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do the grpc _grpc_config as well

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Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2020-03-28 20:11:10 +01:00
parent 638c3e74ed
commit 8f5cbf363e
1 changed files with 10 additions and 1 deletions
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11
plugin/traffic/traffic.go
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@@ -59,7 +59,7 @@ func (t *Traffic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
labels := dns.SplitDomainName(cluster) labels := dns.SplitDomainName(cluster)
switch len(labels) { switch len(labels) {
case 2: case 2:
// endpoint or _tcp // endpoint or _tcp or _grpc_config query
if strings.ToLower(labels[0]) == "_tcp" { if strings.ToLower(labels[0]) == "_tcp" {
// nodata, because empty non-terminal // nodata, because empty non-terminal
m.Ns = soa(state.Zone) m.Ns = soa(state.Zone)
@@ -67,6 +67,15 @@ func (t *Traffic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
w.WriteMsg(m) w.WriteMsg(m)
return 0, nil return 0, nil
} }
if strings.HasPrefix(strings.ToLower(labels[0]), "_grpc_config") {
// this is the grpc config blob encoded in a TXT record, we just return a NXDOMAIN
// make this a separate so we can insert some logic later.
m.Ns = soa(state.Zone)
m.Rcode = dns.RcodeNameError
w.WriteMsg(m)
return 0, nil
}
if strings.HasPrefix(strings.ToLower(labels[0]), "endpoint-") { if strings.HasPrefix(strings.ToLower(labels[0]), "endpoint-") {
// recheck if the cluster exist. // recheck if the cluster exist.
cluster = labels[1] cluster = labels[1]