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package config
import (
"errors"
"log"
"go.wit.com/lib/protobuf/filepb"
"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 {
log.Printf("VersionCheckFile() filename (%s)\n", filename)
log.Printf("VersionCheckFile() err (%v)\n", err)
return newVersion, "", err
}
newUuid, err = GetString(pb, "uuid")
if err != nil {
log.Printf("VersionCheckFile() filename (%s)\n", filename)
log.Printf("VersionCheckFile() err (%v)\n", err)
return newUuid, "", err
}
oldVersion, oldUuid, err := filepb.IdentifyPB(filename)
if err != nil {
log.Printf("VersionCheckFile() filename (%s)\n", filename)
log.Printf("VersionCheckFile() err (%v)\n", err)
return newVersion, oldVersion, err
}
if newVersion != oldVersion {
log.Printf("VersionCheckFile() filename (%s)\n", filename)
log.Printf("VersionCheckFile() Version (%s) ne (%s)\n", newVersion, oldVersion)
return newVersion, oldVersion, errors.New("version mismatch")
}
if newUuid != oldUuid {
log.Printf("VersionCheckFile() filename (%s)\n", filename)
log.Printf("VersionCheckFile() UUID (%s) ne (%s)\n", newUuid, oldUuid)
return newUuid, oldUuid, errors.New("UUID mismatch")
}
return newVersion, oldVersion, nil
}
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