Fix license header violations in sal-rest-connector
[controller.git] / opendaylight / md-sal / sal-rest-connector / src / main / java / org / opendaylight / controller / sal / rest / impl / NormalizedNodeXmlBodyWriter.java
index ef12f93fa4359f5ea82d945411a96950d0478d2b..6d04baf0fe9058e442b7d1b9dc083e54d2058fe5 100644 (file)
  */
 package org.opendaylight.controller.sal.rest.impl;
 
+import com.google.common.base.Optional;
+import com.google.common.base.Throwables;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Type;
+import javanet.staxutils.IndentingXMLStreamWriter;
 import javax.ws.rs.Produces;
 import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.MultivaluedMap;
-import javax.ws.rs.core.Response;
 import javax.ws.rs.ext.MessageBodyWriter;
 import javax.ws.rs.ext.Provider;
+import javax.xml.XMLConstants;
 import javax.xml.stream.FactoryConfigurationError;
 import javax.xml.stream.XMLOutputFactory;
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.XMLStreamWriter;
 import org.opendaylight.controller.sal.rest.api.Draft02;
+import org.opendaylight.controller.sal.rest.api.RestconfNormalizedNodeWriter;
 import org.opendaylight.controller.sal.rest.api.RestconfService;
 import org.opendaylight.controller.sal.restconf.impl.InstanceIdentifierContext;
 import org.opendaylight.controller.sal.restconf.impl.NormalizedNodeContext;
-import org.opendaylight.controller.sal.restconf.impl.RestconfDocumentedException;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
 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.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
+import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
 
 @Provider
 @Produces({ Draft02.MediaTypes.API + RestconfService.XML, Draft02.MediaTypes.DATA + RestconfService.XML,
-    Draft02.MediaTypes.OPERATION + RestconfService.XML, MediaType.APPLICATION_XML, MediaType.TEXT_XML })
-
+        Draft02.MediaTypes.OPERATION + RestconfService.XML, MediaType.APPLICATION_XML, MediaType.TEXT_XML })
 public class NormalizedNodeXmlBodyWriter implements MessageBodyWriter<NormalizedNodeContext> {
 
-
     private static final XMLOutputFactory XML_FACTORY;
 
     static {
-        XML_FACTORY  = XMLOutputFactory.newFactory();
+        XML_FACTORY = XMLOutputFactory.newFactory();
         XML_FACTORY.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, true);
     }
 
-
     @Override
-    public boolean isWriteable(final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType) {
+    public boolean isWriteable(final Class<?> type, final Type genericType, final Annotation[] annotations,
+            final MediaType mediaType) {
         return type.equals(NormalizedNodeContext.class);
     }
 
     @Override
-    public long getSize(final NormalizedNodeContext t, final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType) {
+    public long getSize(final NormalizedNodeContext t, final Class<?> type, final Type genericType,
+            final Annotation[] annotations, final MediaType mediaType) {
         return -1;
     }
 
     @Override
-    public void writeTo(final NormalizedNodeContext t, final Class<?> type, final Type genericType, final Annotation[] annotations,
-            final MediaType mediaType, final MultivaluedMap<String, Object> httpHeaders, final OutputStream entityStream)
-                    throws IOException, WebApplicationException {
-        InstanceIdentifierContext pathContext = t.getInstanceIdentifierContext();
+    public void writeTo(final NormalizedNodeContext t, final Class<?> type, final Type genericType,
+            final Annotation[] annotations, final MediaType mediaType,
+            final MultivaluedMap<String, Object> httpHeaders, final OutputStream entityStream) throws IOException,
+            WebApplicationException {
+        final InstanceIdentifierContext<?> pathContext = t.getInstanceIdentifierContext();
         if (t.getData() == null) {
-            throw new RestconfDocumentedException(Response.Status.NOT_FOUND);
+            return;
         }
 
