def check_availability(self):
"""
Perform check against Default Storage.
"""
try:
name = default_storage.get_valid_name('Informer Storage')
# Save data.
content = ContentFile('File used by StorageInformer checking.')
path = default_storage.save(name, content)
# Check properties.
default_storage.size(path)
default_storage.url(path)
default_storage.path(path)
default_storage.modified_time(path)
default_storage.created_time(path)
# And remove file.
default_storage.delete(path)
storage = default_storage.__class__.__name__
except Exception as error:
raise InformerException(
'A error occured when trying access your database: %s' % error)
else:
return True, 'Your %s is operational.' % storage
def thumbnail(file, size='200x200'):
# defining the size
x, y = [int(x) for x in size.split('x')]
# defining the filename and the miniature filename
filehead, filetail = os.path.split(file.name)
basename, format = os.path.splitext(filetail)
miniature = basename + '_' + size + format
filename = file.name
miniature_filename = os.path.join(filehead, miniature)
filehead, filetail = os.path.split(file.url)
miniature_url = filehead + '/' + miniature
thumbnail_exist = False
if default_storage.exists(miniature_filename):
mt_filename = default_storage.modified_time(filename)
mt_miniature_filename = default_storage.modified_time(
miniature_filename)
if mt_filename > mt_miniature_filename:
# remove the miniature
default_storage.delete(miniature_filename)
else:
thumbnail_exist = True
# if the image wasn't already resized, resize it
if not thumbnail_exist:
#image = Image.open(filename)
image = Image.open(default_storage.open(filename))
image.thumbnail([x, y], Image.ANTIALIAS)
f = default_storage.open(miniature_filename, 'w')
image.save(f, image.format, quality=90, optimize=1)
f.close()
return miniature_url
def thumbnail(file, size="200x200"):
# defining the size
x, y = [int(x) for x in size.split("x")]
# defining the filename and the miniature filename
filehead, filetail = os.path.split(file.name)
basename, format = os.path.splitext(filetail)
miniature = basename + "_" + size + format
filename = file.name
miniature_filename = os.path.join(filehead, miniature)
filehead, filetail = os.path.split(file.url)
miniature_url = filehead + "/" + miniature
thumbnail_exist = False
if default_storage.exists(miniature_filename):
mt_filename = default_storage.modified_time(filename)
mt_miniature_filename = default_storage.modified_time(miniature_filename)
if mt_filename > mt_miniature_filename:
# remove the miniature
default_storage.delete(miniature_filename)
else:
thumbnail_exist = True
# if the image wasn't already resized, resize it
if not thumbnail_exist:
# image = Image.open(filename)
image = Image.open(default_storage.open(filename))
image.thumbnail([x, y], Image.ANTIALIAS)
f = default_storage.open(miniature_filename, "w")
image.save(f, image.format, quality=90, optimize=1)
f.close()
return miniature_url
def serve(request, path):
"""
Serve static files below a given point in the directory structure.
To use, put a URL pattern such as::
(r'^(?P<path>.*)$', 'django.views.static.serve', {'document_root' : '/path/to/my/files/'})
"""
# file_record = File.objects.filter(path=path).first()
if not default_storage.exists(path):
raise Http404(u'页面不存在')
# TODO if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
# statobj.st_mtime, statobj.st_size):
# return HttpResponseNotModified()
last_modified = formatdate(
time.mktime(default_storage.modified_time(path).timetuple()))
content_type, encoding = mimetypes.guess_type(path)
content_type = content_type or 'application/octet-stream'
file_data = default_storage.open(path).read()
response = HttpResponse(file_data, content_type=content_type)
response["Last-Modified"] = last_modified
response["Content-Length"] = default_storage.size(path)
if encoding:
response["Content-Encoding"] = encoding
print 'serving file %s %s' % (len(file_data), path)
return response
def _date(self):
if self._date_stored != None:
return self._date_stored
if self.exists():
self._date_stored = time.mktime(default_storage.modified_time(self.path).timetuple())
return self._date_stored
return None
def cleanup_extracted_file():
log.info('Removing extracted files for file viewer.')
