From bdb00c28a02f844c6832d5438bc60328dd47aced Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Thu, 15 Dec 2011 21:16:05 +0100
Subject: tracking: Added timeout with error handling.

---
 modules/tracking.py | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/modules/tracking.py b/modules/tracking.py
index 0f3ae22..548faa2 100644
--- a/modules/tracking.py
+++ b/modules/tracking.py
@@ -55,7 +55,8 @@ class Package(Base):
 		self.consignment_id = consignment_id
 		self.code = code
 
-class NoPackageFound(Exception): pass
+class PackageError(Exception): pass
+class NoPackageFound(PackageError): pass
 
 class TrackingResult:
 	def __init__(self, code, date, desc, delivered = False):
@@ -80,9 +81,9 @@ class PostenModule(TrackingModule):
 
 	def get_xml(self, url):
 		try:
-			u = urllib2.urlopen(url)
-		except:
-			return
+			u = urllib2.urlopen(url, timeout = config.getfloat('module/tracking', 'timeout'))
+		except Exception as e:
+			raise PackageError(str(e))
 		if u.headers['content-type'].startswith('application/xml'):
 			xml = etree.parse(u)
 		else:
@@ -215,12 +216,16 @@ class Module:
 				consignments = consignments.filter(Consignment.nick == nick)
 			results = []
 			for row in consignments:
-				self.track_update(row.code)
-				i = 0
 				if row.label:
 					label = ' (%s)' % row.label
 				else:
 					label = ''
+				try:
+					self.track_update(row.code, propagate_error = True)
+				except PackageError as e:
+					results.append('Failed to fetch data for \002%s\002%s.' % (row.code.decode('utf-8'), label))
+					continue
+				i = 0
 
 				for package in row.packages:
 					i += 1
@@ -251,7 +256,7 @@ class Module:
 						msg = 'Failed to fetch tracking data for \002%s\002.' % code.decode('utf8')
 					else:
 						msg = 'No tracking number given or registered.'
-				except NoPackageFound as e:
+				except PackageError as e:
 					msg = str(e)
 		finally:
 			session.close()
@@ -343,16 +348,16 @@ class Module:
 			self.irc.msg(channel if not channel == self.irc.nickname else nick.split('!')[0], 'No data returned (this is a bug).')
 
 	# called by start and status
-	def track_update(self, code, announce = False):
+	def track_update(self, code, announce = False, propagate_error = False):
 		try:
 			session = Session()
 			consignment = session.query(Consignment).filter(Consignment.code == code).one()
-			self.update_consignment(session, consignment, announce)
+			self.update_consignment(session, consignment, announce, propagate_error)
 			session.commit()
 		finally:
 			session.close()
 
-	def update_consignment(self, session, consignment, announce = True):
+	def update_consignment(self, session, consignment, announce = True, propagate_error = False):
 		now = datetime.datetime.utcnow()
 		td = datetime.timedelta(seconds = config.getint(cfg_section, 'cache_time'))
 		# return if consignment was cached within cache_time seconds
@@ -366,7 +371,9 @@ class Module:
 		tm = tracking_modules[consignment.type]()
 		try:
 			package_results = tm.track(consignment.code) or []
-		except NoPackageFound as e:
+		except PackageError as e:
+			if propagate_error:
+				raise e
 			# ignore
 			return
 		for data in package_results:
-- 
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