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87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
/*
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Copyright 2016 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 e2e_node
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import (
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"os/exec"
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"time"
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"github.com/golang/glog"
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"k8s.io/kubernetes/test/e2e/framework"
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)
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const (
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// Number of attempts to pull an image.
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maxImagePullRetries = 5
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// Sleep duration between image pull retry attempts.
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imagePullRetryDelay = time.Second
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busyBoxImage = iota
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hostExecImage
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netExecImage
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nginxImage
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pauseImage
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// Images just used for explicitly testing pulling of images
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pullTestAlpine
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pullTestAlpineWithBash
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pullTestAuthenticatedAlpine
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pullTestExecHealthz
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)
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var ImageRegistry = map[int]string{
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busyBoxImage: "gcr.io/google_containers/busybox:1.24",
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hostExecImage: "gcr.io/google_containers/hostexec:1.2",
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netExecImage: "gcr.io/google_containers/netexec:1.4",
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nginxImage: "gcr.io/google_containers/nginx-slim:0.7",
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pauseImage: framework.GetPauseImageNameForHostArch(),
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}
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// These are used by tests that explicitly test the ability to pull images
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var NoPullImageRegistry = map[int]string{
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pullTestExecHealthz: "gcr.io/google_containers/exechealthz:1.0",
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pullTestAlpine: "alpine:3.1",
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pullTestAlpineWithBash: "gcr.io/google_containers/alpine-with-bash:1.0",
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pullTestAuthenticatedAlpine: "gcr.io/authenticated-image-pulling/alpine:3.1",
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}
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// Pre-fetch all images tests depend on so that we don't fail in an actual test
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func PrePullAllImages() error {
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for _, image := range ImageRegistry {
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var (
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err error
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output []byte
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)
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for i := 0; i < maxImagePullRetries; i++ {
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if i > 0 {
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time.Sleep(imagePullRetryDelay)
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}
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if output, err = exec.Command("docker", "pull", image).CombinedOutput(); err == nil {
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break
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}
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glog.Warningf("Failed to pull %s, retrying in %s (%d of %d): %v",
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image, imagePullRetryDelay.String(), i+1, maxImagePullRetries, err)
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}
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if err != nil {
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glog.Warningf("Could not pre-pull image %s %v output: %s", image, err, output)
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return err
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}
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}
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return nil
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}
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