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replicant-packages_apps_Email
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Don't use a repeating alarm for AttachmentDownloadService 

* Guarantees we can't have runaway alarms
* Manually merged from Email1

Bug: 6494254
Change-Id: I7f272f650ab34d50ec71ad503951ada3bbf203af
This commit is contained in:
Marc Blank 2012-05-18 13:55:48 -07:00
parent 671965f494
commit 323eea8ac8
2 changed files with 27 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
email2/src/com/android/email/service/AttachmentDownloadService.java
View File

@ -62,7 +62,7 @@ public class AttachmentDownloadService extends Service implements Runnable {
// Our idle time, waiting for notifications; this is something of a failsafe
private static final int PROCESS_QUEUE_WAIT_TIME = 30 * ((int)DateUtils.MINUTE_IN_MILLIS);
// How often our watchdog checks for callback timeouts
private static final int WATCHDOG_CHECK_INTERVAL = 15 * ((int)DateUtils.SECOND_IN_MILLIS);
private static final int WATCHDOG_CHECK_INTERVAL = 20 * ((int)DateUtils.SECOND_IN_MILLIS);
// How long we'll wait for a callback before canceling a download and retrying
private static final int CALLBACK_TIMEOUT = 30 * ((int)DateUtils.SECOND_IN_MILLIS);
// Try to download an attachment in the background this many times before giving up
@ -235,7 +235,6 @@ public class AttachmentDownloadService extends Service implements Runnable {
/*package*/ class DownloadSet extends TreeSet<DownloadRequest> {
private static final long serialVersionUID = 1L;
private PendingIntent mWatchdogPendingIntent;
private AlarmManager mAlarmManager;
/*package*/ DownloadSet(Comparator<? super DownloadRequest> comparator) {
super(comparator);
@ -407,20 +406,13 @@ public class AttachmentDownloadService extends Service implements Runnable {
return count;
}
private void cancelWatchdogAlarm() {
if (mAlarmManager != null && mWatchdogPendingIntent != null) {
mAlarmManager.cancel(mWatchdogPendingIntent);
}
}
/**
* Watchdog for downloads; we use this in case we are hanging on a download, which might
* have failed silently (the connection dropped, for example)
*/
private void onWatchdogAlarm() {
// If our service instance is gone, just leave (but cancel alarm first!)
// If our service instance is gone, just leave
if (mStop) {
cancelWatchdogAlarm();
return;
}
long now = System.currentTimeMillis();
@ -434,14 +426,17 @@ public class AttachmentDownloadService extends Service implements Runnable {
cancelDownload(req);
}
}
// If there are downloads in progress, reset alarm
if (mDownloadsInProgress.isEmpty()) {
cancelWatchdogAlarm();
}
// Check whether we can start new downloads...
if (mConnectivityManager != null && mConnectivityManager.hasConnectivity()) {
processQueue();
}
// If there are downloads in progress, reset alarm
if (!mDownloadsInProgress.isEmpty()) {
if (MailActivityEmail.DEBUG) {
Log.d(TAG, "Reschedule watchdog...");
}
setWatchdogAlarm();
}
}
/**
@ -475,6 +470,19 @@ public class AttachmentDownloadService extends Service implements Runnable {
return mDownloadsInProgress.get(attachmentId);
}
private void setWatchdogAlarm() {
// Lazily initialize the pending intent
if (mWatchdogPendingIntent == null) {
Intent intent = new Intent(mContext, Watchdog.class);
mWatchdogPendingIntent =
PendingIntent.getBroadcast(mContext, 0, intent, 0);
}
// Set the alarm
AlarmManager am = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + WATCHDOG_CHECK_INTERVAL,
mWatchdogPendingIntent);
}
/**
* Do the work of starting an attachment download using the EmailService interface, and
* set our watchdog alarm
@ -489,20 +497,7 @@ public class AttachmentDownloadService extends Service implements Runnable {
req.inProgress = true;
mDownloadsInProgress.put(req.attachmentId, req);
service.loadAttachment(req.attachmentId, req.priority != PRIORITY_FOREGROUND);
// Lazily initialize our (reusable) pending intent
if (mWatchdogPendingIntent == null) {
createWatchdogPendingIntent(mContext);
}
// Set the alarm
mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
System.currentTimeMillis() + WATCHDOG_CHECK_INTERVAL, WATCHDOG_CHECK_INTERVAL,
mWatchdogPendingIntent);
}
/*package*/ void createWatchdogPendingIntent(Context context) {
Intent alarmIntent = new Intent(context, Watchdog.class);
mWatchdogPendingIntent = PendingIntent.getBroadcast(context, 0, alarmIntent, 0);
mAlarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
setWatchdogAlarm();
}
private void cancelDownload(DownloadRequest req) {

5
tests/src/com/android/email/service/AttachmentDownloadServiceTests.java
View File

@ -119,7 +119,6 @@ public class AttachmentDownloadServiceTests extends AccountTestCase {
// Process the queue; attachment 1 should be marked "in progress", and should be in
// the in-progress map
mDownloadSet.createWatchdogPendingIntent(mContext);
mDownloadSet.processQueue();
DownloadRequest req = mDownloadSet.findDownloadRequest(att1.mId);
assertNotNull(req);
@ -183,10 +182,12 @@ public class AttachmentDownloadServiceTests extends AccountTestCase {
mUsableSpace = usable;
}
@Override
public long getTotalSpace() {
return mTotalSpace;
}
@Override
public long getUsableSpace() {
return mUsableSpace;
}
@ -195,6 +196,7 @@ public class AttachmentDownloadServiceTests extends AccountTestCase {
mMockFile.mLength = length;
}
@Override
public File[] listFiles() {
return mFiles;
}
@ -211,6 +213,7 @@ public class AttachmentDownloadServiceTests extends AccountTestCase {
super("_mock");
}
@Override
public long length() {
return mLength;
}