rally-openstack/rally/plugins/__init__.py
Boris Pavlovic d3773cbfbe Optimize Rally imports to reduce start time
* Load plugins only if they are required
  This reduce a lot starting time of Rally and will
  allows us to do online bash completition

  As well it cleans up project structure a lot, e.g.
  all plugins are loaded in single place +
  we don't have strange code in cliutils

* Replace rally.ui.utils to not import mako
  and remove all code on module level

* Make Rally DB lazy inited

* Import plugins during test run

----

The best way to test changes in start up time is to
compare "time rally version" e.g.:

before this patch:
$ time rally version
0.0.5
real	0m0.397s
user	0m0.299s
sys	0m0.089s

after this patch:
0.0.5

real	0m0.281s
user	0m0.200s
sys	0m0.077s

Change-Id: Ibec2e6da66a1304730e801de307df7a1da68d51f
2015-07-06 21:55:33 -07:00

44 lines
1.2 KiB
Python

# Copyright 2015: Mirantis Inc.
# All Rights Reserved.
#
# 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 decorator
from rally.common.plugin import discover
PLUGINS_LOADED = False
def load():
global PLUGINS_LOADED
if not PLUGINS_LOADED:
discover.import_modules_from_package("rally.deployment.engines")
discover.import_modules_from_package("rally.deployment.serverprovider")
discover.import_modules_from_package("rally.plugins")
discover.load_plugins("/opt/rally/plugins/")
discover.load_plugins(os.path.expanduser("~/.rally/plugins/"))
PLUGINS_LOADED = True
@decorator.decorator
def ensure_plugins_are_loaded(f, *args, **kwargs):
load()
return f(*args, **kwargs)