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Catch Imagemagick policy error

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This commit is contained in:
Ozzieisaacs 2019-02-09 12:58:43 +01:00
parent 6fc4b318e8
commit d58d792f56
1 changed files with 13 additions and 6 deletions
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9
cps/book_formats.py
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@ -35,6 +35,7 @@ logger = logging.getLogger("book_formats")
try:
from wand.image import Image
from wand import version as ImageVersion
from wand.exceptions import PolicyError
use_generic_pdf_cover = False
except (ImportError, RuntimeError) as e:
logger.warning('cannot import Image, generating pdf covers for pdf uploads will not work: %s', e)
@ -130,12 +131,18 @@ def pdf_preview(tmp_file_path, tmp_dir):
if use_generic_pdf_cover:
return None
else:
try:
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
with Image(filename=tmp_file_path + "[0]", resolution=150) as img:
img.compression_quality = 88
img.save(filename=os.path.join(tmp_dir, cover_file_name))
return cover_file_name
except PolicyError as ex:
logger.warning('Pdf extraction forbidden by Imagemagick policy: %s', ex)
return None
except Exception as ex:
logger.warning('Cannot extract cover image, using default: %s', ex)
return None
def get_versions():
if not use_generic_pdf_cover: