Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2011, Big Switch Networks, Inc. |
| 3 | * Originally created by David Erickson, Stanford University |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 6 | * not use this file except in compliance with the License. You may obtain |
| 7 | * a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | * License for the specific language governing permissions and limitations |
| 15 | * under the License. |
| 16 | **/ |
| 17 | |
| 18 | package net.floodlightcontroller.core.web; |
| 19 | |
| 20 | import java.util.Collections; |
| 21 | import java.util.Iterator; |
| 22 | |
| 23 | import net.floodlightcontroller.core.IFloodlightProviderService; |
| 24 | import net.floodlightcontroller.core.IOFSwitch; |
| 25 | import net.floodlightcontroller.util.FilterIterator; |
| 26 | |
| 27 | import org.openflow.util.HexString; |
| 28 | import org.restlet.data.Form; |
| 29 | import org.restlet.data.Status; |
| 30 | import org.restlet.resource.Get; |
| 31 | import org.restlet.resource.ServerResource; |
| 32 | |
| 33 | /** |
| 34 | * Get a list of switches connected to the controller |
| 35 | * @author readams |
| 36 | */ |
| 37 | public class ControllerSwitchesResource extends ServerResource { |
| 38 | public static final String DPID_ERROR = |
| 39 | "Invalid Switch DPID: must be a 64-bit quantity, expressed in " + |
| 40 | "hex as AA:BB:CC:DD:EE:FF:00:11"; |
| 41 | |
| 42 | @Get("json") |
| 43 | public Iterator<IOFSwitch> retrieve() { |
| 44 | IFloodlightProviderService floodlightProvider = |
| 45 | (IFloodlightProviderService)getContext().getAttributes(). |
| 46 | get(IFloodlightProviderService.class.getCanonicalName()); |
| 47 | |
| 48 | Long switchDPID = null; |
| 49 | |
| 50 | Form form = getQuery(); |
| 51 | String dpid = form.getFirstValue("dpid", true); |
| 52 | if (dpid != null) { |
| 53 | try { |
| 54 | switchDPID = HexString.toLong(dpid); |
| 55 | } catch (Exception e) { |
| 56 | setStatus(Status.CLIENT_ERROR_BAD_REQUEST, DPID_ERROR); |
| 57 | return null; |
| 58 | } |
| 59 | } |
| 60 | if (switchDPID != null) { |
| 61 | IOFSwitch sw = |
| 62 | floodlightProvider.getSwitches().get(switchDPID); |
| 63 | if (sw != null) |
| 64 | return Collections.singleton(sw).iterator(); |
| 65 | return Collections.<IOFSwitch>emptySet().iterator(); |
| 66 | } |
| 67 | final String dpidStartsWith = |
| 68 | form.getFirstValue("dpid__startswith", true); |
| 69 | Iterator<IOFSwitch> switer = |
| 70 | floodlightProvider.getSwitches().values().iterator(); |
| 71 | if (dpidStartsWith != null) { |
| 72 | return new FilterIterator<IOFSwitch>(switer) { |
| 73 | @Override |
| 74 | protected boolean matches(IOFSwitch value) { |
| 75 | return value.getStringId().startsWith(dpidStartsWith); |
| 76 | } |
| 77 | }; |
| 78 | } |
| 79 | return switer; |
| 80 | } |
| 81 | } |