def create_zip(archive, files):
'''Creates a zip file containing the files being backed up.'''
import zipfile
from utils.misc import add_file_hash
try:
# zipfile always follows links
with zipfile.ZipFile(archive, 'w') as zipf:
zipf.comment = 'Created by s3-backup'
for f in files:
f = f.strip()
if os.path.exists(f):
zipf.write(f)
add_file_hash(archive, f)
log.debug('Added %s.' % f)
else:
log.error('%s does not exist.' % f)
if zipf.testzip() != None:
log.error('An error occured creating the zip archive.')
except zipfile.BadZipfile:
# I assume this only happens on reads? Just in case...
log.critical('The zip file is corrupt.')
except zipfile.LargeZipFile:
log.critical('The zip file is greater than 2 GB.'
' Enable zip64 functionality.')
def create_tar(archive, files, mode, follow_links):
'''Creates a tar archive of the files being backed up.'''
import tarfile
from utils.misc import add_file_hash
try:
with tarfile.open(archive, mode, dereference=follow_links) as tar:
for f in files:
f = f.strip()
if os.path.exists(f):
tar.add(f)
add_file_hash(archive, f);
log.debug('Added %s.' % f)
else:
log.error('%s does not exist.' % f)
except tarfile.CompressionError:
log.critical('There was an error compressing the backup archive. '
'Please try again.')
sys.exit(1)
except tarfile.TarError:
log.critical('There was an error creating the backup archive. '
'Please try again.')
sys.exit(1)