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-rw-r--r--plugin/cache/cache_test.go251
1 files changed, 251 insertions, 0 deletions
diff --git a/plugin/cache/cache_test.go b/plugin/cache/cache_test.go
new file mode 100644
index 000000000..ad23f4d5a
--- /dev/null
+++ b/plugin/cache/cache_test.go
@@ -0,0 +1,251 @@
+package cache
+
+import (
+ "io/ioutil"
+ "log"
+ "testing"
+ "time"
+
+ "golang.org/x/net/context"
+
+ "github.com/coredns/coredns/plugin"
+ "github.com/coredns/coredns/plugin/pkg/cache"
+ "github.com/coredns/coredns/plugin/pkg/response"
+ "github.com/coredns/coredns/plugin/test"
+
+ "github.com/miekg/dns"
+)
+
+type cacheTestCase struct {
+ test.Case
+ in test.Case
+ AuthenticatedData bool
+ Authoritative bool
+ RecursionAvailable bool
+ Truncated bool
+ shouldCache bool
+}
+
+var cacheTestCases = []cacheTestCase{
+ {
+ RecursionAvailable: true, AuthenticatedData: true, Authoritative: true,
+ Case: test.Case{
+ Qname: "miek.nl.", Qtype: dns.TypeMX,
+ Answer: []dns.RR{
+ test.MX("miek.nl. 3600 IN MX 1 aspmx.l.google.com."),
+ test.MX("miek.nl. 3600 IN MX 10 aspmx2.googlemail.com."),
+ },
+ },
+ in: test.Case{
+ Qname: "miek.nl.", Qtype: dns.TypeMX,
+ Answer: []dns.RR{
+ test.MX("miek.nl. 3601 IN MX 1 aspmx.l.google.com."),
+ test.MX("miek.nl. 3601 IN MX 10 aspmx2.googlemail.com."),
+ },
+ },
+ shouldCache: true,
+ },
+ {
+ RecursionAvailable: true, AuthenticatedData: true, Authoritative: true,
+ Case: test.Case{
+ Qname: "mIEK.nL.", Qtype: dns.TypeMX,
+ Answer: []dns.RR{
+ test.MX("mIEK.nL. 3600 IN MX 1 aspmx.l.google.com."),
+ test.MX("mIEK.nL. 3600 IN MX 10 aspmx2.googlemail.com."),
+ },
+ },
+ in: test.Case{
+ Qname: "mIEK.nL.", Qtype: dns.TypeMX,
+ Answer: []dns.RR{
+ test.MX("mIEK.nL. 3601 IN MX 1 aspmx.l.google.com."),
+ test.MX("mIEK.nL. 3601 IN MX 10 aspmx2.googlemail.com."),
+ },
+ },
+ shouldCache: true,
+ },
+ {
+ Truncated: true,
+ Case: test.Case{
+ Qname: "miek.nl.", Qtype: dns.TypeMX,
+ Answer: []dns.RR{test.MX("miek.nl. 1800 IN MX 1 aspmx.l.google.com.")},
+ },
+ in: test.Case{},
+ shouldCache: false,
+ },
+ {
+ RecursionAvailable: true, Authoritative: true,
+ Case: test.Case{
+ Rcode: dns.RcodeNameError,
+ Qname: "example.org.", Qtype: dns.TypeA,
+ Ns: []dns.RR{
+ test.SOA("example.org. 3600 IN SOA sns.dns.icann.org. noc.dns.icann.org. 2016082540 7200 3600 1209600 3600"),
+ },
+ },
+ in: test.Case{
+ Rcode: dns.RcodeNameError,
+ Qname: "example.org.", Qtype: dns.TypeA,
+ Ns: []dns.RR{
+ test.SOA("example.org. 3600 IN SOA sns.dns.icann.org. noc.dns.icann.org. 2016082540 7200 3600 1209600 3600"),
