128 lines
4.0 KiB
Python
128 lines
4.0 KiB
Python
# Copyright (c) 2014 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from poppy.common import decorators
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from poppy.openstack.common import log
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from oslo.config import cfg
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from stevedore import driver, extension
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LOG = log.getLogger(__name__)
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_DRIVER_OPTIONS = [
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cfg.StrOpt('transport', default='pecan',
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help='Transport driver to use'),
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cfg.StrOpt('manager', default='default',
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help='Manager driver to use'),
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cfg.StrOpt('storage', default='mockdb',
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help='Storage driver to use'),
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]
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_DRIVER_GROUP = 'drivers'
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class Bootstrap(object):
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"""Defines the CDN bootstrapper.
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The bootstrap loads up drivers per a given configuration, and
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manages their lifetimes.
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"""
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def __init__(self, conf):
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self.conf = conf
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self.conf.register_opts(_DRIVER_OPTIONS, group=_DRIVER_GROUP)
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self.driver_conf = self.conf[_DRIVER_GROUP]
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log.setup('poppy')
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LOG.debug("init bootstrap")
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@decorators.lazy_property(write=False)
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def provider(self):
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LOG.debug((u'Loading provider extension(s)'))
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# create the driver manager to load the appropriate drivers
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provider_type = 'poppy.provider'
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args = [self.conf]
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mgr = extension.ExtensionManager(namespace=provider_type,
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invoke_on_load=True,
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invoke_args=args)
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return mgr
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@decorators.lazy_property(write=False)
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def storage(self):
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LOG.debug((u'Loading storage driver'))
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# create the driver manager to load the appropriate drivers
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storage_type = 'poppy.storage'
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storage_name = self.driver_conf.storage
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args = [self.conf]
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try:
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mgr = driver.DriverManager(namespace=storage_type,
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name=storage_name,
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invoke_on_load=True,
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invoke_args=args)
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return mgr.driver
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except RuntimeError as exc:
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LOG.exception(exc)
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@decorators.lazy_property(write=False)
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def manager(self):
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LOG.debug((u'Loading manager driver'))
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# create the driver manager to load the appropriate drivers
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manager_type = 'poppy.manager'
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manager_name = self.driver_conf.manager
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args = [self.conf, self.storage, self.provider]
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try:
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mgr = driver.DriverManager(namespace=manager_type,
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name=manager_name,
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invoke_on_load=True,
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invoke_args=args)
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return mgr.driver
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except RuntimeError as exc:
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LOG.exception(exc)
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@decorators.lazy_property(write=False)
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def transport(self):
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LOG.debug("loading transport")
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# create the driver manager to load the appropriate drivers
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transport_type = 'poppy.transport'
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transport_name = self.driver_conf.transport
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args = [self.conf, self.manager]
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LOG.debug((u'Loading transport driver: %s'), transport_name)
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try:
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mgr = driver.DriverManager(namespace=transport_type,
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name=transport_name,
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invoke_on_load=True,
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invoke_args=args)
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return mgr.driver
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except RuntimeError as exc:
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LOG.exception(exc)
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def run(self):
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self.transport.listen()
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