openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/protocol/serialization/instructions/AbstractActionInstructionSerializer.java

   1 /*
   2  * Copyright (c) 2016 Pantheon Technologies s.r.o. 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
   9 package org.opendaylight.openflowplugin.impl.protocol.serialization.instructions;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import java.util.Optional;
  13 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
  15 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  16 import org.opendaylight.openflowjava.protocol.impl.util.InstructionConstants;
  17 import org.opendaylight.openflowplugin.impl.protocol.serialization.util.ActionUtil;
  18 import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.common.OrderComparator;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.ActionList;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.Instruction;
  21
  22 public abstract class AbstractActionInstructionSerializer extends AbstractInstructionSerializer implements
  23         SerializerRegistryInjector {
  24
  25     private SerializerRegistry registry;
  26
  27     @Override
  28     public void serialize(Instruction input, ByteBuf outBuffer) {
  29         outBuffer.writeShort(getType());
  30     }
  31
  32     /**
  33      * Try to write list of OpenFlowPlugin actions to output buffer.
  34      *
  35      * @param actions List of OpenFlowPlugin actions
  36      * @param outBuffer output buffer
  37      * @param startIndex start index of byte buffer
  38      */
  39     protected void writeActions(ActionList actions, short version, ByteBuf outBuffer, int startIndex) {
  40         Optional.ofNullable(actions).flatMap(as -> Optional.ofNullable(as.getAction())).map(as -> {
  41             final int lengthIndex = outBuffer.writerIndex();
  42             outBuffer.writeShort(EncodeConstants.EMPTY_LENGTH);
  43             outBuffer.writeZero(InstructionConstants.PADDING_IN_ACTIONS_INSTRUCTION);
  44             as.stream().sorted(OrderComparator.build()).forEach(a -> ActionUtil
  45                     .writeAction(a.getAction(), version, registry, outBuffer));
  46             outBuffer.setShort(lengthIndex, outBuffer.writerIndex() - startIndex);
  47             return actions;
  48         }).orElseGet(() -> {
  49             outBuffer.writeShort(getLength());
  50             outBuffer.writeZero(InstructionConstants.PADDING_IN_ACTIONS_INSTRUCTION);
  51             return actions;
  52         });
  53     }
  54
  55     @Override
  56     public void injectSerializerRegistry(SerializerRegistry serializerRegistry) {
  57         registry = serializerRegistry;
  58     }
  59
  60 }