` related stuffs are removed, because we don't care deleted objects in store, we only need its name to send a specical `targetgroup.Group` to scrape manager Signed-off-by: Yecheng Fu <cofyc.jackson@gmail.com>
298 lines
8.1 KiB
Go
298 lines
8.1 KiB
Go
// 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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"testing"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/discovery/targetgroup"
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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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"k8s.io/client-go/pkg/api/v1"
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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{"testlabel": "testvalue"},
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Annotations: map[string]string{"testannotation": "testannotationvalue"},
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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: "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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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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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 TestPodDiscoveryBeforeRun(t *testing.T) {
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n, c, w := 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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w.Pods().Add(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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},
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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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},
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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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},
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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_testlabel": "testvalue",
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"__meta_kubernetes_pod_annotation_testannotation": "testannotationvalue",
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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_uid": "abc123",
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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 TestPodDiscoveryAdd(t *testing.T) {
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n, c, w := 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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w.Pods().Add(obj)
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},
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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": "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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},
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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_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_uid": "abc123",
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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 TestPodDiscoveryDelete(t *testing.T) {
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obj := makePods()
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n, c, w := 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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w.Pods().Delete(obj)
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},
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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, w := 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).Create(obj)
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w.Pods().Modify(obj)
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},
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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": "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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},
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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_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_uid": "abc123",
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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 TestPodDiscoveryUpdateEmptyPodIP(t *testing.T) {
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n, c, w := 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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w.Pods().Add(initialPod)
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},
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afterStart: func() {
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c.CoreV1().Pods(updatedPod.Namespace).Create(updatedPod)
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w.Pods().Modify(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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