components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/applications/payload/PayloadFactory.java

/**
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.apache.stratos.autoscaler.applications.payload;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.stratos.autoscaler.exception.ApplicationDefinitionException;


public class PayloadFactory {

	private static Log log = LogFactory.getLog(PayloadFactory.class);

    /**
     * Creates and returns a PayloadData instance
     *
     * @param cartridgeProvider Cartridge provider
     * @param cartridgeType Cartridge type
     * @param basicPayloadData BasicPayloadData instance
     * @return Payload subscription
     */
	public static PayloadData getPayloadDataInstance(String cartridgeProvider, String cartridgeType,
                                                     BasicPayloadData basicPayloadData)
            throws ApplicationDefinitionException {

        PayloadData payloadData = null;

        //TODO: fix after adding the property Category to Cartridge Definition
        if (cartridgeProvider.equals("data")) {
            payloadData = new DataCartridgePayloadData(basicPayloadData);
        } else {
            payloadData = new FrameworkCartridgePayloadData(basicPayloadData);
        }

        if(payloadData == null) {
            throw new ApplicationDefinitionException("Unable to find matching payload for cartridge type " + cartridgeType +
                    ", provider " + cartridgeProvider);
        }

        return payloadData;
    }
}