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# vi: ts=4 expandtab
#
# Copyright (C) 2011 Canonical Ltd.
#
# Author: Ben Howard <ben.howard@canonical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import cloudinit.util as util
import re
import os
from cloudinit.CloudConfig import per_instance
frequency = per_instance
default_file = "/etc/apt/apt.conf.d/90cloud-init-pipeling"
def handle(_name, cfg, cloud, log, _args):
apt_pipe_value = util.get_cfg_option_str(cfg, "apt_pipelining", False)
apt_pipe_value = str(apt_pipe_value).lower()
if apt_pipe_value in ("false", "default", False):
write_apt_snippet(0, log)
elif apt_pipe_value in ("none", "unchanged", "os"):
return
elif apt_pipe_value in str(range(1, 5)):
write_apt_snippet(apt_pipe_value, log)
else:
log.warn("Invalid option for apt_pipeling")
def write_apt_snippet(setting, log, f_name=default_file):
"""
Reads f_name and determines if the setting matches or not. Sets to
desired value
"""
acquire_pipeline_depth = 'Acquire::http::Pipeline-Depth "%s";\n'
try:
if os.path.exists(f_name):
skip_re = re.compile('^//CLOUD-INIT-IGNORE.*')
for line in tweak.readlines():
if skip_re.match(line):
tweak.close()
return
tweak.close()
file_contents = ("//Cloud-init Tweaks\n//Disables APT HTTP pipelining"\
"\n" + (acquire_pipeline_depth % setting))
util.write_file(f_name, file_contents)
log.debug("Wrote %s with APT pipeline setting" % f_name )
except IOError as e:
log.debug("Unable to update pipeline settings in %s\n%s" % (f_name, e))
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