bcb2eb1ecc
* kubernetes/reverse: remove deadcode * deadcode in errors and kubernetes removed * unnecessary conversion * constants * proxy: time.Since() * simplications * static check * Disable test/external_test
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package dnstap
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import (
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"fmt"
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"io"
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"golang.org/x/net/context"
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"github.com/coredns/coredns/middleware"
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"github.com/coredns/coredns/middleware/dnstap/msg"
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"github.com/coredns/coredns/middleware/dnstap/taprw"
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tap "github.com/dnstap/golang-dnstap"
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"github.com/miekg/dns"
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)
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type Dnstap struct {
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Next middleware.Handler
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Out io.Writer
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Pack bool
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}
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func tapMessageTo(w io.Writer, m *tap.Message) error {
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frame, err := msg.Marshal(m)
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if err != nil {
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return fmt.Errorf("marshal: %s", err)
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}
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_, err = w.Write(frame)
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return err
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}
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func (h Dnstap) TapMessage(m *tap.Message) error {
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return tapMessageTo(h.Out, m)
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}
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func (h Dnstap) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
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rw := &taprw.ResponseWriter{ResponseWriter: w, Taper: &h, Query: r, Pack: h.Pack}
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rw.QueryEpoch()
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code, err := middleware.NextOrFailure(h.Name(), h.Next, ctx, rw, r)
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if err != nil {
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// ignore dnstap errors
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return code, err
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}
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if err := rw.DnstapError(); err != nil {
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return code, middleware.Error("dnstap", err)
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}
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return code, nil
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}
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func (h Dnstap) Name() string { return "dnstap" }
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