2 * Copyright (c) 2013 Pantheon Technologies s.r.o. 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
9 package org.opendaylight.openflowjava.protocol.impl.util;
11 import io.netty.buffer.ByteBuf;
13 import java.util.ArrayList;
14 import java.util.List;
16 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
17 import org.opendaylight.openflowjava.protocol.api.extensibility.HeaderDeserializer;
18 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
19 import org.opendaylight.openflowjava.protocol.api.keys.MessageCodeKey;
20 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
21 import org.opendaylight.yangtools.yang.binding.DataObject;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 * @author michal.polkorab
29 public final class ListDeserializer {
30 private static final Logger LOG = LoggerFactory.getLogger(ListDeserializer.class);
32 private ListDeserializer() {
33 throw new UnsupportedOperationException("Utility class shouldn't be instantiated");
37 * Deserializes items into list
38 * @param version openflow wire version
39 * @param length length of list in ByteBuf (bytes)
40 * @param input input buffer
41 * @param keyMaker creates keys for deserializer lookup
42 * @param registry stores deserializers
43 * @return list of items
45 public static <E extends DataObject> List<E> deserializeList(short version, int length,
46 ByteBuf input, CodeKeyMaker keyMaker, DeserializerRegistry registry) {
48 if (input.readableBytes() > 0) {
49 items = new ArrayList<>();
50 int startIndex = input.readerIndex();
51 while ((input.readerIndex() - startIndex) < length){
52 OFDeserializer<E> deserializer = registry.getDeserializer(keyMaker.make(input));
53 E item = deserializer.deserialize(input);
61 * Deserializes headers of items into list (used in MultipartReplyMessage - Table features)
62 * @param version openflow wire version
63 * @param length length of list in ByteBuf (bytes)
64 * @param input input buffer
65 * @param keyMaker creates keys for deserializer lookup
66 * @param registry stores deserializers
67 * @return list of items
69 public static <E extends DataObject> List<E> deserializeHeaders(short version, int length,
70 ByteBuf input, CodeKeyMaker keyMaker, DeserializerRegistry registry) {
72 if (input.readableBytes() > 0) {
73 items = new ArrayList<>();
74 int startIndex = input.readerIndex();
75 while ((input.readerIndex() - startIndex) < length){
76 HeaderDeserializer<E> deserializer;
77 MessageCodeKey key = keyMaker.make(input);
79 deserializer = registry.getDeserializer(key);
80 } catch (IllegalStateException e) {
81 LOG.warn("Problem during reading table feature property. Skipping unknown feature property: {}", key);
82 input.skipBytes(2 * EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
85 E item = deserializer.deserializeHeader(input);