52e01264e8
By defining and using an proxy.Exchanger interface we make the proxy more generic and we can then fold back httproxy into proxy. This overrides #463 and #473 and should make futures extensions rather trivial * Add docs that talk about `protocol` and how to set it. * middleware/proxy: rename New to NewLookup It's used as a Lookup mechanism not as a completely new proxy, reflect that in the name. * Set maxfails to 3 by default when looking up names. Most of the changes have been copied from https://github.com/johnbelamaric/coredns/pull/1/files
92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
// +build etcd
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package test
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import (
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"io/ioutil"
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"log"
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"testing"
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"github.com/miekg/coredns/middleware/etcd/msg"
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"github.com/miekg/coredns/middleware/proxy"
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"github.com/miekg/coredns/middleware/test"
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"github.com/miekg/coredns/request"
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"github.com/miekg/dns"
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"golang.org/x/net/context"
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)
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// uses some stuff from etcd_tests.go
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func TestEtcdCacheAndDebug(t *testing.T) {
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corefile := `.:0 {
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etcd skydns.test {
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path /skydns
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debug
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}
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cache skydns.test
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}`
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ex, err := CoreDNSServer(corefile)
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if err != nil {
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t.Fatalf("Could not get CoreDNS serving instance: %s", err)
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}
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udp, _ := CoreDNSServerPorts(ex, 0)
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if udp == "" {
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t.Fatalf("Could not get UDP listening port")
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}
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defer ex.Stop()
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etc := etcdMiddleware()
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log.SetOutput(ioutil.Discard)
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var ctx = context.TODO()
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for _, serv := range servicesCacheTest {
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set(ctx, t, etc, serv.Key, 0, serv)
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defer delete(ctx, t, etc, serv.Key)
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}
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p := proxy.NewLookup([]string{udp})
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state := request.Request{W: &test.ResponseWriter{}, Req: new(dns.Msg)}
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resp, err := p.Lookup(state, "b.example.skydns.test.", dns.TypeA)
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if err != nil {
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t.Errorf("Expected to receive reply, but didn't: %s", err)
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}
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checkResponse(t, resp)
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resp, err = p.Lookup(state, "o-o.debug.b.example.skydns.test.", dns.TypeA)
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if err != nil {
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t.Errorf("Expected to receive reply, but didn't: %s", err)
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}
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checkResponse(t, resp)
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if len(resp.Extra) != 1 {
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t.Errorf("Expected one RR in additional section, got: %d", len(resp.Extra))
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}
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resp, err = p.Lookup(state, "b.example.skydns.test.", dns.TypeA)
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if err != nil {
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t.Errorf("Expected to receive reply, but didn't: %s", err)
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}
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checkResponse(t, resp)
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if len(resp.Extra) != 0 {
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t.Errorf("Expected no RRs in additional section, got: %d", len(resp.Extra))
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}
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}
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func checkResponse(t *testing.T, resp *dns.Msg) {
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if len(resp.Answer) == 0 {
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t.Fatal("Expected to at least one RR in the answer section, got none")
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}
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if resp.Answer[0].Header().Rrtype != dns.TypeA {
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t.Errorf("Expected RR to A, got: %d", resp.Answer[0].Header().Rrtype)
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}
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if resp.Answer[0].(*dns.A).A.String() != "127.0.0.1" {
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t.Errorf("Expected 127.0.0.1, got: %d", resp.Answer[0].(*dns.A).A.String())
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}
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}
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var servicesCacheTest = []*msg.Service{
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{Host: "127.0.0.1", Port: 666, Key: "b.example.skydns.test."},
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}
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