91 lines
2.8 KiB
Python
91 lines
2.8 KiB
Python
# Copyright (c) 2014 Bull.
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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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"""Version 2 of the API.
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"""
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from oslo_config import cfg
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from oslo_log import log as logging
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import pecan
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from pecan import rest
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from stevedore import enabled
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from blazar import exceptions
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from blazar.i18n import _
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LOG = logging.getLogger(__name__)
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api_opts = [
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cfg.ListOpt('api_v2_controllers',
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default=['oshosts', 'leases'],
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help='API extensions to use'),
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]
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CONF = cfg.CONF
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CONF.register_opts(api_opts, 'api')
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class V2Controller(rest.RestController):
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"""Version 2 API controller root."""
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versions = [{"id": "v2.0", "status": "CURRENT"}]
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_routes = {}
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def _log_missing_plugins(self, names):
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for name in names:
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if name not in self.extension_manager.names():
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LOG.error(_("API Plugin %s was not loaded") % name)
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def __init__(self):
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extensions = []
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self.extension_manager = enabled.EnabledExtensionManager(
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check_func=lambda ext: ext.name in CONF.api.api_v2_controllers,
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namespace='blazar.api.v2.controllers.extensions',
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invoke_on_load=True
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)
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self._log_missing_plugins(CONF.api.api_v2_controllers)
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for ext in self.extension_manager.extensions:
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try:
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setattr(self, ext.obj.name, ext.obj)
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except TypeError:
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raise exceptions.BlazarException(
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_("API name must be specified for "
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"extension {0}").format(ext.name))
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self._routes.update(ext.obj.extra_routes)
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extensions.append(ext.obj.name)
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LOG.debug(_("Loaded extensions: {0}").format(extensions))
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@pecan.expose()
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def _route(self, args):
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"""Overrides the default routing behavior.
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It allows to map controller URL with correct controller instance.
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By default, it maps with the same name.
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"""
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try:
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route = self._routes.get(args[0], args[0])
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if route is None:
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# NOTE(sbauza): Route must map to a non-existing controller
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args[0] = 'http404-nonexistingcontroller'
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else:
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args[0] = route
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except IndexError:
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LOG.error(_("No args found on V2 controller"))
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return super(V2Controller, self)._route(args)
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