60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2011 Canonical Ltd.
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#
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# Author: Ben Howard <ben.howard@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from cloudinit.settings import PER_INSTANCE
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from cloudinit import util
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frequency = PER_INSTANCE
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distros = ['ubuntu', 'debian']
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DEFAULT_FILE = "/etc/apt/apt.conf.d/90cloud-init-pipelining"
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APT_PIPE_TPL = ("//Written by cloud-init per 'apt_pipelining'\n"
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'Acquire::http::Pipeline-Depth "%s";\n')
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# Acquire::http::Pipeline-Depth can be a value
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# from 0 to 5 indicating how many outstanding requests APT should send.
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# A value of zero MUST be specified if the remote host does not properly linger
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# on TCP connections - otherwise data corruption will occur.
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def handle(_name, cfg, cloud, log, _args):
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apt_pipe_value = util.get_cfg_option_str(cfg, "apt_pipelining", False)
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apt_pipe_value_s = str(apt_pipe_value).lower().strip()
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if apt_pipe_value_s == "false":
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write_apt_snippet(cloud, "0", log, DEFAULT_FILE)
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elif apt_pipe_value_s in ("none", "unchanged", "os"):
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return
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elif apt_pipe_value_s in [str(b) for b in xrange(0, 6)]:
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write_apt_snippet(cloud, apt_pipe_value_s, log, DEFAULT_FILE)
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else:
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log.warn("Invalid option for apt_pipeling: %s", apt_pipe_value)
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def write_apt_snippet(cloud, setting, log, f_name):
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"""Writes f_name with apt pipeline depth 'setting'."""
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file_contents = APT_PIPE_TPL % (setting)
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util.write_file(cloud.paths.join(False, f_name), file_contents)
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log.debug("Wrote %s with apt pipeline depth setting %s", f_name, setting)
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