pcep/ietf-stateful02/src/main/java/org/opendaylight/protocol/pcep/crabbe/initiated00/PcinitiateMessageParser.java

   1 /*
   2  * Copyright (c) 2014 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.crabbe.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._00.rev140113.Pcinitiate;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.PcinitiateBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.PcinitiateMessageBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.pcinitiate.message.Requests;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.pcinitiate.message.RequestsBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.bandwidth.object.Bandwidth;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.EndpointsObj;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.Ero;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.Metrics;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
  33
  34 /**
  35  * Parser for {@link Pcinitiate}
  36  */
  37 public class PcinitiateMessageParser extends AbstractMessageParser {
  38     public static final int TYPE = 12;
  39
  40     public PcinitiateMessageParser(final ObjectRegistry registry) {
  41         super(registry);
  42     }
  43
  44     @Override
  45     public void serializeMessage(final Message message, final ByteBuf out) {
  46         Preconditions.checkArgument(message instanceof Pcinitiate, "Wrong instance of Message. Passed instance of %s. Need Pcinitiate.", message.getClass());
  47         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.PcinitiateMessage init = ((Pcinitiate) message).getPcinitiateMessage();
  48         final ByteBuf buffer = Unpooled.buffer();
  49         for (final Requests req : init.getRequests()) {
  50             serializeObject(req.getEndpointsObj(), buffer);
  51             serializeObject(req.getLspa(), buffer);
  52             if (req.getEro() != null) {
  53                 serializeObject(req.getEro(), buffer);
  54             }
  55             if (req.getBandwidth() != null) {
  56                 serializeObject(req.getBandwidth(), buffer);
  57             }
  58             if (req.getMetrics() != null && !req.getMetrics().isEmpty()) {
  59                 for (final Metrics m : req.getMetrics()) {
  60                     serializeObject(m.getMetric(), buffer);
  61                 }
  62             }
  63         }
  64         MessageUtil.formatMessage(TYPE, buffer, out);
  65     }
  66
  67     @Override
  68     protected Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  69         if (objects == null) {
  70             throw new IllegalArgumentException("Passed list can't be null.");
  71         }
  72         final PcinitiateMessageBuilder builder = new PcinitiateMessageBuilder();
  73         final List<Requests> reqs = Lists.newArrayList();
  74         while (!objects.isEmpty()) {
  75             reqs.add(this.getValidRequest(objects));
  76         }
  77         builder.setRequests(reqs);
  78         return new PcinitiateBuilder().setPcinitiateMessage(builder.build()).build();
  79     }
  80
  81     private Requests getValidRequest(final List<Object> objects) {
  82         final RequestsBuilder builder = new RequestsBuilder();
  83         builder.setEndpointsObj((EndpointsObj) objects.get(0));
  84         objects.remove(0);
  85
  86         builder.setLspa((Lspa) objects.get(0));
  87         objects.remove(0);
  88         final List<Metrics> metrics = Lists.newArrayList();
  89
  90         Object obj;
  91         State state = State.Init;
  92         while (!objects.isEmpty() && !state.equals(State.End)) {
  93             obj = objects.get(0);
  94
  95             switch (state) {
  96             case Init:
  97                 state = State.EroIn;
  98                 if (obj instanceof Ero) {
  99                     builder.setEro((Ero) obj);
 100                     break;
 101                 }
 102             case EroIn:
 103                 state = State.BandwidthIn;
 104                 if (obj instanceof Bandwidth) {
 105                     builder.setBandwidth((Bandwidth) obj);
 106                     break;
 107                 }
 108             case BandwidthIn:
 109                 state = State.MetricIn;
 110                 if (obj instanceof Metric) {
 111                     metrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 112                     state = State.BandwidthIn;
 113                     break;
 114                 }
 115             case MetricIn:
 116                 state = State.End;
 117                 break;
 118             case End:
 119                 break;
 120             }
 121             if (!state.equals(State.End)) {
 122                 objects.remove(0);
 123             }
 124         }
 125         builder.setMetrics(metrics);
 126         return builder.build();
 127     }
 128
 129     private enum State {
 130         Init, EroIn, BandwidthIn, MetricIn, End
 131     }
 132 }