mirror of https://github.com/kubernetes/kops.git
101 lines
2.6 KiB
Go
101 lines
2.6 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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"k8s.io/kops/upup/pkg/fi/nodeup/local"
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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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Runtime string
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}
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var _ fi.Task = &PullImageTask{}
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var _ fi.HasDependencies = &PullImageTask{}
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func (t *PullImageTask) GetDependencies(tasks map[string]fi.Task) []fi.Task {
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// LoadImageTask depends on the docker service to ensure we
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// sideload images after docker is completely updated and
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// configured.
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var deps []fi.Task
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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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if svc, ok := v.(*Service); ok && svc.Name == dockerService {
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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 (e *PullImageTask) Find(c *fi.Context) (*PullImageTask, error) {
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klog.Warningf("LoadImageTask checking if image present not yet implemented")
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return nil, nil
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}
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func (e *PullImageTask) Run(c *fi.Context) error {
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return fi.DefaultDeltaRunMethod(e, c)
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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 (*PullImageTask) CheckChanges(a, e, changes *PullImageTask) error {
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return nil
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}
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func (*PullImageTask) RenderLocal(t *local.LocalTarget, a, e, changes *PullImageTask) error {
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runtime := e.Runtime
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if runtime != "docker" && runtime != "containerd" {
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return fmt.Errorf("no runtime specified")
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}
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// Load the container image
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var args []string
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switch runtime {
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case "docker":
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args = []string{"docker", "pull", e.Name}
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case "containerd":
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args = []string{"ctr", "--namespace", "k8s.io", "images", "pull", e.Name}
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default:
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return fmt.Errorf("unknown container runtime: %s", runtime)
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}
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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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