Perhaps the Scheduler can help. On Saturday, July 5, 2014 11:47:39 AM UTC-5, Wonton wrote: > > Hello! > > As I commented in other post ( > https://groups.google.com/forum/#!topic/web2py/ZbEndj2H-fk) I have > problems using APNSWrapper feedback service sending push notifications. > > While I wait for an answer I've thought a possible solution to my problem. > This solution consists in: > 1. I'm going to send push notifications to a series of device tokens. > 2. For the current device token I mark it as "wrong" in the database. > 3. I send the push notifications. > 4.1. If the token is wrong the push notification is not sent and > APNSWrapper fails and the loop of tokens is broken. > 4.2. If the token is right the push notification is sent. > 5. I mark that token as "right" in the database. > > This way I can check the database and remove all tokens marked with > "wrong". > > The problem is that I'm executing this loop not in the main thread and I'm > having lots of problems: crashes, error for database connection closed, > etc... > > This is my code: > > ifcPushnotifications.py (is a module) > push_thread = threading.Thread(target=__sendPushToUsersInBackground, args > =(users, db)) > push_thread.start() > > def __sendPushToUsersInBackground(users, db): > wrapper = APNSNotificationWrapper('mycert.pem', False) > for user in users: > _tokenRow = db(db.push_notifs_table.userId == user['id']) > _tokenRow.update(status='wrong') > __sendPushToUser(user) > _tokenRow.update(status='right') > > > If user's token is wrong __sendPushToUser fails and the loop leaves its > execution, so in the database it should be 'wrong'. > > My problem is that all 3 lines related to database (2 updates and the > query) fail randomly, sometimes crashes, sometimes returns an error of > closed database and do nothing, etc... > > So, how could I use my database inside a thread so I can avoid this errors? > > Thank you very much and kind regards! >
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