ru.mystamps.web.service.DatabaseImagePersistenceStrategy.java Source code

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Here is the source code for ru.mystamps.web.service.DatabaseImagePersistenceStrategy.java

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/*
 * Copyright (C) 2009-2017 Slava Semushin <slava.semushin@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package ru.mystamps.web.service;

import java.io.IOException;

import javax.annotation.PostConstruct;

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

import org.springframework.web.multipart.MultipartFile;

import lombok.RequiredArgsConstructor;

import ru.mystamps.web.dao.ImageDataDao;
import ru.mystamps.web.dao.dto.AddImageDataDbDto;
import ru.mystamps.web.dao.dto.DbImageDto;
import ru.mystamps.web.dao.dto.ImageDto;
import ru.mystamps.web.dao.dto.ImageInfoDto;
import ru.mystamps.web.service.exception.ImagePersistenceException;

@RequiredArgsConstructor
public class DatabaseImagePersistenceStrategy implements ImagePersistenceStrategy {
    private static final Logger LOG = LoggerFactory.getLogger(DatabaseImagePersistenceStrategy.class);

    private final ImageDataDao imageDataDao;

    @PostConstruct
    public void init() {
        LOG.info("Images will be saved into in-memory database");
    }

    @Override
    public void save(MultipartFile file, ImageInfoDto image) {
        try {
            AddImageDataDbDto imageData = new AddImageDataDbDto();
            imageData.setImageId(image.getId());
            imageData.setContent(file.getBytes());

            Integer id = imageDataDao.add(imageData);
            LOG.info("Image's data #{} for image #{} have been saved", id, image.getId());

        } catch (IOException e) {
            // throw RuntimeException for rolling back transaction
            throw new ImagePersistenceException(e);
        }
    }

    @Override
    public ImageDto get(ImageInfoDto image) {
        DbImageDto imageDto = imageDataDao.findByImageId(image.getId());
        if (imageDto == null) {
            LOG.warn("Found image without content: #{}", image.getId());
            return null;
        }

        return imageDto;
    }

}