extension/openflowplugin-extension-nicira/src/main/java/org/opendaylight/openflowplugin/extension/vendor/nicira/convertor/action/MultipathConvertor.java

   1 /*
   2  * Copyright (C) 2014 SDN Hub, LLC.
   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  * Authors : Srini Seetharaman
   9  */
  10 package org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.action;
  11
  12 import com.google.common.base.Preconditions;
  13 import org.opendaylight.openflowplugin.extension.api.ConvertorActionFromOFJava;
  14 import org.opendaylight.openflowplugin.extension.api.ConvertorActionToOFJava;
  15 import org.opendaylight.openflowplugin.extension.api.path.ActionPath;
  16 import org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.CodecPreconditionException;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.actions.grouping.Action;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.action.container.action.choice.ActionMultipath;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.action.container.action.choice.ActionMultipathBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.nx.action.multipath.grouping.NxActionMultipath;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.nx.action.multipath.grouping.NxActionMultipathBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.NxActionMultipathGrouping;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.flows.statistics.update.flow.and.statistics.map.list.instructions.instruction.instruction.apply.actions._case.apply.actions.action.action.NxActionMultipathNotifFlowsStatisticsUpdateApplyActionsCaseBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.flows.statistics.update.flow.and.statistics.map.list.instructions.instruction.instruction.write.actions._case.write.actions.action.action.NxActionMultipathNotifFlowsStatisticsUpdateWriteActionsCaseBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.group.desc.stats.updated.group.desc.stats.buckets.bucket.action.action.NxActionMultipathNotifGroupDescStatsUpdatedCaseBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nodes.node.table.flow.instructions.instruction.instruction.write.actions._case.write.actions.action.action.NxActionMultipathNodesNodeTableFlowWriteActionsCaseBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.NxMultipath;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.NxMultipathBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.nx.multipath.Dst;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.nx.multipath.DstBuilder;
  31
  32 public class MultipathConvertor implements
  33         ConvertorActionToOFJava<org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action, Action>,
  34         ConvertorActionFromOFJava<Action, ActionPath> {
  35
  36     @Override
  37     public org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action convert(final Action input, final ActionPath path) {
  38         NxActionMultipath action = ((ActionMultipath) input.getActionChoice()).getNxActionMultipath();
  39         DstBuilder dstBuilder = new DstBuilder();
  40         dstBuilder.setDstChoice(RegMoveConvertor.resolveDst(action.getDst()));
  41         dstBuilder.setStart(resolveStart(action.getOfsNbits()));
  42         dstBuilder.setEnd(resolveEnd(action.getOfsNbits()));
  43         NxMultipathBuilder builder = new NxMultipathBuilder();
  44         builder.setBasis(action.getBasis());
  45         builder.setAlgorithm(action.getAlgorithm());
  46         builder.setMaxLink(action.getMaxLink());
  47         builder.setArg(action.getArg());
  48         builder.setDst(dstBuilder.build());
  49         return resolveAction(builder.build(), path);
  50     }
  51
  52     private static int resolveStart(final int ofsNBints) {
  53         return extractSub(ofsNBints, 10, 6);
  54     }
  55
  56     private static int resolveEnd(final int ofsNBints) {
  57         int ofs = extractSub(ofsNBints, 10, 6);
  58         int nBits = extractSub(ofsNBints, 6, 0);
  59         return ofs + nBits;
  60     }
  61
  62     private static int extractSub(final int l, final int nrBits, final int offset) {
  63         final int rightShifted = l >>> offset;
  64         final int mask = (1 << nrBits) - 1;
  65         return rightShifted & mask;
  66     }
  67
  68     private static org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action resolveAction(final NxMultipath value, final ActionPath path) {
  69         switch (path) {
  70             case NODES_NODE_TABLE_FLOW_INSTRUCTIONS_INSTRUCTION_WRITEACTIONSCASE_WRITEACTIONS_ACTION_ACTION_EXTENSIONLIST_EXTENSION:
  71                 return new NxActionMultipathNodesNodeTableFlowWriteActionsCaseBuilder().setNxMultipath(value).build();
  72             case FLOWSSTATISTICSUPDATE_FLOWANDSTATISTICSMAPLIST_INSTRUCTIONS_INSTRUCTION_INSTRUCTION_WRITEACTIONSCASE_WRITEACTIONS_ACTION_ACTION:
  73                 return new NxActionMultipathNotifFlowsStatisticsUpdateWriteActionsCaseBuilder().setNxMultipath(value).build();
  74             case FLOWSSTATISTICSUPDATE_FLOWANDSTATISTICSMAPLIST_INSTRUCTIONS_INSTRUCTION_INSTRUCTION_APPLYACTIONSCASE_APPLYACTIONS_ACTION_ACTION:
  75                 return new NxActionMultipathNotifFlowsStatisticsUpdateApplyActionsCaseBuilder().setNxMultipath(value).build();
  76             case GROUPDESCSTATSUPDATED_GROUPDESCSTATS_BUCKETS_BUCKET_ACTION:
  77                 return new NxActionMultipathNotifGroupDescStatsUpdatedCaseBuilder().setNxMultipath(value).build();
  78             default:
  79                 throw new CodecPreconditionException(path);
  80         }
  81     }
  82
  83     @Override
  84     public Action convert(final org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action nxActionArg) {
  85         Preconditions.checkArgument(nxActionArg instanceof NxActionMultipathGrouping);
  86         NxActionMultipathGrouping nxAction = (NxActionMultipathGrouping) nxActionArg;
  87
  88         NxActionMultipathBuilder nxActionMultipathBuilder = new NxActionMultipathBuilder();
  89         nxActionMultipathBuilder.setFields(nxAction.getNxMultipath().getFields());
  90         nxActionMultipathBuilder.setBasis(nxAction.getNxMultipath().getBasis());
  91         nxActionMultipathBuilder.setAlgorithm(nxAction.getNxMultipath().getAlgorithm());
  92         nxActionMultipathBuilder.setMaxLink(nxAction.getNxMultipath().getMaxLink());
  93         nxActionMultipathBuilder.setArg(nxAction.getNxMultipath().getArg());
  94         Dst dst = nxAction.getNxMultipath().getDst();
  95         nxActionMultipathBuilder.setOfsNbits((dst.getStart() << 6) | (dst.getEnd() - dst.getStart()));
  96         nxActionMultipathBuilder.setDst(RegMoveConvertor.resolveDst(dst.getDstChoice()));
  97         ActionMultipathBuilder actionMultipathBuilder = new ActionMultipathBuilder();
  98         actionMultipathBuilder.setNxActionMultipath(nxActionMultipathBuilder.build());
  99         return ActionUtil.createAction(actionMultipathBuilder.build());
 100     }
 101
 102 }