361 lines
13 KiB
Python
361 lines
13 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2013 UnitedStack Inc.
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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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#
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# Copyright (c) 2015-2016 Wind River Systems, Inc.
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#
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import jsonpatch
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import pecan
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from pecan import rest
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import wsme
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from wsme import types as wtypes
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import wsmeext.pecan as wsme_pecan
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from sysinv.api.controllers.v1 import base
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from sysinv.api.controllers.v1 import collection
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from sysinv.api.controllers.v1 import link
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from sysinv.api.controllers.v1 import types
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from sysinv.api.controllers.v1 import utils
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from sysinv.common import constants
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from sysinv.common import exception
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from sysinv.common import utils as cutils
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from sysinv import objects
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from sysinv.openstack.common.gettextutils import _
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from sysinv.openstack.common import log
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LOG = log.getLogger(__name__)
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class DRBDConfigPatchType(types.JsonPatchType):
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@staticmethod
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def mandatory_attrs():
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return []
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class DRBDConfig(base.APIBase):
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"""API representation of DRBD Configuration.
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This class enforces type checking and value constraints, and converts
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between the internal object model and the API representation of
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an drbdconfig.
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"""
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uuid = types.uuid
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"Unique UUID for this drbdconfig"
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link_util = int
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"The DRBD engineered link utilization percent during resync."
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num_parallel = int
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"The DRBD number of parallel filesystems to resync."
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rtt_ms = float
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"The DRBD replication nodes round-trip-time ms."
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action = wtypes.text
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"Represent the action on the drbdconfig."
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forisystemid = int
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"The isystemid that this drbdconfig belongs to"
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isystem_uuid = types.uuid
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"The UUID of the system this drbdconfig belongs to"
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links = [link.Link]
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"A list containing a self link and associated drbdconfig links"
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created_at = wtypes.datetime.datetime
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updated_at = wtypes.datetime.datetime
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def __init__(self, **kwargs):
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self.fields = list(objects.drbdconfig.fields.keys())
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for k in self.fields:
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setattr(self, k, kwargs.get(k))
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# 'action' is not part of objects.drbdconfig.fields
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# (it's an API-only attribute)
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self.fields.append('action')
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setattr(self, 'action', kwargs.get('action', None))
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@classmethod
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def convert_with_links(cls, rpc_drbdconfig, expand=True):
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# fields = ['uuid', 'address'] if not expand else None
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# drbd = drbdconfig.from_rpc_object(rpc_drbdconfig, fields)
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drbd = DRBDConfig(**rpc_drbdconfig.as_dict())
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if not expand:
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drbd.unset_fields_except(['uuid',
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'link_util',
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'num_parallel',
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'rtt_ms',
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'isystem_uuid',
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'created_at',
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'updated_at'])
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# never expose the isystem_id attribute
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drbd.isystem_id = wtypes.Unset
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# never expose the isystem_id attribute, allow exposure for now
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# drbd.forisystemid = wtypes.Unset
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drbd.links = [link.Link.make_link('self', pecan.request.host_url,
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'drbdconfigs',
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drbd.uuid),
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link.Link.make_link('bookmark', pecan.request.host_url,
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'drbdconfigs',
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drbd.uuid,
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bookmark=True)
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]
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return drbd
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class DRBDConfigCollection(collection.Collection):
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"""API representation of a collection of drbdconfigs."""
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drbdconfigs = [DRBDConfig]
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"A list containing drbdconfig objects"
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def __init__(self, **kwargs):
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self._type = 'drbdconfigs'
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@classmethod
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def convert_with_links(cls, rpc_drbdconfigs, limit, url=None,
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expand=False, **kwargs):
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collection = DRBDConfigCollection()
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collection.drbdconfigs = [DRBDConfig.convert_with_links(p, expand)
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for p in rpc_drbdconfigs]
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collection.next = collection.get_next(limit, url=url, **kwargs)
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return collection
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##############
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# UTILS
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##############
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def _check_drbdconfig_data(action, drbdconfig):
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if not cutils.is_int_like(drbdconfig['link_util']):
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raise wsme.exc.ClientSideError(
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_("DRBD link_util must be an integer."))
