153 lines
5.1 KiB
Python
153 lines
5.1 KiB
Python
# Copyright 2017 Catalyst IT Limited
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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 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_log import log as logging
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from pecan import rest
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import wsmeext.pecan as wsme_pecan
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from qinling.api.controllers.v1 import resources
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from qinling.api.controllers.v1 import types
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from qinling.db import api as db_api
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from qinling import exceptions as exc
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from qinling import rpc
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from qinling import status
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from qinling.utils import rest_utils
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LOG = logging.getLogger(__name__)
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UPDATE_ALLOWED = set(['name', 'description', 'image'])
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class RuntimesController(rest.RestController):
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def __init__(self, *args, **kwargs):
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self.engine_client = rpc.get_engine_client()
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super(RuntimesController, self).__init__(*args, **kwargs)
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@rest_utils.wrap_wsme_controller_exception
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@wsme_pecan.wsexpose(resources.Runtime, types.uuid)
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def get(self, id):
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LOG.info("Fetch runtime [id=%s]", id)
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runtime_db = db_api.get_runtime(id)
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return resources.Runtime.from_dict(runtime_db.to_dict())
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@rest_utils.wrap_wsme_controller_exception
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@wsme_pecan.wsexpose(resources.Runtimes)
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def get_all(self):
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LOG.info("Get all runtimes.")
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runtimes = [resources.Runtime.from_dict(db_model.to_dict())
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for db_model in db_api.get_runtimes()]
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return resources.Runtimes(runtimes=runtimes)
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@rest_utils.wrap_wsme_controller_exception
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@wsme_pecan.wsexpose(
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resources.Runtime,
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body=resources.Runtime,
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status_code=201
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)
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def post(self, runtime):
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params = runtime.to_dict()
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LOG.info("Creating runtime. [runtime=%s]", params)
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params.update({'status': status.CREATING})
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db_model = db_api.create_runtime(params)
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self.engine_client.create_runtime(db_model.id)
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return resources.Runtime.from_dict(db_model.to_dict())
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@rest_utils.wrap_wsme_controller_exception
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@wsme_pecan.wsexpose(None, types.uuid, status_code=204)
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def delete(self, id):
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"""Delete runtime."""
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LOG.info("Delete runtime [id=%s]", id)
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with db_api.transaction():
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runtime_db = db_api.get_runtime(id)
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# Runtime can not be deleted if still associate with functions.
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funcs = db_api.get_functions(runtime_id={'eq': id})
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if len(funcs):
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raise exc.NotAllowedException(
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'Runtime %s is still in use.' % id
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)
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runtime_db.status = status.DELETING
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# Clean related resources asynchronously
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self.engine_client.delete_runtime(id)
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@rest_utils.wrap_wsme_controller_exception
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@wsme_pecan.wsexpose(
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resources.Runtime,
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types.uuid,
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body=resources.Runtime
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)
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def put(self, id, runtime):
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"""Update runtime.
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Currently, we only support update name, description, image. When
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updating image, send message to engine for asynchronous handling.
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"""
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values = {}
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for key in UPDATE_ALLOWED:
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if key in runtime.to_dict():
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values.update({key: runtime.to_dict().get(key)})
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LOG.info('Update runtime [id=%s, values=%s]' % (id, values))
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with db_api.transaction():
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if 'image' in values:
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pre_runtime = db_api.get_runtime(id)
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if pre_runtime.status != status.AVAILABLE:
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raise exc.RuntimeNotAvailableException(
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'Runtime %s is not available.' % id
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)
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pre_image = pre_runtime.image
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if pre_image != values['image']:
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# Ensure there is no function running in the runtime.
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db_funcs = db_api.get_functions(
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insecure=True, fields=['id'], runtime_id=id
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)
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func_ids = [func.id for func in db_funcs]
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mappings = db_api.get_function_service_mappings(
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insecure=True, function_id={'in': func_ids}
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)
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if mappings:
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raise exc.NotAllowedException(
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'Runtime %s is still in use by functions.' % id
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)
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values['status'] = status.UPGRADING
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self.engine_client.update_runtime(
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id,
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image=values['image'],
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pre_image=pre_image
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)
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else:
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values.pop('image')
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runtime_db = db_api.update_runtime(id, values)
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return resources.Runtime.from_dict(runtime_db.to_dict())
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