144 lines
5.6 KiB
Python
144 lines
5.6 KiB
Python
# Copyright 2014 Rackspace
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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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from oslo_config import cfg
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from pecan import rest
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from stevedore import driver as stevedore_driver
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from octavia.common import data_models
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from octavia.common import exceptions
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from octavia.db import repositories
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from octavia.i18n import _LE
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class BaseController(rest.RestController):
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def __init__(self):
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super(BaseController, self).__init__()
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self.repositories = repositories.Repositories()
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self.handler = stevedore_driver.DriverManager(
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namespace='octavia.api.handlers',
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name=CONF.api_handler,
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invoke_on_load=True
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).driver
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@staticmethod
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def _convert_db_to_type(db_entity, to_type, children=False):
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"""Converts a data model into an Octavia WSME type
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:param db_entity: data model to convert
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:param to_type: converts db_entity to this time
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"""
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if isinstance(to_type, list):
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to_type = to_type[0]
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def _convert(db_obj):
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return to_type.from_data_model(db_obj, children=children)
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if isinstance(db_entity, list):
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converted = [_convert(db_obj) for db_obj in db_entity]
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else:
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converted = _convert(db_entity)
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return converted
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@staticmethod
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def _get_db_obj(session, repo, data_model, id):
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"""Gets an object from the database and returns it."""
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db_obj = repo.get(session, id=id)
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if not db_obj:
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LOG.exception(_LE("{name} {id} not found").format(
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name=data_model._name(), id=id))
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raise exceptions.NotFound(
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resource=data_model._name(), id=id)
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return db_obj
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def _get_db_lb(self, session, id):
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"""Get a load balancer from the database."""
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return self._get_db_obj(session, self.repositories.load_balancer,
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data_models.LoadBalancer, id)
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def _get_db_listener(self, session, id):
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"""Get a listener from the database."""
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return self._get_db_obj(session, self.repositories.listener,
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data_models.Listener, id)
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def _get_db_pool(self, session, id):
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"""Get a pool from the database."""
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return self._get_db_obj(session, self.repositories.pool,
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data_models.Pool, id)
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def _get_db_member(self, session, id):
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"""Get a member from the database."""
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return self._get_db_obj(session, self.repositories.member,
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data_models.Member, id)
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def _get_db_l7policy(self, session, id):
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"""Get a L7 Policy from the database."""
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return self._get_db_obj(session, self.repositories.l7policy,
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data_models.L7Policy, id)
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def _get_db_l7rule(self, session, id):
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"""Get a L7 Rule from the database."""
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return self._get_db_obj(session, self.repositories.l7rule,
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data_models.L7Rule, id)
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def _get_lb_project_id(self, session, id):
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"""Get the project_id of the load balancer from the database."""
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lb = self._get_db_obj(session, self.repositories.load_balancer,
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data_models.LoadBalancer, id)
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return lb.project_id
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def _get_default_quotas(self, project_id):
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"""Gets the project's default quotas."""
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quotas = data_models.Quotas(
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project_id=project_id,
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load_balancer=CONF.quotas.default_load_balancer_quota,
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listener=CONF.quotas.default_listener_quota,
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pool=CONF.quotas.default_pool_quota,
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health_monitor=CONF.quotas.default_health_monitor_quota,
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member=CONF.quotas.default_member_quota)
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return quotas
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def _get_db_quotas(self, session, project_id):
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"""Gets the project's quotas from the database, or responds with the
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default quotas.
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"""
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# At this point project_id should not ever be None or Unset
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db_quotas = self.repositories.quotas.get(
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session, project_id=project_id)
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if not db_quotas:
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LOG.debug("No custom quotas for project %s. Returning "
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"defaults...", project_id)
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db_quotas = self._get_default_quotas(project_id=project_id)
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else:
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# Fill in any that are using the configured defaults
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if db_quotas.load_balancer is None:
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db_quotas.load_balancer = (CONF.quotas.
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default_load_balancer_quota)
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if db_quotas.listener is None:
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db_quotas.listener = CONF.quotas.default_listener_quota
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if db_quotas.pool is None:
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db_quotas.pool = CONF.quotas.default_pool_quota
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if db_quotas.health_monitor is None:
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db_quotas.health_monitor = (CONF.quotas.
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default_health_monitor_quota)
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if db_quotas.member is None:
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db_quotas.member = CONF.quotas.default_member_quota
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return db_quotas
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