99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
# Copyright (c) 2013 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 oslo.config import cfg
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from stevedore import driver
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from marconi.common import access
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from marconi.common.cache import cache as oslo_cache
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from marconi.common import decorators
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from marconi.common import errors
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from marconi.openstack.common import log
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from marconi.proxy import transport # NOQA
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_bootstrap_options = [
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cfg.StrOpt('transport', default='wsgi',
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help='Transport driver to use'),
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cfg.StrOpt('storage', default='memory',
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help='Storage driver to use'),
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]
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CFG = cfg.CONF
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CFG.register_opts(_bootstrap_options, group="drivers")
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LOG = log.getLogger(__name__)
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class Bootstrap(object):
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"""Defines the Marconi proxy 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, access_mode, config_file=None, cli_args=None):
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default_file = None
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if config_file is not None:
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default_file = [config_file]
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CFG(project='marconi', args=cli_args or [],
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default_config_files=default_file)
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log.setup('marconi_proxy')
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form = 'marconi.proxy.{0}.transport'
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lookup = {access.Access.public: 'public',
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access.Access.admin: 'admin'}
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self._transport_type = form.format(lookup[access_mode])
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@decorators.lazy_property(write=False)
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def storage(self):
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LOG.debug(_(u'Loading Proxy Storage Driver'))
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try:
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mgr = driver.DriverManager('marconi.proxy.storage',
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CFG['drivers'].storage,
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invoke_on_load=True)
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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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raise errors.InvalidDriver(exc)
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@decorators.lazy_property(write=False)
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def cache(self):
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LOG.debug(_(u'Loading Proxy Cache Driver'))
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try:
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mgr = oslo_cache.get_cache(CFG)
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return mgr
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except RuntimeError as exc:
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LOG.exception(exc)
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raise errors.InvalidDriver(exc)
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@decorators.lazy_property(write=False)
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def transport(self):
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LOG.debug(_(u'Loading Proxy Transport Driver'))
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try:
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mgr = driver.DriverManager(self._transport_type,
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CFG['drivers'].transport,
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invoke_on_load=True,
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invoke_args=[self.storage,
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self.cache])
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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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raise errors.InvalidDriver(exc)
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def run(self):
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self.transport.listen()
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