mirror of https://github.com/kubernetes/kops.git
106 lines
2.3 KiB
Go
106 lines
2.3 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 fitasks
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import (
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"fmt"
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"os"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/kops/pkg/acls"
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"k8s.io/kops/upup/pkg/fi"
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)
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//go:generate fitask -type=ManagedFile
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type ManagedFile struct {
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Name *string
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Lifecycle *fi.Lifecycle
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Location *string
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Contents *fi.ResourceHolder
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}
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func (e *ManagedFile) Find(c *fi.Context) (*ManagedFile, error) {
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managedFiles := c.ClusterConfigBase
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location := fi.StringValue(e.Location)
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if location == "" {
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return nil, nil
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}
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existingData, err := managedFiles.Join(location).ReadFile()
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if err != nil {
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if os.IsNotExist(err) {
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return nil, nil
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}
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return nil, err
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}
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actual := &ManagedFile{
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Name: e.Name,
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Location: e.Location,
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Contents: fi.WrapResource(fi.NewBytesResource(existingData)),
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}
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// Avoid spurious changes
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actual.Lifecycle = e.Lifecycle
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return actual, nil
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}
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func (e *ManagedFile) Run(c *fi.Context) error {
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return fi.DefaultDeltaRunMethod(e, c)
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}
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func (s *ManagedFile) CheckChanges(a, e, changes *ManagedFile) error {
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if a != nil {
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if changes.Name != nil {
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return fi.CannotChangeField("Name")
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}
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}
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if e.Contents == nil {
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return field.Required(field.NewPath("Contents"), "")
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}
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return nil
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}
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func (_ *ManagedFile) Render(c *fi.Context, a, e, changes *ManagedFile) error {
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location := fi.StringValue(e.Location)
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if location == "" {
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return fi.RequiredField("Location")
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}
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data, err := e.Contents.AsBytes()
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if err != nil {
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return fmt.Errorf("error reading contents of ManagedFile: %v", err)
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}
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p := c.ClusterConfigBase.Join(location)
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acl, err := acls.GetACL(p, c.Cluster)
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if err != nil {
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return err
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}
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err = p.WriteFile(data, acl)
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if err != nil {
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return fmt.Errorf("error creating ManagedFile %q: %v", location, err)
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}
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return nil
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}
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