deb-ceilometer/ceilometer/tests/mocks.py
Ilya Tyaptin 125d950dd4 [HBase] Improves speed of unit tests on real HBase backend
Currently, unittests at real HBase are not usually used.
Jenkins jobs and a predominant amount of developers use
HBase mock. One of the reasons for this is that unittests at real
HBase are too slow. It's due to processing of "disable_table"
and "delete_table" commands. In HBase these command take up
to 1-2 seconds. Now we create all table-set for each test that's
why at real HBase unit tests may be executed several hours.
So, at real HBase backend unit tests may be executed several hours.

My CR speeds up this case. To solve this problem it was decided
to keep all test data in one table. To provide a distinguishability
of data from different tests unique row-prefix is used for each one.

Creating and deleting required table are implements at
setup-test-env.sh.
Separating data is implemented with mock.patchs which transforms row
value in happybase.Table methods.

Change-Id: I1883d6e0619b0b2f223a4e58bdc0fc0656636e1f
Closes-bug: #1372912
2014-09-24 15:08:36 +04:00

80 lines
3.3 KiB
Python

#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os
import happybase
class MockHBaseTable(happybase.Table):
def __init__(self, name, connection, data_prefix):
# data_prefix is added to all rows which are written
# in this test. It allows to divide data from different tests
self.data_prefix = data_prefix
# We create happybase Table with prefix from
# CEILOMETER_TEST_HBASE_TABLE_PREFIX
prefix = os.getenv("CEILOMETER_TEST_HBASE_TABLE_PREFIX", 'test')
super(MockHBaseTable, self).__init__(
"%s_%s" % (prefix, name),
connection)
def put(self, row, *args, **kwargs):
row = self.data_prefix + row
return super(MockHBaseTable, self).put(row, *args,
**kwargs)
def scan(self, row_start=None, row_stop=None, row_prefix=None,
columns=None, filter=None, timestamp=None,
include_timestamp=False, batch_size=10, scan_batching=None,
limit=None, sorted_columns=False):
# Add data prefix for row parameters
# row_prefix could not be combined with row_start or row_stop
if not row_start and not row_stop:
row_prefix = self.data_prefix + (row_prefix or "")
row_start = None
row_stop = None
elif row_start and not row_stop:
# Adding data_prefix to row_start and row_stop does not work
# if it looks like row_start = %data_prefix%foo,
# row_stop = %data_prefix, because row_start > row_stop
filter = self._update_filter_row(filter)
row_start = self.data_prefix + row_start
else:
row_start = self.data_prefix + (row_start or "")
row_stop = self.data_prefix + (row_stop or "")
gen = super(MockHBaseTable, self).scan(row_start, row_stop,
row_prefix, columns,
filter, timestamp,
include_timestamp, batch_size,
scan_batching, limit,
sorted_columns)
data_prefix_len = len(self.data_prefix)
# Restore original row format
for row, data in gen:
yield (row[data_prefix_len:], data)
def row(self, row, *args, **kwargs):
row = self.data_prefix + row
return super(MockHBaseTable, self).row(row, *args, **kwargs)
def delete(self, row, *args, **kwargs):
row = self.data_prefix + row
return super(MockHBaseTable, self).delete(row, *args, **kwargs)
def _update_filter_row(self, filter):
if filter:
return "PrefixFilter(%s) AND %s" % (self.data_prefix, filter)
else:
return "PrefixFilter(%s)" % self.data_prefix