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7078f1576f4683aa851ff82a9b0e2084bbee4522
coredns/plugin/kubernetes/handler_test.go
miles-to-go 92b7e658e3 add client labels to k8s plugin metadata (#6475) 
Signed-off-by: Nolan Miles <nolanpmiles@gmail.com>
2024-03-07 14:34:09 -05:00

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package kubernetes
import (
"context"
"fmt"
"testing"
"github.com/coredns/coredns/plugin/kubernetes/object"
"github.com/coredns/coredns/plugin/pkg/dnstest"
"github.com/coredns/coredns/plugin/test"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
api "k8s.io/api/core/v1"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type kubeTestCase struct {
Upstream Upstreamer
Truncated bool
test.Case
}
var dnsTestCases = []kubeTestCase{
// A Service
{Case: test.Case{
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
}},
{Case: test.Case{
Qname: "svcempty.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("svcempty.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
}},
{Case: test.Case{
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1")},
}},
{Case: test.Case{
Qname: "svcempty.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("svcempty.testns.svc.cluster.local. 5 IN SRV 0 100 80 svcempty.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svcempty.testns.svc.cluster.local. 5 IN A 10.0.0.1")},
}},
{Case: test.Case{
Qname: "svc6.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local.")},
Extra: []dns.RR{test.AAAA("svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1")},
}},
// SRV Service
{Case: test.Case{
Qname: "_http._tcp.svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.SRV("_http._tcp.svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local."),
},
Extra: []dns.RR{
test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
}},
{Case: test.Case{
Qname: "_http._tcp.svcempty.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.SRV("_http._tcp.svcempty.testns.svc.cluster.local. 5 IN SRV 0 100 80 svcempty.testns.svc.cluster.local."),
},
Extra: []dns.RR{
test.A("svcempty.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
}},
// A Service (Headless)
{Case: test.Case{
Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4"),
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5"),
},
}},
// A Service (Headless and Portless)
{Case: test.Case{
Qname: "hdlsprtls.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("hdlsprtls.testns.svc.cluster.local. 5 IN A 172.0.0.20"),
},
}},
// An Endpoint with no port
{Case: test.Case{
Qname: "172-0-0-20.hdlsprtls.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("172-0-0-20.hdlsprtls.testns.svc.cluster.local. 5 IN A 172.0.0.20"),
},
}},
// An Endpoint ip
{Case: test.Case{
Qname: "172-0-0-2.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("172-0-0-2.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
},
}},
// A Endpoint ip
{Case: test.Case{
Qname: "172-0-0-3.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
},
}},
// An Endpoint by name
{Case: test.Case{
Qname: "dup-name.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4"),
test.A("dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5"),
},
}},
// SRV Service (Headless)
{Case: test.Case{
Qname: "_http._tcp.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 172-0-0-2.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 172-0-0-3.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 5678-abcd--1.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 5678-abcd--2.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.cluster.local."),
},
Extra: []dns.RR{
test.A("172-0-0-2.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
test.AAAA("5678-abcd--1.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1"),
test.AAAA("5678-abcd--2.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2"),
test.A("dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4"),
test.A("dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5"),
},
}},
{Case: test.Case{ // An A record query for an existing headless service should return a record for each of its ipv4 endpoints
Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4"),
test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5"),
},
}},
// AAAA
{Case: test.Case{
Qname: "5678-abcd--2.hdls1.testns.svc.cluster.local", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.AAAA("5678-abcd--2.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2")},
}},
// CNAME External
{Case: test.Case{
Qname: "external.testns.svc.cluster.local.", Qtype: dns.TypeCNAME,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.CNAME("external.testns.svc.cluster.local. 5 IN CNAME ext.interwebs.test."),
},
}},
// CNAME External Truncated Lookup
{
Case: test.Case{
Qname: "external.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("ext.interwebs.test. 5 IN A 1.2.3.4"),
test.CNAME("external.testns.svc.cluster.local. 5 IN CNAME ext.interwebs.test."),
},
},
Upstream: &Upstub{
Truncated: true,
Qclass: dns.ClassINET,
Case: test.Case{
Qname: "external.testns.svc.cluster.local.",
Qtype: dns.TypeA,
Answer: []dns.RR{
test.A("ext.interwebs.test. 5 IN A 1.2.3.4"),
test.CNAME("external.testns.svc.cluster.local. 5 IN CNAME ext.interwebs.test."),
},
},
},
Truncated: true,
},
// CNAME External To Internal Service
{Case: test.Case{
