music-cyclon/app/src/main/java/max/music_cyclon/service/DownloadTask.java

93 lines
2.7 KiB
Java

package max.music_cyclon.service;
import android.os.Environment;
import android.util.Log;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.util.Locale;
import java.util.concurrent.CountDownLatch;
import java.util.zip.Adler32;
import cz.msebera.android.httpclient.client.methods.CloseableHttpResponse;
import cz.msebera.android.httpclient.client.methods.HttpGet;
import cz.msebera.android.httpclient.impl.client.CloseableHttpClient;
import cz.msebera.android.httpclient.impl.client.HttpClients;
import max.music_cyclon.service.db.FileTracker;
public class DownloadTask implements Runnable {
private final URI uri;
private final String itemPath;
private final FileTracker tracker;
private final ProgressUpdater progressUpdater;
private CountDownLatch itemsLeftLatch;
private static final CloseableHttpClient httpclient = HttpClients.createDefault();
public DownloadTask(URI uri, String itemPath,
FileTracker tracker, ProgressUpdater progressUpdater,
CountDownLatch itemsLeftLatch) {
this.uri = uri;
this.itemPath = itemPath;
this.tracker = tracker;
this.progressUpdater = progressUpdater;
this.itemsLeftLatch = itemsLeftLatch;
}
private InputStream prepareConnection() throws IOException {
HttpGet httpGet = new HttpGet(uri);
CloseableHttpResponse response = httpclient.execute(httpGet);
if (response.getStatusLine().getStatusCode() != 200) {
Log.e("ERROR", "Server returned HTTP " + response.getStatusLine().getStatusCode());
return null;
}
return response.getEntity().getContent();
}
@Override
public void run() {
File root = new File(Environment.getExternalStorageDirectory(), "library");
try {
File target = new File(root, itemPath);
Adler32 checksum = new Adler32();
InputStream input = prepareConnection();
if (input != null) {
FileOutputStream output = FileUtils.openOutputStream(target);
byte[] buffer = new byte[4 * 1024];
int n;
while (-1 != (n = input.read(buffer))) {
output.write(buffer, 0, n);
checksum.update(buffer, 0, n);
}
output.flush();
output.close();
input.close();
}
tracker.track(target, checksum.getValue());
} catch (IOException e) {
Log.wtf("WTF", e);
}
progressUpdater.increment();
itemsLeftLatch.countDown();
}
}