root = os.path.join(settings.TMP_PATH, 'file_viewer')
# Local storage uses local time for file modification. S3 uses UTC time.
now = datetime.utcnow if storage_is_remote() else datetime.now
for path in storage.listdir(root)[0]:
full = os.path.join(root, path)
age = now() - storage.modified_time(os.path.join(full,
'manifest.webapp'))
if age.total_seconds() > (60 * 60):
log.debug('Removing extracted files: %s, %dsecs old.' %
(full, age.total_seconds()))
for subroot, dirs, files in walk_storage(full):
for f in files:
storage.delete(os.path.join(subroot, f))
# Nuke out the file and diff caches when the file gets removed.
id = os.path.basename(path)
try:
int(id)
except ValueError:
continue
key = hashlib.md5()
key.update(str(id))
cache.delete('%s:memoize:%s:%s' % (settings.CACHE_PREFIX,
'file-viewer', key.hexdigest()))
def story_download(request, story_id, filename, extension):
from django.core.files.storage import default_storage as storage
from ..downloads import get_format
debug = settings.DEBUG and 'debug' in request.META['QUERY_STRING']
story = get_object_or_404(Story, pk=story_id)
fmt = get_format(extension)
if fmt is None:
raise Http404
url = fmt.url(story)
if url != request.path:
return redirect(url)
filepath = 'stories/%s/%s.%s' % (story_id, filename, extension)
if (not storage.exists(filepath) or
storage.modified_time(filepath) < story.updated or
debug):
data = fmt.render(
story=story,
filename=filename,
extension=extension,
debug=debug,
)
if not debug:
storage.save(filepath, ContentFile(data))
if not debug:
return redirect(storage.url(filepath))
else:
response = HttpResponse(data)
response['Content-Type'] = fmt.debug_content_type
return response
def _date(self):
if self._date_stored != None:
return self._date_stored
if self.exists():
self._date_stored = time.mktime(default_storage.modified_time(self.path).timetuple())
return self._date_stored
return None
def test_modified_time(self):
with self.save_file():
modified_time = default_storage.modified_time("test.txt")
logging.info("modified time: %s", modified_time)
self.assertTrue(is_naive(modified_time))
self.assertLess(abs(modified_time - make_naive(timezone.now(), utc)), timedelta(seconds=10))
self.assertEqual(default_storage.accessed_time("test.txt"), modified_time)
self.assertEqual(default_storage.created_time("test.txt"), modified_time)
def testModifiedTime(self):
with self.save_file():
modified_time = default_storage.modified_time("foo.txt")
# Check that the timestamps are roughly equals.
self.assertLess(abs(modified_time - make_naive(timezone.now(), utc)), timedelta(seconds=10))
# All other timestamps are slaved to modified time.
self.assertEqual(default_storage.accessed_time("foo.txt"), modified_time)
self.assertEqual(default_storage.created_time("foo.txt"), modified_time)
def handle(self, *args, **options):
for exported_file in default_storage.listdir(EXPORTS_SAVE_PATH)[1]:
if exported_file == 'DONOTDELTETHISFOLDER':
continue
exported_file = '%s%s' % (EXPORTS_SAVE_PATH, exported_file)
modified_time_delta = datetime.datetime.now() - default_storage.modified_time(exported_file)
if modified_time_delta > datetime.timedelta(days=1):
default_storage.delete(exported_file)
def compress_files(directories, dirtree, new_only=False):
compressed_flag = settings.DIET_FLAG_PROCESSED_FILE
for f in directories[1]: # files from listdir
if f and f.lower().endswith(('.png', '.jpg', '.jpeg',
'.gif')): # sometimes if == [u'']
dir_path = os.sep.join(dirtree)
path = os.path.join(dir_path, f)
flagged_file_name = '.%s.%s' % (f, compressed_flag)
flag_path = os.path.join(dir_path, flagged_file_name)
print("Processing %s" % path)
if new_only:
should_process_file = False
if not default_storage.exists(flag_path):
should_process_file = True
else:
file_mt = default_storage.modified_time(path)
try:
flag_mt = default_storage.modified_time(
flag_path)
except AttributeError:
flag_mt = datetime.datetime.fromtimestamp(0)
if flag_mt < file_mt:
should_process_file = True
if should_process_file:
process_file(path)
else:
process_file(path)
