org.devtoolbox.errorhandling.impl.OnErrorFileMover.java Source code

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Here is the source code for org.devtoolbox.errorhandling.impl.OnErrorFileMover.java

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/*
 * Copyright 2011 Janis Kazakovs <janis.kazakovs@opatopa.com>.
 * 
 * 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.devtoolbox.errorhandling.impl;

import java.io.File;
import java.io.IOException;

import org.apache.camel.Exchange;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.devtoolbox.errorhandling.FileMover;
import org.devtoolbox.errorhandling.exception.FileMoverException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

/**
 * @author Janis Kazakovs <janis.kazakovs@opatopa.com>
 *
 */
@Component("onErrorFileMover")
public class OnErrorFileMover implements FileMover {

    //--- PUBLIC ---// 

    /**
     * {@inheritDoc}
     *
     * @see org.devtoolbox.errorhandling.FileMover#move(org.apache.camel.Exchange)
     */
    public void move(Exchange anExchange) throws FileMoverException {

        final String fileSeparator = System.getProperty("file.separator");

        String fileName = retrieveOriginalFileName(anExchange);
        String rootFolderPath = retrieveRootFolderPath(anExchange, fileName);
        String processingFolderPath = retrieveProcessingFolderPath(anExchange, fileName);
        String errorFolderPath = retrieveErrorFolderPath(anExchange, fileName);
        String processingPath = rootFolderPath + fileSeparator + processingFolderPath + fileSeparator + fileName;
        File processingFile = new File(processingPath);
        if (processingFile.exists()) {

            String errorPath = rootFolderPath + fileSeparator + errorFolderPath;
            File errorDirectory = new File(errorPath);
            boolean createDirectory = (!errorDirectory.exists());
            try {

                FileUtils.moveFileToDirectory(processingFile, errorDirectory, createDirectory);
            } catch (IOException e) {

                final String errorMsg = ""; //TODO add error message
                throw new FileMoverException(errorMsg);
            }
        }
    }

    //--- PRIVATE ---//

    private String retrieveErrorFolderPath(Exchange anExchange, String aFileName) {
        String result = null;

        result = anExchange.getProperty("errorFolderPath", String.class);
        if (StringUtils.isEmpty(result)) {

            final String errorMsg = "Error handling route is not able to move \"" + aFileName
                    + "\" file from a processing to an error folder, because the error folder path is not known.";
            logger.error(errorMsg);
            throw new FileMoverException(errorMsg);
        }

        return result;
    }

    private String retrieveProcessingFolderPath(Exchange anExchange, String aFileName) {
        String result = null;

        result = anExchange.getProperty("processingFolderPath", String.class);
        if (StringUtils.isEmpty(result)) {

            final String errorMsg = "Error handling route is not able to move \"" + aFileName
                    + "\" file from a processing to an error folder, because the processing folder path is not known.";
            logger.error(errorMsg);
            throw new FileMoverException(errorMsg);
        }

        return result;
    }

    private String retrieveRootFolderPath(Exchange anExchange, String aFileName) {
        String result = null;

        result = anExchange.getProperty("rootFolderPath", String.class);
        if (StringUtils.isEmpty(result)) {

            final String errorMsg = "Error handling route is not able to move \"" + aFileName
                    + "\" file from a processing to an error folder, because the root folder path is not known.";
            logger.error(errorMsg);
            throw new FileMoverException(errorMsg);
        }

        return result;
    }

    private String retrieveOriginalFileName(Exchange anExchange) {
        String result = null;

        result = anExchange.getProperty("originalFileName", String.class);
        if (StringUtils.isEmpty(result)) {

            final String errorMsg = "Error handling route is not able to move a file from a processing to an error folder, because the name of a file to move is not known.";
            logger.error(errorMsg);
            throw new FileMoverException(errorMsg);
        }

        return result;
    }

    private static final Logger logger = LoggerFactory.getLogger(OnErrorFileMover.class);
}