141 lines
4.6 KiB
Go
141 lines
4.6 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 libdocker
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import (
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"fmt"
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"hash/adler32"
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"testing"
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dockertypes "github.com/docker/engine-api/types"
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"github.com/stretchr/testify/assert"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/api/v1"
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hashutil "k8s.io/kubernetes/pkg/util/hash"
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)
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func verifyCalls(t *testing.T, fakeDocker *FakeDockerClient, calls []string) {
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assert.New(t).NoError(fakeDocker.AssertCalls(calls))
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}
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func verifyStringArrayEquals(t *testing.T, actual, expected []string) {
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invalid := len(actual) != len(expected)
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if !invalid {
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for ix, value := range actual {
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if expected[ix] != value {
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invalid = true
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}
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}
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}
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if invalid {
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t.Errorf("Expected: %#v, Actual: %#v", expected, actual)
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}
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}
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func findPodContainer(dockerContainers []*dockertypes.Container, podFullName string, uid types.UID, containerName string) (*dockertypes.Container, bool, uint64) {
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for _, dockerContainer := range dockerContainers {
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if len(dockerContainer.Names) == 0 {
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continue
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}
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dockerName, hash, err := ParseDockerName(dockerContainer.Names[0])
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if err != nil {
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continue
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}
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if dockerName.PodFullName == podFullName &&
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(uid == "" || dockerName.PodUID == uid) &&
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dockerName.ContainerName == containerName {
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return dockerContainer, true, hash
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}
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}
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return nil, false, 0
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}
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func TestGetContainerID(t *testing.T) {
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fakeDocker := NewFakeDockerClient()
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fakeDocker.SetFakeRunningContainers([]*FakeContainer{
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{
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ID: "foobar",
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Name: "/k8s_foo_qux_ns_1234_42",
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},
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{
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ID: "barbar",
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Name: "/k8s_bar_qux_ns_2565_42",
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},
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})
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dockerContainers, err := GetKubeletDockerContainers(fakeDocker, false)
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if err != nil {
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t.Errorf("Expected no error, Got %#v", err)
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}
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if len(dockerContainers) != 2 {
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t.Errorf("Expected %#v, Got %#v", fakeDocker.RunningContainerList, dockerContainers)
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}
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verifyCalls(t, fakeDocker, []string{"list"})
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dockerContainer, found, _ := findPodContainer(dockerContainers, "qux_ns", "", "foo")
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if dockerContainer == nil || !found {
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t.Errorf("Failed to find container %#v", dockerContainer)
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}
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fakeDocker.ClearCalls()
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dockerContainer, found, _ = findPodContainer(dockerContainers, "foobar", "", "foo")
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verifyCalls(t, fakeDocker, []string{})
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if dockerContainer != nil || found {
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t.Errorf("Should not have found container %#v", dockerContainer)
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}
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}
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func verifyPackUnpack(t *testing.T, podNamespace, podUID, podName, containerName string) {
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container := &v1.Container{Name: containerName}
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hasher := adler32.New()
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hashutil.DeepHashObject(hasher, *container)
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computedHash := uint64(hasher.Sum32())
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podFullName := fmt.Sprintf("%s_%s", podName, podNamespace)
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_, name, _ := BuildDockerName(KubeletContainerName{podFullName, types.UID(podUID), container.Name}, container)
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returned, hash, err := ParseDockerName(name)
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if err != nil {
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t.Errorf("Failed to parse Docker container name %q: %v", name, err)
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}
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if podFullName != returned.PodFullName || podUID != string(returned.PodUID) || containerName != returned.ContainerName || computedHash != hash {
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t.Errorf("For (%s, %s, %s, %d), unpacked (%s, %s, %s, %d)", podFullName, podUID, containerName, computedHash, returned.PodFullName, returned.PodUID, returned.ContainerName, hash)
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}
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}
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func TestContainerNaming(t *testing.T) {
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podUID := "12345678"
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verifyPackUnpack(t, "file", podUID, "name", "container")
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verifyPackUnpack(t, "file", podUID, "name-with-dashes", "container")
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// UID is same as pod name
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verifyPackUnpack(t, "file", podUID, podUID, "container")
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// No Container name
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verifyPackUnpack(t, "other", podUID, "name", "")
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container := &v1.Container{Name: "container"}
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podName := "foo"
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podNamespace := "test"
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name := fmt.Sprintf("k8s_%s_%s_%s_%s_42", container.Name, podName, podNamespace, podUID)
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podFullName := fmt.Sprintf("%s_%s", podName, podNamespace)
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returned, hash, err := ParseDockerName(name)
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if err != nil {
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t.Errorf("Failed to parse Docker container name %q: %v", name, err)
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}
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if returned.PodFullName != podFullName || string(returned.PodUID) != podUID || returned.ContainerName != container.Name || hash != 0 {
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t.Errorf("unexpected parse: %s %s %s %d", returned.PodFullName, returned.PodUID, returned.ContainerName, hash)
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}
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}
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