FM / config

/snap/core18/2979/usr/lib/python3/dist-packages/cloudinit/config/

/snap/core18/2979/usr/lib/python3/dist-packages/cloudinit/config

Name	Size	Mode	Actions
schemas/	-	0755	rm
__pycache__/	-	0755	rm
cc_ansible.py	8568	0644	edit dl rm
cc_apk_configure.py	5883	0644	edit dl rm
cc_apt_configure.py	33237	0644	edit dl rm
cc_apt_pipelining.py	2888	0644	edit dl rm
cc_bootcmd.py	2940	0644	edit dl rm
cc_byobu.py	3757	0644	edit dl rm
cc_ca_certs.py	8251	0644	edit dl rm
cc_chef.py	14118	0644	edit dl rm
cc_disable_ec2_metadata.py	2093	0644	edit dl rm
cc_disk_setup.py	33115	0644	edit dl rm
cc_fan.py	3184	0644	edit dl rm
cc_final_message.py	3490	0644	edit dl rm
cc_growpart.py	19890	0644	edit dl rm
cc_grub_dpkg.py	5619	0644	edit dl rm
cc_install_hotplug.py	3901	0644	edit dl rm
cc_keyboard.py	2126	0644	edit dl rm
cc_keys_to_console.py	3713	0644	edit dl rm
cc_landscape.py	4976	0644	edit dl rm
cc_locale.py	1923	0644	edit dl rm
cc_lxd.py	18387	0644	edit dl rm
cc_mcollective.py	6349	0644	edit dl rm
cc_migrator.py	3599	0644	edit dl rm
cc_mounts.py	19486	0644	edit dl rm
cc_ntp.py	20172	0644	edit dl rm
cc_package_update_upgrade_install.py	4530	0644	edit dl rm
cc_phone_home.py	5636	0644	edit dl rm
cc_power_state_change.py	7838	0644	edit dl rm
cc_puppet.py	14066	0644	edit dl rm
cc_refresh_rmc_and_interface.py	5614	0644	edit dl rm
cc_reset_rmc.py	4642	0644	edit dl rm
cc_resizefs.py	10818	0644	edit dl rm
cc_resolv_conf.py	5130	0644	edit dl rm
cc_rh_subscription.py	17456	0644	edit dl rm
cc_rightscale_userdata.py	4407	0644	edit dl rm
cc_rsyslog.py	10001	0644	edit dl rm
cc_runcmd.py	2993	0644	edit dl rm
cc_salt_minion.py	5668	0644	edit dl rm
cc_scripts_per_boot.py	1717	0644	edit dl rm
cc_scripts_per_instance.py	1873	0644	edit dl rm
cc_scripts_per_once.py	1823	0644	edit dl rm
cc_scripts_user.py	1913	0644	edit dl rm
cc_scripts_vendor.py	2367	0644	edit dl rm
cc_seed_random.py	4928	0644	edit dl rm
cc_set_hostname.py	5012	0644	edit dl rm
cc_set_passwords.py	11315	0644	edit dl rm
cc_snap.py	6539	0644	edit dl rm
cc_spacewalk.py	3604	0644	edit dl rm
cc_ssh.py	14371	0644	edit dl rm
cc_ssh_authkey_fingerprints.py	4338	0644	edit dl rm
cc_ssh_import_id.py	5955	0644	edit dl rm
cc_timezone.py	1475	0644	edit dl rm
cc_ubuntu_advantage.py	17281	0644	edit dl rm
cc_ubuntu_autoinstall.py	4672	0644	edit dl rm
cc_ubuntu_drivers.py	4736	0644	edit dl rm
cc_update_etc_hosts.py	5235	0644	edit dl rm
cc_update_hostname.py	3721	0644	edit dl rm
cc_users_groups.py	7787	0644	edit dl rm
cc_wireguard.py	9507	0644	edit dl rm
cc_write_files.py	6910	0644	edit dl rm
cc_write_files_deferred.py	1718	0644	edit dl rm
cc_yum_add_repo.py	7653	0644	edit dl rm
cc_zypper_add_repo.py	6840	0644	edit dl rm
modules.py	11700	0644	edit dl rm
schema.py	44173	0644	edit dl rm
__init__.py	14	0644	edit dl rm

Edit: /snap/core18/2979/usr/lib/python3/dist-packages/cloudinit/config/cc_power_state_change.py (7838B)

# Copyright (C) 2011 Canonical Ltd.
#
# Author: Scott Moser <scott.moser@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.

"""Power State Change: Change power state"""

import errno
import os
import re
import subprocess
import time
from logging import Logger
from textwrap import dedent

from cloudinit import subp, util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.distros import ALL_DISTROS
from cloudinit.settings import PER_INSTANCE

frequency = PER_INSTANCE

EXIT_FAIL = 254

MODULE_DESCRIPTION = """\
This module handles shutdown/reboot after all config modules have been run. By
default it will take no action, and the system will keep running unless a
package installation/upgrade requires a system reboot (e.g. installing a new
kernel) and ``package_reboot_if_required`` is true.

Using this module ensures that cloud-init is entirely finished with
modules that would be executed.

An example to distinguish delay from timeout:

If you delay 5 (5 minutes) and have a timeout of
120 (2 minutes), then the max time until shutdown will be 7 minutes, though
it could be as soon as 5 minutes. Cloud-init will invoke 'shutdown +5' after
the process finishes, or when 'timeout' seconds have elapsed.

.. note::
    With Alpine Linux any message value specified is ignored as Alpine's halt,
    poweroff, and reboot commands do not support broadcasting a message.

