Differential D2016 Diff 6773 swh/model/identifiers.py

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swh/model/identifiers.py

# Copyright (C) 2015-2019 The Software Heritage developers		# Copyright (C) 2015-2019 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution		# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version		# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information		# See top-level LICENSE file for more information

import binascii		import binascii
import datetime		import datetime
import hashlib		import hashlib

from collections import namedtuple
from functools import lru_cache		from functools import lru_cache
		from typing import Any, Dict, NamedTuple

from .exceptions import ValidationError		from .exceptions import ValidationError
from .fields.hashes import validate_sha1		from .fields.hashes import validate_sha1
from .hashutil import hash_git_data, hash_to_hex, MultiHash		from .hashutil import hash_git_data, hash_to_hex, MultiHash


ORIGIN = 'origin'		ORIGIN = 'origin'
SNAPSHOT = 'snapshot'		SNAPSHOT = 'snapshot'
REVISION = 'revision'		REVISION = 'revision'
RELEASE = 'release'		RELEASE = 'release'
DIRECTORY = 'directory'		DIRECTORY = 'directory'
CONTENT = 'content'		CONTENT = 'content'

PID_NAMESPACE = 'swh'		PID_NAMESPACE = 'swh'
PID_VERSION = 1		PID_VERSION = 1
PID_TYPES = ['ori', 'snp', 'rel', 'rev', 'dir', 'cnt']		PID_TYPES = ['ori', 'snp', 'rel', 'rev', 'dir', 'cnt']
PID_KEYS = ['namespace', 'scheme_version', 'object_type', 'object_id',
'metadata']
PID_SEP = ':'		PID_SEP = ':'
PID_CTXT_SEP = ';'		PID_CTXT_SEP = ';'


@lru_cache()		@lru_cache()
def identifier_to_bytes(identifier):		def identifier_to_bytes(identifier):
"""Convert a text identifier to bytes.		"""Convert a text identifier to bytes.

▲ Show 20 Lines • Show All 597 Lines • ▼ Show 20 Lines	_object_type_map = {
},		},
CONTENT: {		CONTENT: {
'short_name': 'cnt',		'short_name': 'cnt',
'key_id': 'sha1_git'		'key_id': 'sha1_git'
}		}
}		}


class PersistentId(namedtuple('PersistentId', PID_KEYS)):		_PersistentId = NamedTuple(
		'PersistentId', [
		('namespace', str),
		('scheme_version', int),
		('object_type', str),
		('object_id', str),
		('metadata', Dict[str, Any]),
		])


		class PersistentId(_PersistentId):
"""		"""
		vlorentzUnsubmitted Done Inline Actions Declare the NamedTuple in another class, and name it eg. `_PersistentId`. Or just declare attributes using the `attr` lib. vlorentz: Declare the NamedTuple in another class, and name it eg. `_PersistentId`. Or just declare…
Named tuple holding the relevant info associated to a Software Heritage		Named tuple holding the relevant info associated to a Software Heritage
persistent identifier.		persistent identifier.

Args:		Args:
namespace (str): the namespace of the identifier, defaults to 'swh'		namespace (str): the namespace of the identifier, defaults to 'swh'
scheme_version (int): the scheme version of the identifier,		scheme_version (int): the scheme version of the identifier,
defaults to 1		defaults to 1
object_type (str): the type of object the identifier points to,		object_type (str): the type of object the identifier points to,
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