+ },
+ },
+ shouldCache: true,
+ },
+ {
+ RecursionAvailable: true, Authoritative: true,
+ Case: test.Case{
+ Qname: "miek.nl.", Qtype: dns.TypeMX,
+ Do: true,
+ Answer: []dns.RR{
+ test.MX("miek.nl. 3600 IN MX 1 aspmx.l.google.com."),
+ test.MX("miek.nl. 3600 IN MX 10 aspmx2.googlemail.com."),
+ test.RRSIG("miek.nl. 3600 IN RRSIG MX 8 2 1800 20160521031301 20160421031301 12051 miek.nl. lAaEzB5teQLLKyDenatmyhca7blLRg9DoGNrhe3NReBZN5C5/pMQk8Jc u25hv2fW23/SLm5IC2zaDpp2Fzgm6Jf7e90/yLcwQPuE7JjS55WMF+HE LEh7Z6AEb+Iq4BWmNhUz6gPxD4d9eRMs7EAzk13o1NYi5/JhfL6IlaYy qkc="),
+ },
+ },
+ in: test.Case{
+ Qname: "miek.nl.", Qtype: dns.TypeMX,
+ Do: true,
+ Answer: []dns.RR{
+ test.MX("miek.nl. 3600 IN MX 1 aspmx.l.google.com."),
+ test.MX("miek.nl. 3600 IN MX 10 aspmx2.googlemail.com."),
+ test.RRSIG("miek.nl. 1800 IN RRSIG MX 8 2 1800 20160521031301 20160421031301 12051 miek.nl. lAaEzB5teQLLKyDenatmyhca7blLRg9DoGNrhe3NReBZN5C5/pMQk8Jc u25hv2fW23/SLm5IC2zaDpp2Fzgm6Jf7e90/yLcwQPuE7JjS55WMF+HE LEh7Z6AEb+Iq4BWmNhUz6gPxD4d9eRMs7EAzk13o1NYi5/JhfL6IlaYy qkc="),
+ },
+ },
+ shouldCache: false,
+ },
+ {
+ RecursionAvailable: true, Authoritative: true,
+ Case: test.Case{
+ Qname: "example.org.", Qtype: dns.TypeMX,
+ Do: true,
+ Answer: []dns.RR{
+ test.MX("example.org. 3600 IN MX 1 aspmx.l.google.com."),
+ test.MX("example.org. 3600 IN MX 10 aspmx2.googlemail.com."),
+ test.RRSIG("example.org. 3600 IN RRSIG MX 8 2 1800 20170521031301 20170421031301 12051 miek.nl. lAaEzB5teQLLKyDenatmyhca7blLRg9DoGNrhe3NReBZN5C5/pMQk8Jc u25hv2fW23/SLm5IC2zaDpp2Fzgm6Jf7e90/yLcwQPuE7JjS55WMF+HE LEh7Z6AEb+Iq4BWmNhUz6gPxD4d9eRMs7EAzk13o1NYi5/JhfL6IlaYy qkc="),
+ },
+ },
+ in: test.Case{
+ Qname: "example.org.", Qtype: dns.TypeMX,
+ Do: true,
+ Answer: []dns.RR{
+ test.MX("example.org. 3600 IN MX 1 aspmx.l.google.com."),
+ test.MX("example.org. 3600 IN MX 10 aspmx2.googlemail.com."),
+ test.RRSIG("example.org. 1800 IN RRSIG MX 8 2 1800 20170521031301 20170421031301 12051 miek.nl. lAaEzB5teQLLKyDenatmyhca7blLRg9DoGNrhe3NReBZN5C5/pMQk8Jc u25hv2fW23/SLm5IC2zaDpp2Fzgm6Jf7e90/yLcwQPuE7JjS55WMF+HE LEh7Z6AEb+Iq4BWmNhUz6gPxD4d9eRMs7EAzk13o1NYi5/JhfL6IlaYy qkc="),
+ },
+ },
+ shouldCache: true,
+ },
+}
+
+func cacheMsg(m *dns.Msg, tc cacheTestCase) *dns.Msg {
+ m.RecursionAvailable = tc.RecursionAvailable
+ m.AuthenticatedData = tc.AuthenticatedData
+ m.Authoritative = tc.Authoritative
+ m.Rcode = tc.Rcode
+ m.Truncated = tc.Truncated
+ m.Answer = tc.in.Answer
+ m.Ns = tc.in.Ns
+ // m.Extra = tc.in.Extra don't copy Extra, because we don't care and fake EDNS0 DO with tc.Do.
