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 package org.opendaylight.openflowplugin.impl.util;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  11 import com.google.common.base.Preconditions;
  12 import java.util.List;
  13 import javax.annotation.Nonnull;
  14 import javax.annotation.Nullable;
  15 import org.opendaylight.openflowplugin.api.OFConstants;
  16 import org.opendaylight.openflowplugin.api.openflow.md.util.OpenflowVersion;
  17 import org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.InPortCase;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.in.port._case.InPort;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketIn;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  27 import org.opendaylight.yangtools.yang.common.Uint32;
  28 import org.opendaylight.yangtools.yang.common.Uint64;
  29
  30 /**
  31  * Created by Tomas Slusny on 23.3.2016.
  32  */
  33 public final class NodeConnectorRefToPortTranslator {
  34
  35     private NodeConnectorRefToPortTranslator() {
  36     }
  37
  38     /**
  39      * Converts {@link PacketIn} to {@link NodeConnectorRef}.
  40      * @param packetIn Packet input
  41      * @param dataPathId Data path id
  42      * @return packet input converted to node connector reference
  43      */
  44     @Nullable
  45     public static NodeConnectorRef toNodeConnectorRef(@Nonnull final PacketIn packetIn, final Uint64 dataPathId) {
  46         Preconditions.checkNotNull(packetIn);
  47
  48         NodeConnectorRef ref = null;
  49         Uint32 port = getPortNoFromPacketIn(packetIn);
  50
  51         if (port != null) {
  52             OpenflowVersion version = OpenflowVersion.get(packetIn.getVersion());
  53
  54             ref = InventoryDataServiceUtil.nodeConnectorRefFromDatapathIdPortno(dataPathId, port, version);
  55         }
  56
  57         return ref;
  58     }
  59
  60     /**
  61      * Gets port number from {@link NodeConnectorRef}.
  62      * @param nodeConnectorRef Node connector reference
  63      * @param version Openflow version
  64      * @return port number
  65      */
  66     @SuppressWarnings("unchecked")
  67     @Nullable
  68     public static Uint32 fromNodeConnectorRef(@Nonnull final NodeConnectorRef nodeConnectorRef, final short version) {
  69         Preconditions.checkNotNull(nodeConnectorRef);
  70
  71         Uint32 port = null;
  72
  73         final InstanceIdentifier<?> value = nodeConnectorRef.getValue();
  74         if (value instanceof KeyedInstanceIdentifier) {
  75             KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey> identifier =
  76                     (KeyedInstanceIdentifier<NodeConnector, NodeConnectorKey>) value;
  77
  78             OpenflowVersion ofVersion = OpenflowVersion.get(version);
  79             String nodeConnectorId = identifier.getKey().getId().getValue();
  80
  81             port = InventoryDataServiceUtil.portNumberfromNodeConnectorId(ofVersion, nodeConnectorId);
  82         }
  83
  84         return port;
  85     }
  86
  87     @VisibleForTesting
  88     @Nullable
  89     static Uint32 getPortNoFromPacketIn(@Nonnull final PacketIn packetIn) {
  90         Preconditions.checkNotNull(packetIn);
  91
  92         Uint32 port = null;
  93
  94         if (packetIn.getVersion().toJava() == OFConstants.OFP_VERSION_1_0 && packetIn.getInPort() != null) {
  95             port = Uint32.valueOf(packetIn.getInPort());
  96         } else if (packetIn.getVersion().toJava() == OFConstants.OFP_VERSION_1_3) {
  97             if (packetIn.getMatch() != null && packetIn.getMatch().getMatchEntry() != null) {
  98                 List<MatchEntry> entries = packetIn.getMatch().getMatchEntry();
  99
 100                 for (MatchEntry entry : entries) {
 101                     if (entry.getMatchEntryValue() instanceof InPortCase) {
 102                         InPortCase inPortCase = (InPortCase) entry.getMatchEntryValue();
 103
 104                         InPort inPort = inPortCase.getInPort();
 105
 106                         if (inPort != null) {
 107                             port = inPort.getPortNumber().getValue();
 108                             break;
 109                         }
 110                     }
 111                 }
 112             }
 113         }
 114
 115         return port;
 116     }
 117 }