70ab8aa8be
This patch adds ability to specify ips for services. That allows disabling of discovering of services at runtime. Change-Id: I6ce3a2c251b9e29fa9ba51287c9a7469aeffe7a4
123 lines
3.4 KiB
Python
123 lines
3.4 KiB
Python
# 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.
|
|
|
|
import abc
|
|
|
|
import six
|
|
|
|
from os_faults.api import base_driver
|
|
from os_faults.api.util import public
|
|
|
|
|
|
@six.add_metaclass(abc.ABCMeta)
|
|
class Service(base_driver.BaseDriver):
|
|
|
|
def __init__(self, service_name, config, node_cls, cloud_management,
|
|
hosts=None):
|
|
self.service_name = service_name
|
|
self.config = config
|
|
self.node_cls = node_cls
|
|
self.cloud_management = cloud_management
|
|
self.hosts = hosts
|
|
|
|
@abc.abstractmethod
|
|
def discover_nodes(self):
|
|
"""Discover nodes where this Service is running
|
|
|
|
:returns: NodesCollection
|
|
"""
|
|
|
|
def get_nodes(self):
|
|
"""Get nodes where this Service is running
|
|
|
|
:returns: NodesCollection
|
|
"""
|
|
if self.hosts is not None:
|
|
nodes = self.cloud_management.get_nodes()
|
|
hosts = [h for h in nodes.hosts if h.ip in self.hosts]
|
|
return self.node_cls(cloud_management=self.cloud_management,
|
|
hosts=hosts)
|
|
return self.discover_nodes()
|
|
|
|
@public
|
|
def restart(self, nodes=None):
|
|
"""Restart Service on all nodes or on particular subset
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def terminate(self, nodes=None):
|
|
"""Terminate Service gracefully on all nodes or on particular subset
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def start(self, nodes=None):
|
|
"""Start Service on all nodes or on particular subset
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def kill(self, nodes=None):
|
|
"""Terminate Service abruptly on all nodes or on particular subset
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def unplug(self, nodes=None):
|
|
"""Unplug Service out of network on all nodes or on particular subset
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def plug(self, nodes=None):
|
|
"""Plug Service into network on all nodes or on particular subset
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def freeze(self, nodes=None, sec=None):
|
|
"""Pause service execution
|
|
|
|
Send SIGSTOP to Service into network on all nodes or on particular
|
|
subset. If sec is defined - it mean Service will be stopped for
|
|
a wile.
|
|
|
|
:param nodes: NodesCollection
|
|
:param sec: int
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@public
|
|
def unfreeze(self, nodes=None):
|
|
"""Resume service execution
|
|
|
|
Send SIGCONT to Service into network on all nodes or on particular
|
|
subset.
|
|
|
|
:param nodes: NodesCollection
|
|
"""
|
|
raise NotImplementedError
|