/**
* Waits for completed requests. Once the first request has been taken, the method will wait
* WAIT_TIMEOUT ms longer to collect more completed requests.
*
* @return Collected feeds or null if the method has been interrupted during the first waiting
* period.
*/
private List<Feed> collectCompletedRequests() {
List<Feed> results = new LinkedList<Feed>();
DownloadRequester requester = DownloadRequester.getInstance();
int tasks = 0;
try {
DownloadRequest request = completedRequests.take();
parserService.submit(new FeedParserTask(request));
tasks++;
} catch (InterruptedException e) {
return null;
}
tasks += pollCompletedDownloads();
isCollectingRequests = true;
if (requester.isDownloadingFeeds()) {
// wait for completion of more downloads
long startTime = System.currentTimeMillis();
long currentTime = startTime;
while (requester.isDownloadingFeeds() && (currentTime - startTime) < WAIT_TIMEOUT) {
try {
if (BuildConfig.DEBUG)
Log.d(TAG, "Waiting for " + (startTime + WAIT_TIMEOUT - currentTime) + " ms");
sleep(startTime + WAIT_TIMEOUT - currentTime);
} catch (InterruptedException e) {
if (BuildConfig.DEBUG) Log.d(TAG, "interrupted while waiting for more downloads");
tasks += pollCompletedDownloads();
} finally {
currentTime = System.currentTimeMillis();
}
}
tasks += pollCompletedDownloads();
}
isCollectingRequests = false;
for (int i = 0; i < tasks; i++) {
try {
Feed f = parserService.take().get();
if (f != null) {
results.add(f);
}
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
return results;
}
@Override
public void run() {
if (request.isDeleteOnFailure()) {
if (BuildConfig.DEBUG) Log.d(TAG, "Ignoring failed download, deleteOnFailure=true");
} else {
File dest = new File(request.getDestination());
if (dest.exists() && request.getFeedfileType() == FeedMedia.FEEDFILETYPE_FEEDMEDIA) {
Log.d(TAG, "File has been partially downloaded. Writing file url");
FeedMedia media = DBReader.getFeedMedia(DownloadService.this, request.getFeedfileId());
media.setFile_url(request.getDestination());
try {
DBWriter.setFeedMedia(DownloadService.this, media).get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
}
}
@Override
public void run() {
while (isActive) {
final List<Feed> feeds = collectCompletedRequests();
if (feeds == null) {
continue;
}
if (BuildConfig.DEBUG) Log.d(TAG, "Bundling " + feeds.size() + " feeds");
for (Feed feed : feeds) {
removeDuplicateImages(
feed); // duplicate images have to removed because the DownloadRequester does not
// accept two downloads with the same download URL yet.
}
// Save information of feed in DB
if (dbUpdateFuture != null) {
try {
dbUpdateFuture.get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
dbUpdateFuture =
dbService.submit(
new Runnable() {
@Override
public void run() {
Feed[] savedFeeds =
DBTasks.updateFeed(
DownloadService.this, feeds.toArray(new Feed[feeds.size()]));
for (Feed savedFeed : savedFeeds) {
// Download Feed Image if provided and not downloaded
if (savedFeed.getImage() != null
&& savedFeed.getImage().isDownloaded() == false) {
if (BuildConfig.DEBUG) Log.d(TAG, "Feed has image; Downloading....");
savedFeed.getImage().setOwner(savedFeed);
final Feed savedFeedRef = savedFeed;
try {
requester.downloadImage(DownloadService.this, savedFeedRef.getImage());
} catch (DownloadRequestException e) {
e.printStackTrace();
DBWriter.addDownloadStatus(
DownloadService.this,
new DownloadStatus(
savedFeedRef.getImage(),
savedFeedRef.getImage().getHumanReadableIdentifier(),
DownloadError.ERROR_REQUEST_ERROR,
false,
e.getMessage()));
}
}
numberOfDownloads.decrementAndGet();
}
sendDownloadHandledIntent();
queryDownloadsAsync();
}
});
}
if (dbUpdateFuture != null) {
try {
dbUpdateFuture.get();
} catch (InterruptedException e) {
} catch (ExecutionException e) {
e.printStackTrace();
}
}
if (BuildConfig.DEBUG) Log.d(TAG, "Shutting down");
}
@Override
public void run() {
FeedMedia media = DBReader.getFeedMedia(DownloadService.this, request.getFeedfileId());
if (media == null) {
throw new IllegalStateException("Could not find downloaded media object in database");
}
boolean chaptersRead = false;
media.setDownloaded(true);
media.setFile_url(request.getDestination());
// Get duration
MediaMetadataRetriever mmr = null;
try {
mmr = new MediaMetadataRetriever();
mmr.setDataSource(media.getFile_url());
String durationStr = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
media.setDuration(Integer.parseInt(durationStr));
if (BuildConfig.DEBUG) Log.d(TAG, "Duration of file is " + media.getDuration());
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (RuntimeException e) {
e.printStackTrace();
} finally {
if (mmr != null) {
mmr.release();
}
}
if (media.getItem().getChapters() == null) {
ChapterUtils.loadChaptersFromFileUrl(media);
if (media.getItem().getChapters() != null) {
chaptersRead = true;
}
}
try {
if (chaptersRead) {
DBWriter.setFeedItem(DownloadService.this, media.getItem()).get();
}
DBWriter.setFeedMedia(DownloadService.this, media).get();
if (!DBTasks.isInQueue(DownloadService.this, media.getItem().getId())) {
DBWriter.addQueueItem(DownloadService.this, media.getItem().getId()).get();
}
} catch (ExecutionException e) {
e.printStackTrace();
status =
new DownloadStatus(
media,
media.getEpisodeTitle(),
DownloadError.ERROR_DB_ACCESS_ERROR,
false,
e.getMessage());
} catch (InterruptedException e) {
e.printStackTrace();
status =
new DownloadStatus(
media,
media.getEpisodeTitle(),
DownloadError.ERROR_DB_ACCESS_ERROR,
false,
e.getMessage());
}
saveDownloadStatus(status);
sendDownloadHandledIntent();
numberOfDownloads.decrementAndGet();
queryDownloadsAsync();
}
