95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
# Copyright 2015 Huawei Technologies Co., Ltd.
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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_config import cfg
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from oslo_log import log as logging
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from pecan import rest
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import six
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import tooz.coordination
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from wsme import types as wtypes
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import wsmeext.pecan as wsme_pecan
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from mistral.api import access_control as acl
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from mistral.api.controllers import resource
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from mistral.cmd import launch
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from mistral import context
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from mistral import coordination
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from mistral import exceptions as exc
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from mistral.utils import rest_utils
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LOG = logging.getLogger(__name__)
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class Service(resource.Resource):
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"""Service resource."""
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name = wtypes.text
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type = wtypes.text
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@classmethod
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def sample(cls):
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return cls(name='host1_1234', type='executor_group')
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class Services(resource.Resource):
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"""A collection of Services."""
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services = [Service]
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@classmethod
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def sample(cls):
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return cls(services=[Service.sample()])
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class ServicesController(rest.RestController):
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@rest_utils.wrap_wsme_controller_exception
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@wsme_pecan.wsexpose(Services)
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def get_all(self):
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"""Return all services."""
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acl.enforce('services:list', context.ctx())
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LOG.info("Fetch services.")
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if not cfg.CONF.coordination.backend_url:
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raise exc.CoordinationException("Service API is not supported.")
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service_coordinator = coordination.get_service_coordinator()
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if not service_coordinator.is_active():
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raise exc.CoordinationException(
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"Failed to connect to coordination backend."
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)
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services_list = []
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service_group = ['%s_group' % i for i in launch.LAUNCH_OPTIONS]
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try:
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for group in service_group:
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members = service_coordinator.get_members(group)
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services_list.extend(
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[Service.from_dict({'type': group, 'name': member})
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for member in members]
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)
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except tooz.coordination.ToozError as e:
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# In the scenario of network interruption or manually shutdown
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# connection shutdown, ToozError will be raised.
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raise exc.CoordinationException(
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"Failed to get service members from coordination backend. %s"
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% six.text_type(e)
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)
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return Services(services=services_list)
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