Merge "Fixed discard-changes for mdsal netconf, mapping code cleanup."

[controller.git] / opendaylight / md-sal / sal-rest-connector / src / main / java / org / opendaylight / controller / sal / rest / impl / NormalizedNodeJsonBodyWriter.java

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 af21db8bc65d459e1a7b2cba4a81681d4ead2d1e..589f9cd662bf7f9ea8d456fba38ba7925595d84e 100644 (file)
--- 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
@@ -8,6 +8,7 @@
 package org.opendaylight.controller.sal.rest.impl;
 
 import com.google.common.base.Charsets;
+import com.google.gson.stream.JsonWriter;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
@@ -26,11 +27,16 @@ 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;
 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
+import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
 import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.codec.gson.JsonWriterFactory;
 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
@@ -56,34 +62,67 @@ public class NormalizedNodeJsonBodyWriter implements MessageBodyWriter<Normalize
             final MediaType mediaType, final MultivaluedMap<String, Object> httpHeaders, final OutputStream entityStream)
                     throws IOException, WebApplicationException {
         NormalizedNode<?, ?> data = t.getData();
-        InstanceIdentifierContext context = t.getInstanceIdentifierContext();
-        DataSchemaNode schema = context.getSchemaNode();
-        SchemaPath path = context.getSchemaNode().getPath();
-        OutputStreamWriter outputWriter = new OutputStreamWriter(entityStream, Charsets.UTF_8);
         if (data == null) {
             throw new RestconfDocumentedException(Response.Status.NOT_FOUND);
         }
 
+        final InstanceIdentifierContext context = t.getInstanceIdentifierContext();
 
-        URI initialNs = null;
-        outputWriter.write('{');
-        if (!SchemaPath.ROOT.equals(path)) {
+        SchemaPath path = context.getSchemaNode().getPath();
+        boolean isDataRoot = false;
+        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();
+
+        JsonWriter jsonWriter = createJsonWriter(entityStream);
+        NormalizedNodeWriter nnWriter = createNormalizedNodeWriter(context,path,jsonWriter);
+
+        jsonWriter.beginObject();
+        if(isDataRoot) {
+            writeDataRoot(nnWriter,(ContainerNode) data);
+        } else {
+            if(data instanceof MapEntryNode) {
+                data = ImmutableNodes.mapNodeBuilder(data.getNodeType()).withChild(((MapEntryNode) data)).build();
+            }
+            nnWriter.write(data);
         }
+
+        nnWriter.flush();
+        jsonWriter.endObject();
+        jsonWriter.flush();
+    }
+
+    private NormalizedNodeWriter createNormalizedNodeWriter(InstanceIdentifierContext context, SchemaPath path, JsonWriter jsonWriter) {
+
+        final DataSchemaNode schema = context.getSchemaNode();
+        final JSONCodecFactory codecs = getCodecFactory(context);
+
+        URI initialNs = null;
         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);
-        nnWriter.flush();
+        final NormalizedNodeStreamWriter streamWriter = JSONNormalizedNodeStreamWriter.createNestedWriter(codecs,path,initialNs,jsonWriter);
+        return NormalizedNodeWriter.forStreamWriter(streamWriter);
+    }
+
+    private JsonWriter createJsonWriter(OutputStream entityStream) {
+        // FIXME BUG-2153: Add pretty print support
+        return JsonWriterFactory.createJsonWriter(new OutputStreamWriter(entityStream, Charsets.UTF_8));
 
-        outputWriter.write('}');
-        outputWriter.flush();
+    }
+
+    private JSONCodecFactory getCodecFactory(InstanceIdentifierContext context) {
+        // TODO: Performance: Cache JSON Codec factory and schema context
+        return JSONCodecFactory.create(context.getSchemaContext());
+    }
+
+    private void writeDataRoot(final NormalizedNodeWriter nnWriter, final ContainerNode data) throws IOException {
+        for(DataContainerChild<? extends PathArgument, ?> child : data.getValue()) {
+            nnWriter.write(child);
+        }
     }
 
 }