Adds a client that enables strict field validation by default

pkg/client/client.go

@@ -56,6 +56,10 @@ type Options struct {
 
 	// DryRun instructs the client to only perform dry run requests.
 	DryRun *bool
+
+	// Strict instructs the client to enable strict field validation
+	// for all requests.
+	Strict *bool
 }
 
 // WarningHandlerOptions are options for configuring a
@@ -111,6 +115,9 @@ func New(config *rest.Config, options Options) (c Client, err error) {
 	if err == nil && options.DryRun != nil && *options.DryRun {
 		c = NewDryRunClient(c)
 	}
+	if err == nil && options.Strict != nil && *options.Strict {
+		c = NewStrictClient(c)
+	}
 	return c, err
 }
 

pkg/client/strict.go

@@ -0,0 +1,130 @@
+/*
+Copyright 2024 The Kubernetes 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 client
+
+import (
+	"context"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+// NewStrictClient wraps an existing client and enforces strict field validation
+// on all mutating api calls.
+func NewStrictClient(c Client) Client {
+	return &StrictClient{client: c}
+}
+
+var _ Client = &StrictClient{}
+
+// StrictClient is a Client that wraps another Client in order to enforce strict field validation.
+type StrictClient struct {
+	client Client
+}
+
+// Scheme returns the scheme this client is using.
+func (c *StrictClient) Scheme() *runtime.Scheme {
+	return c.client.Scheme()
+}
+
+// RESTMapper returns the rest mapper this client is using.
+func (c *StrictClient) RESTMapper() meta.RESTMapper {
+	return c.client.RESTMapper()
+}
+
+// GroupVersionKindFor returns the GroupVersionKind for the given object.
+func (c *StrictClient) GroupVersionKindFor(obj runtime.Object) (schema.GroupVersionKind, error) {
+	return c.client.GroupVersionKindFor(obj)
+}
+
+// IsObjectNamespaced returns true if the GroupVersionKind of the object is namespaced.
+func (c *StrictClient) IsObjectNamespaced(obj runtime.Object) (bool, error) {
+	return c.client.IsObjectNamespaced(obj)
+}
+
+// Create implements client.Client.
+func (c *StrictClient) Create(ctx context.Context, obj Object, opts ...CreateOption) error {
+	return c.client.Create(ctx, obj, append(opts, FieldValidationStrict)...)
+}
+
+// Update implements client.Client.
+func (c *StrictClient) Update(ctx context.Context, obj Object, opts ...UpdateOption) error {
+	return c.client.Update(ctx, obj, append(opts, FieldValidationStrict)...)
+}
+
+// Delete implements client.Client.
+func (c *StrictClient) Delete(ctx context.Context, obj Object, opts ...DeleteOption) error {
+	return c.client.Delete(ctx, obj, opts...)
+}
+
+// DeleteAllOf implements client.Client.
+func (c *StrictClient) DeleteAllOf(ctx context.Context, obj Object, opts ...DeleteAllOfOption) error {
+	return c.client.DeleteAllOf(ctx, obj, opts...)
+}
+
+// Patch implements client.Client.
+func (c *StrictClient) Patch(ctx context.Context, obj Object, patch Patch, opts ...PatchOption) error {
+	return c.client.Patch(ctx, obj, patch, append(opts, FieldValidationStrict)...)
+}
+
+// Get implements client.Client.
+func (c *StrictClient) Get(ctx context.Context, key ObjectKey, obj Object, opts ...GetOption) error {
+	return c.client.Get(ctx, key, obj, opts...)
+}
+
+// List implements client.Client.
+func (c *StrictClient) List(ctx context.Context, obj ObjectList, opts ...ListOption) error {
+	return c.client.List(ctx, obj, opts...)
+}
+
+// Status implements client.StatusClient.
+func (c *StrictClient) Status() SubResourceWriter {
+	return c.SubResource("status")
+}
+
+// SubResource implements client.SubResourceClient.
+func (c *StrictClient) SubResource(subResource string) SubResourceClient {
+	return &StrictSubResourceClient{client: c.client.SubResource(subResource)}
+}
+
+// ensure StrictSubResourceWriter implements client.SubResourceWriter.
+var _ SubResourceWriter = &StrictSubResourceClient{}
+
+// StrictSubResourceClient is client.SubResourceWriter that writes status subresource with strict field validation
+// enforced.
+type StrictSubResourceClient struct {
+	client SubResourceClient
+}
+
+func (sw *StrictSubResourceClient) Get(ctx context.Context, obj, subResource Object, opts ...SubResourceGetOption) error {
+	return sw.client.Get(ctx, obj, subResource, opts...)
+}
+
+func (sw *StrictSubResourceClient) Create(ctx context.Context, obj, subResource Object, opts ...SubResourceCreateOption) error {
+	return sw.client.Create(ctx, obj, subResource, append(opts, FieldValidationStrict)...)
+}
+
+// Update implements client.SubResourceWriter.
+func (sw *StrictSubResourceClient) Update(ctx context.Context, obj Object, opts ...SubResourceUpdateOption) error {
+	return sw.client.Update(ctx, obj, append(opts, FieldValidationStrict)...)
+}
+
+// Patch implements client.SubResourceWriter.
+func (sw *StrictSubResourceClient) Patch(ctx context.Context, obj Object, patch Patch, opts ...SubResourcePatchOption) error {
+	return sw.client.Patch(ctx, obj, patch, append(opts, FieldValidationStrict)...)
+}