add functions to set items in local.conf

This commit is contained in:
Sean Dague 2017-01-16 13:31:53 -05:00
parent a0f574ab97
commit 925b1bc682
2 changed files with 126 additions and 0 deletions

View File

@ -173,3 +173,41 @@ class LocalConf(object):
with open(target, "a+") as f:
for line in self._section("local", "localrc"):
f.write(line)
def _at_insert_point_local(self, name, func):
temp = tempfile.NamedTemporaryFile(mode='r')
shutil.copyfile(self.fname, temp.name)
in_meta = False
done = False
with open(self.fname, "w+") as writer:
with open(temp.name) as reader:
for line in reader.readlines():
if done:
writer.write(line)
continue
if re.match(re.escape("[[local|localrc]]"), line):
in_meta = True
writer.write(line)
elif re.match("\[\[.*\|.*\]\]", line):
# if we're not done yet, we
if in_meta:
func(writer, None)
writer.write(line)
done = True
in_meta = False
continue
elif re.match("\s*%s\s*\=" % re.escape(name), line):
# we found our key, pass to the writer func
func(writer, line)
done = True
else:
# write out whatever we find
writer.write(line)
if not done:
func(writer, None)
def set_local(self, name, value):
def _do_set(writer, line):
writer.write("%s = %s\n" % (name, value))
self._at_insert_point_local(name, _do_set)

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@ -0,0 +1,88 @@
# Copyright 2017 IBM
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# Implementation of ini add / remove for devstack. We don't use the
# python ConfigFile parser because that ends up rewriting the entire
# file and doesn't ensure comments remain.
import fixtures
import os.path
import testtools
from devstack import dsconf
BASIC = """
[[local|localrc]]
a = b
c = d
f = 1
[[post-config|$NEUTRON_CONF]]
[DEFAULT]
global_physnet_mtu=1450
[[post-config|$NOVA_CONF]]
[upgrade_levels]
compute = auto
"""
RESULT1 = """
[[local|localrc]]
a = b
c = d
f = 1
g = 2
[[post-config|$NEUTRON_CONF]]
[DEFAULT]
global_physnet_mtu=1450
[[post-config|$NOVA_CONF]]
[upgrade_levels]
compute = auto
"""
RESULT2 = """
[[local|localrc]]
a = 2
c = d
f = 1
[[post-config|$NEUTRON_CONF]]
[DEFAULT]
global_physnet_mtu=1450
[[post-config|$NOVA_CONF]]
[upgrade_levels]
compute = auto
"""
class TestLcSet(testtools.TestCase):
def setUp(self):
super(TestLcSet, self).setUp()
self._path = self.useFixture(fixtures.TempDir()).path
self._path += "/local.conf"
with open(self._path, "w") as f:
f.write(BASIC)
def test_set_new(self):
conf = dsconf.LocalConf(self._path)
conf.set_local("g", "2")
with open(self._path) as f:
content = f.read()
self.assertEqual(content, RESULT1)
def test_set_existing(self):
conf = dsconf.LocalConf(self._path)
conf.set_local("a", "2")
with open(self._path) as f:
content = f.read()
self.assertEqual(content, RESULT2)