Download chapter images
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inorichi
@@ -6,7 +6,9 @@ import javax.inject.Singleton;
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import dagger.Module;
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import dagger.Provides;
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import eu.kanade.mangafeed.data.caches.CacheManager;
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import eu.kanade.mangafeed.data.helpers.DatabaseHelper;
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import eu.kanade.mangafeed.data.helpers.NetworkHelper;
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import eu.kanade.mangafeed.data.helpers.PreferencesHelper;
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import rx.Scheduler;
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import rx.schedulers.Schedulers;
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@@ -35,4 +37,16 @@ public class DataModule {
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return Schedulers.io();
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}
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@Provides
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@Singleton
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CacheManager provideCacheManager(Application app) {
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return new CacheManager(app);
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}
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@Provides
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@Singleton
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NetworkHelper provideNetworkHelper() {
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return new NetworkHelper();
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}
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}
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@@ -0,0 +1,223 @@
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package eu.kanade.mangafeed.data.caches;
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import android.content.Context;
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import com.bumptech.glide.Glide;
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import com.bumptech.glide.request.FutureTarget;
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import com.bumptech.glide.request.target.Target;
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import com.jakewharton.disklrucache.DiskLruCache;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.List;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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import eu.kanade.mangafeed.util.DiskUtils;
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import rx.Observable;
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import rx.Subscriber;
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import rx.functions.Action0;
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public class CacheManager {
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private static final String PARAMETER_CACHE_DIRECTORY = "chapter_disk_cache";
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private static final int PARAMETER_APP_VERSION = 1;
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private static final int PARAMETER_VALUE_COUNT = 1;
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private static final long PARAMETER_CACHE_SIZE = 10 * 1024 * 1024;
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private static final int READ_TIMEOUT = 60;
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private Context mContext;
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private DiskLruCache mDiskCache;
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public CacheManager(Context context) {
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mContext = context;
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try {
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mDiskCache = DiskLruCache.open(
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new File(context.getCacheDir(), PARAMETER_CACHE_DIRECTORY),
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PARAMETER_APP_VERSION,
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PARAMETER_VALUE_COUNT,
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PARAMETER_CACHE_SIZE
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);
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} catch (IOException e) {
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// Do Nothing.
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}
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}
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public Observable<File> cacheImagesFromUrls(final List<String> imageUrls) {
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return Observable.create(new Observable.OnSubscribe<File>() {
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@Override
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public void call(Subscriber<? super File> subscriber) {
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try {
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for (String imageUrl : imageUrls) {
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if (!subscriber.isUnsubscribed()) {
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subscriber.onNext(cacheImageFromUrl(imageUrl));
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}
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}
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subscriber.onCompleted();
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} catch (Throwable e) {
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subscriber.onError(e);
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}
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}
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});
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}
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private File cacheImageFromUrl(String imageUrl) throws InterruptedException, ExecutionException, TimeoutException {
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FutureTarget<File> cacheFutureTarget = Glide.with(mContext)
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.load(imageUrl)
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.downloadOnly(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL);
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return cacheFutureTarget.get(READ_TIMEOUT, TimeUnit.SECONDS);
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}
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public Observable<Boolean> clearImageCache() {
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return Observable.create(new Observable.OnSubscribe<Boolean>() {
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@Override
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public void call(Subscriber<? super Boolean> subscriber) {
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try {
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subscriber.onNext(clearImageCacheImpl());
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subscriber.onCompleted();
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} catch (Throwable e) {
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subscriber.onError(e);
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}
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}
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});
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}
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private boolean clearImageCacheImpl() {
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boolean isSuccessful = true;
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File imageCacheDirectory = Glide.getPhotoCacheDir(mContext);
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if (imageCacheDirectory.isDirectory()) {
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for (File cachedFile : imageCacheDirectory.listFiles()) {
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if (!cachedFile.delete()) {
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isSuccessful = false;
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}
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}
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} else {
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isSuccessful = false;
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}
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File urlCacheDirectory = getCacheDir();
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if (urlCacheDirectory.isDirectory()) {
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for (File cachedFile : urlCacheDirectory.listFiles()) {
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if (!cachedFile.delete()) {
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isSuccessful = false;
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}
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}
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} else {
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isSuccessful = false;
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}
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return isSuccessful;
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}
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public Observable<String> getImageUrlsFromDiskCache(final String chapterUrl) {
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return Observable.create(new Observable.OnSubscribe<String>() {
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@Override
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public void call(Subscriber<? super String> subscriber) {
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try {
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String[] imageUrls = getImageUrlsFromDiskCacheImpl(chapterUrl);
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for (String imageUrl : imageUrls) {
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if (!subscriber.isUnsubscribed()) {
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subscriber.onNext(imageUrl);
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}
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}
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subscriber.onCompleted();
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} catch (Throwable e) {
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subscriber.onError(e);
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}
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}
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});
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}
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private String[] getImageUrlsFromDiskCacheImpl(String chapterUrl) throws IOException {
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DiskLruCache.Snapshot snapshot = null;
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try {
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String key = DiskUtils.hashKeyForDisk(chapterUrl);
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snapshot = mDiskCache.get(key);
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String joinedImageUrls = snapshot.getString(0);
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return joinedImageUrls.split(",");
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} finally {
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if (snapshot != null) {
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snapshot.close();
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}
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}
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}
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public Action0 putImageUrlsToDiskCache(final String chapterUrl, final List<String> imageUrls) {
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return new Action0() {
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@Override
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public void call() {
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try {
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putImageUrlsToDiskCacheImpl(chapterUrl, imageUrls);
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} catch (IOException e) {
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// Do Nothing.
