1 files changed, 85 insertions, 0 deletions
diff --git a/src/k8splugin/internal/statuscheck/resource.go b/src/k8splugin/internal/statuscheck/resource.go
new file mode 100644
index 00000000..598af2fb
--- /dev/null
+++ b/src/k8splugin/internal/statuscheck/resource.go
@@ -0,0 +1,85 @@
+/*
+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 statuscheck // import "helm.sh/helm/v3/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.
+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 and GroupVersionKind.
+func isMatchingInfo(a, b *resource.Info) bool {
+	return a.Name == b.Name && a.Namespace == b.Namespace && a.Mapping.GroupVersionKind.Kind == b.Mapping.GroupVersionKind.Kind
+}