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