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.openflowplugin.api.openflow.md.core.sal.BuildSwitchFeatures;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.flow.node.SwitchFeatures;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 /**
  20  * @author jsebin
  21  *
  22  */
  23 public class SwitchFeaturesUtil {
  24
  25     protected static final Logger LOG = LoggerFactory.getLogger(SwitchFeaturesUtil.class);
  26
  27     private static SwitchFeaturesUtil instance = new SwitchFeaturesUtil();
  28     private Map<Short, BuildSwitchFeatures> swFeaturesBuilders;
  29
  30     private SwitchFeaturesUtil() {
  31         swFeaturesBuilders = new HashMap<>();
  32         swFeaturesBuilders.put((short) 1, BuildSwitchCapabilitiesOF10.getInstance());
  33         swFeaturesBuilders.put((short) 4, BuildSwitchCapabilitiesOF13.getInstance());
  34     }
  35
  36     /**
  37      * Get singleton instance
  38      *
  39      * @return instance
  40      */
  41     public static SwitchFeaturesUtil getInstance() {
  42         return instance;
  43     }
  44
  45     /**
  46      * @param features {@link org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput}
  47      * @return switch features
  48      */
  49     public SwitchFeatures buildSwitchFeatures(GetFeaturesOutput features) {
  50
  51         if(swFeaturesBuilders.containsKey(features.getVersion()) == true) {
  52             LOG.debug("map contains version {}", features.getVersion());
  53             try {
  54                 return swFeaturesBuilders.get(features.getVersion()).build(features);
  55             } catch (NullPointerException e) {
  56                 LOG.error("error while building switch features {}", e);
  57             }
  58         }
  59         else {
  60             LOG.warn("unknown version: {}", features.getVersion());
  61         }
  62
  63         return null;
  64     }
  65
  66 }