149 lines
5.4 KiB
Python
149 lines
5.4 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
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# 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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#
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# Copyright (c) 2017 Wind River Systems, Inc.
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#
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# The right to copy, distribute, modify, or otherwise make use
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# of this software may be licensed only pursuant to the terms
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# of an applicable Wind River license agreement.
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#
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import grp
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import itertools
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import os
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import pwd
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import six.moves
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import tsconfig.tsconfig as tsc
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from oslo_concurrency import lockutils
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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 dcmanager.common import consts
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from dcmanager.common import exceptions
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from dcmanager.db import api as db_api
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from dcmanager.drivers.openstack import vim
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from dcorch.common import consts as dcorch_consts
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LOG = logging.getLogger(__name__)
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DC_MANAGER_USERNAME = "root"
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DC_MANAGER_GRPNAME = "root"
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def get_import_path(cls):
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return cls.__module__ + "." + cls.__name__
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# Returns a iterator of tuples containing batch_size number of objects in each
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def get_batch_projects(batch_size, project_list, fillvalue=None):
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args = [iter(project_list)] * batch_size
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return six.moves.zip_longest(fillvalue=fillvalue, *args)
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# to do validate the quota limits
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def validate_quota_limits(payload):
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for resource in payload:
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# Check valid resource name
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if resource not in itertools.chain(dcorch_consts.CINDER_QUOTA_FIELDS,
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dcorch_consts.NOVA_QUOTA_FIELDS,
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dcorch_consts.NEUTRON_QUOTA_FIELDS):
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raise exceptions.InvalidInputError
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# Check valid quota limit value in case for put/post
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if isinstance(payload, dict) and (not isinstance(
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payload[resource], int) or payload[resource] <= 0):
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raise exceptions.InvalidInputError
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def get_sw_update_opts(context,
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for_sw_update=False, subcloud_id=None):
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"""Get sw update options for a subcloud
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:param context: request context object.
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:param for_sw_update: return the default options if subcloud options
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are empty. Useful for retrieving sw update
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options on application of patch strategy.
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:param subcloud_id: id of subcloud.
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"""
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if subcloud_id is None:
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# Requesting defaults. Return constants if no entry in db.
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sw_update_opts_ref = db_api.sw_update_opts_default_get(context)
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if not sw_update_opts_ref:
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sw_update_opts_dict = vim.SW_UPDATE_OPTS_CONST_DEFAULT
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return sw_update_opts_dict
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else:
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# requesting subcloud options
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sw_update_opts_ref = db_api.sw_update_opts_get(context,
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subcloud_id)
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if sw_update_opts_ref:
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subcloud_name = db_api.subcloud_get(context, subcloud_id).name
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return db_api.sw_update_opts_w_name_db_model_to_dict(
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sw_update_opts_ref, subcloud_name)
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elif for_sw_update:
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sw_update_opts_ref = db_api.sw_update_opts_default_get(context)
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if not sw_update_opts_ref:
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sw_update_opts_dict = vim.SW_UPDATE_OPTS_CONST_DEFAULT
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return sw_update_opts_dict
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else:
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raise exceptions.SubcloudPatchOptsNotFound(
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subcloud_id=subcloud_id)
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return db_api.sw_update_opts_w_name_db_model_to_dict(
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sw_update_opts_ref, consts.SW_UPDATE_DEFAULT_TITLE)
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def ensure_lock_path():
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# Determine the oslo_concurrency lock path:
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# 1) First, from the oslo_concurrency section of the config
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# a) If not set via an option default or config file, oslo_concurrency
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# sets it to the OSLO_LOCK_PATH env variable
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# 2) Then if not set, set it to a specific directory under
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# tsc.VOLATILE_PATH
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if cfg.CONF.oslo_concurrency.lock_path:
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lock_path = cfg.CONF.oslo_concurrency.lock_path
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else:
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lock_path = os.path.join(tsc.VOLATILE_PATH, "dcmanager")
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if not os.path.isdir(lock_path):
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try:
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uid = pwd.getpwnam(DC_MANAGER_USERNAME).pw_uid
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gid = grp.getgrnam(DC_MANAGER_GRPNAME).gr_gid
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os.makedirs(lock_path)
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os.chown(lock_path, uid, gid)
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LOG.info("Created directory=%s" % lock_path)
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except OSError as e:
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LOG.exception("makedir %s OSError=%s encountered" %
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(lock_path, e))
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return None
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return lock_path
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def synchronized(name, external=True, fair=False):
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if external:
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prefix = 'DCManager-'
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lock_path = ensure_lock_path()
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else:
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prefix = None
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lock_path = None
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return lockutils.synchronized(name, lock_file_prefix=prefix,
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external=external, lock_path=lock_path,
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semaphores=None, delay=0.01, fair=fair)
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