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}
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}
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};
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}
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private void putImageUrlsToDiskCacheImpl(String chapterUrl, List<String> imageUrls) throws IOException {
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String cachedValue = joinImageUrlsToCacheValue(imageUrls);
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DiskLruCache.Editor editor = null;
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OutputStream outputStream = null;
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try {
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String key = DiskUtils.hashKeyForDisk(chapterUrl);
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editor = mDiskCache.edit(key);
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if (editor == null) {
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return;
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}
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outputStream = new BufferedOutputStream(editor.newOutputStream(0));
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outputStream.write(cachedValue.getBytes());
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outputStream.flush();
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mDiskCache.flush();
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editor.commit();
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} finally {
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if (editor != null) {
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try {
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editor.abort();
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} catch (IOException ignore) {
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// Do Nothing.
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}
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}
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if (outputStream != null) {
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try {
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outputStream.close();
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} catch (IOException ignore) {
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// Do Nothing.
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}
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}
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}
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}
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private String joinImageUrlsToCacheValue(List<String> imageUrls) {
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StringBuilder stringBuilder = new StringBuilder();
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for (int index = 0; index < imageUrls.size(); index++) {
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if (index == 0) {
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stringBuilder.append(imageUrls.get(index));
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} else {
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stringBuilder.append(",");
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stringBuilder.append(imageUrls.get(index));
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}
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}
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return stringBuilder.toString();
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}
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public File getCacheDir() {
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return mDiskCache.getDirectory();
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}
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}
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@@ -0,0 +1,62 @@
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package eu.kanade.mangafeed.data.helpers;
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import com.squareup.okhttp.CacheControl;
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import com.squareup.okhttp.Headers;
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import com.squareup.okhttp.OkHttpClient;
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import com.squareup.okhttp.Request;
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import com.squareup.okhttp.Response;
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import java.io.IOException;
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import rx.Observable;
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import rx.Subscriber;
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import timber.log.Timber;
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public final class NetworkHelper {
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private OkHttpClient mClient;
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public final CacheControl NULL_CACHE_CONTROL = new CacheControl.Builder().noCache().build();
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public final Headers NULL_HEADERS = new Headers.Builder().build();
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public NetworkHelper() {
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mClient = new OkHttpClient();
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}
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public Observable<Response> getResponse(final String url, final CacheControl cacheControl, final Headers headers) {
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return Observable.create(subscriber -> {
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try {
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if (!subscriber.isUnsubscribed()) {
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Request request = new Request.Builder()
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.url(url)
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.cacheControl(cacheControl != null ? cacheControl : NULL_CACHE_CONTROL)
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.headers(headers != null ? headers : NULL_HEADERS)
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.build();
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subscriber.onNext(mClient.newCall(request).execute());
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}
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subscriber.onCompleted();
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} catch (Throwable e) {
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subscriber.onError(e);
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}
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});
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}
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public Observable<String> mapResponseToString(final Response response) {
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return Observable.create(subscriber -> {
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try {
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subscriber.onNext(response.body().string());
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subscriber.onCompleted();
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} catch (Throwable e) {
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subscriber.onError(e);
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}
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});
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}
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public Observable<String> getStringResponse(final String url, final CacheControl cacheControl, final Headers headers) {
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return getResponse(url, cacheControl, headers)
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.flatMap(this::mapResponseToString);
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}
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}
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