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476 lines
18 KiB
Go
476 lines
18 KiB
Go
/*
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Copyright 2014 The Kubernetes 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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package factory
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import (
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"net/http"
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"net/http/httptest"
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"reflect"
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/testapi"
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apitesting "k8s.io/kubernetes/pkg/api/testing"
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"k8s.io/kubernetes/pkg/client/cache"
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"k8s.io/kubernetes/pkg/client/restclient"
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client "k8s.io/kubernetes/pkg/client/unversioned"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/types"
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utiltesting "k8s.io/kubernetes/pkg/util/testing"
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"k8s.io/kubernetes/plugin/pkg/scheduler/algorithm"
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schedulerapi "k8s.io/kubernetes/plugin/pkg/scheduler/api"
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latestschedulerapi "k8s.io/kubernetes/plugin/pkg/scheduler/api/latest"
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"k8s.io/kubernetes/plugin/pkg/scheduler/schedulercache"
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)
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func TestCreate(t *testing.T) {
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handler := utiltesting.FakeHandler{
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StatusCode: 500,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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factory := NewConfigFactory(client, api.DefaultSchedulerName, api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
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factory.Create()
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}
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// Test configures a scheduler from a policies defined in a file
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// It combines some configurable predicate/priorities with some pre-defined ones
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func TestCreateFromConfig(t *testing.T) {
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var configData []byte
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var policy schedulerapi.Policy
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handler := utiltesting.FakeHandler{
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StatusCode: 500,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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factory := NewConfigFactory(client, api.DefaultSchedulerName, api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
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// Pre-register some predicate and priority functions
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RegisterFitPredicate("PredicateOne", PredicateOne)
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RegisterFitPredicate("PredicateTwo", PredicateTwo)
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RegisterPriorityFunction("PriorityOne", PriorityOne, 1)
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RegisterPriorityFunction("PriorityTwo", PriorityTwo, 1)
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configData = []byte(`{
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"kind" : "Policy",
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"apiVersion" : "v1",
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"predicates" : [
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{"name" : "TestZoneAffinity", "argument" : {"serviceAffinity" : {"labels" : ["zone"]}}},
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{"name" : "TestRequireZone", "argument" : {"labelsPresence" : {"labels" : ["zone"], "presence" : true}}},
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{"name" : "PredicateOne"},
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{"name" : "PredicateTwo"}
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],
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"priorities" : [
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{"name" : "RackSpread", "weight" : 3, "argument" : {"serviceAntiAffinity" : {"label" : "rack"}}},
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{"name" : "PriorityOne", "weight" : 2},
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{"name" : "PriorityTwo", "weight" : 1} ]
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}`)
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if err := runtime.DecodeInto(latestschedulerapi.Codec, configData, &policy); err != nil {
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t.Errorf("Invalid configuration: %v", err)
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}
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factory.CreateFromConfig(policy)
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}
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func TestCreateFromEmptyConfig(t *testing.T) {
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var configData []byte
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var policy schedulerapi.Policy
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handler := utiltesting.FakeHandler{
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StatusCode: 500,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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factory := NewConfigFactory(client, api.DefaultSchedulerName, api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
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configData = []byte(`{}`)
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if err := runtime.DecodeInto(latestschedulerapi.Codec, configData, &policy); err != nil {
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t.Errorf("Invalid configuration: %v", err)
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}
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factory.CreateFromConfig(policy)
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}
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func PredicateOne(pod *api.Pod, meta interface{}, nodeInfo *schedulercache.NodeInfo) (bool, error) {
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return true, nil
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}
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func PredicateTwo(pod *api.Pod, meta interface{}, nodeInfo *schedulercache.NodeInfo) (bool, error) {
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return true, nil
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}
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func PriorityOne(pod *api.Pod, nodeNameToInfo map[string]*schedulercache.NodeInfo, nodeLister algorithm.NodeLister) (schedulerapi.HostPriorityList, error) {
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return []schedulerapi.HostPriority{}, nil
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}
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func PriorityTwo(pod *api.Pod, nodeNameToInfo map[string]*schedulercache.NodeInfo, nodeLister algorithm.NodeLister) (schedulerapi.HostPriorityList, error) {
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return []schedulerapi.HostPriority{}, nil
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}
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func TestDefaultErrorFunc(t *testing.T) {
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testPod := &api.Pod{
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ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "bar"},
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Spec: apitesting.DeepEqualSafePodSpec(),
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}
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handler := utiltesting.FakeHandler{
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StatusCode: 200,
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ResponseBody: runtime.EncodeOrDie(testapi.Default.Codec(), testPod),
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T: t,
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}
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mux := http.NewServeMux()
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// FakeHandler musn't be sent requests other than the one you want to test.
