def _get_core(self, ver_arn):
# コア定義バージョンのARNから、
# コア定義IDとコア定義バージョンIDを抽出する
def_id, ver_id = self._extract_version_arn(ver_arn)
# コア定義バージョンを取得する
core_ver = self.greengrass.get_core_definition_version(
CoreDefinitionId=def_id, CoreDefinitionVersionId=ver_id)
# コアは配列だが、最初の要素のみを参照する
cores = core_ver.get('Definition', {}).get('Cores', ())
if len(cores) == 0:
raise entity.NotFound('Missing core')
core = cores[0]
# コアに紐付くモノのARNから、モノの名前を抽出する
thing_name = self._extract_last_token(core.get('ThingArn', ''))
# コアに紐付くモノを取得する
thing_e = self._get_thing(thing_name)
core_e = entity.Core(
id=core.get('Id', ''),
thing=thing_e,
)
return entity.CoreDefinition(
id=def_id,
version_arn=ver_arn,
core=core_e,
)
def describe_thing(self, **kwargs):
thing = self.things.get(kwargs['thingName'])
if thing is None:
raise entity.NotFound('describe_thing')
return thing
def attach_thing_principal(self, **kwargs):
if kwargs['thingName'] not in self.things:
raise entity.NotFound('attach_thing_principal')
def get_device_definition_version(self, **kwargs):
dev_ver = self.device_versions.get(kwargs['DeviceDefinitionId'] + ':' +
kwargs['DeviceDefinitionVersionId'])
if dev_ver is None:
raise entity.NotFound('get_device_definition_version')
return dev_ver
def get_core_definition_version(self, **kwargs):
core_ver = self.core_versions.get(kwargs['CoreDefinitionId'] + ':' +
kwargs['CoreDefinitionVersionId'])
if core_ver is None:
raise entity.NotFound('get_core_definition_version')
return core_ver
def get_group_version(self, **kwargs):
group_ver = self.group_versions.get(kwargs['GroupId'] + ':' +
kwargs['GroupVersionId'])
if group_ver is None:
raise entity.NotFound('get_group_version')
return group_ver
def get_group(self, **kwargs):
group = self.groups.get(kwargs['GroupId'])
if group is None:
raise entity.NotFound('get_group')
return group
def _extract_last_token(s):
tokens = s.rsplit('/', 1)
if len(tokens) != 2:
raise entity.NotFound('No tokens found')
return tokens[1]
def _extract_version_arn(s):
tokens = s.rsplit('/', 3)
if len(tokens) != 4 or tokens[2] != 'versions':
raise entity.NotFound('Invalid ARN format')
return (tokens[1], tokens[3])