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/*-
* ============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(); //
private JsonSerializer() {}
/**
* 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 fieldAttributes) {
return !inclusions.contains(fieldAttributes.getName());
}
@Override
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
}
}
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