Merge pull request #97 from DataDog/david.benque/label-filter-fix

fix label key expression formating

Author: jacobstr

internal/kubernetes/nodefilters.go

@@ -122,7 +122,7 @@ func ConvertLabelsToFilterExpr(labels map[string]string) *string {
 		if k != "" && labels[k] == "" {
 			res = append(res, fmt.Sprintf(`'%s' in metadata.labels`, k))
 		} else {
-			res = append(res, fmt.Sprintf(`metadata.labels.%s == '%s'`, k, labels[k]))
+			res = append(res, fmt.Sprintf(`metadata.labels['%s'] == '%s'`, k, labels[k]))
 		}
 	}
 	temp := strings.Join(res, " && ")

internal/kubernetes/nodefilters_test.go

@@ -234,6 +234,17 @@ func TestOldNodeLabelFilter(t *testing.T) {
 			labels:       map[string]string{"cool": "very"},
 			passesFilter: true,
 		},
+		{
+			name: "SingleMatchingLabel.WithDomain",
+			obj: &core.Node{
+				ObjectMeta: meta.ObjectMeta{
+					Name:   nodeName,
+					Labels: map[string]string{"planetlabs.com/cool": "very"},
+				},
+			},
+			labels:       map[string]string{"planetlabs.com/cool": "very"},
+			passesFilter: true,
+		},
 		{
 			name: "ManyMatchingLabels",
 			obj: &core.Node{
@@ -431,7 +442,7 @@ func TestConvertLabelsToFilterExpr(t *testing.T) {
 		"sup": "cool",
 	}
 
-	desired := "metadata.labels.foo == 'bar' && metadata.labels.sup == 'cool'"
+	desired := "metadata.labels['foo'] == 'bar' && metadata.labels['sup'] == 'cool'"
 	actual := ConvertLabelsToFilterExpr(input)
 
 	assert.Equal(t, desired, *actual)