/*
 * Copyright (c) 2008-2012 EMC Corporation
 * All Rights Reserved
 */
package com.emc.storageos.volumecontroller.impl.plugins.metering.vnxfile;

import java.lang.reflect.InvocationTargetException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.emc.storageos.plugins.BaseCollectionException;
import com.emc.storageos.plugins.common.Executor;
import com.emc.storageos.plugins.common.domainmodel.Operation;
import com.emc.storageos.plugins.metering.vnxfile.VNXFilePluginException;

/**
 * This class is responsible for generating the command objects from the
 * operations and also execute them sequentially.
 */
public class VNXFileExecutor extends Executor {
    /**
     * Logger instance.
     */
    private final Logger _logger = LoggerFactory.getLogger(VNXFileExecutor.class);

    @Override
    protected void customizeException(Exception e, Operation operation)
            throws BaseCollectionException {
        Throwable vnxFileEx = e.getCause();
        throwException(vnxFileEx, e);
    }

    /**
     * Helper method to resolve complexity of catch blocks for execute operation
     * method.
     * 
     * @param vnxEx
     *            Throwable instance containing cause for exception.
     * @param e
     *            Exception instance.
     * @throws SMIPluginException
     *             ex.
     */
    private void throwException(final Throwable vnxEx, final Exception e)
            throws VNXFilePluginException {
        if (e instanceof IllegalArgumentException) {
            throw new VNXFilePluginException(
                    VNXFilePluginException.ERRORCODE_ILLEGALARGUMENTEXCEPTION, e,
                    vnxEx != null ? vnxEx.toString() : "Wrong number of Arguments.");
        }
        if (e instanceof IllegalAccessException) {
            throw new VNXFilePluginException(
                    VNXFilePluginException.ERRORCODE_ILLEGALACCESSEXCEPTION, e,
                    vnxEx != null ? vnxEx.toString()
                            : "Access Denied for Class or Method");
        }
        if (e instanceof InvocationTargetException) {
            throw new VNXFilePluginException(
                    VNXFilePluginException.ERRORCODE_INVOCATIONTARGETEXCEPTION, e,
                    vnxEx != null ? vnxEx.toString() : "Internal Error");
        }
    }
}