/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* 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 net.floodlightcontroller.core.web;
import java.util.Collections;
import java.util.Iterator;
import net.floodlightcontroller.core.IFloodlightProviderService;
import net.floodlightcontroller.core.IOFSwitch;
import net.floodlightcontroller.util.FilterIterator;
import org.openflow.util.HexString;
import org.restlet.data.Form;
import org.restlet.data.Status;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;
/**
* Get a list of switches connected to the controller
* @author readams
*/
public class ControllerSwitchesResource extends ServerResource {
public static final String DPID_ERROR =
"Invalid Switch DPID: must be a 64-bit quantity, expressed in " +
"hex as AA:BB:CC:DD:EE:FF:00:11";
@Get("json")
public Iterator<IOFSwitch> retrieve() {
IFloodlightProviderService floodlightProvider =
(IFloodlightProviderService)getContext().getAttributes().
get(IFloodlightProviderService.class.getCanonicalName());
Long switchDPID = null;
Form form = getQuery();
String dpid = form.getFirstValue("dpid", true);
if (dpid != null) {
try {
switchDPID = HexString.toLong(dpid);
} catch (Exception e) {
setStatus(Status.CLIENT_ERROR_BAD_REQUEST, DPID_ERROR);
return null;
}
}
if (switchDPID != null) {
IOFSwitch sw =
floodlightProvider.getSwitches().get(switchDPID);
if (sw != null)
return Collections.singleton(sw).iterator();
return Collections.<IOFSwitch>emptySet().iterator();
}
final String dpidStartsWith =
form.getFirstValue("dpid__startswith", true);
Iterator<IOFSwitch> switer =
floodlightProvider.getSwitches().values().iterator();
if (dpidStartsWith != null) {
return new FilterIterator<IOFSwitch>(switer) {
@Override
protected boolean matches(IOFSwitch value) {
return value.getStringId().startsWith(dpidStartsWith);
}
};
}
return switer;
}
}