Source code for b2sdk.transfer.inbound.file_metadata
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#
# File: b2sdk/transfer/inbound/file_metadata.py
#
# Copyright 2020 Backblaze Inc. All Rights Reserved.
#
# License https://www.backblaze.com/using_b2_code.html
#
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[docs]class FileMetadata(object):
"""
Hold information about a file which is being downloaded.
"""
UNVERIFIED_CHECKSUM_PREFIX = 'unverified:'
__slots__ = (
'file_id',
'file_name',
'content_type',
'content_length',
'content_sha1',
'content_sha1_verified',
'file_info',
)
[docs] def __init__(
self,
file_id,
file_name,
content_type,
content_length,
content_sha1,
file_info,
):
self.file_id = file_id
self.file_name = file_name
self.content_type = content_type
self.content_length = content_length
self.content_sha1, self.content_sha1_verified = self._decode_content_sha1(content_sha1)
self.file_info = file_info
[docs] @classmethod
def from_response(cls, response):
info = response.headers
return cls(
file_id=info['x-bz-file-id'],
file_name=info['x-bz-file-name'],
content_type=info['content-type'],
content_length=int(info['content-length']),
content_sha1=info['x-bz-content-sha1'],
file_info=dict((k[10:], info[k]) for k in info if k.startswith('x-bz-info-')),
)
[docs] def as_info_dict(self):
return {
'fileId': self.file_id,
'fileName': self.file_name,
'contentType': self.content_type,
'contentLength': self.content_length,
'contentSha1': self._encode_content_sha1(self.content_sha1, self.content_sha1_verified),
'fileInfo': self.file_info,
}
@classmethod
def _decode_content_sha1(cls, content_sha1):
if content_sha1.startswith(cls.UNVERIFIED_CHECKSUM_PREFIX):
return content_sha1[len(cls.UNVERIFIED_CHECKSUM_PREFIX):], False
return content_sha1, True
@classmethod
def _encode_content_sha1(cls, content_sha1, content_sha1_verified):
if not content_sha1_verified:
return '%s%s' % (cls.UNVERIFIED_CHECKSUM_PREFIX, content_sha1)
return content_sha1