Remove grpc watch functionality (#2549)

This was added, but didn't see any use. For a large, complex chunk of
code we should have some users of it.

Remove all watch functionally from plugins, servers and packages.

Fixes: #2548

Signed-off-by: Miek Gieben <miek@miek.nl>

1 files changed, 0 insertions, 53 deletions

diff --git a/plugin/kubernetes/watch_test.go b/plugin/kubernetes/watch_test.go
deleted file mode 100644
index 08eda894b..000000000
--- a/plugin/kubernetes/watch_test.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package kubernetes
-
-import (
-	"strconv"
-	"strings"
-	"testing"
-
-	"github.com/coredns/coredns/plugin/kubernetes/object"
-)
-
-func endpointSubsets(addrs ...string) (eps []object.EndpointSubset) {
-	for _, ap := range addrs {
-		apa := strings.Split(ap, ":")
-		address := apa[0]
-		port, _ := strconv.Atoi(apa[1])
-		eps = append(eps, object.EndpointSubset{Addresses: []object.EndpointAddress{{IP: address}}, Ports: []object.EndpointPort{{Port: int32(port)}}})
-	}
-	return eps
-}
-
-func TestEndpointsSubsetDiffs(t *testing.T) {
-	var tests = []struct {
-		a, b, expected object.Endpoints
-	}{
-		{ // From a->b: Nothing changes
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80", "10.0.0.2:8080")},
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80", "10.0.0.2:8080")},
-			object.Endpoints{},
-		},
-		{ // From a->b: Everything goes away
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80", "10.0.0.2:8080")},
-			object.Endpoints{},
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80", "10.0.0.2:8080")},
-		},
-		{ // From a->b: Everything is new
-			object.Endpoints{},
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80", "10.0.0.2:8080")},
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80", "10.0.0.2:8080")},
-		},
-		{ // From a->b: One goes away, one is new
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.2:8080")},
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.1:80")},
-			object.Endpoints{Subsets: endpointSubsets("10.0.0.2:8080", "10.0.0.1:80")},
-		},
-	}
-
-	for i, te := range tests {
-		got := endpointsSubsetDiffs(&te.a, &te.b)
-		if !endpointsEquivalent(got, &te.expected) {
-			t.Errorf("Expected '%v' for test %v, got '%v'.", te.expected, i, got)
-		}
-	}
-}