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# Copyright 2012 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Test composition of kernel command lines."""
from __future__ import (
absolute_import,
print_function,
unicode_literals,
)
__metaclass__ = type
__all__ = [
"make_kernel_parameters",
]
import os
from maastesting.factory import factory
from maastesting.matchers import ContainsAll
from maastesting.testcase import TestCase
from provisioningserver import kernel_opts
from provisioningserver.kernel_opts import (
compose_kernel_command_line,
compose_preseed_opt,
EphemeralImagesDirectoryNotFound,
get_last_directory,
ISCSI_TARGET_NAME_PREFIX,
KernelParameters,
)
from provisioningserver.testing.config import ConfigFixture
from testtools.matchers import (
Contains,
Not,
)
def make_kernel_parameters(**parms):
"""Make a randomly populated `KernelParameters` instance."""
parms.update(
{field: factory.make_name(field)
for field in KernelParameters._fields
if field not in parms})
return KernelParameters(**parms)
class TestUtilitiesKernelOpts(TestCase):
def test_get_last_directory(self):
root = self.make_dir()
dir1 = os.path.join(root, '20120405')
dir2 = os.path.join(root, '20120105')
dir3 = os.path.join(root, '20120403')
os.makedirs(dir1)
os.makedirs(dir2)
os.makedirs(dir3)
self.assertEqual(dir1, get_last_directory(root))
def test_kernel_parameters_callable(self):
# KernelParameters instances are callable; an alias for _replace().
params = make_kernel_parameters()
self.assertTrue(callable(params))
self.assertIs(params._replace.im_func, params.__call__.im_func)
class TestKernelOpts(TestCase):
def test_compose_kernel_command_line_includes_preseed_url(self):
params = make_kernel_parameters()
self.assertIn(
"auto url=%s" % params.preseed_url,
compose_kernel_command_line(params))
def test_install_compose_kernel_command_line_includes_name_domain(self):
params = make_kernel_parameters(purpose="install")
self.assertThat(
compose_kernel_command_line(params),
ContainsAll([
"hostname=%s" % params.hostname,
"domain=%s" % params.domain,
]))
def test_install_compose_kernel_command_line_omits_domain_if_omitted(self):
params = make_kernel_parameters(purpose="install", domain=None)
kernel_command_line = compose_kernel_command_line(params)
self.assertIn("hostname=%s" % params.hostname, kernel_command_line)
self.assertNotIn('domain=', kernel_command_line)
def test_install_compose_kernel_command_line_includes_locale(self):
params = make_kernel_parameters(purpose="install")
locale = "en_US"
self.assertIn(
"locale=%s" % locale,
compose_kernel_command_line(params))
def test_install_compose_kernel_command_line_includes_log_settings(self):
params = make_kernel_parameters(purpose="install")
# Port 514 (UDP) is syslog.
log_port = "514"
self.assertThat(
compose_kernel_command_line(params),
ContainsAll([
"log_host=%s" % params.log_host,
"log_port=%s" % log_port,
]))
def test_install_compose_kernel_command_line_includes_di_settings(self):
params = make_kernel_parameters(purpose="install")
self.assertThat(
compose_kernel_command_line(params),
Contains("text priority=critical"))
def test_install_compose_kernel_command_line_inc_purpose_opts(self):
# The result of compose_kernel_command_line includes the purpose
# options for a non "commissioning" node.
params = make_kernel_parameters(purpose="install")
self.assertIn(
"netcfg/choose_interface=auto",
compose_kernel_command_line(params))
def test_commissioning_compose_kernel_command_line_inc_purpose_opts(self):
# The result of compose_kernel_command_line includes the purpose
# options for a non "commissioning" node.
get_ephemeral_name = self.patch(kernel_opts, "get_ephemeral_name")
get_ephemeral_name.return_value = "RELEASE-ARCH"
params = make_kernel_parameters(purpose="commissioning")
cmdline = compose_kernel_command_line(params)
self.assertThat(
cmdline,
ContainsAll([
"root=LABEL=cloudimg-rootfs",
"iscsi_initiator=",
"overlayroot=tmpfs",
"ip=::::%s:BOOTIF" % params.hostname]))
def test_compose_kernel_command_line_inc_common_opts(self):
# Test that some kernel arguments appear on both commissioning
# and install command lines.
get_ephemeral_name = self.patch(kernel_opts, "get_ephemeral_name")
get_ephemeral_name.return_value = "RELEASE-ARCH"
expected = ["nomodeset"]
params = make_kernel_parameters(
purpose="commissioning", arch="i386")
cmdline = compose_kernel_command_line(params)
self.assertThat(cmdline, ContainsAll(expected))
params = make_kernel_parameters(
purpose="install", arch="i386")
cmdline = compose_kernel_command_line(params)
self.assertThat(cmdline, ContainsAll(expected))
def create_ephemeral_info(self, name, arch, release):
"""Create a pseudo-real ephemeral info file."""
ephemeral_info = """
release=%s
stream=ephemeral
label=release
serial=20120424
arch=%s
name=%s
""" % (release, arch, name)
ephemeral_root = self.make_dir()
config = {"boot": {"ephemeral": {"directory": ephemeral_root}}}
self.useFixture(ConfigFixture(config))
ephemeral_dir = os.path.join(
ephemeral_root, release, 'ephemeral', arch, release)
os.makedirs(ephemeral_dir)
factory.make_file(
ephemeral_dir, name='info', contents=ephemeral_info)
def test_compose_kernel_command_line_inc_purpose_opts_comm_node(self):
# The result of compose_kernel_command_line includes the purpose
# options for a "commissioning" node.
ephemeral_name = factory.make_name("ephemeral")
params = make_kernel_parameters(purpose="commissioning")
self.create_ephemeral_info(
ephemeral_name, params.arch, params.release)
self.assertThat(
compose_kernel_command_line(params),
ContainsAll([
"iscsi_target_name=%s:%s" % (
ISCSI_TARGET_NAME_PREFIX, ephemeral_name),
"iscsi_target_port=3260",
"iscsi_target_ip=%s" % params.fs_host,
]))
def test_compose_kernel_command_line_reports_error_about_missing_dir(self):
params = make_kernel_parameters(purpose="commissioning")
missing_dir = factory.make_name('missing-dir')
config = {"boot": {"ephemeral": {"directory": missing_dir}}}
self.useFixture(ConfigFixture(config))
self.assertRaises(
EphemeralImagesDirectoryNotFound,
compose_kernel_command_line, params)
def test_compose_preseed_kernel_opt_returns_kernel_option(self):
dummy_preseed_url = factory.make_name("url")
self.assertEqual(
"auto url=%s" % dummy_preseed_url,
compose_preseed_opt(dummy_preseed_url))
def test_compose_kernel_command_line_inc_arm_specific_option(self):
params = make_kernel_parameters(arch="armhf", subarch="highbank")
self.assertThat(
compose_kernel_command_line(params),
Contains("console=ttyAMA0"))
def test_compose_kernel_command_line_not_inc_arm_specific_option(self):
params = make_kernel_parameters(arch="i386")
self.assertThat(
compose_kernel_command_line(params),
Not(Contains("console=ttyAMA0")))
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