"""

meta: MetaSchema = {
    "id": "cc_power_state_change",
    "name": "Power State Change",
    "title": "Change power state",
    "description": MODULE_DESCRIPTION,
    "distros": [ALL_DISTROS],
    "frequency": PER_INSTANCE,
    "examples": [
        dedent(
            """\
            power_state:
                delay: now
                mode: poweroff
                message: Powering off
                timeout: 2
                condition: true
            """
        ),
        dedent(
            """\
            power_state:
                delay: 30
                mode: reboot
                message: Rebooting machine
                condition: test -f /var/tmp/reboot_me
            """
        ),
    ],
    "activate_by_schema_keys": ["power_state"],
}

__doc__ = get_meta_doc(meta)

def givecmdline(pid):
    # Returns the cmdline for the given process id. In Linux we can use procfs
    # for this but on BSD there is /usr/bin/procstat.
    try:
        # Example output from procstat -c 1
        #   PID COMM             ARGS
        #     1 init             /bin/init --
        if util.is_FreeBSD():
            (output, _err) = subp.subp(["procstat", "-c", str(pid)])
            line = output.splitlines()[1]
            m = re.search(r"\d+ (\w|\.|-)+\s+(/\w.+)", line)
            return m.group(2)
        else:
            return util.load_file("/proc/%s/cmdline" % pid)
    except IOError:
        return None

def check_condition(cond, log=None):
    if isinstance(cond, bool):
        if log:
            log.debug("Static Condition: %s" % cond)
        return cond

pre = "check_condition command (%s): " % cond
    try:
        proc = subprocess.Popen(cond, shell=not isinstance(cond, list))
        proc.communicate()
        ret = proc.returncode
        if ret == 0:
            if log:
                log.debug(pre + "exited 0. condition met.")
            return True
        elif ret == 1:
            if log:
                log.debug(pre + "exited 1. condition not met.")
            return False
        else:
            if log:
                log.warning(
                    pre + "unexpected exit %s. " % ret + "do not apply change."
                )
            return False
    except Exception as e:
        if log:
            log.warning(pre + "Unexpected error: %s" % e)
        return False

def handle(
    name: str, cfg: Config, cloud: Cloud, log: Logger, args: list
) -> None:
    try:
        (args, timeout, condition) = load_power_state(cfg, cloud.distro)
        if args is None:
            log.debug("no power_state provided. doing nothing")
            return
    except Exception as e:
        log.warning("%s Not performing power state change!" % str(e))
        return

if condition is False:
        log.debug("Condition was false. Will not perform state change.")
        return

mypid = os.getpid()

cmdline = givecmdline(mypid)
    if not cmdline:
        log.warning("power_state: failed to get cmdline of current process")
        return

devnull_fp = open(os.devnull, "w")

log.debug("After pid %s ends, will execute: %s" % (mypid, " ".join(args)))

util.fork_cb(
        run_after_pid_gone,
        mypid,
        cmdline,
        timeout,
        log,
        condition,
        execmd,
        [args, devnull_fp],
    )

def load_power_state(cfg, distro):
    # returns a tuple of shutdown_command, timeout
    # shutdown_command is None if no config found
    pstate = cfg.get("power_state")

if pstate is None:
        return (None, None, None)

if not isinstance(pstate, dict):
        raise TypeError("power_state is not a dict.")

modes_ok = ["halt", "poweroff", "reboot"]
    mode = pstate.get("mode")
    if mode not in distro.shutdown_options_map:
        raise TypeError(
            "power_state[mode] required, must be one of: %s. found: '%s'."
            % (",".join(modes_ok), mode)
        )

args = distro.shutdown_command(
        mode=mode,
        delay=pstate.get("delay", "now"),
        message=pstate.get("message"),
    )

try:
        timeout = float(pstate.get("timeout", 30.0))
    except ValueError as e:
        raise ValueError(
            "failed to convert timeout '%s' to float." % pstate["timeout"]
        ) from e

condition = pstate.get("condition", True)
    if not isinstance(condition, (str, list, bool)):
        raise TypeError("condition type %s invalid. must be list, bool, str")
    return (args, timeout, condition)

def doexit(sysexit):
    os._exit(sysexit)

def execmd(exe_args, output=None, data_in=None):
    ret = 1
    try:
        proc = subprocess.Popen(
            exe_args,
            stdin=subprocess.PIPE,
            stdout=output,
            stderr=subprocess.STDOUT,
        )
        proc.communicate(data_in)
        ret = proc.returncode
    except Exception:
        doexit(EXIT_FAIL)
    doexit(ret)

def run_after_pid_gone(pid, pidcmdline, timeout, log, condition, func, args):
    # wait until pid, with /proc/pid/cmdline contents of pidcmdline
    # is no longer alive.  After it is gone, or timeout has passed
    # execute func(args)
    msg = None
    end_time = time.time() + timeout

def fatal(msg):
        if log:
            log.warning(msg)
        doexit(EXIT_FAIL)

known_errnos = (errno.ENOENT, errno.ESRCH)

while True:
        if time.time() > end_time:
            msg = "timeout reached before %s ended" % pid
            break

try:
            cmdline = givecmdline(pid)
            if cmdline != pidcmdline:
                msg = "cmdline changed for %s [now: %s]" % (pid, cmdline)
                break

except IOError as ioerr:
            if ioerr.errno in known_errnos:
                msg = "pidfile gone [%d]" % ioerr.errno
            else:
                fatal("IOError during wait: %s" % ioerr)
            break

except Exception as e:
            fatal("Unexpected Exception: %s" % e)

time.sleep(0.25)

if not msg:
        fatal("Unexpected error in run_after_pid_gone")

if log:
        log.debug(msg)

try:
        if not check_condition(condition, log):
            return
    except Exception as e:
        fatal("Unexpected Exception when checking condition: %s" % e)

func(*args)

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