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/**
 * Copyright (c) 2018 Orange
 *
 * 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.
 */
package org.onap.nbi.apis.servicecatalog.jolt;

import java.util.List;
import org.onap.nbi.exceptions.TechnicalException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import com.bazaarvoice.jolt.Chainr;
import com.bazaarvoice.jolt.JsonUtils;
import com.bazaarvoice.jolt.exception.JoltException;

@Service
public class GetServiceSpecJsonTransformer {

    private Chainr chainr;

    private static final Logger LOGGER = LoggerFactory.getLogger(GetServiceSpecJsonTransformer.class);


    public GetServiceSpecJsonTransformer() {
        List<Object> specs = JsonUtils.classpathToList("/jolt/getServiceCatalog.json");
        this.chainr = Chainr.fromSpec(specs);
    }

    public Object transform(Object serviceSpec) {
        Object output = null;
        try {
            output = chainr.transform(serviceSpec);
        } catch (JoltException joE) {
            LOGGER.error("Unable to transform SDC response with JOLT Transformer", joE);
            throw new TechnicalException("Error while parsing ONAP response");
        }
        return output;
    }

}