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mux.Handle(testapi.Default.ResourcePath("pods", "bar", "foo"), &handler)
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server := httptest.NewServer(mux)
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defer server.Close()
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factory := NewConfigFactory(client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}}), api.DefaultSchedulerName, api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
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queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
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podBackoff := podBackoff{
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perPodBackoff: map[types.NamespacedName]*backoffEntry{},
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clock: &fakeClock{},
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defaultDuration: 1 * time.Millisecond,
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maxDuration: 1 * time.Second,
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}
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errFunc := factory.makeDefaultErrorFunc(&podBackoff, queue)
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errFunc(testPod, nil)
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for {
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// This is a terrible way to do this but I plan on replacing this
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// whole error handling system in the future. The test will time
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// out if something doesn't work.
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time.Sleep(10 * time.Millisecond)
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got, exists, _ := queue.Get(testPod)
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if !exists {
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continue
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}
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handler.ValidateRequest(t, testapi.Default.ResourcePath("pods", "bar", "foo"), "GET", nil)
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if e, a := testPod, got; !reflect.DeepEqual(e, a) {
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t.Errorf("Expected %v, got %v", e, a)
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}
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break
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}
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}
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func TestNodeEnumerator(t *testing.T) {
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testList := &api.NodeList{
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Items: []api.Node{
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{ObjectMeta: api.ObjectMeta{Name: "foo"}},
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{ObjectMeta: api.ObjectMeta{Name: "bar"}},
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{ObjectMeta: api.ObjectMeta{Name: "baz"}},
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},
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}
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me := nodeEnumerator{testList}
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if e, a := 3, me.Len(); e != a {
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t.Fatalf("expected %v, got %v", e, a)
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}
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for i := range testList.Items {
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gotObj := me.Get(i)
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if e, a := testList.Items[i].Name, gotObj.(*api.Node).Name; e != a {
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t.Errorf("Expected %v, got %v", e, a)
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}
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if e, a := &testList.Items[i], gotObj; !reflect.DeepEqual(e, a) {
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t.Errorf("Expected %#v, got %v#", e, a)
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}
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}
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}
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type fakeClock struct {
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t time.Time
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}
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func (f *fakeClock) Now() time.Time {
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return f.t
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}
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func TestBind(t *testing.T) {
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table := []struct {
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binding *api.Binding
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}{
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{binding: &api.Binding{
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ObjectMeta: api.ObjectMeta{
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Namespace: api.NamespaceDefault,
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Name: "foo",
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},
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Target: api.ObjectReference{
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Name: "foohost.kubernetes.mydomain.com",
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},
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}},
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}
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for _, item := range table {
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handler := utiltesting.FakeHandler{
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StatusCode: 200,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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b := binder{client}
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if err := b.Bind(item.binding); err != nil {
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t.Errorf("Unexpected error: %v", err)
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continue
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}
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expectedBody := runtime.EncodeOrDie(testapi.Default.Codec(), item.binding)
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handler.ValidateRequest(t, testapi.Default.ResourcePath("bindings", api.NamespaceDefault, ""), "POST", &expectedBody)
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}
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}
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func TestBackoff(t *testing.T) {
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clock := fakeClock{}
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backoff := podBackoff{
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perPodBackoff: map[types.NamespacedName]*backoffEntry{},
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clock: &clock,
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defaultDuration: 1 * time.Second,
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maxDuration: 60 * time.Second,
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}
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tests := []struct {
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podID types.NamespacedName
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expectedDuration time.Duration
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advanceClock time.Duration
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}{
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{
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podID: types.NamespacedName{Namespace: "default", Name: "foo"},
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expectedDuration: 1 * time.Second,
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},
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{
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podID: types.NamespacedName{Namespace: "default", Name: "foo"},
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expectedDuration: 2 * time.Second,
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},
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{
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podID: types.NamespacedName{Namespace: "default", Name: "foo"},
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expectedDuration: 4 * time.Second,
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},
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{
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podID: types.NamespacedName{Namespace: "default", Name: "bar"},
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expectedDuration: 1 * time.Second,
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advanceClock: 120 * time.Second,
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},
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// 'foo' should have been gc'd here.
