// get new key ID for flow definition
func NextFlowDefKey(d *db.Database, flowName string) (string, error) {
newVersionNum := 1.0
// get flow def last version
lastVersionStr, err := d.GetValue("_flow:" + flowName + ":_lastversion")
if lastVersionStr != "" {
// convert version string to num
lastVersionNum, err := strconv.ParseFloat(lastVersionStr, 64)
if err != nil {
return "", err
}
// add 1 to last version
newVersionNum = lastVersionNum + 1
}
return "_flow:" + flowName + ":_version:" + base.FloatToString(newVersionNum), err
}
func writeLastVersion(d *db.Database, flowName string, version string) error {
_, err := d.PutValue("_flow:"+flowName+":_lastversion", version)
return err
}