middleware/kubernetes: Server side path lookups (#750)

* initial commit

* add config options

* add readme

* rewording

* revert unlreated change

* normalize host domain path

* add ndots opt, allow > 1 host domains, pull host domains from resolv.conf

* implementing review feedback

* update readme

* use dns lib, config format, defaults

* Correct autopath example.

1 files changed, 24 insertions, 0 deletions

diff --git a/middleware/kubernetes/kubernetes_test.go b/middleware/kubernetes/kubernetes_test.go
index 2003513a4..8449101a5 100644
--- a/middleware/kubernetes/kubernetes_test.go
+++ b/middleware/kubernetes/kubernetes_test.go
@@ -480,3 +480,27 @@ func TestServices(t *testing.T) {
 	}
 
 }
+
+func TestSplitSearchPath(t *testing.T) {
+	type testCase struct {
+		question       string
+		namespace      string
+		expectedName   string
+		expectedSearch string
+		expectedOk     bool
+	}
+	tests := []testCase{
+		{question: "test.blah.com", namespace: "ns1", expectedName: "", expectedSearch: "", expectedOk: false},
+		{question: "foo.com.ns2.svc.interwebs.nets", namespace: "ns1", expectedName: "", expectedSearch: "", expectedOk: false},
+		{question: "foo.com.svc.interwebs.nets", namespace: "ns1", expectedName: "", expectedSearch: "", expectedOk: false},
+		{question: "foo.com.ns1.svc.interwebs.nets", namespace: "ns1", expectedName: "foo.com", expectedSearch: "ns1.svc.interwebs.nets", expectedOk: true},
+	}
+	zone := "interwebs.nets"
+	for _, c := range tests {
+		name, search, ok := splitSearch(zone, c.question, c.namespace)
+		if c.expectedName != name || c.expectedSearch != search || c.expectedOk != ok {
+			t.Errorf("Case %v: Expected name'%v', search:'%v', ok:'%v'. Got name:'%v', search:'%v', ok:'%v'.", c.question, c.expectedName, c.expectedSearch, c.expectedOk, name, search, ok)
+		}
+	}
+
+}