b52c3418b2
* Add NSID plugin support for CoreDNS This fix adds NSID plugin support for CoreDNS, as was proposed in 1256. Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Add test cases for NSID plugin Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Generate code for NSID plugin Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Use hostname as the default (as with bind), and remove unneeded copy Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Add README.md Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
48 lines
838 B
Go
48 lines
838 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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for c.Next() {
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args := c.RemainingArgs()
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if len(args) == 0 {
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return nsid, nil
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}
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nsid = strings.Join(args, " ")
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return nsid, nil
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}
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return nsid, nil
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}
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