         XMLStreamWriter xmlWriter;
         try {
             xmlWriter = XML_FACTORY.createXMLStreamWriter(entityStream);
-        } catch (XMLStreamException e) {
+            if (t.getWriterParameters().isPrettyPrint()) {
+                xmlWriter = new IndentingXMLStreamWriter(xmlWriter);
+            }
+        } catch (final XMLStreamException e) {
             throw new IllegalStateException(e);
-        } catch (FactoryConfigurationError e) {
+        } catch (final FactoryConfigurationError e) {
             throw new IllegalStateException(e);
         }
         NormalizedNode<?, ?> data = t.getData();
-        SchemaPath schemaPath = pathContext.getSchemaNode().getPath().getParent();
-        if(data instanceof MapEntryNode) {
-            data = ImmutableNodes.mapNodeBuilder(data.getNodeType()).addChild((MapEntryNode) data).build();
-            //schemaPath = pathContext.getSchemaNode().getPath();
-        }
+        SchemaPath schemaPath = pathContext.getSchemaNode().getPath();
 
-        NormalizedNodeStreamWriter jsonWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter,pathContext.getSchemaContext(),schemaPath);
-        NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(jsonWriter);
 
-        nnWriter.write(data);
+
+        writeNormalizedNode(xmlWriter, schemaPath, pathContext, data, t.getWriterParameters().getDepth());
+
+    }
+
+    private void writeNormalizedNode(XMLStreamWriter xmlWriter, SchemaPath schemaPath, InstanceIdentifierContext<?>
+            pathContext, NormalizedNode<?, ?> data, Optional<Integer> depth) throws IOException {
+        final RestconfNormalizedNodeWriter nnWriter;
+        final SchemaContext schemaCtx = pathContext.getSchemaContext();
+        if (SchemaPath.ROOT.equals(schemaPath)) {
+            nnWriter = createNormalizedNodeWriter(xmlWriter, schemaCtx, schemaPath, depth);
+            writeElements(xmlWriter, nnWriter, (ContainerNode) data);
+        }  else if (pathContext.getSchemaNode() instanceof RpcDefinition) {
+            nnWriter = createNormalizedNodeWriter(xmlWriter, schemaCtx,
+                    ((RpcDefinition) pathContext.getSchemaNode()).getOutput().getPath(), depth);
+            writeElements(xmlWriter, nnWriter, (ContainerNode) data);
+        } else {
+            nnWriter = createNormalizedNodeWriter(xmlWriter, schemaCtx, schemaPath.getParent(), depth);
+            if (data instanceof MapEntryNode) {
+                // Restconf allows returning one list item. We need to wrap it
+                // in map node in order to serialize it properly
+                data = ImmutableNodes.mapNodeBuilder(data.getNodeType()).addChild((MapEntryNode) data).build();
+            }
+            nnWriter.write(data);
+        }
         nnWriter.flush();
     }
+
+    private RestconfNormalizedNodeWriter createNormalizedNodeWriter(XMLStreamWriter xmlWriter,
+                                                                        SchemaContext schemaContext, SchemaPath schemaPath, Optional<Integer> depth) {
+        NormalizedNodeStreamWriter xmlStreamWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter, schemaContext, schemaPath);
+        if (depth.isPresent()) {
+            return DepthAwareNormalizedNodeWriter.forStreamWriter(xmlStreamWriter, depth.get());
+        } else {
+            return RestconfDelegatingNormalizedNodeWriter.forStreamWriter(xmlStreamWriter);
+        }
+    }
+
+    private void writeElements(final XMLStreamWriter xmlWriter, final RestconfNormalizedNodeWriter nnWriter,
+                               final ContainerNode data)
+            throws IOException {
+        try {
+            final QName name = data.getNodeType();
+            xmlWriter.writeStartElement(XMLConstants.DEFAULT_NS_PREFIX, name.getLocalName(), name.getNamespace().toString());
+            xmlWriter.writeDefaultNamespace(name.getNamespace().toString());
+            for(NormalizedNode<?,?> child : data.getValue()) {
+                nnWriter.write(child);
+            }
+            nnWriter.flush();
+            xmlWriter.writeEndElement();
+            xmlWriter.flush();
+        } catch (final XMLStreamException e) {
+            Throwables.propagate(e);
+        }
+    }
 }