+ return m
+}
+
+func newTestCache(ttl time.Duration) (*Cache, *ResponseWriter) {
+ c := &Cache{Zones: []string{"."}, pcap: defaultCap, ncap: defaultCap, pttl: ttl, nttl: ttl}
+ c.pcache = cache.New(c.pcap)
+ c.ncache = cache.New(c.ncap)
+
+ crr := &ResponseWriter{ResponseWriter: nil, Cache: c}
+ return c, crr
+}
+
+func TestCache(t *testing.T) {
+ now, _ := time.Parse(time.UnixDate, "Fri Apr 21 10:51:21 BST 2017")
+ utc := now.UTC()
+
+ c, crr := newTestCache(maxTTL)
+
+ log.SetOutput(ioutil.Discard)
+
+ for _, tc := range cacheTestCases {
+ m := tc.in.Msg()
+ m = cacheMsg(m, tc)
+ do := tc.in.Do
+
+ mt, _ := response.Typify(m, utc)
+ k := key(m, mt, do)
+
+ crr.set(m, k, mt, c.pttl)
+
+ name := plugin.Name(m.Question[0].Name).Normalize()
+ qtype := m.Question[0].Qtype
+
+ i, _ := c.get(time.Now().UTC(), name, qtype, do)
+ ok := i != nil
+
+ if ok != tc.shouldCache {
+ t.Errorf("cached message that should not have been cached: %s", name)
+ continue
+ }
+
+ if ok {
+ resp := i.toMsg(m)
+
+ if !test.Header(t, tc.Case, resp) {
+ t.Logf("%v\n", resp)
+ continue
+ }
+
+ if !test.Section(t, tc.Case, test.Answer, resp.Answer) {
+ t.Logf("%v\n", resp)
+ }
+ if !test.Section(t, tc.Case, test.Ns, resp.Ns) {
+ t.Logf("%v\n", resp)
+
+ }
+ if !test.Section(t, tc.Case, test.Extra, resp.Extra) {
+ t.Logf("%v\n", resp)
+ }
+ }
+ }
+}
+
+func BenchmarkCacheResponse(b *testing.B) {
+ c := &Cache{Zones: []string{"."}, pcap: defaultCap, ncap: defaultCap, pttl: maxTTL, nttl: maxTTL}
+ c.pcache = cache.New(c.pcap)
+ c.ncache = cache.New(c.ncap)
+ c.prefetch = 1
+ c.duration = 1 * time.Second
+ c.Next = BackendHandler()
+
+ ctx := context.TODO()
+
+ reqs := make([]*dns.Msg, 5)
+ for i, q := range []string{"example1", "example2", "a", "b", "ddd"} {
+ reqs[i] = new(dns.Msg)
+ reqs[i].SetQuestion(q+".example.org.", dns.TypeA)
+ }
+
+ b.RunParallel(func(pb *testing.PB) {
+ i := 0
+ for pb.Next() {
+ req := reqs[i]
+ c.ServeDNS(ctx, &test.ResponseWriter{}, req)
+ i++
+ i = i % 5
+ }
+ })
+}
+
+func BackendHandler() plugin.Handler {
+ return plugin.HandlerFunc(func(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
+ m := new(dns.Msg)
+ m.SetReply(r)
+ m.Response = true
+ m.RecursionAvailable = true
+
+ owner := m.Question[0].Name
+ m.Answer = []dns.RR{test.A(owner + " 303 IN A 127.0.0.53")}
+
+ w.WriteMsg(m)
+ return dns.RcodeSuccess, nil
+ })
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-26 03:42:04 +0000