Qname: "external-to-service.testns.svc.cluster.local", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.CNAME("external-to-service.testns.svc.cluster.local. 5 IN CNAME svc1.testns.svc.cluster.local."),
test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
}},
// AAAA Service (with an existing A record, but no AAAA record)
{Case: test.Case{
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// AAAA Service (non-existing service)
{Case: test.Case{
Qname: "svc0.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A Service (non-existing service)
{Case: test.Case{
Qname: "svc0.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A Service (non-existing namespace)
{Case: test.Case{
Qname: "svc0.svc-nons.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// TXT Schema
{Case: test.Case{
Qname: "dns-version.cluster.local.", Qtype: dns.TypeTXT,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.TXT("dns-version.cluster.local 28800 IN TXT 1.1.0"),
},
}},
// A TXT record does not exist but another record for the same FQDN does
{Case: test.Case{
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeTXT,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A TXT record does not exist and neither does another record for the same FQDN
{Case: test.Case{
Qname: "svc0.svc-nons.svc.cluster.local.", Qtype: dns.TypeTXT,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A Service (Headless) does not exist
{Case: test.Case{
Qname: "bogusendpoint.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A Service does not exist
{Case: test.Case{
Qname: "bogusendpoint.svc0.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// AAAA Service
{Case: test.Case{
Qname: "svc6.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.AAAA("svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1"),
},
}},
// SRV
{Case: test.Case{
Qname: "_http._tcp.svc6.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.SRV("_http._tcp.svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local."),
},
Extra: []dns.RR{
test.AAAA("svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1"),
},
}},
// AAAA Service (Headless)
{Case: test.Case{
Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.AAAA("hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1"),
test.AAAA("hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2"),
},
}},
// AAAA Endpoint
{Case: test.Case{
Qname: "5678-abcd--1.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.AAAA("5678-abcd--1.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1"),
},
}},
{Case: test.Case{
Qname: "svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
{Case: test.Case{
Qname: "pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
{Case: test.Case{
Qname: "testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// NS query for qname != zone (existing domain)
{Case: test.Case{
Qname: "svc.cluster.local.", Qtype: dns.TypeNS,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// NS query for qname != zone (existing domain)
{Case: test.Case{
Qname: "testns.svc.cluster.local.", Qtype: dns.TypeNS,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// NS query for qname != zone (non existing domain)
{Case: test.Case{
Qname: "foo.cluster.local.", Qtype: dns.TypeNS,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// NS query for qname != zone (non existing domain)
{Case: test.Case{
Qname: "foo.svc.cluster.local.", Qtype: dns.TypeNS,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// Dual Stack ClusterIP Services
{Case: test.Case{
Qname: "svc-dual-stack.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("svc-dual-stack.testns.svc.cluster.local. 5 IN A 10.0.0.3"),
},
}},
{Case: test.Case{
Qname: "svc-dual-stack.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.AAAA("svc-dual-stack.testns.svc.cluster.local. 5 IN AAAA 10::3"),
},
}},
{Case: test.Case{
Qname: "svc-dual-stack.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("svc-dual-stack.testns.svc.cluster.local. 5 IN SRV 0 50 80 svc-dual-stack.testns.svc.cluster.local.")},
Extra: []dns.RR{
test.A("svc-dual-stack.testns.svc.cluster.local. 5 IN A 10.0.0.3"),
test.AAAA("svc-dual-stack.testns.svc.cluster.local. 5 IN AAAA 10::3"),
},
}},
{Case: test.Case{
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeSOA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A query for a subdomain of an external service should not resolve to the external service
{Case: test.Case{
Qname: "endpoint.external.testns.svc.cluster.local.", Qtype: dns.TypeCNAME,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
// A query for a subdomain of a subdomain of an external service should not resolve to the external service
{Case: test.Case{
Qname: "subdomain.subdomain.external.testns.svc.cluster.local.", Qtype: dns.TypeCNAME,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
}},
}
func TestServeDNS(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &APIConnServeTest{}
k.Next = test.NextHandler(dns.RcodeSuccess, nil)
k.Namespaces = map[string]struct{}{"testns": {}}
ctx := context.TODO()
for i, tc := range dnsTestCases {
k.Upstream = tc.Upstream
r := tc.Msg()
w := dnstest.NewRecorder(&test.ResponseWriter{})
_, err := k.ServeDNS(ctx, w, r)
if err != tc.Error {
t.Errorf("Test %d expected no error, got %v", i, err)
return
}
if tc.Error != nil {
continue
}
resp := w.Msg
if resp == nil {
t.Fatalf("Test %d, got nil message and no error for %q", i, r.Question[0].Name)
