Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/apps/dpistats/api/src/main/java/org/onosproject/incubator/net/dpi/DpiStatInfoCodec.java b/apps/dpistats/api/src/main/java/org/onosproject/incubator/net/dpi/DpiStatInfoCodec.java
new file mode 100644
index 0000000..34e246a
--- /dev/null
+++ b/apps/dpistats/api/src/main/java/org/onosproject/incubator/net/dpi/DpiStatInfoCodec.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.dpi;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.slf4j.Logger;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.IntStream;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Implementation of encoder for DpiStatInfo codec.
+ */
+public final class DpiStatInfoCodec extends JsonCodec<DpiStatInfo> {
+
+    private static final String TRAFFIC_STATISTICS = "trafficStatistics";
+    private static final String DETECTED_PROTOS = "detectedProtos";
+    private static final String KNOWN_FLOWS = "knownFlows";
+    private static final String UNKNOWN_FLOWS = "unknownFlows";
+
+    private final Logger log = getLogger(getClass());
+
+    @Override
+    public ObjectNode encode(DpiStatInfo dsi, CodecContext context) {
+        checkNotNull(dsi, "DpiStatInfo cannot be null");
+
+        final ObjectNode result = context.mapper().createObjectNode();
+
+        final JsonCodec<TrafficStatInfo> trafficStatInfoCodec =
+                context.codec(TrafficStatInfo.class);
+
+
+        final TrafficStatInfo tsi = dsi.trafficStatistics();
+        if (tsi != null) {
+            final ObjectNode jsonTrafficStatistics = trafficStatInfoCodec.encode(tsi, context);
+            result.set(TRAFFIC_STATISTICS, jsonTrafficStatistics);
+        }
+
+
+        final List<ProtocolStatInfo> psi = dsi.detectedProtos();
+        if (psi != null) {
+            final ArrayNode jsonDetectedProtos = result.putArray(DETECTED_PROTOS);
+            final JsonCodec<ProtocolStatInfo> protocolStatInfoCodec =
+                    context.codec(ProtocolStatInfo.class);
+
+            for (final ProtocolStatInfo protocolStatInfo : psi) {
+                jsonDetectedProtos.add(protocolStatInfoCodec.encode(protocolStatInfo, context));
+            }
+        }
+
+        List<FlowStatInfo> fsi = dsi.knownFlows();
+        if (fsi != null) {
+            final ArrayNode jsonKnownFlows = result.putArray(KNOWN_FLOWS);
+            final JsonCodec<FlowStatInfo> flowStatInfoCodec =
+                    context.codec(FlowStatInfo.class);
+
+            for (final FlowStatInfo flowStatInfo : fsi) {
+                jsonKnownFlows.add(flowStatInfoCodec.encode(flowStatInfo, context));
+            }
+        }
+
+        fsi = dsi.unknownFlows();
+        if (fsi != null) {
+            final ArrayNode jsonUnknownFlows = result.putArray(UNKNOWN_FLOWS);
+            final JsonCodec<FlowStatInfo> flowStatInfoCodec =
+                    context.codec(FlowStatInfo.class);
+
+            for (final FlowStatInfo flowStatInfo : fsi) {
+                jsonUnknownFlows.add(flowStatInfoCodec.encode(flowStatInfo, context));
+            }
+        }
+
+        return result;
+    }
+
+    @Override
+    public DpiStatInfo decode(ObjectNode json, CodecContext context) {
+        if (json == null || !json.isObject()) {
+            return null;
+        }
+
+        log.debug("trafficStatistics={}, full json={} ", json.get("trafficStatistics"), json);
+        TrafficStatInfo trafficStatInfo = null;
+        ObjectNode tsJson = get(json, TRAFFIC_STATISTICS);
+        if (tsJson != null) {
+            JsonCodec<TrafficStatInfo> trafficStatInfoJsonCodec =
+                    context.codec(TrafficStatInfo.class);
+            trafficStatInfo = trafficStatInfoJsonCodec.decode(tsJson, context);
+        }
+
+        final JsonCodec<ProtocolStatInfo> protocolStatInfoCodec =
+                context.codec(ProtocolStatInfo.class);
+
+        List<ProtocolStatInfo> detectedProtos = new ArrayList<>();
+        JsonNode dpJson = json.get(DETECTED_PROTOS);
+        if (dpJson != null) {
+            IntStream.range(0, dpJson.size())
+                    .forEach(i -> detectedProtos.add(
+                            protocolStatInfoCodec.decode(get(dpJson, i),
+                                                     context)));
+        }
+
+        final JsonCodec<FlowStatInfo> flowStatInfoCodec =
+                context.codec(FlowStatInfo.class);
+
+        List<FlowStatInfo> knownFlows = new ArrayList<>();
+        JsonNode kfJson = json.get(KNOWN_FLOWS);
+        if (kfJson != null) {
+            IntStream.range(0, kfJson.size())
+                    .forEach(i -> knownFlows.add(
+                            flowStatInfoCodec.decode(get(kfJson, i),
+                                                         context)));
+        }
+
+        List<FlowStatInfo> unknownFlows = new ArrayList<>();
+        JsonNode ufJson = json.get(UNKNOWN_FLOWS);
+        if (ufJson != null) {
+            IntStream.range(0, ufJson.size())
+                    .forEach(i -> unknownFlows.add(
+                            flowStatInfoCodec.decode(get(ufJson, i),
+                                                     context)));
+        }
+
+        return new DpiStatInfo(trafficStatInfo,
+                               detectedProtos,
+                               knownFlows,
+                               unknownFlows);
+    }
+}