AntennaPod/ui/glide/src/main/java/de/danoeh/antennapod/ui/glide/ApOkHttpUrlLoader.java

113 lines
4.0 KiB
Java

package de.danoeh.antennapod.ui.glide;
import android.content.ContentResolver;
import android.text.TextUtils;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.bumptech.glide.load.Options;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.load.model.ModelLoader;
import com.bumptech.glide.load.model.ModelLoaderFactory;
import com.bumptech.glide.load.model.MultiModelLoaderFactory;
import com.bumptech.glide.signature.ObjectKey;
import de.danoeh.antennapod.core.service.download.AntennapodHttpClient;
import de.danoeh.antennapod.core.util.NetworkUtils;
import de.danoeh.antennapod.model.feed.Feed;
import de.danoeh.antennapod.model.feed.FeedMedia;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.Protocol;
import okhttp3.Response;
import okhttp3.ResponseBody;
import java.io.IOException;
import java.io.InputStream;
/**
* {@see com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader}.
*/
class ApOkHttpUrlLoader implements ModelLoader<String, InputStream> {
/**
* The default factory for {@link ApOkHttpUrlLoader}s.
*/
public static class Factory implements ModelLoaderFactory<String, InputStream> {
private static volatile OkHttpClient internalClient;
private final OkHttpClient client;
private static OkHttpClient getInternalClient() {
if (internalClient == null) {
synchronized (Factory.class) {
if (internalClient == null) {
OkHttpClient.Builder builder = AntennapodHttpClient.newBuilder();
builder.interceptors().add(new NetworkAllowanceInterceptor());
builder.cache(null); // Handled by Glide
internalClient = builder.build();
}
}
}
return internalClient;
}
/**
* Constructor for a new Factory that runs requests using a static singleton client.
*/
Factory() {
this.client = getInternalClient();
}
@NonNull
@Override
public ModelLoader<String, InputStream> build(@NonNull MultiModelLoaderFactory multiFactory) {
return new ApOkHttpUrlLoader(client);
}
@Override
public void teardown() {
// Do nothing, this instance doesn't own the client.
}
}
private final OkHttpClient client;
private ApOkHttpUrlLoader(OkHttpClient client) {
this.client = client;
}
@Nullable
@Override
public LoadData<InputStream> buildLoadData(@NonNull String model, int width, int height, @NonNull Options options) {
return new LoadData<>(new ObjectKey(model), new ResizingOkHttpStreamFetcher(client, new GlideUrl(model)));
}
@Override
public boolean handles(@NonNull String model) {
return !TextUtils.isEmpty(model)
// If the other loaders fail, do not attempt to load as web resource
&& !model.startsWith(Feed.PREFIX_GENERATIVE_COVER)
&& !model.startsWith(FeedMedia.FILENAME_PREFIX_EMBEDDED_COVER)
// Leave content URIs to Glide's default loaders
&& !model.startsWith(ContentResolver.SCHEME_CONTENT)
&& !model.startsWith(ContentResolver.SCHEME_ANDROID_RESOURCE);
}
private static class NetworkAllowanceInterceptor implements Interceptor {
@NonNull
@Override
public Response intercept(@NonNull Chain chain) throws IOException {
if (NetworkUtils.isImageAllowed()) {
return chain.proceed(chain.request());
} else {
return new Response.Builder()
.protocol(Protocol.HTTP_2)
.code(420)
.message("Policy Not Fulfilled")
.body(ResponseBody.create(new byte[0], null))
.request(chain.request())
.build();
}
}
}
}