openstack
/
nova
Code Issues Proposed changes

plugins/xenserver: Add '.py' extension 

All Python files, except executables, should have a '.py' extension.
This wasn't being done for files in the 'plugins/xenserver' folder,
likely because it seems unnatural to call a "plugin" with a file
extension.

Begin working towards a resolution for this by renaming all files to
include a '.py' extension. To avoid forcing operators to upgrade the
Nova service and per-host plugins at the same time, continue to
reference the old, non-'.py' filenames, using symlinks to ensure the
references continue to work. Once Ocata has been released, these
symlinks can be removed, the API version updated and the reference
updated to include the '.py' extension.

Change-Id: Icf4cf2424c15276a6c01778fb92f76bbdc9b2068
Closes-bug: #1302831
This commit is contained in:
Stephen Finucane 2016-03-07 16:12:17 +00:00 committed by Stephen Finucane
parent 48a4fee10f
commit 6bb1fd776f
45 changed files with 2754 additions and 2690 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
nova/tests/unit/virt/xenapi/image/test_bittorrent.py
View File

@ -68,7 +68,7 @@ class TestBittorrentStore(stubs.XenAPITestBaseNoDB):
self.mox.StubOutWithMock(self.session, 'call_plugin_serialized')
self.session.call_plugin_serialized(
'bittorrent', 'download_vhd', **params)
'bittorrent.py', 'download_vhd', **params)
self.mox.ReplayAll()
self.store.download_image(self.context, self.session,

27
nova/tests/unit/virt/xenapi/image/test_glance.py
View File

@ -81,7 +81,7 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
lambda *a, **kw: ['uuid1'])
self.mox.StubOutWithMock(self.session, 'call_plugin_serialized')
self.session.call_plugin_serialized('glance', 'download_vhd2',
self.session.call_plugin_serialized('glance.py', 'download_vhd2',
**params)
self.mox.ReplayAll()
@ -102,22 +102,22 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
self.flags(num_retries=2, group='glance')
params.pop("endpoint")
calls = [mock.call('glance', 'download_vhd2',
calls = [mock.call('glance.py', 'download_vhd2',
endpoint='http://10.0.1.1:9292',
**params),
mock.call('glance', 'download_vhd2',
mock.call('glance.py', 'download_vhd2',
endpoint='http://10.0.0.1:9293',
**params)]
log_calls = [mock.call(mock.ANY,
{'callback_result': 'http://10.0.1.1:9292',
'attempts': 3, 'attempt': 1,
'fn': 'download_vhd2',
'plugin': 'glance'}),
'plugin': 'glance.py'}),
mock.call(mock.ANY,
{'callback_result': 'http://10.0.0.1:9293',
'attempts': 3, 'attempt': 2,
'fn': 'download_vhd2',
'plugin': 'glance'})]
'plugin': 'glance.py'})]
glance_api_servers = ['10.0.1.1:9292',
'http://10.0.0.1:9293']
@ -149,7 +149,8 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
params = self._get_upload_params(auto_disk_config, expected_os_type)
self.mox.StubOutWithMock(self.session, 'call_plugin_serialized')
self.session.call_plugin_serialized('glance', 'upload_vhd2', **params)
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params)
self.mox.ReplayAll()
self.store.upload_image(self.context, self.session, self.instance,
@ -176,7 +177,7 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
params = self._get_upload_params()
self.mox.StubOutWithMock(self.session, 'call_plugin_serialized')
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params).AndRaise(RuntimeError)
self.mox.ReplayAll()
@ -194,21 +195,21 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc')
error_details = ["", "", "RetryableError", ""]
error = self.session.XenAPI.Failure(details=error_details)
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params).AndRaise(error)
compute_utils.add_instance_fault_from_exc(self.context, self.instance,
error, (fake.Failure,
error,
mox.IgnoreArg()))
time.sleep(0.5)
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params).AndRaise(error)
compute_utils.add_instance_fault_from_exc(self.context, self.instance,
error, (fake.Failure,
error,
mox.IgnoreArg()))
time.sleep(1)
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params).AndRaise(error)
compute_utils.add_instance_fault_from_exc(self.context, self.instance,
error, (fake.Failure,
@ -231,7 +232,7 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc')
error_details = ["", "task signaled", "", ""]
error = self.session.XenAPI.Failure(details=error_details)
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params).AndRaise(error)
compute_utils.add_instance_fault_from_exc(self.context, self.instance,
error, (fake.Failure,
@ -241,14 +242,14 @@ class TestGlanceStore(stubs.XenAPITestBaseNoDB):
# Note(johngarbutt) XenServer 6.1 and later has this error
error_details = ["", "signal: SIGTERM", "", ""]
error = self.session.XenAPI.Failure(details=error_details)
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params).AndRaise(error)
compute_utils.add_instance_fault_from_exc(self.context, self.instance,
error, (fake.Failure,
error,
mox.IgnoreArg()))
time.sleep(1)
self.session.call_plugin_serialized('glance', 'upload_vhd2',
self.session.call_plugin_serialized('glance.py', 'upload_vhd2',
**params)
self.mox.ReplayAll()

2
nova/tests/unit/virt/xenapi/plugins/test_nova_plugin_version.py
View File

@ -19,7 +19,7 @@ from nova.tests.unit.virt.xenapi.plugins import plugin_test
class NovaPluginVersion(plugin_test.PluginTestBase):
def setUp(self):
super(NovaPluginVersion, self).setUp()
self.nova_plugin_version = self.load_plugin("nova_plugin_version")
self.nova_plugin_version = self.load_plugin('nova_plugin_version.py')
def test_nova_plugin_version(self):
session = 'fake_session'

10
nova/tests/unit/virt/xenapi/stubs.py
View File

@ -169,10 +169,12 @@ class FakeSessionForVMTests(fake.SessionBase):
"# Completed on Sun Nov 6 22:49:02 2011\n")
def host_call_plugin(self, _1, _2, plugin, method, _5):
plugin = plugin.rstrip('.py')
if plugin == 'glance' and method in ('download_vhd2'):
root_uuid = _make_fake_vdi()
return pickle.dumps(dict(root=dict(uuid=root_uuid)))
elif (plugin, method) == ("xenhost", "iptables_config"):
elif (plugin, method) == ('xenhost', 'iptables_config'):
return fake.as_json(out=self._fake_iptables_save_output,
err='')
else:
@ -214,11 +216,13 @@ class FakeSessionForFirewallTests(FakeSessionForVMTests):
self._test_case = test_case
def host_call_plugin(self, _1, _2, plugin, method, args):
"""Mock method four host_call_plugin to be used in unit tests
"""Mock method for host_call_plugin to be used in unit tests
for the dom0 iptables Firewall drivers for XenAPI
"""
if plugin == "xenhost" and method == "iptables_config":
plugin = plugin.rstrip('.py')
if plugin == 'xenhost' and method == 'iptables_config':
# The command to execute is a json-encoded list
cmd_args = args.get('cmd_args', None)
cmd = jsonutils.loads(cmd_args)

6
nova/tests/unit/virt/xenapi/test_agent.py
View File

@ -362,9 +362,9 @@ class CallAgentTestCase(AgentTestCaseBase):
'timeout': '300',
}
expected_args.update(addl_args)
session.VM.get_domid.assert_called_once_with("vm_ref")
session.call_plugin.assert_called_once_with("agent", "method",
session.call_plugin.assert_called_once_with("agent.py", "method",
expected_args)
session.VM.get_domid.assert_called_once_with("vm_ref")
def _call_agent_setup(self, session, mock_uuid,
returncode='0', success_codes=None,
@ -389,7 +389,7 @@ class CallAgentTestCase(AgentTestCaseBase):
'dom_id': '42',
'timeout': '30',
}
session.call_plugin.assert_called_once_with("agent", "method",
session.call_plugin.assert_called_once_with("agent.py", "method",
expected_args)
session.VM.get_domid.assert_called_once_with("vm_ref")

22
nova/tests/unit/virt/xenapi/test_vm_utils.py
View File

@ -249,7 +249,11 @@ class FetchVhdImageTestCase(VMUtilsTestBase):
self.mox.StubOutWithMock(
self.session, 'call_plugin_serialized_with_retry')
func = self.session.call_plugin_serialized_with_retry(
'glance', 'download_vhd2', 0, mox.IgnoreArg(), mox.IgnoreArg(),
'glance.py',
'download_vhd2',
0,
mox.IgnoreArg(),
mox.IgnoreArg(),
extra_headers={'X-Auth-Token': 'auth_token',
'X-Roles': '',
'X-Tenant-Id': None,
@ -268,7 +272,7 @@ class FetchVhdImageTestCase(VMUtilsTestBase):
self.mox.StubOutWithMock(
self.session, 'call_plugin_serialized')
func = self.session.call_plugin_serialized(
'bittorrent', 'download_vhd',
'bittorrent.py', 'download_vhd',
image_id='image_id',
uuid_stack=["uuid_stack"],
sr_path='sr_path',
@ -1373,14 +1377,14 @@ class CreateKernelRamdiskTestCase(VMUtilsTestBase):
args_kernel['cached-image'] = kernel_id
args_kernel['new-image-uuid'] = "fake_uuid1"
uuid.uuid4().AndReturn("fake_uuid1")
self.session.call_plugin('kernel', 'create_kernel_ramdisk',
self.session.call_plugin('kernel.py', 'create_kernel_ramdisk',
args_kernel).AndReturn("k")
args_ramdisk = {}
args_ramdisk['cached-image'] = ramdisk_id
args_ramdisk['new-image-uuid'] = "fake_uuid2"
uuid.uuid4().AndReturn("fake_uuid2")
self.session.call_plugin('kernel', 'create_kernel_ramdisk',
self.session.call_plugin('kernel.py', 'create_kernel_ramdisk',
args_ramdisk).AndReturn("r")
self.mox.ReplayAll()
@ -1396,7 +1400,7 @@ class CreateKernelRamdiskTestCase(VMUtilsTestBase):
args_kernel['cached-image'] = kernel_id
args_kernel['new-image-uuid'] = "fake_uuid1"
uuid.uuid4().AndReturn("fake_uuid1")
self.session.call_plugin('kernel', 'create_kernel_ramdisk',
self.session.call_plugin('kernel.py', 'create_kernel_ramdisk',
args_kernel).AndReturn("")
kernel = {"kernel": {"file": "k"}}
@ -1419,7 +1423,7 @@ class CreateKernelRamdiskTestCase(VMUtilsTestBase):
if cache_images == 'all':
uuid.uuid4().AndReturn("fake_uuid1")
self.session.call_plugin('kernel', 'create_kernel_ramdisk',
self.session.call_plugin('kernel.py', 'create_kernel_ramdisk',
args_kernel).AndReturn("cached_image")
else:
kernel = {"kernel": {"file": "new_image", "uuid": None}}
@ -2034,7 +2038,7 @@ class ImportMigratedDisksTestCase(VMUtilsTestBase):
expected = {'uuid': "a", 'ref': "vdi_ref"}
self.assertEqual(expected, result)
mock_get_sr_path.assert_called_once_with(session)
session.call_plugin_serialized.assert_called_once_with('migration',
session.call_plugin_serialized.assert_called_once_with('migration.py',
'move_vhds_into_sr', instance_uuid='chain_label',
sr_path='sr_path', uuid_stack=mock.ANY)
mock_scan_sr.assert_called_once_with(session)
@ -2055,8 +2059,8 @@ class ImportMigratedDisksTestCase(VMUtilsTestBase):
class MigrateVHDTestCase(VMUtilsTestBase):
def _assert_transfer_called(self, session, label):
session.call_plugin_serialized.assert_called_once_with(
'migration', 'transfer_vhd', instance_uuid=label, host="dest",
vdi_uuid="vdi_uuid", sr_path="sr_path", seq_num=2)
'migration.py', 'transfer_vhd', instance_uuid=label, host="dest",
vdi_uuid="vdi_uuid", sr_path="sr_path", seq_num=2)
def test_migrate_vhd_root(self):
session = mock.Mock()

23
nova/tests/unit/virt/xenapi/test_xenapi.py
View File

@ -769,7 +769,7 @@ class XenAPIVMTestCase(stubs.XenAPITestBase):
group='xenserver')
self.mox.StubOutWithMock(self.conn._session, 'call_plugin_serialized')
self.conn._session.call_plugin_serialized(
'ipxe', 'inject', '/sr/path', mox.IgnoreArg(),
'ipxe.py', 'inject', '/sr/path', mox.IgnoreArg(),
'http://boot.example.com', '192.168.1.100', '255.255.255.0',
'192.168.1.1', '192.168.1.3', '/root/mkisofs')
self.conn._session.call_plugin_serialized('partition_utils.py',
@ -4076,7 +4076,7 @@ class XenAPISessionTestCase(test.NoDBTestCase):
session.PLUGIN_REQUIRED_VERSION = '2.4'
self.mox.StubOutWithMock(session, 'call_plugin_serialized')
session.call_plugin_serialized('nova_plugin_version', 'get_version',
session.call_plugin_serialized('nova_plugin_version.py', 'get_version',
).AndReturn("2.4")
self.mox.ReplayAll()
@ -4089,12 +4089,23 @@ class XenAPISessionTestCase(test.NoDBTestCase):
session.PLUGIN_REQUIRED_VERSION = '2.4'
self.mox.StubOutWithMock(session, 'call_plugin_serialized')
session.call_plugin_serialized('nova_plugin_version', 'get_version',
session.call_plugin_serialized('nova_plugin_version.py', 'get_version',
).AndReturn("2.5")
self.mox.ReplayAll()
session._verify_plugin_version()
def test_verify_plugin_version_python_extensions(self):
"""Validate that 2.0 is equivalent to 1.8."""
session = self._get_mock_xapisession({})
session.XenAPI = xenapi_fake.FakeXenAPI()
session.PLUGIN_REQUIRED_VERSION = '2.0'
with mock.patch.object(session, 'call_plugin_serialized',
return_value='1.8'):
session._verify_plugin_version()
def test_verify_plugin_version_bad_maj(self):
session = self._get_mock_xapisession({})
session.XenAPI = xenapi_fake.FakeXenAPI()
@ -4102,7 +4113,7 @@ class XenAPISessionTestCase(test.NoDBTestCase):
session.PLUGIN_REQUIRED_VERSION = '2.4'
self.mox.StubOutWithMock(session, 'call_plugin_serialized')
session.call_plugin_serialized('nova_plugin_version', 'get_version',
session.call_plugin_serialized('nova_plugin_version.py', 'get_version',
).AndReturn("3.0")
self.mox.ReplayAll()
@ -4115,7 +4126,7 @@ class XenAPISessionTestCase(test.NoDBTestCase):
session.PLUGIN_REQUIRED_VERSION = '2.4'
self.mox.StubOutWithMock(session, 'call_plugin_serialized')
session.call_plugin_serialized('nova_plugin_version', 'get_version',
session.call_plugin_serialized('nova_plugin_version.py', 'get_version',
).AndReturn("2.3")
self.mox.ReplayAll()
@ -4127,7 +4138,7 @@ class XenAPISessionTestCase(test.NoDBTestCase):
# Import the plugin to extract its version
path = os.path.dirname(__file__)
rel_path_elem = "../../../../../plugins/xenserver/xenapi/etc/xapi.d/" \
"plugins/nova_plugin_version"
"plugins/nova_plugin_version.py"
for elem in rel_path_elem.split('/'):
path = os.path.join(path, elem)
path = os.path.realpath(path)

2
nova/virt/xenapi/agent.py
View File

@ -69,7 +69,7 @@ def _call_agent(session, instance, vm_ref, method, addl_args=None,
args.update(addl_args)
try:
ret = session.call_plugin('agent', method, args)
ret = session.call_plugin('agent.py', method, args)
except session.XenAPI.Failure as e:
err_msg = e.details[-1].splitlines()[-1]
if 'TIMEOUT:' in err_msg:

20
nova/virt/xenapi/client/session.py
View File

@ -73,7 +73,7 @@ class XenAPISession(object):
# changed in development environments.
# MAJOR VERSION: Incompatible changes with the plugins
# MINOR VERSION: Compatible changes, new plguins, etc
PLUGIN_REQUIRED_VERSION = '1.7'
PLUGIN_REQUIRED_VERSION = '1.8'
def __init__(self, url, user, pw):
version_string = version.version_string_with_package()
@ -107,7 +107,12 @@ class XenAPISession(object):
def _verify_plugin_version(self):
requested_version = self.PLUGIN_REQUIRED_VERSION
current_version = self.call_plugin_serialized(
'nova_plugin_version', 'get_version')
'nova_plugin_version.py', 'get_version')
# v2.0 is the same as v1.8, with no version bumps. Remove this once
# Ocata is released
if requested_version == '2.0' and current_version == '1.8':
return
if not versionutils.is_compatible(requested_version, current_version):
raise self.XenAPI.Failure(
@ -202,6 +207,17 @@ class XenAPISession(object):
# the plugin gets executed on the right host when using XS pools
args['host_uuid'] = self.host_uuid
# TODO(sfinucan): Once the required plugin version is bumped to v2.0,
# we can assume that all files will have a '.py' extension. Until then,
# handle hosts without this extension by rewriting all calls to plugins
# to exclude the '.py' extension. This is made possible through the
# temporary inclusion of symlinks to plugins.
# NOTE(sfinucan): 'partition_utils.py' was the only plugin with a '.py'
# extension before this change was enacted, hence this plugin is
# excluded
if not plugin == 'partition_utils.py':
plugin = plugin.rstrip('.py')
with self._get_session() as session:
return self._unwrap_plugin_exceptions(
session.xenapi.host.call_plugin,

7
nova/virt/xenapi/fake.py
View File

@ -779,16 +779,17 @@ class SessionBase(object):
return base64.b64encode(zlib.compress("dom_id: %s" % dom_id))
def _plugin_nova_plugin_version_get_version(self, method, args):
return pickle.dumps("1.7")
return pickle.dumps("1.8")
def _plugin_xenhost_query_gc(self, method, args):
return pickle.dumps("False")
def _plugin_partition_utils_dot_py_make_partition(self, method, args):
def _plugin_partition_utils_make_partition(self, method, args):
return pickle.dumps(None)
def host_call_plugin(self, _1, _2, plugin, method, args):
plugin = plugin.replace('.', '_dot_')
plugin = plugin.rstrip('.py')
func = getattr(self, '_plugin_%s_%s' % (plugin, method), None)
if not func:
raise Exception('No simulation in host_call_plugin for %s,%s' %

2
nova/virt/xenapi/firewall.py
View File

@ -32,7 +32,7 @@ class Dom0IptablesFirewallDriver(firewall.IptablesFirewallDriver):
args = {}
args.update(map(lambda x: (x, str(kwargs[x])), kwargs))
args['cmd_args'] = jsonutils.dumps(cmd)
ret = self._session.call_plugin('xenhost', 'iptables_config', args)
ret = self._session.call_plugin('xenhost.py', 'iptables_config', args)
json_ret = jsonutils.loads(ret)
return (json_ret['out'], json_ret['err'])

6
nova/virt/xenapi/host.py
View File

@ -188,7 +188,7 @@ class HostState(object):
" a pci device for passthrough"))
type_pci = self._session.call_plugin_serialized(
'xenhost', 'get_pci_type', slot_id[0])
'xenhost.py', 'get_pci_type', slot_id[0])
return {'label': '_'.join(['label',
vendor_id[0],
@ -203,7 +203,7 @@ class HostState(object):
# Devices are separated by a blank line. That is why we
# use "\n\n" as separator.
lspci_out = self._session.call_plugin_serialized(
'xenhost', 'get_pci_device_details')
'xenhost.py', 'get_pci_device_details')
pci_list = lspci_out.split("\n\n")
# For each device of the list, check if it uses the pciback
@ -356,7 +356,7 @@ def call_xenhost(session, method, arg_dict):
"""
# Create a task ID as something that won't match any instance ID
try:
result = session.call_plugin('xenhost', method, args=arg_dict)
result = session.call_plugin('xenhost.py', method, args=arg_dict)
if not result:
return ''
return jsonutils.loads(result)

2
nova/virt/xenapi/image/bittorrent.py
View File

@ -72,7 +72,7 @@ class BittorrentStore(object):
params['torrent_url'] = lookup_fn(image_id)
vdis = session.call_plugin_serialized(
'bittorrent', 'download_vhd', **params)
'bittorrent.py', 'download_vhd', **params)
return vdis

3
nova/virt/xenapi/image/glance.py
View File

@ -51,7 +51,8 @@ class GlanceStore(object):
cb = functools.partial(retry_cb, context, instance)
return session.call_plugin_serialized_with_retry(
'glance', fn, CONF.glance.num_retries, pick_glance, cb, **params)
'glance.py', fn, CONF.glance.num_retries, pick_glance, cb,
**params)
def _make_params(self, context, session, image_id):
return {'image_id': image_id,

2
nova/virt/xenapi/pool.py
View File

@ -169,7 +169,7 @@ class ResourcePool(object):
'master_addr': self._host_addr,
'master_user': CONF.xenserver.connection_username,
'master_pass': CONF.xenserver.connection_password, }
self._session.call_plugin('xenhost', 'host_join', args)
self._session.call_plugin('xenhost.py', 'host_join', args)
except self._session.XenAPI.Failure as e:
LOG.error(_LE("Pool-Join failed: %s"), e)
raise exception.AggregateError(aggregate_id=aggregate_id,

3
nova/virt/xenapi/vif.py
View File

@ -508,4 +508,5 @@ class XenAPIOpenVswitchDriver(XenVIFDriver):
args = {'cmd': cmd,
'args': cmd_args
}
self._session.call_plugin_serialized('xenhost', 'network_config', args)
self._session.call_plugin_serialized(
'xenhost.py', 'network_config', args)

