+/*
+ * Copyright (C) 2014 SDN Hub, LLC.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Authors : Srini Seetharaman
+ */
+package org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.action;
+
+import org.opendaylight.openflowplugin.extension.api.ConvertorActionFromOFJava;
+import org.opendaylight.openflowplugin.extension.api.ConvertorActionToOFJava;
+import org.opendaylight.openflowplugin.extension.api.path.ActionPath;
+import org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.CodecPreconditionException;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.NxmNxMultipath;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.OfjAugNxAction;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.OfjAugNxActionBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.nx.action.multipath.grouping.ActionMultipath;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.action.rev140421.ofj.nx.action.multipath.grouping.ActionMultipathBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.NxActionMultipathGrouping;
+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;
+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;
+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;
+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;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.NxMultipath;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.NxMultipathBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.nx.multipath.Dst;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.nx.action.multipath.grouping.nx.multipath.DstBuilder;
+import org.opendaylight.openflowplugin.extension.vendor.nicira.convertor.action.RegMoveConvertor;
+
+import com.google.common.base.Preconditions;
+
+public class MultipathConvertor implements
+ConvertorActionToOFJava<org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action, Action>,
+ConvertorActionFromOFJava<Action, ActionPath> {
+
+ @Override
+ public org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action convert(Action input, ActionPath path) {
+ ActionMultipath action = input.getAugmentation(OfjAugNxAction.class).getActionMultipath();
+ DstBuilder dstBuilder = new DstBuilder();
+ dstBuilder.setDstChoice(RegMoveConvertor.resolveDst(action.getDst()));
+ dstBuilder.setStart(resolveStart(action.getOfsNbits()));
+ dstBuilder.setEnd(resolveEnd(action.getOfsNbits()));
+ NxMultipathBuilder builder = new NxMultipathBuilder();
+ builder.setBasis(action.getBasis());
+ builder.setAlgorithm(action.getAlgorithm());
+ builder.setMaxLink(action.getMaxLink());
+ builder.setArg(action.getArg());
+ builder.setDst(dstBuilder.build());
+ return resolveAction(builder.build(), path);
+ }
+
+ private static int resolveStart(int ofsNBints) {
+ return extractSub(ofsNBints, 10, 6);
+ }
+
+ private static int resolveEnd(int ofsNBints) {
+ int ofs = extractSub(ofsNBints, 10, 6);
+ int nBits = extractSub(ofsNBints, 6, 0);
+ return ofs + nBits;
+ }
+
+ private static int extractSub(final int l, final int nrBits, final int offset) {
+ final int rightShifted = l >>> offset;
+ final int mask = (1 << nrBits) - 1;
+ return rightShifted & mask;
+ }
+
+ private static org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action resolveAction(NxMultipath value, ActionPath path) {
+ switch (path) {
+ case NODES_NODE_TABLE_FLOW_INSTRUCTIONS_INSTRUCTION_WRITEACTIONSCASE_WRITEACTIONS_ACTION_ACTION_EXTENSIONLIST_EXTENSION:
+ return new NxActionMultipathNodesNodeTableFlowWriteActionsCaseBuilder().setNxMultipath(value).build();
+ case FLOWSSTATISTICSUPDATE_FLOWANDSTATISTICSMAPLIST_INSTRUCTIONS_INSTRUCTION_INSTRUCTION_WRITEACTIONSCASE_WRITEACTIONS_ACTION_ACTION:
+ return new NxActionMultipathNotifFlowsStatisticsUpdateWriteActionsCaseBuilder().setNxMultipath(value).build();
+ case FLOWSSTATISTICSUPDATE_FLOWANDSTATISTICSMAPLIST_INSTRUCTIONS_INSTRUCTION_INSTRUCTION_APPLYACTIONSCASE_APPLYACTIONS_ACTION_ACTION:
+ return new NxActionMultipathNotifFlowsStatisticsUpdateApplyActionsCaseBuilder().setNxMultipath(value).build();
+ case GROUPDESCSTATSUPDATED_GROUPDESCSTATS_BUCKETS_BUCKET_ACTION:
+ return new NxActionMultipathNotifGroupDescStatsUpdatedCaseBuilder().setNxMultipath(value).build();
+ default:
+ throw new CodecPreconditionException(path);
+ }
+ }
+
+ @Override
+ public Action convert(org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action nxActionArg) {
+ Preconditions.checkArgument(nxActionArg instanceof NxActionMultipathGrouping);
+ NxActionMultipathGrouping nxAction = (NxActionMultipathGrouping) nxActionArg;
+ ActionMultipathBuilder builder = new ActionMultipathBuilder();
+
+ builder.setFields(nxAction.getNxMultipath().getFields());
+ builder.setBasis(nxAction.getNxMultipath().getBasis());
+ builder.setAlgorithm(nxAction.getNxMultipath().getAlgorithm());
+ builder.setMaxLink(nxAction.getNxMultipath().getMaxLink());
+ builder.setArg(nxAction.getNxMultipath().getArg());
+ Dst dst = nxAction.getNxMultipath().getDst();
+ builder.setOfsNbits((dst.getStart() << 6) | (dst.getEnd() - dst.getStart()));
+ builder.setDst(RegMoveConvertor.resolveDst(dst.getDstChoice()));
+
+ OfjAugNxActionBuilder augNxActionBuilder = new OfjAugNxActionBuilder();
+ augNxActionBuilder.setActionMultipath(builder.build());
+ return ActionUtil.createNiciraAction(augNxActionBuilder.build(), NxmNxMultipath.class);
+ }
+
+}