81af74aad0
This fix fixes import path from `github.com/miekg/coredns` -> `github.com/coredns/coredns`
76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
// Package auto implements a on-the-fly loading file backend.
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package auto
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import (
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"sync"
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"github.com/coredns/coredns/middleware/file"
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)
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// Zones maps zone names to a *Zone. This keep track of what we zones we have loaded at
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// any one time.
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type Zones struct {
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Z map[string]*file.Zone // A map mapping zone (origin) to the Zone's data.
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names []string // All the keys from the map Z as a string slice.
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origins []string // Any origins from the server block.
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sync.RWMutex
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}
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// Names returns the names from z.
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func (z *Zones) Names() []string {
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z.RLock()
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n := z.names
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z.RUnlock()
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return n
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}
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// Origins returns the origins from z.
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func (z *Zones) Origins() []string {
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// doesn't need locking, because there aren't multiple Go routines accessing it.
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return z.origins
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}
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// Zones returns a zone with origin name from z, nil when not found.
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func (z *Zones) Zones(name string) *file.Zone {
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z.RLock()
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zo := z.Z[name]
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z.RUnlock()
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return zo
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}
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// Add adds a new zone into z. If zo.NoReload is false, the
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// reload goroutine is started.
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func (z *Zones) Add(zo *file.Zone, name string) {
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z.Lock()
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if z.Z == nil {
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z.Z = make(map[string]*file.Zone)
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}
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z.Z[name] = zo
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z.names = append(z.names, name)
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zo.Reload()
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z.Unlock()
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}
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// Remove removes the zone named name from z. It also stop the the zone's reload goroutine.
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func (z *Zones) Remove(name string) {
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z.Lock()
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if zo, ok := z.Z[name]; ok && !zo.NoReload {
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zo.ReloadShutdown <- true
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}
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delete(z.Z, name)
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// TODO(miek): just regenerate Names (might be bad if you have a lot of zones...)
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z.names = []string{}
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for n := range z.Z {
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z.names = append(z.names, n)
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}
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z.Unlock()
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}
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