opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/NormalizedNodeXMLOutput.java

   1 /*
   2  * Copyright (c) 2016 Brocade Communications Systems, Inc. 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 package org.opendaylight.controller.cluster.datastore.utils;
   9
  10 import java.io.File;
  11 import java.io.FileOutputStream;
  12 import java.io.IOException;
  13 import java.io.OutputStream;
  14 import javax.xml.stream.XMLOutputFactory;
  15 import javax.xml.stream.XMLStreamException;
  16 import javax.xml.stream.XMLStreamWriter;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  18 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  19 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
  20 import org.opendaylight.yangtools.yang.data.impl.codec.xml.XMLStreamNormalizedNodeStreamWriter;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23 import javanet.staxutils.IndentingXMLStreamWriter;
  24
  25 /**
  26  * Utility class to output NormalizedNodes as XML.
  27  *
  28  * @author Thomas Pantelis
  29  */
  30 public final class NormalizedNodeXMLOutput {
  31     private static final Logger LOG = LoggerFactory.getLogger(NormalizedNodeXMLOutput.class);
  32
  33     private NormalizedNodeXMLOutput() {
  34     }
  35
  36     public static void toStream(OutputStream outStream, NormalizedNode<?, ?> node)
  37             throws XMLStreamException, IOException {
  38         XMLOutputFactory xmlFactory = XMLOutputFactory.newFactory();
  39         xmlFactory.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, true);
  40         XMLStreamWriter xmlWriter = xmlFactory.createXMLStreamWriter(outStream);
  41
  42         IndentingXMLStreamWriter indenting = new IndentingXMLStreamWriter(xmlWriter);
  43         try(NormalizedNodeStreamWriter streamWriter = XMLStreamNormalizedNodeStreamWriter.createSchemaless(
  44                 indenting)) {
  45             NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(streamWriter);
  46             nodeWriter.write(node);
  47             nodeWriter.flush();
  48         }
  49     }
  50
  51     public static void toFile(File file, NormalizedNode<?, ?> node) {
  52         try(FileOutputStream outStream = new FileOutputStream(file)) {
  53             toStream(outStream, node);
  54         } catch(IOException | XMLStreamException e) {
  55             LOG.error("Error writing NormalizedNode to file {}", file, e);
  56         }
  57     }
  58 }