~smoser/ubuntu/quantal/cloud-init/sru

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
from copy import copy
import json
import os
import os.path
import shutil
import tempfile
from unittest import TestCase

from cloudinit import helpers
from cloudinit import settings
from cloudinit.sources import DataSourceConfigDrive as ds
from cloudinit import util


PUBKEY = u'ssh-rsa AAAAB3NzaC1....sIkJhq8wdX+4I3A4cYbYP ubuntu@server-460\n'
EC2_META = {
    'ami-id': 'ami-00000001',
    'ami-launch-index': 0,
    'ami-manifest-path': 'FIXME',
    'block-device-mapping': {
        'ami': 'sda1',
        'ephemeral0': 'sda2',
        'root': '/dev/sda1',
        'swap': 'sda3'},
    'hostname': 'sm-foo-test.novalocal',
    'instance-action': 'none',
    'instance-id': 'i-00000001',
    'instance-type': 'm1.tiny',
    'local-hostname': 'sm-foo-test.novalocal',
    'local-ipv4': None,
    'placement': {'availability-zone': 'nova'},
    'public-hostname': 'sm-foo-test.novalocal',
    'public-ipv4': '',
    'public-keys': {'0': {'openssh-key': PUBKEY}},
    'reservation-id': 'r-iru5qm4m',
    'security-groups': ['default']
}
USER_DATA = '#!/bin/sh\necho This is user data\n'
OSTACK_META = {
    'availability_zone': 'nova',
    'files': [{'content_path': '/content/0000', 'path': '/etc/foo.cfg'},
              {'content_path': '/content/0001', 'path': '/etc/bar/bar.cfg'}],
    'hostname': 'sm-foo-test.novalocal',
    'meta': {'dsmode': 'local', 'my-meta': 'my-value'},
    'name': 'sm-foo-test',
    'public_keys': {'mykey': PUBKEY},
    'uuid': 'b0fa911b-69d4-4476-bbe2-1c92bff6535c'}

CONTENT_0 = 'This is contents of /etc/foo.cfg\n'
CONTENT_1 = '# this is /etc/bar/bar.cfg\n'

CFG_DRIVE_FILES_V2 = {
  'ec2/2009-04-04/meta-data.json': json.dumps(EC2_META),
  'ec2/2009-04-04/user-data': USER_DATA,
  'ec2/latest/meta-data.json': json.dumps(EC2_META),
  'ec2/latest/user-data': USER_DATA,
  'openstack/2012-08-10/meta_data.json': json.dumps(OSTACK_META),
  'openstack/2012-08-10/user_data': USER_DATA,
  'openstack/content/0000': CONTENT_0,
  'openstack/content/0001': CONTENT_1,
  'openstack/latest/meta_data.json': json.dumps(OSTACK_META),
  'openstack/latest/user_data': USER_DATA}


class TestConfigDriveDataSource(TestCase):

    def setUp(self):
        super(TestConfigDriveDataSource, self).setUp()
        self.tmp = tempfile.mkdtemp()

    def tearDown(self):
        try:
            shutil.rmtree(self.tmp)
        except OSError:
            pass

    def test_dir_valid(self):
        """Verify a dir is read as such."""

        populate_dir(self.tmp, CFG_DRIVE_FILES_V2)

        found = ds.read_config_drive_dir(self.tmp)

        expected_md = copy(OSTACK_META)
        expected_md['instance-id'] = expected_md['uuid']

        self.assertEqual(USER_DATA, found['userdata'])
        self.assertEqual(expected_md, found['metadata'])
        self.assertEqual(found['files']['/etc/foo.cfg'], CONTENT_0)
        self.assertEqual(found['files']['/etc/bar/bar.cfg'], CONTENT_1)

    def test_seed_dir_valid_extra(self):
        """Verify extra files do not affect datasource validity."""

