content.py
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	# Copyright (C) 2022 The Software Heritage developers
	# See the AUTHORS file at the top-level directory of this distribution
	# License: GNU General Public License version 3, or any later version
	# See top-level LICENSE file for more information

	from typing import Union

	from swh.graphql.backends import archive

	from .base_node import BaseSWHNode
	from .directory_entry import DirectoryEntryNode
	from .release import BaseReleaseNode
	from .snapshot_branch import SnapshotBranchNode


	class BaseContentNode(BaseSWHNode):
	"""
	Base resolver for all the content nodes
	"""

	def _get_content_by_id(self, content_id):
	content = archive.Archive().get_content(content_id)
	return content[0] if content else None

	@property
	def checksum(self):
	# FIXME, return a Node object
	return {k: v.hex() for (k, v) in self._node.hashes().items()}

	@property
	def id(self):
	return self._node.sha1_git

	def is_type_of(self):
	# is_type_of is required only when resolving a UNION type
	# This is for ariadne to return the right type
	return "Content"


	class ContentNode(BaseContentNode):
	"""
	Node resolver for a content requested directly with its SWHID
	"""

	def _get_node_data(self):
	return self._get_content_by_id(self.kwargs.get("swhid").object_id)


	class TargetContentNode(BaseContentNode):
	"""
	Node resolver for a content requested from a
	directory entry or from a release target
	"""

	obj: Union[DirectoryEntryNode, BaseReleaseNode, SnapshotBranchNode]

	def _get_node_data(self):
	content_id = self.obj.target_hash
	return self._get_content_by_id(content_id)

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