Remove Xen support

This change removes the Xen support which was deprecared during
the previous cycle[1].

[1] fd0a561bea956f1b62f6ca5a27e762cb76ad9a90

Change-Id: If1675468095cbc1b9c065edb6b086e7f4afa2f3e

4 files changed, 3 insertions, 199 deletions

diff --git a/ceilometer/compute/virt/inspector.py b/ceilometer/compute/virt/inspector.py
index dbbc7281..921bc944 100644
--- a/ceilometer/compute/virt/inspector.py
+++ b/ceilometer/compute/virt/inspector.py
@@ -27,8 +27,7 @@ OPTS = [
     cfg.StrOpt('hypervisor_inspector',
                default='libvirt',
                help='Inspector to use for inspecting the hypervisor layer. '
-                    'Known inspectors are libvirt, hyperv, vsphere '
-                    'and xenapi. Note that xenapi has been deprecated.'),
+                    'Known inspectors are libvirt, hyperv, and vsphere.'),
 ]
 
 
@@ -270,9 +269,6 @@ class Inspector(object):
 
 
 def get_hypervisor_inspector(conf):
-    if conf.hypervisor_inspector == 'xenapi':
-        LOG.warning('Support for XenServer/Xen Cloud Platform has been '
-                    'deprecated and will be removed in a future release')
     try:
         namespace = 'ceilometer.compute.virt'
         mgr = driver.DriverManager(namespace,
diff --git a/ceilometer/compute/virt/libvirt/utils.py b/ceilometer/compute/virt/libvirt/utils.py
index 79684ea3..e3aa4b6a 100644
--- a/ceilometer/compute/virt/libvirt/utils.py
+++ b/ceilometer/compute/virt/libvirt/utils.py
@@ -30,7 +30,7 @@ LOG = logging.getLogger(__name__)
 OPTS = [
     cfg.StrOpt('libvirt_type',
                default='kvm',
-               choices=['kvm', 'lxc', 'qemu', 'uml', 'xen'],
+               choices=['kvm', 'lxc', 'qemu', 'uml'],
                help='Libvirt domain type.'),
     cfg.StrOpt('libvirt_uri',
                default='',
@@ -38,7 +38,7 @@ OPTS = [
                     '(which is dependent on libvirt_type).'),
 ]
 
-LIBVIRT_PER_TYPE_URIS = dict(uml='uml:///system', xen='xen:///', lxc='lxc:///')
+LIBVIRT_PER_TYPE_URIS = dict(uml='uml:///system', lxc='lxc:///')
 
