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Show First 20 Lines • Show All 104 Lines • ▼ Show 20 Lines	def _known_artifacts(self, last_snapshot):

Returns:		Returns:
list of (filename, sha256) tuples.		list of (filename, sha256) tuples.

"""		"""
if not last_snapshot or 'branches' not in last_snapshot:		if not last_snapshot or 'branches' not in last_snapshot:
return {}		return {}

revs = [rev['target'] for rev in last_snapshot['branches'].values()]		# retrieve only revisions (e.g the alias we do not want here)
		revs = [rev['target']
		for rev in last_snapshot['branches'].values()
		if rev['target_type'] == 'revision']
known_revisions = self.storage.revision_get(revs)		known_revisions = self.storage.revision_get(revs)
ret = {}		ret = {}
for revision in known_revisions:		for revision in known_revisions:
		if not revision: # revision_get can return None
		continue
if 'original_artifact' in revision['metadata']:		if 'original_artifact' in revision['metadata']:
artifact = revision['metadata']['original_artifact']		artifact = revision['metadata']['original_artifact']
ret[artifact['filename'], artifact['sha256']] = revision['id']		ret[artifact['filename'], artifact['sha256']] = revision['id']
return ret		return ret

def _last_snapshot(self):		def _last_snapshot(self):
"""Retrieve the last snapshot		"""Retrieve the last snapshot

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