Add a new configuration option for required field generation

pkg/config/common.go

@@ -128,6 +128,7 @@ func MoveToStatus(sch *schema.Resource, fieldpaths ...string) {
 // useful in cases where external name contains an optional parameter that is
 // defaulted by the provider but we need it to exist or to fix plain buggy
 // schemas.
+// Deprecated: Use RequiredFields API instead.
 func MarkAsRequired(sch *schema.Resource, fieldpaths ...string) {
 	for _, fieldpath := range fieldpaths {
 		if s := GetSchema(sch, fieldpath); s != nil {

pkg/config/resource.go

@@ -162,6 +162,10 @@ type ExternalName struct {
 	// management policy is including the Observe Only, different from other
 	// (required) fields.
 	IdentifierFields []string
+
+	// RequiredFields are the fields that are marked as required, although
+	// it is not required in the TF schema.
+	RequiredFields []string
 }
 
 // References represents reference resolver configurations for the fields of a

pkg/types/builder.go

@@ -381,6 +381,9 @@ func newTopLevelRequiredParam(path string, includeInit bool) *topLevelRequiredPa
 
 func (r *resource) addParameterField(f *Field, field *types.Var) {
 	requiredBySchema := !f.Schema.Optional
+	if f.Required {
+		requiredBySchema = f.Required
+	}
 	// Note(turkenh): We are collecting the top level required parameters that
 	// are not identifier fields. This is for generating CEL validation rules for
 	// those parameters and not to require them if the management policy is set

pkg/types/field.go

@@ -45,6 +45,7 @@ type Field struct {
 	TransformedName                          string
 	SelectorName                             string
 	Identifier                               bool
+	Required                                 bool
 	// Injected is set if this Field is an injected field to the Terraform
 	// schema as an object list map key for server-side apply merges.
 	Injected bool
@@ -120,6 +121,12 @@ func NewField(g *Builder, cfg *config.Resource, r *resource, sch *schema.Schema,
 		}
 	}
 
+	for _, required := range cfg.ExternalName.RequiredFields {
+		if required == snakeFieldName {
+			f.Required = true
+		}
+	}
+
 	var commentText string
 	docString := getDocString(cfg, f, tfPath)
 	if len(docString) > 0 {