3110306296
When coredns unmarshals a json value and it fails it will put the error in the returned message iff the query was a debug query (o-o.debug.<REST>).
56 lines
1 KiB
Go
56 lines
1 KiB
Go
package etcd
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import (
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"strings"
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"github.com/miekg/coredns/middleware/etcd/msg"
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"github.com/miekg/dns"
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)
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const debugName = "o-o.debug."
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// isDebug checks if name is a debugging name, i.e. starts with o-o.debug.
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// it return the empty string if it is not a debug message, otherwise it will return the
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// name with o-o.debug. stripped off.
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func isDebug(name string) string {
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if len(name) == len(debugName) {
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return ""
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}
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debug := strings.HasPrefix(name, debugName)
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if !debug {
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return ""
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}
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return name[len(debugName):]
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}
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// servicesToTxt puts debug in TXT RRs.
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func servicesToTxt(debug []msg.Service) []dns.RR {
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if debug == nil {
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return nil
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}
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rr := make([]dns.RR, len(debug))
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for i, d := range debug {
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rr[i] = d.RR()
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}
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return rr
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}
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func errorToTxt(err error) dns.RR {
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if err == nil {
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return nil
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}
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msg := err.Error()
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if len(msg) > 255 {
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msg = msg[:255]
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}
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t := new(dns.TXT)
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t.Hdr.Class = dns.ClassCHAOS
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t.Hdr.Ttl = 0
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t.Hdr.Rrtype = dns.TypeTXT
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t.Hdr.Name = "."
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t.Txt = []string{msg}
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return t
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}
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