2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.protocol.pcep.parser.object;
10 import com.google.common.base.Preconditions;
11 import io.netty.buffer.ByteBuf;
12 import io.netty.buffer.ByteBufUtil;
13 import java.util.ArrayList;
14 import java.util.List;
15 import org.opendaylight.protocol.pcep.spi.ObjectParser;
16 import org.opendaylight.protocol.pcep.spi.ObjectSerializer;
17 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
18 import org.opendaylight.protocol.pcep.spi.RROSubobjectRegistry;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.rro.Subobject;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
23 public abstract class AbstractRROWithSubobjectsParser implements ObjectParser, ObjectSerializer {
25 private static final Logger LOG = LoggerFactory.getLogger(AbstractRROWithSubobjectsParser.class);
27 private final RROSubobjectRegistry subobjReg;
29 private static final int HEADER_LENGTH = 2;
31 protected AbstractRROWithSubobjectsParser(final RROSubobjectRegistry subobjReg) {
32 this.subobjReg = Preconditions.checkNotNull(subobjReg);
35 protected List<Subobject> parseSubobjects(final ByteBuf buffer) throws PCEPDeserializerException {
36 Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
37 final List<Subobject> subs = new ArrayList<>();
38 while (buffer.isReadable()) {
39 final int type = buffer.readUnsignedByte();
40 final int length = buffer.readUnsignedByte() - HEADER_LENGTH;
41 if (length > buffer.readableBytes()) {
42 throw new PCEPDeserializerException("Wrong length specified. Passed: " + length + "; Expected: <= "
43 + buffer.readableBytes());
45 LOG.debug("Attempt to parse subobject from bytes: {}", ByteBufUtil.hexDump(buffer));
46 final Subobject sub = this.subobjReg.parseSubobject(type, buffer.readSlice(length));
48 LOG.warn("Unknown subobject type: {}. Ignoring subobject.", type);
50 LOG.debug("Subobject was parsed. {}", sub);
57 protected final void serializeSubobject(final List<Subobject> subobjects, final ByteBuf buffer) {
58 Preconditions.checkArgument(subobjects != null && !subobjects.isEmpty(), "RRO must contain at least one subobject.");
59 for (final Subobject subobject : subobjects) {
60 this.subobjReg.serializeSubobject(subobject, buffer);