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# Copyright (c) 2013 OpenStack Foundation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
service interface
"""
from cinderclient import api_versions
from cinderclient import base
class Service(base.Resource):
def __repr__(self):
return "<Service: binary=%s host=%s>" % (self.binary, self.host)
class LogLevel(base.Resource):
def __repr__(self):
return '<LogLevel: binary=%s host=%s prefix=%s level=%s>' % (
self.binary, self.host, self.prefix, self.level)
class ServiceManagerBase(base.ManagerWithFind):
resource_class = Service
def list(self, host=None, binary=None):
"""
Describes service list for host.
:param host: destination host name.
:param binary: service binary.
"""
url = "/os-services"
filters = []
if host:
filters.append("host=%s" % host)
if binary:
filters.append("binary=%s" % binary)
if filters:
url = "%s?%s" % (url, "&".join(filters))
return self._list(url, "services")
def enable(self, host, binary):
"""Enable the service specified by hostname and binary."""
body = {"host": host, "binary": binary}
result = self._update("/os-services/enable", body)
return self.resource_class(self, result, resp=result.request_ids)
def disable(self, host, binary):
"""Disable the service specified by hostname and binary."""
body = {"host": host, "binary": binary}
result = self._update("/os-services/disable", body)
return self.resource_class(self, result, resp=result.request_ids)
def disable_log_reason(self, host, binary, reason):
"""Disable the service with reason."""
body = {"host": host, "binary": binary, "disabled_reason": reason}
result = self._update("/os-services/disable-log-reason", body)
return self.resource_class(self, result, resp=result.request_ids)
def freeze_host(self, host):
"""Freeze the service specified by hostname."""
body = {"host": host}
return self._update("/os-services/freeze", body)
def thaw_host(self, host):
"""Thaw the service specified by hostname."""
body = {"host": host}
return self._update("/os-services/thaw", body)
def failover_host(self, host, backend_id):
"""Failover a replicated backend by hostname."""
body = {"host": host, "backend_id": backend_id}
return self._update("/os-services/failover_host", body)
class ServiceManager(ServiceManagerBase):
@api_versions.wraps("3.0")
def server_api_version(self):
"""Returns the API Version supported by the server.
:return: Returns response obj for a server that supports microversions.
Returns an empty list for Liberty and prior Cinder servers.
"""
try:
return self._get_with_base_url("", response_key='versions')
except LookupError:
return []
@api_versions.wraps("3.32")
def set_log_levels(self, level, binary, server, prefix):
"""Set log level for services."""
body = {'level': level, 'binary': binary, 'server': server,
'prefix': prefix}
return self._update("/os-services/set-log", body)
@api_versions.wraps("3.32")
def get_log_levels(self, binary, server, prefix):
"""Get log levels for services."""
body = {'binary': binary, 'server': server, 'prefix': prefix}
response = self._update("/os-services/get-log", body)
log_levels = []
for entry in response['log_levels']:
entry_levels = sorted(entry['levels'].items(), key=lambda x: x[0])
for prefix, level in entry_levels:
log_dict = {'binary': entry['binary'], 'host': entry['host'],
'prefix': prefix, 'level': level}
log_levels.append(LogLevel(self, log_dict, loaded=True))
return log_levels
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