add DO NOT EDIT comment

Author: alpancs

content_builder.go

@@ -27,6 +27,13 @@ func (b *contentBuilder) build(protoFile *descriptorpb.FileDescriptorProto) (str
 		return "", errors.New(protoFile.GetName() + ": only one top-level type may be defined in a file (see https://cloud.google.com/pubsub/docs/schemas#schema_types). use nested types or imports (see https://developers.google.com/protocol-buffers/docs/proto)")
 	}
 
+	compVersion := b.request.GetCompilerVersion()
+	fmt.Fprintln(b.output, "// Code generated by protoc-gen-pubsub-schema. DO NOT EDIT.")
+	fmt.Fprintln(b.output, "// versions:")
+	fmt.Fprintln(b.output, "// 	protoc-gen-pubsub-schema v1.4.2")
+	fmt.Fprintf(b.output, "//  protoc                   v%d.%d.%d%s\n", compVersion.GetMajor(), compVersion.GetMinor(), compVersion.GetPatch(), compVersion.GetSuffix())
+	fmt.Fprintln(b.output, "// source:", protoFile.GetName())
+	fmt.Fprintln(b.output, "")
 	fmt.Fprintf(b.output, `syntax = "%s";`, b.schemaSyntax)
 	b.output.WriteString("\n\n")
 	b.buildMessage(protoFile.GetMessageType()[0], 0)

example/user_add_comment.pps

@@ -1,3 +1,9 @@
+// Code generated by protoc-gen-pubsub-schema. DO NOT EDIT.
+// versions:
+// 	protoc-gen-pubsub-schema v1.4.2
+//  protoc                   v3.17.3
+// source: example/user_add_comment.proto
+
 syntax = "proto2";
 
 message UserAddComment {

test/user_add_comment.out

@@ -1,4 +1,4 @@
 file: {
   name: "example/user_add_comment.pps"
-  content: "syntax = \"proto2\";\n\nmessage UserAddComment {\n  required User user = 1;\n  required string comment = 2;\n  repeated ExampleCommonLabel labels = 3;\n  required GoogleProtobufTimestamp timestamp = 101;\n\n  message User {\n    required string first_name = 1;\n    optional string last_name = 2;\n    optional bytes avatar = 3;\n    optional Location location = 4;\n    optional GoogleProtobufTimestamp created_at = 5;\n    optional GoogleProtobufTimestamp updated_at = 6;\n\n    message Location {\n      required double longitude = 1;\n      required double latitude = 2;\n    }\n\n    message GoogleProtobufTimestamp {\n      optional int64 seconds = 1;\n      optional int32 nanos = 2;\n    }\n  }\n\n  message ExampleCommonLabel {\n    optional string key = 1;\n    optional string value = 2;\n  }\n\n  message GoogleProtobufTimestamp {\n    optional int64 seconds = 1;\n    optional int32 nanos = 2;\n  }\n}\n"
+  content: "// Code generated by protoc-gen-pubsub-schema. DO NOT EDIT.\n// versions:\n// 	protoc-gen-pubsub-schema v1.4.2\n//  protoc                   v3.17.3\n// source: example/user_add_comment.proto\n\nsyntax = \"proto2\";\n\nmessage UserAddComment {\n  required User user = 1;\n  required string comment = 2;\n  repeated ExampleCommonLabel labels = 3;\n  required GoogleProtobufTimestamp timestamp = 101;\n\n  message User {\n    required string first_name = 1;\n    optional string last_name = 2;\n    optional bytes avatar = 3;\n    optional Location location = 4;\n    optional GoogleProtobufTimestamp created_at = 5;\n    optional GoogleProtobufTimestamp updated_at = 6;\n\n    message Location {\n      required double longitude = 1;\n      required double latitude = 2;\n    }\n\n    message GoogleProtobufTimestamp {\n      optional int64 seconds = 1;\n      optional int32 nanos = 2;\n    }\n  }\n\n  message ExampleCommonLabel {\n    optional string key = 1;\n    optional string value = 2;\n  }\n\n  message GoogleProtobufTimestamp {\n    optional int64 seconds = 1;\n    optional int32 nanos = 2;\n  }\n}\n"
 }