Some tiny changes and new benchmark test function (#136)

middleware/cache/cache.go

@@ -2,6 +2,7 @@ package cache
 
 import (
 	"log"
+	"strings"
 	"time"
 
 	"github.com/miekg/coredns/middleware"
@@ -28,7 +29,7 @@ func cacheKey(m *dns.Msg, t middleware.MsgType, do bool) string {
 	}
 
 	qtype := m.Question[0].Qtype
-	qname := middleware.Name(m.Question[0].Name).Normalize()
+	qname := strings.ToLower(m.Question[0].Name)
 	switch t {
 	case middleware.Success:
 		fallthrough

middleware/loadbalance/loadbalance.go

@@ -33,7 +33,6 @@ func roundRobin(in []dns.RR) []dns.RR {
 	for _, r := range in {
 		switch r.Header().Rrtype {
 		case dns.TypeCNAME:
-			// d d d d DNAME and friends here as well?
 			cname = append(cname, r)
 		case dns.TypeA, dns.TypeAAAA:
 			address = append(address, r)

test/middleware_test.go

@@ -0,0 +1,42 @@
+package test
+
+import (
+	"io/ioutil"
+	"log"
+	"testing"
+
+	"github.com/miekg/coredns/middleware/test"
+
+	"github.com/miekg/dns"
+)
+
+func BenchmarkLookupBalanceRewriteCache(b *testing.B) {
+	t := new(testing.T)
+	name, rm, err := test.TempFile(t, ".", exampleOrg)
+	if err != nil {
+		t.Fatalf("failed to created zone: %s", err)
+	}
+	defer rm()
+
+	corefile := `example.org:0 {
+    file ` + name + `
+    rewrite ANY HINFO
+    loadbalance
+}
+`
+	ex, _, udp, err := Server(t, corefile)
+	if err != nil {
+		t.Fatalf("Could get server: %s", err)
+	}
+	defer ex.Stop()
+
+	log.SetOutput(ioutil.Discard)
+	c := new(dns.Client)
+	m := new(dns.Msg)
+	m.SetQuestion("example.org.", dns.TypeA)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		c.Exchange(m, udp)
+	}
+}

test/proxy_test.go

@@ -3,7 +3,6 @@ package test
 import (
 	"io/ioutil"
 	"log"
-	"os"
 	"testing"
 
 	"github.com/miekg/coredns/middleware"
@@ -18,6 +17,7 @@ example.org.		IN	SOA	sns.dns.icann.org. noc.dns.icann.org. 2015082541 7200 3600
 example.org.		IN	NS	b.iana-servers.net.
 example.org.		IN	NS	a.iana-servers.net.
 example.org.		IN	A	127.0.0.1
+example.org.		IN	A	127.0.0.2
 `
 
 func TestLookupProxy(t *testing.T) {
@@ -38,7 +38,6 @@ func TestLookupProxy(t *testing.T) {
 	defer ex.Stop()
 
 	log.SetOutput(ioutil.Discard)
-	defer log.SetOutput(os.Stderr)
 
 	p := proxy.New([]string{udp})
 	state := middleware.State{W: &test.ResponseWriter{}, Req: new(dns.Msg)}