1 files changed, 69 insertions, 0 deletions
diff --git a/datafile-app-server/src/main/java/org/onap/dcaegen2/collectors/datafile/model/JsonSerializer.java b/datafile-app-server/src/main/java/org/onap/dcaegen2/collectors/datafile/model/JsonSerializer.java
new file mode 100644
index 00000000..7081d1ac
--- /dev/null
+++ b/datafile-app-server/src/main/java/org/onap/dcaegen2/collectors/datafile/model/JsonSerializer.java
@@ -0,0 +1,69 @@
+/*-
+ * ============LICENSE_START======================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property, 2018-2019 Nordix Foundation. All rights reserved.
+ * ===============================================================================================
+ * 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.
+ * ============LICENSE_END========================================================================
+ */
+
+package org.onap.dcaegen2.collectors.datafile.model;
+
+import com.google.common.collect.Sets;
+import com.google.gson.ExclusionStrategy;
+import com.google.gson.FieldAttributes;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+import java.util.Set;
+
+/**
+ * Helper class to serialize object.
+ */
+public abstract class JsonSerializer {
+
+
+    private static Gson gson =
+        new GsonBuilder() //
+        .serializeNulls() //
+        .addSerializationExclusionStrategy(new FilePublishInformationExclusionStrategy()) //
+        .create(); //
+
+    /**
+     * Serializes a <code>filePublishInformation</code>.
+     *
+     * @param filePublishInformation info to serialize.
+     *
+     * @return a string with the serialized info.
+     */
+    public static String createJsonBodyForDataRouter(FilePublishInformation filePublishInformation) {
+        return gson.toJson(filePublishInformation);
+    }
+
+    private static class FilePublishInformationExclusionStrategy implements ExclusionStrategy {
+        /**
+         * Elements in FilePublishInformation to include in the file publishing Json string.
+         */
+        private final Set<String> inclusions =
+                Sets.newHashSet("productName", "vendorName", "lastEpochMicrosec", "sourceName", "startEpochMicrosec",
+                        "timeZoneOffset", "location", "compression", "fileFormatType", "fileFormatVersion");
+        @Override
+        public boolean shouldSkipField(FieldAttributes f) {
+            return !inclusions.contains(f.getName());
+        }
+
+        @Override
+        public boolean shouldSkipClass(Class<?> clazz) {
+            return false;
+        }
+    }
+}