def download_submissions(self, request, suffix=''): # pylint: disable=unused-argument
"""
Api for downloading zip file which consist of all students submissions.
"""
require(self.is_course_staff())
user = self.get_real_user()
require(user)
try:
zip_file_path = get_zip_file_path(
user.username,
self.block_course_id,
self.block_id,
self.location
)
zip_file_name = get_zip_file_name(
user.username,
self.block_course_id,
self.block_id
)
return Response(
app_iter=file_contents_iter(zip_file_path),
content_type='application/zip',
content_disposition="attachment; filename=" + zip_file_name.encode('utf-8')
)
except IOError:
return Response(
"Sorry, submissions cannot be found. Press Collect ALL Submissions button or"
" contact {} if you issue is consistent".format(settings.TECH_SUPPORT_EMAIL),
status_code=404
)
def is_zip_file_available(self, user):
"""
returns True if zip file exists.
"""
# pylint: disable=no-member
zip_file_path = get_zip_file_path(user.username, self.block_course_id,
self.block_id, self.location)
return default_storage.exists(zip_file_path)
def count_archive_files(self, user):
"""
returns number of files archive in zip.
"""
zip_file_path = get_zip_file_path(user.username, self.block_course_id,
self.block_id, self.location)
with default_storage.open(zip_file_path, 'rb') as zip_file:
with closing(ZipFile(zip_file)) as archive:
return len(archive.infolist())
def is_zip_file_available(self, user):
"""
returns True if zip file exists.
"""
zip_file_path = get_zip_file_path(
user.username,
self.block_course_id,
self.block_id,
self.location
)
return True if default_storage.exists(zip_file_path) else False
def count_archive_files(self, user):
"""
returns number of files archive in zip.
"""
zip_file_path = get_zip_file_path(
user.username,
self.block_course_id,
self.block_id,
self.location
)
with default_storage.open(zip_file_path, 'rb') as zip_file:
with closing(ZipFile(zip_file)) as archive:
return len(archive.infolist())
def prepare_download_submissions(self, request, suffix=''): # pylint: disable=unused-argument
"""
Runs a async task that collects submissions in background and zip them.
"""
# pylint: disable=no-member
require(self.is_course_staff())
user = self.get_real_user()
require(user)
zip_file_ready = False
location = six.text_type(self.location)
if self.is_zip_file_available(user):
log.info("Zip file already available for block: %s for instructor: %s", location, user.username)
assignments = self.get_sorted_submissions()
if assignments:
last_assignment_date = assignments[0]['timestamp'].astimezone(pytz.utc)
zip_file_path = get_zip_file_path(
user.username,
self.block_course_id,
self.block_id,
self.location
)
zip_file_time = get_file_modified_time_utc(zip_file_path)
log.info(
"Zip file modified time: %s, last zip file time: %s for block: %s for instructor: %s",
last_assignment_date,
zip_file_time,
location,
user.username
)
# if last zip file is older the last submission then recreate task
if zip_file_time >= last_assignment_date:
zip_file_ready = True
# check if some one reset submission. If yes the recreate zip file
assignment_count = len(assignments)
if self.count_archive_files(user) != assignment_count:
zip_file_ready = False
if not zip_file_ready:
log.info("Creating new zip file for block: %s for instructor: %s", location, user.username)
zip_student_submissions.delay(
self.block_course_id,
self.block_id,
location,
user.username
)
return Response(json_body={
"downloadable": zip_file_ready
})
def prepare_download_submissions(self, request, suffix=''): # pylint: disable=unused-argument
"""
Runs a async task that collects submissions in background and zip them.
"""
require(self.is_course_staff())
user = self.get_real_user()
require(user)
zip_file_ready = False
location = unicode(self.location)
if self.is_zip_file_available(user):
log.info("Zip file already available for block: %s for instructor: %s", location, user.username)
assignments = self.get_sorted_submissions()
if assignments:
last_assignment_date = assignments[0]['timestamp'].astimezone(pytz.utc)
zip_file_path = get_zip_file_path(
user.username,
self.block_course_id,
self.block_id,
self.location
)
zip_file_time = get_file_modified_time_utc(zip_file_path)
log.info(
"Zip file modified time: %s, last zip file time: %s for block: %s for instructor: %s",
last_assignment_date,
zip_file_time,
location,
user.username
)
# if last zip file is older the last submission then recreate task
if zip_file_time >= last_assignment_date:
zip_file_ready = True
# check if some one reset submission. If yes the recreate zip file
assignment_count = len(assignments)
if self.count_archive_files(user) != assignment_count:
zip_file_ready = False
if not zip_file_ready:
log.info("Creating new zip file for block: %s for instructor: %s", location, user.username)
zip_student_submissions.delay(
self.block_course_id,
self.block_id,
location,
user.username
)
return Response(json_body={
"downloadable": zip_file_ready
})
def download_submissions(self, request, suffix=''): # pylint: disable=unused-argument
"""
Api for downloading zip file which consist of all students submissions.
"""
require(self.is_course_staff())
user = self.get_real_user()
require(user)
try:
zip_file_path = get_zip_file_path(user.username,
self.block_course_id,
self.block_id, self.location)
zip_file_name = get_zip_file_name(user.username,
self.block_course_id,
self.block_id)
return Response(app_iter=file_contents_iter(zip_file_path),
content_type='application/zip',
content_disposition="attachment; filename=" +
zip_file_name.encode('utf-8'))
except IOError:
return Response(
"Sorry, submissions cannot be found. Press Collect ALL Submissions button or"
" contact {} if you issue is consistent".format(
settings.TECH_SUPPORT_EMAIL),
status_code=404)
