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/*
* Copyright 2015 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.newresource.impl;
import org.onosproject.net.Device;
import org.onosproject.net.Port;
import org.onosproject.net.device.DeviceEvent;
import org.onosproject.net.device.DeviceListener;
import org.onosproject.net.newresource.ResourceAdminService;
import org.onosproject.net.newresource.ResourcePath;
import java.util.concurrent.ExecutorService;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* An implementation of DeviceListener registering devices as resources.
*/
final class ResourceDeviceListener implements DeviceListener {
private final ResourceAdminService adminService;
private final ExecutorService executor;
/**
* Creates an instance with the specified ResourceAdminService and ExecutorService.
*
* @param adminService instance invoked to register resources
* @param executor executor used for processing resource registration
*/
ResourceDeviceListener(ResourceAdminService adminService, ExecutorService executor) {
this.adminService = checkNotNull(adminService);
this.executor = checkNotNull(executor);
}
@Override
public void event(DeviceEvent event) {
Device device = event.subject();
switch (event.type()) {
case DEVICE_ADDED:
registerDeviceResource(device);
break;
case DEVICE_REMOVED:
unregisterDeviceResource(device);
break;
case PORT_ADDED:
registerPortResource(device, event.port());
break;
case PORT_REMOVED:
unregisterPortResource(device, event.port());
break;
default:
break;
}
}
private void registerDeviceResource(Device device) {
executor.submit(() -> adminService.registerResources(ResourcePath.ROOT, device.id()));
}
private void unregisterDeviceResource(Device device) {
executor.submit(() -> adminService.unregisterResources(ResourcePath.ROOT, device.id()));
}
private void registerPortResource(Device device, Port port) {
ResourcePath parent = ResourcePath.discrete(device.id());
executor.submit(() -> adminService.registerResources(parent, port.number()));
}
private void unregisterPortResource(Device device, Port port) {
ResourcePath parent = ResourcePath.discrete(device.id());
executor.submit(() -> adminService.unregisterResources(parent, port.number()));
}
}
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