mirror of https://github.com/kubernetes/kops.git
72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
/*
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Copyright 2021 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 nodetasks
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import (
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"fmt"
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"os/exec"
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"strings"
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"k8s.io/klog/v2"
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"k8s.io/kops/upup/pkg/fi"
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)
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// PullImageTask is responsible for pulling a docker image
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type PullImageTask struct {
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Name string
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}
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var (
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_ fi.NodeupTask = &PullImageTask{}
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_ fi.NodeupHasDependencies = &PullImageTask{}
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)
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func (t *PullImageTask) GetDependencies(tasks map[string]fi.NodeupTask) []fi.NodeupTask {
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// ImagePullTask depends on the container runtime service to ensure we
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// sideload images after the container runtime is completely updated and
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// configured.
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var deps []fi.NodeupTask
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for _, v := range tasks {
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if svc, ok := v.(*Service); ok && svc.Name == containerdService {
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deps = append(deps, v)
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}
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}
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return deps
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}
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func (t *PullImageTask) GetName() *string {
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if t.Name == "" {
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return nil
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}
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return &t.Name
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}
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func (e *PullImageTask) Run(c *fi.NodeupContext) error {
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// Pull the container image
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args := []string{"ctr", "--namespace", "k8s.io", "images", "pull", e.Name}
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human := strings.Join(args, " ")
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klog.Infof("running command %s", human)
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cmd := exec.Command(args[0], args[1:]...)
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output, err := cmd.CombinedOutput()
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if err != nil {
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return fmt.Errorf("error pulling docker image with '%s': %v: %s", human, err, string(output))
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}
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return nil
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}
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