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# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
# This file is part of cloud-init. See LICENSE file for license information.

"""Migrator: Migrate old versions of cloud-init data to new"""

import os
import shutil
from logging import Logger

from cloudinit import helpers, util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.settings import PER_ALWAYS

MODULE_DESCRIPTION = """\
This module handles moving old versions of cloud-init data to newer ones.
Currently, it only handles renaming cloud-init's per-frequency semaphore files
to canonicalized name and renaming legacy semaphore names to newer ones. This
module is enabled by default, but can be disabled by specifying ``migrate:
false`` in config.
"""

distros = ["all"]
frequency = PER_ALWAYS

meta: MetaSchema = {
    "id": "cc_migrator",
    "name": "Migrator",
    "title": "Migrate old versions of cloud-init data to new",
    "description": MODULE_DESCRIPTION,
    "distros": distros,
    "examples": ["# Do not migrate cloud-init semaphores\nmigrate: false\n"],
    "frequency": frequency,
    "activate_by_schema_keys": [],
}

__doc__ = get_meta_doc(meta)


def _migrate_canon_sems(cloud):
    paths = (cloud.paths.get_ipath("sem"), cloud.paths.get_cpath("sem"))
    am_adjusted = 0
    for sem_path in paths:
        if not sem_path or not os.path.exists(sem_path):
            continue
        for p in os.listdir(sem_path):
            full_path = os.path.join(sem_path, p)
            if os.path.isfile(full_path):
                (name, ext) = os.path.splitext(p)
                canon_name = helpers.canon_sem_name(name)
                if canon_name != name:
                    new_path = os.path.join(sem_path, canon_name + ext)
                    shutil.move(full_path, new_path)
                    am_adjusted += 1
    return am_adjusted


def _migrate_legacy_sems(cloud, log):
    legacy_adjust = {
        "apt-update-upgrade": [
            "apt-configure",
            "package-update-upgrade-install",
        ],
    }
    paths = (cloud.paths.get_ipath("sem"), cloud.paths.get_cpath("sem"))
    for sem_path in paths:
        if not sem_path or not os.path.exists(sem_path):
            continue
        sem_helper = helpers.FileSemaphores(sem_path)
        for (mod_name, migrate_to) in legacy_adjust.items():
            possibles = [mod_name, helpers.canon_sem_name(mod_name)]
            old_exists = []
            for p in os.listdir(sem_path):
                (name, _ext) = os.path.splitext(p)
                if name in possibles and os.path.isfile(p):
                    old_exists.append(p)
            for p in old_exists:
                util.del_file(os.path.join(sem_path, p))
                (_name, freq) = os.path.splitext(p)
                for m in migrate_to:
                    log.debug(
                        "Migrating %s => %s with the same frequency", p, m
                    )
                    with sem_helper.lock(m, freq):
                        pass


def handle(
    name: str, cfg: Config, cloud: Cloud, log: Logger, args: list
) -> None:
    do_migrate = util.get_cfg_option_str(cfg, "migrate", True)
    if not util.translate_bool(do_migrate):
        log.debug("Skipping module named %s, migration disabled", name)
        return
    sems_moved = _migrate_canon_sems(cloud)
    log.debug(
        "Migrated %s semaphore files to there canonicalized names", sems_moved
    )
    _migrate_legacy_sems(cloud, log)


# vi: ts=4 expandtab

Filemanager

Name Type Size Permission Actions
__pycache__ Folder 0755
schemas Folder 0755
__init__.py File 14 B 0644
cc_ansible.py File 8.37 KB 0644
cc_apk_configure.py File 5.75 KB 0644
cc_apt_configure.py File 32.46 KB 0644
cc_apt_pipelining.py File 2.82 KB 0644
cc_bootcmd.py File 2.87 KB 0644
cc_byobu.py File 3.67 KB 0644
cc_ca_certs.py File 8.06 KB 0644
cc_chef.py File 13.79 KB 0644
cc_disable_ec2_metadata.py File 2.04 KB 0644
cc_disk_setup.py File 32.34 KB 0644
cc_fan.py File 3.11 KB 0644
cc_final_message.py File 3.41 KB 0644
cc_growpart.py File 19.42 KB 0644
cc_grub_dpkg.py File 5.49 KB 0644
cc_install_hotplug.py File 3.81 KB 0644
cc_keyboard.py File 2.08 KB 0644
cc_keys_to_console.py File 3.63 KB 0644
cc_landscape.py File 4.86 KB 0644
cc_locale.py File 1.88 KB 0644
cc_lxd.py File 17.96 KB 0644
cc_mcollective.py File 6.2 KB 0644
cc_migrator.py File 3.51 KB 0644
cc_mounts.py File 19.03 KB 0644
cc_ntp.py File 19.7 KB 0644
cc_package_update_upgrade_install.py File 4.42 KB 0644
cc_phone_home.py File 5.5 KB 0644
cc_power_state_change.py File 7.65 KB 0644
cc_puppet.py File 13.74 KB 0644
cc_refresh_rmc_and_interface.py File 5.48 KB 0644
cc_reset_rmc.py File 4.53 KB 0644
cc_resizefs.py File 10.56 KB 0644
cc_resolv_conf.py File 5.01 KB 0644
cc_rh_subscription.py File 17.05 KB 0644
cc_rightscale_userdata.py File 4.3 KB 0644
cc_rsyslog.py File 9.77 KB 0644
cc_runcmd.py File 2.92 KB 0644
cc_salt_minion.py File 5.54 KB 0644
cc_scripts_per_boot.py File 1.68 KB 0644
cc_scripts_per_instance.py File 1.83 KB 0644
cc_scripts_per_once.py File 1.78 KB 0644
cc_scripts_user.py File 1.87 KB 0644
cc_scripts_vendor.py File 2.31 KB 0644
cc_seed_random.py File 4.81 KB 0644
cc_set_hostname.py File 4.89 KB 0644
cc_set_passwords.py File 11.05 KB 0644
cc_snap.py File 6.39 KB 0644
cc_spacewalk.py File 3.52 KB 0644
cc_ssh.py File 14.03 KB 0644
cc_ssh_authkey_fingerprints.py File 4.24 KB 0644
cc_ssh_import_id.py File 5.82 KB 0644
cc_timezone.py File 1.44 KB 0644
cc_ubuntu_advantage.py File 16.88 KB 0644
cc_ubuntu_autoinstall.py File 4.56 KB 0644
cc_ubuntu_drivers.py File 4.63 KB 0644
cc_update_etc_hosts.py File 5.11 KB 0644
cc_update_hostname.py File 3.63 KB 0644
cc_users_groups.py File 7.6 KB 0644
cc_wireguard.py File 9.28 KB 0644
cc_write_files.py File 6.75 KB 0644
cc_write_files_deferred.py File 1.68 KB 0644
cc_yum_add_repo.py File 7.47 KB 0644
cc_zypper_add_repo.py File 6.68 KB 0644
modules.py File 11.43 KB 0644
schema.py File 43.14 KB 0644