Move core api to pkg/apis/core

pkg/apis/core/json.go

@@ -0,0 +1,28 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package api
+
+import "encoding/json"
+
+// This file implements json marshaling/unmarshaling interfaces on objects that are currently marshaled into annotations
+// to prevent anyone from marshaling these internal structs.
+
+var _ = json.Marshaler(&AvoidPods{})
+var _ = json.Unmarshaler(&AvoidPods{})
+
+func (AvoidPods) MarshalJSON() ([]byte, error) { panic("do not marshal internal struct") }
+func (*AvoidPods) UnmarshalJSON([]byte) error  { panic("do not unmarshal to internal struct") }