273 lines
10 KiB
Python
273 lines
10 KiB
Python
# Copyright (c) 2013 Mirantis, Inc.
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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 yaml
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from keystoneclient import exceptions as ks_exceptions
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from murano.common import auth_utils
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from murano.common import config
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from murano.common import uuidutils
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from murano.db import models
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from murano.db.services import sessions
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from murano.db import session as db_session
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from murano.openstack.common import log as logging
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from murano.services import states
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LOG = logging.getLogger(__name__)
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DEFAULT_NETWORK_TYPES = {
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"nova": 'io.murano.resources.NovaNetwork',
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"neutron": 'io.murano.resources.NeutronNetwork'
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}
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class EnvironmentServices(object):
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@staticmethod
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def get_environments_by(filters):
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"""Returns list of environments
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:param filters: property filters
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:return: Returns list of environments
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"""
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unit = db_session.get_session()
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environments = unit.query(models.Environment). \
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filter_by(**filters).all()
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for env in environments:
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env['status'] = EnvironmentServices.get_status(env['id'])
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return environments
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@staticmethod
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def get_status(environment_id):
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"""Environment can have one of the following statuses:
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- deploying: there is ongoing deployment for environment
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- deleting: environment is currently being deleted
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- deploy failure: last deployment session has failed
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- delete failure: last delete session has failed
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- pending: there is at least one session with status `open` and no
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errors in previous sessions
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- ready: there are no sessions for environment
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:param environment_id: Id of environment for which we checking status.
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:return: Environment status
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"""
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# Deploying: there is at least one valid session with status deploying
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session_list = sessions.SessionServices.get_sessions(environment_id)
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has_opened = False
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for session in session_list:
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if session.state == states.SessionState.DEPLOYING:
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return states.EnvironmentStatus.DEPLOYING
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elif session.state == states.SessionState.DELETING:
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return states.EnvironmentStatus.DELETING
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elif session.state == states.SessionState.DEPLOY_FAILURE:
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return states.EnvironmentStatus.DEPLOY_FAILURE
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elif session.state == states.SessionState.DELETE_FAILURE:
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return states.EnvironmentStatus.DELETE_FAILURE
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elif session.state == states.SessionState.OPENED:
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has_opened = True
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elif session.state == states.SessionState.DEPLOYED:
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break
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if has_opened:
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return states.EnvironmentStatus.PENDING
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return states.EnvironmentStatus.READY
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@staticmethod
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def create(environment_params, context):
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# tagging environment by tenant_id for later checks
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"""Creates environment with specified params, in particular - name
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:param environment_params: Dict, e.g. {'name': 'env-name'}
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:param context: request context to get the tenant id and the token
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:return: Created Environment
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"""
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objects = {'?': {
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'id': uuidutils.generate_uuid(),
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}}
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network_driver = EnvironmentServices.get_network_driver(context)
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objects.update(environment_params)
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if not objects.get('defaultNetworks'):
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objects['defaultNetworks'] = \
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EnvironmentServices.generate_default_networks(objects['name'],
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network_driver)
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objects['?']['type'] = 'io.murano.Environment'
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environment_params['tenant_id'] = context.tenant
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data = {
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'Objects': objects,
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'Attributes': []
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}
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environment = models.Environment()
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environment.update(environment_params)
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unit = db_session.get_session()
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with unit.begin():
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unit.add(environment)
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# saving environment as Json to itself
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environment.update({'description': data})
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environment.save(unit)
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return environment
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@staticmethod
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def delete(environment_id, session_id):
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"""Deletes environment and notify orchestration engine about deletion
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:param environment_id: Environment that is going to be deleted
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:param token: OpenStack auth token
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"""
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env_description = EnvironmentServices.get_environment_description(
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environment_id, session_id, False)
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env_description['Objects'] = None
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EnvironmentServices.save_environment_description(
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session_id, env_description, False)
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@staticmethod
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def remove(environment_id):
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unit = db_session.get_session()
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environment = unit.query(models.Environment).get(environment_id)
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if environment:
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with unit.begin():
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unit.delete(environment)
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@staticmethod
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def get_environment_description(environment_id, session_id=None,
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inner=True):
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"""Returns environment description for specified environment.
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If session is specified and not in deploying state function
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returns modified environment description,
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otherwise returns actual environment desc.
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:param environment_id: Environment Id
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:param session_id: Session Id
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:param inner: return contents of environment rather than whole
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Object Model structure
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:return: Environment Description Object
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"""
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unit = db_session.get_session()
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if session_id:
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session = unit.query(models.Session).get(session_id)
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if sessions.SessionServices.validate(session):
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if session.state != states.SessionState.DEPLOYED:
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env_description = session.description
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else:
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env = unit.query(models.Environment) \
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.get(session.environment_id)
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env_description = env.description
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else:
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env = unit.query(models.Environment) \
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.get(session.environment_id)
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env_description = env.description
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else:
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env = (unit.query(models.Environment).get(environment_id))
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env_description = env.description
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if not inner:
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return env_description
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else:
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return env_description['Objects']
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@staticmethod
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def save_environment_description(session_id, environment, inner=True):
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"""Saves environment description to specified session.
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:param session_id: Session Id
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:param environment: Environment Description
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:param inner: save modifications to only content of environment
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rather than whole Object Model structure
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"""
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unit = db_session.get_session()
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session = unit.query(models.Session).get(session_id)
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if inner:
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data = session.description.copy()
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data['Objects'] = environment
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session.description = data
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else:
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session.description = environment
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session.save(unit)
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@staticmethod
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def generate_default_networks(env_name, network_driver):
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net_config = config.CONF.find_file(
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config.CONF.networking.network_config_file)
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if net_config:
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LOG.debug("Loading network configuration from file")
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with open(net_config) as f:
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data = yaml.safe_load(f)
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return EnvironmentServices._objectify(data, {
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'ENV': env_name
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})
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network_type = DEFAULT_NETWORK_TYPES[network_driver]
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LOG.debug("Setting '{0}' as environment's "
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"default network".format(network_type))
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return {
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'environment': {
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'?': {
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'id': uuidutils.generate_uuid(),
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'type': network_type
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},
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'name': env_name + '-network'
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},
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'flat': None
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}
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@staticmethod
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def deploy(session, unit, token):
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environment = unit.query(models.Environment).get(
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session.environment_id)
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if (session.description['Objects'] is None and
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'ObjectsCopy' not in session.description):
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EnvironmentServices.remove(session.environment_id)
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else:
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sessions.SessionServices.deploy(session, environment, unit, token)
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@staticmethod
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def _objectify(data, replacements):
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if isinstance(data, dict):
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if isinstance(data.get('?'), dict):
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data['?']['id'] = uuidutils.generate_uuid()
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result = {}
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for key, value in data.iteritems():
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result[key] = EnvironmentServices._objectify(
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value, replacements)
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return result
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elif isinstance(data, list):
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return [EnvironmentServices._objectify(v, replacements)
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for v in data]
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elif isinstance(data, (str, unicode)):
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for key, value in replacements.iteritems():
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data = data.replace('%' + key + '%', value)
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return data
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@staticmethod
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def get_network_driver(context):
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ks = auth_utils.get_client(context.auth_token, context.tenant)
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try:
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ks.service_catalog.url_for(service_type='network')
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except ks_exceptions.EndpointNotFound:
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LOG.debug("Will use NovaNetwork as a network driver")
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return "nova"
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else:
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LOG.debug("Will use Neutron as a network driver")
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return "neutron"
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