LearningSwitchTable.java

/*
 * Copyright (c) 2013 Big Switch Networks, Inc.
 *
 * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/legal/epl-v10.html
 *
 * 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.sdnplatform.learningswitch;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;


import org.openflow.util.HexString;
import org.restlet.data.Status;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;
import org.sdnplatform.core.IControllerService;
import org.sdnplatform.core.IOFSwitch;
import org.sdnplatform.core.types.MacVlanPair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LearningSwitchTable extends ServerResource {
    protected static Logger log = LoggerFactory.getLogger(LearningSwitchTable.class);
    
    protected Map<String, Object> formatTableEntry(MacVlanPair key, short port) {
        Map<String, Object> entry = new HashMap<String, Object>();
        entry.put("mac", HexString.toHexString(key.mac));
        entry.put("vlan", key.vlan);
        entry.put("port", port);
        return entry;
    }
    
    protected List<Map<String, Object>> getOneSwitchTable(Map<MacVlanPair, Short> switchMap) {
        List<Map<String, Object>> switchTable = new ArrayList<Map<String, Object>>();
        for (Entry<MacVlanPair, Short> entry : switchMap.entrySet()) {
            switchTable.add(formatTableEntry(entry.getKey(), entry.getValue()));
        }
        return switchTable;
    }
    
    @Get("json")
    public Map<String, List<Map<String, Object>>> getSwitchTableJson() {
        ILearningSwitchService lsp = 
                (ILearningSwitchService)getContext().getAttributes().
                    get(ILearningSwitchService.class.getCanonicalName());

        Map<IOFSwitch, Map<MacVlanPair,Short>> table = lsp.getTable();
        Map<String, List<Map<String, Object>>> allSwitchTableJson = new HashMap<String, List<Map<String, Object>>>();
        
        String switchId = (String) getRequestAttributes().get("switch");
        if (switchId.toLowerCase().equals("all")) {
            for (IOFSwitch sw : table.keySet()) {
                allSwitchTableJson.put(HexString.toHexString(sw.getId()), getOneSwitchTable(table.get(sw)));
            }
        } else {
            try {
                IControllerService controllerProvider = 
                        (IControllerService)getContext().getAttributes().
                            get(IControllerService.class.getCanonicalName());
                long dpid = HexString.toLong(switchId);
                IOFSwitch sw = controllerProvider.getSwitches().get(dpid);
                allSwitchTableJson.put(HexString.toHexString(sw.getId()), getOneSwitchTable(table.get(sw)));
            } catch (NumberFormatException e) {
                log.error("Could not decode switch ID = " + switchId);
                setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
            }
        }
            
        return allSwitchTableJson;
    }
}