openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/core/sal/convertor/PacketOutConvertor.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.convertor;
   9
  10 import java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13
  14 import org.opendaylight.controller.sal.common.util.Arguments;
  15 import org.opendaylight.openflowplugin.openflow.md.OFConstants;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MaxLengthAction;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MaxLengthActionBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PortAction;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PortActionBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.ActionsList;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.ActionsListBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.actions.list.ActionBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortNumber;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketOutInput;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketOutInputBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.PathArgument;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 public class PacketOutConvertor {
  35     private static final Logger logger = LoggerFactory.getLogger(MeterConvertor.class);
  36     private static final String PREFIX_SEPARATOR = "/";
  37
  38     private PacketOutConvertor() {
  39
  40     }
  41
  42     // Get all the data for the PacketOut from the Yang/SAL-Layer
  43     /**
  44      * @param version
  45      * @param Yang
  46      *            Data source
  47      * @return PacketOutInput required by OF Library
  48      */
  49     public static PacketOutInput toPacketOutInput(TransmitPacketInput inputPacket, short version, Long xid,
  50             BigInteger datapathid) {
  51
  52         // Build Port ID from TransmitPacketInput.Ingress
  53         PortNumber inPortNr = null;
  54         Long bufferId = OFConstants.OFP_NO_BUFFER;
  55         List<ActionsList> actions = new ArrayList<ActionsList>();
  56         List<PathArgument> inArgs = null;
  57         PacketOutInputBuilder builder = new PacketOutInputBuilder();
  58         if (inputPacket.getIngress() != null) {
  59             inArgs = inputPacket.getIngress().getValue().getPath();
  60         }
  61         if (inArgs != null && inArgs.size() >= 3) {
  62             inPortNr = getPortNumber(inArgs.get(2));
  63         } else {
  64             // The packetOut originated from the controller
  65             inPortNr = new PortNumber(0xfffffffdL);
  66         }
  67
  68         // Build Buffer ID to be NO_OFP_NO_BUFFER
  69         if (inputPacket.getBufferId() != null) {
  70             bufferId = inputPacket.getBufferId();
  71         }
  72
  73         PortNumber outPort = null;
  74         NodeConnectorRef outRef = inputPacket.getEgress();
  75         List<PathArgument> outArgs = outRef.getValue().getPathArguments();
  76         if (outArgs.size() >= 3) {
  77             outPort = getPortNumber(outArgs.get(2));
  78         } else {
  79             new Exception("PORT NR not exist in Egress"); // TODO : P4 search
  80                                                           // for some normal
  81                                                           // exception
  82         }
  83
  84         // TODO VD P! wait for way to move Actions (e.g. augmentation)
  85
  86         // FIXME VD implementation for testing PacketIn (REMOVE IT)
  87         if (inputPacket.getAction() == null) {
  88             ActionsListBuilder asBuild = new ActionsListBuilder();
  89             ActionBuilder aBuild = new ActionBuilder();
  90             aBuild.setType(org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.Output.class);
  91             PortActionBuilder paBuild = new PortActionBuilder();
  92             paBuild.setPort(outPort);
  93             aBuild.addAugmentation(PortAction.class, paBuild.build());
  94             MaxLengthActionBuilder mlBuild = new MaxLengthActionBuilder();
  95             mlBuild.setMaxLength(0xffff);
  96             aBuild.addAugmentation(MaxLengthAction.class, mlBuild.build());
  97             asBuild.setAction(aBuild.build());
  98             actions.add(asBuild.build());
  99             builder.setActionsList(actions);
 100         } else {
 101             builder.setActionsList(ActionConvertor.getActionList(inputPacket.getAction(), version, datapathid));
 102         }
 103
 104         builder.setData(inputPacket.getPayload());
 105         builder.setVersion(version);
 106         builder.setXid(xid);
 107         builder.setInPort(inPortNr);
 108         builder.setBufferId(bufferId);
 109         // --------------------------------------------------------
 110
 111         return builder.build();
 112     }
 113
 114     private static PortNumber getPortNumber(PathArgument pathArgument) {
 115         // FIXME VD P! find InstanceIdentifier helper
 116         InstanceIdentifier.IdentifiableItem item = Arguments.checkInstanceOf(pathArgument,
 117                 InstanceIdentifier.IdentifiableItem.class);
 118         NodeConnectorKey key = Arguments.checkInstanceOf(item.getKey(), NodeConnectorKey.class);
 119         String[] split = key.getId().getValue().split(":");
 120         Long port = Long.decode(split[split.length - 1]);
 121         return new PortNumber(port);
 122     }
 123 }