2 * Copyright (c) 2014 Brocade Communications 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.controller.cluster.datastore.node.utils.stream;
10 import com.google.common.base.Preconditions;
11 import java.io.ByteArrayInputStream;
12 import java.io.ByteArrayOutputStream;
13 import java.io.DataInput;
14 import java.io.DataInputStream;
15 import java.io.DataOutput;
16 import java.io.DataOutputStream;
17 import java.io.IOException;
18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
22 * Provides various utility methods for serialization and de-serialization.
24 * @author Thomas Pantelis
26 public final class SerializationUtils {
27 public static final ThreadLocal<NormalizedNodeDataOutput> REUSABLE_WRITER_TL = new ThreadLocal<>();
28 public static final ThreadLocal<NormalizedNodeDataInput> REUSABLE_READER_TL = new ThreadLocal<>();
30 public interface Applier<T> {
31 void apply(T instance, YangInstanceIdentifier path, NormalizedNode<?, ?> node);
34 private static NormalizedNodeDataOutput streamWriter(DataOutput out) throws IOException {
35 NormalizedNodeDataOutput streamWriter = REUSABLE_WRITER_TL.get();
36 if (streamWriter == null) {
37 streamWriter = NormalizedNodeInputOutput.newDataOutput(out);
43 private static NormalizedNodeDataInput streamReader(DataInput in) throws IOException {
44 NormalizedNodeDataInput streamReader = REUSABLE_READER_TL.get();
45 if (streamReader == null) {
46 streamReader = NormalizedNodeInputOutput.newDataInput(in);
52 public static void serializePathAndNode(YangInstanceIdentifier path, NormalizedNode<?, ?> node,
54 Preconditions.checkNotNull(path);
55 Preconditions.checkNotNull(node);
57 NormalizedNodeDataOutput streamWriter = streamWriter(out);
58 streamWriter.writeNormalizedNode(node);
59 streamWriter.writeYangInstanceIdentifier(path);
60 } catch (IOException e) {
61 throw new IllegalArgumentException(String.format("Error serializing path %s and Node %s",
66 public static <T> void deserializePathAndNode(DataInput in, T instance, Applier<T> applier) {
68 NormalizedNodeDataInput streamReader = streamReader(in);
69 NormalizedNode<?, ?> node = streamReader.readNormalizedNode();
70 YangInstanceIdentifier path = streamReader.readYangInstanceIdentifier();
71 applier.apply(instance, path, node);
72 } catch (IOException e) {
73 throw new IllegalArgumentException("Error deserializing path and Node", e);
77 private static NormalizedNode<?, ?> tryDeserializeNormalizedNode(DataInput in) throws IOException {
78 boolean present = in.readBoolean();
80 NormalizedNodeDataInput streamReader = streamReader(in);
81 return streamReader.readNormalizedNode();
87 public static NormalizedNode<?, ?> deserializeNormalizedNode(DataInput in) {
89 return tryDeserializeNormalizedNode(in);
90 } catch (IOException e) {
91 throw new IllegalArgumentException("Error deserializing NormalizedNode", e);
95 public static NormalizedNode<?, ?> deserializeNormalizedNode(byte [] bytes) {
97 return tryDeserializeNormalizedNode(new DataInputStream(new ByteArrayInputStream(bytes)));
98 } catch (IOException e) {
99 throw new IllegalArgumentException("Error deserializing NormalizedNode", e);
103 public static void serializeNormalizedNode(NormalizedNode<?, ?> node, DataOutput out) {
105 out.writeBoolean(node != null);
107 NormalizedNodeDataOutput streamWriter = streamWriter(out);
108 streamWriter.writeNormalizedNode(node);
110 } catch (IOException e) {
111 throw new IllegalArgumentException(String.format("Error serializing NormalizedNode %s",
116 public static byte [] serializeNormalizedNode(NormalizedNode<?, ?> node) {
117 ByteArrayOutputStream bos = new ByteArrayOutputStream();
118 serializeNormalizedNode(node, new DataOutputStream(bos));
119 return bos.toByteArray();
122 public static void serializePath(YangInstanceIdentifier path, DataOutput out) {
123 Preconditions.checkNotNull(path);
125 NormalizedNodeDataOutput streamWriter = streamWriter(out);
126 streamWriter.writeYangInstanceIdentifier(path);
127 } catch (IOException e) {
128 throw new IllegalArgumentException(String.format("Error serializing path %s", path), e);
132 public static YangInstanceIdentifier deserializePath(DataInput in) {
134 NormalizedNodeDataInput streamReader = streamReader(in);
135 return streamReader.readYangInstanceIdentifier();
136 } catch (IOException e) {
137 throw new IllegalArgumentException("Error deserializing path", e);