2fc9301e15
1) Added XenAPI inspector. 2) Implemented inspect_instances() to list the instances on the XenServer host. Change-Id: I1f6e33696770ec2f4e5cbb2e54e29991978aed32 Implements: blueprint xenapi-support
106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# Copyright 2014 Intel
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#
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# Author: Ren Qiaowei <qiaowei.ren@intel.com>
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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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"""Implementation of Inspector abstraction for XenAPI."""
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from eventlet import timeout
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from oslo.config import cfg
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try:
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import XenAPI as api
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except ImportError:
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api = None
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from ceilometer.compute.virt import inspector as virt_inspector
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from ceilometer.openstack.common.gettextutils import _
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opt_group = cfg.OptGroup(name='xenapi',
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title='Options for XenAPI')
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xenapi_opts = [
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cfg.StrOpt('connection_url',
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help='URL for connection to XenServer/Xen Cloud Platform'),
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cfg.StrOpt('connection_username',
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default='root',
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help='Username for connection to XenServer/Xen Cloud Platform'),
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cfg.StrOpt('connection_password',
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help='Password for connection to XenServer/Xen Cloud Platform',
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secret=True),
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cfg.IntOpt('login_timeout',
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default=10,
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help='Timeout in seconds for XenAPI login.'),
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]
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CONF = cfg.CONF
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CONF.register_group(opt_group)
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CONF.register_opts(xenapi_opts, group=opt_group)
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class XenapiException(virt_inspector.InspectorException):
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pass
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def get_api_session():
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if not api:
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raise ImportError(_('XenAPI not installed'))
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url = CONF.xenapi.connection_url
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username = CONF.xenapi.connection_username
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password = CONF.xenapi.connection_password
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if not url or password is None:
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raise XenapiException(_('Must specify connection_url, and '
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'connection_password to use'))
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exception = api.Failure(_("Unable to log in to XenAPI "
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"(is the Dom0 disk full?)"))
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try:
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session = api.Session(url)
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with timeout.Timeout(CONF.xenapi.login_timeout, exception):
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session.login_with_password(username, password)
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except api.Failure as e:
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msg = _("Could not connect to XenAPI: %s") % e.details[0]
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raise XenapiException(msg)
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return session
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class XenapiInspector(virt_inspector.Inspector):
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def __init__(self):
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super(XenapiInspector, self).__init__()
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self.session = get_api_session()
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def _get_host_ref(self):
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"""Return the xenapi host on which nova-compute runs on."""
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return self.session.xenapi.session.get_this_host(self.session.handle)
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def _call_xenapi(self, method, *args):
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return self.session.xenapi_request(method, args)
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def _list_vms(self):
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host_ref = self._get_host_ref()
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vms = self._call_xenapi("VM.get_all_records_where",
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'field "is_control_domain"="false" and '
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'field "is_a_template"="false" and '
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'field "resident_on"="%s"' % host_ref)
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for vm_ref in vms.keys():
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yield vm_ref, vms[vm_ref]
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def inspect_instances(self):
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for vm_ref, vm_rec in self._list_vms():
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name = vm_rec['name_label']
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other_config = vm_rec['other_config']
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uuid = other_config.get('nova_uuid')
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if uuid:
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yield virt_inspector.Instance(name, uuid)
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