}
if tc.Truncated != resp.Truncated {
t.Errorf("Expected truncation %t, got truncation %t", tc.Truncated, resp.Truncated)
}
// Before sorting, make sure that CNAMES do not appear after their target records
if err := test.CNAMEOrder(resp); err != nil {
t.Errorf("Test %d, %v", i, err)
}
if err := test.SortAndCheck(resp, tc.Case); err != nil {
t.Errorf("Test %d, %v", i, err)
}
}
}
var nsTestCases = []test.Case{
// A Service for an "exposed" namespace that "does exist"
{
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
},
// A service for an "exposed" namespace that "doesn't exist"
{
Qname: "svc1.nsnoexist.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1551484803 7200 1800 86400 30"),
},
},
}
func TestServeNamespaceDNS(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &APIConnServeTest{}
k.Next = test.NextHandler(dns.RcodeSuccess, nil)
// if no namespaces are explicitly exposed, then they are all implicitly exposed
k.Namespaces = map[string]struct{}{}
ctx := context.TODO()
for i, tc := range nsTestCases {
r := tc.Msg()
w := dnstest.NewRecorder(&test.ResponseWriter{})
_, err := k.ServeDNS(ctx, w, r)
if err != tc.Error {
t.Errorf("Test %d expected no error, got %v", i, err)
return
}
if tc.Error != nil {
continue
}
resp := w.Msg
if resp == nil {
t.Fatalf("Test %d, got nil message and no error for %q", i, r.Question[0].Name)
}
// Before sorting, make sure that CNAMES do not appear after their target records
test.CNAMEOrder(resp)
test.SortAndCheck(resp, tc)
}
}
var notSyncedTestCases = []test.Case{
{
// We should get ServerFailure instead of NameError for missing records when we kubernetes hasn't synced
Qname: "svc0.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeServerFailure,
Ns: []dns.RR{
test.SOA("cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 5"),
},
},
}
func TestNotSyncedServeDNS(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &APIConnServeTest{
notSynced: true,
}
k.Next = test.NextHandler(dns.RcodeSuccess, nil)
k.Namespaces = map[string]struct{}{"testns": {}}
ctx := context.TODO()
for i, tc := range notSyncedTestCases {
r := tc.Msg()
w := dnstest.NewRecorder(&test.ResponseWriter{})
_, err := k.ServeDNS(ctx, w, r)
if err != tc.Error {
t.Errorf("Test %d expected no error, got %v", i, err)
return
}
if tc.Error != nil {
continue
}
resp := w.Msg
if resp == nil {
t.Fatalf("Test %d, got nil message and no error for %q", i, r.Question[0].Name)
}
if err := test.CNAMEOrder(resp); err != nil {
t.Error(err)
}
if err := test.SortAndCheck(resp, tc); err != nil {
t.Error(err)
}
}
}
type APIConnServeTest struct {
notSynced bool
}
func (a APIConnServeTest) HasSynced() bool { return !a.notSynced }
func (APIConnServeTest) Run() {}
func (APIConnServeTest) Stop() error { return nil }
func (APIConnServeTest) EpIndexReverse(string) []*object.Endpoints { return nil }
func (APIConnServeTest) SvcIndexReverse(string) []*object.Service { return nil }
func (APIConnServeTest) SvcExtIndexReverse(string) []*object.Service { return nil }
func (APIConnServeTest) Modified(bool) int64 { return int64(3) }
func (APIConnServeTest) PodIndex(ip string) []*object.Pod {
if ip != "10.240.0.1" {
return []*object.Pod{}
}
a := []*object.Pod{
{
Namespace: "podns", Name: "foo", PodIP: "10.240.0.1",
Labels: map[string]string{
"app.kubernetes.io/name": "foo",
"bar": "baz",
},
}, // Remote IP set in test.ResponseWriter
}
return a
}
var svcIndex = map[string][]*object.Service{
"kubedns.kube-system": {
{
Name: "kubedns",
Namespace: "kube-system",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.10"},
Ports: []api.ServicePort{
{Name: "dns", Protocol: "udp", Port: 53},
},
},
},
"svc1.testns": {
{
Name: "svc1",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.1"},
Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
"svcempty.testns": {
{
Name: "svcempty",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.1"},
Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
"svc6.testns": {
{
Name: "svc6",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"1234:abcd::1"},
Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
"hdls1.testns": {
{
Name: "hdls1",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{api.ClusterIPNone},
},
},
"external.testns": {
{
Name: "external",
Namespace: "testns",
ExternalName: "ext.interwebs.test",
Type: api.ServiceTypeExternalName,
Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
"external-to-service.testns": {
{
Name: "external-to-service",
Namespace: "testns",
ExternalName: "svc1.testns.svc.cluster.local.",
Type: api.ServiceTypeExternalName,
Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
"hdlsprtls.testns": {
{
Name: "hdlsprtls",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{api.ClusterIPNone},
},
},
"svc1.unexposedns": {
{
Name: "svc1",
Namespace: "unexposedns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.2"},
Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
"svc-dual-stack.testns": {
{
Name: "svc-dual-stack",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.3", "10::3"}, Ports: []api.ServicePort{
{Name: "http", Protocol: "tcp", Port: 80},
},
},
},
}
func (APIConnServeTest) SvcIndex(s string) []*object.Service { return svcIndex[s] }
func (APIConnServeTest) ServiceList() []*object.Service {
var svcs []*object.Service
for _, svc := range svcIndex {
svcs = append(svcs, svc...)
