ImagesService -> StorageService

img_path -> storage_path property

1 files changed, 276 insertions, 0 deletions

diff --git a/src/main/java/com/juick/service/FileSystemStorageService.java b/src/main/java/com/juick/service/FileSystemStorageService.java
new file mode 100644
index 00000000..021e5a9f
--- /dev/null
+++ b/src/main/java/com/juick/service/FileSystemStorageService.java
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2008-2020, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.service;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.util.Iterator;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.stream.ImageInputStream;
+
+import com.juick.model.Attachment;
+import com.juick.model.Message;
+import com.juick.model.Photo;
+import com.juick.model.User;
+
+import org.apache.commons.imaging.ImageReadException;
+import org.apache.commons.imaging.Imaging;
+import org.apache.commons.imaging.common.ImageMetadata;
+import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata;
+import org.apache.commons.imaging.formats.tiff.TiffField;
+import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.FilenameUtils;
+import org.imgscalr.Scalr;
+import org.imgscalr.Scalr.Rotation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.util.StringUtils;
+
+public class FileSystemStorageService implements StorageService {
+
+    private static final Logger logger = LoggerFactory.getLogger(StorageService.class);
+
+    private final String baseDir;
+    private final String imgDir;
+    private final String tmpDir;
+    private final String avatarDir, avatarSmallDir, avatarOriginalDir;
+    private final String fullImageDir, mediumImageDir, smallImageDir, thumbnailImageDir;
+
+    public FileSystemStorageService(String baseDir, String tmpDir) {
+        this.baseDir = baseDir;
+        this.imgDir = Paths.get(baseDir, "i").toString();
+        this.tmpDir = tmpDir;
+        this.avatarDir = Paths.get(imgDir, "a").toString();
+        this.avatarOriginalDir = Paths.get(imgDir, "ao").toString();
+        this.avatarSmallDir = Paths.get(imgDir, "as").toString();
+        this.fullImageDir = Paths.get(imgDir, "p").toString();
+        this.mediumImageDir = Paths.get(imgDir, "photos-1024").toString();
+        this.smallImageDir = Paths.get(imgDir, "photos-512").toString();
+        this.thumbnailImageDir = Paths.get(imgDir, "ps").toString();
+    }
+
+    @Override
+    public void setAttachmentMetadata(String baseUrl, Message msg) throws Exception {
+        if (!StringUtils.isEmpty(msg.getAttachmentType())) {
+            Photo photo = new Photo();
+            if (msg.getRid() > 0) {
+                photo.setSmall(String.format("%sphotos-512/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(),
+                        msg.getAttachmentType()));
+                photo.setMedium(String.format("%sphotos-1024/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(),
+                        msg.getAttachmentType()));
+                photo.setThumbnail(
+                        String.format("%sps/%d-%d.%s", baseUrl, msg.getMid(), msg.getRid(), msg.getAttachmentType()));
+            } else {
+                photo.setSmall(String.format("%sphotos-512/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
+                photo.setMedium(String.format("%sphotos-1024/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
+                photo.setThumbnail(String.format("%sps/%d.%s", baseUrl, msg.getMid(), msg.getAttachmentType()));
+            }
+            msg.setPhoto(photo);
+            String imageName = String.format("%s.%s", msg.getMid(), msg.getAttachmentType());
+            if (msg.getRid() > 0) {
+                imageName = String.format("%s-%s.%s", msg.getMid(), msg.getRid(), msg.getAttachmentType());
+            }
+            File fullImage = Paths.get(fullImageDir, imageName).toFile();
+            File mediumImage = Paths.get(mediumImageDir, imageName).toFile();
+            File smallImage = Paths.get(smallImageDir, imageName).toFile();
+            File thumbnailImage = Paths.get(thumbnailImageDir, imageName).toFile();
+            StringBuilder builder = new StringBuilder();
+            builder.append(baseUrl);
+            builder.append(msg.getAttachmentType().equals("mp4") ? "video" : "p");
+            builder.append("/").append(msg.getMid());
+            if (msg.getRid() > 0) {
+                builder.append("-").append(msg.getRid());
+            }
+            builder.append(".").append(msg.getAttachmentType());
+            String originalUrl = builder.toString();
+
+            Attachment original = getAttachment(fullImage);
+            original.setUrl(originalUrl);
+
+            Attachment medium = getAttachment(mediumImage);
+            medium.setUrl(photo.getMedium());
+            original.setMedium(medium);
+
+            Attachment small = getAttachment(smallImage);
+            small.setUrl(photo.getSmall());
+            original.setSmall(small);
+
+            Attachment thumb = getAttachment(thumbnailImage);
+            thumb.setUrl(photo.getMedium());
+            original.setThumbnail(thumb);
+
+            msg.setAttachment(original);
+        }
+    }
+
+    /**
+     * Returns <code>BufferedImage</code>, same as <code>ImageIO.read()</code> does.
+     *
+     * <p>
+     * JPEG images with EXIF metadata are rotated according to Orientation tag.
+     *
+     * @param imageFile a <code>File</code> to read from.
+     */
+    private static BufferedImage readImageWithOrientation(File imageFile) throws IOException {
+
+        BufferedImage image = ImageIO.read(imageFile);
+        if (!FilenameUtils.getExtension(imageFile.getName()).equals("jpg")) {
+            return image;
+        }
+
+        try {
+            ImageMetadata metadata = Imaging.getMetadata(imageFile);
+
+            if (metadata instanceof JpegImageMetadata) {