17
nova/virt/xenapi/vm_utils.py
View File

@ -490,7 +490,7 @@ def _safe_copy_vdi(session, sr_ref, instance, vdi_to_copy_ref):
with snapshot_attached_here(
session, instance, vm_ref, label) as vdi_uuids:
imported_vhds = session.call_plugin_serialized(
'workarounds', 'safe_copy_vdis',
'workarounds.py', 'safe_copy_vdis',
sr_path=get_sr_path(session, sr_ref=sr_ref),
vdi_uuids=vdi_uuids, uuid_stack=_make_uuid_stack())
@ -1158,7 +1158,8 @@ def _create_kernel_image(context, session, instance, name_label, image_id,
args = {}
args['cached-image'] = image_id
args['new-image-uuid'] = str(uuid.uuid4())
filename = session.call_plugin('kernel', 'create_kernel_ramdisk', args)
filename = session.call_plugin('kernel.py', 'create_kernel_ramdisk',
args)
if filename == "":
return _fetch_disk_image(context, session, instance, name_label,
@ -1195,7 +1196,7 @@ def destroy_kernel_ramdisk(session, instance, kernel, ramdisk):
if args:
LOG.debug("Removing kernel/ramdisk files from dom0",
instance=instance)
session.call_plugin('kernel', 'remove_kernel_ramdisk', args)
session.call_plugin('kernel.py', 'remove_kernel_ramdisk', args)
def _get_image_vdi_label(image_id):
@ -1550,7 +1551,7 @@ def _fetch_disk_image(context, session, instance, name_label, image_id,
args['image-size'] = str(vdi_size)
if CONF.xenserver.cache_images != 'none':
args['cached-image'] = image_id
filename = session.call_plugin('kernel', 'copy_vdi', args)
filename = session.call_plugin('kernel.py', 'copy_vdi', args)
# Remove the VDI as it is not needed anymore.
destroy_vdi(session, vdi_ref)
@ -1793,7 +1794,7 @@ def compile_diagnostics(vm_rec):
def fetch_bandwidth(session):
bw = session.call_plugin_serialized('bandwidth', 'fetch_all_bandwidth')
bw = session.call_plugin_serialized('bandwidth.py', 'fetch_all_bandwidth')
return bw
@ -2547,7 +2548,7 @@ def _import_migrated_vhds(session, instance, chain_label, disk_type,
"""Move and possibly link VHDs via the XAPI plugin."""
# TODO(johngarbutt) tidy up plugin params
imported_vhds = session.call_plugin_serialized(
'migration', 'move_vhds_into_sr', instance_uuid=chain_label,
'migration.py', 'move_vhds_into_sr', instance_uuid=chain_label,
sr_path=get_sr_path(session), uuid_stack=_make_uuid_stack())
# Now we rescan the SR so we find the VHDs
@ -2573,7 +2574,7 @@ def migrate_vhd(session, instance, vdi_uuid, dest, sr_path, seq_num,
chain_label = instance['uuid'] + "_ephemeral_%d" % ephemeral_number
try:
# TODO(johngarbutt) tidy up plugin params
session.call_plugin_serialized('migration', 'transfer_vhd',
session.call_plugin_serialized('migration.py', 'transfer_vhd',
instance_uuid=chain_label, host=dest, vdi_uuid=vdi_uuid,
sr_path=sr_path, seq_num=seq_num)
except session.XenAPI.Failure:
@ -2638,7 +2639,7 @@ def handle_ipxe_iso(session, instance, cd_vdi, network_info):
dns = subnet['dns'][0]['address']
try:
session.call_plugin_serialized("ipxe", "inject", sr_path,
session.call_plugin_serialized('ipxe.py', 'inject', sr_path,
cd_vdi['uuid'], boot_menu_url, ip_address, netmask,
gateway, dns, CONF.xenserver.ipxe_mkisofs_cmd)
except session.XenAPI.Failure as exc:

4
nova/virt/xenapi/vmops.py
View File

@ -1807,7 +1807,7 @@ class VMOps(object):
dom_id = self._get_last_dom_id(instance, check_rescue=True)
try:
raw_console_data = self._session.call_plugin('console',
raw_console_data = self._session.call_plugin('console.py',
'get_console_log', {'dom_id': dom_id})
except self._session.XenAPI.Failure:
LOG.exception(_LE("Guest does not have a console available"))
@ -2222,7 +2222,7 @@ class VMOps(object):
except AttributeError:
config_value = None
try:
config_value = self._make_plugin_call('config_file',
config_value = self._make_plugin_call('config_file.py',
'get_val',
key='relax-xsm-sr-check')
except Exception:

129
plugins/xenserver/xenapi/etc/xapi.d/plugins/_bittorrent_seeder
View File

@ -1,129 +0,0 @@
#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Seed a bittorent image. This file should not be executed directly, rather it
should be kicked off by the `bittorent` dom0 plugin."""
import os
import sys
import time
import libtorrent
import pluginlib_nova
pluginlib_nova.configure_logging('_bittorrent_seeder')
logging = pluginlib_nova.logging
def _daemonize(stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
"""Daemonize the current process.
Do the UNIX double-fork magic, see Stevens' "Advanced Programming
in the UNIX Environment" for details (ISBN 0201563177).
Source: http://www.jejik.com/articles/2007/02/
a_simple_unix_linux_daemon_in_python/
"""
# 1st fork
try:
pid = os.fork()
if pid > 0:
# first parent returns
return False
except OSError, e: # noqa
logging.error("fork #1 failed: %d (%s)" % (
e.errno, e.strerror))
return
# decouple from parent environment
os.chdir("/")
os.setsid()
os.umask(0)
# 2nd fork
try:
pid = os.fork()
if pid > 0:
# second parent exits
sys.exit(0)
except OSError, e: # noqa
logging.error("fork #2 failed: %d (%s)" % (
e.errno, e.strerror))
return
# redirect standard file descriptors
sys.stdout.flush()
sys.stderr.flush()
si = open(stdin, 'r')
so = open(stdout, 'a+')
se = open(stderr, 'a+', 0)
os.dup2(si.fileno(), sys.stdin.fileno())
os.dup2(so.fileno(), sys.stdout.fileno())
os.dup2(se.fileno(), sys.stderr.fileno())
return True
def main(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end):
seed_time = time.time() + torrent_seed_duration
logging.debug("Seeding '%s' for %d secs" % (
torrent_path, torrent_seed_duration))
child = _daemonize()
if not child:
return
# At this point we're the daemonized child...
session = libtorrent.session()
session.listen_on(torrent_listen_port_start, torrent_listen_port_end)
torrent_file = open(torrent_path, 'rb')
try:
torrent_data = torrent_file.read()
finally:
torrent_file.close()
decoded_data = libtorrent.bdecode(torrent_data)
info = libtorrent.torrent_info(decoded_data)
torrent = session.add_torrent(
info, seed_cache_path,
storage_mode=libtorrent.storage_mode_t.storage_mode_sparse)
try:
while time.time() < seed_time:
time.sleep(5)
finally:
session.remove_torrent(torrent)
logging.debug("Seeding of '%s' finished" % torrent_path)
if __name__ == "__main__":
(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end) = sys.argv[1:]
torrent_seed_duration = int(torrent_seed_duration)
torrent_listen_port_start = int(torrent_listen_port_start)
torrent_listen_port_end = int(torrent_listen_port_end)
main(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end)

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/_bittorrent_seeder Symbolic link
View File

@ -0,0 +1 @@
_bittorrent_seeder.py

129
plugins/xenserver/xenapi/etc/xapi.d/plugins/_bittorrent_seeder.py Executable file
View File

@ -0,0 +1,129 @@
#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Seed a bittorent image. This file should not be executed directly, rather it
should be kicked off by the `bittorent` dom0 plugin."""
import os
import sys
import time
import libtorrent
import pluginlib_nova
pluginlib_nova.configure_logging('_bittorrent_seeder')
logging = pluginlib_nova.logging
def _daemonize(stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
"""Daemonize the current process.
Do the UNIX double-fork magic, see Stevens' "Advanced Programming
in the UNIX Environment" for details (ISBN 0201563177).
Source: http://www.jejik.com/articles/2007/02/
a_simple_unix_linux_daemon_in_python/
"""
# 1st fork
try:
pid = os.fork()
if pid > 0:
# first parent returns
return False
except OSError, e: # noqa
logging.error("fork #1 failed: %d (%s)" % (
e.errno, e.strerror))
return
# decouple from parent environment
os.chdir("/")
os.setsid()
os.umask(0)
# 2nd fork
try:
pid = os.fork()
if pid > 0:
# second parent exits
sys.exit(0)
except OSError, e: # noqa
logging.error("fork #2 failed: %d (%s)" % (
e.errno, e.strerror))
return
# redirect standard file descriptors
sys.stdout.flush()
sys.stderr.flush()
si = open(stdin, 'r')
so = open(stdout, 'a+')
se = open(stderr, 'a+', 0)
os.dup2(si.fileno(), sys.stdin.fileno())
os.dup2(so.fileno(), sys.stdout.fileno())
os.dup2(se.fileno(), sys.stderr.fileno())
return True
def main(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end):
seed_time = time.time() + torrent_seed_duration
logging.debug("Seeding '%s' for %d secs" % (
torrent_path, torrent_seed_duration))
child = _daemonize()
if not child:
return
# At this point we're the daemonized child...
session = libtorrent.session()
session.listen_on(torrent_listen_port_start, torrent_listen_port_end)
torrent_file = open(torrent_path, 'rb')
try:
torrent_data = torrent_file.read()
finally:
torrent_file.close()
decoded_data = libtorrent.bdecode(torrent_data)
info = libtorrent.torrent_info(decoded_data)
torrent = session.add_torrent(
info, seed_cache_path,
storage_mode=libtorrent.storage_mode_t.storage_mode_sparse)
try:
while time.time() < seed_time:
time.sleep(5)
finally:
session.remove_torrent(torrent)
logging.debug("Seeding of '%s' finished" % torrent_path)
if __name__ == "__main__":
(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end) = sys.argv[1:]
torrent_seed_duration = int(torrent_seed_duration)
torrent_listen_port_start = int(torrent_listen_port_start)
torrent_listen_port_end = int(torrent_listen_port_end)
main(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end)

266
plugins/xenserver/xenapi/etc/xapi.d/plugins/agent
View File

@ -1,266 +0,0 @@
#!/usr/bin/env python
# Copyright (c) 2011 Citrix Systems, Inc.
# Copyright 2011 OpenStack Foundation
# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
#
# XenAPI plugin for reading/writing information to xenstore
#
import base64
import commands # noqa
try:
import json
except ImportError:
import simplejson as json
import time
import XenAPIPlugin
import pluginlib_nova
pluginlib_nova.configure_logging("agent")
import xenstore
DEFAULT_TIMEOUT = 30
PluginError = pluginlib_nova.PluginError
_ = pluginlib_nova._
class TimeoutError(StandardError):
pass
class RebootDetectedError(StandardError):
pass
def version(self, arg_dict):
"""Get version of agent."""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
arg_dict["value"] = json.dumps({"name": "version", "value": "agent"})
request_id = arg_dict["id"]
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def key_init(self, arg_dict):
"""Handles the Diffie-Hellman key exchange with the agent to
establish the shared secret key used to encrypt/decrypt sensitive
info to be passed, such as passwords. Returns the shared
secret key value.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
# WARNING: Some older Windows agents will crash if the public key isn't
# a string
pub = arg_dict["pub"]
arg_dict["value"] = json.dumps({"name": "keyinit", "value": pub})
request_id = arg_dict["id"]
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def password(self, arg_dict):
"""Writes a request to xenstore that tells the agent to set
the root password for the given VM. The password should be
encrypted using the shared secret key that was returned by a
previous call to key_init. The encrypted password value should
be passed as the value for the 'enc_pass' key in arg_dict.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
enc_pass = arg_dict["enc_pass"]
arg_dict["value"] = json.dumps({"name": "password", "value": enc_pass})
request_id = arg_dict["id"]
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def resetnetwork(self, arg_dict):
"""Writes a request to xenstore that tells the agent
to reset networking.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
arg_dict['value'] = json.dumps({'name': 'resetnetwork', 'value': ''})
request_id = arg_dict['id']
arg_dict['path'] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def inject_file(self, arg_dict):
"""Expects a file path and the contents of the file to be written. Both
should be base64-encoded in order to eliminate errors as they are passed
through the stack. Writes that information to xenstore for the agent,
which will decode the file and intended path, and create it on the
instance. The original agent munged both of these into a single entry;
the new agent keeps them separate. We will need to test for the new agent,
and write the xenstore records to match the agent version. We will also
need to test to determine if the file injection method on the agent has
been disabled, and raise a NotImplemented error if that is the case.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
b64_path = arg_dict["b64_path"]
b64_file = arg_dict["b64_contents"]
request_id = arg_dict["id"]
agent_features = _get_agent_features(self, arg_dict)
if "file_inject" in agent_features:
# New version of the agent. Agent should receive a 'value'
# key whose value is a dictionary containing 'b64_path' and
# 'b64_file'. See old version below.
arg_dict["value"] = json.dumps({"name": "file_inject",
"value": {"b64_path": b64_path, "b64_file": b64_file}})
elif "injectfile" in agent_features:
# Old agent requires file path and file contents to be
# combined into one base64 value.
raw_path = base64.b64decode(b64_path)
raw_file = base64.b64decode(b64_file)
new_b64 = base64.b64encode("%s,%s" % (raw_path, raw_file))
arg_dict["value"] = json.dumps({"name": "injectfile",
"value": new_b64})
else:
# Either the methods don't exist in the agent, or they
# have been disabled.
raise NotImplementedError(_("NOT IMPLEMENTED: Agent does not"
" support file injection."))
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def agent_update(self, arg_dict):
"""Expects an URL and md5sum of the contents, then directs the agent to
update itself.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
request_id = arg_dict["id"]
url = arg_dict["url"]
md5sum = arg_dict["md5sum"]
arg_dict["value"] = json.dumps({"name": "agentupdate",
"value": "%s,%s" % (url, md5sum)})
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def _get_agent_features(self, arg_dict):
"""Return an array of features that an agent supports."""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
tmp_id = commands.getoutput("uuidgen")
dct = {}
dct.update(arg_dict)
dct["value"] = json.dumps({"name": "features", "value": ""})
dct["path"] = "data/host/%s" % tmp_id
xenstore.write_record(self, dct)
try:
resp = _wait_for_agent(self, tmp_id, dct, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
response = json.loads(resp)
if response['returncode'] != 0:
return response["message"].split(",")
else:
return {}
def _wait_for_agent(self, request_id, arg_dict, timeout):
"""Periodically checks xenstore for a response from the agent.
The request is always written to 'data/host/{id}', and
the agent's response for that request will be in 'data/guest/{id}'.
If no value appears from the agent within the timeout specified,
the original request is deleted and a TimeoutError is raised.
"""
arg_dict["path"] = "data/guest/%s" % request_id
arg_dict["ignore_missing_path"] = True
start = time.time()
reboot_detected = False
while time.time() - start < timeout:
ret = xenstore.read_record(self, arg_dict)
# Note: the response for None with be a string that includes
# double quotes.
if ret != '"None"':
# The agent responded
return ret
time.sleep(.5)
# NOTE(johngarbutt) If we can't find this domid, then
# the VM has rebooted, so we must trigger domid refresh.
# Check after the sleep to give xenstore time to update
# after the VM reboot.
exists_args = {
"dom_id": arg_dict["dom_id"],
"path": "name",
}
dom_id_is_present = xenstore.record_exists(exists_args)
if not dom_id_is_present:
reboot_detected = True
break
# No response within the timeout period; bail out
# First, delete the request record
arg_dict["path"] = "data/host/%s" % request_id
xenstore.delete_record(self, arg_dict)
if reboot_detected:
raise RebootDetectedError(_("REBOOT: dom_id %s no longer "
"present") % arg_dict["dom_id"])
else:
raise TimeoutError(_("TIMEOUT: No response from agent within"
" %s seconds.") % timeout)
if __name__ == "__main__":
XenAPIPlugin.dispatch(
{"version": version,
"key_init": key_init,
"password": password,
"resetnetwork": resetnetwork,
"inject_file": inject_file,
"agentupdate": agent_update})

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/agent Symbolic link
View File

@ -0,0 +1 @@
agent.py

268
plugins/xenserver/xenapi/etc/xapi.d/plugins/agent.py Executable file
View File

@ -0,0 +1,268 @@
#!/usr/bin/env python
# Copyright (c) 2011 Citrix Systems, Inc.
# Copyright 2011 OpenStack Foundation
# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
# TODO(sfinucan): Remove the symlinks in this folder once Ocata is released
#
# XenAPI plugin for reading/writing information to xenstore
#
import base64
import commands # noqa
try:
import json
except ImportError:
import simplejson as json
import time
import XenAPIPlugin
import pluginlib_nova
pluginlib_nova.configure_logging("agent")
import xenstore
DEFAULT_TIMEOUT = 30
PluginError = pluginlib_nova.PluginError
_ = pluginlib_nova._
class TimeoutError(StandardError):
pass
class RebootDetectedError(StandardError):
pass
def version(self, arg_dict):
"""Get version of agent."""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
arg_dict["value"] = json.dumps({"name": "version", "value": "agent"})
request_id = arg_dict["id"]
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def key_init(self, arg_dict):
"""Handles the Diffie-Hellman key exchange with the agent to
establish the shared secret key used to encrypt/decrypt sensitive
info to be passed, such as passwords. Returns the shared
secret key value.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
# WARNING: Some older Windows agents will crash if the public key isn't
# a string
pub = arg_dict["pub"]
arg_dict["value"] = json.dumps({"name": "keyinit", "value": pub})
request_id = arg_dict["id"]
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def password(self, arg_dict):
"""Writes a request to xenstore that tells the agent to set
the root password for the given VM. The password should be
encrypted using the shared secret key that was returned by a
previous call to key_init. The encrypted password value should
be passed as the value for the 'enc_pass' key in arg_dict.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
enc_pass = arg_dict["enc_pass"]
arg_dict["value"] = json.dumps({"name": "password", "value": enc_pass})
request_id = arg_dict["id"]
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def resetnetwork(self, arg_dict):
"""Writes a request to xenstore that tells the agent
to reset networking.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
arg_dict['value'] = json.dumps({'name': 'resetnetwork', 'value': ''})
request_id = arg_dict['id']
arg_dict['path'] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def inject_file(self, arg_dict):
"""Expects a file path and the contents of the file to be written. Both
should be base64-encoded in order to eliminate errors as they are passed
through the stack. Writes that information to xenstore for the agent,
which will decode the file and intended path, and create it on the
instance. The original agent munged both of these into a single entry;
the new agent keeps them separate. We will need to test for the new agent,
and write the xenstore records to match the agent version. We will also
need to test to determine if the file injection method on the agent has
been disabled, and raise a NotImplemented error if that is the case.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
b64_path = arg_dict["b64_path"]
b64_file = arg_dict["b64_contents"]
request_id = arg_dict["id"]
agent_features = _get_agent_features(self, arg_dict)
if "file_inject" in agent_features:
# New version of the agent. Agent should receive a 'value'
# key whose value is a dictionary containing 'b64_path' and
# 'b64_file'. See old version below.
arg_dict["value"] = json.dumps({"name": "file_inject",
"value": {"b64_path": b64_path, "b64_file": b64_file}})
elif "injectfile" in agent_features:
# Old agent requires file path and file contents to be
# combined into one base64 value.
raw_path = base64.b64decode(b64_path)
raw_file = base64.b64decode(b64_file)
new_b64 = base64.b64encode("%s,%s" % (raw_path, raw_file))
arg_dict["value"] = json.dumps({"name": "injectfile",
"value": new_b64})
else:
# Either the methods don't exist in the agent, or they
# have been disabled.
raise NotImplementedError(_("NOT IMPLEMENTED: Agent does not"
" support file injection."))
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def agent_update(self, arg_dict):
"""Expects an URL and md5sum of the contents, then directs the agent to
update itself.
"""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
request_id = arg_dict["id"]
url = arg_dict["url"]
md5sum = arg_dict["md5sum"]
arg_dict["value"] = json.dumps({"name": "agentupdate",
"value": "%s,%s" % (url, md5sum)})
arg_dict["path"] = "data/host/%s" % request_id
xenstore.write_record(self, arg_dict)
try:
resp = _wait_for_agent(self, request_id, arg_dict, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
return resp
def _get_agent_features(self, arg_dict):
"""Return an array of features that an agent supports."""
timeout = int(arg_dict.pop('timeout', DEFAULT_TIMEOUT))
tmp_id = commands.getoutput("uuidgen")
dct = {}
dct.update(arg_dict)
dct["value"] = json.dumps({"name": "features", "value": ""})
dct["path"] = "data/host/%s" % tmp_id
xenstore.write_record(self, dct)
try:
resp = _wait_for_agent(self, tmp_id, dct, timeout)
except TimeoutError, e: # noqa
raise PluginError(e)
response = json.loads(resp)
if response['returncode'] != 0:
return response["message"].split(",")
else:
return {}
def _wait_for_agent(self, request_id, arg_dict, timeout):
"""Periodically checks xenstore for a response from the agent.
The request is always written to 'data/host/{id}', and
the agent's response for that request will be in 'data/guest/{id}'.
If no value appears from the agent within the timeout specified,
the original request is deleted and a TimeoutError is raised.
"""
arg_dict["path"] = "data/guest/%s" % request_id
arg_dict["ignore_missing_path"] = True
start = time.time()
reboot_detected = False
while time.time() - start < timeout:
ret = xenstore.read_record(self, arg_dict)
# Note: the response for None with be a string that includes
# double quotes.
if ret != '"None"':
# The agent responded
return ret
time.sleep(.5)
# NOTE(johngarbutt) If we can't find this domid, then
# the VM has rebooted, so we must trigger domid refresh.
# Check after the sleep to give xenstore time to update
# after the VM reboot.
exists_args = {
"dom_id": arg_dict["dom_id"],
"path": "name",
}
dom_id_is_present = xenstore.record_exists(exists_args)
if not dom_id_is_present:
reboot_detected = True
break
# No response within the timeout period; bail out
# First, delete the request record
arg_dict["path"] = "data/host/%s" % request_id
xenstore.delete_record(self, arg_dict)
if reboot_detected:
raise RebootDetectedError(_("REBOOT: dom_id %s no longer "
"present") % arg_dict["dom_id"])
else:
raise TimeoutError(_("TIMEOUT: No response from agent within"
" %s seconds.") % timeout)
if __name__ == "__main__":
XenAPIPlugin.dispatch(
{"version": version,
"key_init": key_init,
"password": password,
"resetnetwork": resetnetwork,
"inject_file": inject_file,
"agentupdate": agent_update})

