def _parse_upload_info(field_storage, error_class):
"""Parse the upload info from file upload field_storage.
Args:
field_storage: cgi.FieldStorage that represents uploaded blob.
error_class: error to raise.
Returns:
A dictionary containing the parsed values. None if there was no
field_storage.
Raises:
error_class when provided a field_storage that does not contain enough
information.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(dict, name):
value = dict.get(name, None)
if value is None:
raise error_class(
'Field %s has no %s.' % (field_name, name))
return value
filename = get_value(field_storage.disposition_options, 'filename')
blob_key = field_storage.type_options.get('blob-key', None)
upload_content = _get_upload_content(field_storage)
field_storage.file.seek(0)
content_type = get_value(upload_content, 'content-type')
size = get_value(upload_content, 'content-length')
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
md5_hash_encoded = get_value(upload_content, 'content-md5')
md5_hash = base64.urlsafe_b64decode(md5_hash_encoded)
gs_object_name = upload_content.get(CLOUD_STORAGE_OBJECT_HEADER, None)
try:
size = int(size)
except (TypeError, ValueError):
raise error_class(
'%s is not a valid value for %s size.' % (size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError as err:
raise error_class(str(err))
return {'blob_key': blob_key,
'content_type': content_type,
'creation': creation,
'filename': filename,
'size': size,
'md5_hash': md5_hash,
'gs_object_name': gs_object_name,
}
def parse_blob_info(field_storage):
"""Parse a BlobInfo record from file upload field_storage.
Args:
field_storage: cgi.FieldStorage that represents uploaded blob.
Returns:
BlobInfo record as parsed from the field-storage instance.
None if there was no field_storage.
Raises:
BlobInfoParseError when provided field_storage does not contain enough
information to construct a BlobInfo object.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(dct, name):
value = dct.get(name, None)
if value is None:
raise BlobInfoParseError('Field %s has no %s.' %
(field_name, name))
return value
filename = get_value(field_storage.disposition_options, 'filename')
blob_key_str = get_value(field_storage.type_options, 'blob-key')
blob_key = BlobKey(blob_key_str)
if six.PY2:
upload_content = email.message_from_file(field_storage.file)
else:
upload_content = email.message_from_binary_file(field_storage.file)
content_type = get_value(upload_content, 'content-type')
size = get_value(upload_content, 'content-length')
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
md5_hash_encoded = get_value(upload_content, 'content-md5')
md5_hash = base64.urlsafe_b64decode(md5_hash_encoded)
try:
size = int(size)
except (TypeError, ValueError):
raise BlobInfoParseError('%s is not a valid value for %s size.' %
(size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError as err:
raise BlobInfoParseError(str(err))
return BlobInfo(
id=blob_key_str,
content_type=content_type,
creation=creation,
filename=filename,
size=size,
md5_hash=md5_hash,
)
def _parse_upload_info(field_storage, error_class):
"""Parses the upload information from the file upload `field_storage`.
Args:
field_storage: `cgi.FieldStorage` that represents the uploaded blob.
error_class: The error to raise if the information cannot be parsed.
Returns:
A dictionary that contains the parsed values. This method will return `None`
if `field_storage` was not defined.
Raises:
`error_class` when provided with a `field_storage` that does not contain
enough information.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(dict, name):
"""Gets the name of the field."""
value = dict.get(name, None)
if value is None:
raise error_class(
'Field %s has no %s.' % (field_name, name))
return value
filename = get_value(field_storage.disposition_options, 'filename')
blob_key = field_storage.type_options.get('blob-key', None)
upload_content = _get_upload_content(field_storage)
field_storage.file.seek(0)
content_type = get_value(upload_content, 'content-type')
size = get_value(upload_content, 'content-length')
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
md5_hash_encoded = get_value(upload_content, 'content-md5')
md5_hash = base64.urlsafe_b64decode(md5_hash_encoded)
gs_object_name = upload_content.get(CLOUD_STORAGE_OBJECT_HEADER, None)
try:
size = int(size)
except (TypeError, ValueError):
raise error_class(
'%s is not a valid value for %s size.' % (size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError, err:
raise error_class(str(err))
def _parse_upload_info(field_storage, error_class):
"""Parse the upload info from file upload field_storage.
Args:
field_storage: cgi.FieldStorage that represents uploaded blob.
error_class: error to raise.
Returns:
A dictionary containing the parsed values. None if there was no
field_storage.
