Fix filter config as an object

* Add use exisiting to DR feed
* Add resource configuration
* Add support for filter config as escaped JSON string

Issue-ID: DCAEGEN2-1826
Change-Id: Ie4fe45e0443af8eb4d859e66609aa6cbffd0e920
Signed-off-by: JoeOLeary <joseph.o.leary@est.tech>

2 files changed, 59 insertions, 0 deletions

diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/model/MapperConfig.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/model/MapperConfig.java
index 385a256..ac315ac 100644
--- a/src/main/java/org/onap/dcaegen2/services/pmmapper/model/MapperConfig.java
+++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/model/MapperConfig.java
@@ -29,6 +29,7 @@ import lombok.ToString;
 import org.onap.dcaegen2.services.pmmapper.config.Configurable;
 import org.onap.dcaegen2.services.pmmapper.utils.DMaaPAdapter;
 import org.onap.dcaegen2.services.pmmapper.utils.GSONRequired;
+import org.onap.dcaegen2.services.pmmapper.utils.MeasFilterConfigAdapter;
 
 @Getter
 @EqualsAndHashCode
@@ -64,6 +65,7 @@ public class MapperConfig implements Configurable {
 
     @GSONRequired
     @SerializedName("pm-mapper-filter")
+    @JsonAdapter(MeasFilterConfigAdapter.class)
     private MeasFilterConfig filterConfig;
 
     @GSONRequired
diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/utils/MeasFilterConfigAdapter.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/utils/MeasFilterConfigAdapter.java
new file mode 100644
index 0000000..1826707
--- /dev/null
+++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/utils/MeasFilterConfigAdapter.java
@@ -0,0 +1,57 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Nordix 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.dcaegen2.services.pmmapper.utils;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import org.onap.dcaegen2.services.pmmapper.model.MeasFilterConfig;
+import org.onap.logging.ref.slf4j.ONAPLogAdapter;
+import org.slf4j.LoggerFactory;
+
+public class MeasFilterConfigAdapter extends TypeAdapter<MeasFilterConfig> {
+    private static final ONAPLogAdapter logger = new ONAPLogAdapter(
+            LoggerFactory.getLogger(MeasFilterConfigAdapter.class));
+
+    @Override
+    public void write(JsonWriter jsonWriter, MeasFilterConfig o) throws IOException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public MeasFilterConfig read(JsonReader jsonReader) throws IOException {
+        JsonElement rootElement = new JsonParser().parse(jsonReader);
+        if (rootElement.isJsonObject()) {
+            logger.unwrap().debug("Reading filter as an object.");
+            return new Gson().fromJson(rootElement, MeasFilterConfig.class);
+        } else if (rootElement.isJsonPrimitive()) {
+            logger.unwrap().debug("Reading filter as an object in a JSON string.");
+            return new Gson().fromJson(rootElement.getAsString(), MeasFilterConfig.class);
+        } else {
+            logger.unwrap().error("Filter does not appear to be formatted correctly.");
+            throw new UnsupportedOperationException("Expected an Object or Object as JSON String.");
+        }
+    }
+}