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sync_publish.go
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sync_publish.go
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package main
import (
"context"
"fmt"
"reflect"
"sort"
"strings"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/klog"
imagev1 "github.com/openshift/api/image/v1"
releasecontroller "github.com/openshift/release-controller/pkg/release-controller"
)
func (c *Controller) ensureTagPointsToRelease(release *releasecontroller.Release, to, from string) error {
if to == from {
return nil
}
fromTag := releasecontroller.FindTagReference(release.Target, from)
toTag := releasecontroller.FindTagReference(release.Target, to)
if fromTag == nil {
// tag was deleted
return nil
}
if toTag != nil {
if toTag.From != nil && toTag.From.Kind == "ImageStreamTag" && toTag.From.Name == from && toTag.From.Namespace == "" {
// already set to the correct location
return nil
}
}
target := release.Target.DeepCopy()
toTag = releasecontroller.FindTagReference(target, to)
if toTag == nil {
target.Spec.Tags = append(target.Spec.Tags, imagev1.TagReference{
Name: to,
})
toTag = &target.Spec.Tags[len(target.Spec.Tags)-1]
}
toTag.From = &corev1.ObjectReference{Kind: "ImageStreamTag", Name: from}
toTag.ImportPolicy = imagev1.TagImportPolicy{}
is, err := c.imageClient.ImageStreams(target.Namespace).Update(context.TODO(), target, metav1.UpdateOptions{})
if errors.IsNotFound(err) {
return nil
}
if err != nil {
return err
}
klog.V(2).Infof("Updated image stream tag %s/%s:%s to point to %s", release.Target.Namespace, release.Target.Name, to, from)
updateReleaseTarget(release, is)
return nil
}
func (c *Controller) ensureImageStreamMatchesRelease(release *releasecontroller.Release, toNamespace, toName, from string, tags, excludeTags []string) error {
if len(tags) == 0 {
klog.V(4).Infof("Ensure image stream %s/%s has contents of %s", toNamespace, toName, from)
} else {
klog.V(4).Infof("Ensure image stream %s/%s has tags from %s: %s", toNamespace, toName, from, strings.Join(tags, ", "))
}
if toNamespace == release.Source.Namespace && toName == release.Source.Name {
return nil
}
fromTag := releasecontroller.FindTagReference(release.Target, from)
if fromTag == nil {
// tag was deleted
return nil
}
mirror, err := releasecontroller.GetMirror(release, from, c.releaseLister)
if err != nil {
klog.V(2).Infof("Error getting release mirror image stream: %v", err)
return nil
}
lister := c.publishLister.ImageStreams(toNamespace)
if lister == nil {
return fmt.Errorf("cannot publish to namespace %s, namespace was not registered for either release or publish", toNamespace)
}
target, err := lister.Get(toName)
if errors.IsNotFound(err) {
// TODO: create it?
klog.V(2).Infof("Target image stream doesn't exist yet: %v", err)
return nil
}
if err != nil {
// TODO
klog.V(2).Infof("Error getting publish image stream: %v", err)
return nil
}
if len(tags) == 0 {
set := fmt.Sprintf("release.openshift.io/source-%s", release.Config.Name)
if value, ok := target.Annotations[set]; ok && value == from {
klog.V(2).Infof("Published image stream %s/%s is up to date", toNamespace, toName)
return nil
}
excluded := sets.NewString(excludeTags...)
processed := sets.NewString()
finalRefs := make([]imagev1.TagReference, 0, len(mirror.Spec.Tags))
for _, tag := range mirror.Spec.Tags {
if processed.Has(tag.Name) || excluded.Has(tag.Name) {
continue
}
processed.Insert(tag.Name)
finalRefs = append(finalRefs, tag)
}
for _, tag := range target.Spec.Tags {
if processed.Has(tag.Name) {
continue
}
finalRefs = append(finalRefs, tag)
}
sort.Slice(finalRefs, func(i, j int) bool {
return finalRefs[i].Name < finalRefs[j].Name
})
target = target.DeepCopy()
target.Spec.Tags = finalRefs
if target.Annotations == nil {
target.Annotations = make(map[string]string)
}
target.Annotations[set] = from
} else {
var copied *imagev1.ImageStream
processed := sets.NewString(excludeTags...)
for _, tag := range tags {
if processed.Has(tag) {
continue
}
processed.Insert(tag)
sourceTag := releasecontroller.FindTagReference(mirror, tag)
if sourceTag == nil {
klog.Warningf("The tag %s should be mirrored from %s to %s, but is not in the source tags", tag, release.Config.Name, toName)
continue
}
targetTag := releasecontroller.FindTagReference(target, tag)
if targetTag != nil && reflect.DeepEqual(targetTag.From, sourceTag.From) {
// tag is identical
continue
}
if copied == nil {
copied = target.DeepCopy()
}
if targetTag == nil {
copied.Spec.Tags = append(copied.Spec.Tags, *sourceTag)
} else {
targetTag = releasecontroller.FindTagReference(copied, tag)
*targetTag = *sourceTag
}
}
if copied == nil {
return nil
}
target = copied
}
_, err = c.imageClient.ImageStreams(target.Namespace).Update(context.TODO(), target, metav1.UpdateOptions{})
if errors.IsNotFound(err) {
return nil
}
if err != nil {
return err
}
if len(tags) == 0 {
klog.V(2).Infof("Updated image stream %s/%s to point to contents of %s", toNamespace, toName, from)
} else {
klog.V(2).Infof("Updated image stream %s/%s with tags from %s: %s", toNamespace, toName, from, strings.Join(tags, ", "))
}
return nil
}