read and verify the version

1 files changed, 30 insertions, 5 deletions

diff --git a/load.go b/load.go
index 93bd19a..dba0bf1 100644
--- a/load.go
+++ b/load.go
@@ -73,19 +73,44 @@ func ConfigLoad(pb proto.Message, argname string, protoname string) error {
 func Load(pb proto.Message) error {
 	fullname, err := GetFilename(pb)
 	if err != nil {
-		log.Info("filename =", fullname, err)
+		log.Info("'Filename' is not in: =", fullname, err)
 		return err
 	}
+	ver, err := GetString(pb, "version")
+	if err != nil {
+		log.Info("'Version' is not in: =", fullname, err)
+		return err
+	}
+	var worked bool
 	if strings.HasSuffix(fullname, ".text") {
-		return loadTEXT(pb, fullname)
+		if err := loadTEXT(pb, fullname); err != nil {
+			return err
+		}
+		worked = true
 	}
 	if strings.HasSuffix(fullname, ".json") {
-		return loadJSON(pb, fullname)
+		if err := loadJSON(pb, fullname); err != nil {
+			return err
+		}
+		worked = true
 	}
 	if strings.HasSuffix(fullname, ".pb") {
-		return loadPB(pb, fullname)
+		if err := loadPB(pb, fullname); err != nil {
+			return err
+		}
+		worked = true
 	}
-	return log.Errorf("unknown filetype %s", fullname)
+	if !worked {
+		return log.Errorf("unknown filetype %s", fullname)
+	}
+	newver, _ := GetString(pb, "version")
+	if ver != newver {
+		log.Printf("VERSION '%s' != '%s'\n", ver, newver)
+		log.Info("Your protobuf file is old and can not be loaded")
+		log.Info("You must delete or convert the file", fullname)
+		panic("protobuf version mismatch")
+	}
+	return nil
 }
 
 func LoadFile(pb proto.Message, fullname string) error {