Move streams support classes

[netconf.git] / restconf / restconf-nb-rfc8040 / src / main / java / org / opendaylight / restconf / nb / rfc8040 / streams / listeners / JsonDataTreeCandidateSerializer.java

diff --git a/restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/JsonDataTreeCandidateSerializer.java b/restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/JsonDataTreeCandidateSerializer.java
new file mode 100644 (file)
index 0000000..3960b65
--- /dev/null
+++ b/restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/JsonDataTreeCandidateSerializer.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.restconf.nb.rfc8040.streams.listeners;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.util.Collection;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+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.JSONCodecFactorySupplier;
+import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidateNode;
+import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
+import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
+
+final class JsonDataTreeCandidateSerializer extends AbstractWebsocketSerializer<IOException> {
+    private final JSONCodecFactorySupplier codecSupplier;
+    private final JsonWriter jsonWriter;
+
+    JsonDataTreeCandidateSerializer(final EffectiveModelContext context,
+            final JSONCodecFactorySupplier codecSupplier, final JsonWriter jsonWriter) {
+        super(context);
+        this.codecSupplier = requireNonNull(codecSupplier);
+        this.jsonWriter = requireNonNull(jsonWriter);
+    }
+
+    @Override
+    void serializeData(final Inference parent, final Collection<PathArgument> dataPath,
+            final DataTreeCandidateNode candidate, final boolean skipData) throws IOException {
+        NormalizedNodeStreamWriter nestedWriter = JSONNormalizedNodeStreamWriter.createNestedWriter(
+            codecSupplier.getShared(parent.getEffectiveModelContext()), parent, null, jsonWriter);
+        jsonWriter.beginObject();
+        serializePath(dataPath);
+
+        if (!skipData && candidate.getDataAfter().isPresent()) {
+            jsonWriter.name("data").beginObject();
+            NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(nestedWriter);
+            nodeWriter.write(candidate.getDataAfter().get());
+            nodeWriter.flush();
+
+            // end data
+            jsonWriter.endObject();
+        }
+
+        serializeOperation(candidate);
+        jsonWriter.endObject();
+    }
+
+    @Override
+    void serializeOperation(final DataTreeCandidateNode candidate)
+            throws IOException {
+        jsonWriter.name("operation").value(modificationTypeToOperation(candidate, candidate.getModificationType()));
+    }
+
+    @Override
+    void serializePath(final Collection<YangInstanceIdentifier.PathArgument> pathArguments)
+            throws IOException {
+        jsonWriter.name("path").value(convertPath(pathArguments));
+    }
+}