Controller crud for Watch type

Controller and client crud, API routes, and a unit test for the Watch
type.

controller/watchStore.go

@@ -0,0 +1,79 @@
+/*
+Copyright 2016 The Fission 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 controller
+
+import (
+	"github.com/satori/go.uuid"
+
+	"github.com/platform9/fission"
+)
+
+type WatchStore struct {
+	ResourceStore
+}
+
+func (ws *WatchStore) Create(w *fission.Watch) (string, error) {
+	w.Metadata.Uid = uuid.NewV4().String()
+	return w.Metadata.Uid, ws.ResourceStore.create(w)
+}
+
+func (ws *WatchStore) Get(m *fission.Metadata) (*fission.Watch, error) {
+	var w fission.Watch
+	err := ws.ResourceStore.read(m.Name, &w)
+	if err != nil {
+		return nil, err
+	}
+	return &w, err
+}
+
+func (ws *WatchStore) Update(w *fission.Watch) (string, error) {
+	w.Metadata.Uid = uuid.NewV4().String()
+	return w.Metadata.Uid, ws.ResourceStore.update(w)
+}
+
+func (ws *WatchStore) Delete(m fission.Metadata) error {
+	typeName, err := getTypeName(fission.Watch{})
+	if err != nil {
+		return err
+	}
+	return ws.ResourceStore.delete(typeName, m.Name)
+}
+
+func (ws *WatchStore) List() ([]fission.Watch, error) {
+	typeName, err := getTypeName(fission.Watch{})
+	if err != nil {
+		return nil, err
+	}
+
+	bufs, err := ws.ResourceStore.getAll(typeName)
+	if err != nil {
+		return nil, err
+	}
+
+	watches := make([]fission.Watch, 0, len(bufs))
+	js := JsonSerializer{}
+	for _, buf := range bufs {
+		var w fission.Watch
+		err = js.deserialize([]byte(buf), &w)
+		if err != nil {
+			return nil, err
+		}
+		watches = append(watches, w)
+	}
+
+	return watches, nil
+}