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if not cutils.is_float_like(drbdconfig['rtt_ms']):
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raise wsme.exc.ClientSideError(
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_("DRBD rtt_ms must be a float."))
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if ((int(drbdconfig['link_util']) < constants.DRBD_LINK_UTIL_MIN) or
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(int(drbdconfig['link_util']) > constants.DRBD_LINK_UTIL_MAX)):
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raise wsme.exc.ClientSideError(
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_("DRBD link_util must be within: %d to %d"
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% (constants.DRBD_LINK_UTIL_MIN, constants.DRBD_LINK_UTIL_MAX)))
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if float(drbdconfig['rtt_ms']) < constants.DRBD_RTT_MS_MIN:
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raise wsme.exc.ClientSideError(
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_("DRBD rtt_ms must be at least: %.1f ms"
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% constants.DRBD_RTT_MS_MIN))
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if float(drbdconfig['rtt_ms']) > constants.DRBD_RTT_MS_MAX:
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raise wsme.exc.ClientSideError(
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_("DRBD rtt_ms must less than: %.1f ms"
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% constants.DRBD_RTT_MS_MAX))
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return drbdconfig
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LOCK_NAME = 'drbdconfigsController'
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class drbdconfigsController(rest.RestController):
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"""REST controller for drbdconfigs."""
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_custom_actions = {
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'detail': ['GET'],
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}
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def __init__(self, from_isystems=False):
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self._from_isystems = from_isystems
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def _get_drbdconfigs_collection(self, isystem_uuid, marker, limit,
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sort_key, sort_dir, expand=False,
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resource_url=None):
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if self._from_isystems and not isystem_uuid:
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raise exception.InvalidParameterValue(
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_("System id not specified."))
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limit = utils.validate_limit(limit)
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sort_dir = utils.validate_sort_dir(sort_dir)
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marker_obj = None
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if marker:
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marker_obj = objects.drbdconfig.get_by_uuid(pecan.request.context,
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marker)
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if isystem_uuid:
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drbds = pecan.request.dbapi.drbdconfig_get_by_isystem(
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isystem_uuid, limit,
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marker_obj,
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sort_key=sort_key,
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sort_dir=sort_dir)
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else:
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drbds = pecan.request.dbapi.drbdconfig_get_list(limit,
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marker_obj,
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sort_key=sort_key,
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sort_dir=sort_dir)
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return DRBDConfigCollection.convert_with_links(drbds, limit,
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url=resource_url,
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expand=expand,
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sort_key=sort_key,
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sort_dir=sort_dir)
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@wsme_pecan.wsexpose(DRBDConfigCollection, types.uuid, types.uuid, int,
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wtypes.text, wtypes.text)
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def get_all(self, isystem_uuid=None, marker=None, limit=None,
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sort_key='id', sort_dir='asc'):
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"""Retrieve a list of drbdconfigs. Only one per system"""
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return self._get_drbdconfigs_collection(isystem_uuid, marker, limit,
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sort_key, sort_dir)
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@wsme_pecan.wsexpose(DRBDConfigCollection, types.uuid, types.uuid, int,
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wtypes.text, wtypes.text)
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def detail(self, isystem_uuid=None, marker=None, limit=None,
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sort_key='id', sort_dir='asc'):
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"""Retrieve a list of drbdconfigs with detail."""
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parent = pecan.request.path.split('/')[:-1][-1]
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if parent != "drbdconfigs":
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raise exception.HTTPNotFound
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expand = True
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resource_url = '/'.join(['drbdconfigs', 'detail'])
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return self._get_drbdconfigs_collection(isystem_uuid,
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marker, limit,
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sort_key, sort_dir,
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expand, resource_url)
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@wsme_pecan.wsexpose(DRBDConfig, types.uuid)
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def get_one(self, drbdconfig_uuid):
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"""Retrieve information about the given drbdconfig."""
