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# Copyright (c) 2014 VMware, Inc.
# 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.
"""
VMware PBM service client and PBM related utility methods
PBM is used for policy based placement in VMware datastores.
Refer http://goo.gl/GR2o6U for more details.
"""
import logging
import os
import urllib
import urlparse
import suds.sax.element as element
from oslo.vmware.openstack.common.gettextutils import _LW
from oslo.vmware import service
from oslo.vmware import vim_util
SERVICE_TYPE = 'PbmServiceInstance'
LOG = logging.getLogger(__name__)
class Pbm(service.Service):
"""Service class that provides access to the Storage Policy API."""
def __init__(self, protocol='https', host='localhost', port=443,
wsdl_url=None):
"""Constructs a PBM service client object.
:param protocol: http or https
:param host: server IP address or host name
:param port: port for connection
:param wsdl_url: PBM WSDL url
"""
base_url = service.Service.build_base_url(protocol, host, port)
soap_url = base_url + '/pbm'
super(Pbm, self).__init__(wsdl_url, soap_url)
def set_soap_cookie(self, cookie):
"""Set the specified vCenter session cookie in the SOAP header
:param cookie: cookie to set
"""
elem = element.Element('vcSessionCookie').setText(cookie)
self.client.set_options(soapheaders=elem)
def retrieve_service_content(self):
ref = vim_util.get_moref(service.SERVICE_INSTANCE, SERVICE_TYPE)
return self.PbmRetrieveServiceContent(ref)
def __repr__(self):
return "PBM Object"
def __str__(self):
return "PBM Object"
def get_all_profiles(session):
"""Get all the profiles defined in VC server.
:returns: PbmProfile data objects
:raises: VimException, VimFaultException, VimAttributeException,
VimSessionOverLoadException, VimConnectionException
"""
LOG.debug("Fetching all the profiles defined in VC server.")
pbm = session.pbm
profile_manager = pbm.service_content.profileManager
res_type = pbm.client.factory.create('ns0:PbmProfileResourceType')
res_type.resourceType = 'STORAGE'
profiles = []
profile_ids = session.invoke_api(pbm,
'PbmQueryProfile',
profile_manager,
resourceType=res_type)
LOG.debug("Fetched profile IDs: %s.", profile_ids)
if profile_ids:
profiles = session.invoke_api(pbm,
'PbmRetrieveContent',
profile_manager,
profileIds=profile_ids)
return profiles
def get_profile_id_by_name(session, profile_name):
"""Get the profile UUID corresponding to the given profile name.
:param profile_name: profile name whose UUID needs to be retrieved
:returns: profile UUID string or None if profile not found
:raises: VimException, VimFaultException, VimAttributeException,
VimSessionOverLoadException, VimConnectionException
"""
LOG.debug("Retrieving profile ID for profile: %s.", profile_name)
for profile in get_all_profiles(session):
if profile.name == profile_name:
profile_id = profile.profileId
LOG.debug("Retrieved profile ID: %(id)s for profile: %(name)s.",
{'id': profile_id,
'name': profile_name})
return profile_id
return None
def filter_hubs_by_profile(session, hubs, profile_id):
"""Filter and return hubs that match the given profile.
:param hubs: PbmPlacementHub morefs
:param profile_id: profile ID
:returns: subset of hubs that match the given profile
:raises: VimException, VimFaultException, VimAttributeException,
VimSessionOverLoadException, VimConnectionException
"""
LOG.debug("Filtering hubs: %(hubs)s that match profile: %(profile)s.",
{'hubs': hubs,
'profile': profile_id})
pbm = session.pbm
placement_solver = pbm.service_content.placementSolver
filtered_hubs = session.invoke_api(pbm,
'PbmQueryMatchingHub',
placement_solver,
hubsToSearch=hubs,
profile=profile_id)
LOG.debug("Filtered hubs: %s", filtered_hubs)
return filtered_hubs
def convert_datastores_to_hubs(pbm_client_factory, datastores):
"""Convert given datastore morefs to PbmPlacementHub morefs.
:param pbm_client_factory: Factory to create PBM API input specs
:param datastores: list of datastore morefs
:returns: list of PbmPlacementHub morefs
"""
hubs = []
for ds in datastores:
hub = pbm_client_factory.create('ns0:PbmPlacementHub')
hub.hubId = ds.value
hub.hubType = 'Datastore'
hubs.append(hub)
return hubs
def filter_datastores_by_hubs(hubs, datastores):
"""Get filtered subset of datastores corresponding to the given hub list.
:param hubs: list of PbmPlacementHub morefs
:param datastores: all candidate datastores
:returns: subset of datastores corresponding to the given hub list
"""
filtered_dss = []
hub_ids = [hub.hubId for hub in hubs]
for ds in datastores:
if ds.value in hub_ids:
filtered_dss.append(ds)
return filtered_dss
def get_pbm_wsdl_location(vc_version):
"""Return PBM WSDL file location corresponding to VC version.
:param vc_version: a dot-separated version string. For example, "1.2".
:return: the pbm wsdl file location.
"""
if not vc_version:
return
ver = vc_version.split('.')
major_minor = ver[0]
if len(ver) >= 2:
major_minor = '%s.%s' % (major_minor, ver[1])
curr_dir = os.path.abspath(os.path.dirname(__file__))
pbm_service_wsdl = os.path.join(curr_dir, 'wsdl', major_minor,
'pbmService.wsdl')
if not os.path.exists(pbm_service_wsdl):
LOG.warn(_LW("PBM WSDL file %s not found."), pbm_service_wsdl)
return
pbm_wsdl = urlparse.urljoin('file:', urllib.pathname2url(pbm_service_wsdl))
LOG.debug("Using PBM WSDL location: %s.", pbm_wsdl)
return pbm_wsdl
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