Check code changes before creating new version resource

Author: Vandita2020

apis/v1alpha1/ack-generate-metadata.yaml

@@ -1,13 +1,13 @@
 ack_generate_info:
-  build_date: "2023-10-10T22:42:32Z"
-  build_hash: d09dce1bd00f7247f8dac7c0a2129cf94e7ecdbc
+  build_date: "2023-10-16T17:14:06Z"
+  build_hash: 7a92e8913d7ee7f65b761552e764e994882a49af
   go_version: go1.19
-  version: v0.27.1-1-gd09dce1
+  version: v0.27.1-5-g7a92e89
 api_directory_checksum: 6d988b03425fad3e88d887c1cd4510a07e4be281
 api_version: v1alpha1
 aws_sdk_go_version: v1.44.181
 generator_config_info:
-  file_checksum: fd84287296bf07630b7c3190bb2c5d78a3f73bd2
+  file_checksum: 8d041799a39b7a4f169b8a95d23b0ecc810ad8be
   original_file_name: generator.yaml
 last_modification:
   reason: API generation

apis/v1alpha1/generator.yaml

@@ -228,6 +228,10 @@ resources:
     hooks:
       sdk_read_one_pre_build_request:
         template_path: hooks/version/sdk_read_one_pre_build_request.go.tpl
+      sdk_create_pre_build_request:
+        template_path: hooks/version/sdk_create_pre_build_request.go.tpl
+      sdk_create_pre_set_output:
+        template_path: hooks/version/sdk_create_pre_set_output.go.tpl
     renames:
       operations:
         DeleteFunction:

generator.yaml

@@ -228,6 +228,10 @@ resources:
     hooks:
       sdk_read_one_pre_build_request:
         template_path: hooks/version/sdk_read_one_pre_build_request.go.tpl
+      sdk_create_pre_build_request:
+        template_path: hooks/version/sdk_create_pre_build_request.go.tpl
+      sdk_create_pre_set_output:
+        template_path: hooks/version/sdk_create_pre_set_output.go.tpl
     renames:
       operations:
         DeleteFunction:

pkg/resource/version/sdk.go

@@ -0,0 +1,18 @@
+res := &svcsdk.ListVersionsByFunctionInput{}
+res.FunctionName = desired.ko.Spec.FunctionName
+var list *svcsdk.ListVersionsByFunctionOutput
+list, err = rm.sdkapi.ListVersionsByFunctionWithContext(ctx, res)
+if err != nil {
+	return nil, err
+}
+bigList := list.Versions
+
+for ok := list.NextMarker != nil; ok; ok = (list.NextMarker != nil) {
+	res.Marker = list.NextMarker
+	list, err = rm.sdkapi.ListVersionsByFunctionWithContext(ctx, res)
+	if err != nil {
+		return nil, err
+	}
+	bigList = append(bigList, list.Versions...)
+}
+

templates/hooks/version/sdk_create_pre_build_request.go.tpl

@@ -0,0 +1,6 @@
+for _, version := range bigList{
+    if *version.Version == *resp.Version{
+        ErrCannotCreateResource := errors.New("No changes were made to $LATEST since publishing last version, so no version was published.")
+        return nil, ackerr.NewTerminalError(ErrCannotCreateResource)
+    }
+}

templates/hooks/version/sdk_create_pre_set_output.go.tpl

@@ -6,6 +6,6 @@ metadata:
     services.k8s.aws/region: $AWS_REGION
 spec:
   functionName: $FUNCTION_NAME
-  # codeSha256: $HASH
-  # revisionId: $ID
+  codeSha256: $HASH
+  revisionId: $ID
   description: version created by ACK lambda-controller e2e tests