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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Fetch Bandwidth data from VIF network devices."""
import utils
import pluginlib_nova
import re
pluginlib_nova.configure_logging('bandwidth')
def _read_proc_net():
f = open('/proc/net/dev', 'r')
try:
return f.readlines()
finally:
f.close()
def _get_bandwitdth_from_proc():
devs = [l.strip() for l in _read_proc_net()]
# ignore headers
devs = devs[2:]
vif_pattern = re.compile("^vif(\d+)\.(\d+)")
dlist = [d.split(':', 1) for d in devs if vif_pattern.match(d)]
devmap = dict()
for name, stats in dlist:
slist = stats.split()
dom, vifnum = name[3:].split('.', 1)
dev = devmap.get(dom, {})
# Note, we deliberately swap in and out, as instance traffic
# shows up inverted due to going though the bridge. (mdragon)
dev[vifnum] = dict(bw_in=int(slist[8]), bw_out=int(slist[0]))
devmap[dom] = dev
return devmap
def fetch_all_bandwidth(session):
return _get_bandwitdth_from_proc()
if __name__ == '__main__':
utils.register_plugin_calls(fetch_all_bandwidth)

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bandwidth.py

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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Fetch Bandwidth data from VIF network devices."""
import utils
import pluginlib_nova
import re
pluginlib_nova.configure_logging('bandwidth')
def _read_proc_net():
f = open('/proc/net/dev', 'r')
try:
return f.readlines()
finally:
f.close()
def _get_bandwitdth_from_proc():
devs = [l.strip() for l in _read_proc_net()]
# ignore headers
devs = devs[2:]
vif_pattern = re.compile("^vif(\d+)\.(\d+)")
dlist = [d.split(':', 1) for d in devs if vif_pattern.match(d)]
devmap = dict()
for name, stats in dlist:
slist = stats.split()
dom, vifnum = name[3:].split('.', 1)
dev = devmap.get(dom, {})
# Note, we deliberately swap in and out, as instance traffic
# shows up inverted due to going though the bridge. (mdragon)
dev[vifnum] = dict(bw_in=int(slist[8]), bw_out=int(slist[0]))
devmap[dom] = dev
return devmap
def fetch_all_bandwidth(session):
return _get_bandwitdth_from_proc()
if __name__ == '__main__':
utils.register_plugin_calls(fetch_all_bandwidth)

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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Download images via BitTorrent."""
import errno
import inspect
import os
import random
import shutil
import tempfile
import time
import libtorrent
import urllib2
import utils
import pluginlib_nova
pluginlib_nova.configure_logging('bittorrent')
logging = pluginlib_nova.logging
# Taken from units since we don't pull down full library
Mi = 1024 ** 2
DEFAULT_TORRENT_CACHE = '/images/torrents'
DEFAULT_SEED_CACHE = '/images/seeds'
SEEDER_PROCESS = '_bittorrent_seeder'
DEFAULT_MMA = int(libtorrent.bandwidth_mixed_algo_t.prefer_tcp)
DEFAULT_MORQ = 400
DEFAULT_MQDB = 8 * Mi
DEFAULT_MQDBLW = 0
def _make_torrent_cache():
torrent_cache_path = os.environ.get(
'TORRENT_CACHE', DEFAULT_TORRENT_CACHE)
if not os.path.exists(torrent_cache_path):
os.mkdir(torrent_cache_path)
return torrent_cache_path
def _fetch_torrent_file(torrent_cache_path, image_id, torrent_url):
torrent_path = os.path.join(
torrent_cache_path, image_id + '.torrent')
if not os.path.exists(torrent_path):
logging.info("Downloading %s" % torrent_url)
# Write contents to temporary path to ensure we don't have partially
# completed files in the cache.
temp_directory = tempfile.mkdtemp(dir=torrent_cache_path)
try:
temp_path = os.path.join(
temp_directory, os.path.basename(torrent_path))
temp_file = open(temp_path, 'wb')
try:
remote_torrent_file = urllib2.urlopen(torrent_url)
shutil.copyfileobj(remote_torrent_file, temp_file)
finally:
temp_file.close()
os.rename(temp_path, torrent_path)
finally:
shutil.rmtree(temp_directory)
return torrent_path
def _reap_old_torrent_files(torrent_cache_path, torrent_max_last_accessed):
"""Delete any torrent files that haven't been accessed recently."""
if not torrent_max_last_accessed:
logging.debug("Reaping old torrent files disabled, skipping...")
return
logging.debug("Preparing to reap old torrent files,"
" torrent_max_last_accessed=%d" % torrent_max_last_accessed)
for fname in os.listdir(torrent_cache_path):
torrent_path = os.path.join(torrent_cache_path, fname)
last_accessed = time.time() - os.path.getatime(torrent_path)
if last_accessed > torrent_max_last_accessed:
logging.debug("Reaping '%s', last_accessed=%d" % (
torrent_path, last_accessed))
utils.delete_if_exists(torrent_path)
def _download(torrent_path, save_as_path, torrent_listen_port_start,
torrent_listen_port_end, torrent_download_stall_cutoff):
session = libtorrent.session()
session.listen_on(torrent_listen_port_start, torrent_listen_port_end)
mixed_mode_algorithm = os.environ.get(
'DEFAULT_MIXED_MODE_ALGORITHM', DEFAULT_MMA)
max_out_request_queue = os.environ.get(
'DEFAULT_MAX_OUT_REQUEST_QUEUE', DEFAULT_MORQ)
max_queued_disk_bytes = os.environ.get(
'DEFAULT_MAX_QUEUED_DISK_BYTES', DEFAULT_MQDB)
max_queued_disk_bytes_low_watermark = os.environ.get(
'DEFAULT_MAX_QUEUED_DISK_BYTES_LOW_WATERMARK', DEFAULT_MQDBLW)
session_opts = {'mixed_mode_algorithm': mixed_mode_algorithm,
'max_queued_disk_bytes': max_queued_disk_bytes,
'max_out_request_queue': max_out_request_queue,
'max_queued_disk_bytes_low_watermark':
max_queued_disk_bytes_low_watermark}
session.set_settings(session_opts)
info = libtorrent.torrent_info(
libtorrent.bdecode(open(torrent_path, 'rb').read()))
torrent = session.add_torrent(
info, save_as_path,
storage_mode=libtorrent.storage_mode_t.storage_mode_sparse)
try:
last_progress = 0
last_progress_updated = time.time()
log_time = 0
while not torrent.is_seed():
s = torrent.status()
progress = s.progress * 100
if progress != last_progress:
last_progress = progress
last_progress_updated = time.time()
stall_duration = time.time() - last_progress_updated
if stall_duration > torrent_download_stall_cutoff:
logging.error(
"Download stalled: stall_duration=%d,"
" torrent_download_stall_cutoff=%d" % (
stall_duration, torrent_download_stall_cutoff))
raise Exception("Bittorrent download stall detected, bailing!")
log_time += 1
if log_time % 10 == 0:
logging.debug(
'%.2f%% complete (down: %.1f kb/s up: %.1f kB/s peers: %d)'
' %s %s' % (progress, s.download_rate / 1000,
s.upload_rate / 1000, s.num_peers, s.state,
torrent_path))
time.sleep(1)
finally:
session.remove_torrent(torrent)
logging.debug("Download of '%s' finished" % torrent_path)
def _should_seed(seed_path, torrent_seed_duration, torrent_seed_chance,
torrent_max_seeder_processes_per_host):
if not torrent_seed_duration:
logging.debug("Seeding disabled, skipping...")
return False
if os.path.exists(seed_path):
logging.debug("Seed is already present, skipping....")
return False
rand = random.random()
if rand > torrent_seed_chance:
logging.debug("%.2f > %.2f, seeding randomly skipping..." % (
rand, torrent_seed_chance))
return False
num_active_seeders = len(list(_active_seeder_processes()))
if (torrent_max_seeder_processes_per_host >= 0 and
num_active_seeders >= torrent_max_seeder_processes_per_host):
logging.debug("max number of seeder processes for this host reached"
" (%d), skipping..." %
torrent_max_seeder_processes_per_host)
return False
return True
def _seed(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end):
plugin_path = os.path.dirname(inspect.getabsfile(inspect.currentframe()))
seeder_path = os.path.join(plugin_path, SEEDER_PROCESS)
seed_cmd = map(str, [seeder_path, torrent_path, seed_cache_path,
torrent_seed_duration, torrent_listen_port_start,
torrent_listen_port_end])
utils.run_command(seed_cmd)
def _seed_if_needed(seed_cache_path, tarball_path, torrent_path,
torrent_seed_duration, torrent_seed_chance,
torrent_listen_port_start, torrent_listen_port_end,
torrent_max_seeder_processes_per_host):
seed_filename = os.path.basename(tarball_path)
seed_path = os.path.join(seed_cache_path, seed_filename)
if _should_seed(seed_path, torrent_seed_duration, torrent_seed_chance,
torrent_max_seeder_processes_per_host):
logging.debug("Preparing to seed '%s' for %d secs" % (
seed_path, torrent_seed_duration))
utils._rename(tarball_path, seed_path)
# Daemonize and seed the image
_seed(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end)
else:
utils.delete_if_exists(tarball_path)
def _extract_tarball(tarball_path, staging_path):
"""Extract the tarball into the staging directory."""
tarball_fileobj = open(tarball_path, 'rb')
try:
utils.extract_tarball(tarball_fileobj, staging_path)
finally:
tarball_fileobj.close()
def _active_seeder_processes():
"""Yields command-line of active seeder processes.
Roughly equivalent to performing ps | grep _bittorrent_seeder
"""
pids = [pid for pid in os.listdir('/proc') if pid.isdigit()]
for pid in pids:
try:
cmdline = open(os.path.join('/proc', pid, 'cmdline'), 'rb').read()
except IOError, e: # noqa
if e.errno != errno.ENOENT:
raise
if SEEDER_PROCESS in cmdline:
yield cmdline
def _reap_finished_seeds(seed_cache_path):
"""Delete any cached seeds where the seeder process has died."""
logging.debug("Preparing to reap finished seeds")
missing = {}
for fname in os.listdir(seed_cache_path):
seed_path = os.path.join(seed_cache_path, fname)
missing[seed_path] = None
for cmdline in _active_seeder_processes():
for seed_path in missing.keys():
seed_filename = os.path.basename(seed_path)
if seed_filename in cmdline:
del missing[seed_path]
for seed_path in missing:
logging.debug("Reaping cached seed '%s'" % seed_path)
utils.delete_if_exists(seed_path)
def _make_seed_cache():
seed_cache_path = os.environ.get('SEED_CACHE', DEFAULT_SEED_CACHE)
if not os.path.exists(seed_cache_path):
os.mkdir(seed_cache_path)
return seed_cache_path
def download_vhd(session, image_id, torrent_url, torrent_seed_duration,
torrent_seed_chance, torrent_max_last_accessed,
torrent_listen_port_start, torrent_listen_port_end,
torrent_download_stall_cutoff, uuid_stack, sr_path,
torrent_max_seeder_processes_per_host):
"""Download an image from BitTorrent, unbundle it, and then deposit the
VHDs into the storage repository
"""
seed_cache_path = _make_seed_cache()
torrent_cache_path = _make_torrent_cache()
# Housekeeping
_reap_finished_seeds(seed_cache_path)
_reap_old_torrent_files(torrent_cache_path, torrent_max_last_accessed)
torrent_path = _fetch_torrent_file(
torrent_cache_path, image_id, torrent_url)
staging_path = utils.make_staging_area(sr_path)
try:
tarball_filename = os.path.basename(torrent_path).replace(
'.torrent', '')
tarball_path = os.path.join(staging_path, tarball_filename)
# Download tarball into staging area
_download(torrent_path, staging_path, torrent_listen_port_start,
torrent_listen_port_end, torrent_download_stall_cutoff)
# Extract the tarball into the staging area
_extract_tarball(tarball_path, staging_path)
# Move the VHDs from the staging area into the storage repository
vdi_list = utils.import_vhds(sr_path, staging_path, uuid_stack)
# Seed image for others in the swarm
_seed_if_needed(seed_cache_path, tarball_path, torrent_path,
torrent_seed_duration, torrent_seed_chance,
torrent_listen_port_start, torrent_listen_port_end,
torrent_max_seeder_processes_per_host)
finally:
utils.cleanup_staging_area(staging_path)
return vdi_list
if __name__ == '__main__':
utils.register_plugin_calls(download_vhd)

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bittorrent.py

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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Download images via BitTorrent."""
import errno
import inspect
import os
import random
import shutil
import tempfile
import time
import libtorrent
import urllib2
import utils
import pluginlib_nova
pluginlib_nova.configure_logging('bittorrent')
logging = pluginlib_nova.logging
# Taken from units since we don't pull down full library
Mi = 1024 ** 2
DEFAULT_TORRENT_CACHE = '/images/torrents'
DEFAULT_SEED_CACHE = '/images/seeds'
SEEDER_PROCESS = '_bittorrent_seeder.py'
DEFAULT_MMA = int(libtorrent.bandwidth_mixed_algo_t.prefer_tcp)
DEFAULT_MORQ = 400
DEFAULT_MQDB = 8 * Mi
DEFAULT_MQDBLW = 0
def _make_torrent_cache():
torrent_cache_path = os.environ.get(
'TORRENT_CACHE', DEFAULT_TORRENT_CACHE)
if not os.path.exists(torrent_cache_path):
os.mkdir(torrent_cache_path)
return torrent_cache_path
def _fetch_torrent_file(torrent_cache_path, image_id, torrent_url):
torrent_path = os.path.join(
torrent_cache_path, image_id + '.torrent')
if not os.path.exists(torrent_path):
logging.info("Downloading %s" % torrent_url)
# Write contents to temporary path to ensure we don't have partially
# completed files in the cache.
temp_directory = tempfile.mkdtemp(dir=torrent_cache_path)
try:
temp_path = os.path.join(
temp_directory, os.path.basename(torrent_path))
temp_file = open(temp_path, 'wb')
try:
remote_torrent_file = urllib2.urlopen(torrent_url)
shutil.copyfileobj(remote_torrent_file, temp_file)
finally:
temp_file.close()
os.rename(temp_path, torrent_path)
finally:
shutil.rmtree(temp_directory)
return torrent_path
def _reap_old_torrent_files(torrent_cache_path, torrent_max_last_accessed):
"""Delete any torrent files that haven't been accessed recently."""
if not torrent_max_last_accessed:
logging.debug("Reaping old torrent files disabled, skipping...")
return
logging.debug("Preparing to reap old torrent files,"
" torrent_max_last_accessed=%d" % torrent_max_last_accessed)
for fname in os.listdir(torrent_cache_path):
torrent_path = os.path.join(torrent_cache_path, fname)
last_accessed = time.time() - os.path.getatime(torrent_path)
if last_accessed > torrent_max_last_accessed:
logging.debug("Reaping '%s', last_accessed=%d" % (
torrent_path, last_accessed))
utils.delete_if_exists(torrent_path)
def _download(torrent_path, save_as_path, torrent_listen_port_start,
torrent_listen_port_end, torrent_download_stall_cutoff):
session = libtorrent.session()
session.listen_on(torrent_listen_port_start, torrent_listen_port_end)
mixed_mode_algorithm = os.environ.get(
'DEFAULT_MIXED_MODE_ALGORITHM', DEFAULT_MMA)
max_out_request_queue = os.environ.get(
'DEFAULT_MAX_OUT_REQUEST_QUEUE', DEFAULT_MORQ)
max_queued_disk_bytes = os.environ.get(
'DEFAULT_MAX_QUEUED_DISK_BYTES', DEFAULT_MQDB)
max_queued_disk_bytes_low_watermark = os.environ.get(
'DEFAULT_MAX_QUEUED_DISK_BYTES_LOW_WATERMARK', DEFAULT_MQDBLW)
session_opts = {'mixed_mode_algorithm': mixed_mode_algorithm,
'max_queued_disk_bytes': max_queued_disk_bytes,
'max_out_request_queue': max_out_request_queue,
'max_queued_disk_bytes_low_watermark':
max_queued_disk_bytes_low_watermark}
session.set_settings(session_opts)
info = libtorrent.torrent_info(
libtorrent.bdecode(open(torrent_path, 'rb').read()))
torrent = session.add_torrent(
info, save_as_path,
storage_mode=libtorrent.storage_mode_t.storage_mode_sparse)
try:
last_progress = 0
last_progress_updated = time.time()
log_time = 0
while not torrent.is_seed():
s = torrent.status()
progress = s.progress * 100
if progress != last_progress:
last_progress = progress
last_progress_updated = time.time()
stall_duration = time.time() - last_progress_updated
if stall_duration > torrent_download_stall_cutoff:
logging.error(
"Download stalled: stall_duration=%d,"
" torrent_download_stall_cutoff=%d" % (
stall_duration, torrent_download_stall_cutoff))
raise Exception("Bittorrent download stall detected, bailing!")
log_time += 1
if log_time % 10 == 0:
logging.debug(
'%.2f%% complete (down: %.1f kb/s up: %.1f kB/s peers: %d)'
' %s %s' % (progress, s.download_rate / 1000,
s.upload_rate / 1000, s.num_peers, s.state,
torrent_path))
time.sleep(1)
finally:
session.remove_torrent(torrent)
logging.debug("Download of '%s' finished" % torrent_path)
def _should_seed(seed_path, torrent_seed_duration, torrent_seed_chance,
torrent_max_seeder_processes_per_host):
if not torrent_seed_duration:
logging.debug("Seeding disabled, skipping...")
return False
if os.path.exists(seed_path):
logging.debug("Seed is already present, skipping....")
return False
rand = random.random()
if rand > torrent_seed_chance:
logging.debug("%.2f > %.2f, seeding randomly skipping..." % (
rand, torrent_seed_chance))
return False
num_active_seeders = len(list(_active_seeder_processes()))
if (torrent_max_seeder_processes_per_host >= 0 and
num_active_seeders >= torrent_max_seeder_processes_per_host):
logging.debug("max number of seeder processes for this host reached"
" (%d), skipping..." %
torrent_max_seeder_processes_per_host)
return False
return True
def _seed(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end):
plugin_path = os.path.dirname(inspect.getabsfile(inspect.currentframe()))
seeder_path = os.path.join(plugin_path, SEEDER_PROCESS)
seed_cmd = map(str, [seeder_path, torrent_path, seed_cache_path,
torrent_seed_duration, torrent_listen_port_start,
torrent_listen_port_end])
utils.run_command(seed_cmd)
def _seed_if_needed(seed_cache_path, tarball_path, torrent_path,
torrent_seed_duration, torrent_seed_chance,
torrent_listen_port_start, torrent_listen_port_end,
torrent_max_seeder_processes_per_host):
seed_filename = os.path.basename(tarball_path)
seed_path = os.path.join(seed_cache_path, seed_filename)
if _should_seed(seed_path, torrent_seed_duration, torrent_seed_chance,
torrent_max_seeder_processes_per_host):
logging.debug("Preparing to seed '%s' for %d secs" % (
seed_path, torrent_seed_duration))
utils._rename(tarball_path, seed_path)
# Daemonize and seed the image
_seed(torrent_path, seed_cache_path, torrent_seed_duration,
torrent_listen_port_start, torrent_listen_port_end)
else:
utils.delete_if_exists(tarball_path)
def _extract_tarball(tarball_path, staging_path):
"""Extract the tarball into the staging directory."""
tarball_fileobj = open(tarball_path, 'rb')
try:
utils.extract_tarball(tarball_fileobj, staging_path)
finally:
tarball_fileobj.close()
def _active_seeder_processes():
"""Yields command-line of active seeder processes.
Roughly equivalent to performing ps | grep _bittorrent_seeder
"""
pids = [pid for pid in os.listdir('/proc') if pid.isdigit()]
for pid in pids:
try:
cmdline = open(os.path.join('/proc', pid, 'cmdline'), 'rb').read()
except IOError, e: # noqa
if e.errno != errno.ENOENT:
raise
if SEEDER_PROCESS in cmdline:
yield cmdline
def _reap_finished_seeds(seed_cache_path):
"""Delete any cached seeds where the seeder process has died."""
logging.debug("Preparing to reap finished seeds")
missing = {}
for fname in os.listdir(seed_cache_path):
seed_path = os.path.join(seed_cache_path, fname)
missing[seed_path] = None
for cmdline in _active_seeder_processes():
for seed_path in missing.keys():
seed_filename = os.path.basename(seed_path)
if seed_filename in cmdline:
del missing[seed_path]
for seed_path in missing:
logging.debug("Reaping cached seed '%s'" % seed_path)
utils.delete_if_exists(seed_path)
def _make_seed_cache():
seed_cache_path = os.environ.get('SEED_CACHE', DEFAULT_SEED_CACHE)
if not os.path.exists(seed_cache_path):
os.mkdir(seed_cache_path)
return seed_cache_path
def download_vhd(session, image_id, torrent_url, torrent_seed_duration,
torrent_seed_chance, torrent_max_last_accessed,
torrent_listen_port_start, torrent_listen_port_end,
torrent_download_stall_cutoff, uuid_stack, sr_path,
torrent_max_seeder_processes_per_host):
"""Download an image from BitTorrent, unbundle it, and then deposit the
VHDs into the storage repository
"""
seed_cache_path = _make_seed_cache()
torrent_cache_path = _make_torrent_cache()
# Housekeeping
_reap_finished_seeds(seed_cache_path)
_reap_old_torrent_files(torrent_cache_path, torrent_max_last_accessed)
torrent_path = _fetch_torrent_file(
torrent_cache_path, image_id, torrent_url)
staging_path = utils.make_staging_area(sr_path)
try:
tarball_filename = os.path.basename(torrent_path).replace(
'.torrent', '')
tarball_path = os.path.join(staging_path, tarball_filename)
# Download tarball into staging area
_download(torrent_path, staging_path, torrent_listen_port_start,
torrent_listen_port_end, torrent_download_stall_cutoff)
# Extract the tarball into the staging area
_extract_tarball(tarball_path, staging_path)
# Move the VHDs from the staging area into the storage repository
vdi_list = utils.import_vhds(sr_path, staging_path, uuid_stack)
# Seed image for others in the swarm
_seed_if_needed(seed_cache_path, tarball_path, torrent_path,
torrent_seed_duration, torrent_seed_chance,
torrent_listen_port_start, torrent_listen_port_end,
torrent_max_seeder_processes_per_host)
finally:
utils.cleanup_staging_area(staging_path)
return vdi_list
if __name__ == '__main__':
utils.register_plugin_calls(download_vhd)

