314 lines
12 KiB
Python
314 lines
12 KiB
Python
# Copyright 2012 IBM Corp.
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# All Rights Reserved.
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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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from http import HTTPStatus
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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 oslo_utils import timeutils
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import webob.exc
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from cinder.api import common
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from cinder.api import extensions
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from cinder.api import microversions as mv
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from cinder.api.openstack import wsgi
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from cinder.api.schemas import services as os_services
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from cinder.api import validation
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from cinder.backup import rpcapi as backup_rpcapi
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from cinder.common import constants
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from cinder import exception
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from cinder.i18n import _
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from cinder import objects
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from cinder.policies import services as policy
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from cinder.scheduler import rpcapi as scheduler_rpcapi
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from cinder import utils
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from cinder import volume
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from cinder.volume import rpcapi as volume_rpcapi
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from cinder.volume import volume_utils
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class ServiceController(wsgi.Controller):
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def __init__(self, ext_mgr=None):
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self.ext_mgr = ext_mgr
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super(ServiceController, self).__init__()
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self.volume_api = volume.API()
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self.rpc_apis = {
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constants.SCHEDULER_BINARY: scheduler_rpcapi.SchedulerAPI(),
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constants.VOLUME_BINARY: volume_rpcapi.VolumeAPI(),
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constants.BACKUP_BINARY: backup_rpcapi.BackupAPI(),
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}
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def index(self, req):
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"""Return a list of all running services.
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Filter by host & service name.
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"""
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context = req.environ['cinder.context']
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context.authorize(policy.GET_ALL_POLICY)
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detailed = self.ext_mgr.is_loaded('os-extended-services')
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now = timeutils.utcnow(with_timezone=True)
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filters = {}
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if 'host' in req.GET:
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filters['host'] = req.GET['host']
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if 'binary' in req.GET:
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filters['binary'] = req.GET['binary']
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services = objects.ServiceList.get_all(context, filters)
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# Get backend state from scheduler
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if req.api_version_request.matches(mv.BACKEND_STATE_REPORT):
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backend_state_map = {}
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scheduler_api = self.rpc_apis[constants.SCHEDULER_BINARY]
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pools = scheduler_api.get_pools(context)
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for pool in pools:
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backend_name = volume_utils.extract_host(pool.get("name"))
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back_state = pool.get('capabilities', {}).get('backend_state',
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'up')
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backend_state_map[backend_name] = back_state
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svcs = []
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for svc in services:
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updated_at = svc.updated_at
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delta = now - (svc.updated_at or svc.created_at)
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delta_sec = delta.total_seconds()
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if svc.modified_at:
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delta_mod = now - svc.modified_at
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if abs(delta_sec) >= abs(delta_mod.total_seconds()):
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updated_at = svc.modified_at
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alive = abs(delta_sec) <= CONF.service_down_time
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art = "up" if alive else "down"
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active = 'enabled'
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if svc.disabled:
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active = 'disabled'
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if updated_at:
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updated_at = timeutils.normalize_time(updated_at)
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ret_fields = {'binary': svc.binary, 'host': svc.host,
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'zone': svc.availability_zone,
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'status': active, 'state': art,
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'updated_at': updated_at}
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if (req.api_version_request.matches(mv.BACKEND_STATE_REPORT) and
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svc.binary == constants.VOLUME_BINARY):
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ret_fields['backend_state'] = backend_state_map.get(svc.host)
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# On CLUSTER_SUPPORT we added cluster support
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if req.api_version_request.matches(mv.CLUSTER_SUPPORT):
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ret_fields['cluster'] = svc.cluster_name
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if detailed:
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ret_fields['disabled_reason'] = svc.disabled_reason
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if svc.binary == constants.VOLUME_BINARY:
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ret_fields['replication_status'] = svc.replication_status
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ret_fields['active_backend_id'] = svc.active_backend_id
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ret_fields['frozen'] = svc.frozen
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svcs.append(ret_fields)
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return {'services': svcs}
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def _volume_api_proxy(self, fun, *args):
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try:
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return fun(*args)
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except exception.ServiceNotFound as ex:
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raise exception.InvalidInput(ex.msg)
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@validation.schema(os_services.freeze_and_thaw)
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def _freeze(self, req, context, body):
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cluster_name, host = common.get_cluster_host(
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req, body, mv.REPLICATION_CLUSTER)
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return self._volume_api_proxy(self.volume_api.freeze_host, context,
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host, cluster_name)
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@validation.schema(os_services.freeze_and_thaw)
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def _thaw(self, req, context, body):
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cluster_name, host = common.get_cluster_host(
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req, body, mv.REPLICATION_CLUSTER)
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return self._volume_api_proxy(self.volume_api.thaw_host, context,
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host, cluster_name)
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@validation.schema(os_services.failover_host)
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def _failover(self, req, context, clustered, body):
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# We set version to None to always get the cluster name from the body,
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# to False when we don't want to get it, and REPLICATION_CLUSTER when
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# we only want it if the requested version is REPLICATION_CLUSTER or
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# higher.
