func lockNodes(nodes models.Nodes, operation string) (*lock.AppLock, error) {
locks := make(map[uuid.UUID]string)
for _, node := range nodes {
locks[node.NodeId] = fmt.Sprintf("%s : %s", operation, node.Hostname)
}
appLock := lock.NewAppLock(locks)
if err := GetApp().GetLockManager().AcquireLock(*appLock); err != nil {
return nil, err
}
return appLock, nil
}
func lockNode(nodeId uuid.UUID, hostname string, operation string) (*lock.AppLock, error) {
//lock the node
locks := make(map[uuid.UUID]string)
if nodeId.IsZero() {
//Generate temporary UUID from hostname for the node
//for locking as the UUID is not available at this point
id, err := uuid.Parse(util.Md5FromString(hostname))
if err != nil {
logger.Get().Error(fmt.Sprintf("Unable to create the UUID for locking for host: %s:", hostname), err)
return nil, err
}
nodeId = *id
}
locks[nodeId] = fmt.Sprintf("%s : %s", operation, hostname)
appLock := lock.NewAppLock(locks)
if err := GetApp().GetLockManager().AcquireLock(*appLock); err != nil {
return nil, err
}
return appLock, nil
}