pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/message/PCEPReportMessageParser.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.impl.message;
   9
  10 import io.netty.buffer.ByteBuf;
  11
  12 import java.util.List;
  13
  14 import org.opendaylight.protocol.pcep.PCEPDeserializerException;
  15 import org.opendaylight.protocol.pcep.spi.ObjectHandlerRegistry;
  16 import org.opendaylight.protocol.pcep.spi.PCEPErrors;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev131007.Pcrpt;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev131007.PcrptBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.Bandwidth;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.include.route.object.Iro;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.Metrics;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.object.Lsp;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrpt.message.PcrptMessageBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrpt.message.pcrpt.message.Reports;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrpt.message.pcrpt.message.ReportsBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrpt.message.pcrpt.message.reports.Path;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcrpt.message.pcrpt.message.reports.PathBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.Rro;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.srp.object.Srp;
  36
  37 import com.google.common.collect.Lists;
  38
  39 /**
  40  * Parser for {@link Pcrpt}
  41  */
  42 public class PCEPReportMessageParser extends AbstractMessageParser {
  43
  44         public static final int TYPE = 10;
  45
  46         public PCEPReportMessageParser(final ObjectHandlerRegistry registry) {
  47                 super(registry);
  48         }
  49
  50         @Override
  51         public void serializeMessage(final Message message, final ByteBuf buffer) {
  52                 if (!(message instanceof Pcrpt)) {
  53                         throw new IllegalArgumentException("Wrong instance of Message. Passed instance of " + message.getClass()
  54                                         + ". Nedded PcrptMessage.");
  55                 }
  56                 final Pcrpt msg = (Pcrpt) message;
  57                 final List<Reports> reports = msg.getPcrptMessage().getReports();
  58                 for (final Reports report : reports) {
  59                         if (report.getSrp() != null) {
  60                                 buffer.writeBytes(serializeObject(report.getSrp()));
  61                         }
  62                         buffer.writeBytes(serializeObject(report.getLsp()));
  63                         final Path p = report.getPath();
  64                         if (p != null) {
  65                                 if (p.getEro() != null) {
  66                                         buffer.writeBytes(serializeObject(p.getEro()));
  67                                 }
  68                                 if (p.getLspa() != null) {
  69                                         buffer.writeBytes(serializeObject(p.getLspa()));
  70                                 }
  71                                 if (p.getBandwidth() != null) {
  72                                         buffer.writeBytes(serializeObject(p.getBandwidth()));
  73                                 }
  74                                 if (p.getMetrics() != null && !p.getMetrics().isEmpty()) {
  75                                         for (final Metrics m : p.getMetrics()) {
  76                                                 buffer.writeBytes(serializeObject(m.getMetric()));
  77                                         }
  78                                 }
  79                                 if (p.getIro() != null) {
  80                                         buffer.writeBytes(serializeObject(p.getIro()));
  81                                 }
  82                                 if (p.getRro() != null) {
  83                                         buffer.writeBytes(serializeObject(p.getRro()));
  84                                 }
  85                         }
  86                 }
  87         }
  88
  89         @Override
  90         public Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  91                 if (objects == null) {
  92                         throw new IllegalArgumentException("Passed list can't be null.");
  93                 }
  94                 if (objects.isEmpty()) {
  95                         throw new PCEPDeserializerException("Pcrpt message cannot be empty.");
  96                 }
  97
  98                 final List<Reports> reports = Lists.newArrayList();
  99
 100                 while (!objects.isEmpty()) {
 101                         final Reports report = getValidReports(objects, errors);
 102                         if (reports != null) {
 103                                 reports.add(report);
 104                         }
 105                 }
 106                 return new PcrptBuilder().setPcrptMessage(new PcrptMessageBuilder().setReports(reports).build()).build();
 107         }
 108
 109         private Reports getValidReports(final List<Object> objects, final List<Message> errors) {
 110                 final ReportsBuilder builder = new ReportsBuilder();
 111                 if (objects.get(0) instanceof Srp) {
 112                         builder.setSrp((Srp) objects.get(0));
 113                         objects.remove(0);
 114                 }
 115                 if (objects.get(0) instanceof Lsp) {
 116                         builder.setLsp((Lsp) objects.get(0));
 117                         objects.remove(0);
 118                 } else {
 119                         errors.add(createErrorMsg(PCEPErrors.LSP_MISSING));
 120                         return null;
 121                 }
 122                 if (!objects.isEmpty()) {
 123                         final PathBuilder pBuilder = new PathBuilder();
 124                         parsePath(objects, pBuilder);
 125                         builder.setPath(pBuilder.build());
 126                 }
 127                 return builder.build();
 128         }
 129
 130         private void parsePath(final List<Object> objects, final PathBuilder builder) {
 131                 final List<Metrics> pathMetrics = Lists.newArrayList();
 132                 Object obj;
 133                 State state = State.Init;
 134                 while (!objects.isEmpty() && !state.equals(State.End)) {
 135                         obj = objects.get(0);
 136                         switch (state) {
 137                         case Init:
 138                                 state = State.EroIn;
 139                                 if (obj instanceof Ero) {
 140                                         builder.setEro((Ero) obj);
 141                                         break;
 142                                 }
 143                         case EroIn:
 144                                 state = State.LspaIn;
 145                                 if (obj instanceof Lspa) {
 146                                         builder.setLspa((Lspa) obj);
 147                                         break;
 148                                 }
 149                         case LspaIn:
 150                                 state = State.BandwidthIn;
 151                                 if (obj instanceof Bandwidth) {
 152                                         builder.setBandwidth((Bandwidth) obj);
 153                                         break;
 154                                 }
 155                         case BandwidthIn:
 156                                 state = State.MetricIn;
 157                                 if (obj instanceof Metric) {
 158                                         pathMetrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 159                                         state = State.BandwidthIn;
 160                                         break;
 161                                 }
 162                         case MetricIn:
 163                                 state = State.IroIn;
 164                                 if (obj instanceof Iro) {
 165                                         builder.setIro((Iro) obj);
 166                                         break;
 167                                 }
 168                         case IroIn:
 169                                 state = State.RroIn;
 170                                 if (obj instanceof Rro) {
 171                                         builder.setRro((Rro) obj);
 172                                         break;
 173                                 }
 174                         case RroIn:
 175                                 state = State.End;
 176                                 break;
 177                         case End:
 178                                 break;
 179                         }
 180                         if (!state.equals(State.End)) {
 181                                 objects.remove(0);
 182                         }
 183                 }
 184                 if (!pathMetrics.isEmpty()) {
 185                         builder.setMetrics(pathMetrics);
 186                 }
 187         }
 188
 189         private enum State {
 190                 Init, EroIn, LspaIn, BandwidthIn, MetricIn, IroIn, RroIn, End
 191         }
 192
 193         @Override
 194         public int getMessageType() {
 195                 return TYPE;
 196         }
 197 }