dc42d25f4a
This feature is no longer useful pods don't sync as often. For batch creation/deletions/syncs, the cache will be up-to-date for most pods since it will be updated frequently. For other cases, continue updating for two more seconds don't usually help, as temporal locality doesn't hold across pod syncs.
89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 container
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import (
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"reflect"
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"testing"
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"time"
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)
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// testRunTimeCache embeds runtimeCache with some additional methods for
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// testing.
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type testRuntimeCache struct {
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runtimeCache
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}
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func (r *testRuntimeCache) updateCacheWithLock() error {
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r.Lock()
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defer r.Unlock()
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return r.updateCache()
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}
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func (r *testRuntimeCache) getCachedPods() []*Pod {
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r.Lock()
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defer r.Unlock()
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return r.pods
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}
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func newTestRuntimeCache(getter podsGetter) *testRuntimeCache {
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c, _ := NewRuntimeCache(getter)
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return &testRuntimeCache{*c.(*runtimeCache)}
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}
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func TestGetPods(t *testing.T) {
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runtime := &FakeRuntime{}
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expected := []*Pod{{ID: "1111"}, {ID: "2222"}, {ID: "3333"}}
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runtime.PodList = expected
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cache := newTestRuntimeCache(runtime)
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actual, err := cache.GetPods()
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if err != nil {
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t.Errorf("unexpected error %v", err)
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}
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if !reflect.DeepEqual(expected, actual) {
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t.Errorf("expected %#v, got %#v", expected, actual)
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}
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}
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func TestForceUpdateIfOlder(t *testing.T) {
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runtime := &FakeRuntime{}
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cache := newTestRuntimeCache(runtime)
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// Cache old pods.
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oldpods := []*Pod{{ID: "1111"}}
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runtime.PodList = oldpods
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cache.updateCacheWithLock()
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// Update the runtime to new pods.
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newpods := []*Pod{{ID: "1111"}, {ID: "2222"}, {ID: "3333"}}
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runtime.PodList = newpods
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// An older timestamp should not force an update.
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cache.ForceUpdateIfOlder(time.Now().Add(-20 * time.Minute))
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actual := cache.getCachedPods()
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if !reflect.DeepEqual(oldpods, actual) {
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t.Errorf("expected %#v, got %#v", oldpods, actual)
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}
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// A newer timestamp should force an update.
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cache.ForceUpdateIfOlder(time.Now().Add(20 * time.Second))
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actual = cache.getCachedPods()
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if !reflect.DeepEqual(newpods, actual) {
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t.Errorf("expected %#v, got %#v", newpods, actual)
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}
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}
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