60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
# 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/>.
|
|
|
|
from cloudinit import util
|
|
from cloudinit.settings import PER_INSTANCE
|
|
|
|
frequency = PER_INSTANCE
|
|
|
|
distros = ['ubuntu', 'debian']
|
|
|
|
DEFAULT_FILE = "/etc/apt/apt.conf.d/90cloud-init-pipelining"
|
|
|
|
APT_PIPE_TPL = ("//Written by cloud-init per 'apt_pipelining'\n"
|
|
'Acquire::http::Pipeline-Depth "%s";\n')
|
|
|
|
# Acquire::http::Pipeline-Depth can be a value
|
|
# from 0 to 5 indicating how many outstanding requests APT should send.
|
|
# A value of zero MUST be specified if the remote host does not properly linger
|
|
# on TCP connections - otherwise data corruption will occur.
|
|
|
|
|
|
def handle(_name, cfg, cloud, log, _args):
|
|
|
|
apt_pipe_value = util.get_cfg_option_str(cfg, "apt_pipelining", False)
|
|
apt_pipe_value_s = str(apt_pipe_value).lower().strip()
|
|
|
|
if apt_pipe_value_s == "false":
|
|
write_apt_snippet(cloud, "0", log, DEFAULT_FILE)
|
|
elif apt_pipe_value_s in ("none", "unchanged", "os"):
|
|
return
|
|
elif apt_pipe_value_s in [str(b) for b in xrange(0, 6)]:
|
|
write_apt_snippet(cloud, apt_pipe_value_s, log, DEFAULT_FILE)
|
|
else:
|
|
log.warn("Invalid option for apt_pipeling: %s", apt_pipe_value)
|
|
|
|
|
|
def write_apt_snippet(cloud, setting, log, f_name):
|
|
""" Writes f_name with apt pipeline depth 'setting' """
|
|
|
|
file_contents = APT_PIPE_TPL % (setting)
|
|
|
|
util.write_file(cloud.paths.join(False, f_name), file_contents)
|
|
|
|
log.debug("Wrote %s with apt pipeline depth setting %s", f_name, setting)
|