        data = copy(CFG_DRIVE_FILES_V2)
        data["myfoofile.txt"] = "myfoocontent"
        data["openstack/latest/random-file.txt"] = "random-content"

        populate_dir(self.tmp, data)

        found = ds.read_config_drive_dir(self.tmp)

        expected_md = copy(OSTACK_META)
        expected_md['instance-id'] = expected_md['uuid']

        self.assertEqual(expected_md, found['metadata'])

    def test_seed_dir_bad_json_metadata(self):
        """Verify that bad json in metadata raises BrokenConfigDriveDir."""
        data = copy(CFG_DRIVE_FILES_V2)

        data["openstack/2012-08-10/meta_data.json"] = "non-json garbage {}"
        data["openstack/latest/meta_data.json"] = "non-json garbage {}"

        populate_dir(self.tmp, data)

        self.assertRaises(ds.BrokenConfigDriveDir,
                          ds.read_config_drive_dir, self.tmp)

    def test_seed_dir_no_configdrive(self):
        """Verify that no metadata raises NonConfigDriveDir."""

        my_d = os.path.join(self.tmp, "non-configdrive")
        data = copy(CFG_DRIVE_FILES_V2)
        data["myfoofile.txt"] = "myfoocontent"
        data["openstack/latest/random-file.txt"] = "random-content"
        data["content/foo"] = "foocontent"

        self.assertRaises(ds.NonConfigDriveDir,
                          ds.read_config_drive_dir, my_d)

    def test_seed_dir_missing(self):
        """Verify that missing seed_dir raises NonConfigDriveDir."""
        my_d = os.path.join(self.tmp, "nonexistantdirectory")
        self.assertRaises(ds.NonConfigDriveDir,
                          ds.read_config_drive_dir, my_d)

    def test_find_candidates(self):
        devs_with_answers = {}

        def my_devs_with(criteria):
            return devs_with_answers[criteria]

        def my_is_partition(dev):
            return dev[-1] in "0123456789" and not dev.startswith("sr")

        try:
            orig_find_devs_with = util.find_devs_with
            util.find_devs_with = my_devs_with

            orig_is_partition = util.is_partition
            util.is_partition = my_is_partition

            devs_with_answers = {"TYPE=vfat": [],
                "TYPE=iso9660": ["/dev/vdb"],
                "LABEL=config-2": ["/dev/vdb"],
            }
            self.assertEqual(["/dev/vdb"], ds.find_candidate_devs())

            # add a vfat item
            # zdd reverse sorts after vdb, but config-2 label is preferred
            devs_with_answers['TYPE=vfat'] = ["/dev/zdd"]
            self.assertEqual(["/dev/vdb", "/dev/zdd"],
                             ds.find_candidate_devs())

            # verify that partitions are not considered
            devs_with_answers = {"TYPE=vfat": ["/dev/sda1"],
                "TYPE=iso9660": [], "LABEL=config-2": ["/dev/vdb3"]}
            self.assertEqual([], ds.find_candidate_devs())

        finally:
            util.find_devs_with = orig_find_devs_with
            util.is_partition = orig_is_partition

    def test_pubkeys_v2(self):
        """Verify that public-keys work in config-drive-v2."""
        populate_dir(self.tmp, CFG_DRIVE_FILES_V2)
        myds = cfg_ds_from_dir(self.tmp)
        self.assertEqual(myds.get_public_ssh_keys(),
           [OSTACK_META['public_keys']['mykey']])


def cfg_ds_from_dir(seed_d):
    found = ds.read_config_drive_dir(seed_d)
    cfg_ds = ds.DataSourceConfigDrive(settings.CFG_BUILTIN, None,
                                      helpers.Paths({}))
    populate_ds_from_read_config(cfg_ds, seed_d, found)
    return cfg_ds


def populate_ds_from_read_config(cfg_ds, source, results):
    """Patch the DataSourceConfigDrive from the results of
    read_config_drive_dir hopefully in line with what it would have
    if cfg_ds.get_data had been successfully called"""
    cfg_ds.source = source
    cfg_ds.metadata = results.get('metadata')
    cfg_ds.ec2_metadata = results.get('ec2-metadata')
    cfg_ds.userdata_raw = results.get('userdata')
    cfg_ds.version = results.get('cfgdrive_ver')


def populate_dir(seed_dir, files):
    for (name, content) in files.iteritems():
        path = os.path.join(seed_dir, name)
        dirname = os.path.dirname(path)
        if not os.path.isdir(dirname):
            os.makedirs(dirname)
        with open(path, "w") as fp:
            fp.write(content)
            fp.close()

# vi: ts=4 expandtab