move this heredevel

1 files changed, 63 insertions, 0 deletions

diff --git a/versionCheck.go b/versionCheck.go
new file mode 100644
index 0000000..7b2ff77
--- /dev/null
+++ b/versionCheck.go
@@ -0,0 +1,63 @@
+package filepb
+
+import (
+	"errors"
+	"fmt"
+
+	"google.golang.org/protobuf/proto"
+)
+
+// verify 'version' for .pb files
+// application should die if they don't match
+// returns (newVersion, oldVersion, error)
+func VersionCheck(pb proto.Message) (string, string, error) {
+	fullname, err := GetFilename(pb)
+	if err != nil {
+		return "", "", err
+	}
+	return VersionCheckFile(pb, fullname)
+}
+
+// verify 'version' for .pb files
+// application should die if they don't match
+// returns (newVersion, oldVersion, error)
+func VersionCheckFile(pb proto.Message, filename string) (string, string, error) {
+	var newVersion string
+	var newUuid string
+	var err error
+
+	newVersion, err = GetString(pb, "version")
+	if err != nil {
+		fmt.Printf("VersionCheckFile() filename (%s)\n", filename)
+		fmt.Printf("VersionCheckFile() err (%v)\n", err)
+		return newVersion, "", err
+	}
+
+	newUuid, err = GetString(pb, "uuid")
+	if err != nil {
+		fmt.Printf("VersionCheckFile() filename (%s)\n", filename)
+		fmt.Printf("VersionCheckFile() err (%v)\n", err)
+		return newUuid, "", err
+	}
+
+	oldVersion, oldUuid, err := IdentifyPB(filename)
+	if err != nil {
+		fmt.Printf("VersionCheckFile() filename (%s)\n", filename)
+		fmt.Printf("VersionCheckFile() err (%v)\n", err)
+		return newVersion, oldVersion, err
+	}
+
+	if newVersion != oldVersion {
+		fmt.Printf("VersionCheckFile() filename (%s)\n", filename)
+		fmt.Printf("VersionCheckFile() Version (%s) ne (%s)\n", newVersion, oldVersion)
+		return newVersion, oldVersion, errors.New("version mismatch")
+	}
+
+	if newUuid != oldUuid {
+		fmt.Printf("VersionCheckFile() filename (%s)\n", filename)
+		fmt.Printf("VersionCheckFile() UUID (%s) ne (%s)\n", newUuid, oldUuid)
+		return newUuid, oldUuid, errors.New("UUID mismatch")
+	}
+
+	return newVersion, oldVersion, nil
+}