pcep/ietf-stateful07/src/main/java/org/opendaylight/protocol/pcep/ietf/initiated00/PcinitiateMessageParser.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.initiated00;
   9
  10 import io.netty.buffer.ByteBuf;
  11
  12 import java.util.List;
  13
  14 import org.opendaylight.protocol.pcep.spi.AbstractMessageParser;
  15 import org.opendaylight.protocol.pcep.spi.ObjectHandlerRegistry;
  16 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Pcinitiate;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.PcinitiateBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.PcinitiateMessage;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.PcinitiateMessageBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.pcinitiate.message.Requests;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.pcinitiate.message.RequestsBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.Lsp;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.Srp;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.Bandwidth;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObj;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.include.route.object.Iro;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.Metrics;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
  35
  36 import com.google.common.collect.Lists;
  37
  38 /**
  39  * Parser for {@link Pcinitiate}
  40  */
  41 public class PcinitiateMessageParser extends AbstractMessageParser {
  42
  43         public static final int TYPE = 12;
  44
  45         public PcinitiateMessageParser(final ObjectHandlerRegistry registry) {
  46                 super(registry);
  47         }
  48
  49         @Override
  50         public void serializeMessage(final Message message, final ByteBuf buffer) {
  51                 if (!(message instanceof PcinitiateMessage)) {
  52                         throw new IllegalArgumentException("Wrong instance of Message. Passed instance of " + message.getClass()
  53                                         + ". Needed PcinitiateMessage.");
  54                 }
  55                 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.PcinitiateMessage init = ((Pcinitiate) message).getPcinitiateMessage();
  56                 for (final Requests req : init.getRequests()) {
  57                         buffer.writeBytes(serializeObject(req.getSrp()));
  58                         buffer.writeBytes(serializeObject(req.getLsp()));
  59                         if (req.getEndpointsObj() != null) {
  60                                 buffer.writeBytes(serializeObject(req.getEndpointsObj()));
  61                         }
  62                         if (req.getEro() != null) {
  63                                 buffer.writeBytes(serializeObject(req.getEro()));
  64                         }
  65                         if (req.getLspa() != null) {
  66                                 buffer.writeBytes(serializeObject(req.getLspa()));
  67                         }
  68                         if (req.getBandwidth() != null) {
  69                                 buffer.writeBytes(serializeObject(req.getBandwidth()));
  70                         }
  71                         if (req.getMetrics() != null && !req.getMetrics().isEmpty()) {
  72                                 for (final Metrics m : req.getMetrics()) {
  73                                         buffer.writeBytes(serializeObject(m.getMetric()));
  74                                 }
  75                         }
  76                         if (req.getIro() != null) {
  77                                 buffer.writeBytes(serializeObject(req.getIro()));
  78                         }
  79                 }
  80         }
  81
  82         @Override
  83         protected Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  84                 if (objects == null) {
  85                         throw new IllegalArgumentException("Passed list can't be null.");
  86                 }
  87                 final PcinitiateMessageBuilder builder = new PcinitiateMessageBuilder();
  88                 final List<Requests> reqs = Lists.newArrayList();
  89                 Requests req = null;
  90                 while (!objects.isEmpty()) {
  91                         req = this.getValidRequest(objects);
  92                         if (req == null) {
  93                                 break;
  94                         }
  95                         reqs.add(req);
  96                 }
  97                 builder.setRequests(reqs);
  98                 return new PcinitiateBuilder().setPcinitiateMessage(builder.build()).build();
  99         }
 100
 101         private Requests getValidRequest(final List<Object> objects) {
 102                 final RequestsBuilder builder = new RequestsBuilder();
 103                 builder.setSrp((Srp) objects.get(0));
 104                 objects.remove(0);
 105
 106                 builder.setLsp((Lsp) objects.get(0));
 107                 objects.remove(0);
 108
 109                 final List<Metrics> metrics = Lists.newArrayList();
 110
 111                 Object obj;
 112                 State state = State.Init;
 113                 while (!objects.isEmpty() && !state.equals(State.End)) {
 114                         obj = objects.get(0);
 115
 116                         switch (state) {
 117                         case Init:
 118                                 state = State.EndpointsIn;
 119                                 if (obj instanceof EndpointsObj) {
 120                                         builder.setEndpointsObj((EndpointsObj) obj);
 121                                         break;
 122                                 }
 123                         case EndpointsIn:
 124                                 state = State.EroIn;
 125                                 if (obj instanceof Ero) {
 126                                         builder.setEro((Ero) obj);
 127                                         break;
 128                                 }
 129                         case EroIn:
 130                                 state = State.LspaIn;
 131                                 if (obj instanceof Lspa) {
 132                                         builder.setLspa((Lspa) obj);
 133                                         break;
 134                                 }
 135                         case LspaIn:
 136                                 state = State.BandwidthIn;
 137                                 if (obj instanceof Bandwidth) {
 138                                         builder.setBandwidth((Bandwidth) obj);
 139                                         break;
 140                                 }
 141                         case BandwidthIn:
 142                                 state = State.MetricIn;
 143                                 if (obj instanceof Metric) {
 144                                         metrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 145                                         state = State.BandwidthIn;
 146                                         break;
 147                                 }
 148                         case MetricIn:
 149                                 state = State.IroIn;
 150                                 if (obj instanceof Iro) {
 151                                         builder.setIro((Iro) obj);
 152                                         break;
 153                                 }
 154                         case IroIn:
 155                                 state = State.End;
 156                                 break;
 157                         case End:
 158                                 break;
 159                         }
 160                         if (!state.equals(State.End)) {
 161                                 objects.remove(0);
 162                         }
 163                 }
 164                 builder.setMetrics(metrics);
 165                 return builder.build();
 166         }
 167
 168         private enum State {
 169                 Init, EndpointsIn, EroIn, LspaIn, BandwidthIn, MetricIn, IroIn, End
 170         }
 171
 172         @Override
 173         public int getMessageType() {
 174                 return TYPE;
 175         }
 176 }