83 lines
3.2 KiB
Python
83 lines
3.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack LLC.
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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 logging
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import traceback
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import weakref
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from eventlet import greenthread
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from reddwarf.common import service
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from reddwarf.taskmanager import models
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from reddwarf.taskmanager.models import BuiltInstanceTasks
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from reddwarf.taskmanager.models import FreshInstanceTasks
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LOG = logging.getLogger(__name__)
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class TaskManager(service.Manager):
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"""Task manager impl"""
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def __init__(self, *args, **kwargs):
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self.tasks = weakref.WeakKeyDictionary()
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super(TaskManager, self).__init__(*args, **kwargs)
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LOG.info(_("TaskManager init %s %s") % (args, kwargs))
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def periodic_tasks(self, raise_on_error=False):
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LOG.debug("No. of running tasks: %r" % len(self.tasks))
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def _wrapper(self, method, context, *args, **kwargs):
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"""Maps the respective manager method with a task counter."""
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# TODO(rnirmal): Just adding a basic counter. Will revist and
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# re-implement when we have actual tasks.
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self.tasks[greenthread.getcurrent()] = context
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try:
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func = getattr(self, method)
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func(context, *args, **kwargs)
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except Exception as e:
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LOG.error("Got an error running %s!" % method)
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LOG.error(traceback.format_exc())
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finally:
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del self.tasks[greenthread.getcurrent()]
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def resize_volume(self, context, instance_id, new_size):
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instance_tasks = models.BuiltInstanceTasks.load(context, instance_id)
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instance_tasks.resize_volume(new_size)
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def resize_flavor(self, context, instance_id, new_flavor_id,
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old_memory_size, new_memory_size):
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instance_tasks = models.BuiltInstanceTasks.load(context, instance_id)
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instance_tasks.resize_flavor(new_flavor_id, old_memory_size,
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new_memory_size)
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def restart(self, context, instance_id):
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instance_tasks = models.BuiltInstanceTasks.load(context, instance_id)
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instance_tasks.restart()
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def delete_instance(self, context, instance_id):
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instance_tasks = models.BuiltInstanceTasks.load(context, instance_id)
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instance_tasks.delete_instance()
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def create_instance(self, context, instance_id, name, flavor_id,
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flavor_ram, image_id, databases, users, service_type,
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volume_size):
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instance_tasks = FreshInstanceTasks.load(context, instance_id)
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instance_tasks.create_instance(flavor_id, flavor_ram, image_id,
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databases, users, service_type,
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volume_size)
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