/*
 * Copyright (c) 2015 EMC Corporation
 * All Rights Reserved
 */
package com.emc.storageos.systemservices.impl.logsvc.marshaller;

import java.io.OutputStream;

import javax.ws.rs.core.MediaType;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.emc.storageos.svcs.errorhandling.resources.APIException;

public class MarshallerFactory {
    private static final Logger _log = LoggerFactory
            .getLogger(MarshallerFactory.class);

    private MarshallerFactory() {
        throw new AssertionError();
    }

    public static Marshaller getLogMarshaller(MediaType type, OutputStream outputStream) {
        if (MediaType.APPLICATION_JSON_TYPE.equals(type)) {
            try {
                return new JSONMarshaller(outputStream);
            } catch (Exception e) {
                _log.warn(
                        "Cannot create writer instance for JSON media type. So changing to XML. {}",
                        e);
                type = MediaType.APPLICATION_XML_TYPE;
            }
        }
        if (MediaType.APPLICATION_XML_TYPE.equals(type)) {
            return new XMLMarshaller(outputStream);
        } else if (MediaType.TEXT_PLAIN_TYPE.equals(type)) {
            return new TextMarshaller(outputStream);
        } else {
            throw APIException.badRequests
                    .theMediaTypeHasNoMarshallerDefined(type.toString());
        }
    }

}