From: Tony Tkacik <ttkacik@cisco.com>
Date: Wed, 3 Sep 2014 13:02:55 +0000 (+0200)
Subject: Bug 1664: Fixed JSON/XML serialization of reading mount point root data.
X-Git-Tag: release/helium~158^2
X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=commitdiff_plain;h=8536e9a45df8a13a72edb554d87cba44659160e8

Bug 1664: Fixed JSON/XML serialization of reading mount point root data.

Change-Id: I3ff08d907abc0c11e4166cc8c70695325df95868
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>
---

diff --git a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeJsonBodyWriter.java b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeJsonBodyWriter.java
index af21db8bc6..cfb5e5d7c2 100644
--- a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeJsonBodyWriter.java
+++ b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeJsonBodyWriter.java
@@ -14,6 +14,7 @@ import java.io.OutputStreamWriter;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Type;
 import java.net.URI;
+import java.util.Iterator;
 import javax.ws.rs.Produces;
 import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.MediaType;
@@ -26,6 +27,9 @@ 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.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
 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;
@@ -64,26 +68,43 @@ public class NormalizedNodeJsonBodyWriter implements MessageBodyWriter<Normalize
             throw new RestconfDocumentedException(Response.Status.NOT_FOUND);
         }
 
-
+        boolean isDataRoot = false;
         URI initialNs = null;
         outputWriter.write('{');
-        if (!SchemaPath.ROOT.equals(path)) {
+        if (SchemaPath.ROOT.equals(path)) {
+            isDataRoot = true;
+        } else {
             path = path.getParent();
             // FIXME: Add proper handling of reading root.
         }
-        if(data instanceof MapEntryNode) {
-            data = ImmutableNodes.mapNodeBuilder(data.getNodeType()).withChild(((MapEntryNode) data)).build();
-        }
         if(!schema.isAugmenting() && !(schema instanceof SchemaContext)) {
             initialNs = schema.getQName().getNamespace();
         }
         NormalizedNodeStreamWriter jsonWriter = JSONNormalizedNodeStreamWriter.create(context.getSchemaContext(),path,initialNs,outputWriter);
         NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(jsonWriter);
-        nnWriter.write(data);
+        if(isDataRoot) {
+            writeDataRoot(outputWriter,nnWriter,(ContainerNode) data);
+        } else {
+            if(data instanceof MapEntryNode) {
+                data = ImmutableNodes.mapNodeBuilder(data.getNodeType()).withChild(((MapEntryNode) data)).build();
+            }
+            nnWriter.write(data);
+        }
         nnWriter.flush();
-
         outputWriter.write('}');
         outputWriter.flush();
     }
 
+    private void writeDataRoot(OutputStreamWriter outputWriter, NormalizedNodeWriter nnWriter, ContainerNode data) throws IOException {
+        Iterator<DataContainerChild<? extends PathArgument, ?>> iterator = data.getValue().iterator();
+        while(iterator.hasNext()) {
+            DataContainerChild<? extends PathArgument, ?> child = iterator.next();
+            nnWriter.write(child);
+            nnWriter.flush();
+            if(iterator.hasNext()) {
+                outputWriter.write(",");
+            }
+        }
+    }
+
 }
diff --git a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeXmlBodyWriter.java b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeXmlBodyWriter.java
index ef12f93fa4..3a6de300a0 100644
--- a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeXmlBodyWriter.java
+++ b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/NormalizedNodeXmlBodyWriter.java
@@ -7,6 +7,7 @@
  */
 package org.opendaylight.controller.sal.rest.impl;
 
+import com.google.common.base.Throwables;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.lang.annotation.Annotation;
@@ -27,43 +28,48 @@ 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.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
 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.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 {
+    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();
         if (t.getData() == null) {
             throw new RestconfDocumentedException(Response.Status.NOT_FOUND);
@@ -78,16 +84,44 @@ public class NormalizedNodeXmlBodyWriter implements MessageBodyWriter<Normalized
             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();
+
+        boolean isDataRoot = false;
+        if (SchemaPath.ROOT.equals(schemaPath)) {
+            isDataRoot = true;
+        } else {
+            schemaPath = schemaPath.getParent();
         }
 
-        NormalizedNodeStreamWriter jsonWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter,pathContext.getSchemaContext(),schemaPath);
+        NormalizedNodeStreamWriter jsonWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter,
+                pathContext.getSchemaContext(), schemaPath);
         NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(jsonWriter);
+        if (isDataRoot) {
+            writeRootElement(xmlWriter, nnWriter, (ContainerNode) data);
+        } else {
+            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();
+        }
+    }
 
-        nnWriter.write(data);
-        nnWriter.flush();
+    private void writeRootElement(XMLStreamWriter xmlWriter, NormalizedNodeWriter nnWriter, ContainerNode data)
+            throws IOException {
+        try {
+            QName name = SchemaContext.NAME;
+            xmlWriter.writeStartElement(name.getNamespace().toString(), name.getLocalName());
+            for (DataContainerChild<? extends PathArgument, ?> child : data.getValue()) {
+                nnWriter.write(child);
+            }
+            nnWriter.flush();
+            xmlWriter.writeEndElement();
+            xmlWriter.flush();
+        } catch (XMLStreamException e) {
+            Throwables.propagate(e);
+        }
     }
 }