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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# Copyright (C) 2018 Canonical Ltd. # # This file is part of cloud-init. See LICENSE file for license information. """Snap: Install, configure and manage snapd and snap packages.""" import os import sys from logging import Logger from textwrap import dedent from cloudinit import log as logging 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.settings import PER_INSTANCE from cloudinit.subp import prepend_base_command distros = ["ubuntu"] frequency = PER_INSTANCE LOG = logging.getLogger(__name__) meta: MetaSchema = { "id": "cc_snap", "name": "Snap", "title": "Install, configure and manage snapd and snap packages", "description": dedent( """\ This module provides a simple configuration namespace in cloud-init to both setup snapd and install snaps. .. note:: Both ``assertions`` and ``commands`` values can be either a dictionary or a list. If these configs are provided as a dictionary, the keys are only used to order the execution of the assertions or commands and the dictionary is merged with any vendor-data snap configuration provided. If a list is provided by the user instead of a dict, any vendor-data snap configuration is ignored. The ``assertions`` configuration option is a dictionary or list of properly-signed snap assertions which will run before any snap ``commands``. They will be added to snapd's assertion database by invoking ``snap ack ``. Snap ``commands`` is a dictionary or list of individual snap commands to run on the target system. These commands can be used to create snap users, install snaps and provide snap configuration. .. note:: If 'side-loading' private/unpublished snaps on an instance, it is best to create a snap seed directory and seed.yaml manifest in **/var/lib/snapd/seed/** which snapd automatically installs on startup. """ ), "distros": distros, "examples": [ dedent( """\ snap: assertions: 00: | signed_assertion_blob_here 02: | signed_assertion_blob_here commands: 00: snap create-user --sudoer --known @mydomain.com 01: snap install canonical-livepatch 02: canonical-livepatch enable """ ), dedent( """\ # Convenience: the snap command can be omitted when specifying commands # as a list and 'snap' will automatically be prepended. # The following commands are equivalent: snap: commands: 00: ['install', 'vlc'] 01: ['snap', 'install', 'vlc'] 02: snap install vlc 03: 'snap install vlc' """ ), dedent( """\ # You can use a list of commands snap: commands: - ['install', 'vlc'] - ['snap', 'install', 'vlc'] - snap install vlc - 'snap install vlc' """ ), dedent( """\ # You can use a list of assertions snap: assertions: - signed_assertion_blob_here - | signed_assertion_blob_here """ ), ], "frequency": PER_INSTANCE, "activate_by_schema_keys": ["snap"], } __doc__ = get_meta_doc(meta) SNAP_CMD = "snap" def add_assertions(assertions, assertions_file): """Import list of assertions. Import assertions by concatenating each assertion into a string separated by a '\n'. Write this string to a instance file and then invoke `snap ack /path/to/file` and check for errors. If snap exits 0, then all assertions are imported. """ if not assertions: return LOG.debug("Importing user-provided snap assertions") if isinstance(assertions, dict): assertions = assertions.values() elif not isinstance(assertions, list): raise TypeError( "assertion parameter was not a list or dict: {assertions}".format( assertions=assertions ) ) snap_cmd = [SNAP_CMD, "ack", assertions_file] combined = "\n".join(assertions) for asrt in assertions: LOG.debug("Snap acking: %s", asrt.split("\n")[0:2]) util.write_file(assertions_file, combined.encode("utf-8")) subp.subp(snap_cmd, capture=True) def run_commands(commands): """Run the provided commands provided in snap:commands configuration. Commands are run individually. Any errors are collected and reported after attempting all commands. @param commands: A list or dict containing commands to run. Keys of a dict will be used to order the commands provided as dict values. """ if not commands: return LOG.debug("Running user-provided snap commands") if isinstance(commands, dict): # Sort commands based on dictionary key commands = [v for _, v in sorted(commands.items())] elif not isinstance(commands, list): raise TypeError( "commands parameter was not a list or dict: {commands}".format( commands=commands ) ) fixed_snap_commands = prepend_base_command("snap", commands) cmd_failures = [] for command in fixed_snap_commands: shell = isinstance(command, str) try: subp.subp(command, shell=shell, status_cb=sys.stderr.write) except subp.ProcessExecutionError as e: cmd_failures.append(str(e)) if cmd_failures: msg = "Failures running snap commands:\n{cmd_failures}".format( cmd_failures=cmd_failures ) util.logexc(LOG, msg) raise RuntimeError(msg) def handle( name: str, cfg: Config, cloud: Cloud, log: Logger, args: list ) -> None: cfgin = cfg.get("snap", {}) if not cfgin: LOG.debug( "Skipping module named %s, no 'snap' key in configuration", name ) return add_assertions( cfgin.get("assertions", []), os.path.join(cloud.paths.get_ipath_cur(), "snapd.assertions"), ) run_commands(cfgin.get("commands", [])) # vi: ts=4 expandtab