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

115 lines
3.6 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.util.concurrent.CountDownLatch;
import java.util.zip.Adler32;
import max.music_cyclon.SynchronizeConfig;
import max.music_cyclon.tracker.FileTracker;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class DownloadTask implements Runnable {
private final SynchronizeConfig config;
private final String url;
private final String itemPath;
private final String libraryPath;
private final String username;
private final String password;
private final FileTracker tracker;
private final ProgressUpdater progressUpdater;
private CountDownLatch itemsLeftLatch;
public static final OkHttpClient CLIENT = new OkHttpClient();
public DownloadTask(SynchronizeConfig config, String url,
String libraryPath, String itemPath,
FileTracker tracker, ProgressUpdater progressUpdater,
String username, String password
) {
this.config = config;
this.url = url;
this.itemPath = itemPath;
this.libraryPath = libraryPath;
this.username = username;
this.password = password;
this.tracker = tracker;
this.progressUpdater = progressUpdater;
}
private InputStream prepareConnection() throws IOException {
String auth = okhttp3.Credentials.basic(username != null ? username : "",
password != null ? password : "");
Request request = new Request.Builder()
.url(url)
.header("Authorization", auth)
.build();
Response response = CLIENT.newCall(request).execute();
if (response.code() != 200) {
Log.e("ERROR", "Server returned HTTP " + response.message());
return null;
}
return response.body().byteStream();
}
public void setItemsLeftLatch(CountDownLatch itemsLeftLatch) {
this.itemsLeftLatch = itemsLeftLatch;
}
@Override
public void run() {
File root = new File(Environment.getExternalStorageDirectory(),
libraryPath);
if (itemPath != null) {
try {
File target = new File(root, itemPath);
if (! target.exists()) {
Adler32 checksum = new Adler32();
InputStream input = prepareConnection();
if (input != null) {
Log.d("DOWNLOAD", "Writing file: " + target);
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(config, target, checksum.getValue());
}
} catch (IOException e) {
Log.e("DOWNLOAD", "Failed to download", e);
}
Log.i("DOWNLOAD", "Success");
} else {
Log.e("DOWNLOAD", "Missing download path, FAILED!");
}
progressUpdater.increment();
itemsLeftLatch.countDown();
}
}