+/*
+ * Copyright (c) 2014 Brocade Communications 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.controller.cluster.datastore.node.utils.stream;
+
+import com.google.common.base.Preconditions;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInput;
+import java.io.DataInputStream;
+import java.io.DataOutput;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+/**
+ * Provides various utility methods for serialization and de-serialization.
+ *
+ * @author Thomas Pantelis
+ */
+public final class SerializationUtils {
+ public static final ThreadLocal<NormalizedNodeDataOutput> REUSABLE_WRITER_TL = new ThreadLocal<>();
+ public static final ThreadLocal<NormalizedNodeDataInput> REUSABLE_READER_TL = new ThreadLocal<>();
+
+ public interface Applier<T> {
+ void apply(T instance, YangInstanceIdentifier path, NormalizedNode<?, ?> node);
+ }
+
+ private static NormalizedNodeDataOutput streamWriter(DataOutput out) throws IOException {
+ NormalizedNodeDataOutput streamWriter = REUSABLE_WRITER_TL.get();
+ if (streamWriter == null) {
+ streamWriter = NormalizedNodeInputOutput.newDataOutput(out);
+ }
+
+ return streamWriter;
+ }
+
+ private static NormalizedNodeDataInput streamReader(DataInput in) throws IOException {
+ NormalizedNodeDataInput streamReader = REUSABLE_READER_TL.get();
+ if (streamReader == null) {
+ streamReader = NormalizedNodeInputOutput.newDataInput(in);
+ }
+
+ return streamReader;
+ }
+
+ public static void serializePathAndNode(YangInstanceIdentifier path, NormalizedNode<?, ?> node,
+ DataOutput out) {
+ Preconditions.checkNotNull(path);
+ Preconditions.checkNotNull(node);
+ try {
+ NormalizedNodeDataOutput streamWriter = streamWriter(out);
+ streamWriter.writeNormalizedNode(node);
+ streamWriter.writeYangInstanceIdentifier(path);
+ } catch (IOException e) {
+ throw new IllegalArgumentException(String.format("Error serializing path %s and Node %s",
+ path, node), e);
+ }
+ }
+
+ public static <T> void deserializePathAndNode(DataInput in, T instance, Applier<T> applier) {
+ try {
+ NormalizedNodeDataInput streamReader = streamReader(in);
+ NormalizedNode<?, ?> node = streamReader.readNormalizedNode();
+ YangInstanceIdentifier path = streamReader.readYangInstanceIdentifier();
+ applier.apply(instance, path, node);
+ } catch (IOException e) {
+ throw new IllegalArgumentException("Error deserializing path and Node", e);
+ }
+ }
+
+ private static NormalizedNode<?, ?> tryDeserializeNormalizedNode(DataInput in) throws IOException {
+ boolean present = in.readBoolean();
+ if (present) {
+ NormalizedNodeDataInput streamReader = streamReader(in);
+ return streamReader.readNormalizedNode();
+ }
+
+ return null;
+ }
+
+ public static NormalizedNode<?, ?> deserializeNormalizedNode(DataInput in) {
+ try {
+ return tryDeserializeNormalizedNode(in);
+ } catch (IOException e) {
+ throw new IllegalArgumentException("Error deserializing NormalizedNode", e);
+ }
+ }
+
+ public static NormalizedNode<?, ?> deserializeNormalizedNode(byte [] bytes) {
+ try {
+ return tryDeserializeNormalizedNode(new DataInputStream(new ByteArrayInputStream(bytes)));
+ } catch (IOException e) {
+ throw new IllegalArgumentException("Error deserializing NormalizedNode", e);
+ }
+ }
+
+ public static void serializeNormalizedNode(NormalizedNode<?, ?> node, DataOutput out) {
+ try {
+ out.writeBoolean(node != null);
+ if (node != null) {
+ NormalizedNodeDataOutput streamWriter = streamWriter(out);
+ streamWriter.writeNormalizedNode(node);
+ }
+ } catch (IOException e) {
+ throw new IllegalArgumentException(String.format("Error serializing NormalizedNode %s",
+ node), e);
+ }
+ }
+
+ public static byte [] serializeNormalizedNode(NormalizedNode<?, ?> node) {
+ ByteArrayOutputStream bos = new ByteArrayOutputStream();
+ serializeNormalizedNode(node, new DataOutputStream(bos));
+ return bos.toByteArray();
+ }
+
+ public static void serializePath(YangInstanceIdentifier path, DataOutput out) {
+ Preconditions.checkNotNull(path);
+ try {
+ NormalizedNodeDataOutput streamWriter = streamWriter(out);
+ streamWriter.writeYangInstanceIdentifier(path);
+ } catch (IOException e) {
+ throw new IllegalArgumentException(String.format("Error serializing path %s", path), e);
+ }
+ }
+
+ public static YangInstanceIdentifier deserializePath(DataInput in) {
+ try {
+ NormalizedNodeDataInput streamReader = streamReader(in);
+ return streamReader.readYangInstanceIdentifier();
+ } catch (IOException e) {
+ throw new IllegalArgumentException("Error deserializing path", e);
+ }
+ }
+}
Code Review / controller.git / commitdiff