Raises:
error_class when provided a field_storage that does not contain enough
information.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(dict, name):
value = dict.get(name, None)
if value is None:
raise error_class(
'Field %s has no %s.' % (field_name, name))
return value
filename = get_value(field_storage.disposition_options, 'filename')
blob_key = field_storage.type_options.get('blob-key', None)
upload_content = email.message_from_file(field_storage.file)
field_storage.file.seek(0)
content_type = get_value(upload_content, 'content-type')
size = get_value(upload_content, 'content-length')
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
#md5_hash_encoded = get_value(upload_content, 'content-md5')
#md5_hash = base64.urlsafe_b64decode(md5_hash_encoded)
gs_object_name = upload_content.get(CLOUD_STORAGE_OBJECT_HEADER, None)
try:
size = int(size)
except (TypeError, ValueError):
raise error_class(
'%s is not a valid value for %s size.' % (size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError, err:
raise error_class(str(err))
def _parse_upload_info(field_storage, error_class):
"""Parses the upload information from the file upload `field_storage`.
Args:
field_storage: `cgi.FieldStorage` that represents the uploaded blob.
error_class: The error to raise if the information cannot be parsed.
Returns:
A dictionary that contains the parsed values. This method will return `None`
if `field_storage` was not defined.
Raises:
`error_class` when provided with a `field_storage` that does not contain
enough information.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(dict, name):
"""Gets the name of the field."""
value = dict.get(name, None)
if value is None:
raise error_class('Field %s has no %s.' % (field_name, name))
return value
filename = get_value(field_storage.disposition_options, 'filename')
blob_key = field_storage.type_options.get('blob-key', None)
upload_content = _get_upload_content(field_storage)
field_storage.file.seek(0)
content_type = get_value(upload_content, 'content-type')
size = get_value(upload_content, 'content-length')
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
md5_hash_encoded = get_value(upload_content, 'content-md5')
md5_hash = base64.urlsafe_b64decode(md5_hash_encoded)
gs_object_name = upload_content.get(CLOUD_STORAGE_OBJECT_HEADER, None)
try:
size = int(size)
except (TypeError, ValueError):
raise error_class('%s is not a valid value for %s size.' %
(size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError, err:
raise error_class(str(err))
def parse_blob_info(field_storage):
"""Parse a BlobInfo record from file upload field_storage.
Args:
field_storage: cgi.FieldStorage that represents uploaded blob.
Returns:
BlobInfo record as parsed from the field-storage instance.
None if there was no field_storage.
Raises:
BlobInfoParseError when provided field_storage does not contain enough
information to construct a BlobInfo object.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(diction, name):
""" Gets the value from a dictionary given a name and raises an exception
if it does not exist. """
value = diction.get(name, None)
if value is None:
raise BlobInfoParseError(
'Field %s has no %s.' % (field_name, name))
return value
filename = get_value(field_storage.disposition_options, 'filename')
blob_key = BlobKey(get_value(field_storage.type_options, 'blob-key'))
upload_content = email.message_from_file(field_storage.file)
content_type = get_value(upload_content, 'content-type')
size = get_value(upload_content, 'content-length')
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
#md5_hash_encoded = '0' # get_value(upload_content, 'content-md5')
#md5_hash = base64.urlsafe_b64decode(md5_hash_encoded)
try:
size = int(size)
except (TypeError, ValueError):
raise BlobInfoParseError(
'%s is not a valid value for %s size.' % (size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError, err:
raise BlobInfoParseError(str(err))
def parse_blob_info(field_storage):
"""Parse a BlobInfo record from file upload field_storage.
Args:
field_storage: cgi.FieldStorage that represents uploaded blob.
Returns:
BlobInfo record as parsed from the field-storage instance.
None if there was no field_storage.
Raises:
BlobInfoParseError when provided field_storage does not contain enough
information to construct a BlobInfo object.
"""
if field_storage is None:
return None
field_name = field_storage.name
def get_value(dict, name):
value = dict.get(name, None)
if value is None:
raise BlobInfoParseError("Field %s has no %s." % (field_name, name))
return value
filename = get_value(field_storage.disposition_options, "filename")
blob_key = BlobKey(get_value(field_storage.type_options, "blob-key"))
upload_content = email.message_from_file(field_storage.file)
content_type = get_value(upload_content, "content-type")
size = get_value(upload_content, "content-length")
creation_string = get_value(upload_content, UPLOAD_INFO_CREATION_HEADER)
try:
size = int(size)
except (TypeError, ValueError):
raise BlobInfoParseError("%s is not a valid value for %s size." % (size, field_name))
try:
creation = blobstore._parse_creation(creation_string, field_name)
except blobstore._CreationFormatError, err:
raise BlobInfoParseError(str(err))