# add flag, for all files. This flag is used only when "new_only" option is called.
if default_storage.exists(flag_path):
default_storage.delete(flag_path)
default_storage.save(flag_path, ContentFile(""))
for d in directories[0]: # directories from list_dir
dirtree.append(d)
d = default_storage.listdir(os.sep.join(dirtree))
compress_files(d, dirtree, new_only)
dirtree.pop() # remove last item, not needed anymore
def test_create_thumbnails_command(self):
call_command("create_image_thumbnails")
created_times = {}
for attachment in Attachment.objects.filter(instance=self.instance):
filename = attachment.media_file.name.replace('.jpg', '')
for size in settings.THUMB_CONF.keys():
thumbnail = '%s-%s.jpg' % (filename, size)
self.assertTrue(default_storage.exists(thumbnail))
created_times[size] = default_storage.modified_time(thumbnail)
# replace or regenerate thumbnails if they exist
call_command("create_image_thumbnails", force=True)
for attachment in Attachment.objects.filter(instance=self.instance):
filename = attachment.media_file.name.replace('.jpg', '')
for size in settings.THUMB_CONF.keys():
thumbnail = '%s-%s.jpg' % (filename, size)
self.assertTrue(default_storage.exists(thumbnail))
self.assertTrue(
default_storage.modified_time(thumbnail) >
created_times[size])
default_storage.delete(thumbnail)
def _get_files(self):
all_files, res = [], OrderedDict()
# Not using os.path.walk so we get just the right order.
def iterate(path):
path_dirs, path_files = storage.listdir(path)
for dirname in sorted(path_dirs):
full = os.path.join(path, dirname)
all_files.append(full)
iterate(full)
for filename in sorted(path_files):
full = os.path.join(path, filename)
all_files.append(full)
iterate(self.dest)
for path in all_files:
filename = smart_unicode(os.path.basename(path), errors='replace')
short = smart_unicode(path[len(self.dest) + 1:], errors='replace')
mime, encoding = mimetypes.guess_type(filename)
if not mime and filename == 'manifest.webapp':
mime = 'application/x-web-app-manifest+json'
if storage_is_remote():
# S3 doesn't have directories, so we check for names with this
# prefix and call it a directory if there are some.
subdirs, subfiles = storage.listdir(path)
directory = bool(subdirs or subfiles)
else:
directory = os.path.isdir(path)
res[short] = {
'binary': self._is_binary(mime, path),
'depth': short.count(os.sep),
'directory': directory,
'filename': filename,
'full': path,
'md5': get_md5(path) if not directory else '',
'mimetype': mime or 'application/octet-stream',
'syntax': self.get_syntax(filename),
'modified': (
time.mktime(storage.modified_time(path).timetuple())
if not directory else 0),
'short': short,
'size': storage.size(path) if not directory else 0,
'truncated': self.truncate(filename),
'url': reverse('mkt.files.list',
args=[self.file.id, 'file', short]),
'url_serve': reverse('mkt.files.redirect',
args=[self.file.id, short]),
'version': self.file.version.version,
}
return res
def get_file_modified_time_utc(file_path):
"""
Gets the UTC timezone-aware modified time of a file at the given file path
"""
file_timezone = (
# time.tzname returns a 2 element tuple:
# (local non-DST timezone, e.g.: 'EST', local DST timezone, e.g.: 'EDT')
pytz.timezone(time.tzname[0]) if settings.DEFAULT_FILE_STORAGE
== 'django.core.files.storage.FileSystemStorage' else pytz.utc)
return file_timezone.localize(
default_storage.modified_time(file_path)).astimezone(pytz.utc)
def compress_files(data, dirtree, new_only=False):
django_basic_cms_compressed_flag = "dbc_compressed"
for f in data[1]: # files from listdir
if f and f.lower().endswith(('.png', '.jpg', '.jpeg',
'.gif')): # sometimes if == [u'']
dir_path = os.sep.join(dirtree)
path = os.path.join(dir_path, f)
flagged_file_name = '.%s.%s' % (
f, django_basic_cms_compressed_flag)
flag_path = os.path.join(dir_path, flagged_file_name)
print("Processing %s" % path)
if new_only:
should_process_file = False
if not default_storage.exists(flag_path):
should_process_file = True
else:
file_mt = default_storage.modified_time(path)
flag_mt = default_storage.modified_time(flag_path)
if flag_mt < file_mt:
should_process_file = True
if should_process_file:
process_file(path)
else:
process_file(path)