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plugins/xenserver/xenapi/etc/xapi.d/plugins/config_file
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@ -1,34 +0,0 @@
#!/usr/bin/env python
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
import XenAPIPlugin
def get_val(session, args):
config_key = args['key']
config_file = open('/etc/xapi.conf')
try:
for line in config_file:
split = line.split('=')
if (len(split) == 2) and (split[0].strip() == config_key):
return split[1].strip()
return ""
finally:
config_file.close()
if __name__ == '__main__':
XenAPIPlugin.dispatch({"get_val": get_val})

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/config_file Symbolic link
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config_file.py

34
plugins/xenserver/xenapi/etc/xapi.d/plugins/config_file.py Executable file
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#!/usr/bin/env python
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
import XenAPIPlugin
def get_val(session, args):
config_key = args['key']
config_file = open('/etc/xapi.conf')
try:
for line in config_file:
split = line.split('=')
if (len(split) == 2) and (split[0].strip() == config_key):
return split[1].strip()
return ""
finally:
config_file.close()
if __name__ == '__main__':
XenAPIPlugin.dispatch({"get_val": get_val})

89
plugins/xenserver/xenapi/etc/xapi.d/plugins/console
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@ -1,89 +0,0 @@
#!/usr/bin/python
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""
To configure this plugin, you must set the following xenstore key:
/local/logconsole/@ = "/var/log/xen/guest/console.%d"
This can be done by running:
xenstore-write /local/logconsole/@ "/var/log/xen/guest/console.%d"
WARNING:
You should ensure appropriate log rotation to ensure
guests are not able to consume too much Dom0 disk space,
and equally should not be able to stop other guests from logging.
Adding and removing the following xenstore key will reopen the log,
as will be required after a log rotate:
/local/logconsole/<dom_id>
"""
import base64
import logging
import zlib
import XenAPIPlugin
import pluginlib_nova
pluginlib_nova.configure_logging("console")
CONSOLE_LOG_DIR = '/var/log/xen/guest'
CONSOLE_LOG_FILE_PATTERN = CONSOLE_LOG_DIR + '/console.%d'
MAX_CONSOLE_BYTES = 102400
SEEK_SET = 0
SEEK_END = 2
def _last_bytes(file_like_object):
try:
file_like_object.seek(-MAX_CONSOLE_BYTES, SEEK_END)
except IOError, e: # noqa
if e.errno == 22:
file_like_object.seek(0, SEEK_SET)
else:
raise
return file_like_object.read()
def get_console_log(session, arg_dict):
try:
raw_dom_id = arg_dict['dom_id']
except KeyError:
raise pluginlib_nova.PluginError("Missing dom_id")
try:
dom_id = int(raw_dom_id)
except ValueError:
raise pluginlib_nova.PluginError("Invalid dom_id")
logfile = open(CONSOLE_LOG_FILE_PATTERN % dom_id, 'rb')
try:
try:
log_content = _last_bytes(logfile)
except IOError, e: # noqa
msg = "Error reading console: %s" % e
logging.debug(msg)
raise pluginlib_nova.PluginError(msg)
finally:
logfile.close()
return base64.b64encode(zlib.compress(log_content))
if __name__ == "__main__":
XenAPIPlugin.dispatch({"get_console_log": get_console_log})

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/console Symbolic link
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@ -0,0 +1 @@
console.py

89
plugins/xenserver/xenapi/etc/xapi.d/plugins/console.py Executable file
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#!/usr/bin/python
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""
To configure this plugin, you must set the following xenstore key:
/local/logconsole/@ = "/var/log/xen/guest/console.%d"
This can be done by running:
xenstore-write /local/logconsole/@ "/var/log/xen/guest/console.%d"
WARNING:
You should ensure appropriate log rotation to ensure
guests are not able to consume too much Dom0 disk space,
and equally should not be able to stop other guests from logging.
Adding and removing the following xenstore key will reopen the log,
as will be required after a log rotate:
/local/logconsole/<dom_id>
"""
import base64
import logging
import zlib
import XenAPIPlugin
import pluginlib_nova
pluginlib_nova.configure_logging("console")
CONSOLE_LOG_DIR = '/var/log/xen/guest'
CONSOLE_LOG_FILE_PATTERN = CONSOLE_LOG_DIR + '/console.%d'
MAX_CONSOLE_BYTES = 102400
SEEK_SET = 0
SEEK_END = 2
def _last_bytes(file_like_object):
try:
file_like_object.seek(-MAX_CONSOLE_BYTES, SEEK_END)
except IOError, e: # noqa
if e.errno == 22:
file_like_object.seek(0, SEEK_SET)
else:
raise
return file_like_object.read()
def get_console_log(session, arg_dict):
try:
raw_dom_id = arg_dict['dom_id']
except KeyError:
raise pluginlib_nova.PluginError("Missing dom_id")
try:
dom_id = int(raw_dom_id)
except ValueError:
raise pluginlib_nova.PluginError("Invalid dom_id")
logfile = open(CONSOLE_LOG_FILE_PATTERN % dom_id, 'rb')
try:
try:
log_content = _last_bytes(logfile)
except IOError, e: # noqa
msg = "Error reading console: %s" % e
logging.debug(msg)
raise pluginlib_nova.PluginError(msg)
finally:
logfile.close()
return base64.b64encode(zlib.compress(log_content))
if __name__ == "__main__":
XenAPIPlugin.dispatch({"get_console_log": get_console_log})

632
plugins/xenserver/xenapi/etc/xapi.d/plugins/glance
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@ -1,632 +0,0 @@
#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# Copyright (c) 2010 Citrix Systems, Inc.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Handle the uploading and downloading of images via Glance."""
try:
import httplib
except ImportError:
from six.moves import http_client as httplib
try:
import json
except ImportError:
import simplejson as json
import md5 # noqa
import socket
import urllib2
from urlparse import urlparse
import pluginlib_nova
import utils
pluginlib_nova.configure_logging('glance')
logging = pluginlib_nova.logging
PluginError = pluginlib_nova.PluginError
SOCKET_TIMEOUT_SECONDS = 90
class RetryableError(Exception):
pass
def _create_connection(scheme, netloc):
if scheme == 'https':
conn = httplib.HTTPSConnection(netloc)
else:
conn = httplib.HTTPConnection(netloc)
conn.connect()
return conn
def _download_tarball_and_verify(request, staging_path):
# NOTE(johngarbutt) By default, there is no timeout.
# To ensure the script does not hang if we lose connection
# to glance, we add this socket timeout.
# This is here so there is no chance the timeout out has
# been adjusted by other library calls.
socket.setdefaulttimeout(SOCKET_TIMEOUT_SECONDS)
try:
response = urllib2.urlopen(request)
except urllib2.HTTPError, error: # noqa
raise RetryableError(error)
except urllib2.URLError, error: # noqa
raise RetryableError(error)
except httplib.HTTPException, error: # noqa
# httplib.HTTPException and derivatives (BadStatusLine in particular)
# don't have a useful __repr__ or __str__
raise RetryableError('%s: %s' % (error.__class__.__name__, error))
url = request.get_full_url()
logging.info("Reading image data from %s" % url)
callback_data = {'bytes_read': 0}
checksum = md5.new()
def update_md5(chunk):
callback_data['bytes_read'] += len(chunk)
checksum.update(chunk)
try:
try:
utils.extract_tarball(response, staging_path, callback=update_md5)
except Exception, error: # noqa
raise RetryableError(error)
finally:
bytes_read = callback_data['bytes_read']
logging.info("Read %d bytes from %s", bytes_read, url)
# Use ETag if available, otherwise content-md5(v2) or
# X-Image-Meta-Checksum(v1)
etag = response.info().getheader('etag', None)
if etag is None:
etag = response.info().getheader('content-md5', None)
if etag is None:
etag = response.info().getheader('x-image-meta-checksum', None)
# Verify checksum using ETag
checksum = checksum.hexdigest()
if etag is None:
msg = "No ETag found for comparison to checksum %(checksum)s"
logging.info(msg % {'checksum': checksum})
elif checksum != etag:
msg = 'ETag %(etag)s does not match computed md5sum %(checksum)s'
raise RetryableError(msg % {'checksum': checksum, 'etag': etag})
else:
msg = "Verified image checksum %(checksum)s"
logging.info(msg % {'checksum': checksum})
def _download_tarball_v1(sr_path, staging_path, image_id, glance_host,
glance_port, glance_use_ssl, extra_headers):
"""Download the tarball image from Glance v1 and extract it into the
staging area. Retry if there is any failure.
"""
if glance_use_ssl:
scheme = 'https'
else:
scheme = 'http'
endpoint = "%(scheme)s://%(glance_host)s:%(glance_port)d" % {
'scheme': scheme, 'glance_host': glance_host,
'glance_port': glance_port}
_download_tarball_by_url_v1(sr_path, staging_path, image_id,
endpoint, extra_headers)
def _download_tarball_by_url_v1(
sr_path, staging_path, image_id, glance_endpoint, extra_headers):
"""Download the tarball image from Glance v1 and extract it into the
staging area. Retry if there is any failure.
"""
url = "%(glance_endpoint)s/v1/images/%(image_id)s" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
logging.info("Downloading %s with glance v1 api" % url)
request = urllib2.Request(url, headers=extra_headers)
try:
_download_tarball_and_verify(request, staging_path)
except Exception:
logging.exception('Failed to retrieve %(url)s' % {'url': url})
raise
def _download_tarball_by_url_v2(
sr_path, staging_path, image_id, glance_endpoint, extra_headers):
"""Download the tarball image from Glance v2 and extract it into the
staging area. Retry if there is any failure.
"""
url = "%(glance_endpoint)s/v2/images/%(image_id)s/file" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
logging.debug("Downloading %s with glance v2 api" % url)
request = urllib2.Request(url, headers=extra_headers)
try:
_download_tarball_and_verify(request, staging_path)
except Exception:
logging.exception('Failed to retrieve %(url)s' % {'url': url})
raise
def _upload_tarball_v1(staging_path, image_id, glance_host, glance_port,
glance_use_ssl, extra_headers, properties):
if glance_use_ssl:
scheme = 'https'
else:
scheme = 'http'
url = '%s://%s:%s' % (scheme, glance_host, glance_port)
_upload_tarball_by_url_v1(staging_path, image_id, url,
extra_headers, properties)
def _upload_tarball_by_url_v1(staging_path, image_id, glance_endpoint,
extra_headers, properties):
"""Create a tarball of the image and then stream that into Glance v1
using chunked-transfer-encoded HTTP.
"""
# NOTE(johngarbutt) By default, there is no timeout.
# To ensure the script does not hang if we lose connection
# to glance, we add this socket timeout.
# This is here so there is no chance the timeout out has
# been adjusted by other library calls.
socket.setdefaulttimeout(SOCKET_TIMEOUT_SECONDS)
logging.debug("Uploading image %s with glance v1 api"
% image_id)
url = "%(glance_endpoint)s/v1/images/%(image_id)s" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
logging.info("Writing image data to %s" % url)
# NOTE(sdague): this is python 2.4, which means urlparse returns a
# tuple, not a named tuple.
# 0 - scheme
# 1 - host:port (aka netloc)
# 2 - path
parts = urlparse(url)
try:
conn = _create_connection(parts[0], parts[1])
except Exception, error: # noqa
logging.exception('Failed to connect %(url)s' % {'url': url})
raise RetryableError(error)
try:
validate_image_status_before_upload_v1(conn, url, extra_headers)
try:
# NOTE(sirp): httplib under python2.4 won't accept
# a file-like object to request
conn.putrequest('PUT', parts[2])
# NOTE(sirp): There is some confusion around OVF. Here's a summary
# of where we currently stand:
# 1. OVF as a container format is misnamed. We really should be
# using OVA since that is the name for the container format;
# OVF is the standard applied to the manifest file contained
# within.
# 2. We're currently uploading a vanilla tarball. In order to be
# OVF/OVA compliant, we'll need to embed a minimal OVF
# manifest as the first file.
# NOTE(dprince): In order to preserve existing Glance properties
# we set X-Glance-Registry-Purge-Props on this request.
headers = {
'content-type': 'application/octet-stream',
'transfer-encoding': 'chunked',
'x-image-meta-is-public': 'False',
'x-image-meta-status': 'queued',
'x-image-meta-disk-format': 'vhd',
'x-image-meta-container-format': 'ovf',
'x-glance-registry-purge-props': 'False'}
headers.update(**extra_headers)
for key, value in properties.items():
header_key = "x-image-meta-property-%s" % key.replace('_', '-')
headers[header_key] = str(value)
for header, value in headers.items():
conn.putheader(header, value)
conn.endheaders()
except Exception, error: # noqa
logging.exception('Failed to upload %(url)s' % {'url': url})
raise RetryableError(error)
callback_data = {'bytes_written': 0}
def send_chunked_transfer_encoded(chunk):
chunk_len = len(chunk)
callback_data['bytes_written'] += chunk_len
try:
conn.send("%x\r\n%s\r\n" % (chunk_len, chunk))
except Exception, error: # noqa
logging.exception('Failed to upload when sending chunks')
raise RetryableError(error)
compression_level = properties.get('xenapi_image_compression_level')
utils.create_tarball(
None, staging_path, callback=send_chunked_transfer_encoded,
compression_level=compression_level)
send_chunked_transfer_encoded('') # Chunked-Transfer terminator
bytes_written = callback_data['bytes_written']
logging.info("Wrote %d bytes to %s" % (bytes_written, url))
resp = conn.getresponse()
if resp.status == httplib.OK:
return
logging.error("Unexpected response while writing image data to %s: "
"Response Status: %i, Response body: %s"
% (url, resp.status, resp.read()))
check_resp_status_and_retry(resp, image_id, url)
finally:
conn.close()
def _update_image_meta_v2(conn, image_id, extra_headers, properties):
# NOTE(sirp): There is some confusion around OVF. Here's a summary
# of where we currently stand:
# 1. OVF as a container format is misnamed. We really should be
# using OVA since that is the name for the container format;
# OVF is the standard applied to the manifest file contained
# within.
# 2. We're currently uploading a vanilla tarball. In order to be
# OVF/OVA compliant, we'll need to embed a minimal OVF
# manifest as the first file.
body = [
{"path": "/container_format", "value": "ovf", "op": "add"},
{"path": "/disk_format", "value": "vhd", "op": "add"},
{"path": "/visibility", "value": "private", "op": "add"}]
headers = {'Content-Type': 'application/openstack-images-v2.1-json-patch'}
headers.update(**extra_headers)
for key, value in properties.items():
prop = {"path": "/%s" % key.replace('_', '-'),
"value": key,
"op": "add"}
body.append(prop)
body = json.dumps(body)
conn.request('PATCH', '/v2/images/%s' % image_id,
body=body, headers=headers)
resp = conn.getresponse()
resp.read()
if resp.status == httplib.OK:
return
logging.error("Image meta was not updated. Status: %s, Reason: %s" % (
resp.status, resp.reason))
def _upload_tarball_by_url_v2(staging_path, image_id, glance_endpoint,
extra_headers, properties):
"""Create a tarball of the image and then stream that into Glance v2
using chunked-transfer-encoded HTTP.
"""
# NOTE(johngarbutt) By default, there is no timeout.
# To ensure the script does not hang if we lose connection
# to glance, we add this socket timeout.
# This is here so there is no chance the timeout out has
# been adjusted by other library calls.
socket.setdefaulttimeout(SOCKET_TIMEOUT_SECONDS)
logging.debug("Uploading imaged %s with glance v2 api"
% image_id)
url = "%(glance_endpoint)s/v2/images/%(image_id)s/file" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
# NOTE(sdague): this is python 2.4, which means urlparse returns a
# tuple, not a named tuple.
# 0 - scheme
# 1 - host:port (aka netloc)
# 2 - path
parts = urlparse(url)
try:
conn = _create_connection(parts[0], parts[1])
except Exception, error: # noqa
raise RetryableError(error)
try:
_update_image_meta_v2(conn, image_id, extra_headers, properties)
validate_image_status_before_upload_v2(conn, url, extra_headers)
try:
conn.connect()
# NOTE(sirp): httplib under python2.4 won't accept
# a file-like object to request
conn.putrequest('PUT', parts[2])
headers = {
'content-type': 'application/octet-stream',
'transfer-encoding': 'chunked'}
headers.update(**extra_headers)
for header, value in headers.items():
conn.putheader(header, value)
conn.endheaders()
except Exception, error: # noqa
logging.exception('Failed to upload %(url)s' % {'url': url})
raise RetryableError(error)
callback_data = {'bytes_written': 0}
def send_chunked_transfer_encoded(chunk):
chunk_len = len(chunk)
callback_data['bytes_written'] += chunk_len
try:
conn.send("%x\r\n%s\r\n" % (chunk_len, chunk))
except Exception, error: # noqa
logging.exception('Failed to upload when sending chunks')
raise RetryableError(error)
compression_level = properties.get('xenapi_image_compression_level')
utils.create_tarball(
None, staging_path, callback=send_chunked_transfer_encoded,
compression_level=compression_level)
send_chunked_transfer_encoded('') # Chunked-Transfer terminator
bytes_written = callback_data['bytes_written']
logging.info("Wrote %d bytes to %s" % (bytes_written, url))
resp = conn.getresponse()
if resp.status == httplib.NO_CONTENT:
return
logging.error("Unexpected response while writing image data to %s: "
"Response Status: %i, Response body: %s"
% (url, resp.status, resp.read()))
check_resp_status_and_retry(resp, image_id, url)
finally:
conn.close()
def check_resp_status_and_retry(resp, image_id, url):
# Note(Jesse): This branch sorts errors into those that are permanent,
# those that are ephemeral, and those that are unexpected.
if resp.status in (httplib.BAD_REQUEST, # 400
httplib.UNAUTHORIZED, # 401
httplib.PAYMENT_REQUIRED, # 402
httplib.FORBIDDEN, # 403
httplib.NOT_FOUND, # 404
httplib.METHOD_NOT_ALLOWED, # 405
httplib.NOT_ACCEPTABLE, # 406
httplib.PROXY_AUTHENTICATION_REQUIRED, # 407
httplib.CONFLICT, # 409
httplib.GONE, # 410
httplib.LENGTH_REQUIRED, # 411
httplib.PRECONDITION_FAILED, # 412
httplib.REQUEST_ENTITY_TOO_LARGE, # 413
httplib.REQUEST_URI_TOO_LONG, # 414
httplib.UNSUPPORTED_MEDIA_TYPE, # 415
httplib.REQUESTED_RANGE_NOT_SATISFIABLE, # 416
httplib.EXPECTATION_FAILED, # 417
httplib.UNPROCESSABLE_ENTITY, # 422
httplib.LOCKED, # 423
httplib.FAILED_DEPENDENCY, # 424
httplib.UPGRADE_REQUIRED, # 426
httplib.NOT_IMPLEMENTED, # 501
httplib.HTTP_VERSION_NOT_SUPPORTED, # 505
httplib.NOT_EXTENDED, # 510
):
raise PluginError("Got Permanent Error response [%i] while "
"uploading image [%s] to glance [%s]"
% (resp.status, image_id, url))
# NOTE(nikhil): Only a sub-set of the 500 errors are retryable. We
# optimistically retry on 500 errors below.
elif resp.status in (httplib.REQUEST_TIMEOUT, # 408
httplib.INTERNAL_SERVER_ERROR, # 500
httplib.BAD_GATEWAY, # 502
httplib.SERVICE_UNAVAILABLE, # 503
httplib.GATEWAY_TIMEOUT, # 504
httplib.INSUFFICIENT_STORAGE, # 507
):
raise RetryableError("Got Ephemeral Error response [%i] while "
"uploading image [%s] to glance [%s]"
% (resp.status, image_id, url))
else:
# Note(Jesse): Assume unexpected errors are retryable. If you are
# seeing this error message, the error should probably be added
# to either the ephemeral or permanent error list.
raise RetryableError("Got Unexpected Error response [%i] while "
"uploading image [%s] to glance [%s]"
% (resp.status, image_id, url))
def validate_image_status_before_upload_v1(conn, url, extra_headers):
try:
parts = urlparse(url)
path = parts[2]
image_id = path.split('/')[-1]
# NOTE(nikhil): Attempt to determine if the Image has a status
# of 'queued'. Because data will continued to be sent to Glance
# until it has a chance to check the Image state, discover that
# it is not 'active' and send back a 409. Hence, the data will be
# unnecessarily buffered by Glance. This wastes time and bandwidth.
# LP bug #1202785
conn.request('HEAD', path, headers=extra_headers)
head_resp = conn.getresponse()
# NOTE(nikhil): read the response to re-use the conn object.
body_data = head_resp.read(8192)
if len(body_data) > 8:
err_msg = ('Cannot upload data for image %(image_id)s as the '
'HEAD call had more than 8192 bytes of data in '
'the response body.' % {'image_id': image_id})
raise PluginError("Got Permanent Error while uploading image "
"[%s] to glance [%s]. "
"Message: %s" % (image_id, url,
err_msg))
else:
head_resp.read()
except Exception, error: # noqa
logging.exception('Failed to HEAD the image %(image_id)s while '
'checking image status before attempting to '
'upload %(url)s' % {'image_id': image_id,
'url': url})
raise RetryableError(error)
if head_resp.status != httplib.OK:
logging.error("Unexpected response while doing a HEAD call "
"to image %s , url = %s , Response Status: "
"%i" % (image_id, url, head_resp.status))
check_resp_status_and_retry(head_resp, image_id, url)
else:
image_status = head_resp.getheader('x-image-meta-status')
if image_status not in ('queued', ):
err_msg = ('Cannot upload data for image %(image_id)s as the '
'image status is %(image_status)s' %
{'image_id': image_id, 'image_status': image_status})
logging.exception(err_msg)
raise PluginError("Got Permanent Error while uploading image "
"[%s] to glance [%s]. "
"Message: %s" % (image_id, url,
err_msg))
else:
logging.info('Found image %(image_id)s in status '
'%(image_status)s. Attempting to '
'upload.' % {'image_id': image_id,
'image_status': image_status})
def validate_image_status_before_upload_v2(conn, url, extra_headers):
try:
parts = urlparse(url)
path = parts[2]
image_id = path.split('/')[-2]
# NOTE(nikhil): Attempt to determine if the Image has a status
# of 'queued'. Because data will continued to be sent to Glance
# until it has a chance to check the Image state, discover that
# it is not 'active' and send back a 409. Hence, the data will be
# unnecessarily buffered by Glance. This wastes time and bandwidth.
# LP bug #1202785
conn.request('GET', '/v2/images/%s' % image_id, headers=extra_headers)
get_resp = conn.getresponse()
except Exception, error: # noqa
logging.exception('Failed to GET the image %(image_id)s while '
'checking image status before attempting to '
'upload %(url)s' % {'image_id': image_id,
'url': url})
raise RetryableError(error)
if get_resp.status != httplib.OK:
logging.error("Unexpected response while doing a GET call "
"to image %s , url = %s , Response Status: "
"%i" % (image_id, url, get_resp.status))
check_resp_status_and_retry(get_resp, image_id, url)
else:
body = json.loads(get_resp.read())
image_status = body['status']
if image_status not in ('queued', ):
err_msg = ('Cannot upload data for image %(image_id)s as the '
'image status is %(image_status)s' %
{'image_id': image_id, 'image_status': image_status})
logging.exception(err_msg)
raise PluginError("Got Permanent Error while uploading image "
"[%s] to glance [%s]. "
"Message: %s" % (image_id, url,
err_msg))
else:
logging.info('Found image %(image_id)s in status '
'%(image_status)s. Attempting to '
'upload.' % {'image_id': image_id,
'image_status': image_status})
get_resp.read()
def download_vhd2(session, image_id, endpoint,
uuid_stack, sr_path, extra_headers, api_version=1):
"""Download an image from Glance v2, unbundle it, and then deposit the
VHDs into the storage repository.
"""
staging_path = utils.make_staging_area(sr_path)
try:
# Download tarball into staging area and extract it
# TODO(mfedosin): remove this check when v1 is deprecated.
if api_version == 1:
_download_tarball_by_url_v1(
sr_path, staging_path, image_id,
endpoint, extra_headers)
else:
_download_tarball_by_url_v2(
sr_path, staging_path, image_id,
endpoint, extra_headers)
# Move the VHDs from the staging area into the storage repository
return utils.import_vhds(sr_path, staging_path, uuid_stack)
finally:
utils.cleanup_staging_area(staging_path)
def upload_vhd2(session, vdi_uuids, image_id, endpoint, sr_path,
extra_headers, properties, api_version=1):
"""Bundle the VHDs comprising an image and then stream them into
Glance.
"""
staging_path = utils.make_staging_area(sr_path)
try:
utils.prepare_staging_area(sr_path, staging_path, vdi_uuids)
# TODO(mfedosin): remove this check when v1 is deprecated.
if api_version == 1:
_upload_tarball_by_url_v1(staging_path, image_id,
endpoint, extra_headers, properties)
else:
_upload_tarball_by_url_v2(staging_path, image_id,
endpoint, extra_headers, properties)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == '__main__':
utils.register_plugin_calls(download_vhd2, upload_vhd2)

