opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeXmlBodyWriter.java

   1 /*
   2  * Copyright (c) 2014 Cisco 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.sal.rest.impl;
   9
  10 import java.io.IOException;
  11 import java.io.OutputStream;
  12 import java.lang.annotation.Annotation;
  13 import java.lang.reflect.Type;
  14 import javax.ws.rs.Produces;
  15 import javax.ws.rs.WebApplicationException;
  16 import javax.ws.rs.core.MediaType;
  17 import javax.ws.rs.core.MultivaluedMap;
  18 import javax.ws.rs.core.Response;
  19 import javax.ws.rs.ext.MessageBodyWriter;
  20 import javax.ws.rs.ext.Provider;
  21 import javax.xml.stream.FactoryConfigurationError;
  22 import javax.xml.stream.XMLOutputFactory;
  23 import javax.xml.stream.XMLStreamException;
  24 import javax.xml.stream.XMLStreamWriter;
  25 import org.opendaylight.controller.sal.rest.api.Draft02;
  26 import org.opendaylight.controller.sal.rest.api.RestconfService;
  27 import org.opendaylight.controller.sal.restconf.impl.InstanceIdentifierContext;
  28 import org.opendaylight.controller.sal.restconf.impl.NormalizedNodeContext;
  29 import org.opendaylight.controller.sal.restconf.impl.RestconfDocumentedException;
  30 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  31 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  32 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  33 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
  34 import org.opendaylight.yangtools.yang.data.impl.codec.xml.XMLStreamNormalizedNodeStreamWriter;
  35 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  36 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  37
  38 @Provider
  39 @Produces({ Draft02.MediaTypes.API + RestconfService.XML, Draft02.MediaTypes.DATA + RestconfService.XML,
  40     Draft02.MediaTypes.OPERATION + RestconfService.XML, MediaType.APPLICATION_XML, MediaType.TEXT_XML })
  41
  42 public class NormalizedNodeXmlBodyWriter implements MessageBodyWriter<NormalizedNodeContext> {
  43
  44
  45     private static final XMLOutputFactory XML_FACTORY;
  46
  47     static {
  48         XML_FACTORY  = XMLOutputFactory.newFactory();
  49         XML_FACTORY.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, true);
  50     }
  51
  52
  53     @Override
  54     public boolean isWriteable(final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType) {
  55         return type.equals(NormalizedNodeContext.class);
  56     }
  57
  58     @Override
  59     public long getSize(final NormalizedNodeContext t, final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType) {
  60         return -1;
  61     }
  62
  63     @Override
  64     public void writeTo(final NormalizedNodeContext t, final Class<?> type, final Type genericType, final Annotation[] annotations,
  65             final MediaType mediaType, final MultivaluedMap<String, Object> httpHeaders, final OutputStream entityStream)
  66                     throws IOException, WebApplicationException {
  67         InstanceIdentifierContext pathContext = t.getInstanceIdentifierContext();
  68         if (t.getData() == null) {
  69             throw new RestconfDocumentedException(Response.Status.NOT_FOUND);
  70         }
  71
  72         XMLStreamWriter xmlWriter;
  73         try {
  74             xmlWriter = XML_FACTORY.createXMLStreamWriter(entityStream);
  75         } catch (XMLStreamException e) {
  76             throw new IllegalStateException(e);
  77         } catch (FactoryConfigurationError e) {
  78             throw new IllegalStateException(e);
  79         }
  80         NormalizedNode<?, ?> data = t.getData();
  81         SchemaPath schemaPath = pathContext.getSchemaNode().getPath().getParent();
  82         if(data instanceof MapEntryNode) {
  83             data = ImmutableNodes.mapNodeBuilder(data.getNodeType()).addChild((MapEntryNode) data).build();
  84             //schemaPath = pathContext.getSchemaNode().getPath();
  85         }
  86
  87         NormalizedNodeStreamWriter jsonWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter,pathContext.getSchemaContext(),schemaPath);
  88         NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(jsonWriter);
  89
  90         nnWriter.write(data);
  91         nnWriter.flush();
  92     }
  93 }