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/*
* ============LICENSE_START=======================================================
* ONAP : DCAE
* ================================================================================
* Copyright 2018 TechMahindra
*=================================================================================
* 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.universalvesadapter.utils;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Locale;
import javax.xml.transform.stream.StreamSource;
import org.milyn.Smooks;
import org.milyn.container.ExecutionContext;
import org.milyn.payload.StringResult;
import org.onap.dcaegen2.ves.domain.VesEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Utility methods for smooks module
*
* @author kmalbari
*
*/
public class SmooksUtils {
private final static Logger LOGGER = LoggerFactory.getLogger(SmooksUtils.class);
/**
* converts the incoming json using passed smooks instance and return the pojo representation of VES event
*
* @param smooks smooks object for the event type
* @param incomingJsonString
* @return VES json's pojo representation
* @throws IOException
*/
public static VesEvent getTransformedObjectForInput(Smooks smooks, String incomingJsonString) {
LOGGER.debug("Transforming json " + incomingJsonString);
ExecutionContext executionContext = smooks.createExecutionContext();
LOGGER.debug("Context created");
Locale defaultLocale = Locale.getDefault();
Locale.setDefault(new Locale("en", "IE"));
StringResult result = new StringResult();
// Configure the execution context to generate a report...
// executionContext.setEventListener(new HtmlReportGenerator("target/report/report.html"));
// Filter the input message to the outputWriter, using the execution context...
smooks.filterSource(executionContext, new StreamSource(new ByteArrayInputStream(incomingJsonString.getBytes(StandardCharsets.UTF_8))), result);
LOGGER.debug("Transformed incoming json now");
Locale.setDefault(defaultLocale);
VesEvent vesEvent = (VesEvent) executionContext.getBeanContext().getBean("vesEvent");
LOGGER.debug("Converted vesEvent from incoming json");
return vesEvent;
}
}
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