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/glance Symbolic link
View File

@ -0,0 +1 @@
glance.py

632
plugins/xenserver/xenapi/etc/xapi.d/plugins/glance.py Executable file
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@ -0,0 +1,632 @@
#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# Copyright (c) 2010 Citrix Systems, Inc.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Handle the uploading and downloading of images via Glance."""
try:
import httplib
except ImportError:
from six.moves import http_client as httplib
try:
import json
except ImportError:
import simplejson as json
import md5 # noqa
import socket
import urllib2
from urlparse import urlparse
import pluginlib_nova
import utils
pluginlib_nova.configure_logging('glance')
logging = pluginlib_nova.logging
PluginError = pluginlib_nova.PluginError
SOCKET_TIMEOUT_SECONDS = 90
class RetryableError(Exception):
pass
def _create_connection(scheme, netloc):
if scheme == 'https':
conn = httplib.HTTPSConnection(netloc)
else:
conn = httplib.HTTPConnection(netloc)
conn.connect()
return conn
def _download_tarball_and_verify(request, staging_path):
# NOTE(johngarbutt) By default, there is no timeout.
# To ensure the script does not hang if we lose connection
# to glance, we add this socket timeout.
# This is here so there is no chance the timeout out has
# been adjusted by other library calls.
socket.setdefaulttimeout(SOCKET_TIMEOUT_SECONDS)
try:
response = urllib2.urlopen(request)
except urllib2.HTTPError, error: # noqa
raise RetryableError(error)
except urllib2.URLError, error: # noqa
raise RetryableError(error)
except httplib.HTTPException, error: # noqa
# httplib.HTTPException and derivatives (BadStatusLine in particular)
# don't have a useful __repr__ or __str__
raise RetryableError('%s: %s' % (error.__class__.__name__, error))
url = request.get_full_url()
logging.info("Reading image data from %s" % url)
callback_data = {'bytes_read': 0}
checksum = md5.new()
def update_md5(chunk):
callback_data['bytes_read'] += len(chunk)
checksum.update(chunk)
try:
try:
utils.extract_tarball(response, staging_path, callback=update_md5)
except Exception, error: # noqa
raise RetryableError(error)
finally:
bytes_read = callback_data['bytes_read']
logging.info("Read %d bytes from %s", bytes_read, url)
# Use ETag if available, otherwise content-md5(v2) or
# X-Image-Meta-Checksum(v1)
etag = response.info().getheader('etag', None)
if etag is None:
etag = response.info().getheader('content-md5', None)
if etag is None:
etag = response.info().getheader('x-image-meta-checksum', None)
# Verify checksum using ETag
checksum = checksum.hexdigest()
if etag is None:
msg = "No ETag found for comparison to checksum %(checksum)s"
logging.info(msg % {'checksum': checksum})
elif checksum != etag:
msg = 'ETag %(etag)s does not match computed md5sum %(checksum)s'
raise RetryableError(msg % {'checksum': checksum, 'etag': etag})
else:
msg = "Verified image checksum %(checksum)s"
logging.info(msg % {'checksum': checksum})
def _download_tarball_v1(sr_path, staging_path, image_id, glance_host,
glance_port, glance_use_ssl, extra_headers):
"""Download the tarball image from Glance v1 and extract it into the
staging area. Retry if there is any failure.
"""
if glance_use_ssl:
scheme = 'https'
else:
scheme = 'http'
endpoint = "%(scheme)s://%(glance_host)s:%(glance_port)d" % {
'scheme': scheme, 'glance_host': glance_host,
'glance_port': glance_port}
_download_tarball_by_url_v1(sr_path, staging_path, image_id,
endpoint, extra_headers)
def _download_tarball_by_url_v1(
sr_path, staging_path, image_id, glance_endpoint, extra_headers):
"""Download the tarball image from Glance v1 and extract it into the
staging area. Retry if there is any failure.
"""
url = "%(glance_endpoint)s/v1/images/%(image_id)s" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
logging.info("Downloading %s with glance v1 api" % url)
request = urllib2.Request(url, headers=extra_headers)
try:
_download_tarball_and_verify(request, staging_path)
except Exception:
logging.exception('Failed to retrieve %(url)s' % {'url': url})
raise
def _download_tarball_by_url_v2(
sr_path, staging_path, image_id, glance_endpoint, extra_headers):
"""Download the tarball image from Glance v2 and extract it into the
staging area. Retry if there is any failure.
"""
url = "%(glance_endpoint)s/v2/images/%(image_id)s/file" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
logging.debug("Downloading %s with glance v2 api" % url)
request = urllib2.Request(url, headers=extra_headers)
try:
_download_tarball_and_verify(request, staging_path)
except Exception:
logging.exception('Failed to retrieve %(url)s' % {'url': url})
raise
def _upload_tarball_v1(staging_path, image_id, glance_host, glance_port,
glance_use_ssl, extra_headers, properties):
if glance_use_ssl:
scheme = 'https'
else:
scheme = 'http'
url = '%s://%s:%s' % (scheme, glance_host, glance_port)
_upload_tarball_by_url_v1(staging_path, image_id, url,
extra_headers, properties)
def _upload_tarball_by_url_v1(staging_path, image_id, glance_endpoint,
extra_headers, properties):
"""Create a tarball of the image and then stream that into Glance v1
using chunked-transfer-encoded HTTP.
"""
# NOTE(johngarbutt) By default, there is no timeout.
# To ensure the script does not hang if we lose connection
# to glance, we add this socket timeout.
# This is here so there is no chance the timeout out has
# been adjusted by other library calls.
socket.setdefaulttimeout(SOCKET_TIMEOUT_SECONDS)
logging.debug("Uploading image %s with glance v1 api"
% image_id)
url = "%(glance_endpoint)s/v1/images/%(image_id)s" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
logging.info("Writing image data to %s" % url)
# NOTE(sdague): this is python 2.4, which means urlparse returns a
# tuple, not a named tuple.
# 0 - scheme
# 1 - host:port (aka netloc)
# 2 - path
parts = urlparse(url)
try:
conn = _create_connection(parts[0], parts[1])
except Exception, error: # noqa
logging.exception('Failed to connect %(url)s' % {'url': url})
raise RetryableError(error)
try:
validate_image_status_before_upload_v1(conn, url, extra_headers)
try:
# NOTE(sirp): httplib under python2.4 won't accept
# a file-like object to request
conn.putrequest('PUT', parts[2])
# NOTE(sirp): There is some confusion around OVF. Here's a summary
# of where we currently stand:
# 1. OVF as a container format is misnamed. We really should be
# using OVA since that is the name for the container format;
# OVF is the standard applied to the manifest file contained
# within.
# 2. We're currently uploading a vanilla tarball. In order to be
# OVF/OVA compliant, we'll need to embed a minimal OVF
# manifest as the first file.
# NOTE(dprince): In order to preserve existing Glance properties
# we set X-Glance-Registry-Purge-Props on this request.
headers = {
'content-type': 'application/octet-stream',
'transfer-encoding': 'chunked',
'x-image-meta-is-public': 'False',
'x-image-meta-status': 'queued',
'x-image-meta-disk-format': 'vhd',
'x-image-meta-container-format': 'ovf',
'x-glance-registry-purge-props': 'False'}
headers.update(**extra_headers)
for key, value in properties.items():
header_key = "x-image-meta-property-%s" % key.replace('_', '-')
headers[header_key] = str(value)
for header, value in headers.items():
conn.putheader(header, value)
conn.endheaders()
except Exception, error: # noqa
logging.exception('Failed to upload %(url)s' % {'url': url})
raise RetryableError(error)
callback_data = {'bytes_written': 0}
def send_chunked_transfer_encoded(chunk):
chunk_len = len(chunk)
callback_data['bytes_written'] += chunk_len
try:
conn.send("%x\r\n%s\r\n" % (chunk_len, chunk))
except Exception, error: # noqa
logging.exception('Failed to upload when sending chunks')
raise RetryableError(error)
compression_level = properties.get('xenapi_image_compression_level')
utils.create_tarball(
None, staging_path, callback=send_chunked_transfer_encoded,
compression_level=compression_level)
send_chunked_transfer_encoded('') # Chunked-Transfer terminator
bytes_written = callback_data['bytes_written']
logging.info("Wrote %d bytes to %s" % (bytes_written, url))
resp = conn.getresponse()
if resp.status == httplib.OK:
return
logging.error("Unexpected response while writing image data to %s: "
"Response Status: %i, Response body: %s"
% (url, resp.status, resp.read()))
check_resp_status_and_retry(resp, image_id, url)
finally:
conn.close()
def _update_image_meta_v2(conn, image_id, extra_headers, properties):
# NOTE(sirp): There is some confusion around OVF. Here's a summary
# of where we currently stand:
# 1. OVF as a container format is misnamed. We really should be
# using OVA since that is the name for the container format;
# OVF is the standard applied to the manifest file contained
# within.
# 2. We're currently uploading a vanilla tarball. In order to be
# OVF/OVA compliant, we'll need to embed a minimal OVF
# manifest as the first file.
body = [
{"path": "/container_format", "value": "ovf", "op": "add"},
{"path": "/disk_format", "value": "vhd", "op": "add"},
{"path": "/visibility", "value": "private", "op": "add"}]
headers = {'Content-Type': 'application/openstack-images-v2.1-json-patch'}
headers.update(**extra_headers)
for key, value in properties.items():
prop = {"path": "/%s" % key.replace('_', '-'),
"value": key,
"op": "add"}
body.append(prop)
body = json.dumps(body)
conn.request('PATCH', '/v2/images/%s' % image_id,
body=body, headers=headers)
resp = conn.getresponse()
resp.read()
if resp.status == httplib.OK:
return
logging.error("Image meta was not updated. Status: %s, Reason: %s" % (
resp.status, resp.reason))
def _upload_tarball_by_url_v2(staging_path, image_id, glance_endpoint,
extra_headers, properties):
"""Create a tarball of the image and then stream that into Glance v2
using chunked-transfer-encoded HTTP.
"""
# NOTE(johngarbutt) By default, there is no timeout.
# To ensure the script does not hang if we lose connection
# to glance, we add this socket timeout.
# This is here so there is no chance the timeout out has
# been adjusted by other library calls.
socket.setdefaulttimeout(SOCKET_TIMEOUT_SECONDS)
logging.debug("Uploading imaged %s with glance v2 api"
% image_id)
url = "%(glance_endpoint)s/v2/images/%(image_id)s/file" % {
'glance_endpoint': glance_endpoint,
'image_id': image_id}
# NOTE(sdague): this is python 2.4, which means urlparse returns a
# tuple, not a named tuple.
# 0 - scheme
# 1 - host:port (aka netloc)
# 2 - path
parts = urlparse(url)
try:
conn = _create_connection(parts[0], parts[1])
except Exception, error: # noqa
raise RetryableError(error)
try:
_update_image_meta_v2(conn, image_id, extra_headers, properties)
validate_image_status_before_upload_v2(conn, url, extra_headers)
try:
conn.connect()
# NOTE(sirp): httplib under python2.4 won't accept
# a file-like object to request
conn.putrequest('PUT', parts[2])
headers = {
'content-type': 'application/octet-stream',
'transfer-encoding': 'chunked'}
headers.update(**extra_headers)
for header, value in headers.items():
conn.putheader(header, value)
conn.endheaders()
except Exception, error: # noqa
logging.exception('Failed to upload %(url)s' % {'url': url})
raise RetryableError(error)
callback_data = {'bytes_written': 0}
def send_chunked_transfer_encoded(chunk):
chunk_len = len(chunk)
callback_data['bytes_written'] += chunk_len
try:
conn.send("%x\r\n%s\r\n" % (chunk_len, chunk))
except Exception, error: # noqa
logging.exception('Failed to upload when sending chunks')
raise RetryableError(error)
compression_level = properties.get('xenapi_image_compression_level')
utils.create_tarball(
None, staging_path, callback=send_chunked_transfer_encoded,
compression_level=compression_level)
send_chunked_transfer_encoded('') # Chunked-Transfer terminator
bytes_written = callback_data['bytes_written']
logging.info("Wrote %d bytes to %s" % (bytes_written, url))
resp = conn.getresponse()
if resp.status == httplib.NO_CONTENT:
return
logging.error("Unexpected response while writing image data to %s: "
"Response Status: %i, Response body: %s"
% (url, resp.status, resp.read()))
check_resp_status_and_retry(resp, image_id, url)
finally:
conn.close()
def check_resp_status_and_retry(resp, image_id, url):
# Note(Jesse): This branch sorts errors into those that are permanent,
# those that are ephemeral, and those that are unexpected.
if resp.status in (httplib.BAD_REQUEST, # 400
httplib.UNAUTHORIZED, # 401
httplib.PAYMENT_REQUIRED, # 402
httplib.FORBIDDEN, # 403
httplib.NOT_FOUND, # 404
httplib.METHOD_NOT_ALLOWED, # 405
httplib.NOT_ACCEPTABLE, # 406
httplib.PROXY_AUTHENTICATION_REQUIRED, # 407
httplib.CONFLICT, # 409
httplib.GONE, # 410
httplib.LENGTH_REQUIRED, # 411
httplib.PRECONDITION_FAILED, # 412
httplib.REQUEST_ENTITY_TOO_LARGE, # 413
httplib.REQUEST_URI_TOO_LONG, # 414
httplib.UNSUPPORTED_MEDIA_TYPE, # 415
httplib.REQUESTED_RANGE_NOT_SATISFIABLE, # 416
httplib.EXPECTATION_FAILED, # 417
httplib.UNPROCESSABLE_ENTITY, # 422
httplib.LOCKED, # 423
httplib.FAILED_DEPENDENCY, # 424
httplib.UPGRADE_REQUIRED, # 426
httplib.NOT_IMPLEMENTED, # 501
httplib.HTTP_VERSION_NOT_SUPPORTED, # 505
httplib.NOT_EXTENDED, # 510
):
raise PluginError("Got Permanent Error response [%i] while "
"uploading image [%s] to glance [%s]"
% (resp.status, image_id, url))
# NOTE(nikhil): Only a sub-set of the 500 errors are retryable. We
# optimistically retry on 500 errors below.
elif resp.status in (httplib.REQUEST_TIMEOUT, # 408
httplib.INTERNAL_SERVER_ERROR, # 500
httplib.BAD_GATEWAY, # 502
httplib.SERVICE_UNAVAILABLE, # 503
httplib.GATEWAY_TIMEOUT, # 504
httplib.INSUFFICIENT_STORAGE, # 507
):
raise RetryableError("Got Ephemeral Error response [%i] while "
"uploading image [%s] to glance [%s]"
% (resp.status, image_id, url))
else:
# Note(Jesse): Assume unexpected errors are retryable. If you are
# seeing this error message, the error should probably be added
# to either the ephemeral or permanent error list.
raise RetryableError("Got Unexpected Error response [%i] while "
"uploading image [%s] to glance [%s]"
% (resp.status, image_id, url))
def validate_image_status_before_upload_v1(conn, url, extra_headers):
try:
parts = urlparse(url)
path = parts[2]
image_id = path.split('/')[-1]
# NOTE(nikhil): Attempt to determine if the Image has a status
# of 'queued'. Because data will continued to be sent to Glance
# until it has a chance to check the Image state, discover that
# it is not 'active' and send back a 409. Hence, the data will be
# unnecessarily buffered by Glance. This wastes time and bandwidth.
# LP bug #1202785
conn.request('HEAD', path, headers=extra_headers)
head_resp = conn.getresponse()
# NOTE(nikhil): read the response to re-use the conn object.
body_data = head_resp.read(8192)
if len(body_data) > 8:
err_msg = ('Cannot upload data for image %(image_id)s as the '
'HEAD call had more than 8192 bytes of data in '
'the response body.' % {'image_id': image_id})
raise PluginError("Got Permanent Error while uploading image "
"[%s] to glance [%s]. "
"Message: %s" % (image_id, url,
err_msg))
else:
head_resp.read()
except Exception, error: # noqa
logging.exception('Failed to HEAD the image %(image_id)s while '
'checking image status before attempting to '
'upload %(url)s' % {'image_id': image_id,
'url': url})
raise RetryableError(error)
if head_resp.status != httplib.OK:
logging.error("Unexpected response while doing a HEAD call "
"to image %s , url = %s , Response Status: "
"%i" % (image_id, url, head_resp.status))
check_resp_status_and_retry(head_resp, image_id, url)
else:
image_status = head_resp.getheader('x-image-meta-status')
if image_status not in ('queued', ):
err_msg = ('Cannot upload data for image %(image_id)s as the '
'image status is %(image_status)s' %
{'image_id': image_id, 'image_status': image_status})
logging.exception(err_msg)
raise PluginError("Got Permanent Error while uploading image "
"[%s] to glance [%s]. "
"Message: %s" % (image_id, url,
err_msg))
else:
logging.info('Found image %(image_id)s in status '
'%(image_status)s. Attempting to '
'upload.' % {'image_id': image_id,
'image_status': image_status})
def validate_image_status_before_upload_v2(conn, url, extra_headers):
try:
parts = urlparse(url)
path = parts[2]
image_id = path.split('/')[-2]
# NOTE(nikhil): Attempt to determine if the Image has a status
# of 'queued'. Because data will continued to be sent to Glance
# until it has a chance to check the Image state, discover that
# it is not 'active' and send back a 409. Hence, the data will be
# unnecessarily buffered by Glance. This wastes time and bandwidth.
# LP bug #1202785
conn.request('GET', '/v2/images/%s' % image_id, headers=extra_headers)
get_resp = conn.getresponse()
except Exception, error: # noqa
logging.exception('Failed to GET the image %(image_id)s while '
'checking image status before attempting to '
'upload %(url)s' % {'image_id': image_id,
'url': url})
raise RetryableError(error)
if get_resp.status != httplib.OK:
logging.error("Unexpected response while doing a GET call "
"to image %s , url = %s , Response Status: "
"%i" % (image_id, url, get_resp.status))
check_resp_status_and_retry(get_resp, image_id, url)
else:
body = json.loads(get_resp.read())
image_status = body['status']
if image_status not in ('queued', ):
err_msg = ('Cannot upload data for image %(image_id)s as the '
'image status is %(image_status)s' %
{'image_id': image_id, 'image_status': image_status})
logging.exception(err_msg)
raise PluginError("Got Permanent Error while uploading image "
"[%s] to glance [%s]. "
"Message: %s" % (image_id, url,
err_msg))
else:
logging.info('Found image %(image_id)s in status '
'%(image_status)s. Attempting to '
'upload.' % {'image_id': image_id,
'image_status': image_status})
get_resp.read()
def download_vhd2(session, image_id, endpoint,
uuid_stack, sr_path, extra_headers, api_version=1):
"""Download an image from Glance v2, unbundle it, and then deposit the
VHDs into the storage repository.
"""
staging_path = utils.make_staging_area(sr_path)
try:
# Download tarball into staging area and extract it
# TODO(mfedosin): remove this check when v1 is deprecated.
if api_version == 1:
_download_tarball_by_url_v1(
sr_path, staging_path, image_id,
endpoint, extra_headers)
else:
_download_tarball_by_url_v2(
sr_path, staging_path, image_id,
endpoint, extra_headers)
# Move the VHDs from the staging area into the storage repository
return utils.import_vhds(sr_path, staging_path, uuid_stack)
finally:
utils.cleanup_staging_area(staging_path)
def upload_vhd2(session, vdi_uuids, image_id, endpoint, sr_path,
extra_headers, properties, api_version=1):
"""Bundle the VHDs comprising an image and then stream them into
Glance.
"""
staging_path = utils.make_staging_area(sr_path)
try:
utils.prepare_staging_area(sr_path, staging_path, vdi_uuids)
# TODO(mfedosin): remove this check when v1 is deprecated.
if api_version == 1:
_upload_tarball_by_url_v1(staging_path, image_id,
endpoint, extra_headers, properties)
else:
_upload_tarball_by_url_v2(staging_path, image_id,
endpoint, extra_headers, properties)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == '__main__':
utils.register_plugin_calls(download_vhd2, upload_vhd2)

