167 lines
5.0 KiB
Python
Executable File
167 lines
5.0 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright 2016 Canonical 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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import os
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import subprocess
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import sys
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import traceback
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_path = os.path.dirname(os.path.realpath(__file__))
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_hooks = os.path.abspath(os.path.join(_path, '../hooks'))
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_root = os.path.abspath(os.path.join(_path, '..'))
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def _add_path(path):
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if path not in sys.path:
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sys.path.insert(1, path)
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_add_path(_hooks)
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_add_path(_root)
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from charmhelpers.contrib.openstack.utils import (
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CompareOpenStackReleases,
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os_release,
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)
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from charmhelpers.core.hookenv import (
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action_fail,
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action_get,
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action_set,
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log,
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)
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DEFAULT_SERVICES = (
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"cinder",
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"cinder@cinder-ceph",
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)
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class CinderService():
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def __init__(self, binary, host,
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zone, status, state):
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self.binary = binary
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self.host = host
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self.zone = zone
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self.status = status
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self.active = (state != 'XXX')
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def cinder_manage_remove(binary, hostname):
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"""Call cinder-manage service remove <binary> <hostname>
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:param binary: The binary (executable) for the service to remove
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:type binary: str
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:param hostname: The host name associated with the binary
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:type hostname: str
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:returns: 0 if the cinder-manage service command succeeds
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:rtype: int
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:raises: subprocess.CalledProcessError if the call fails
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"""
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return (subprocess
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.check_call(["cinder-manage",
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"service",
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"remove",
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binary,
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hostname]))
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def cinder_manage_volume_update_host(currenthost, newhost):
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"""Call cinder-manage volume update_host --currenthost <current-host> \\
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--newhost <newhost>
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:param currenthost: the hostname to update to newhost
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:type currenthost: str
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:param newhost: the new name to update the host to
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:type newhost: str
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:returns: 0 if the cinder-manage volume command succeeds
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:rtype: int
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:raises: subprocess.CalledProcessError if the call fails
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"""
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return (subprocess
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.check_call(["cinder-manage",
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"volume",
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"update_host",
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"--currenthost", currenthost,
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"--newhost", newhost]))
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def cinder_manage_service_list():
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service_list = []
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services = subprocess.check_output(
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["cinder-manage", "service", "list"]).decode('UTF-8')
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for service in services.splitlines():
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if not service.startswith('cinder'):
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continue
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service_list.append(CinderService(*service.split()[:5]))
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return service_list
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def remove_services(args):
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host = action_get(key="host")
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services = cinder_manage_service_list()
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if host not in ("unused", "",):
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services = [s for s in services if s.host == host]
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else:
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services = [s for s in services if s.host not in DEFAULT_SERVICES]
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removed_services = []
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for service in services:
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log("Removing binary:{}, hostname:{}"
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.format(service.binary, service.host))
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try:
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if CompareOpenStackReleases(os_release("cinder")) >= "liberty":
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cinder_manage_remove(service.binary, service.host)
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else:
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action_fail("Cannot remove service: {}".format(service.host))
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except:
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action_set({'traceback': traceback.format_exc()})
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action_fail("Cannot remove service: {}".format(service.host))
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else:
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removed_services.append(service.host)
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action_set({'removed': ",".join(removed_services)})
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def _rename_volume_host(currenthost, newhost):
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services = cinder_manage_service_list()
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services = [s for s in services if s.host == currenthost]
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if services:
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try:
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cinder_manage_volume_update_host(currenthost, newhost)
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except:
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action_set({'traceback': traceback.format_exc()})
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action_fail("Cannot update host {}".format(currenthost))
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else:
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action_fail("Cannot update host attribute from {}, {} not found"
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.format(currenthost, currenthost))
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def rename_volume_host(args):
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action_args = action_get()
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_rename_volume_host(action_args['currenthost'], action_args['newhost'])
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def volume_host_add_driver(args):
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action_args = action_get()
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newhost = "{}@{}".format(action_args['currenthost'], action_args['driver'])
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if action_args.get('volume-backend-name'):
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newhost = newhost + '#' + action_args['volume-backend-name']
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_rename_volume_host(action_args['currenthost'], newhost)
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