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             serializeObject(req.getEro(), buffer);
  53             serializeObject(req.getBandwidth(), buffer);
  54             if (req.getMetrics() != null && !req.getMetrics().isEmpty()) {
  55                 for (final Metrics m : req.getMetrics()) {
  56                     serializeObject(m.getMetric(), buffer);
  57                 }
  58             }
  59         }
  60         MessageUtil.formatMessage(TYPE, buffer, out);
  61     }
  62
  63     @Override
  64     protected Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  65         if (objects == null) {
  66             throw new IllegalArgumentException("Passed list can't be null.");
  67         }
  68         final PcinitiateMessageBuilder builder = new PcinitiateMessageBuilder();
  69         final List<Requests> reqs = Lists.newArrayList();
  70         while (!objects.isEmpty()) {
  71             reqs.add(this.getValidRequest(objects));
  72         }
  73         builder.setRequests(reqs);
  74         return new PcinitiateBuilder().setPcinitiateMessage(builder.build()).build();
  75     }
  76
  77     private Requests getValidRequest(final List<Object> objects) {
  78         final RequestsBuilder builder = new RequestsBuilder();
  79         builder.setEndpointsObj((EndpointsObj) objects.get(0));
  80         objects.remove(0);
  81
  82         builder.setLspa((Lspa) objects.get(0));
  83         objects.remove(0);
  84         final List<Metrics> metrics = Lists.newArrayList();
  85
  86         Object obj;
  87         State state = State.Init;
  88         while (!objects.isEmpty() && !state.equals(State.End)) {
  89             obj = objects.get(0);
  90
  91             switch (state) {
  92             case Init:
  93                 state = State.EroIn;
  94                 if (obj instanceof Ero) {
  95                     builder.setEro((Ero) obj);
  96                     break;
  97                 }
  98             case EroIn:
  99                 state = State.BandwidthIn;
 100                 if (obj instanceof Bandwidth) {
 101                     builder.setBandwidth((Bandwidth) obj);
 102                     break;
 103                 }
 104             case BandwidthIn:
 105                 state = State.MetricIn;
 106                 if (obj instanceof Metric) {
 107                     metrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 108                     state = State.BandwidthIn;
 109                     break;
 110                 }
 111             case MetricIn:
 112                 state = State.End;
 113                 break;
 114             case End:
 115                 break;
 116             }
 117             if (!state.equals(State.End)) {
 118                 objects.remove(0);
 119             }
 120         }
 121         builder.setMetrics(metrics);
 122         return builder.build();
 123     }
 124
 125     private enum State {
 126         Init, EroIn, BandwidthIn, MetricIn, End
 127     }
 128 }