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62 lines
1.2 KiB
62 lines
1.2 KiB
package dns |
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import ( |
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"bytes" |
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"fmt" |
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"io" |
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"net/netip" |
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) |
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// WriteTo writes the DNS data for the cluster |
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func (mgr *Manager) WriteTo(w io.Writer) (int64, error) { |
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var buf bytes.Buffer |
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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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mgr.writeZoneHosts(&buf, z) |
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// zone alias |
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addrs := mgr.genZoneAddresses(z) |
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zoneName := z.Name |
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rr := AddrRecord{ |
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Name: mgr.fqdn(zoneName + mgr.suffix), |
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Addr: addrs, |
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} |
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_, _ = rr.WriteTo(&buf) |
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// and cache for regions |
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cache[zoneName] = addrs |
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} |
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// regions, sorted |
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for _, name := range mgr.genRegionsSorted() { |
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addrs := mgr.genRegionAddressesCached(name, cache) |
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mgr.writeRegionAddresses(&buf, name, addrs) |
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} |
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return buf.WriteTo(w) |
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} |
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func (mgr *Manager) writeZoneHosts(w io.Writer, z *Zone) { |
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_, _ = fmt.Fprintf(w, ";\n; %s\n;\n", z.Name) |
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for _, rr := range mgr.genZoneHostRecords(z) { |
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rr.Name = mgr.fqdn(rr.Name) |
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_, _ = rr.WriteTo(w) |
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} |
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} |
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func (mgr *Manager) writeRegionAddresses(w io.Writer, name string, addrs []netip.Addr) { |
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_, _ = fmt.Fprintf(w, "; %s\n", name) |
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rr := AddrRecord{ |
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Name: mgr.fqdn(name + mgr.suffix), |
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Addr: addrs, |
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} |
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_, _ = rr.WriteTo(w) |
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}
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