pcep/ietf-stateful07/src/main/java/org/opendaylight/protocol/pcep/ietf/stateful07/Stateful07PCReportMessageParser.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.protocol.pcep.ietf.stateful07;
   9
  10 import io.netty.buffer.ByteBuf;
  11 import io.netty.buffer.Unpooled;
  12
  13 import java.util.List;
  14
  15 import org.opendaylight.protocol.pcep.spi.AbstractMessageParser;
  16 import org.opendaylight.protocol.pcep.spi.MessageUtil;
  17 import org.opendaylight.protocol.pcep.spi.ObjectRegistry;
  18 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  19 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Pcrpt;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.PcrptBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.Lsp;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.PcrptMessageBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.pcrpt.message.Reports;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.pcrpt.message.ReportsBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.pcrpt.message.reports.Path;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.pcrpt.message.pcrpt.message.reports.PathBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.Srp;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.Bandwidth;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.include.route.object.Iro;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.Metrics;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.Rro;
  39
  40 import com.google.common.collect.Lists;
  41
  42 /**
  43  * Parser for {@link Pcrpt}
  44  */
  45 public final class Stateful07PCReportMessageParser extends AbstractMessageParser {
  46
  47         public static final int TYPE = 10;
  48
  49         public Stateful07PCReportMessageParser(final ObjectRegistry registry) {
  50                 super(registry);
  51         }
  52
  53         @Override
  54         public void serializeMessage(final Message message, final ByteBuf out) {
  55                 if (!(message instanceof Pcrpt)) {
  56                         throw new IllegalArgumentException("Wrong instance of Message. Passed instance of " + message.getClass()
  57                                         + ". Nedded PcrptMessage.");
  58                 }
  59                 final Pcrpt msg = (Pcrpt) message;
  60                 final List<Reports> reports = msg.getPcrptMessage().getReports();
  61                 ByteBuf buffer = Unpooled.buffer();
  62                 for (final Reports report : reports) {
  63                         if (report.getSrp() != null) {
  64                                 buffer.writeBytes(serializeObject(report.getSrp()));
  65                         }
  66                         buffer.writeBytes(serializeObject(report.getLsp()));
  67                         final Path p = report.getPath();
  68                         if (p != null) {
  69                                 buffer.writeBytes(serializeObject(p.getEro()));
  70                                 if (p.getLspa() != null) {
  71                                         buffer.writeBytes(serializeObject(p.getLspa()));
  72                                 }
  73                                 if (p.getBandwidth() != null) {
  74                                         buffer.writeBytes(serializeObject(p.getBandwidth()));
  75                                 }
  76                                 if (p.getMetrics() != null && !p.getMetrics().isEmpty()) {
  77                                         for (final Metrics m : p.getMetrics()) {
  78                                                 buffer.writeBytes(serializeObject(m.getMetric()));
  79                                         }
  80                                 }
  81                                 if (p.getIro() != null) {
  82                                         buffer.writeBytes(serializeObject(p.getIro()));
  83                                 }
  84                                 if (p.getRro() != null) {
  85                                         buffer.writeBytes(serializeObject(p.getRro()));
  86                                 }
  87                         }
  88                 }
  89                 MessageUtil.formatMessage(TYPE, buffer, out);
  90         }
  91
  92         @Override
  93         public Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  94                 if (objects == null) {
  95                         throw new IllegalArgumentException("Passed list can't be null.");
  96                 }
  97                 if (objects.isEmpty()) {
  98                         throw new PCEPDeserializerException("Pcrpt message cannot be empty.");
  99                 }
 100
 101                 final List<Reports> reports = Lists.newArrayList();
 102
 103                 while (!objects.isEmpty()) {
 104                         final Reports report = getValidReports(objects, errors);
 105                         if (reports != null) {
 106                                 reports.add(report);
 107                         }
 108                 }
 109                 return new PcrptBuilder().setPcrptMessage(new PcrptMessageBuilder().setReports(reports).build()).build();
 110         }
 111
 112         private Reports getValidReports(final List<Object> objects, final List<Message> errors) {
 113                 final ReportsBuilder builder = new ReportsBuilder();
 114                 if (objects.get(0) instanceof Srp) {
 115                         builder.setSrp((Srp) objects.get(0));
 116                         objects.remove(0);
 117                 }
 118                 if (objects.get(0) instanceof Lsp) {
 119                         builder.setLsp((Lsp) objects.get(0));
 120                         objects.remove(0);
 121                 } else {
 122                         errors.add(createErrorMsg(PCEPErrors.LSP_MISSING));
 123                         return null;
 124                 }
 125                 if (!objects.isEmpty()) {
 126                         final PathBuilder pBuilder = new PathBuilder();
 127                         parsePath(objects, pBuilder);
 128                         builder.setPath(pBuilder.build());
 129                 }
 130                 return builder.build();
 131         }
 132
 133         private void parsePath(final List<Object> objects, final PathBuilder builder) {
 134                 final List<Metrics> pathMetrics = Lists.newArrayList();
 135                 Object obj;
 136                 State state = State.Init;
 137                 while (!objects.isEmpty() && !state.equals(State.End)) {
 138                         obj = objects.get(0);
 139                         switch (state) {
 140                         case Init:
 141                                 state = State.EroIn;
 142                                 if (obj instanceof Ero) {
 143                                         builder.setEro((Ero) obj);
 144                                         break;
 145                                 }
 146                         case EroIn:
 147                                 state = State.LspaIn;
 148                                 if (obj instanceof Lspa) {
 149                                         builder.setLspa((Lspa) obj);
 150                                         break;
 151                                 }
 152                         case LspaIn:
 153                                 state = State.BandwidthIn;
 154                                 if (obj instanceof Bandwidth) {
 155                                         builder.setBandwidth((Bandwidth) obj);
 156                                         break;
 157                                 }
 158                         case BandwidthIn:
 159                                 state = State.MetricIn;
 160                                 if (obj instanceof Metric) {
 161                                         pathMetrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 162                                         state = State.BandwidthIn;
 163                                         break;
 164                                 }
 165                         case MetricIn:
 166                                 state = State.IroIn;
 167                                 if (obj instanceof Iro) {
 168                                         builder.setIro((Iro) obj);
 169                                         break;
 170                                 }
 171                         case IroIn:
 172                                 state = State.RroIn;
 173                                 if (obj instanceof Rro) {
 174                                         builder.setRro((Rro) obj);
 175                                         break;
 176                                 }
 177                         case RroIn:
 178                                 state = State.End;
 179                                 break;
 180                         case End:
 181                                 break;
 182                         }
 183                         if (!state.equals(State.End)) {
 184                                 objects.remove(0);
 185                         }
 186                 }
 187                 if (!pathMetrics.isEmpty()) {
 188                         builder.setMetrics(pathMetrics);
 189                 }
 190         }
 191
 192         private enum State {
 193                 Init, EroIn, LspaIn, BandwidthIn, MetricIn, IroIn, RroIn, End
 194         }
 195
 196         @Override
 197         public int getMessageType() {
 198                 return TYPE;
 199         }
 200 }