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release_differ.go
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release_differ.go
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package rlsdiff
import (
"fmt"
"hash"
"hash/fnv"
"strings"
legacyRelease "helm.sh/helm/v3/pkg/release"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"github.com/werf/nelm/pkg/rls"
)
func ReleaseUpToDate(oldRel, newRel *rls.Release) (bool, error) {
if oldRel.Status() != legacyRelease.StatusDeployed ||
oldRel.Notes() != newRel.Notes() {
return false, nil
}
oldHookResourcesHash := fnv.New32a()
for _, oldHook := range oldRel.HookResources() {
unstruct := cleanUnstruct(oldHook.Unstructured())
if err := writeUnstructHash(unstruct, oldHookResourcesHash); err != nil {
return false, fmt.Errorf("write old hook resource %q hash: %w", oldHook.ResourceID.HumanID(), err)
}
}
newHookResourcesHash := fnv.New32a()
for _, newHook := range newRel.HookResources() {
unstruct := cleanUnstruct(newHook.Unstructured())
if err := writeUnstructHash(unstruct, newHookResourcesHash); err != nil {
return false, fmt.Errorf("write new hook resource %q hash: %w", newHook.ResourceID.HumanID(), err)
}
}
if oldHookResourcesHash.Sum32() != newHookResourcesHash.Sum32() {
return false, nil
}
oldGeneralResourcesHash := fnv.New32a()
for _, oldRes := range oldRel.GeneralResources() {
unstruct := cleanUnstruct(oldRes.Unstructured())
if err := writeUnstructHash(unstruct, oldGeneralResourcesHash); err != nil {
return false, fmt.Errorf("write old general resource %q hash: %w", oldRes.ResourceID.HumanID(), err)
}
}
newGeneralResourcesHash := fnv.New32a()
for _, newRes := range newRel.GeneralResources() {
unstruct := cleanUnstruct(newRes.Unstructured())
if err := writeUnstructHash(unstruct, newGeneralResourcesHash); err != nil {
return false, fmt.Errorf("write new general resource %q hash: %w", newRes.ResourceID.HumanID(), err)
}
}
if oldGeneralResourcesHash.Sum32() != newGeneralResourcesHash.Sum32() {
return false, nil
}
return true, nil
}
func writeUnstructHash(unstruct *unstructured.Unstructured, hash hash.Hash32) error {
if b, err := unstruct.MarshalJSON(); err != nil {
return fmt.Errorf("unmarshal resource: %w", err)
} else {
hash.Write(b)
}
return nil
}
func cleanUnstruct(unstruct *unstructured.Unstructured) *unstructured.Unstructured {
unstr := unstruct.DeepCopy()
if annos := unstr.GetAnnotations(); len(annos) > 0 {
for key := range annos {
if strings.HasPrefix(key, "project.werf.io/") ||
strings.Contains(key, "ci.werf.io/") ||
key == "werf.io/version" ||
key == "werf.io/release-channel" {
delete(annos, key)
}
}
unstr.SetAnnotations(annos)
}
return unstr
}