def allocate_ids_request(self, app_id, http_request_data):
""" High level function for getting unique identifiers for entities.
Args:
app_id: Name of the application.
http_request_data: Stores the protocol buffer request from the
AppServer.
Returns:
Returns an encoded response.
Raises:
NotImplementedError: when requesting a max id.
"""
global datastore_access
request = datastore_pb.AllocateIdsRequest(http_request_data)
response = datastore_pb.AllocateIdsResponse()
if READ_ONLY:
logger.warning('Unable to allocate in read-only mode: {}'.
format(request))
return (response.Encode(), datastore_pb.Error.CAPABILITY_DISABLED,
'Datastore is in read-only mode.')
max_id = int(request.max())
size = int(request.size())
start = end = 0
try:
start, end = datastore_access.allocate_ids(app_id, size, max_id=max_id)
except zktransaction.ZKBadRequest as zkie:
logger.exception('Unable to allocate IDs for {}'.format(app_id))
return (response.Encode(),
datastore_pb.Error.BAD_REQUEST,
"Illegal arguments for transaction. {0}".format(str(zkie)))
except zktransaction.ZKInternalException:
logger.exception('Unable to allocate IDs for {}'.format(app_id))
return (response.Encode(),
datastore_pb.Error.INTERNAL_ERROR,
"Internal error with ZooKeeper connection.")
except zktransaction.ZKTransactionException:
logger.exception('Unable to allocate IDs for {}'.format(app_id))
return (response.Encode(),
datastore_pb.Error.CONCURRENT_TRANSACTION,
"Concurrent transaction exception on allocate id request.")
except dbconstants.AppScaleDBConnectionError:
logger.exception('DB connection error while allocating IDs for {}'.
format(app_id))
return (response.Encode(),
datastore_pb.Error.INTERNAL_ERROR,
"Datastore connection error on allocate id request.")
response.set_start(start)
response.set_end(end)
return (response.Encode(), 0, "")
def allocate_ids_request(self, app_id, http_request_data):
""" High level function for getting unique identifiers for entities.
Args:
app_id: Name of the application.
http_request_data: Stores the protocol buffer request from the
AppServer.
Returns:
Returns an encoded response.
Raises:
NotImplementedError: when requesting a max id.
"""
request = datastore_pb.AllocateIdsRequest(http_request_data)
if request.has_max() and request.has_size():
raise gen.Return(
('', datastore_pb.Error.BAD_REQUEST,
'Both size and max cannot be set.'))
if not (request.has_max() or request.has_size()):
raise gen.Return(
('', datastore_pb.Error.BAD_REQUEST,
'Either size or max must be set.'))
if not request.has_model_key():
raise gen.Return(('', datastore_pb.Error.BAD_REQUEST,
'Model key must be set'))
namespace = six.text_type(request.model_key().name_space())
path_prefix = Path.flatten(request.model_key().path(),
allow_partial=True)[:-1]
if request.has_size():
coroutine = datastore_access.allocate_size
args = (app_id, namespace, path_prefix, request.size())
else:
coroutine = datastore_access.allocate_max
args = (app_id, namespace, path_prefix, request.max())
try:
start, end = yield coroutine(*args)
except dbconstants.AppScaleBadArg as error:
raise gen.Return(('', datastore_pb.Error.BAD_REQUEST, str(error)))
except dbconstants.AppScaleDBConnectionError as error:
raise gen.Return(('', datastore_pb.Error.INTERNAL_ERROR, str(error)))
response = datastore_pb.AllocateIdsResponse()
response.set_start(start)
response.set_end(end)
raise gen.Return((response.Encode(), 0, ''))
def allocate_ids_request(self, app_id, http_request_data):
""" High level function for getting unique identifiers for entities.
Args:
app_id: Name of the application.
http_request_data: Stores the protocol buffer request from the
AppServer.
Returns:
Returns an encoded response.
Raises:
NotImplementedError: when requesting a max id.
"""
request = datastore_pb.AllocateIdsRequest(http_request_data)
response = datastore_pb.AllocateIdsResponse()
if request.has_max() and request.has_size():
return (response.Encode(), datastore_pb.Error.BAD_REQUEST,
'Both size and max cannot be set.')
if not (request.has_max() or request.has_size()):
return (response.Encode(), datastore_pb.Error.BAD_REQUEST,
'Either size or max must be set.')
if request.has_size():
try:
start, end = datastore_access.allocate_size(
app_id, request.size())
except dbconstants.AppScaleBadArg as error:
return response.Encode(), datastore_pb.Error.BAD_REQUEST, str(
error)
except dbconstants.AppScaleDBConnectionError as error:
return response.Encode(
), datastore_pb.Error.INTERNAL_ERROR, str(error)
else:
try:
start, end = datastore_access.allocate_max(
app_id, request.max())
except dbconstants.AppScaleBadArg as error:
return response.Encode(), datastore_pb.Error.BAD_REQUEST, str(
error)
except dbconstants.AppScaleDBConnectionError as error:
return response.Encode(
), datastore_pb.Error.INTERNAL_ERROR, str(error)
response.set_start(start)
response.set_end(end)
return response.Encode(), 0, ""
def CreateAllocateIdsRequest(self, appid):
"""Create a commonly used datastore AllocateIds request."""
key = db.Key.from_path('TestEntity', 1, _app=appid)
request = datastore_pb.AllocateIdsRequest()
request.mutable_model_key().CopyFrom(key._ToPb())
return request