140
plugins/xenserver/xenapi/etc/xapi.d/plugins/ipxe
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@ -1,140 +0,0 @@
#!/usr/bin/env python
# Copyright (c) 2013 OpenStack Foundation
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Inject network configuration into iPXE ISO for boot."""
import logging
import os
import shutil
import utils
# FIXME(sirp): should this use pluginlib from 5.6?
import pluginlib_nova
pluginlib_nova.configure_logging('ipxe')
ISOLINUX_CFG = """SAY iPXE ISO boot image
TIMEOUT 30
DEFAULT ipxe.krn
LABEL ipxe.krn
KERNEL ipxe.krn
INITRD netcfg.ipxe
"""
NETCFG_IPXE = """#!ipxe
:start
imgfree
ifclose net0
set net0/ip %(ip_address)s
set net0/netmask %(netmask)s
set net0/gateway %(gateway)s
set dns %(dns)s
ifopen net0
goto menu
:menu
chain %(boot_menu_url)s
goto boot
:boot
sanboot --no-describe --drive 0x80
"""
def _write_file(filename, data):
# If the ISO was tampered with such that the destination is a symlink,
# that could allow a malicious user to write to protected areas of the
# dom0 filesystem. /HT to comstud for pointing this out.
#
# Short-term, checking that the destination is not a symlink should be
# sufficient.
#
# Long-term, we probably want to perform all file manipulations within a
# chroot jail to be extra safe.
if os.path.islink(filename):
raise RuntimeError('SECURITY: Cannot write to symlinked destination')
logging.debug("Writing to file '%s'" % filename)
f = open(filename, 'w')
try:
f.write(data)
finally:
f.close()
def _unbundle_iso(sr_path, filename, path):
logging.debug("Unbundling ISO '%s'" % filename)
read_only_path = utils.make_staging_area(sr_path)
try:
utils.run_command(['mount', '-o', 'loop', filename, read_only_path])
try:
shutil.copytree(read_only_path, path)
finally:
utils.run_command(['umount', read_only_path])
finally:
utils.cleanup_staging_area(read_only_path)
def _create_iso(mkisofs_cmd, filename, path):
logging.debug("Creating ISO '%s'..." % filename)
orig_dir = os.getcwd()
os.chdir(path)
try:
utils.run_command([mkisofs_cmd, '-quiet', '-l', '-o', filename,
'-c', 'boot.cat', '-b', 'isolinux.bin',
'-no-emul-boot', '-boot-load-size', '4',
'-boot-info-table', '.'])
finally:
os.chdir(orig_dir)
def inject(session, sr_path, vdi_uuid, boot_menu_url, ip_address, netmask,
gateway, dns, mkisofs_cmd):
iso_filename = '%s.img' % os.path.join(sr_path, 'iso', vdi_uuid)
# Create staging area so we have a unique path but remove it since
# shutil.copytree will recreate it
staging_path = utils.make_staging_area(sr_path)
utils.cleanup_staging_area(staging_path)
try:
_unbundle_iso(sr_path, iso_filename, staging_path)
# Write Configs
_write_file(os.path.join(staging_path, 'netcfg.ipxe'),
NETCFG_IPXE % {"ip_address": ip_address,
"netmask": netmask,
"gateway": gateway,
"dns": dns,
"boot_menu_url": boot_menu_url})
_write_file(os.path.join(staging_path, 'isolinux.cfg'),
ISOLINUX_CFG)
_create_iso(mkisofs_cmd, iso_filename, staging_path)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == "__main__":
utils.register_plugin_calls(inject)

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/ipxe Symbolic link
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ipxe.py

140
plugins/xenserver/xenapi/etc/xapi.d/plugins/ipxe.py Executable file
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#!/usr/bin/env python
# Copyright (c) 2013 OpenStack Foundation
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Inject network configuration into iPXE ISO for boot."""
import logging
import os
import shutil
import utils
# FIXME(sirp): should this use pluginlib from 5.6?
import pluginlib_nova
pluginlib_nova.configure_logging('ipxe')
ISOLINUX_CFG = """SAY iPXE ISO boot image
TIMEOUT 30
DEFAULT ipxe.krn
LABEL ipxe.krn
KERNEL ipxe.krn
INITRD netcfg.ipxe
"""
NETCFG_IPXE = """#!ipxe
:start
imgfree
ifclose net0
set net0/ip %(ip_address)s
set net0/netmask %(netmask)s
set net0/gateway %(gateway)s
set dns %(dns)s
ifopen net0
goto menu
:menu
chain %(boot_menu_url)s
goto boot
:boot
sanboot --no-describe --drive 0x80
"""
def _write_file(filename, data):
# If the ISO was tampered with such that the destination is a symlink,
# that could allow a malicious user to write to protected areas of the
# dom0 filesystem. /HT to comstud for pointing this out.
#
# Short-term, checking that the destination is not a symlink should be
# sufficient.
#
# Long-term, we probably want to perform all file manipulations within a
# chroot jail to be extra safe.
if os.path.islink(filename):
raise RuntimeError('SECURITY: Cannot write to symlinked destination')
logging.debug("Writing to file '%s'" % filename)
f = open(filename, 'w')
try:
f.write(data)
finally:
f.close()
def _unbundle_iso(sr_path, filename, path):
logging.debug("Unbundling ISO '%s'" % filename)
read_only_path = utils.make_staging_area(sr_path)
try:
utils.run_command(['mount', '-o', 'loop', filename, read_only_path])
try:
shutil.copytree(read_only_path, path)
finally:
utils.run_command(['umount', read_only_path])
finally:
utils.cleanup_staging_area(read_only_path)
def _create_iso(mkisofs_cmd, filename, path):
logging.debug("Creating ISO '%s'..." % filename)
orig_dir = os.getcwd()
os.chdir(path)
try:
utils.run_command([mkisofs_cmd, '-quiet', '-l', '-o', filename,
'-c', 'boot.cat', '-b', 'isolinux.bin',
'-no-emul-boot', '-boot-load-size', '4',
'-boot-info-table', '.'])
finally:
os.chdir(orig_dir)
def inject(session, sr_path, vdi_uuid, boot_menu_url, ip_address, netmask,
gateway, dns, mkisofs_cmd):
iso_filename = '%s.img' % os.path.join(sr_path, 'iso', vdi_uuid)
# Create staging area so we have a unique path but remove it since
# shutil.copytree will recreate it
staging_path = utils.make_staging_area(sr_path)
utils.cleanup_staging_area(staging_path)
try:
_unbundle_iso(sr_path, iso_filename, staging_path)
# Write Configs
_write_file(os.path.join(staging_path, 'netcfg.ipxe'),
NETCFG_IPXE % {"ip_address": ip_address,
"netmask": netmask,
"gateway": gateway,
"dns": dns,
"boot_menu_url": boot_menu_url})
_write_file(os.path.join(staging_path, 'isolinux.cfg'),
ISOLINUX_CFG)
_create_iso(mkisofs_cmd, iso_filename, staging_path)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == "__main__":
utils.register_plugin_calls(inject)

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plugins/xenserver/xenapi/etc/xapi.d/plugins/kernel
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@ -1,143 +0,0 @@
#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# Copyright (c) 2010 Citrix Systems, Inc.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Handle the manipulation of kernel images."""
import errno
import os
import shutil
import XenAPIPlugin
import pluginlib_nova
pluginlib_nova.configure_logging('kernel')
logging = pluginlib_nova.logging
exists = pluginlib_nova.exists
optional = pluginlib_nova.optional
with_vdi_in_dom0 = pluginlib_nova.with_vdi_in_dom0
KERNEL_DIR = '/boot/guest'
def _copy_vdi(dest, copy_args):
vdi_uuid = copy_args['vdi_uuid']
vdi_size = copy_args['vdi_size']
cached_image = copy_args['cached-image']
logging.debug("copying kernel/ramdisk file from %s to /boot/guest/%s",
dest, vdi_uuid)
filename = KERNEL_DIR + '/' + vdi_uuid
# Make sure KERNEL_DIR exists, otherwise create it
if not os.path.isdir(KERNEL_DIR):
logging.debug("Creating directory %s", KERNEL_DIR)
os.makedirs(KERNEL_DIR)
# Read data from /dev/ and write into a file on /boot/guest
of = open(filename, 'wb')
f = open(dest, 'rb')
# Copy only vdi_size bytes
data = f.read(vdi_size)
of.write(data)
if cached_image:
# Create a cache file. If caching is enabled, kernel images do not have
# to be fetched from glance.
cached_image = KERNEL_DIR + '/' + cached_image
logging.debug("copying kernel/ramdisk file from %s to /boot/guest/%s",
dest, cached_image)
cache_file = open(cached_image, 'wb')
cache_file.write(data)
cache_file.close()
logging.debug("Done. Filename: %s", cached_image)
f.close()
of.close()
logging.debug("Done. Filename: %s", filename)
return filename
def copy_vdi(session, args):
vdi = exists(args, 'vdi-ref')
size = exists(args, 'image-size')
cached_image = optional(args, 'cached-image')
# Use the uuid as a filename
vdi_uuid = session.xenapi.VDI.get_uuid(vdi)
copy_args = {'vdi_uuid': vdi_uuid,
'vdi_size': int(size),
'cached-image': cached_image}
filename = with_vdi_in_dom0(session, vdi, False,
lambda dev:
_copy_vdi('/dev/%s' % dev, copy_args))
return filename
def create_kernel_ramdisk(session, args):
"""Creates a copy of the kernel/ramdisk image if it is present in the
cache. If the image is not present in the cache, it does nothing.
"""
cached_image = exists(args, 'cached-image')
image_uuid = exists(args, 'new-image-uuid')
cached_image_filename = KERNEL_DIR + '/' + cached_image
filename = KERNEL_DIR + '/' + image_uuid
if os.path.isfile(cached_image_filename):
shutil.copyfile(cached_image_filename, filename)
logging.debug("Done. Filename: %s", filename)
else:
filename = ""
logging.debug("Cached kernel/ramdisk image not found")
return filename
def _remove_file(filepath):
try:
os.remove(filepath)
except OSError, exc: # noqa
if exc.errno != errno.ENOENT:
raise
def remove_kernel_ramdisk(session, args):
"""Removes kernel and/or ramdisk from dom0's file system."""
kernel_file = optional(args, 'kernel-file')
ramdisk_file = optional(args, 'ramdisk-file')
if kernel_file:
_remove_file(kernel_file)
if ramdisk_file:
_remove_file(ramdisk_file)
return "ok"
if __name__ == '__main__':
XenAPIPlugin.dispatch({'copy_vdi': copy_vdi,
'create_kernel_ramdisk': create_kernel_ramdisk,
'remove_kernel_ramdisk': remove_kernel_ramdisk})

1
plugins/xenserver/xenapi/etc/xapi.d/plugins/kernel Symbolic link
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kernel.py

143
plugins/xenserver/xenapi/etc/xapi.d/plugins/kernel.py Executable file
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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# Copyright (c) 2010 Citrix Systems, Inc.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
"""Handle the manipulation of kernel images."""
import errno
import os
import shutil
import XenAPIPlugin
import pluginlib_nova
pluginlib_nova.configure_logging('kernel')
logging = pluginlib_nova.logging
exists = pluginlib_nova.exists
optional = pluginlib_nova.optional
with_vdi_in_dom0 = pluginlib_nova.with_vdi_in_dom0
KERNEL_DIR = '/boot/guest'
def _copy_vdi(dest, copy_args):
vdi_uuid = copy_args['vdi_uuid']
vdi_size = copy_args['vdi_size']
cached_image = copy_args['cached-image']
logging.debug("copying kernel/ramdisk file from %s to /boot/guest/%s",
dest, vdi_uuid)
filename = KERNEL_DIR + '/' + vdi_uuid
# Make sure KERNEL_DIR exists, otherwise create it
if not os.path.isdir(KERNEL_DIR):
logging.debug("Creating directory %s", KERNEL_DIR)
os.makedirs(KERNEL_DIR)
# Read data from /dev/ and write into a file on /boot/guest
of = open(filename, 'wb')
f = open(dest, 'rb')
# Copy only vdi_size bytes
data = f.read(vdi_size)
of.write(data)
if cached_image:
# Create a cache file. If caching is enabled, kernel images do not have
# to be fetched from glance.
cached_image = KERNEL_DIR + '/' + cached_image
logging.debug("copying kernel/ramdisk file from %s to /boot/guest/%s",
dest, cached_image)
cache_file = open(cached_image, 'wb')
cache_file.write(data)
cache_file.close()
logging.debug("Done. Filename: %s", cached_image)
f.close()
of.close()
logging.debug("Done. Filename: %s", filename)
return filename
def copy_vdi(session, args):
vdi = exists(args, 'vdi-ref')
size = exists(args, 'image-size')
cached_image = optional(args, 'cached-image')
# Use the uuid as a filename
vdi_uuid = session.xenapi.VDI.get_uuid(vdi)
copy_args = {'vdi_uuid': vdi_uuid,
'vdi_size': int(size),
'cached-image': cached_image}
filename = with_vdi_in_dom0(session, vdi, False,
lambda dev:
_copy_vdi('/dev/%s' % dev, copy_args))
return filename
def create_kernel_ramdisk(session, args):
"""Creates a copy of the kernel/ramdisk image if it is present in the
cache. If the image is not present in the cache, it does nothing.
"""
cached_image = exists(args, 'cached-image')
image_uuid = exists(args, 'new-image-uuid')
cached_image_filename = KERNEL_DIR + '/' + cached_image
filename = KERNEL_DIR + '/' + image_uuid
if os.path.isfile(cached_image_filename):
shutil.copyfile(cached_image_filename, filename)
logging.debug("Done. Filename: %s", filename)
else:
filename = ""
logging.debug("Cached kernel/ramdisk image not found")
return filename
def _remove_file(filepath):
try:
os.remove(filepath)
except OSError, exc: # noqa
if exc.errno != errno.ENOENT:
raise
def remove_kernel_ramdisk(session, args):
"""Removes kernel and/or ramdisk from dom0's file system."""
kernel_file = optional(args, 'kernel-file')
ramdisk_file = optional(args, 'ramdisk-file')
if kernel_file:
_remove_file(kernel_file)
if ramdisk_file:
_remove_file(ramdisk_file)
return "ok"
if __name__ == '__main__':
XenAPIPlugin.dispatch({'copy_vdi': copy_vdi,
'create_kernel_ramdisk': create_kernel_ramdisk,
'remove_kernel_ramdisk': remove_kernel_ramdisk})

84
plugins/xenserver/xenapi/etc/xapi.d/plugins/migration
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@ -1,84 +0,0 @@
#!/usr/bin/env python
# Copyright 2010 OpenStack Foundation
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""
XenAPI Plugin for transferring data between host nodes
"""
import utils
import pluginlib_nova
pluginlib_nova.configure_logging('migration')
logging = pluginlib_nova.logging
def move_vhds_into_sr(session, instance_uuid, sr_path, uuid_stack):
"""Moves the VHDs from their copied location to the SR."""
staging_path = "/images/instance%s" % instance_uuid
imported_vhds = utils.import_vhds(sr_path, staging_path, uuid_stack)
utils.cleanup_staging_area(staging_path)
return imported_vhds
def _rsync_vhds(instance_uuid, host, staging_path, user="root"):
if not staging_path.endswith('/'):
staging_path += '/'
dest_path = '/images/instance%s/' % (instance_uuid)
ip_cmd = ["/sbin/ip", "addr", "show"]
output = utils.run_command(ip_cmd)
if ' %s/' % host in output:
# If copying to localhost, don't use SSH
rsync_cmd = ["/usr/bin/rsync", "-av", "--progress",
staging_path, dest_path]
else:
ssh_cmd = 'ssh -o StrictHostKeyChecking=no'
rsync_cmd = ["/usr/bin/rsync", "-av", "--progress", "-e", ssh_cmd,
staging_path, '%s@%s:%s' % (user, host, dest_path)]
# NOTE(hillad): rsync's progress is carriage returned, requiring
# universal_newlines for real-time output.
rsync_proc = utils.make_subprocess(rsync_cmd, stdout=True, stderr=True,
universal_newlines=True)
while True:
rsync_progress = rsync_proc.stdout.readline()
if not rsync_progress:
break
logging.debug("[%s] %s" % (instance_uuid, rsync_progress))
utils.finish_subprocess(rsync_proc, rsync_cmd)
def transfer_vhd(session, instance_uuid, host, vdi_uuid, sr_path, seq_num):
"""Rsyncs a VHD to an adjacent host."""
staging_path = utils.make_staging_area(sr_path)
try:
utils.prepare_staging_area(
sr_path, staging_path, [vdi_uuid], seq_num=seq_num)
_rsync_vhds(instance_uuid, host, staging_path)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == '__main__':
utils.register_plugin_calls(move_vhds_into_sr, transfer_vhd)