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if self._from_isystems:
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raise exception.OperationNotPermitted
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rpc_drbdconfig = objects.drbdconfig.get_by_uuid(pecan.request.context,
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drbdconfig_uuid)
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return DRBDConfig.convert_with_links(rpc_drbdconfig)
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@cutils.synchronized(LOCK_NAME)
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@wsme_pecan.wsexpose(DRBDConfig, body=DRBDConfig)
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def post(self, drbdconf):
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"""Create a new drbdconfig."""
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raise exception.OperationNotPermitted
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@cutils.synchronized(LOCK_NAME)
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@wsme.validate(types.uuid, [DRBDConfigPatchType])
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@wsme_pecan.wsexpose(DRBDConfig, types.uuid,
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body=[DRBDConfigPatchType])
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def patch(self, drbdconfig_uuid, patch):
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"""Update the current drbd configuration."""
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if self._from_isystems:
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raise exception.OperationNotPermitted
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rpc_drbdconfig = objects.drbdconfig.get_by_uuid(pecan.request.context,
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drbdconfig_uuid)
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action = None
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for p in patch:
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if '/action' in p['path']:
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value = p['value']
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patch.remove(p)
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if value in (constants.APPLY_ACTION, constants.INSTALL_ACTION):
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action = value
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break
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# replace isystem_uuid and drbdconfig_uuid with corresponding
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patch_obj = jsonpatch.JsonPatch(patch)
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if action == constants.INSTALL_ACTION:
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state_rel_path = ['/uuid', '/id', '/forisystemid', '/isystem_uuid']
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else:
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# fix num_parallel to 1 during config_controller
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# as drbd sync is changed to serial
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state_rel_path = ['/uuid', '/id', '/forisystemid', '/isystem_uuid', '/num_parallel']
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if any(p['path'] in state_rel_path for p in patch_obj):
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raise wsme.exc.ClientSideError(
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_("The following fields can not be modified: %s" %
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state_rel_path))
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for p in patch_obj:
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if p['path'] == '/isystem_uuid':
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isystem = objects.system.get_by_uuid(pecan.request.context,
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p['value'])
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p['path'] = '/forisystemid'
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p['value'] = isystem.id
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try:
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drbd = DRBDConfig(**jsonpatch.apply_patch(
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rpc_drbdconfig.as_dict(),
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patch_obj))
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except utils.JSONPATCH_EXCEPTIONS as e:
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raise exception.PatchError(patch=patch, reason=e)
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odrbd = pecan.request.dbapi.drbdconfig_get_one()
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LOG.warn("SYS_I odrbdconfig: %s drbdconfig: %s, action: %s" %
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(odrbd.as_dict(), drbd.as_dict(), action))
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drbd = _check_drbdconfig_data(action, drbd.as_dict())
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if utils.is_drbd_fs_resizing():
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raise wsme.exc.ClientSideError(
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_("Cannot modify drbd config as "
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"a drbd file system resize is taking place."))
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try:
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# Update only the fields that have changed
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for field in objects.drbdconfig.fields:
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if rpc_drbdconfig[field] != drbd[field]:
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rpc_drbdconfig[field] = drbd[field]
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delta = rpc_drbdconfig.obj_what_changed()
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if delta:
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rpc_drbdconfig.save()
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if action == constants.APPLY_ACTION:
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# perform rpc to conductor to perform config apply
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pecan.request.rpcapi.update_drbd_config(
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pecan.request.context)
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else:
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LOG.info("No drbdconfig changes")
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return DRBDConfig.convert_with_links(rpc_drbdconfig)
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except exception.HTTPNotFound:
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msg = _("DRBD Config update failed: drbdconfig %s : "
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" patch %s" % (drbd, patch))
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raise wsme.exc.ClientSideError(msg)
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@cutils.synchronized(LOCK_NAME)
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@wsme_pecan.wsexpose(None, types.uuid, status_code=204)
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def delete(self, drbdconfig_uuid):
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"""Delete a drbdconfig."""
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raise exception.OperationNotPermitted
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