[main] add rancher settings formatters (#1202)

* add rancher settings formatters

* fix doc comment

---------

Co-authored-by: joshmeranda <joshua.meranda@gmail.com>

Author: joshmeranda

pkg/resources/formatters/formatter.go

@@ -5,7 +5,9 @@ import (
 	"compress/gzip"
 	"encoding/base64"
 	"encoding/json"
+	"fmt"
 	"io"
+	"slices"
 
 	// helm v2 is long since deprecated
 	// Unlike helm v3, it uses Protobuf encoding, so we can't use generic decoding without the message descriptors.
@@ -68,6 +70,26 @@ func Pod(_ *types.APIRequest, resource *types.RawResource) {
 	}
 }
 
+var ReadOnlySettings = []string{
+	"cacerts",
+}
+
+// Setting is the default formatter for management.cattle.io.setting resources. This formatter removes the update link from resources which are read-only or cannot be updated by the user.
+func Setting(request *types.APIRequest, resource *types.RawResource) {
+	data := resource.APIObject.Data()
+	if data.String("value") == "" {
+		data.Set("value", data.String("default"))
+	}
+
+	if data.String("source") == "env" || slices.Contains(ReadOnlySettings, resource.ID) {
+		delete(resource.Links, "update")
+	} else {
+		if err := request.AccessControl.CanDo(request, fmt.Sprintf("%s/%s", "management.cattle.io", "settings"), "update", resource.APIObject.Namespace(), resource.APIObject.Name()); err != nil {
+			delete(resource.Links, "update")
+		}
+	}
+}
+
 // decodeHelm3 receives a helm3 release data string, decodes the string data using the standard base64 library
 // and unmarshals the data into release.Release struct to return it.
 func decodeHelm3(data string) (any, error) {

pkg/resources/schema.go

@@ -64,6 +64,10 @@ func DefaultSchemaTemplates(cf *client.Factory,
 			ID:        "pod",
 			Formatter: formatters.Pod,
 		},
+		{
+			ID:        "management.cattle.io.setting",
+			Formatter: formatters.Setting,
+		},
 		{
 			ID: "management.cattle.io.cluster",
 			Customize: func(apiSchema *types.APISchema) {
@@ -96,6 +100,10 @@ func DefaultSchemaTemplatesForStore(store types.Store,
 			ID:        "pod",
 			Formatter: formatters.Pod,
 		},
+		{
+			ID:        "management.cattle.io.setting",
+			Formatter: formatters.Setting,
+		},
 		{
 			ID: "management.cattle.io.cluster",
 			Customize: func(apiSchema *types.APISchema) {