 
 # We don't use the libvirt constants in case of libvirt is not available
diff --git a/ceilometer/compute/virt/xenapi/__init__.py b/ceilometer/compute/virt/xenapi/__init__.py
deleted file mode 100644
index e69de29b..00000000
--- a/ceilometer/compute/virt/xenapi/__init__.py
+++ /dev/null
diff --git a/ceilometer/compute/virt/xenapi/inspector.py b/ceilometer/compute/virt/xenapi/inspector.py
deleted file mode 100644
index bcb8bdb8..00000000
--- a/ceilometer/compute/virt/xenapi/inspector.py
+++ /dev/null
@@ -1,192 +0,0 @@
-# Copyright 2014 Intel
-#
-# 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.
-"""Implementation of Inspector abstraction for XenAPI."""
-
-from os_xenapi.client import session as xenapi_session
-from os_xenapi.client import XenAPI
-from oslo_config import cfg
-from oslo_log import log as logging
-from oslo_utils import units
-
-from ceilometer.compute.pollsters import util
-from ceilometer.compute.virt import inspector as virt_inspector
-from ceilometer.i18n import _
-
-LOG = logging.getLogger(__name__)
-
-opt_group = cfg.OptGroup(name='xenapi',
-                         title='Options for XenAPI')
-
-OPTS = [
-    cfg.StrOpt('connection_url',
-               deprecated_for_removal=True,
-               deprecated_reason='Support for XenServer/Xen Cloud Platform '
-                                 'has been deprecated',
-               help='URL for connection to XenServer/Xen Cloud Platform.'),
-    cfg.StrOpt('connection_username',
-               default='root',
-               deprecated_for_removal=True,
-               deprecated_reason='Support for XenServer/Xen Cloud Platform '
-                                 'has been deprecated',
-               help='Username for connection to XenServer/Xen Cloud '
-                    'Platform.'),
-    cfg.StrOpt('connection_password',
-               deprecated_for_removal=True,
-               deprecated_reason='Support for XenServer/Xen Cloud Platform '
-                                 'has been deprecated',
-               help='Password for connection to XenServer/Xen Cloud Platform.',
-               secret=True),
-]
-
-
-class XenapiException(virt_inspector.InspectorException):
-    pass
-
-
-def get_api_session(conf):
-    url = conf.xenapi.connection_url
-    username = conf.xenapi.connection_username
-    password = conf.xenapi.connection_password
-    if not url or password is None:
-        raise XenapiException(_('Must specify connection_url, and '
-                                'connection_password to use'))
-
-    try:
-        session = xenapi_session.XenAPISession(url, username, password,
-                                               originator="ceilometer")
-        LOG.debug("XenAPI session is created successfully, %s", session)
-    except XenAPI.Failure as e:
-        msg = _("Could not connect to XenAPI: %s") % e.details[0]
-        raise XenapiException(msg)
-    return session
-
-
-class XenapiInspector(virt_inspector.Inspector):
-
-    def __init__(self, conf):
-        super(XenapiInspector, self).__init__(conf)
-        self.session = get_api_session(self.conf)
-
-    def _lookup_by_name(self, instance_name):
-        vm_refs = self.session.VM.get_by_name_label(instance_name)
-        n = len(vm_refs)
-        if n == 0:
-            raise virt_inspector.InstanceNotFoundException(
-                _('VM %s not found in XenServer') % instance_name)
-        elif n > 1:
-            raise XenapiException(
-                _('Multiple VM %s found in XenServer') % instance_name)
-        else:
-            return vm_refs[0]
-
-    def inspect_instance(self, instance, duration):
-        instance_name = util.instance_name(instance)
-        vm_ref = self._lookup_by_name(instance_name)
-        cpu_util = self._get_cpu_usage(vm_ref, instance_name)
-        memory_usage = self._get_memory_usage(vm_ref)
-        LOG.debug("inspect_instance, cpu_util: %(cpu)s, memory_usage: %(mem)s",
-                  {'cpu': cpu_util, 'mem': memory_usage}, instance=instance)
-        return virt_inspector.InstanceStats(cpu_util=cpu_util,
-                                            memory_usage=memory_usage)
-
-    def _get_cpu_usage(self, vm_ref, instance_name):
-        vcpus_number = int(self.session.VM.get_VCPUs_max(vm_ref))
-        if vcpus_number <= 0:
-            msg = _("Could not get VM %s CPU number") % instance_name
-            raise XenapiException(msg)
-        cpu_util = 0.0
-        for index in range(vcpus_number):
-            cpu_util += float(self.session.VM.query_data_source(
-                vm_ref, "cpu%d" % index))
-        return cpu_util / int(vcpus_number) * 100
-
-    def _get_memory_usage(self, vm_ref):
-        total_mem = float(self.session.VM.query_data_source(vm_ref, "memory"))
-        try:
-            free_mem = float(self.session.VM.query_data_source(
-                vm_ref, "memory_internal_free"))
-        except XenAPI.Failure:
-            # If PV tools is not installed in the guest instance, it's
-            # impossible to get free memory. So give it a default value
-            # as 0.
-            free_mem = 0
-        # memory provided from XenServer is in Bytes;
-        # memory_internal_free provided from XenServer is in KB,
-        # converting it to MB.
-        return (total_mem - free_mem * units.Ki) / units.Mi
-
-    def inspect_vnics(self, instance, duration):
-        instance_name = util.instance_name(instance)
-        vm_ref = self._lookup_by_name(instance_name)
-        dom_id = self.session.VM.get_domid(vm_ref)
-        vif_refs = self.session.VM.get_VIFs(vm_ref)
-        bw_all = self.session.call_plugin_serialized('bandwidth',
-                                                     'fetch_all_bandwidth')
-        LOG.debug("inspect_vnics, all bandwidth: %s", bw_all,
-                  instance=instance)
-
-        for vif_ref in vif_refs:
-            vif_rec = self.session.VIF.get_record(vif_ref)
-
-            bw_vif = bw_all[dom_id][vif_rec['device']]
-
-            # TODO(jianghuaw): Currently the plugin can only support
-            # rx_bytes and tx_bytes, so temporarily set others as -1.
-            yield virt_inspector.InterfaceStats(
-                name=vif_rec['uuid'],
-                mac=vif_rec['MAC'],
-                fref=None,
-                parameters=None,
-                rx_bytes=bw_vif['bw_in'], rx_packets=-1, rx_drop=-1,
-                rx_errors=-1, tx_bytes=bw_vif['bw_out'], tx_packets=-1,
-                tx_drop=-1, tx_errors=-1, rx_bytes_delta=-1,
-                tx_bytes_delta=-1)
-
-    def inspect_vnic_rates(self, instance, duration):
-        instance_name = util.instance_name(instance)
-        vm_ref = self._lookup_by_name(instance_name)
-        vif_refs = self.session.VM.get_VIFs(vm_ref)
-        for vif_ref in vif_refs:
-            vif_rec = self.session.VIF.get_record(vif_ref)
-
-            rx_rate = float(self.session.VM.query_data_source(
-                vm_ref, "vif_%s_rx" % vif_rec['device']))
-            tx_rate = float(self.session.VM.query_data_source(
-                vm_ref, "vif_%s_tx" % vif_rec['device']))
-
-            yield virt_inspector.InterfaceRateStats(
-                name=vif_rec['uuid'],
-                mac=vif_rec['MAC'],
-                fref=None,
-                parameters=None,
-                rx_bytes_rate=rx_rate,
-                tx_bytes_rate=tx_rate)
-
-    def inspect_disk_rates(self, instance, duration):
-        instance_name = util.instance_name(instance)
-        vm_ref = self._lookup_by_name(instance_name)
-        vbd_refs = self.session.VM.get_VBDs(vm_ref)
-        for vbd_ref in vbd_refs:
-            vbd_rec = self.session.VBD.get_record(vbd_ref)
-
-            read_rate = float(self.session.VM.query_data_source(
-                vm_ref, "vbd_%s_read" % vbd_rec['device']))
-            write_rate = float(self.session.VM.query_data_source(
-                vm_ref, "vbd_%s_write" % vbd_rec['device']))
-            yield virt_inspector.DiskRateStats(
-                device=vbd_rec['device'],
-                read_bytes_rate=read_rate,
-                read_requests_rate=0,
-                write_bytes_rate=write_rate,
-                write_requests_rate=0)