# add flag, for all files. This flag is used only when "new_only" option is called.
if default_storage.exists(flag_path):
default_storage.delete(flag_path)
default_storage.save(flag_path, ContentFile(""))
for d in data[0]: # directories from list_dir
dirtree.append(d)
d = default_storage.listdir(os.sep.join(dirtree))
compress_files(d, dirtree, new_only)
dirtree.pop() # remove last item, not needed anymore
def clean_old_signed(seconds=60 * 60):
"""Clean out apps signed for reviewers."""
log.info('Removing old apps signed for reviewers')
root = settings.SIGNED_APPS_REVIEWER_PATH
# Local storage uses local time for file modification. S3 uses UTC time.
now = datetime.utcnow if storage_is_remote() else datetime.now
for nextroot, dirs, files in walk_storage(root):
for fn in files:
full = os.path.join(nextroot, fn)
age = now() - storage.modified_time(full)
if age.total_seconds() > seconds:
log.debug('Removing signed app: %s, %dsecs old.' % (
full, age.total_seconds()))
storage.delete(full)
def get_file_modified_time_utc(file_path):
"""
Gets the UTC timezone-aware modified time of a file at the given file path
"""
file_timezone = (
# time.tzname returns a 2 element tuple:
# (local non-DST timezone, e.g.: 'EST', local DST timezone, e.g.: 'EDT')
pytz.timezone(time.tzname[0])
if settings.DEFAULT_FILE_STORAGE == 'django.core.files.storage.FileSystemStorage'
else pytz.utc
)
return file_timezone.localize(
default_storage.modified_time(file_path)
).astimezone(
pytz.utc
)
def directory_cleanup(dir_path, ndays):
"""
Delete the files that are older than 'ndays' in the directory 'dir_path'
The 'dir_path' should be a relative path. We cannot use os.walk.
"""
foldernames, filenames = default_storage.listdir(dir_path)
for filename in filenames:
if not filename:
continue
file_path = os.path.join(dir_path, filename)
modified_dt = default_storage.modified_time(file_path)
if modified_dt + timedelta(days=ndays) < datetime.now():
# the file is older than ndays, delete it
default_storage.delete(file_path)
for foldername in foldernames:
folder_path = os.path.join(dir_path, foldername)
directory_cleanup(folder_path, ndays)
def directory_cleanup(dir_path, ndays):
"""
Delete the files that are older than 'ndays' in the directory 'dir_path'
The 'dir_path' should be a relative path. We cannot use os.walk.
"""
foldernames, filenames = default_storage.listdir(dir_path)
for filename in filenames:
if not filename:
continue
file_path = os.path.join(dir_path, filename)
modified_dt = default_storage.modified_time(file_path)
if modified_dt + timedelta(days=ndays) < datetime.now():
# the file is older than ndays, delete it
default_storage.delete(file_path)
for foldername in foldernames:
folder_path = os.path.join(dir_path, foldername)
directory_cleanup(folder_path, ndays)
def test_create_thumbnails_command(self):
call_command("create_image_thumbnails")
for attachment in Attachment.objects.filter(instance=self.instance):
filename = attachment.media_file.name.replace('.jpg', '')
for size in ['small', 'medium', 'large']:
thumbnail = '%s-%s.jpg' % (filename, size)
self.assertTrue(default_storage.exists(thumbnail))
check_datetime = datetime.now()
# replace or regenerate thumbnails if they exist
call_command("create_image_thumbnails", force=True)
for attachment in Attachment.objects.filter(instance=self.instance):
filename = attachment.media_file.name.replace('.jpg', '')
for size in ['small', 'medium', 'large']:
thumbnail = '%s-%s.jpg' % (filename, size)
self.assertTrue(default_storage.exists(thumbnail))
self.assertTrue(
default_storage.modified_time(thumbnail) > check_datetime)
default_storage.delete(thumbnail)
def test_create_thumbnails_command(self):
call_command("create_image_thumbnails")
for attachment in Attachment.objects.filter(instance=self.instance):
filename = attachment.media_file.name.replace('.jpg', '')
for size in ['small', 'medium', 'large']:
thumbnail = '%s-%s.jpg' % (filename, size)
self.assertTrue(
default_storage.exists(thumbnail))
check_datetime = datetime.now()
# replace or regenerate thumbnails if they exist
call_command("create_image_thumbnails", force=True)
for attachment in Attachment.objects.filter(instance=self.instance):
filename = attachment.media_file.name.replace('.jpg', '')
for size in ['small', 'medium', 'large']:
thumbnail = '%s-%s.jpg' % (filename, size)
self.assertTrue(
default_storage.exists(thumbnail))
self.assertTrue(
default_storage.modified_time(thumbnail) > check_datetime)
default_storage.delete(thumbnail)
def get_archive_list(force=False, from_date=None):
"""
Gets a list of APOD items from the APOD archive page
Only downloads the file if out of date
Returns a list of dicts with publish_date and title keys
"""
cache_file = '%s/archive.html' % CACHE_FOLDER
if storage.exists(cache_file) and (force or storage.modified_time(cache_file).date() < datetime.date.today()):
storage.delete(cache_file)
# Download archive HTML if needed
if not storage.exists(cache_file):
f = urllib2.urlopen(settings.APOD_ARCHIVE_URL)
html = f.read()
# Write it to disk
storage.save(cache_file, ContentFile(html))
# Read HTML
with storage.open(cache_file) as f:
html = f.read()
# Parse HTML
html_soup = BSoup(html)
archive_links = html_soup.b.findAll("a")
for link in archive_links:
publish_date = dateparser.parse(link.previous.strip().strip(':')).date()
if from_date and publish_date <= from_date:
return
yield {
'publish_date': publish_date,
'title': unicode(link.next),
}
def get_course_report_download_details(course_id, report_name):
"""
Determine the path that the report file should be located at,
then return metadata sufficient for downloading it.
"""
report_location_template = getattr(
settings,
'COURSE_REPORT_FILE_LOCATION_TEMPLATE',
'{course_id}_{report_name}.csv'
)
# Course IDs contain characters that may not be valid in various
# filesystems; here we remove them before looking for the file or
# creating the downloadable filename.
course_id = get_filename_safe_course_id(course_id)
report_location = report_location_template.format(
course_id=course_id,
report_name=report_name
)
try:
if not default_storage.exists(report_location):
raise ReportFileNotFoundError(course_id=course_id, report_name=report_name)
except (
AttributeError,
NotImplementedError,
ImportError,
SuspiciousFileOperation,
SuspiciousOperation
):
# Error out if:
# - We don't have a method to determine file existence
# - Such a method isn't implemented
# - We can't import the specified storage class
# - We don't have privileges for the specified file location
raise CannotCreateReportDownloadLinkError
try:
last_modified = default_storage.modified_time(report_location)
except (NotImplementedError, AttributeError):
last_modified = None
try:
download_size = default_storage.size(report_location)
except (NotImplementedError, AttributeError):
download_size = None
download_filename = '{}-{}-{}.csv'.format(
course_id,
report_name,
# We need a date for the filename; if we don't know when it was last modified,
# use the current date and time to stamp the filename.
(last_modified or datetime.datetime.utcnow()).strftime('%Y%m%dT%H%M%SZ')
)
url, expiration_date = get_file_object_url(report_location, download_filename)
details = {
'course_id': course_id,
'report_name': report_name,
'download_url': url
}
# These are all optional items that aren't guaranteed. The URL isn't guaranteed
# either, but we'll raise an exception earlier if we don't have it.
if last_modified is not None:
details.update({'last_modified': last_modified.strftime(settings.DATETIME_FORMAT)})
if expiration_date is not None:
details.update({'expiration_date': expiration_date.strftime(settings.DATETIME_FORMAT)})
if download_size is not None:
details.update({'file_size': download_size})
return details
def _get_files(self):
all_files, res = [], OrderedDict()