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{
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podID: types.NamespacedName{Namespace: "default", Name: "foo"},
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expectedDuration: 1 * time.Second,
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},
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}
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for _, test := range tests {
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duration := backoff.getEntry(test.podID).getBackoff(backoff.maxDuration)
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if duration != test.expectedDuration {
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t.Errorf("expected: %s, got %s for %s", test.expectedDuration.String(), duration.String(), test.podID)
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}
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clock.t = clock.t.Add(test.advanceClock)
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backoff.gc()
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}
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fooID := types.NamespacedName{Namespace: "default", Name: "foo"}
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backoff.perPodBackoff[fooID].backoff = 60 * time.Second
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duration := backoff.getEntry(fooID).getBackoff(backoff.maxDuration)
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if duration != 60*time.Second {
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t.Errorf("expected: 60, got %s", duration.String())
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}
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// Verify that we split on namespaces correctly, same name, different namespace
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fooID.Namespace = "other"
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duration = backoff.getEntry(fooID).getBackoff(backoff.maxDuration)
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if duration != 1*time.Second {
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t.Errorf("expected: 1, got %s", duration.String())
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}
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}
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// TestResponsibleForPod tests if a pod with an annotation that should cause it to
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// be picked up by the default scheduler, is in fact picked by the default scheduler
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// Two schedulers are made in the test: one is default scheduler and other scheduler
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// is of name "foo-scheduler". A pod must be picked up by at most one of the two
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// schedulers.
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func TestResponsibleForPod(t *testing.T) {
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handler := utiltesting.FakeHandler{
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StatusCode: 500,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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// factory of "default-scheduler"
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factoryDefaultScheduler := NewConfigFactory(client, api.DefaultSchedulerName, api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
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// factory of "foo-scheduler"
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factoryFooScheduler := NewConfigFactory(client, "foo-scheduler", api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
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// scheduler annotaions to be tested
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schedulerAnnotationFitsDefault := map[string]string{"scheduler.alpha.kubernetes.io/name": "default-scheduler"}
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schedulerAnnotationFitsFoo := map[string]string{"scheduler.alpha.kubernetes.io/name": "foo-scheduler"}
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schedulerAnnotationFitsNone := map[string]string{"scheduler.alpha.kubernetes.io/name": "bar-scheduler"}
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tests := []struct {
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pod *api.Pod
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pickedByDefault bool
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pickedByFoo bool
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}{
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{
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// pod with no annotation "scheduler.alpha.kubernetes.io/name=<scheduler-name>" should be
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// picked by the default scheduler, NOT by the one of name "foo-scheduler"
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pod: &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "bar"}},
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pickedByDefault: true,
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pickedByFoo: false,
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},
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{
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// pod with annotation "scheduler.alpha.kubernetes.io/name=default-scheduler" should be picked
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// by the scheduler of name "default-scheduler", NOT by the one of name "foo-scheduler"
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pod: &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "bar", Annotations: schedulerAnnotationFitsDefault}},
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pickedByDefault: true,
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pickedByFoo: false,
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},
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{
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// pod with annotataion "scheduler.alpha.kubernetes.io/name=foo-scheduler" should be NOT
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// be picked by the scheduler of name "default-scheduler", but by the one of name "foo-scheduler"
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pod: &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "bar", Annotations: schedulerAnnotationFitsFoo}},
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pickedByDefault: false,
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pickedByFoo: true,
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},
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{
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// pod with annotataion "scheduler.alpha.kubernetes.io/name=foo-scheduler" should be NOT
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// be picked by niether the scheduler of name "default-scheduler" nor the one of name "foo-scheduler"
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pod: &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo", Namespace: "bar", Annotations: schedulerAnnotationFitsNone}},
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pickedByDefault: false,
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pickedByFoo: false,
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},
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}
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for _, test := range tests {
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podOfDefault := factoryDefaultScheduler.responsibleForPod(test.pod)
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podOfFoo := factoryFooScheduler.responsibleForPod(test.pod)
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results := []bool{podOfDefault, podOfFoo}
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expected := []bool{test.pickedByDefault, test.pickedByFoo}
