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mw/kubernetes: Rewrite parseRequest and Readability improvements (#939)

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* mw/kubernetes: rewrite parseRequest

Stop looking at the qtype in parseRequest and make k.Namespace a map.
Fallout from this is that pkg/strings as it is not used anymore. Also
add a few helper functions to make unexposed namespaces easier to see in
the code.

Add wildcard tests to the middleware tests.

* Fix tests

Add a whole bunch of comments to document what we are trying to do.

* This is now answered

* up coverage

* duh

* Update testcase

* Make it nodata
This commit is contained in:
Miek Gieben 2017-08-22 20:44:42 +01:00 • committed by Yong Tang
parent 60d5e71a1a
commit 6a4e69eb9f
9 changed files with 189 additions and 168 deletions
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47
middleware/kubernetes/handler_test.go
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@ -19,12 +19,37 @@ var dnsTestCases = map[string](test.Case){
test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1"),
},
},
"A Service (Headless)": {
Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
"A Service (wildcard)": {
Qname: "svc1.*.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.2"),
test.A("hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.3"),
test.A("svc1.*.svc.cluster.local. 0 IN A 10.0.0.1"),
},
},
"SRV Service (wildcard)": {
Qname: "svc1.*.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("svc1.*.svc.cluster.local. 0 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1")},
},
"SRV Service (wildcards)": {
Qname: "*.any.svc1.*.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("*.any.svc1.*.svc.cluster.local. 0 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1")},
},
"A Service (wildcards)": {
Qname: "*.any.svc1.*.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("*.any.svc1.*.svc.cluster.local. 0 IN A 10.0.0.1"),
},
},
"SRV Service Not udp/tcp": {
Qname: "*._not-udp-or-tcp.svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
},
},
"SRV Service": {
@ -37,6 +62,14 @@ var dnsTestCases = map[string](test.Case){
test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1"),
},
},
"A Service (Headless)": {
Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.2"),
test.A("hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.3"),
},
},
"SRV Service (Headless)": {
Qname: "_http._tcp.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
@ -49,7 +82,6 @@ var dnsTestCases = map[string](test.Case){
test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.3"),
},
},
// TODO A External
"CNAME External": {
Qname: "external.testns.svc.cluster.local.", Qtype: dns.TypeCNAME,
Rcode: dns.RcodeSuccess,
@ -153,13 +185,12 @@ func TestServeDNS(t *testing.T) {
ctx := context.TODO()
runServeDNSTests(ctx, t, dnsTestCases, k)
//Set PodMode to Disabled
k.PodMode = PodModeDisabled
runServeDNSTests(ctx, t, podModeDisabledCases, k)
//Set PodMode to Insecure
k.PodMode = PodModeInsecure
runServeDNSTests(ctx, t, podModeInsecureCases, k)
//Set PodMode to Verified
k.PodMode = PodModeVerified
runServeDNSTests(ctx, t, podModeVerifiedCases, k)
}