def decode_metadata_signatures(metadata_bytes):
"""Decodes metadata signature from bytes
:param metadata_bytes: Metadata object proto
:return: deserialized Metadata blocks
:type metadata_bytes: str
"""
metadata = {}
proto_metadata = common_pb2.Metadata()
proto_metadata.ParseFromString(metadata_bytes)
metadata['value'] = proto_metadata.value
metadata['signatures'] = \
decode_metadata_value_signatures(proto_metadata.signatures)
return metadata
def decode_metadata_signatures(metadata_bytes):
"""Decodes metadata signature from bytes
Args:
metadata_bytes (str): Metadata object proto
Returns: deserialized Metadata blocks
"""
metadata = {}
proto_metadata = common_pb2.Metadata()
proto_metadata.ParseFromString(metadata_bytes)
metadata['value'] = proto_metadata.value
metadata['signatures'] = \
decode_metadata_value_signatures(proto_metadata.signatures)
return metadata
def decode_last_config_sequence_number(metadata_bytes):
"""Decodes last configuration and index for sequence number
:param metadata_bytes: encoded content for sequence number
:return: deserialized dictionary of config sequence number
:type metadata_bytes: str
"""
last_config = {'value': {'index': 0, 'signatures': []}}
if metadata_bytes:
proto_metadata = common_pb2.Metadata()
proto_metadata.ParseFromString(metadata_bytes)
proto_last_config = common_pb2.LastConfig()
proto_last_config.ParseFromString(proto_metadata.value)
last_config['value']['index'] = proto_last_config.index
last_config['signatures'] = \
decode_metadata_value_signatures(proto_metadata.signatures)
return last_config
def decode_last_config_sequence_number(metadata_bytes):
"""Decodes last configuration and index for sequence number
Args:
metadata_bytes (str): encoded content for sequence number
Returns: deserialized dictionary of config sequence number
"""
last_config = {}
last_config['value'] = {}
if metadata_bytes:
proto_metadata = common_pb2.Metadata()
proto_metadata.ParseFromString(metadata_bytes)
proto_last_config = common_pb2.LastConfig()
proto_last_config.ParseFromString(proto_metadata.value)
last_config['value']['index'] = proto_last_config.index
last_config['signatures'] = \
decode_metadata_value_signatures(proto_metadata.signatures)
return last_config