# Not using os.path.walk so we get just the right order.
def iterate(path):
path_dirs, path_files = storage.listdir(path)
for dirname in sorted(path_dirs):
full = os.path.join(path, dirname)
all_files.append(full)
iterate(full)
for filename in sorted(path_files):
full = os.path.join(path, filename)
all_files.append(full)
iterate(self.dest)
for path in all_files:
filename = smart_unicode(os.path.basename(path), errors='replace')
short = smart_unicode(path[len(self.dest) + 1:], errors='replace')
mime, encoding = mimetypes.guess_type(filename)
if not mime and filename == 'manifest.webapp':
mime = 'application/x-web-app-manifest+json'
if storage_is_remote():
# S3 doesn't have directories, so we check for names with this
# prefix and call it a directory if there are some.
subdirs, subfiles = storage.listdir(path)
directory = bool(subdirs or subfiles)
else:
directory = os.path.isdir(path)
res[short] = {
'binary':
self._is_binary(mime, path),
'depth':
short.count(os.sep),
'directory':
directory,
'filename':
filename,
'full':
path,
'md5':
get_md5(path) if not directory else '',
'mimetype':
mime or 'application/octet-stream',
'syntax':
self.get_syntax(filename),
'modified':
(time.mktime(storage.modified_time(path).timetuple())
if not directory else 0),
'short':
short,
'size':
storage.size(path) if not directory else 0,
'truncated':
self.truncate(filename),
'url':
reverse('mkt.files.list', args=[self.file.id, 'file', short]),
'url_serve':
reverse('mkt.files.redirect', args=[self.file.id, short]),
'version':
self.file.version.version,
}
return res
def mtime(self):
try:
return default_storage.modified_time(self.get_local_path())
except FileNotFoundError:
return None
def get_course_report_download_details(course_id, report_name):
"""
Determine the path that the report file should be located at,
then return metadata sufficient for downloading it.
"""
report_location_template = getattr(settings,
'COURSE_REPORT_FILE_LOCATION_TEMPLATE',
'{course_id}_{report_name}.csv')
# Course IDs contain characters that may not be valid in various
# filesystems; here we remove them before looking for the file or
# creating the downloadable filename.
course_id = get_filename_safe_course_id(course_id)
report_location = report_location_template.format(course_id=course_id,
report_name=report_name)
try:
if not default_storage.exists(report_location):
raise ReportFileNotFoundError(course_id=course_id,
report_name=report_name)
except (AttributeError, NotImplementedError, ImportError,
SuspiciousFileOperation, SuspiciousOperation):
# Error out if:
# - We don't have a method to determine file existence
# - Such a method isn't implemented
# - We can't import the specified storage class
# - We don't have privileges for the specified file location
raise CannotCreateReportDownloadLinkError
try:
last_modified = default_storage.modified_time(report_location)
except (NotImplementedError, AttributeError):
last_modified = None
try:
download_size = default_storage.size(report_location)
except (NotImplementedError, AttributeError):
download_size = None
download_filename = '{}-{}-{}.csv'.format(
course_id,
report_name,
# We need a date for the filename; if we don't know when it was last modified,
# use the current date and time to stamp the filename.
(last_modified
or datetime.datetime.utcnow()).strftime('%Y%m%dT%H%M%SZ'))
url, expiration_date = get_file_object_url(report_location,
download_filename)
