// AttachNode - attach node
func (dt donut) AttachNode(hostname string, disks []string) error {
if hostname == "" || len(disks) == 0 {
return iodine.New(InvalidArgument{}, nil)
}
node, err := newNode(hostname)
if err != nil {
return iodine.New(err, nil)
}
dt.nodes[hostname] = node
for i, d := range disks {
newDisk, err := disk.New(d)
if err != nil {
return iodine.New(err, nil)
}
if err := newDisk.MakeDir(dt.name); err != nil {
return iodine.New(err, nil)
}
if err := node.AttachDisk(newDisk, i); err != nil {
return iodine.New(err, nil)
}
}
return nil
}
// attachDonutNode - wrapper function to instantiate a new node for associated donut
// based on the provided configuration
func (d donut) attachDonutNode(hostname string, disks []string) error {
node, err := NewNode(hostname)
if err != nil {
return iodine.New(err, nil)
}
donutName := d.name
for i, d := range disks {
// Order is necessary for maps, keep order number separately
newDisk, err := disk.New(d)
if err != nil {
return iodine.New(err, nil)
}
if err := newDisk.MakeDir(donutName); err != nil {
return iodine.New(err, nil)
}
if err := node.AttachDisk(newDisk, i); err != nil {
return iodine.New(err, nil)
}
}
if err := d.AttachNode(node); err != nil {
return iodine.New(err, nil)
}
return nil
}