gallery.web.controller.wallpaper.WallpaperResizeController.java Source code

Introduction

Here is the source code for gallery.web.controller.wallpaper.WallpaperResizeController.java

Source

/*
 *  Copyright 2010 demchuck.dima@gmail.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 gallery.web.controller.wallpaper;

import com.multimedia.service.wallpaper.IWallpaperService;
import common.beans.HttpResponseOutputStreamHolder;
import common.beans.IOutputStreamHolder;
import common.services.IStaticsService;
import gallery.service.resolution.IResolutionService;
import java.io.IOException;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.mvc.LastModified;

/**
 *
 * @author demchuck.dima@gmail.com
 */
//@RequestMapping("/wallpaper")
@Controller(value = "wallpaperResizeController")
public class WallpaperResizeController implements LastModified {
    protected Logger logger = Logger.getLogger(getClass());
    private IResolutionService resolutionService;
    private IWallpaperService wallpaperService;
    private IStaticsService statisticService;

    protected static final String[] RESOLUTION_WIDTH_HEIGHT = new String[] { "width", "height" };

    public void init() {
        StringBuilder sb = new StringBuilder();
        common.utils.MiscUtils.checkNotNull(resolutionService, "resolutionService", sb);
        common.utils.MiscUtils.checkNotNull(wallpaperService, "wallpaperService", sb);
        common.utils.MiscUtils.checkNotNull(statisticService, "statisticService", sb);
        if (sb.length() > 0) {
            throw new NullPointerException(sb.toString());
        }
    }

    @RequestMapping(value = "/{resolutionX}x{resolutionY}/{wallpaper:.*}", method = RequestMethod.GET)
    public void resizeWallpaper(@PathVariable("resolutionX") Integer resolutionX,
            @PathVariable("resolutionY") Integer resolutionY, @PathVariable("wallpaper") String wallpaper,
            HttpServletResponse response) {
        if (resolutionX > 0 && resolutionY > 0 && resolutionService.getRowCount(RESOLUTION_WIDTH_HEIGHT,
                new Object[] { resolutionX, resolutionY }) == 1) {
            try {
                statisticService.increaseStat(resolutionX + "x" + resolutionY + ":start_resize", 1);
                IOutputStreamHolder osh = HttpResponseOutputStreamHolder.getInstance(response);
                if (wallpaperService.getResizedWallpaperStream(wallpaper, resolutionX, resolutionY, osh)) {
                    statisticService.increaseStat(resolutionX + "x" + resolutionY + ":finish_resize", 1);
                } else {
                    //error handling
                    response.sendError(HttpServletResponse.SC_NOT_FOUND);
                }
                osh.closeAndFlushOutputStream();
            } catch (IOException ex) {
                logger.error("while resizing image and writing it to output stream(response) ");
            }
            return;
        }
        try {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
        } catch (IOException ex) {
            logger.error("while sending a not found status ");
        }
    }

    @Resource(name = "resolutionService")
    public void setResolutionService(IResolutionService value) {
        this.resolutionService = value;
    }

    @Resource(name = "wallpaperService")
    public void setWallpaperService(IWallpaperService value) {
        this.wallpaperService = value;
    }

    @Resource(name = "statsController")
    public void setStatisticService(IStaticsService value) {
        this.statisticService = value;
    }

    @Override
    public long getLastModified(HttpServletRequest request) {
        return wallpaperService.getWallpaperLastModified(request.getPathInfo());
    }

}