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if !reflect.DeepEqual(results, expected) {
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t.Errorf("expected: {%v, %v}, got {%v, %v}", test.pickedByDefault, test.pickedByFoo, podOfDefault, podOfFoo)
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}
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}
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}
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func TestInvalidHardPodAffinitySymmetricWeight(t *testing.T) {
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handler := utiltesting.FakeHandler{
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StatusCode: 500,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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// TODO: Uncomment when fix #19254
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// defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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// factory of "default-scheduler"
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factory := NewConfigFactory(client, api.DefaultSchedulerName, -1, api.DefaultFailureDomains)
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_, err := factory.Create()
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if err == nil {
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t.Errorf("expected err: invalid hardPodAffinitySymmetricWeight, got nothing")
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}
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}
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func TestInvalidFactoryArgs(t *testing.T) {
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handler := utiltesting.FakeHandler{
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StatusCode: 500,
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ResponseBody: "",
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T: t,
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}
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server := httptest.NewServer(&handler)
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defer server.Close()
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client := client.NewOrDie(&restclient.Config{Host: server.URL, ContentConfig: restclient.ContentConfig{GroupVersion: testapi.Default.GroupVersion()}})
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testCases := []struct {
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hardPodAffinitySymmetricWeight int
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failureDomains string
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expectErr string
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}{
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{
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hardPodAffinitySymmetricWeight: -1,
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failureDomains: api.DefaultFailureDomains,
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expectErr: "invalid hardPodAffinitySymmetricWeight: -1, must be in the range 0-100",
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},
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{
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hardPodAffinitySymmetricWeight: 101,
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failureDomains: api.DefaultFailureDomains,
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expectErr: "invalid hardPodAffinitySymmetricWeight: 101, must be in the range 0-100",
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},
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{
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hardPodAffinitySymmetricWeight: 0,
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failureDomains: "INVALID_FAILURE_DOMAINS",
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expectErr: "invalid failure domain: INVALID_FAILURE_DOMAINS",
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},
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}
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for _, test := range testCases {
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factory := NewConfigFactory(client, api.DefaultSchedulerName, test.hardPodAffinitySymmetricWeight, test.failureDomains)
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_, err := factory.Create()
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if err == nil {
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t.Errorf("expected err: %s, got nothing", test.expectErr)
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}
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}
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}
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func TestNodeConditionPredicate(t *testing.T) {
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nodeFunc := getNodeConditionPredicate()
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nodeList := &api.NodeList{
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Items: []api.Node{
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// node1 considered
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{ObjectMeta: api.ObjectMeta{Name: "node1"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeReady, Status: api.ConditionTrue}}}},
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// node2 ignored - node not Ready
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{ObjectMeta: api.ObjectMeta{Name: "node2"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeReady, Status: api.ConditionFalse}}}},
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// node3 ignored - node out of disk
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{ObjectMeta: api.ObjectMeta{Name: "node3"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeOutOfDisk, Status: api.ConditionTrue}}}},
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// node4 considered
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{ObjectMeta: api.ObjectMeta{Name: "node4"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeOutOfDisk, Status: api.ConditionFalse}}}},
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// node5 ignored - node out of disk
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{ObjectMeta: api.ObjectMeta{Name: "node5"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeReady, Status: api.ConditionTrue}, {Type: api.NodeOutOfDisk, Status: api.ConditionTrue}}}},
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// node6 considered
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{ObjectMeta: api.ObjectMeta{Name: "node6"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeReady, Status: api.ConditionTrue}, {Type: api.NodeOutOfDisk, Status: api.ConditionFalse}}}},
|
|
// node7 ignored - node out of disk, node not Ready
|
|
{ObjectMeta: api.ObjectMeta{Name: "node7"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeReady, Status: api.ConditionFalse}, {Type: api.NodeOutOfDisk, Status: api.ConditionTrue}}}},
|
|
// node8 ignored - node not Ready
|
|
{ObjectMeta: api.ObjectMeta{Name: "node8"}, Status: api.NodeStatus{Conditions: []api.NodeCondition{{Type: api.NodeReady, Status: api.ConditionFalse}, {Type: api.NodeOutOfDisk, Status: api.ConditionFalse}}}},
|
|
|
|
// node9 ignored - node unschedulable
|
|
{ObjectMeta: api.ObjectMeta{Name: "node9"}, Spec: api.NodeSpec{Unschedulable: true}},
|
|
// node10 considered
|
|
{ObjectMeta: api.ObjectMeta{Name: "node10"}, Spec: api.NodeSpec{Unschedulable: false}},
|
|
// node11 considered
|
|
{ObjectMeta: api.ObjectMeta{Name: "node11"}},
|
|
},
|
|
}
|
|
|
|
nodeNames := []string{}
|
|
for _, node := range nodeList.Items {
|
|
if nodeFunc(&node) {
|
|
nodeNames = append(nodeNames, node.Name)
|
|
}
|
|
}
|
|
expectedNodes := []string{"node1", "node4", "node6", "node10", "node11"}
|
|
if !reflect.DeepEqual(expectedNodes, nodeNames) {
|
|
t.Errorf("expected: %v, got %v", expectedNodes, nodeNames)
|
|
}
|
|
}
|