Merge "Changed NetconfDeviceDatastoreAdapter and NetconfDeviceTopologyAdapter to...

[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 cebd3268ce49542342283e20784fa3b9c4dd9855..edf42b681fa2a458e2429145febb8fe649c4aaaa 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
@@ -8,26 +8,37 @@
 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;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Type;
+import java.net.URI;
 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 org.opendaylight.controller.sal.rest.api.Draft02;
 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;
+import org.opendaylight.yangtools.yang.model.api.SchemaPath;
 
 @Provider
 @Produces({ Draft02.MediaTypes.API + RestconfService.JSON, Draft02.MediaTypes.DATA + RestconfService.JSON,
@@ -48,16 +59,69 @@ public class NormalizedNodeJsonBodyWriter implements MessageBodyWriter<Normalize
     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 {
-        if (t.getData() == null) {
-            throw new RestconfDocumentedException(Response.Status.NOT_FOUND);
+        NormalizedNode<?, ?> data = t.getData();
+        if (data == null) {
+            return;
         }
 
-        InstanceIdentifierContext pathContext = t.getInstanceIdentifierContext();
-        OutputStreamWriter ouWriter = new OutputStreamWriter(entityStream, Charsets.UTF_8);
-        NormalizedNodeStreamWriter jsonWriter = JSONNormalizedNodeStreamWriter.create(pathContext.getSchemaContext(),ouWriter);
-        NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(jsonWriter);
+        final InstanceIdentifierContext<DataSchemaNode> context = (InstanceIdentifierContext<DataSchemaNode>) t.getInstanceIdentifierContext();
+
+        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.
+        }
+
+        final JsonWriter jsonWriter = createJsonWriter(entityStream);
+        final 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.write(t.getData());
         nnWriter.flush();
+        jsonWriter.endObject();
+        jsonWriter.flush();
+    }
+
+    private NormalizedNodeWriter createNormalizedNodeWriter(final InstanceIdentifierContext<DataSchemaNode> context,
+            final SchemaPath path, final 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();
+        }
+        final NormalizedNodeStreamWriter streamWriter = JSONNormalizedNodeStreamWriter.createNestedWriter(codecs,path,initialNs,jsonWriter);
+        return NormalizedNodeWriter.forStreamWriter(streamWriter);
     }
+
+    private JsonWriter createJsonWriter(final OutputStream entityStream) {
+        // FIXME BUG-2153: Add pretty print support
+        return JsonWriterFactory.createJsonWriter(new OutputStreamWriter(entityStream, Charsets.UTF_8));
+
+    }
+
+    private JSONCodecFactory getCodecFactory(final 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(final DataContainerChild<? extends PathArgument, ?> child : data.getValue()) {
+            nnWriter.write(child);
+        }
+    }
+
 }