[ONOS-4513] Move utilities not specific to optical out of optical package.
Change-Id: Ib4d33008c61f17b8ff220142a0d15db31e5fcfb9
diff --git a/core/api/src/main/java/org/onosproject/net/utils/ForwardingDeviceService.java b/core/api/src/main/java/org/onosproject/net/utils/ForwardingDeviceService.java
new file mode 100644
index 0000000..91885ba
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/utils/ForwardingDeviceService.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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 org.onosproject.net.utils;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.List;
+
+import org.onosproject.net.Device;
+import org.onosproject.net.Device.Type;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.MastershipRole;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.device.DeviceListener;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.device.PortStatistics;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * A DeviceService which forwards all its method calls to another DeviceService.
+ */
+@Beta
+public abstract class ForwardingDeviceService implements DeviceService {
+
+ private final DeviceService delegate;
+
+ protected ForwardingDeviceService(DeviceService delegate) {
+ this.delegate = checkNotNull(delegate);
+ }
+
+ protected final DeviceService delegate() {
+ return delegate;
+ }
+
+ @Override
+ public void addListener(DeviceListener listener) {
+ delegate.addListener(listener);
+ }
+
+ @Override
+ public void removeListener(DeviceListener listener) {
+ delegate.removeListener(listener);
+ }
+
+ @Override
+ public int getDeviceCount() {
+ return delegate.getDeviceCount();
+ }
+
+ @Override
+ public Iterable<Device> getDevices() {
+ return delegate.getDevices();
+ }
+
+ @Override
+ public Iterable<Device> getDevices(Type type) {
+ return delegate.getDevices(type);
+ }
+
+ @Override
+ public Iterable<Device> getAvailableDevices() {
+ return delegate.getAvailableDevices();
+ }
+
+ @Override
+ public Iterable<Device> getAvailableDevices(Type type) {
+ return delegate.getAvailableDevices(type);
+ }
+
+ @Override
+ public Device getDevice(DeviceId deviceId) {
+ return delegate.getDevice(deviceId);
+ }
+
+ @Override
+ public MastershipRole getRole(DeviceId deviceId) {
+ return delegate.getRole(deviceId);
+ }
+
+ @Override
+ public List<Port> getPorts(DeviceId deviceId) {
+ return delegate.getPorts(deviceId);
+ }
+
+ @Override
+ public List<PortStatistics> getPortStatistics(DeviceId deviceId) {
+ return delegate.getPortStatistics(deviceId);
+ }
+
+ @Override
+ public List<PortStatistics> getPortDeltaStatistics(DeviceId deviceId) {
+ return delegate.getPortDeltaStatistics(deviceId);
+ }
+
+ @Override
+ public Port getPort(DeviceId deviceId, PortNumber portNumber) {
+ return delegate.getPort(deviceId, portNumber);
+ }
+
+ @Override
+ public boolean isAvailable(DeviceId deviceId) {
+ return delegate.isAvailable(deviceId);
+ }
+
+}