122 lines
2.1 KiB
Go
122 lines
2.1 KiB
Go
package dns
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import (
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"fmt"
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"net/netip"
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"sort"
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"time"
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"darvaza.org/core"
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"github.com/libdns/libdns"
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)
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// SortAddrSlice ...
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func SortAddrSlice(s []netip.Addr) []netip.Addr {
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sort.Slice(s, func(i, j int) bool {
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return s[i].Less(s[j])
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})
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return s
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}
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// AddrRecord represents an A or AAAA record
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type AddrRecord struct {
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Name string
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Addr []netip.Addr
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}
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// Sort sorts the addresses of the record
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func (rr *AddrRecord) Sort() {
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SortAddrSlice(rr.Addr)
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}
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// Export converts the record into libdns.Record
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func (rr *AddrRecord) Export() []libdns.Record {
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out := make([]libdns.Record, len(rr.Addr))
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for i, addr := range rr.Addr {
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out[i] = libdns.Record{
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Name: rr.Name,
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TTL: time.Second * 1,
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Type: core.IIf(addr.Is6(), "AAAA", "A"),
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Value: addr.String(),
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}
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}
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return out
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}
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func (mgr *Manager) genAllAddrRecords() []AddrRecord {
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var out []AddrRecord
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cache := make(map[string][]netip.Addr)
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// zones
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for _, z := range mgr.zones {
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// machines
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s := mgr.genZoneMachineRecords(z)
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out = append(out, s...)
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// zone alias
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addrs := mgr.genZoneAddresses(z)
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name := z.Name
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out = append(out, AddrRecord{
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Name: name + mgr.suffix,
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Addr: addrs,
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})
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// and cache for regions
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cache[name] = addrs
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}
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// regions
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for name, zones := range mgr.regions {
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var addrs []netip.Addr
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for _, z := range zones {
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addrs = append(addrs, cache[z]...)
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}
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rec := AddrRecord{
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Name: name + mgr.suffix,
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Addr: addrs,
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}
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rec.Sort()
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out = append(out, rec)
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}
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// sort
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sort.Slice(out, func(i, j int) bool {
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return out[i].Name < out[j].Name
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})
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return out
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}
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func (*Manager) genZoneAddresses(z *Zone) []netip.Addr {
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var out []netip.Addr
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for _, p := range z.Machines {
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if p.Active {
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out = append(out, p.Addrs...)
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}
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}
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SortAddrSlice(out)
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return out
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}
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func (mgr *Manager) genZoneMachineRecords(z *Zone) []AddrRecord {
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out := make([]AddrRecord, 0, len(z.Machines))
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for _, p := range z.Machines {
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rec := AddrRecord{
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Name: fmt.Sprintf("%s-%v%s", z.Name, p.ID, mgr.suffix),
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Addr: p.Addrs,
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}
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out = append(out, rec)
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}
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return out
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}
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