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f697b33283
* plugins: Return error for multiple use of some Return plugin.ErrOnce when a plugin that doesn't support it, is called mutliple times. This now adds it for: cache, dnssec, errors, forward, hosts, nsid. And changes it slightly in kubernetes, pprof, reload, root. * more tests
52 lines
861 B
Go
52 lines
861 B
Go
package nsid
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import (
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"os"
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"strings"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("nsid", caddy.Plugin{
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ServerType: "dns",
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Action: setup,
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})
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}
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func setup(c *caddy.Controller) error {
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nsid, err := nsidParse(c)
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if err != nil {
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return plugin.Error("nsid", err)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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return Nsid{Next: next, Data: nsid}
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})
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return nil
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}
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func nsidParse(c *caddy.Controller) (string, error) {
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// Use hostname as the default
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nsid, err := os.Hostname()
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if err != nil {
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nsid = "localhost"
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}
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i := 0
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for c.Next() {
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if i > 0 {
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return nsid, plugin.ErrOnce
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}
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i++
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args := c.RemainingArgs()
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if len(args) > 0 {
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nsid = strings.Join(args, " ")
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}
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}
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return nsid, nil
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}
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