def load(path):
"""Loads the JSON string representation of in-toto metadata from disk.
Arguments:
path: The path to read the file from.
Raises:
IOError: The file cannot be written.
securesystemslib.exceptions.FormatError: Metadata format is invalid.
Returns:
A Metablock object whose signable attribute is either a Link or a Layout
object.
"""
with open(path, "r") as fp:
data = json.load(fp)
signatures = data.get("signatures", [])
signed_data = data.get("signed", {})
signed_type = signed_data.get("_type")
if signed_type == "link":
signed = Link.read(signed_data)
elif signed_type == "layout":
signed = Layout.read(signed_data)
else:
raise securesystemslib.exceptions.FormatError(
"Invalid Metadata format")
return Metablock(signatures=signatures, signed=signed)
def load(path):
"""
<Purpose>
Loads the JSON string representation of signed metadata from disk
and creates a Metablock object.
The `signed` attribute of the Metablock object is assigned a Link
or Layout object, depending on the `_type` field in the loaded
metadata file.
<Arguments>
path:
The path to write the file to.
<Side Effects>
Reading metadata file from disk
<Returns>
None.
"""
with open(path, "r") as fp:
data = json.load(fp)
signatures = data.get("signatures", [])
signed_data = data.get("signed", {})
signed_type = signed_data.get("_type")
if signed_type == "link":
signed = Link.read(signed_data)
elif signed_type == "layout":
signed = Layout.read(signed_data)
else:
raise securesystemslib.exceptions.FormatError(
"Invalid Metadata format")
return Metablock(signatures=signatures, signed=signed)
