diff --git a/src/main/java/io/linuxserver/fleet/cache/ImageCache.java b/src/main/java/io/linuxserver/fleet/cache/ImageCache.java new file mode 100644 index 0000000..8c86ba6 --- /dev/null +++ b/src/main/java/io/linuxserver/fleet/cache/ImageCache.java @@ -0,0 +1,93 @@ +/* + * Copyright (c) 2019 LinuxServer.io + * + * 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 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +package io.linuxserver.fleet.cache; + +import io.linuxserver.fleet.model.Image; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.stream.Collectors; + +public class ImageCache { + + private static final Logger LOGGER = LoggerFactory.getLogger(ImageCache.class); + + private final Map> cachedImages; + + public ImageCache() { + this.cachedImages = new HashMap<>(); + } + + public void updateCache(Image image) { + + Image updatedImage = Image.copyOf(image); + + if (cachedImages.containsKey(updatedImage.getRepositoryId())) { + + List images = cachedImages.get(updatedImage.getRepositoryId()); + int cachedImageLocation = images.indexOf(updatedImage); + + if (cachedImageLocation > -1) { + + LOGGER.info("updateCache({}) Updating existing cached image.", updatedImage.getName()); + images.set(cachedImageLocation, updatedImage); + + } else { + + LOGGER.info("updateCache({}) Adding image to cache", updatedImage.getName()); + images.add(updatedImage); + } + + } else { + + List images = new ArrayList<>(); + images.add(updatedImage); + + LOGGER.info("updateCache({}:{}) Creating new cache for repository {}", updatedImage.getName(), updatedImage.getRepositoryId()); + cachedImages.put(updatedImage.getRepositoryId(), images); + } + } + + public List getAll(int repositoryId) { + + if (cachedImages.containsKey(repositoryId)) { + return cachedImages.get(repositoryId).stream().map(Image::copyOf).collect(Collectors.toList()); + } + + return new ArrayList<>(); + } + + public Image get(int repositoryId, String imageName) { + + List images = cachedImages.get(repositoryId); + return images.stream().filter(i -> i.getName().equals(imageName)).findFirst().orElse(null); + } + + public void remove(Image image) { + + if (cachedImages.containsKey(image.getRepositoryId())) { + + List images = cachedImages.get(image.getRepositoryId()); + images.remove(image); + } + } +} diff --git a/src/main/java/io/linuxserver/fleet/delegate/ImageDelegate.java b/src/main/java/io/linuxserver/fleet/delegate/ImageDelegate.java index c0b7b71..8bd5bb5 100644 --- a/src/main/java/io/linuxserver/fleet/delegate/ImageDelegate.java +++ b/src/main/java/io/linuxserver/fleet/delegate/ImageDelegate.java @@ -17,6 +17,7 @@ package io.linuxserver.fleet.delegate; +import io.linuxserver.fleet.cache.ImageCache; import io.linuxserver.fleet.db.dao.ImageDAO; import io.linuxserver.fleet.db.query.InsertUpdateResult; import io.linuxserver.fleet.db.query.InsertUpdateStatus; @@ -28,10 +29,13 @@ import java.util.List; public class ImageDelegate { - private final ImageDAO imageDAO; + private final ImageCache imageCache; + private final ImageDAO imageDAO; public ImageDelegate(ImageDAO imageDAO) { - this.imageDAO = imageDAO; + + this.imageDAO = imageDAO; + this.imageCache = new ImageCache(); } /** @@ -42,7 +46,21 @@ public class ImageDelegate { *

*/ public Image findImageByRepositoryAndImageName(int repositoryId, String imageName) { - return imageDAO.findImageByRepositoryAndImageName(repositoryId, imageName); + + Image cachedImage = imageCache.get(repositoryId, imageName); + + if (null == cachedImage) { + + Image image = imageDAO.findImageByRepositoryAndImageName(repositoryId, imageName); + + if (null != image) { + imageCache.updateCache(image); + } + + return image; + } + + return cachedImage; } public Image fetchImage(int id) { @@ -50,19 +68,40 @@ public class ImageDelegate { } public List fetchImagesByRepository(int repositoryId) { - return imageDAO.fetchImagesByRepository(repositoryId).getResults(); + + List cachedImages = imageCache.getAll(repositoryId); + if (cachedImages.isEmpty()) { + + List images = imageDAO.fetchImagesByRepository(repositoryId).getResults(); + images.forEach(imageCache::updateCache); + + return images; + } + + return cachedImages; } public void removeImage(Integer id) { - imageDAO.removeImage(id); + + Image existingImage = imageDAO.fetchImage(id); + if (null != existingImage) { + + imageDAO.removeImage(id); + imageCache.remove(existingImage); + } } public Image saveImage(Image image) throws SaveException { InsertUpdateResult result = imageDAO.saveImage(image); - if (result.getStatus() == InsertUpdateStatus.OK) + if (result.getStatus() == InsertUpdateStatus.OK) { + + Image updatedImage = result.getResult(); + + imageCache.updateCache(updatedImage); return result.getResult(); + } throw new SaveException(result.getStatusMessage()); } diff --git a/src/main/java/io/linuxserver/fleet/model/Image.java b/src/main/java/io/linuxserver/fleet/model/Image.java index 7727cb9..3e188be 100644 --- a/src/main/java/io/linuxserver/fleet/model/Image.java +++ b/src/main/java/io/linuxserver/fleet/model/Image.java @@ -17,6 +17,8 @@ package io.linuxserver.fleet.model; +import java.util.Objects; + /** *

* Representation of a stored image in the Fleet database. Each image contains @@ -45,6 +47,20 @@ public class Image extends PersistableItem { this.repositoryId = repositoryId; } + public static Image copyOf(Image image) { + + Image cloned = new Image(image.getId(), image.repositoryId, image.name); + cloned.version = image.version; + cloned.pullCount = image.pullCount; + cloned.versionMask = image.versionMask; + cloned.unstable = image.unstable; + cloned.hidden = image.hidden; + cloned.deprecated = image.deprecated; + cloned.deprecationReason = image.deprecationReason; + + return cloned; + } + public Image(int repositoryId, String name) { this(null, repositoryId, name); } @@ -126,4 +142,18 @@ public class Image extends PersistableItem { public String getDeprecationReason() { return deprecationReason; } + + @Override + public boolean equals(Object o) { + + if (this == o) return true; + if (o == null || getClass() != o.getClass()) return false; + Image image = (Image) o; + return repositoryId == image.repositoryId && Objects.equals(name, image.name); + } + + @Override + public int hashCode() { + return Objects.hash(repositoryId, name); + } }