//Init initilizes ipam module
func New(state state.State, config *config.BalancerConfig) (Allocator, error) {
var rangeCursor *ipaddr.Cursor
var err error
ranges := strings.Join(config.Ipam.Ranges, ",")
if ranges != "" {
rangeCursor, err = ipaddr.Parse(ranges)
if err != nil {
return nil, errors.Wrap(err, "error parsing IPAM ranges")
}
}
return &Ipam{rangeCursor, state, config}, nil
}
func ExampleCursor_traversal() {
c, err := ipaddr.Parse("2001:db8::/126,192.0.2.128/30,198.51.100.0/29")
if err != nil {
log.Fatal(err)
}
fmt.Println(c.Pos(), c.First(), c.Last(), c.List())
for pos := c.Next(); pos != nil; pos = c.Next() {
fmt.Println(pos)
}
fmt.Println(c.Pos(), c.First(), c.Last(), c.List())
for pos := c.Prev(); pos != nil; pos = c.Prev() {
fmt.Println(pos)
}
fmt.Println(c.Pos(), c.First(), c.Last(), c.List())
// Output:
// &{192.0.2.128 192.0.2.128/30} &{192.0.2.128 192.0.2.128/30} &{2001:db8::3 2001:db8::/126} [192.0.2.128/30 198.51.100.0/29 2001:db8::/126]
// &{192.0.2.129 192.0.2.128/30}
// &{192.0.2.130 192.0.2.128/30}
// &{192.0.2.131 192.0.2.128/30}
// &{198.51.100.0 198.51.100.0/29}
// &{198.51.100.1 198.51.100.0/29}
// &{198.51.100.2 198.51.100.0/29}
// &{198.51.100.3 198.51.100.0/29}
// &{198.51.100.4 198.51.100.0/29}
// &{198.51.100.5 198.51.100.0/29}
// &{198.51.100.6 198.51.100.0/29}
// &{198.51.100.7 198.51.100.0/29}
// &{2001:db8:: 2001:db8::/126}
// &{2001:db8::1 2001:db8::/126}
// &{2001:db8::2 2001:db8::/126}
// &{2001:db8::3 2001:db8::/126}
// &{2001:db8::3 2001:db8::/126} &{192.0.2.128 192.0.2.128/30} &{2001:db8::3 2001:db8::/126} [192.0.2.128/30 198.51.100.0/29 2001:db8::/126]
// &{2001:db8::2 2001:db8::/126}
// &{2001:db8::1 2001:db8::/126}
// &{2001:db8:: 2001:db8::/126}
// &{198.51.100.7 198.51.100.0/29}
// &{198.51.100.6 198.51.100.0/29}
// &{198.51.100.5 198.51.100.0/29}
// &{198.51.100.4 198.51.100.0/29}
// &{198.51.100.3 198.51.100.0/29}
// &{198.51.100.2 198.51.100.0/29}
// &{198.51.100.1 198.51.100.0/29}
// &{198.51.100.0 198.51.100.0/29}
// &{192.0.2.131 192.0.2.128/30}
// &{192.0.2.130 192.0.2.128/30}
// &{192.0.2.129 192.0.2.128/30}
// &{192.0.2.128 192.0.2.128/30}
// &{192.0.2.128 192.0.2.128/30} &{192.0.2.128 192.0.2.128/30} &{2001:db8::3 2001:db8::/126} [192.0.2.128/30 198.51.100.0/29 2001:db8::/126]
}
func TestParse(t *testing.T) {
for i, tt := range parseTests {
out, err := ipaddr.Parse(tt.in)
if err != nil {
t.Errorf("#%d: %v", i, err)
continue
}
if !reflect.DeepEqual(out.Pos(), tt.pos) {
t.Errorf("#%d: got %v; want %v", i, out.Pos(), tt.pos)
}
if !reflect.DeepEqual(out.List(), tt.ps) {
t.Errorf("#%d: got %v; want %v", i, out.List(), tt.ps)
}
}
}