2 * Copyright (c) 2015 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.spi;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.ero.Subobject;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.ero.SubobjectBuilder;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.PathKey;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.PceId;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.SubobjectType;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.subobjects.subobject.type.PathKeyCase;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.subobjects.subobject.type.PathKeyCaseBuilder;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.subobjects.subobject.type.path.key._case.PathKeyBuilder;
22 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
25 * Parser for {@link PathKey}.
27 public abstract class AbstractEROPathKeySubobjectParser implements EROSubobjectParser, EROSubobjectSerializer {
28 public static final int TYPE_32 = 64;
29 public static final int TYPE_128 = 65;
31 protected static final int PCE_ID_F_LENGTH = 4;
32 protected static final int PCE128_ID_F_LENGTH = 16;
33 protected static final int CONTENT128_LENGTH = 2 + PCE128_ID_F_LENGTH;
34 protected static final int CONTENT_LENGTH = 2 + PCE_ID_F_LENGTH;
36 protected abstract byte[] readPceId(ByteBuf buffer);
38 protected abstract void checkContentLength(int length) throws PCEPDeserializerException;
41 public final Subobject parseSubobject(final ByteBuf buffer, final boolean loose) throws PCEPDeserializerException {
42 checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
43 checkContentLength(buffer.readableBytes());
44 return new SubobjectBuilder()
46 .setSubobjectType(new PathKeyCaseBuilder()
47 .setPathKey(new PathKeyBuilder()
48 .setPathKey(new PathKey(ByteBufUtils.readUint16(buffer)))
49 .setPceId(new PceId(readPceId(buffer)))
56 public final void serializeSubobject(final Subobject subobject, final ByteBuf buffer) {
57 final SubobjectType type = subobject.getSubobjectType();
58 checkArgument(type instanceof PathKeyCase, "Unknown subobject instance. Passed %s. Needed PathKey.",
60 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route
61 .subobjects.subobject.type.path.key._case.PathKey pk = ((PathKeyCase) type).getPathKey();
63 final PathKey pathKey = pk.getPathKey();
64 checkArgument(pathKey != null, "PathKey is mandatory.");
65 final byte[] pceID = pk.getPceId().getValue();
66 checkArgument(pceID.length == PCE_ID_F_LENGTH || pceID.length == PCE128_ID_F_LENGTH,
67 "PceId 32/128 Bit required.");
68 final ByteBuf body = Unpooled.buffer();
69 ByteBufUtils.write(body, pathKey.getValue());
70 body.writeBytes(pceID);
71 EROSubobjectUtil.formatSubobject(pceID.length == PCE_ID_F_LENGTH ? TYPE_32 : TYPE_128, subobject.getLoose(),