pcep/ietf-stateful07/src/main/java/org/opendaylight/protocol/pcep/ietf/initiated00/CInitiated00PCInitiateMessageParser.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 com.google.common.base.Preconditions;
  11 import com.google.common.collect.Lists;
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14 import java.util.List;
  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.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Pcinitiate;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.PcinitiateBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.PcinitiateMessage;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.PcinitiateMessageBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.pcinitiate.message.Requests;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.pcinitiate.message.RequestsBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.lsp.object.Lsp;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.srp.object.Srp;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.Bandwidth;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObj;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.include.route.object.Iro;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.Metrics;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
  37
  38 /**
  39  * Parser for {@link Pcinitiate}
  40  */
  41 public class CInitiated00PCInitiateMessageParser extends AbstractMessageParser {
  42
  43     public static final int TYPE = 12;
  44
  45     public CInitiated00PCInitiateMessageParser(final ObjectRegistry registry) {
  46         super(registry);
  47     }
  48
  49     @Override
  50     public void serializeMessage(final Message message, final ByteBuf out) {
  51         Preconditions.checkArgument(message instanceof PcinitiateMessage, "Wrong instance of Message. Passed instance of %s. Need PcinitiateMessage.", message.getClass());
  52         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.pcinitiate.message.PcinitiateMessage init = ((Pcinitiate) message).getPcinitiateMessage();
  53         ByteBuf buffer = Unpooled.buffer();
  54         for (final Requests req : init.getRequests()) {
  55             serializeRequest(req, buffer);
  56         }
  57         MessageUtil.formatMessage(TYPE, buffer, out);
  58     }
  59
  60     protected void serializeRequest(final Requests req, final ByteBuf buffer) {
  61         serializeObject(req.getSrp(), buffer);
  62         serializeObject(req.getLsp(), buffer);
  63         if (req.getEndpointsObj() != null) {
  64             serializeObject(req.getEndpointsObj(), buffer);
  65         }
  66         if (req.getEro() != null) {
  67             serializeObject(req.getEro(), buffer);
  68         }
  69         if (req.getLspa() != null) {
  70             serializeObject(req.getLspa(), buffer);
  71         }
  72         if (req.getBandwidth() != null) {
  73             serializeObject(req.getBandwidth(), buffer);
  74         }
  75         if (req.getMetrics() != null && !req.getMetrics().isEmpty()) {
  76             for (final Metrics m : req.getMetrics()) {
  77                 serializeObject(m.getMetric(), buffer);
  78             }
  79         }
  80         if (req.getIro() != null) {
  81             serializeObject(req.getIro(), buffer);
  82         }
  83     }
  84
  85     @Override
  86     protected Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  87         if (objects == null) {
  88             throw new IllegalArgumentException("Passed list can't be null.");
  89         }
  90         final PcinitiateMessageBuilder builder = new PcinitiateMessageBuilder();
  91         final List<Requests> reqs = Lists.newArrayList();
  92         Requests req = null;
  93         while (!objects.isEmpty()) {
  94             req = this.getValidRequest(objects);
  95             if (req == null) {
  96                 break;
  97             }
  98             reqs.add(req);
  99         }
 100         builder.setRequests(reqs);
 101         return new PcinitiateBuilder().setPcinitiateMessage(builder.build()).build();
 102     }
 103
 104     protected Requests getValidRequest(final List<Object> objects) {
 105         final RequestsBuilder builder = new RequestsBuilder();
 106         builder.setSrp((Srp) objects.get(0));
 107         objects.remove(0);
 108
 109         builder.setLsp((Lsp) objects.get(0));
 110         objects.remove(0);
 111
 112         final List<Metrics> metrics = Lists.newArrayList();
 113
 114         Object obj;
 115         State state = State.Init;
 116         while (!objects.isEmpty() && !state.equals(State.End)) {
 117             obj = objects.get(0);
 118
 119             switch (state) {
 120             case Init:
 121                 state = State.EndpointsIn;
 122                 if (obj instanceof EndpointsObj) {
 123                     builder.setEndpointsObj((EndpointsObj) obj);
 124                     break;
 125                 }
 126             case EndpointsIn:
 127                 state = State.EroIn;
 128                 if (obj instanceof Ero) {
 129                     builder.setEro((Ero) obj);
 130                     break;
 131                 }
 132             case EroIn:
 133                 state = State.LspaIn;
 134                 if (obj instanceof Lspa) {
 135                     builder.setLspa((Lspa) obj);
 136                     break;
 137                 }
 138             case LspaIn:
 139                 state = State.BandwidthIn;
 140                 if (obj instanceof Bandwidth) {
 141                     builder.setBandwidth((Bandwidth) obj);
 142                     break;
 143                 }
 144             case BandwidthIn:
 145                 state = State.MetricIn;
 146                 if (obj instanceof Metric) {
 147                     metrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 148                     state = State.BandwidthIn;
 149                     break;
 150                 }
 151             case MetricIn:
 152                 state = State.IroIn;
 153                 if (obj instanceof Iro) {
 154                     builder.setIro((Iro) obj);
 155                     break;
 156                 }
 157             case IroIn:
 158                 state = State.End;
 159                 break;
 160             case End:
 161                 break;
 162             }
 163             if (!state.equals(State.End)) {
 164                 objects.remove(0);
 165             }
 166         }
 167         builder.setMetrics(metrics);
 168         return builder.build();
 169     }
 170
 171     private enum State {
 172         Init, EndpointsIn, EroIn, LspaIn, BandwidthIn, MetricIn, IroIn, End
 173     }
 174 }