openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/core/translator/NotificationPlainTranslator.java

   1 /**
   2  * Copyright (c) 2014 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.translator;
   9
  10 import java.math.BigInteger;
  11 import java.util.Collections;
  12 import java.util.List;
  13
  14 import org.opendaylight.openflowplugin.api.openflow.md.core.SwitchConnectionDistinguisher;
  15 import org.opendaylight.openflowplugin.openflow.md.core.IMDMessageTranslator;
  16 import org.opendaylight.openflowplugin.openflow.md.core.NotificationQueueWrapper;
  17 import org.opendaylight.openflowplugin.openflow.md.core.session.SessionContext;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  19 import org.opendaylight.yangtools.yang.binding.DataObject;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 import com.google.common.collect.Lists;
  24
  25 /**
  26  *
  27  */
  28 public class NotificationPlainTranslator implements IMDMessageTranslator<OfHeader, List<DataObject>> {
  29
  30     private static final Logger LOG = LoggerFactory
  31             .getLogger(NotificationPlainTranslator.class);
  32
  33     @Override
  34     public List<DataObject> translate(SwitchConnectionDistinguisher cookie,
  35             SessionContext sc, OfHeader msg) {
  36         List<DataObject> results = null;
  37
  38         if(msg instanceof NotificationQueueWrapper) {
  39             NotificationQueueWrapper wrappedNotification = (NotificationQueueWrapper) msg;
  40             BigInteger datapathId = sc.getFeatures().getDatapathId();
  41             Short version = wrappedNotification.getVersion();
  42             LOG.debug("NotificationQueueWrapper: version {}  dataPathId {} notification {}", version, datapathId, wrappedNotification.getImplementedInterface());
  43             results = Lists.newArrayList((DataObject) wrappedNotification.getNotification());
  44         } else {
  45             // TODO - Do something smarter than returning null if translation fails... what Exception should we throw here?
  46             results = Collections.emptyList();
  47         }
  48         return results;
  49     }
  50
  51 }