6b16c8731c
This prepares for having the conductor query the scheduler for a list of hosts to build an instance on. In order to accomplish this the API sends a build_instances message to conductor, or spawns a greenthread in local mode, rather than sending a message to the scheduler. This is being done so that conductor can handle the orchestration of long running tasks like spawning instances. By making this move, the API is free to return to the caller while conductor queries the scheduler for a host to provision to. In the case of cells the build_instances message first goes to the cells scheduler in order to pick a cell to send it to, and then it is sent to the conductor in that cell. Part of bp query-scheduler Change-Id: I4539888e78ebdbb8cef6647273b959a012280110
29 lines
979 B
Python
29 lines
979 B
Python
# Copyright (c) 2013 Rackspace Hosting
|
|
#
|
|
# 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.
|
|
|
|
"""This modules stubs out functions in nova.utils."""
|
|
|
|
from nova import utils
|
|
|
|
|
|
def stub_out_utils_spawn_n(stubs):
|
|
"""Stubs out spawn_n with a blocking version.
|
|
|
|
This aids testing async processes by blocking until they're done.
|
|
"""
|
|
def no_spawn(func, *args, **kwargs):
|
|
return func(*args, **kwargs)
|
|
|
|
stubs.Set(utils, 'spawn_n', no_spawn)
|