openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/core/sal/SwitchFeaturesUtil.java

   1 /**
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.openflowplugin.openflow.md.core.sal;
   9
  10 import java.util.HashMap;
  11 import java.util.Map;
  12
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.flow.node.SwitchFeatures;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  15 import org.slf4j.Logger;
  16 import org.slf4j.LoggerFactory;
  17
  18 /**
  19  * @author jsebin
  20  *
  21  */
  22 public class SwitchFeaturesUtil {
  23
  24     protected static final Logger LOG = LoggerFactory.getLogger(SwitchFeaturesUtil.class);
  25
  26     private static SwitchFeaturesUtil instance = new SwitchFeaturesUtil();
  27     private Map<Short, BuildSwitchFeatures> swFeaturesBuilders;
  28
  29     private SwitchFeaturesUtil() {
  30         swFeaturesBuilders = new HashMap<>();
  31         swFeaturesBuilders.put((short) 1, BuildSwitchCapabilitiesOF10.getInstance());
  32         swFeaturesBuilders.put((short) 4, BuildSwitchCapabilitiesOF13.getInstance());
  33     }
  34
  35     /**
  36      * Get singleton instance
  37      *
  38      * @return instance
  39      */
  40     public static SwitchFeaturesUtil getInstance() {
  41         return instance;
  42     }
  43
  44     /**
  45      * @param features {@link org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput}
  46      * @return switch features
  47      */
  48     public SwitchFeatures buildSwitchFeatures(GetFeaturesOutput features) {
  49
  50         if(swFeaturesBuilders.containsKey(features.getVersion()) == true) {
  51             LOG.debug("map contains version {}", features.getVersion());
  52             try {
  53                 return swFeaturesBuilders.get(features.getVersion()).build(features);
  54             } catch (NullPointerException e) {
  55                 LOG.error("error while building switch features {}", e);
  56             }
  57         }
  58         else {
  59             LOG.warn("unknown version: {}", features.getVersion());
  60         }
  61
  62         return null;
  63     }
  64
  65 }