}
return svcs
}
var epsIndex = map[string][]*object.Endpoints{
"kubedns.kube-system": {{
Subsets: []object.EndpointSubset{
{
Addresses: []object.EndpointAddress{
{IP: "172.0.0.100"},
},
Ports: []object.EndpointPort{
{Port: 53, Protocol: "udp", Name: "dns"},
},
},
},
Name: "kubedns",
Namespace: "kube-system",
Index: object.EndpointsKey("kubedns", "kube-system"),
}},
"svc1.testns": {{
Subsets: []object.EndpointSubset{
{
Addresses: []object.EndpointAddress{
{IP: "172.0.0.1", Hostname: "ep1a"},
},
Ports: []object.EndpointPort{
{Port: 80, Protocol: "tcp", Name: "http"},
},
},
},
Name: "svc1-slice1",
Namespace: "testns",
Index: object.EndpointsKey("svc1", "testns"),
}},
"svcempty.testns": {{
Subsets: []object.EndpointSubset{
{
Addresses: nil,
Ports: []object.EndpointPort{
{Port: 80, Protocol: "tcp", Name: "http"},
},
},
},
Name: "svcempty-slice1",
Namespace: "testns",
Index: object.EndpointsKey("svcempty", "testns"),
}},
"hdls1.testns": {{
Subsets: []object.EndpointSubset{
{
Addresses: []object.EndpointAddress{
{IP: "172.0.0.2"},
{IP: "172.0.0.3"},
{IP: "172.0.0.4", Hostname: "dup-name"},
{IP: "172.0.0.5", Hostname: "dup-name"},
{IP: "5678:abcd::1"},
{IP: "5678:abcd::2"},
},
Ports: []object.EndpointPort{
{Port: 80, Protocol: "tcp", Name: "http"},
},
},
},
Name: "hdls1-slice1",
Namespace: "testns",
Index: object.EndpointsKey("hdls1", "testns"),
}},
"hdlsprtls.testns": {{
Subsets: []object.EndpointSubset{
{
Addresses: []object.EndpointAddress{
{IP: "172.0.0.20"},
},
Ports: []object.EndpointPort{{Port: -1}},
},
},
Name: "hdlsprtls-slice1",
Namespace: "testns",
Index: object.EndpointsKey("hdlsprtls", "testns"),
}},
}
func (APIConnServeTest) EpIndex(s string) []*object.Endpoints {
return epsIndex[s]
}
func (APIConnServeTest) EndpointsList() []*object.Endpoints {
var eps []*object.Endpoints
for _, ep := range epsIndex {
eps = append(eps, ep...)
}
return eps
}
func (APIConnServeTest) GetNodeByName(ctx context.Context, name string) (*api.Node, error) {
return &api.Node{
ObjectMeta: meta.ObjectMeta{
Name: "test.node.foo.bar",
},
}, nil
}
func (APIConnServeTest) GetNamespaceByName(name string) (*object.Namespace, error) {
if name == "pod-nons" { // handler_pod_verified_test.go uses this for non-existent namespace.
return nil, fmt.Errorf("namespace not found")
}
if name == "nsnoexist" {
return nil, fmt.Errorf("namespace not found")
}
return &object.Namespace{
Name: name,
}, nil
}
// Upstub implements an Upstreamer that returns a set response for test purposes
type Upstub struct {
test.Case
Truncated bool
Qclass uint16
}
// Lookup returns a set response
func (t *Upstub) Lookup(ctx context.Context, state request.Request, name string, typ uint16) (*dns.Msg, error) {
var answer []dns.RR
// if query type is not CNAME, remove any CNAME with same name as qname from the answer
if t.Qtype != dns.TypeCNAME {
for _, a := range t.Answer {
if c, ok := a.(*dns.CNAME); ok && c.Header().Name == t.Qname {
continue
}
answer = append(answer, a)
}
} else {
answer = t.Answer
}
return &dns.Msg{
MsgHdr: dns.MsgHdr{
Response: true,
Truncated: t.Truncated,
Rcode: t.Rcode,
},
Question: []dns.Question{{Name: t.Qname, Qtype: t.Qtype, Qclass: t.Qclass}},
Answer: answer,
Extra: t.Extra,
Ns: t.Ns,
}, nil
}
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