def fswatch_file_written(event):
filepath = event.pathname
filename = event.name
filedir = event.path
# determine username for file
try:
username = filedir[len(settings.MUSIC_PATH):].split(os.path.sep)[1]
except:
# ignore that file
return
try:
user = User.objects.get(username=username)
except User.DoesNotExist:
# ignore that file
return
# determine what to do with the written file
# maybe just update tags or add new song to db
try:
try:
song = Song.objects.get(user=user, path_orig=filepath)
except Song.DoesNotExist:
add_song(filedir, [filename], user)
else:
update_song(song)
except CeleryExceptions.MaxRetriesExceededError:
# well, whorses will have their trinkets
print("fswatch_file_written giving up on file", event.pathname)
return
except Exception, exc:
print("Exception in fswatch_file_written file", event.pathname)
raise fswatch_file_written.retry(exc=exc, countdown=10)
def rescan_task(user_id, max_retires=2, default_retry_delay=10):
user = User.objects.get(id=user_id)
#collection = Collection.objects.get(user=user)
user_status = helper.UserStatus(user)
try:
userdir = os.path.join(settings.MUSIC_PATH, user.username)
############# rescan preparations ###################
# estimating total effort: count users songs on filesystem and in db
amount = 1 # less accurate, but avoid division by 0
for root, dirs, files in os.walk(userdir):
amount += len(files)
songs = Song.objects.filter(user=user)
amount += songs.count() # absolute amount
processed = 0 # absolute progress
so_far = 0 # progress in percent
print ("rescan_task: user", user, "dir", userdir, "absolute amount", amount)
############## check orphans ##################
for s in songs:
if not os.path.isfile(s.path_orig):
print("Deleting orphan entry", s.path_orig)
s.delete()
processed += 1
if so_far > 0 and so_far % 1 == 0:
user_status.set("rescan_status", "%i" % so_far)
print ("rescan_task: user", user, "dir", userdir, "deleting orphans done")
############# check entrys in db if files have changed ##############
for root, dirs, files in os.walk(userdir):
processed += add_song(root, files, user, force=True)
so_far = int((processed*100)/amount)
if so_far > 0 and so_far % 2 == 0:
user_status.set("rescan_status", "%i" % so_far)
user_status.set("rescan_status", "finished")
except CeleryExceptions.MaxRetriesExceededError:
print("MaxRetriesExceededError in rescan by user", user)
# as stated already, whorses will have their trinkets
try:
user_status.set("rescan_status", "error")
except:
print("Giving up rescan for user", user)
# ah, buckle off.
pass
return
except Exception, exc:
print("Exception in rescan for", user, exc)
user_status.set("rescan_status", "error")
raise rescan_task.retry(exc=exc, countdown=10)
