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# Copyright (C) 2011 Canonical Ltd.
#
# Author: Ben Howard <ben.howard@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""Apt Pipelining: configure apt pipelining."""
import logging
from cloudinit import util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
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.
meta: MetaSchema = {
"id": "cc_apt_pipelining",
"distros": ["ubuntu", "debian"],
"frequency": PER_INSTANCE,
"activate_by_schema_keys": ["apt_pipelining"],
} # type: ignore
def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
apt_pipe_value = cfg.get("apt_pipelining", "os")
apt_pipe_value_s = str(apt_pipe_value).lower().strip()
if apt_pipe_value_s == "false":
write_apt_snippet("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 range(6)]:
write_apt_snippet(apt_pipe_value_s, LOG, DEFAULT_FILE)
else:
LOG.warning("Invalid option for apt_pipelining: %s", apt_pipe_value)
def write_apt_snippet(setting, log, f_name):
"""Writes f_name with apt pipeline depth 'setting'."""
file_contents = APT_PIPE_TPL % (setting)
util.write_file(f_name, file_contents)
log.debug("Wrote %s with apt pipeline depth setting %s", f_name, setting)