working commit

vendor/helm.sh/helm/v4/pkg/kube/resource.go

@@ -0,0 +1,92 @@
+/*
+Copyright The Helm Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package kube // import "helm.sh/helm/v4/pkg/kube"
+
+import "k8s.io/cli-runtime/pkg/resource"
+
+// ResourceList provides convenience methods for comparing collections of Infos.
+type ResourceList []*resource.Info
+
+// Append adds an Info to the Result.
+func (r *ResourceList) Append(val *resource.Info) {
+	*r = append(*r, val)
+}
+
+// Visit implements resource.Visitor. The visitor stops if fn returns an error.
+func (r ResourceList) Visit(fn resource.VisitorFunc) error {
+	for _, i := range r {
+		if err := fn(i, nil); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Filter returns a new Result with Infos that satisfy the predicate fn.
+func (r ResourceList) Filter(fn func(*resource.Info) bool) ResourceList {
+	var result ResourceList
+	for _, i := range r {
+		if fn(i) {
+			result.Append(i)
+		}
+	}
+	return result
+}
+
+// Get returns the Info from the result that matches the name and kind.
+func (r ResourceList) Get(info *resource.Info) *resource.Info {
+	for _, i := range r {
+		if isMatchingInfo(i, info) {
+			return i
+		}
+	}
+	return nil
+}
+
+// Contains checks to see if an object exists.
+func (r ResourceList) Contains(info *resource.Info) bool {
+	for _, i := range r {
+		if isMatchingInfo(i, info) {
+			return true
+		}
+	}
+	return false
+}
+
+// Difference will return a new Result with objects not contained in rs.
+func (r ResourceList) Difference(rs ResourceList) ResourceList {
+	return r.Filter(func(info *resource.Info) bool {
+		return !rs.Contains(info)
+	})
+}
+
+// Intersect will return a new Result with objects contained in both Results.
+func (r ResourceList) Intersect(rs ResourceList) ResourceList {
+	return r.Filter(rs.Contains)
+}
+
+// isMatchingInfo returns true if infos match on Name, Namespace, Group and Kind.
+//
+// IMPORTANT: Version is intentionally excluded from the comparison. Resources
+// served by the same CRD at different API versions (e.g. v2beta1 vs v2beta2)
+// share the same underlying storage in the Kubernetes API server. Comparing
+// the full GroupVersionKind causes Difference() to treat a version change as
+// a resource removal + addition, which makes Helm delete the resource it just
+// created during upgrades. See https://github.com/helm/helm/issues/31768
+func isMatchingInfo(a, b *resource.Info) bool {
+	return a.Name == b.Name && a.Namespace == b.Namespace && a.Mapping.GroupVersionKind.GroupKind() == b.Mapping.GroupVersionKind.GroupKind()
+}