62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
# Copyright 2014 OpenStack Foundation
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import eventlet
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from oslo.config import cfg
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import glance.async
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import glance.common.scripts as scripts
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from glance import i18n
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from glance.openstack.common import lockutils
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import glance.openstack.common.log as logging
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_LI = i18n._LI
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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CONF.import_opt('eventlet_executor_pool_size', 'glance.common.config',
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group='task')
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_MAX_EXECUTOR_THREADS = CONF.task.eventlet_executor_pool_size
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_THREAD_POOL = None
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class TaskExecutor(glance.async.TaskExecutor):
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def __init__(self, context, task_repo, image_repo, image_factory):
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super(TaskExecutor, self).__init__(context, task_repo, image_repo,
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image_factory)
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if _THREAD_POOL is None:
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self._set_gobal_threadpool_if_none()
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@lockutils.synchronized("tasks_eventlet_pool")
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def _set_gobal_threadpool_if_none(self):
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global _THREAD_POOL
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if _THREAD_POOL is None:
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_THREAD_POOL = eventlet.GreenPool(size=_MAX_EXECUTOR_THREADS)
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def _run(self, task_id, task_type):
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LOG.info(_LI('Eventlet executor picked up the execution of task ID '
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'%(task_id)s of task type '
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'%(task_type)s') % {'task_id': task_id,
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'task_type': task_type})
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_THREAD_POOL.spawn_n(scripts.run_task,
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task_id,
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task_type,
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self.context,
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self.task_repo,
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self.image_repo,
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self.image_factory)
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