1
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migration.py

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#!/usr/bin/env python
# Copyright 2010 OpenStack Foundation
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""
XenAPI Plugin for transferring data between host nodes
"""
import utils
import pluginlib_nova
pluginlib_nova.configure_logging('migration')
logging = pluginlib_nova.logging
def move_vhds_into_sr(session, instance_uuid, sr_path, uuid_stack):
"""Moves the VHDs from their copied location to the SR."""
staging_path = "/images/instance%s" % instance_uuid
imported_vhds = utils.import_vhds(sr_path, staging_path, uuid_stack)
utils.cleanup_staging_area(staging_path)
return imported_vhds
def _rsync_vhds(instance_uuid, host, staging_path, user="root"):
if not staging_path.endswith('/'):
staging_path += '/'
dest_path = '/images/instance%s/' % (instance_uuid)
ip_cmd = ["/sbin/ip", "addr", "show"]
output = utils.run_command(ip_cmd)
if ' %s/' % host in output:
# If copying to localhost, don't use SSH
rsync_cmd = ["/usr/bin/rsync", "-av", "--progress",
staging_path, dest_path]
else:
ssh_cmd = 'ssh -o StrictHostKeyChecking=no'
rsync_cmd = ["/usr/bin/rsync", "-av", "--progress", "-e", ssh_cmd,
staging_path, '%s@%s:%s' % (user, host, dest_path)]
# NOTE(hillad): rsync's progress is carriage returned, requiring
# universal_newlines for real-time output.
rsync_proc = utils.make_subprocess(rsync_cmd, stdout=True, stderr=True,
universal_newlines=True)
while True:
rsync_progress = rsync_proc.stdout.readline()
if not rsync_progress:
break
logging.debug("[%s] %s" % (instance_uuid, rsync_progress))
utils.finish_subprocess(rsync_proc, rsync_cmd)
def transfer_vhd(session, instance_uuid, host, vdi_uuid, sr_path, seq_num):
"""Rsyncs a VHD to an adjacent host."""
staging_path = utils.make_staging_area(sr_path)
try:
utils.prepare_staging_area(
sr_path, staging_path, [vdi_uuid], seq_num=seq_num)
_rsync_vhds(instance_uuid, host, staging_path)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == '__main__':
utils.register_plugin_calls(move_vhds_into_sr, transfer_vhd)

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plugins/xenserver/xenapi/etc/xapi.d/plugins/nova_plugin_version
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#!/usr/bin/env python
# Copyright (c) 2013 OpenStack Foundation
# Copyright (c) 2013 Citrix Systems, Inc.
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Returns the version of the nova plugins"""
import utils
# MAJOR VERSION: Incompatible changes
# MINOR VERSION: Compatible changes, new plugins, etc
# 1.0 - Initial version.
# 1.1 - New call to check GC status
# 1.2 - Added support for pci passthrough devices
# 1.3 - Add vhd2 functions for doing glance operations by url
# 1.4 - Add support of Glance v2 api
# 1.5 - Added function for network configuration on ovs bridge
# 1.6 - Add function for network configuration on Linux bridge
# 1.7 - Add Partition utilities plugin
PLUGIN_VERSION = "1.7"
def get_version(session):
return PLUGIN_VERSION
if __name__ == '__main__':
utils.register_plugin_calls(get_version)

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plugins/xenserver/xenapi/etc/xapi.d/plugins/nova_plugin_version Symbolic link
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nova_plugin_version.py

46
plugins/xenserver/xenapi/etc/xapi.d/plugins/nova_plugin_version.py Executable file
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#!/usr/bin/env python
# Copyright (c) 2013 OpenStack Foundation
# Copyright (c) 2013 Citrix Systems, Inc.
#
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Returns the version of the nova plugins"""
import utils
# MAJOR VERSION: Incompatible changes
# MINOR VERSION: Compatible changes, new plugins, etc
# NOTE(sfinucan): 2.0 will be equivalent to the last in the 1.x stream
# 1.0 - Initial version.
# 1.1 - New call to check GC status
# 1.2 - Added support for pci passthrough devices
# 1.3 - Add vhd2 functions for doing glance operations by url
# 1.4 - Add support of Glance v2 api
# 1.5 - Added function for network configuration on ovs bridge
# 1.6 - Add function for network configuration on Linux bridge
# 1.7 - Add Partition utilities plugin
# 1.8 - Add support for calling plug-ins with the .py suffix
PLUGIN_VERSION = "1.8"
def get_version(session):
return PLUGIN_VERSION
if __name__ == '__main__':
utils.register_plugin_calls(get_version)

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plugins/xenserver/xenapi/etc/xapi.d/plugins/workarounds
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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Handle the uploading and downloading of images via Glance."""
import os
import shutil
import utils
import pluginlib_nova
pluginlib_nova.configure_logging('workarounds')
def _copy_vdis(sr_path, staging_path, vdi_uuids):
seq_num = 0
for vdi_uuid in vdi_uuids:
src = os.path.join(sr_path, "%s.vhd" % vdi_uuid)
dst = os.path.join(staging_path, "%d.vhd" % seq_num)
shutil.copyfile(src, dst)
seq_num += 1
def safe_copy_vdis(session, sr_path, vdi_uuids, uuid_stack):
staging_path = utils.make_staging_area(sr_path)
try:
_copy_vdis(sr_path, staging_path, vdi_uuids)
return utils.import_vhds(sr_path, staging_path, uuid_stack)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == '__main__':
utils.register_plugin_calls(safe_copy_vdis)

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workarounds.py

53
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#!/usr/bin/env python
# Copyright (c) 2012 OpenStack Foundation
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
"""Handle the uploading and downloading of images via Glance."""
import os
import shutil
import utils
import pluginlib_nova
pluginlib_nova.configure_logging('workarounds')
def _copy_vdis(sr_path, staging_path, vdi_uuids):
seq_num = 0
for vdi_uuid in vdi_uuids:
src = os.path.join(sr_path, "%s.vhd" % vdi_uuid)
dst = os.path.join(staging_path, "%d.vhd" % seq_num)
shutil.copyfile(src, dst)
seq_num += 1
def safe_copy_vdis(session, sr_path, vdi_uuids, uuid_stack):
staging_path = utils.make_staging_area(sr_path)
try:
_copy_vdis(sr_path, staging_path, vdi_uuids)
return utils.import_vhds(sr_path, staging_path, uuid_stack)
finally:
utils.cleanup_staging_area(staging_path)
if __name__ == '__main__':
utils.register_plugin_calls(safe_copy_vdis)

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plugins/xenserver/xenapi/etc/xapi.d/plugins/xenhost
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#!/usr/bin/env python
# Copyright 2011 OpenStack Foundation
# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
#
# XenAPI plugin for host operations
#
try:
import json
except ImportError:
import simplejson as json
import logging
import re
import sys
import time
import utils
import pluginlib_nova as pluginlib
import XenAPI
import XenAPIPlugin
try:
import xmlrpclib
except ImportError:
import six.moves.xmlrpc_client as xmlrpclib
pluginlib.configure_logging("xenhost")
_ = pluginlib._
host_data_pattern = re.compile(r"\s*(\S+) \([^\)]+\) *: ?(.*)")
config_file_path = "/usr/etc/xenhost.conf"
DEFAULT_TRIES = 23
DEFAULT_SLEEP = 10
def jsonify(fnc):
def wrapper(*args, **kwargs):
return json.dumps(fnc(*args, **kwargs))
return wrapper
class TimeoutError(StandardError):
pass
def _run_command(cmd, cmd_input=None):
"""Wrap utils.run_command to raise PluginError on failure
"""
try:
return utils.run_command(cmd, cmd_input=cmd_input)
except utils.SubprocessException, e: # noqa
raise pluginlib.PluginError(e.err)
def _resume_compute(session, compute_ref, compute_uuid):
"""Resume compute node on slave host after pool join.
This has to happen regardless of the success or failure of the join
operation.
"""
try:
# session is valid if the join operation has failed
session.xenapi.VM.start(compute_ref, False, True)
except XenAPI.Failure:
# if session is invalid, e.g. xapi has restarted, then the pool
# join has been successful, wait for xapi to become alive again
for c in range(0, DEFAULT_TRIES):
try:
_run_command(["xe", "vm-start", "uuid=%s" % compute_uuid])
return
except pluginlib.PluginError:
logging.exception('Waited %d seconds for the slave to '
'become available.' % (c * DEFAULT_SLEEP))
time.sleep(DEFAULT_SLEEP)
raise pluginlib.PluginError('Unrecoverable error: the host has '
'not come back for more than %d seconds'
% (DEFAULT_SLEEP * (DEFAULT_TRIES + 1)))
@jsonify
def set_host_enabled(self, arg_dict):
"""Sets this host's ability to accept new instances.
It will otherwise continue to operate normally.
"""
enabled = arg_dict.get("enabled")
if enabled is None:
raise pluginlib.PluginError(
_("Missing 'enabled' argument to set_host_enabled"))
host_uuid = arg_dict['host_uuid']
if enabled == "true":
result = _run_command(["xe", "host-enable", "uuid=%s" % host_uuid])
elif enabled == "false":
result = _run_command(["xe", "host-disable", "uuid=%s" % host_uuid])
else:
raise pluginlib.PluginError(_("Illegal enabled status: %s") % enabled)
# Should be empty string
if result:
raise pluginlib.PluginError(result)
# Return the current enabled status
cmd = ["xe", "host-param-get", "uuid=%s" % host_uuid, "param-name=enabled"]
host_enabled = _run_command(cmd)
if host_enabled == "true":
status = "enabled"
else:
status = "disabled"
return {"status": status}
def _write_config_dict(dct):
conf_file = file(config_file_path, "w")
json.dump(dct, conf_file)
conf_file.close()
def _get_config_dict():
"""Returns a dict containing the key/values in the config file.
If the file doesn't exist, it is created, and an empty dict
is returned.
"""
try:
conf_file = file(config_file_path)
config_dct = json.load(conf_file)
conf_file.close()
except IOError:
# File doesn't exist
config_dct = {}
# Create the file
_write_config_dict(config_dct)
return config_dct
@jsonify
def get_config(self, arg_dict):
"""Return the value stored for the specified key, or None if no match."""
conf = _get_config_dict()
params = arg_dict["params"]
try:
dct = json.loads(params)
except Exception:
dct = params
key = dct["key"]
ret = conf.get(key)
if ret is None:
# Can't jsonify None
return "None"
return ret
@jsonify
def set_config(self, arg_dict):
"""Write the specified key/value pair, overwriting any existing value."""
conf = _get_config_dict()
params = arg_dict["params"]
try:
dct = json.loads(params)
except Exception:
dct = params
key = dct["key"]
val = dct["value"]
if val is None:
# Delete the key, if present
conf.pop(key, None)
else:
conf.update({key: val})
_write_config_dict(conf)
def iptables_config(session, args):
# command should be either save or restore
logging.debug("iptables_config:enter")
logging.debug("iptables_config: args=%s", args)
cmd_args = pluginlib.exists(args, 'cmd_args')
logging.debug("iptables_config: cmd_args=%s", cmd_args)
process_input = pluginlib.optional(args, 'process_input')
logging.debug("iptables_config: process_input=%s", process_input)
cmd = json.loads(cmd_args)
cmd = map(str, cmd)
# either execute iptable-save or iptables-restore
# command must be only one of these two
# process_input must be used only with iptables-restore
if len(cmd) > 0 and cmd[0] in ('iptables-save',
'iptables-restore',
'ip6tables-save',
'ip6tables-restore'):
result = _run_command(cmd, process_input)
ret_str = json.dumps(dict(out=result, err=''))
logging.debug("iptables_config:exit")
return ret_str
# else don't do anything and return an error
else:
raise pluginlib.PluginError(_("Invalid iptables command"))
def _ovs_add_patch_port(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
port_name = pluginlib.exists(args, 'port_name')
peer_port_name = pluginlib.exists(args, 'peer_port_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists', 'del-port',
port_name, '--', 'add-port', bridge_name, port_name,
'--', 'set', 'interface', port_name,
'type=patch', 'options:peer=%s' % peer_port_name]
return _run_command(cmd_args)
def _ovs_del_port(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
port_name = pluginlib.exists(args, 'port_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists', 'del-port',
bridge_name, port_name]
return _run_command(cmd_args)
def _ovs_del_br(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists',
'del-br', bridge_name]
return _run_command(cmd_args)
def _ovs_set_if_external_id(args):
interface = pluginlib.exists(args, 'interface')
extneral_id = pluginlib.exists(args, 'extneral_id')
value = pluginlib.exists(args, 'value')
cmd_args = ['ovs-vsctl', 'set', 'Interface', interface,
'external-ids:%s=%s' % (extneral_id, value)]
return _run_command(cmd_args)
def _ovs_add_port(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
port_name = pluginlib.exists(args, 'port_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists', 'del-port', port_name,
'--', 'add-port', bridge_name, port_name]
return _run_command(cmd_args)
def _ip_link_get_dev(args):
device_name = pluginlib.exists(args, 'device_name')
cmd_args = ['ip', 'link', 'show', device_name]
return _run_command(cmd_args)
def _ip_link_del_dev(args):
device_name = pluginlib.exists(args, 'device_name')
cmd_args = ['ip', 'link', 'delete', device_name]
return _run_command(cmd_args)
def _ip_link_add_veth_pair(args):
dev1_name = pluginlib.exists(args, 'dev1_name')
dev2_name = pluginlib.exists(args, 'dev2_name')
cmd_args = ['ip', 'link', 'add', dev1_name, 'type', 'veth', 'peer',
'name', dev2_name]
return _run_command(cmd_args)
def _ip_link_set_dev(args):
device_name = pluginlib.exists(args, 'device_name')
option = pluginlib.exists(args, 'option')
cmd_args = ['ip', 'link', 'set', device_name, option]
return _run_command(cmd_args)
def _ip_link_set_promisc(args):
device_name = pluginlib.exists(args, 'device_name')
option = pluginlib.exists(args, 'option')
cmd_args = ['ip', 'link', 'set', device_name, 'promisc', option]
return _run_command(cmd_args)
def _brctl_add_br(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
cmd_args = ['brctl', 'addbr', bridge_name]
return _run_command(cmd_args)
def _brctl_del_br(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
cmd_args = ['brctl', 'delbr', bridge_name]
return _run_command(cmd_args)
def _brctl_set_fd(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
fd = pluginlib.exists(args, 'fd')
cmd_args = ['brctl', 'setfd', bridge_name, fd]
return _run_command(cmd_args)
def _brctl_set_stp(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
option = pluginlib.exists(args, 'option')
cmd_args = ['brctl', 'stp', bridge_name, option]
return _run_command(cmd_args)
def _brctl_add_if(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
if_name = pluginlib.exists(args, 'interface_name')
cmd_args = ['brctl', 'addif', bridge_name, if_name]
return _run_command(cmd_args)
def _brctl_del_if(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
if_name = pluginlib.exists(args, 'interface_name')
cmd_args = ['brctl', 'delif', bridge_name, if_name]
return _run_command(cmd_args)
ALLOWED_NETWORK_CMDS = {
# allowed cmds to config OVS bridge
'ovs_add_patch_port': _ovs_add_patch_port,
'ovs_add_port': _ovs_add_port,
'ovs_del_port': _ovs_del_port,
'ovs_del_br': _ovs_del_br,
'ovs_set_if_external_id': _ovs_set_if_external_id,
'ip_link_add_veth_pair': _ip_link_add_veth_pair,
'ip_link_del_dev': _ip_link_del_dev,
'ip_link_get_dev': _ip_link_get_dev,
'ip_link_set_dev': _ip_link_set_dev,
'ip_link_set_promisc': _ip_link_set_promisc,
'brctl_add_br': _brctl_add_br,
'brctl_add_if': _brctl_add_if,
'brctl_del_br': _brctl_del_br,
'brctl_del_if': _brctl_del_if,
'brctl_set_fd': _brctl_set_fd,
'brctl_set_stp': _brctl_set_stp
}
def network_config(session, args):
"""network config functions"""
cmd = pluginlib.exists(args, 'cmd')
if not isinstance(cmd, basestring):
msg = _("invalid command '%s'") % str(cmd)
raise pluginlib.PluginError(msg)
return
if cmd not in ALLOWED_NETWORK_CMDS:
msg = _("Dom0 execution of '%s' is not permitted") % cmd
raise pluginlib.PluginError(msg)
return
cmd_args = pluginlib.exists(args, 'args')
return ALLOWED_NETWORK_CMDS[cmd](cmd_args)
def _power_action(action, arg_dict):
# Host must be disabled first
host_uuid = arg_dict['host_uuid']
result = _run_command(["xe", "host-disable", "uuid=%s" % host_uuid])
if result:
raise pluginlib.PluginError(result)
# All running VMs must be shutdown
result = _run_command(["xe", "vm-shutdown", "--multiple",
"resident-on=%s" % host_uuid])
if result:
raise pluginlib.PluginError(result)
cmds = {"reboot": "host-reboot",
"startup": "host-power-on",
"shutdown": "host-shutdown"}
result = _run_command(["xe", cmds[action], "uuid=%s" % host_uuid])
# Should be empty string
if result:
raise pluginlib.PluginError(result)
return {"power_action": action}
@jsonify
def host_reboot(self, arg_dict):
"""Reboots the host."""
return _power_action("reboot", arg_dict)
@jsonify
def host_shutdown(self, arg_dict):
"""Reboots the host."""
return _power_action("shutdown", arg_dict)
@jsonify
def host_start(self, arg_dict):
"""Starts the host.
Currently not feasible, since the host runs on the same machine as
Xen.
"""
return _power_action("startup", arg_dict)
@jsonify
def host_join(self, arg_dict):
"""Join a remote host into a pool.
The pool's master is the host where the plugin is called from. The
following constraints apply:
- The host must have no VMs running, except nova-compute, which
will be shut down (and restarted upon pool-join) automatically,
- The host must have no shared storage currently set up,
- The host must have the same license of the master,
- The host must have the same supplemental packs as the master.
"""
session = XenAPI.Session(arg_dict.get("url"))
session.login_with_password(arg_dict.get("user"),
arg_dict.get("password"))
compute_ref = session.xenapi.VM.get_by_uuid(arg_dict.get('compute_uuid'))
session.xenapi.VM.clean_shutdown(compute_ref)
try:
if arg_dict.get("force"):
session.xenapi.pool.join(arg_dict.get("master_addr"),
arg_dict.get("master_user"),
arg_dict.get("master_pass"))
else:
session.xenapi.pool.join_force(arg_dict.get("master_addr"),
arg_dict.get("master_user"),
arg_dict.get("master_pass"))
finally:
_resume_compute(session, compute_ref, arg_dict.get("compute_uuid"))
@jsonify
def host_data(self, arg_dict):
"""Runs the commands on the xenstore host to return the current status
information.
"""
host_uuid = arg_dict['host_uuid']
resp = _run_command(["xe", "host-param-list", "uuid=%s" % host_uuid])
parsed_data = parse_response(resp)
# We have the raw dict of values. Extract those that we need,
# and convert the data types as needed.
ret_dict = cleanup(parsed_data)
# Add any config settings
config = _get_config_dict()
ret_dict.update(config)
return ret_dict
def parse_response(resp):
data = {}
for ln in resp.splitlines():
if not ln:
continue
mtch = host_data_pattern.match(ln.strip())
try:
k, v = mtch.groups()
data[k] = v
except AttributeError:
# Not a valid line; skip it
continue
return data
@jsonify
def host_uptime(self, arg_dict):
"""Returns the result of the uptime command on the xenhost."""
return {"uptime": _run_command(['uptime'])}
def cleanup(dct):
"""Take the raw KV pairs returned and translate them into the
appropriate types, discarding any we don't need.
"""
def safe_int(val):
"""Integer values will either be string versions of numbers,
or empty strings. Convert the latter to nulls.
"""
try:
return int(val)
except ValueError:
return None
def strip_kv(ln):
return [val.strip() for val in ln.split(":", 1)]
out = {}
# sbs = dct.get("supported-bootloaders", "")
# out["host_supported-bootloaders"] = sbs.split("; ")
# out["host_suspend-image-sr-uuid"] = dct.get("suspend-image-sr-uuid", "")
# out["host_crash-dump-sr-uuid"] = dct.get("crash-dump-sr-uuid", "")
# out["host_local-cache-sr"] = dct.get("local-cache-sr", "")
out["enabled"] = dct.get("enabled", "true") == "true"
out["host_memory"] = omm = {}
omm["total"] = safe_int(dct.get("memory-total", ""))
omm["overhead"] = safe_int(dct.get("memory-overhead", ""))
omm["free"] = safe_int(dct.get("memory-free", ""))
omm["free-computed"] = safe_int(
dct.get("memory-free-computed", ""))
# out["host_API-version"] = avv = {}
# avv["vendor"] = dct.get("API-version-vendor", "")
# avv["major"] = safe_int(dct.get("API-version-major", ""))
# avv["minor"] = safe_int(dct.get("API-version-minor", ""))
out["enabled"] = dct.get("enabled", True)
out["host_uuid"] = dct.get("uuid", None)
out["host_name-label"] = dct.get("name-label", "")
out["host_name-description"] = dct.get("name-description", "")
# out["host_host-metrics-live"] = dct.get(
# "host-metrics-live", "false") == "true"
out["host_hostname"] = dct.get("hostname", "")
out["host_ip_address"] = dct.get("address", "")
oc = dct.get("other-config", "")
out["host_other-config"] = ocd = {}
if oc:
for oc_fld in oc.split("; "):
ock, ocv = strip_kv(oc_fld)
ocd[ock] = ocv
capabilities = dct.get("capabilities", "")
out["host_capabilities"] = capabilities.replace(";", "").split()
# out["host_allowed-operations"] = dct.get(
# "allowed-operations", "").split("; ")
# lsrv = dct.get("license-server", "")
# out["host_license-server"] = ols = {}
# if lsrv:
# for lspart in lsrv.split("; "):
# lsk, lsv = lspart.split(": ")
# if lsk == "port":
# ols[lsk] = safe_int(lsv)
# else:
# ols[lsk] = lsv
# sv = dct.get("software-version", "")
# out["host_software-version"] = osv = {}
# if sv:
# for svln in sv.split("; "):
# svk, svv = strip_kv(svln)
# osv[svk] = svv
cpuinf = dct.get("cpu_info", "")
out["host_cpu_info"] = ocp = {}
if cpuinf:
for cpln in cpuinf.split("; "):
cpk, cpv = strip_kv(cpln)
if cpk in ("cpu_count", "family", "model", "stepping"):
ocp[cpk] = safe_int(cpv)
else:
ocp[cpk] = cpv
# out["host_edition"] = dct.get("edition", "")
# out["host_external-auth-service-name"] = dct.get(
# "external-auth-service-name", "")
return out
def query_gc(session, sr_uuid, vdi_uuid):
result = _run_command(["/opt/xensource/sm/cleanup.py",
"-q", "-u", sr_uuid])
# Example output: "Currently running: True"
return result[19:].strip() == "True"
def get_pci_device_details(session):
"""Returns a string that is a list of pci devices with details.
This string is obtained by running the command lspci. With -vmm option,
it dumps PCI device data in machine readable form. This verbose format
display a sequence of records separated by a blank line. We will also
use option "-n" to get vendor_id and device_id as numeric values and
the "-k" option to get the kernel driver used if any.
"""
return _run_command(["lspci", "-vmmnk"])
def get_pci_type(session, pci_device):
"""Returns the type of the PCI device (type-PCI, type-VF or type-PF).
pci-device -- The address of the pci device
"""
# We need to add the domain if it is missing
if pci_device.count(':') == 1:
pci_device = "0000:" + pci_device
output = _run_command(["ls", "/sys/bus/pci/devices/" + pci_device + "/"])
if "physfn" in output:
return "type-VF"
if "virtfn" in output:
return "type-PF"
return "type-PCI"
if __name__ == "__main__":
# Support both serialized and non-serialized plugin approaches
_, methodname = xmlrpclib.loads(sys.argv[1])
if methodname in ['query_gc', 'get_pci_device_details', 'get_pci_type',
'network_config']:
utils.register_plugin_calls(query_gc,
get_pci_device_details,
get_pci_type,
network_config)
XenAPIPlugin.dispatch(
{"host_data": host_data,
"set_host_enabled": set_host_enabled,
"host_shutdown": host_shutdown,
"host_reboot": host_reboot,
"host_start": host_start,
"host_join": host_join,
"get_config": get_config,
"set_config": set_config,
"iptables_config": iptables_config,
"host_uptime": host_uptime})

