cloud-init/cloudinit/CloudConfig/cc_apt_pipelining.py
Scott Moser 44ea3b08d8 Some cleanups before merge.
* removed the 'CLOUD-INIT-IGNORE' section, as we're just blindly writing
  the file now. removed the now-unnecessary import of 're' and 'os'
* removed try/except block around write_apt_snippet.  This will bubble
  up and cloud-init will let it through even to the console.  Catching
  it and turning it into a debug would just hide it.
* removed 'default' as a synonym for 'whatever cloud-init thinks is best'
  If people are going to change this, I'd rather they be specific.
* supported value of "0"
* fixed some complaints from 
   ./tools/run-pylint cloudinit/CloudConfig/cc_apt_pipelining.py
2012-03-09 09:50:04 -05:00

54 lines
1.8 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/>.
import cloudinit.util as util
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 == "false":
write_apt_snippet("0", log)
elif apt_pipe_value in ("none", "unchanged", "os"):
return
elif apt_pipe_value in str(range(0, 6)):
write_apt_snippet(apt_pipe_value, log)
else:
log.warn("Invalid option for apt_pipeling: %s" % apt_pipe_value)
def write_apt_snippet(setting, log, f_name=default_file):
""" Writes f_name with apt pipeline depth 'setting' """
acquire_pipeline_depth = 'Acquire::http::Pipeline-Depth "%s";\n'
file_contents = ("//Written by cloud-init per 'apt_pipelining'\n"
+ (acquire_pipeline_depth % setting))
util.write_file(f_name, file_contents)
log.debug("Wrote %s with APT pipeline setting" % f_name)