2 * Copyright (c) 2016 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.utils;
10 import java.io.DataOutputStream;
12 import java.io.FileOutputStream;
13 import java.io.IOException;
14 import java.nio.charset.StandardCharsets;
15 import javax.xml.stream.XMLStreamException;
16 import org.opendaylight.controller.cluster.datastore.util.AbstractDataTreeModificationCursor;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
18 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
19 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
24 * Utility class to output DataTreeModifications in readable format.
26 * @author Thomas Pantelis
28 public final class DataTreeModificationOutput {
29 private static final Logger LOG = LoggerFactory.getLogger(DataTreeModificationOutput.class);
31 private DataTreeModificationOutput() {
34 @SuppressWarnings("checkstyle:IllegalCatch")
35 public static void toFile(final File file, final DataTreeModification modification) {
36 try (FileOutputStream outStream = new FileOutputStream(file)) {
37 modification.applyToCursor(new DataTreeModificationOutputCursor(new DataOutputStream(outStream)));
38 } catch (IOException | RuntimeException e) {
39 LOG.error("Error writing DataTreeModification to file {}", file, e);
43 private static class DataTreeModificationOutputCursor extends AbstractDataTreeModificationCursor {
44 private final DataOutputStream output;
46 DataTreeModificationOutputCursor(final DataOutputStream output) {
51 public void delete(final PathArgument child) {
53 output.write("\nDELETE -> ".getBytes(StandardCharsets.UTF_8));
54 output.write(current().node(child).toString().getBytes(StandardCharsets.UTF_8));
55 output.writeByte('\n');
56 } catch (IOException e) {
57 throw new RuntimeException(e);
62 public void merge(final PathArgument child, final NormalizedNode<?, ?> data) {
63 outputPathAndNode("MERGE", child, data);
67 public void write(final PathArgument child, final NormalizedNode<?, ?> data) {
68 outputPathAndNode("WRITE", child, data);
71 private void outputPathAndNode(final String name, final PathArgument child, final NormalizedNode<?, ?> data) {
73 output.writeByte('\n');
74 output.write(name.getBytes(StandardCharsets.UTF_8));
75 output.write(" -> ".getBytes(StandardCharsets.UTF_8));
76 output.write(current().node(child).toString().getBytes(StandardCharsets.UTF_8));
77 output.write(": \n".getBytes(StandardCharsets.UTF_8));
78 NormalizedNodeXMLOutput.toStream(output, data);
79 output.writeByte('\n');
80 } catch (IOException | XMLStreamException e) {
81 throw new RuntimeException(e);