Write failed node data on recovery to a file

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

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/NormalizedNodeXMLOutput.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/NormalizedNodeXMLOutput.java
new file mode 100644 (file)
index 0000000..ffcc00e
--- /dev/null
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/NormalizedNodeXMLOutput.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016 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.utils;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import javax.xml.stream.XMLOutputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
+import org.opendaylight.yangtools.yang.data.impl.codec.xml.XMLStreamNormalizedNodeStreamWriter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import javanet.staxutils.IndentingXMLStreamWriter;
+
+/**
+ * Utility class to output NormalizedNodes as XML.
+ *
+ * @author Thomas Pantelis
+ */
+public final class NormalizedNodeXMLOutput {
+    private static final Logger LOG = LoggerFactory.getLogger(NormalizedNodeXMLOutput.class);
+
+    private NormalizedNodeXMLOutput() {
+    }
+
+    public static void toStream(OutputStream outStream, NormalizedNode<?, ?> node)
+            throws XMLStreamException, IOException {
+        XMLOutputFactory xmlFactory = XMLOutputFactory.newFactory();
+        xmlFactory.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, true);
+        XMLStreamWriter xmlWriter = xmlFactory.createXMLStreamWriter(outStream);
+
+        IndentingXMLStreamWriter indenting = new IndentingXMLStreamWriter(xmlWriter);
+        try(NormalizedNodeStreamWriter streamWriter = XMLStreamNormalizedNodeStreamWriter.createSchemaless(
+                indenting)) {
+            NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(streamWriter);
+            nodeWriter.write(node);
+            nodeWriter.flush();
+        }
+    }
+
+    public static void toFile(File file, NormalizedNode<?, ?> node) {
+        try(FileOutputStream outStream = new FileOutputStream(file)) {
+            toStream(outStream, node);
+        } catch(IOException | XMLStreamException e) {
+            LOG.error("Error writing NormalizedNode to file {}", file, e);
+        }
+    }
+}