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from cloudinit import helpers
from cloudinit.sources import DataSourceNoCloud
from cloudinit import util
from ..helpers import TestCase, populate_dir
import os
import shutil
import tempfile
import unittest
import yaml
try:
from unittest import mock
except ImportError:
import mock
try:
from contextlib import ExitStack
except ImportError:
from contextlib2 import ExitStack
class TestNoCloudDataSource(TestCase):
def setUp(self):
super(TestNoCloudDataSource, self).setUp()
self.tmp = tempfile.mkdtemp()
self.addCleanup(shutil.rmtree, self.tmp)
self.paths = helpers.Paths({'cloud_dir': self.tmp})
self.cmdline = "root=TESTCMDLINE"
self.mocks = ExitStack()
self.addCleanup(self.mocks.close)
self.mocks.enter_context(
mock.patch.object(util, 'get_cmdline', return_value=self.cmdline))
def test_nocloud_seed_dir(self):
md = {'instance-id': 'IID', 'dsmode': 'local'}
ud = b"USER_DATA_HERE"
populate_dir(os.path.join(self.paths.seed_dir, "nocloud"),
{'user-data': ud, 'meta-data': yaml.safe_dump(md)})
sys_cfg = {
'datasource': {'NoCloud': {'fs_label': None}}
}
ds = DataSourceNoCloud.DataSourceNoCloud
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
ret = dsrc.get_data()
self.assertEqual(dsrc.userdata_raw, ud)
self.assertEqual(dsrc.metadata, md)
self.assertTrue(ret)
def test_fs_label(self):
# find_devs_with should not be called ff fs_label is None
ds = DataSourceNoCloud.DataSourceNoCloud
class PsuedoException(Exception):
pass
def my_find_devs_with(*args, **kwargs):
raise PsuedoException
self.mocks.enter_context(
mock.patch.object(util, 'find_devs_with',
side_effect=PsuedoException))
# by default, NoCloud should search for filesystems by label
sys_cfg = {'datasource': {'NoCloud': {}}}
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
self.assertRaises(PsuedoException, dsrc.get_data)
# but disabling searching should just end up with None found
sys_cfg = {'datasource': {'NoCloud': {'fs_label': None}}}
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
ret = dsrc.get_data()
self.assertFalse(ret)
def test_no_datasource_expected(self):
# no source should be found if no cmdline, config, and fs_label=None
sys_cfg = {'datasource': {'NoCloud': {'fs_label': None}}}
ds = DataSourceNoCloud.DataSourceNoCloud
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
self.assertFalse(dsrc.get_data())
def test_seed_in_config(self):
ds = DataSourceNoCloud.DataSourceNoCloud
data = {
'fs_label': None,
'meta-data': yaml.safe_dump({'instance-id': 'IID'}),
'user-data': b"USER_DATA_RAW",
}
sys_cfg = {'datasource': {'NoCloud': data}}
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
ret = dsrc.get_data()
self.assertEqual(dsrc.userdata_raw, b"USER_DATA_RAW")
self.assertEqual(dsrc.metadata.get('instance-id'), 'IID')
self.assertTrue(ret)
def test_nocloud_seed_with_vendordata(self):
md = {'instance-id': 'IID', 'dsmode': 'local'}
ud = b"USER_DATA_HERE"
vd = b"THIS IS MY VENDOR_DATA"
populate_dir(os.path.join(self.paths.seed_dir, "nocloud"),
{'user-data': ud, 'meta-data': yaml.safe_dump(md),
'vendor-data': vd})
sys_cfg = {
'datasource': {'NoCloud': {'fs_label': None}}
}
ds = DataSourceNoCloud.DataSourceNoCloud
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
ret = dsrc.get_data()
self.assertEqual(dsrc.userdata_raw, ud)
self.assertEqual(dsrc.metadata, md)
self.assertEqual(dsrc.vendordata_raw, vd)
self.assertTrue(ret)
def test_nocloud_no_vendordata(self):
populate_dir(os.path.join(self.paths.seed_dir, "nocloud"),
{'user-data': b"ud", 'meta-data': "instance-id: IID\n"})
sys_cfg = {'datasource': {'NoCloud': {'fs_label': None}}}
ds = DataSourceNoCloud.DataSourceNoCloud
dsrc = ds(sys_cfg=sys_cfg, distro=None, paths=self.paths)
ret = dsrc.get_data()
self.assertEqual(dsrc.userdata_raw, b"ud")
self.assertFalse(dsrc.vendordata)
self.assertTrue(ret)
class TestParseCommandLineData(unittest.TestCase):
def test_parse_cmdline_data_valid(self):
ds_id = "ds=nocloud"
pairs = (
("root=/dev/sda1 %(ds_id)s", {}),
("%(ds_id)s; root=/dev/foo", {}),
("%(ds_id)s", {}),
("%(ds_id)s;", {}),
("%(ds_id)s;s=SEED", {'seedfrom': 'SEED'}),
("%(ds_id)s;seedfrom=SEED;local-hostname=xhost",
{'seedfrom': 'SEED', 'local-hostname': 'xhost'}),
("%(ds_id)s;h=xhost",
{'local-hostname': 'xhost'}),
("%(ds_id)s;h=xhost;i=IID",
{'local-hostname': 'xhost', 'instance-id': 'IID'}),
)
for (fmt, expected) in pairs:
fill = {}
cmdline = fmt % {'ds_id': ds_id}
ret = DataSourceNoCloud.parse_cmdline_data(ds_id=ds_id, fill=fill,
cmdline=cmdline)
self.assertEqual(expected, fill)
self.assertTrue(ret)
def test_parse_cmdline_data_none(self):
ds_id = "ds=foo"
cmdlines = (
"root=/dev/sda1 ro",
"console=/dev/ttyS0 root=/dev/foo",
"",
"ds=foocloud",
"ds=foo-net",
"ds=nocloud;s=SEED",
)
for cmdline in cmdlines:
fill = {}
ret = DataSourceNoCloud.parse_cmdline_data(ds_id=ds_id, fill=fill,
cmdline=cmdline)
self.assertEqual(fill, {})
self.assertFalse(ret)
# vi: ts=4 expandtab
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