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version = mv.REPLICATION_CLUSTER if clustered else False
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cluster_name, host = common.get_cluster_host(req, body, version)
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self._volume_api_proxy(self.volume_api.failover, context, host,
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cluster_name, body.get('backend_id'))
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return webob.Response(status_int=HTTPStatus.ACCEPTED)
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def _log_params_binaries_services(self, context, body):
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"""Get binaries and services referred by given log set/get request."""
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query_filters = {'is_up': True}
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binary = body.get('binary')
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binaries = []
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if binary in ('*', None, ''):
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binaries = constants.LOG_BINARIES
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elif binary == constants.API_BINARY:
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return [binary], []
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elif binary in constants.LOG_BINARIES:
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binaries = [binary]
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query_filters['binary'] = binary
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server = body.get('server')
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if server:
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query_filters['host_or_cluster'] = server
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services = objects.ServiceList.get_all(context, filters=query_filters)
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return binaries, services
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@validation.schema(os_services.set_log)
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def _set_log(self, req, context, body):
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"""Set log levels of services dynamically."""
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prefix = body.get('prefix')
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level = body.get('level')
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binaries, services = self._log_params_binaries_services(context, body)
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log_req = objects.LogLevel(context, prefix=prefix, level=level)
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if constants.API_BINARY in binaries:
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utils.set_log_levels(prefix, level)
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for service in services:
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self.rpc_apis[service.binary].set_log_levels(context,
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service, log_req)
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return webob.Response(status_int=HTTPStatus.ACCEPTED)
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@validation.schema(os_services.get_log)
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def _get_log(self, req, context, body):
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"""Get current log levels for services."""
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prefix = body.get('prefix')
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binaries, services = self._log_params_binaries_services(context, body)
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result = []
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log_req = objects.LogLevel(context, prefix=prefix)
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# Avoid showing constants if 'server' is set.
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server_filter = body.get('server')
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if not server_filter or server_filter == CONF.host:
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if constants.API_BINARY in binaries:
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levels = utils.get_log_levels(prefix)
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result.append({'host': CONF.host,
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'binary': constants.API_BINARY,
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'levels': levels})
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for service in services:
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levels = self.rpc_apis[service.binary].get_log_levels(context,
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service,
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log_req)
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result.append({'host': service.host,
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'binary': service.binary,
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'levels': {le.prefix: le.level for le in levels}})
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return {'log_levels': result}
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@validation.schema(os_services.disable_log_reason)
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def _disabled_log_reason(self, req, body):
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reason = body.get('disabled_reason')
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disabled = True
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status = "disabled"
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return reason, disabled, status
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@validation.schema(os_services.enable_and_disable)
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def _enable(self, req, body):
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disabled = False
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status = "enabled"
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return disabled, status
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@validation.schema(os_services.enable_and_disable)
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def _disable(self, req, body):
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disabled = True
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status = "disabled"
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return disabled, status
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def update(self, req, id, body):
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"""Enable/Disable scheduling for a service.
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Includes Freeze/Thaw which sends call down to drivers
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and allows volume.manager for the specified host to
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disable the service rather than accessing the service
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directly in this API layer.
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"""
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context = req.environ['cinder.context']
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context.authorize(policy.UPDATE_POLICY)
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support_dynamic_log = req.api_version_request.matches(mv.LOG_LEVEL)
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ext_loaded = self.ext_mgr.is_loaded('os-extended-services')
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ret_val = {}
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if id == "enable":
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disabled, status = self._enable(req, body=body)
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elif id == "disable":
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disabled, status = self._disable(req, body=body)
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elif id == "disable-log-reason" and ext_loaded:
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disabled_reason, disabled, status = (
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self._disabled_log_reason(req, body=body))
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ret_val['disabled_reason'] = disabled_reason
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elif id == "freeze":
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return self._freeze(req, context, body=body)
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elif id == "thaw":
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return self._thaw(req, context, body=body)
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elif id == "failover_host":
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return self._failover(req, context, False, body=body)
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elif (req.api_version_request.matches(mv.REPLICATION_CLUSTER) and
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id == 'failover'):
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return self._failover(req, context, True, body=body)
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elif support_dynamic_log and id == 'set-log':
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return self._set_log(req, context, body=body)
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elif support_dynamic_log and id == 'get-log':
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return self._get_log(req, context, body=body)
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else:
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raise exception.InvalidInput(reason=_("Unknown action"))
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host = common.get_cluster_host(req, body, False)[1]
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ret_val['disabled'] = disabled
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# NOTE(uni): deprecating service request key, binary takes precedence
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# Still keeping service key here for API compatibility sake.
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service = body.get('service', '')
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binary = body.get('binary', '')
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binary_key = binary or service
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# Not found exception will be handled at the wsgi level
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svc = objects.Service.get_by_args(context, host, binary_key)
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svc.disabled = ret_val['disabled']
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if 'disabled_reason' in ret_val:
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svc.disabled_reason = ret_val['disabled_reason']
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svc.save()
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ret_val.update({'host': host, 'service': service,
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'binary': binary, 'status': status})
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return ret_val
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class Services(extensions.ExtensionDescriptor):
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"""Services support."""
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name = "Services"
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alias = "os-services"
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updated = "2012-10-28T00:00:00-00:00"
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def get_resources(self):
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resources = []
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controller = ServiceController(self.ext_mgr)
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resource = extensions.ResourceExtension('os-services', controller)
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resources.append(resource)
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return resources
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