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/*-
* ============LICENSE_START=======================================================
* org.openecomp.aai
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.openecomp.aai.serialization.queryformats;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import org.openecomp.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
import java.util.List;
import java.util.Optional;
import java.util.stream.Stream;
public class Formatter {
private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(Formatter.class);
protected JsonParser parser = new JsonParser();
protected final FormatMapper format;
public Formatter(FormatMapper format) {
this.format = format;
}
public JsonObject output(List<Object> vertices) {
Stream<Object> stream = null;
JsonObject result = new JsonObject();
JsonArray body = new JsonArray();
if (vertices.size() >= format.parallelThreshold()) {
stream = vertices.parallelStream();
} else {
stream = vertices.stream();
}
stream.map(v -> {
try {
return Optional.<JsonObject>of(format.formatObject(v));
} catch (AAIFormatVertexException e) {
LOGGER.warn("Failed to format vertex, returning a partial list", e);
}
return Optional.<JsonObject>empty();
}).forEach(obj -> {
if (obj.isPresent()) {
synchronized (body) {
body.add(obj.get());
}
}
});
result.add("results", body);
return result.getAsJsonObject();
}
}
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