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"""Tests for handling of userdata within cloud init."""
import StringIO
import logging
import os
from email.mime.base import MIMEBase
from cloudinit import handlers
from cloudinit import helpers as c_helpers
from cloudinit import log
from cloudinit import sources
from cloudinit import stages
from cloudinit import util
INSTANCE_ID = "i-testing"
from tests.unittests import helpers
class FakeDataSource(sources.DataSource):
def __init__(self, userdata):
sources.DataSource.__init__(self, {}, None, None)
self.metadata = {'instance-id': INSTANCE_ID}
self.userdata_raw = userdata
# FIXME: these tests shouldn't be checking log output??
# Weirddddd...
class TestConsumeUserData(helpers.FilesystemMockingTestCase):
def setUp(self):
helpers.FilesystemMockingTestCase.setUp(self)
self._log = None
self._log_file = None
self._log_handler = None
def tearDown(self):
helpers.FilesystemMockingTestCase.tearDown(self)
if self._log_handler and self._log:
self._log.removeHandler(self._log_handler)
def capture_log(self, lvl=logging.DEBUG):
log_file = StringIO.StringIO()
self._log_handler = logging.StreamHandler(log_file)
self._log_handler.setLevel(lvl)
self._log = log.getLogger()
self._log.addHandler(self._log_handler)
return log_file
def test_merging_cloud_config(self):
blob = '''
#cloud-config
a: b
e: f
run:
- b
- c
'''
message1 = MIMEBase("text", "cloud-config")
message1['Merge-Type'] = 'dict()+list(extend)+str(append)'
message1.set_payload(blob)
blob2 = '''
#cloud-config
a: e
e: g
run:
- stuff
- morestuff
'''
message2 = MIMEBase("text", "cloud-config")
message2['X-Merge-Type'] = 'dict()+list(extend)+str()'
message2.set_payload(blob2)
blob3 = '''
#cloud-config
e:
- 1
- 2
- 3
p: 1
'''
message3 = MIMEBase("text", "cloud-config")
message3['Merge-Type'] = 'dict()+list()+str()'
message3.set_payload(blob3)
messages = [message1, message2, message3]
paths = c_helpers.Paths({}, ds=FakeDataSource(''))
cloud_cfg = handlers.cloud_config.CloudConfigPartHandler(paths)
new_root = self.makeDir()
self.patchUtils(new_root)
self.patchOS(new_root)
cloud_cfg.handle_part(None, handlers.CONTENT_START, None, None, None,
None)
for i, m in enumerate(messages):
headers = dict(m)
fn = "part-%s" % (i + 1)
payload = m.get_payload(decode=True)
cloud_cfg.handle_part(None, headers['Content-Type'],
fn, payload, None, headers)
cloud_cfg.handle_part(None, handlers.CONTENT_END, None, None, None,
None)
contents = util.load_file(paths.get_ipath('cloud_config'))
contents = util.load_yaml(contents)
self.assertEquals(contents['run'], ['b', 'c', 'stuff', 'morestuff'])
self.assertEquals(contents['a'], 'be')
self.assertEquals(contents['e'], 'fg')
self.assertEquals(contents['p'], 1)
def test_unhandled_type_warning(self):
"""Raw text without magic is ignored but shows warning."""
ci = stages.Init()
data = "arbitrary text\n"
ci.datasource = FakeDataSource(data)
mock_write = self.mocker.replace("cloudinit.util.write_file",
passthrough=False)
mock_write(ci.paths.get_ipath("cloud_config"), "", 0600)
self.mocker.replay()
log_file = self.capture_log(logging.WARNING)
ci.fetch()
ci.consume_userdata()
self.assertIn(
"Unhandled non-multipart (text/x-not-multipart) userdata:",
log_file.getvalue())
def test_mime_text_plain(self):
"""Mime message of type text/plain is ignored but shows warning."""
ci = stages.Init()
message = MIMEBase("text", "plain")
message.set_payload("Just text")
ci.datasource = FakeDataSource(message.as_string())
mock_write = self.mocker.replace("cloudinit.util.write_file",
passthrough=False)
mock_write(ci.paths.get_ipath("cloud_config"), "", 0600)
self.mocker.replay()
log_file = self.capture_log(logging.WARNING)
ci.fetch()
ci.consume_userdata()
self.assertIn(
"Unhandled unknown content-type (text/plain)",
log_file.getvalue())
def test_shellscript(self):
"""Raw text starting #!/bin/sh is treated as script."""
ci = stages.Init()
script = "#!/bin/sh\necho hello\n"
ci.datasource = FakeDataSource(script)
outpath = os.path.join(ci.paths.get_ipath_cur("scripts"), "part-001")
mock_write = self.mocker.replace("cloudinit.util.write_file",
passthrough=False)
mock_write(ci.paths.get_ipath("cloud_config"), "", 0600)
mock_write(outpath, script, 0700)
self.mocker.replay()
log_file = self.capture_log(logging.WARNING)
ci.fetch()
ci.consume_userdata()
self.assertEqual("", log_file.getvalue())
def test_mime_text_x_shellscript(self):
"""Mime message of type text/x-shellscript is treated as script."""
ci = stages.Init()
script = "#!/bin/sh\necho hello\n"
message = MIMEBase("text", "x-shellscript")
message.set_payload(script)
ci.datasource = FakeDataSource(message.as_string())
outpath = os.path.join(ci.paths.get_ipath_cur("scripts"), "part-001")
mock_write = self.mocker.replace("cloudinit.util.write_file",
passthrough=False)
mock_write(ci.paths.get_ipath("cloud_config"), "", 0600)
mock_write(outpath, script, 0700)
self.mocker.replay()
log_file = self.capture_log(logging.WARNING)
ci.fetch()
ci.consume_userdata()
self.assertEqual("", log_file.getvalue())
def test_mime_text_plain_shell(self):
"""Mime type text/plain starting #!/bin/sh is treated as script."""
ci = stages.Init()
script = "#!/bin/sh\necho hello\n"
message = MIMEBase("text", "plain")
message.set_payload(script)
ci.datasource = FakeDataSource(message.as_string())
outpath = os.path.join(ci.paths.get_ipath_cur("scripts"), "part-001")
mock_write = self.mocker.replace("cloudinit.util.write_file",
passthrough=False)
mock_write(outpath, script, 0700)
mock_write(ci.paths.get_ipath("cloud_config"), "", 0600)
self.mocker.replay()
log_file = self.capture_log(logging.WARNING)
ci.fetch()
ci.consume_userdata()
self.assertEqual("", log_file.getvalue())
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