/**
*
* 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.airavata.service.security;

import org.apache.airavata.common.exception.ApplicationSettingsException;
import org.apache.airavata.common.utils.ServerSettings;
import org.apache.airavata.security.AiravataSecurityException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This initializes an instance of the appropriate security manager according to the
 * configuration.
 */
public class SecurityManagerFactory {
    private static final Logger logger = LoggerFactory.getLogger(SecurityManagerFactory.class);

    public static AiravataSecurityManager getSecurityManager() throws AiravataSecurityException {
        try {
            Class<?> secManagerImpl = Class.forName(ServerSettings.getSecurityManagerClassName());
            return (AiravataSecurityManager) secManagerImpl.newInstance();
        } catch (ClassNotFoundException e) {
            String error = "Security Manager class could not be found.";
            logger.error(e.getMessage(), e);
            throw new AiravataSecurityException(error);
        } catch (ApplicationSettingsException e) {
            String error = "Error in reading the configuration related to Security Manager class.";
            logger.error(e.getMessage(), e);
            throw new AiravataSecurityException(error);
        } catch (InstantiationException | IllegalAccessException e) {
            String error = "Error in instantiating the Security Manager class.";
            logger.error(e.getMessage(), e);
            throw new AiravataSecurityException(error);
        }
    }
}
