Java tutorial
/* * Copyright (c) 2013 Pantheon Technologies s.r.o. 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.openflowjava.protocol.impl.deserialization.instruction; import io.netty.buffer.ByteBuf; import org.opendaylight.openflowjava.protocol.api.extensibility.HeaderDeserializer; import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer; import org.opendaylight.openflowjava.protocol.impl.util.EncodeConstants; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.ApplyActions; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.ClearActions; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.GotoTable; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.Meter; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.WriteActions; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.WriteMetadata; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.instructions.grouping.Instruction; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.instructions.grouping.InstructionBuilder; /** * @author michal.polkorab * */ public abstract class AbstractInstructionDeserializer implements OFDeserializer<Instruction>, HeaderDeserializer<Instruction> { @Override public Instruction deserializeHeader(ByteBuf rawMessage) { InstructionBuilder builder = processHeader(rawMessage); rawMessage.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES); return builder.build(); } protected InstructionBuilder processHeader(ByteBuf input) { InstructionBuilder builder = new InstructionBuilder(); int type = input.readUnsignedShort(); switch (type) { case 1: builder.setType(GotoTable.class); break; case 2: builder.setType(WriteMetadata.class); break; case 3: builder.setType(WriteActions.class); break; case 4: builder.setType(ApplyActions.class); break; case 5: builder.setType(ClearActions.class); break; case 6: builder.setType(Meter.class); break; default: throw new IllegalStateException("Unknown instruction type received, type: " + type); } return builder; } }