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
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15
  16 import java.util.List;
  17
  18 import org.opendaylight.protocol.pcep.spi.AbstractMessageParser;
  19 import org.opendaylight.protocol.pcep.spi.MessageUtil;
  20 import org.opendaylight.protocol.pcep.spi.ObjectRegistry;
  21 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.Pcinitiate;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.PcinitiateBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.PcinitiateMessageBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.pcinitiate.message.Requests;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.pcinitiate.message.RequestsBuilder;
  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.lsp.attributes.Metrics;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lsp.attributes.MetricsBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.lspa.object.Lspa;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.metric.object.Metric;
  36
  37 /**
  38  * Parser for {@link Pcinitiate}
  39  */
  40 public class PcinitiateMessageParser extends AbstractMessageParser {
  41     public static final int TYPE = 12;
  42
  43     public PcinitiateMessageParser(final ObjectRegistry registry) {
  44         super(registry);
  45     }
  46
  47     @Override
  48     public void serializeMessage(final Message message, final ByteBuf out) {
  49         Preconditions.checkArgument(message instanceof Pcinitiate, "Wrong instance of Message. Passed instance of %s. Need Pcinitiate.", message.getClass());
  50         final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated._00.rev140113.pcinitiate.message.PcinitiateMessage init = ((Pcinitiate) message).getPcinitiateMessage();
  51         ByteBuf buffer = Unpooled.buffer();
  52         for (final Requests req : init.getRequests()) {
  53             serializeObject(req.getEndpointsObj(), buffer);
  54             serializeObject(req.getLspa(), buffer);
  55             if (req.getEro() != null) {
  56                 serializeObject(req.getEro(), buffer);
  57             }
  58             if (req.getBandwidth() != null) {
  59                 serializeObject(req.getBandwidth(), buffer);
  60             }
  61             if (req.getMetrics() != null && !req.getMetrics().isEmpty()) {
  62                 for (final Metrics m : req.getMetrics()) {
  63                     serializeObject(m.getMetric(), buffer);
  64                 }
  65             }
  66         }
  67         MessageUtil.formatMessage(TYPE, buffer, out);
  68     }
  69
  70     @Override
  71     protected Message validate(final List<Object> objects, final List<Message> errors) throws PCEPDeserializerException {
  72         if (objects == null) {
  73             throw new IllegalArgumentException("Passed list can't be null.");
  74         }
  75         final PcinitiateMessageBuilder builder = new PcinitiateMessageBuilder();
  76         final List<Requests> reqs = Lists.newArrayList();
  77         Requests req = null;
  78         while (!objects.isEmpty()) {
  79             req = this.getValidRequest(objects);
  80             if (req == null) {
  81                 break;
  82             }
  83             reqs.add(req);
  84         }
  85         builder.setRequests(reqs);
  86         return new PcinitiateBuilder().setPcinitiateMessage(builder.build()).build();
  87     }
  88
  89     private Requests getValidRequest(final List<Object> objects) {
  90         final RequestsBuilder builder = new RequestsBuilder();
  91         builder.setEndpointsObj((EndpointsObj) objects.get(0));
  92         objects.remove(0);
  93
  94         builder.setLspa((Lspa) objects.get(0));
  95         objects.remove(0);
  96         final List<Metrics> metrics = Lists.newArrayList();
  97
  98         Object obj;
  99         State state = State.Init;
 100         while (!objects.isEmpty() && !state.equals(State.End)) {
 101             obj = objects.get(0);
 102
 103             switch (state) {
 104             case Init:
 105                 state = State.EroIn;
 106                 if (obj instanceof Ero) {
 107                     builder.setEro((Ero) obj);
 108                     break;
 109                 }
 110             case EroIn:
 111                 state = State.BandwidthIn;
 112                 if (obj instanceof Bandwidth) {
 113                     builder.setBandwidth((Bandwidth) obj);
 114                     break;
 115                 }
 116             case BandwidthIn:
 117                 state = State.MetricIn;
 118                 if (obj instanceof Metric) {
 119                     metrics.add(new MetricsBuilder().setMetric((Metric) obj).build());
 120                     state = State.BandwidthIn;
 121                     break;
 122                 }
 123             case MetricIn:
 124                 state = State.End;
 125                 break;
 126             case End:
 127                 break;
 128             }
 129             if (!state.equals(State.End)) {
 130                 objects.remove(0);
 131             }
 132         }
 133         builder.setMetrics(metrics);
 134         return builder.build();
 135     }
 136
 137     private enum State {
 138         Init, EroIn, BandwidthIn, MetricIn, End
 139     }
 140 }