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