1 package org.opendaylight.controller.sal.rest.impl;
3 import static org.opendaylight.controller.sal.restconf.impl.MediaTypes.API;
5 import java.io.IOException;
6 import java.io.OutputStream;
7 import java.lang.annotation.Annotation;
8 import java.lang.reflect.Type;
10 import javax.ws.rs.Produces;
11 import javax.ws.rs.WebApplicationException;
12 import javax.ws.rs.core.MediaType;
13 import javax.ws.rs.core.MultivaluedMap;
14 import javax.ws.rs.core.Response;
15 import javax.ws.rs.ext.MessageBodyWriter;
16 import javax.ws.rs.ext.Provider;
17 import javax.xml.transform.OutputKeys;
18 import javax.xml.transform.Transformer;
19 import javax.xml.transform.TransformerException;
20 import javax.xml.transform.TransformerFactory;
21 import javax.xml.transform.dom.DOMSource;
22 import javax.xml.transform.stream.StreamResult;
24 import org.opendaylight.controller.sal.rest.api.RestconfService;
25 import org.opendaylight.controller.sal.restconf.impl.StructuredData;
26 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
27 import org.opendaylight.yangtools.yang.data.impl.NodeUtils;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30 import org.w3c.dom.Document;
33 @Produces({API+RestconfService.XML})
34 public enum StructuredDataToXmlProvider implements MessageBodyWriter<StructuredData> {
37 private final static Logger logger = LoggerFactory.getLogger(StructuredDataToXmlProvider.class);
40 public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
45 public long getSize(StructuredData t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
50 public void writeTo(StructuredData t, Class<?> type, Type genericType, Annotation[] annotations,
51 MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
52 throws IOException, WebApplicationException {
53 CompositeNode data = t.getData();
55 throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND).build());
58 Document domTree = NodeUtils.buildShadowDomTree(data);
60 TransformerFactory tf = TransformerFactory.newInstance();
61 Transformer transformer = tf.newTransformer();
62 transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
63 transformer.setOutputProperty(OutputKeys.METHOD, "xml");
64 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
65 transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
66 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
67 transformer.transform(new DOMSource(domTree), new StreamResult(entityStream));
68 } catch (TransformerException e) {
69 logger.error("Error during translation of Document to OutputStream", e);
70 throw new WebApplicationException(Response.status(Response.Status.INTERNAL_SERVER_ERROR).build());