fix required fields that are renamed (#393)

A previous commit that used the `github.com/aws-controllers-k8s/pkg/names` package instead of the local `pkg/names` package changed the implementation of the `Field.IsRequired` method slightly by no longer referring to the `names.ModelOriginal` value. This ModelOriginal value was really just a hack from a while ago because we didn't have support for reverse-lookups of renamed fields to original Input/Output struct member names.

This patch adds that reverse lookup and fixes the IsRequired method to properly look up the original struct member name in the Input shape's required list.

Signed-off-by: Jay Pipes <jaypipes@gmail.com>

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Author: jaypipes

pkg/config/resource.go

@@ -145,10 +145,11 @@ type SyncedCondition struct {
 // Example usage from the AmazonMQ generator config:
 //
 // resources:
-//   Broker:
-//     hooks:
-//       sdk_update_pre_build_request:
-//        code: if err := rm.requeueIfNotRunning(latest); err != nil { return nil, err }
+//
+//	Broker:
+//	  hooks:
+//	    sdk_update_pre_build_request:
+//	     code: if err := rm.requeueIfNotRunning(latest); err != nil { return nil, err }
 //
 // Note that the implementor of the AmazonMQ service controller for ACK should
 // ensure that there is a `requeueIfNotRunning()` method implementation in
@@ -159,10 +160,11 @@ type SyncedCondition struct {
 // `template_path` field:
 //
 // resources:
-//   Broker:
-//     hooks:
-//       sdk_update_pre_build_update_request:
-//        template_path: templates/sdk_update_pre_build_request.go.tpl
+//
+//	Broker:
+//	  hooks:
+//	    sdk_update_pre_build_update_request:
+//	     template_path: templates/sdk_update_pre_build_request.go.tpl
 type HooksConfig struct {
 	// Code is the Go code to be injected at the hook point
 	Code *string `json:"code,omitempty"`
@@ -187,27 +189,27 @@ type CompareConfig struct {
 // API accepts a parameter called "Attributes" that can contain one of four
 // keys:
 //
-// * DeliveryPolicy – The policy that defines how Amazon SNS retries failed
-//   deliveries to HTTP/S endpoints.
-// * DisplayName – The display name to use for a topic with SMS subscriptions
-// * Policy – The policy that defines who can access your topic.
-// * KmsMasterKeyId - The ID of an AWS-managed customer master key (CMK) for
-//   Amazon SNS or a custom CMK.
+//   - DeliveryPolicy – The policy that defines how Amazon SNS retries failed
+//     deliveries to HTTP/S endpoints.
+//   - DisplayName – The display name to use for a topic with SMS subscriptions
+//   - Policy – The policy that defines who can access your topic.
+//   - KmsMasterKeyId - The ID of an AWS-managed customer master key (CMK) for
+//     Amazon SNS or a custom CMK.
 //
 // The `CreateTopic` API call **returns** only a single field: the TopicARN.
 // But there is a separate `GetTopicAttributes` call that needs to be made that
 // returns the above attributes (that are ReadWrite) along with a set of
 // key/values that are ReadOnly:
 //
-// * Owner – The AWS account ID of the topic's owner.
-// * SubscriptionsConfirmed – The number of confirmed subscriptions for the
-//   topic.
-// * SubscriptionsDeleted – The number of deleted subscriptions for the topic.
-// * SubscriptionsPending – The number of subscriptions pending confirmation
-//   for the topic.
-// * TopicArn – The topic's ARN.
-// * EffectiveDeliveryPolicy – The JSON serialization of the effective delivery
-//   policy, taking system defaults into account.
+//   - Owner – The AWS account ID of the topic's owner.
+//   - SubscriptionsConfirmed – The number of confirmed subscriptions for the
+//     topic.
+//   - SubscriptionsDeleted – The number of deleted subscriptions for the topic.
+//   - SubscriptionsPending – The number of subscriptions pending confirmation
+//     for the topic.
+//   - TopicArn – The topic's ARN.
+//   - EffectiveDeliveryPolicy – The JSON serialization of the effective delivery
+//     policy, taking system defaults into account.
 //
 // This structure instructs the code generator about the above real, schema'd
 // fields that are masquerading as raw key/value pairs.
@@ -534,6 +536,42 @@ func (c *Config) GetResourceFieldName(
 	return renamed
 }
 
+// GetOriginalMemberName returns the original struct member name within an
+// Input or Output shape given a resource and field name. This accounts for any
+// renames that may have occurred. It is the reverse of the
+// Config.GetResourceFieldName method.
+func (c *Config) GetOriginalMemberName(
+	resourceName string,
+	opID string,
+	fieldName string,
+) string {
+	if c == nil {
+		return fieldName
+	}
+	rConfig, ok := c.Resources[resourceName]
+	if !ok {
+		return fieldName
+	}
+	if rConfig.Renames == nil {
+		return fieldName
+	}
+	oRenames, ok := rConfig.Renames.Operations[opID]
+	if !ok {
+		return fieldName
+	}
+	for from, to := range oRenames.InputFields {
+		if to == fieldName {
+			return from
+		}
+	}
+	for from, to := range oRenames.OutputFields {
+		if to == fieldName {
+			return from
+		}
+	}
+	return fieldName
+}
+
 // GetResourceShortNames returns the CRD list of aliases
 func (c *Config) GetResourceShortNames(resourceName string) []string {
 	if c == nil {

pkg/model/field.go

@@ -75,7 +75,17 @@ func (f *Field) IsRequired() bool {
 	if f.FieldConfig != nil && f.FieldConfig.IsRequired != nil {
 		return *f.FieldConfig.IsRequired
 	}
-	return util.InStrings(f.Names.Original, f.CRD.Ops.Create.InputRef.Shape.Required)
+	// We need to look up the original member name in the input struct
+	// otherwise renamed fields will not be discovered as required.
+	originalMember := f.CRD.Config().GetOriginalMemberName(
+		f.CRD.Names.Original,
+		f.CRD.Ops.Create.Name,
+		f.Names.Original,
+	)
+	return util.InStrings(
+		originalMember,
+		f.CRD.Ops.Create.InputRef.Shape.Required,
+	)
 }
 
 // GetSetterConfig returns the SetFieldConfig object associated with this field
@@ -100,11 +110,13 @@ func (f *Field) GetSetterConfig(opType OpType) *ackgenconfig.SetFieldConfig {
 // Ex:
 // ```
 // Integration:
-//    fields:
-//      ApiId:
-//        references:
-//          resource: API
-//          path: Status.APIID
+//
+//	fields:
+//	  ApiId:
+//	    references:
+//	      resource: API
+//	      path: Status.APIID
+//
 // ```
 // For the above configuration, 'HasReference' for 'ApiId'(Original name) field
 // will return true because a corresponding 'APIRef' field will be generated