def _try_response_parse(cls, proto, response, traps=None):
"""Parses the Protobuf response from the validator.
Uses "error traps" to send back any HTTP error triggered by a Protobuf
status, both those common to many handlers, and specified individually.
"""
parsed = proto()
parsed.ParseFromString(response)
traps = traps or []
try:
traps.append(error_handlers.Unknown(proto.INTERNAL_ERROR))
except AttributeError:
# Not every protobuf has every status enum, so pass AttributeErrors
pass
try:
traps.append(error_handlers.NotReady(proto.NOT_READY))
except AttributeError:
pass
try:
traps.append(error_handlers.MissingHead(proto.NO_ROOT))
except AttributeError:
pass
try:
traps.append(error_handlers.InvalidPaging(proto.INVALID_PAGING))
except AttributeError:
pass
for trap in traps:
trap.check(parsed.status)
return cls.message_to_dict(parsed)
def _try_response_parse(proto, response, traps=None):
"""
Parses a protobuf response from the validator
Raises common validator error statuses as HTTP errors
"""
parsed = proto()
parsed.ParseFromString(response)
traps = traps or []
try:
traps.append(error_handlers.Unknown(proto.INTERNAL_ERROR))
except AttributeError:
# Not every protobuf has every status enum, so pass AttributeErrors
pass
try:
traps.append(error_handlers.NotReady(proto.NOT_READY))
except AttributeError:
pass
try:
traps.append(error_handlers.MissingHead(proto.NO_ROOT))
except AttributeError:
pass
for trap in traps:
trap.check(parsed.status)
return MessageToDict(
parsed,
including_default_value_fields=True,
preserving_proto_field_name=True,
)