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plugins/xenserver/xenapi/etc/xapi.d/plugins/xenhost Symbolic link
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xenhost.py

626
plugins/xenserver/xenapi/etc/xapi.d/plugins/xenhost.py Executable file
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#!/usr/bin/env python
# Copyright 2011 OpenStack Foundation
# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
# NOTE: XenServer still only supports Python 2.4 in it's dom0 userspace
# which means the Nova xenapi plugins must use only Python 2.4 features
# TODO(sfinucan): Resolve all 'noqa' items once the above is no longer true
#
# XenAPI plugin for host operations
#
try:
import json
except ImportError:
import simplejson as json
import logging
import re
import sys
import time
import utils
import pluginlib_nova as pluginlib
import XenAPI
import XenAPIPlugin
try:
import xmlrpclib
except ImportError:
import six.moves.xmlrpc_client as xmlrpclib
pluginlib.configure_logging("xenhost")
_ = pluginlib._
host_data_pattern = re.compile(r"\s*(\S+) \([^\)]+\) *: ?(.*)")
config_file_path = "/usr/etc/xenhost.conf"
DEFAULT_TRIES = 23
DEFAULT_SLEEP = 10
def jsonify(fnc):
def wrapper(*args, **kwargs):
return json.dumps(fnc(*args, **kwargs))
return wrapper
class TimeoutError(StandardError):
pass
def _run_command(cmd, cmd_input=None):
"""Wrap utils.run_command to raise PluginError on failure
"""
try:
return utils.run_command(cmd, cmd_input=cmd_input)
except utils.SubprocessException, e: # noqa
raise pluginlib.PluginError(e.err)
def _resume_compute(session, compute_ref, compute_uuid):
"""Resume compute node on slave host after pool join.
This has to happen regardless of the success or failure of the join
operation.
"""
try:
# session is valid if the join operation has failed
session.xenapi.VM.start(compute_ref, False, True)
except XenAPI.Failure:
# if session is invalid, e.g. xapi has restarted, then the pool
# join has been successful, wait for xapi to become alive again
for c in range(0, DEFAULT_TRIES):
try:
_run_command(["xe", "vm-start", "uuid=%s" % compute_uuid])
return
except pluginlib.PluginError:
logging.exception('Waited %d seconds for the slave to '
'become available.' % (c * DEFAULT_SLEEP))
time.sleep(DEFAULT_SLEEP)
raise pluginlib.PluginError('Unrecoverable error: the host has '
'not come back for more than %d seconds'
% (DEFAULT_SLEEP * (DEFAULT_TRIES + 1)))
@jsonify
def set_host_enabled(self, arg_dict):
"""Sets this host's ability to accept new instances.
It will otherwise continue to operate normally.
"""
enabled = arg_dict.get("enabled")
if enabled is None:
raise pluginlib.PluginError(
_("Missing 'enabled' argument to set_host_enabled"))
host_uuid = arg_dict['host_uuid']
if enabled == "true":
result = _run_command(["xe", "host-enable", "uuid=%s" % host_uuid])
elif enabled == "false":
result = _run_command(["xe", "host-disable", "uuid=%s" % host_uuid])
else:
raise pluginlib.PluginError(_("Illegal enabled status: %s") % enabled)
# Should be empty string
if result:
raise pluginlib.PluginError(result)
# Return the current enabled status
cmd = ["xe", "host-param-get", "uuid=%s" % host_uuid, "param-name=enabled"]
host_enabled = _run_command(cmd)
if host_enabled == "true":
status = "enabled"
else:
status = "disabled"
return {"status": status}
def _write_config_dict(dct):
conf_file = file(config_file_path, "w")
json.dump(dct, conf_file)
conf_file.close()
def _get_config_dict():
"""Returns a dict containing the key/values in the config file.
If the file doesn't exist, it is created, and an empty dict
is returned.
"""
try:
conf_file = file(config_file_path)
config_dct = json.load(conf_file)
conf_file.close()
except IOError:
# File doesn't exist
config_dct = {}
# Create the file
_write_config_dict(config_dct)
return config_dct
@jsonify
def get_config(self, arg_dict):
"""Return the value stored for the specified key, or None if no match."""
conf = _get_config_dict()
params = arg_dict["params"]
try:
dct = json.loads(params)
except Exception:
dct = params
key = dct["key"]
ret = conf.get(key)
if ret is None:
# Can't jsonify None
return "None"
return ret
@jsonify
def set_config(self, arg_dict):
"""Write the specified key/value pair, overwriting any existing value."""
conf = _get_config_dict()
params = arg_dict["params"]
try:
dct = json.loads(params)
except Exception:
dct = params
key = dct["key"]
val = dct["value"]
if val is None:
# Delete the key, if present
conf.pop(key, None)
else:
conf.update({key: val})
_write_config_dict(conf)
def iptables_config(session, args):
# command should be either save or restore
logging.debug("iptables_config:enter")
logging.debug("iptables_config: args=%s", args)
cmd_args = pluginlib.exists(args, 'cmd_args')
logging.debug("iptables_config: cmd_args=%s", cmd_args)
process_input = pluginlib.optional(args, 'process_input')
logging.debug("iptables_config: process_input=%s", process_input)
cmd = json.loads(cmd_args)
cmd = map(str, cmd)
# either execute iptable-save or iptables-restore
# command must be only one of these two
# process_input must be used only with iptables-restore
if len(cmd) > 0 and cmd[0] in ('iptables-save',
'iptables-restore',
'ip6tables-save',
'ip6tables-restore'):
result = _run_command(cmd, process_input)
ret_str = json.dumps(dict(out=result, err=''))
logging.debug("iptables_config:exit")
return ret_str
# else don't do anything and return an error
else:
raise pluginlib.PluginError(_("Invalid iptables command"))
def _ovs_add_patch_port(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
port_name = pluginlib.exists(args, 'port_name')
peer_port_name = pluginlib.exists(args, 'peer_port_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists', 'del-port',
port_name, '--', 'add-port', bridge_name, port_name,
'--', 'set', 'interface', port_name,
'type=patch', 'options:peer=%s' % peer_port_name]
return _run_command(cmd_args)
def _ovs_del_port(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
port_name = pluginlib.exists(args, 'port_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists', 'del-port',
bridge_name, port_name]
return _run_command(cmd_args)
def _ovs_del_br(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists',
'del-br', bridge_name]
return _run_command(cmd_args)
def _ovs_set_if_external_id(args):
interface = pluginlib.exists(args, 'interface')
extneral_id = pluginlib.exists(args, 'extneral_id')
value = pluginlib.exists(args, 'value')
cmd_args = ['ovs-vsctl', 'set', 'Interface', interface,
'external-ids:%s=%s' % (extneral_id, value)]
return _run_command(cmd_args)
def _ovs_add_port(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
port_name = pluginlib.exists(args, 'port_name')
cmd_args = ['ovs-vsctl', '--', '--if-exists', 'del-port', port_name,
'--', 'add-port', bridge_name, port_name]
return _run_command(cmd_args)
def _ip_link_get_dev(args):
device_name = pluginlib.exists(args, 'device_name')
cmd_args = ['ip', 'link', 'show', device_name]
return _run_command(cmd_args)
def _ip_link_del_dev(args):
device_name = pluginlib.exists(args, 'device_name')
cmd_args = ['ip', 'link', 'delete', device_name]
return _run_command(cmd_args)
def _ip_link_add_veth_pair(args):
dev1_name = pluginlib.exists(args, 'dev1_name')
dev2_name = pluginlib.exists(args, 'dev2_name')
cmd_args = ['ip', 'link', 'add', dev1_name, 'type', 'veth', 'peer',
'name', dev2_name]
return _run_command(cmd_args)
def _ip_link_set_dev(args):
device_name = pluginlib.exists(args, 'device_name')
option = pluginlib.exists(args, 'option')
cmd_args = ['ip', 'link', 'set', device_name, option]
return _run_command(cmd_args)
def _ip_link_set_promisc(args):
device_name = pluginlib.exists(args, 'device_name')
option = pluginlib.exists(args, 'option')
cmd_args = ['ip', 'link', 'set', device_name, 'promisc', option]
return _run_command(cmd_args)
def _brctl_add_br(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
cmd_args = ['brctl', 'addbr', bridge_name]
return _run_command(cmd_args)
def _brctl_del_br(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
cmd_args = ['brctl', 'delbr', bridge_name]
return _run_command(cmd_args)
def _brctl_set_fd(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
fd = pluginlib.exists(args, 'fd')
cmd_args = ['brctl', 'setfd', bridge_name, fd]
return _run_command(cmd_args)
def _brctl_set_stp(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
option = pluginlib.exists(args, 'option')
cmd_args = ['brctl', 'stp', bridge_name, option]
return _run_command(cmd_args)
def _brctl_add_if(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
if_name = pluginlib.exists(args, 'interface_name')
cmd_args = ['brctl', 'addif', bridge_name, if_name]
return _run_command(cmd_args)
def _brctl_del_if(args):
bridge_name = pluginlib.exists(args, 'bridge_name')
if_name = pluginlib.exists(args, 'interface_name')
cmd_args = ['brctl', 'delif', bridge_name, if_name]
return _run_command(cmd_args)
ALLOWED_NETWORK_CMDS = {
# allowed cmds to config OVS bridge
'ovs_add_patch_port': _ovs_add_patch_port,
'ovs_add_port': _ovs_add_port,
'ovs_del_port': _ovs_del_port,
'ovs_del_br': _ovs_del_br,
'ovs_set_if_external_id': _ovs_set_if_external_id,
'ip_link_add_veth_pair': _ip_link_add_veth_pair,
'ip_link_del_dev': _ip_link_del_dev,
'ip_link_get_dev': _ip_link_get_dev,
'ip_link_set_dev': _ip_link_set_dev,
'ip_link_set_promisc': _ip_link_set_promisc,
'brctl_add_br': _brctl_add_br,
'brctl_add_if': _brctl_add_if,
'brctl_del_br': _brctl_del_br,
'brctl_del_if': _brctl_del_if,
'brctl_set_fd': _brctl_set_fd,
'brctl_set_stp': _brctl_set_stp
}
def network_config(session, args):
"""network config functions"""
cmd = pluginlib.exists(args, 'cmd')
if not isinstance(cmd, basestring):
msg = _("invalid command '%s'") % str(cmd)
raise pluginlib.PluginError(msg)
return
if cmd not in ALLOWED_NETWORK_CMDS:
msg = _("Dom0 execution of '%s' is not permitted") % cmd
raise pluginlib.PluginError(msg)
return
cmd_args = pluginlib.exists(args, 'args')
return ALLOWED_NETWORK_CMDS[cmd](cmd_args)
def _power_action(action, arg_dict):
# Host must be disabled first
host_uuid = arg_dict['host_uuid']
result = _run_command(["xe", "host-disable", "uuid=%s" % host_uuid])
if result:
raise pluginlib.PluginError(result)
# All running VMs must be shutdown
result = _run_command(["xe", "vm-shutdown", "--multiple",
"resident-on=%s" % host_uuid])
if result:
raise pluginlib.PluginError(result)
cmds = {"reboot": "host-reboot",
"startup": "host-power-on",
"shutdown": "host-shutdown"}
result = _run_command(["xe", cmds[action], "uuid=%s" % host_uuid])
# Should be empty string
if result:
raise pluginlib.PluginError(result)
return {"power_action": action}
@jsonify
def host_reboot(self, arg_dict):
"""Reboots the host."""
return _power_action("reboot", arg_dict)
@jsonify
def host_shutdown(self, arg_dict):
"""Reboots the host."""
return _power_action("shutdown", arg_dict)
@jsonify
def host_start(self, arg_dict):
"""Starts the host.
Currently not feasible, since the host runs on the same machine as
Xen.
"""
return _power_action("startup", arg_dict)
@jsonify
def host_join(self, arg_dict):
"""Join a remote host into a pool.
The pool's master is the host where the plugin is called from. The
following constraints apply:
- The host must have no VMs running, except nova-compute, which
will be shut down (and restarted upon pool-join) automatically,
- The host must have no shared storage currently set up,
- The host must have the same license of the master,
- The host must have the same supplemental packs as the master.
"""
session = XenAPI.Session(arg_dict.get("url"))
session.login_with_password(arg_dict.get("user"),
arg_dict.get("password"))
compute_ref = session.xenapi.VM.get_by_uuid(arg_dict.get('compute_uuid'))
session.xenapi.VM.clean_shutdown(compute_ref)
try:
if arg_dict.get("force"):
session.xenapi.pool.join(arg_dict.get("master_addr"),
arg_dict.get("master_user"),
arg_dict.get("master_pass"))
else:
session.xenapi.pool.join_force(arg_dict.get("master_addr"),
arg_dict.get("master_user"),
arg_dict.get("master_pass"))
finally:
_resume_compute(session, compute_ref, arg_dict.get("compute_uuid"))
@jsonify
def host_data(self, arg_dict):
"""Runs the commands on the xenstore host to return the current status
information.
"""
host_uuid = arg_dict['host_uuid']
resp = _run_command(["xe", "host-param-list", "uuid=%s" % host_uuid])
parsed_data = parse_response(resp)
# We have the raw dict of values. Extract those that we need,
# and convert the data types as needed.
ret_dict = cleanup(parsed_data)
# Add any config settings
config = _get_config_dict()
ret_dict.update(config)
return ret_dict
def parse_response(resp):
data = {}
for ln in resp.splitlines():
if not ln:
continue
mtch = host_data_pattern.match(ln.strip())
try:
k, v = mtch.groups()
data[k] = v
except AttributeError:
# Not a valid line; skip it
continue
return data
@jsonify
def host_uptime(self, arg_dict):
"""Returns the result of the uptime command on the xenhost."""
return {"uptime": _run_command(['uptime'])}
def cleanup(dct):
"""Take the raw KV pairs returned and translate them into the
appropriate types, discarding any we don't need.
"""
def safe_int(val):
"""Integer values will either be string versions of numbers,
or empty strings. Convert the latter to nulls.
"""
try:
return int(val)
except ValueError:
return None
def strip_kv(ln):
return [val.strip() for val in ln.split(":", 1)]
out = {}
# sbs = dct.get("supported-bootloaders", "")
# out["host_supported-bootloaders"] = sbs.split("; ")
# out["host_suspend-image-sr-uuid"] = dct.get("suspend-image-sr-uuid", "")
# out["host_crash-dump-sr-uuid"] = dct.get("crash-dump-sr-uuid", "")
# out["host_local-cache-sr"] = dct.get("local-cache-sr", "")
out["enabled"] = dct.get("enabled", "true") == "true"
out["host_memory"] = omm = {}
omm["total"] = safe_int(dct.get("memory-total", ""))
omm["overhead"] = safe_int(dct.get("memory-overhead", ""))
omm["free"] = safe_int(dct.get("memory-free", ""))
omm["free-computed"] = safe_int(
dct.get("memory-free-computed", ""))
# out["host_API-version"] = avv = {}
# avv["vendor"] = dct.get("API-version-vendor", "")
# avv["major"] = safe_int(dct.get("API-version-major", ""))
# avv["minor"] = safe_int(dct.get("API-version-minor", ""))
out["enabled"] = dct.get("enabled", True)
out["host_uuid"] = dct.get("uuid", None)
out["host_name-label"] = dct.get("name-label", "")
out["host_name-description"] = dct.get("name-description", "")
# out["host_host-metrics-live"] = dct.get(
# "host-metrics-live", "false") == "true"
out["host_hostname"] = dct.get("hostname", "")
out["host_ip_address"] = dct.get("address", "")
oc = dct.get("other-config", "")
out["host_other-config"] = ocd = {}
if oc:
for oc_fld in oc.split("; "):
ock, ocv = strip_kv(oc_fld)
ocd[ock] = ocv
capabilities = dct.get("capabilities", "")
out["host_capabilities"] = capabilities.replace(";", "").split()
# out["host_allowed-operations"] = dct.get(
# "allowed-operations", "").split("; ")
# lsrv = dct.get("license-server", "")
# out["host_license-server"] = ols = {}
# if lsrv:
# for lspart in lsrv.split("; "):
# lsk, lsv = lspart.split(": ")
# if lsk == "port":
# ols[lsk] = safe_int(lsv)
# else:
# ols[lsk] = lsv
# sv = dct.get("software-version", "")
# out["host_software-version"] = osv = {}
# if sv:
# for svln in sv.split("; "):
# svk, svv = strip_kv(svln)
# osv[svk] = svv
cpuinf = dct.get("cpu_info", "")
out["host_cpu_info"] = ocp = {}
if cpuinf:
for cpln in cpuinf.split("; "):
cpk, cpv = strip_kv(cpln)
if cpk in ("cpu_count", "family", "model", "stepping"):
ocp[cpk] = safe_int(cpv)
else:
ocp[cpk] = cpv
# out["host_edition"] = dct.get("edition", "")
# out["host_external-auth-service-name"] = dct.get(
# "external-auth-service-name", "")
return out
def query_gc(session, sr_uuid, vdi_uuid):
result = _run_command(["/opt/xensource/sm/cleanup.py",
"-q", "-u", sr_uuid])
# Example output: "Currently running: True"
return result[19:].strip() == "True"
def get_pci_device_details(session):
"""Returns a string that is a list of pci devices with details.
This string is obtained by running the command lspci. With -vmm option,
it dumps PCI device data in machine readable form. This verbose format
display a sequence of records separated by a blank line. We will also
use option "-n" to get vendor_id and device_id as numeric values and
the "-k" option to get the kernel driver used if any.
"""
return _run_command(["lspci", "-vmmnk"])
def get_pci_type(session, pci_device):
"""Returns the type of the PCI device (type-PCI, type-VF or type-PF).
pci-device -- The address of the pci device
"""
# We need to add the domain if it is missing
if pci_device.count(':') == 1:
pci_device = "0000:" + pci_device
output = _run_command(["ls", "/sys/bus/pci/devices/" + pci_device + "/"])
if "physfn" in output:
return "type-VF"
if "virtfn" in output:
return "type-PF"
return "type-PCI"
if __name__ == "__main__":
# Support both serialized and non-serialized plugin approaches
_, methodname = xmlrpclib.loads(sys.argv[1])
if methodname in ['query_gc', 'get_pci_device_details', 'get_pci_type',
'network_config']:
utils.register_plugin_calls(query_gc,
get_pci_device_details,
get_pci_type,
network_config)
XenAPIPlugin.dispatch(
{"host_data": host_data,
"set_host_enabled": set_host_enabled,
"host_shutdown": host_shutdown,
"host_reboot": host_reboot,
"host_start": host_start,
"host_join": host_join,
"get_config": get_config,
"set_config": set_config,
"iptables_config": iptables_config,
"host_uptime": host_uptime})

6
releasenotes/notes/xenserver-plugin-extensions-57e01c9473073d0a.yaml Normal file
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@ -0,0 +1,6 @@
---
upgrade:
- XenServer plugins have been renamed to include a '.py' extension. Code has
been included to handle plugins with and without the extension, but this
will be removed in the next release. The plugins with the extension should
be deployed on all compute nodes to mitigate any upgrade issues.