diff options
| -rw-r--r-- | cloudinit/distros/debian.py | 48 | ||||
| -rw-r--r-- | tests/unittests/helpers.py | 12 | ||||
| -rw-r--r-- | tests/unittests/test_distros/test_debian.py | 82 |
3 files changed, 131 insertions, 11 deletions
diff --git a/cloudinit/distros/debian.py b/cloudinit/distros/debian.py index d06d46a6..abfb81f4 100644 --- a/cloudinit/distros/debian.py +++ b/cloudinit/distros/debian.py @@ -37,11 +37,11 @@ ENI_HEADER = """# This file is generated from information provided by """ NETWORK_CONF_FN = "/etc/network/interfaces.d/50-cloud-init.cfg" +LOCALE_CONF_FN = "/etc/default/locale" class Distro(distros.Distro): hostname_conf_fn = "/etc/hostname" - locale_conf_fn = "/etc/default/locale" network_conf_fn = { "eni": "/etc/network/interfaces.d/50-cloud-init.cfg", "netplan": "/etc/netplan/50-cloud-init.yaml" @@ -64,16 +64,8 @@ class Distro(distros.Distro): def apply_locale(self, locale, out_fn=None): if not out_fn: - out_fn = self.locale_conf_fn - util.subp(['locale-gen', locale], capture=False) - util.subp(['update-locale', locale], capture=False) - # "" provides trailing newline during join - lines = [ - util.make_header(), - 'LANG="%s"' % (locale), - "", - ] - util.write_file(out_fn, "\n".join(lines)) + out_fn = LOCALE_CONF_FN + apply_locale(locale, out_fn) def install_packages(self, pkglist): self.update_package_sources() @@ -225,4 +217,38 @@ def _maybe_remove_legacy_eth0(path="/etc/network/interfaces.d/eth0.cfg"): LOG.warning(msg) + +def apply_locale(locale, sys_path=LOCALE_CONF_FN, keyname='LANG'): + """Apply the locale. + + Run locale-gen for the provided locale and set the default + system variable `keyname` appropriately in the provided `sys_path`. + + If sys_path indicates that `keyname` is already set to `locale` + then no changes will be made and locale-gen not called. + This allows images built with a locale already generated to not re-run + locale-gen which can be very heavy. + """ + if not locale: + raise ValueError('Failed to provide locale value.') + + if not sys_path: + raise ValueError('Invalid path: %s' % sys_path) + + if os.path.exists(sys_path): + locale_content = util.load_file(sys_path) + # if LANG isn't present, regen + sys_defaults = util.load_shell_content(locale_content) + sys_val = sys_defaults.get(keyname, "") + if sys_val.lower() == locale.lower(): + LOG.debug( + "System has '%s=%s' requested '%s', skipping regeneration.", + keyname, sys_val, locale) + return + + util.subp(['locale-gen', locale], capture=False) + util.subp( + ['update-locale', '--locale-file=' + sys_path, + '%s=%s' % (keyname, locale)], capture=False) + # vi: ts=4 expandtab diff --git a/tests/unittests/helpers.py b/tests/unittests/helpers.py index 6691cf82..08c5c469 100644 --- a/tests/unittests/helpers.py +++ b/tests/unittests/helpers.py @@ -376,4 +376,16 @@ except AttributeError: return wrapper return decorator + +# older versions of mock do not have the useful 'assert_not_called' +if not hasattr(mock.Mock, 'assert_not_called'): + def __mock_assert_not_called(mmock): + if mmock.call_count != 0: + msg = ("[citest] Expected '%s' to not have been called. " + "Called %s times." % + (mmock._mock_name or 'mock', mmock.call_count)) + raise AssertionError(msg) + mock.Mock.assert_not_called = __mock_assert_not_called + + # vi: ts=4 expandtab diff --git a/tests/unittests/test_distros/test_debian.py b/tests/unittests/test_distros/test_debian.py new file mode 100644 index 00000000..2330ad52 --- /dev/null +++ b/tests/unittests/test_distros/test_debian.py @@ -0,0 +1,82 @@ +# This file is part of cloud-init. See LICENSE file for license information. + +from ..helpers import (CiTestCase, mock) + +from cloudinit.distros.debian import apply_locale +from cloudinit import util + + +@mock.patch("cloudinit.distros.debian.util.subp") +class TestDebianApplyLocale(CiTestCase): + def test_no_rerun(self, m_subp): + """If system has defined locale, no re-run is expected.""" + spath = self.tmp_path("default-locale") + m_subp.return_value = (None, None) + locale = 'en_US.UTF-8' + util.write_file(spath, 'LANG=%s\n' % locale, omode="w") + apply_locale(locale, sys_path=spath) + m_subp.assert_not_called() + + def test_rerun_if_different(self, m_subp): + """If system has different locale, locale-gen should be called.""" + spath = self.tmp_path("default-locale") + m_subp.return_value = (None, None) + locale = 'en_US.UTF-8' + util.write_file(spath, 'LANG=fr_FR.UTF-8', omode="w") + apply_locale(locale, sys_path=spath) + self.assertEqual( + [['locale-gen', locale], + ['update-locale', '--locale-file=' + spath, 'LANG=%s' % locale]], + [p[0][0] for p in m_subp.call_args_list]) + + def test_rerun_if_no_file(self, m_subp): + """If system has no locale file, locale-gen should be called.""" + spath = self.tmp_path("default-locale") + m_subp.return_value = (None, None) + locale = 'en_US.UTF-8' + apply_locale(locale, sys_path=spath) + self.assertEqual( + [['locale-gen', locale], + ['update-locale', '--locale-file=' + spath, 'LANG=%s' % locale]], + [p[0][0] for p in m_subp.call_args_list]) + + def test_rerun_on_unset_system_locale(self, m_subp): + """If system has unset locale, locale-gen should be called.""" + m_subp.return_value = (None, None) + spath = self.tmp_path("default-locale") + locale = 'en_US.UTF-8' + util.write_file(spath, 'LANG=', omode="w") + apply_locale(locale, sys_path=spath) + self.assertEqual( + [['locale-gen', locale], + ['update-locale', '--locale-file=' + spath, 'LANG=%s' % locale]], + [p[0][0] for p in m_subp.call_args_list]) + + def test_rerun_on_mismatched_keys(self, m_subp): + """If key is LC_ALL and system has only LANG, rerun is expected.""" + m_subp.return_value = (None, None) + spath = self.tmp_path("default-locale") + locale = 'en_US.UTF-8' + util.write_file(spath, 'LANG=', omode="w") + apply_locale(locale, sys_path=spath, keyname='LC_ALL') + self.assertEqual( + [['locale-gen', locale], + ['update-locale', '--locale-file=' + spath, + 'LC_ALL=%s' % locale]], + [p[0][0] for p in m_subp.call_args_list]) + + def test_falseish_locale_raises_valueerror(self, m_subp): + """locale as None or "" is invalid and should raise ValueError.""" + + with self.assertRaises(ValueError) as ctext_m: + apply_locale(None) + m_subp.assert_not_called() + + self.assertEqual( + 'Failed to provide locale value.', str(ctext_m.exception)) + + with self.assertRaises(ValueError) as ctext_m: + apply_locale("") + m_subp.assert_not_called() + self.assertEqual( + 'Failed to provide locale value.', str(ctext_m.exception)) |