details = {
'course_id': course_id,
'report_name': report_name,
'download_url': url
}
# These are all optional items that aren't guaranteed. The URL isn't guaranteed
# either, but we'll raise an exception earlier if we don't have it.
if last_modified is not None:
details.update({
'last_modified':
last_modified.strftime(settings.DATETIME_FORMAT)
})
if expiration_date is not None:
details.update({
'expiration_date':
expiration_date.strftime(settings.DATETIME_FORMAT)
})
if download_size is not None:
details.update({'file_size': download_size})
return details
def _get_key(image):
if order_titles:
return image['title']
return default_storage.modified_time(image['src'])
def test_mtime(self):
""" Ensure we can get the modified time """
mtime = default_storage.modified_time(self.filepath)
self.assertIsNotNone(mtime)
def generate(self):
if hasattr(self.dest, 'write'):
self._do_generate()
else:
do_generate = False
if self.cache_dir is not None:
if isinstance(self.source_image, FieldFile) or \
isinstance(self.source_image, File):
source_image = force_unicode(self.source_image)
elif not isinstance(self.source_image, basestring):
source_image = pickle.dumps(self.source_image.read())
self.source_image.seek(0)
else:
source_image = smart_str(force_unicode(self.source_image))
source_image = os.path.join(self.cache_dir,
md5_constructor(source_image).hexdigest())
if not os.path.exists(source_image):
path = os.path.split(source_image)[0]
if not os.path.exists(path):
os.makedirs(path)
open(source_image, 'w').close()
if not isinstance(self.dest, basestring):
dest = pickle.dumps(self.dest.read())
self.dest.seek(0)
else:
dest = smart_str(force_unicode(self.dest))
dest = os.path.join(self.cache_dir,
md5_constructor(dest).hexdigest())
else:
source_image = force_unicode(self.source_image)
dest = self.dest
# If the destination file does not exist then generate it
if not os.path.exists(dest):
do_generate = True
else:
# otherwise do this hodge podge of time comparisons
if hasattr(default_storage, 'modified_time') and not self.cache_dir:
do_generate = default_storage.modified_time(source_image) > \
default_storage.modified_time(dest)
elif hasattr(default_storage, 'getmtime') and not self.cache_dir:
# An old custom method from before Django supported
# modified_time(). Kept around for backwards compatibility.
do_generate = default_storage.getmtime(source_image) > \
default_storage.getmtime(dest)
else:
if not self.cache_dir:
source_image_cache = os.path.join(settings.MEDIA_ROOT, source_image)
dest_cache = os.path.join(settings.MEDIA_ROOT, dest)
else:
source_image_cache, dest_cache = source_image, dest
try:
do_generate = os.path.getmtime(source_image_cache) > \
os.path.getmtime(dest_cache)
except OSError:
do_generate = True
if do_generate:
if self.cache_dir is not None:
path = os.path.split(dest)[0]
if not os.path.exists(path):
os.makedirs(path)
open(dest, 'w').close()
try:
self._do_generate()
except:
if self.cache_dir is not None:
if os.path.exists(dest):
os.remove(dest)
raise
def generate(self):
if hasattr(self.dest, 'write'):
self._do_generate()
else:
do_generate = False
if self.cache_dir is not None:
if isinstance(self.source, FieldFile) or \
isinstance(self.source, File):
source = force_unicode(self.source)
elif not isinstance(self.source, basestring):
source = pickle.dumps(self.source.read())
self.source.seek(0)
else:
source = smart_str(force_unicode(self.source))
source = os.path.join(self.cache_dir,
hashlib.md5(source).hexdigest())
if not os.path.exists(source):
path = os.path.split(source)[0]
if not os.path.exists(path):
os.makedirs(path)
open(source, 'w').close()
if not isinstance(self.dest, basestring):
dest = pickle.dumps(self.dest.read())
self.dest.seek(0)
else:
dest = smart_str(force_unicode(self.dest))
dest = os.path.join(self.cache_dir,
hashlib.md5(dest).hexdigest())
else:
source = force_unicode(self.source)
dest = self.dest
if hasattr(default_storage, 'modified_time') and not self.cache_dir:
try:
source_mod_time = default_storage.modified_time(source)
except EnvironmentError:
# Means the source file doesn't exist, so nothing can be
# done.
do_generate = False
else:
try:
dest_mod_time = default_storage.modified_time(dest)
except EnvironmentError:
# Means the destination file doesn't exist so it must be
# generated.
do_generate = True
else:
do_generate = source_mod_time > dest_mod_time
else:
if not self.cache_dir:
source_cache = os.path.join(settings.MEDIA_ROOT, source)
dest_cache = os.path.join(settings.MEDIA_ROOT, dest)
else:
source_cache, dest_cache = source, dest
try:
do_generate = os.path.getmtime(source_cache) > \
os.path.getmtime(dest_cache)
except OSError:
do_generate = True
if do_generate:
if self.cache_dir is not None:
path = os.path.split(dest)[0]
if not os.path.exists(path):
os.makedirs(path)
open(dest, 'w').close()
try:
self._do_generate()
except:
if self.cache_dir is not None:
if os.path.exists(dest):
os.remove(dest)
raise
def date(self):
if self.exists:
return time.mktime(
default_storage.modified_time(self.path).timetuple())
return None
def date(self):
if self.exists:
return time.mktime(
default_storage.modified_time(self.path).timetuple())
return None
