changed scheduling to apscheduler

fileHost.py

@@ -17,6 +17,7 @@ from flask import Flask, session, request, abort, redirect, url_for, g, \
 	render_template
 from werkzeug.utils import secure_filename
 from flask_paranoid import Paranoid
+from apscheduler.schedulers.background import BackgroundScheduler
 
 class ReverseProxied(object):
 	"""
@@ -53,22 +54,6 @@ class ReverseProxied(object):
 		return self.app(environ, start_response)
 
 
-class CronThread(threading.Thread):
-	def __init__(self):
-		threading.Thread.__init__(self)
-		self.stop = threading.Event()
-
-	def run(self):
-		while not self.stop.is_set():
-			records = db_execute(
-				"SELECT filename, delete_date FROM uploads WHERE delete_date"
-				).fetchall()
-			for filename, delete_date in records:
-				if time.time() >= delete_date:
-					delete_file(filename)
-			self.stop.wait(60)
-
-
 app = Flask(__name__)
 app.wsgi_app = ReverseProxied(app.wsgi_app)
 app.config['MAX_CONTENT_LENGTH'] = 128 * 1024 * 1024
@@ -80,6 +65,9 @@ app.config["DB_LOCK"] = threading.Lock()
 paranoid = Paranoid(app)
 paranoid.redirect_view = 'login'
 
+scheduler = BackgroundScheduler(timezone="America/New_York")
+scheduler.start()
+
 
 def db_execute(*args, **kwargs):
 	"""
@@ -94,6 +82,19 @@ def db_execute(*args, **kwargs):
 		return res
 
 
+@scheduler.scheduled_job("interval", minutes=1)
+def delete_this():
+	"""
+	Removes files that are past the expiration date.
+	"""
+	records = db_execute(
+		"SELECT filename, delete_date FROM uploads WHERE delete_date"
+		).fetchall()
+	for filename, delete_date in records:
+		if time.time() >= delete_date:
+			delete_file(filename)
+
+
 def init():
 	"""
 	Initializes the application.
@@ -127,11 +128,6 @@ def init():
 			"uploaded_date INTEGER DEFAULT (STRFTIME('%s', 'now')),"
 			"delete_date INTEGER)")
 
-	# init cron thread
-	t = CronThread()
-	t.start()
-	app.config["CRON_THREAD"] = t
-
 
 def add_user(username, password, admin="FALSE"):
 	"""
@@ -429,7 +425,7 @@ def get_rand_chars(n):
 
 
 init()
-atexit.register(app.config["CRON_THREAD"].stop.set)
+atexit.register(scheduler.shutdown)
 if __name__ == "__main__":
 	import sys
 	if len(sys.argv) > 1: