Java tutorial
/* * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.protocol.pcep.impl.subobject; import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedByte; import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedInt; import com.google.common.base.Preconditions; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException; import org.opendaylight.protocol.pcep.spi.XROSubobjectParser; import org.opendaylight.protocol.pcep.spi.XROSubobjectSerializer; import org.opendaylight.protocol.pcep.spi.XROSubobjectUtil; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.Subobject; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.SubobjectBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.ExcludeRouteSubobjects; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.SrlgId; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.SrlgSubobject; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.SrlgCase; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.SrlgCaseBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.srlg._case.SrlgBuilder; /** * Parser for {@link SrlgCase} */ public class XROSRLGSubobjectParser implements XROSubobjectParser, XROSubobjectSerializer { public static final int TYPE = 34; private static final int CONTENT_LENGTH = 6; @Override public Subobject parseSubobject(final ByteBuf buffer, final boolean mandatory) throws PCEPDeserializerException { Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty."); if (buffer.readableBytes() != CONTENT_LENGTH) { throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + "; Expected: " + CONTENT_LENGTH + "."); } final SubobjectBuilder builder = new SubobjectBuilder(); builder.setMandatory(mandatory); builder.setSubobjectType(new SrlgCaseBuilder() .setSrlg(new SrlgBuilder().setSrlgId(new SrlgId(buffer.readUnsignedInt())).build()).build()); buffer.readByte(); builder.setAttribute(ExcludeRouteSubobjects.Attribute.forValue(buffer.readUnsignedByte())); return builder.build(); } @Override public void serializeSubobject(final Subobject subobject, final ByteBuf buffer) { Preconditions.checkArgument(subobject.getSubobjectType() instanceof SrlgCase, "Unknown subobject instance. Passed %s. Needed SrlgCase.", subobject.getSubobjectType().getClass()); final SrlgSubobject specObj = ((SrlgCase) subobject.getSubobjectType()).getSrlg(); final ByteBuf body = Unpooled.buffer(CONTENT_LENGTH); Preconditions.checkArgument(specObj.getSrlgId() != null, "SrlgId is mandatory."); writeUnsignedInt(specObj.getSrlgId().getValue(), body); Preconditions.checkArgument(subobject.getAttribute() != null, "Attribute is mandatory."); writeUnsignedByte(null, body); writeUnsignedByte((short) subobject.getAttribute().getIntValue(), body); XROSubobjectUtil.formatSubobject(TYPE, subobject.isMandatory(), body, buffer); } }