openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/util/NodeConnectorRefToPortTranslator.java

   1 /**
   2  * Copyright (c) 2015 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
   9 package org.opendaylight.openflowplugin.impl.util;
  10
  11 import com.google.common.annotations.VisibleForTesting;
  12 import com.google.common.base.Preconditions;
  13 import java.math.BigInteger;
  14 import java.util.List;
  15 import javax.annotation.Nonnull;
  16 import javax.annotation.Nullable;
  17 import org.opendaylight.openflowplugin.api.OFConstants;
  18 import org.opendaylight.openflowplugin.api.openflow.md.util.OpenflowVersion;
  19 import org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.InPortCase;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.in.port._case.InPort;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketIn;
  27 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  28
  29 /**
  30  * Created by Tomas Slusny on 23.3.2016.
  31  */
  32 public final class NodeConnectorRefToPortTranslator {
  33
  34     private NodeConnectorRefToPortTranslator() {
  35     }
  36
  37     /**
  38      * Converts {@link PacketIn} to {@link NodeConnectorRef}.
  39      * @param packetIn Packet input
  40      * @param dataPathId Data path id
  41      * @return packet input converted to node connector reference
  42      */
  43     @Nullable
  44     public static NodeConnectorRef toNodeConnectorRef(@Nonnull PacketIn packetIn, BigInteger dataPathId) {
  45         Preconditions.checkNotNull(packetIn);
  46
  47         NodeConnectorRef ref = null;
  48         Long port = getPortNoFromPacketIn(packetIn);
  49
  50         if (port != null) {
  51             OpenflowVersion version = OpenflowVersion.get(packetIn.getVersion());
  52
  53             ref = InventoryDataServiceUtil.nodeConnectorRefFromDatapathIdPortno(dataPathId, port, version);
  54         }
  55
  56         return ref;
  57     }
  58
  59     /**
  60      * Gets port number from {@link NodeConnectorRef}.
  61      * @param nodeConnectorRef Node connector reference
  62      * @param version Openflow version
  63      * @return port number
  64      */
  65     @SuppressWarnings("unchecked")
  66     @Nullable
  67     public static Long fromNodeConnectorRef(@Nonnull NodeConnectorRef nodeConnectorRef, short version) {
  68         Preconditions.checkNotNull(nodeConnectorRef);
  69
  70         Long port = null;
  71
  72         if (nodeConnectorRef.getValue() instanceof KeyedInstanceIdentifier) {
  73             KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey> identifier =
  74                     (KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey>) nodeConnectorRef.getValue();
  75
  76             OpenflowVersion ofVersion = OpenflowVersion.get(version);
  77             String nodeConnectorId = identifier.getKey().getId().getValue();
  78
  79             port = InventoryDataServiceUtil.portNumberfromNodeConnectorId(ofVersion, nodeConnectorId);
  80         }
  81
  82         return port;
  83     }
  84
  85     @VisibleForTesting
  86     @Nullable
  87     static Long getPortNoFromPacketIn(@Nonnull PacketIn packetIn) {
  88         Preconditions.checkNotNull(packetIn);
  89
  90         Long port = null;
  91
  92         if (packetIn.getVersion() == OFConstants.OFP_VERSION_1_0 && packetIn.getInPort() != null) {
  93             port = packetIn.getInPort().longValue();
  94         } else if (packetIn.getVersion() == OFConstants.OFP_VERSION_1_3) {
  95             if (packetIn.getMatch() != null && packetIn.getMatch().getMatchEntry() != null) {
  96                 List<MatchEntry> entries = packetIn.getMatch().getMatchEntry();
  97
  98                 for (MatchEntry entry : entries) {
  99                     if (entry.getMatchEntryValue() instanceof InPortCase) {
 100                         InPortCase inPortCase = (InPortCase) entry.getMatchEntryValue();
 101
 102                         InPort inPort = inPortCase.getInPort();
 103
 104                         if (inPort != null) {
 105                             port = inPort.getPortNumber().getValue();
 106                             break;
 107                         }
 108                     }
 109                 }
 110             }
 111         }
 112
 113         return port;
 114     }
 115 }