+                JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
+                TiffField orientationField = jpegMetadata.findEXIFValue(TiffTagConstants.TIFF_TAG_ORIENTATION);
+
+                if (orientationField != null) {
+                    int orientation = orientationField.getIntValue();
+                    switch (orientation) {
+                    case TiffTagConstants.ORIENTATION_VALUE_ROTATE_90_CW:
+                        image = Scalr.rotate(image, Rotation.CW_90);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_ROTATE_180:
+                        image = Scalr.rotate(image, Rotation.CW_180);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_ROTATE_270_CW:
+                        image = Scalr.rotate(image, Rotation.CW_270);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL:
+                        image = Scalr.rotate(image, Rotation.FLIP_HORZ);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_MIRROR_VERTICAL:
+                        image = Scalr.rotate(image, Rotation.FLIP_VERT);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL_AND_ROTATE_90_CW:
+                        image = Scalr.rotate(Scalr.rotate(image, Rotation.FLIP_HORZ), Rotation.CW_90);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL_AND_ROTATE_270_CW:
+                        image = Scalr.rotate(Scalr.rotate(image, Rotation.FLIP_HORZ), Rotation.CW_270);
+                        break;
+                    case TiffTagConstants.ORIENTATION_VALUE_HORIZONTAL_NORMAL:
+                    default:
+                        // do nothing
+                        break;
+                    }
+                }
+            }
+        } catch (ImageReadException | IOException e) {
+            // failed to read metadata.
+            // nothing to do here, return image as is.
+        }
+
+        return image;
+    }
+
+    @Override
+    public void saveImageWithPreviews(String tempFilename, String outputFilename) throws IOException {
+        String ext = FilenameUtils.getExtension(outputFilename);
+
+        Path outputImagePath = Paths.get(fullImageDir, outputFilename);
+        // this throws strange exceptions
+        // Files.move(Paths.get(tmpDir, tempFilename), outputImagePath);
+        FileUtils.moveFile(Paths.get(tmpDir, tempFilename).toFile(), outputImagePath.toFile());
+        BufferedImage originalImage = readImageWithOrientation(outputImagePath.toFile());
+
+        int width = originalImage.getWidth();
+        int height = originalImage.getHeight();
+        int maxDimension = Math.max(width, height);
+        BufferedImage image1024 = (maxDimension > 1024) ? Scalr.resize(originalImage, 1024) : originalImage;
+        BufferedImage image0512 = (maxDimension > 512) ? Scalr.resize(originalImage, 512) : originalImage;
+        BufferedImage image0160 = (maxDimension > 160) ? Scalr.resize(originalImage, 160) : originalImage;
+        ImageIO.write(image1024, ext, Paths.get(mediumImageDir, outputFilename).toFile());
+        ImageIO.write(image0512, ext, Paths.get(smallImageDir, outputFilename).toFile());
+        ImageIO.write(image0160, ext, Paths.get(thumbnailImageDir, outputFilename).toFile());
+    }
+
+    private String getAvatarFileName(User user, String targetExtension) {
+        return String.format("%s.%s", user.getUid(), targetExtension);
+    }
+
+    private Path getAvatarPath(User user) {
+        return Paths.get(avatarDir, getAvatarFileName(user, "png"));
+    }
+
+    public void saveAvatar(String tempFilename, User user) throws IOException {
+        String ext = FilenameUtils.getExtension(tempFilename);
+        String originalName = getAvatarFileName(user, ext);
+        Path originalPath = Paths.get(avatarOriginalDir, originalName);
+        Files.move(Paths.get(tmpDir, tempFilename), originalPath, StandardCopyOption.REPLACE_EXISTING);
+        BufferedImage originalImage = ImageIO.read(originalPath.toFile());
+        String targetExt = "png";
+        ImageIO.write(Scalr.resize(originalImage, 96), targetExt, getAvatarPath(user).toFile());
+        ImageIO.write(Scalr.resize(originalImage, 32), targetExt, Paths.get(avatarSmallDir, getAvatarFileName(user, targetExt)).toFile());
+    }
+
+    public Attachment getAttachment(File imgFile) throws IOException {
+        Attachment attachment = new Attachment();
+        if (imgFile.exists()) {
+            try (ImageInputStream stream = ImageIO.createImageInputStream(imgFile)) {
+                Iterator<ImageReader> iter = ImageIO.getImageReaders(stream);
+                while (iter.hasNext()) {
+                    ImageReader reader = iter.next();
+                    try {
+                        reader.setInput(stream);
+                        attachment.setWidth(reader.getWidth(reader.getMinIndex()));
+                        attachment.setHeight(reader.getHeight(reader.getMinIndex()));
+                        return attachment;
+                    } catch (Exception e) {
+                        logger.debug("Error reading {}, trying next reader", imgFile.getAbsolutePath());
+                    } finally {
+                        reader.dispose();
+                    }
+                }
+            }
+        } else {
+            logger.warn("File not exists yet: {}", imgFile.getAbsolutePath());
+            return attachment;
+        }
+
+        logger.warn("Not a known image file {}", imgFile.getAbsolutePath());
+        return attachment;
+    }
+
+    public Attachment getAvatarMetadata(User user) throws IOException {
+        return getAttachment(getAvatarPath(user).toFile());
+    }
+
+    @Override
+    public String getBaseDirectory() {
+        return baseDir;
+    }
+
+    @Override
+    public String getImageDirectory() {
+        return imgDir;
+    }
+
+    @Override
+    public String getTemporaryDirectory() {
+        return tmpDir;
+    }
+}