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# Copyright (c) 2020 Dermot Bradley # # Author: Dermot Bradley <dermot_bradley@yahoo.com> # # This file is part of cloud-init. See LICENSE file for license information. """Apk Configure: Configures apk repositories file.""" import logging from cloudinit import temp_utils, templater, 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__) # If no mirror is specified then use this one DEFAULT_MIRROR = "https://alpine.global.ssl.fastly.net/alpine" REPOSITORIES_TEMPLATE = """\ ## template:jinja # # Created by cloud-init # # This file is written on first boot of an instance # {{ alpine_baseurl }}/{{ alpine_version }}/main {% if community_enabled -%} {{ alpine_baseurl }}/{{ alpine_version }}/community {% endif -%} {% if testing_enabled -%} {% if alpine_version != 'edge' %} # # Testing - using with non-Edge installation may cause problems! # {% endif %} {{ alpine_baseurl }}/edge/testing {% endif %} {% if local_repo != '' %} # # Local repo # {{ local_repo }}/{{ alpine_version }} {% endif %} """ meta: MetaSchema = { "id": "cc_apk_configure", "distros": ["alpine"], "frequency": PER_INSTANCE, "activate_by_schema_keys": ["apk_repos"], } def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None: """ Call to handle apk_repos sections in cloud-config file. @param name: The module name "apk_configure" from cloud.cfg @param cfg: A nested dict containing the entire cloud config contents. @param cloud: The CloudInit object in use. @param log: Pre-initialized Python logger object to use for logging. @param _args: Any module arguments from cloud.cfg """ # If there is no "apk_repos" section in the configuration # then do nothing. apk_section = cfg.get("apk_repos") if not apk_section: LOG.debug( "Skipping module named %s, no 'apk_repos' section found", name ) return # If "preserve_repositories" is explicitly set to True in # the configuration do nothing. if util.get_cfg_option_bool(apk_section, "preserve_repositories", False): LOG.debug( "Skipping module named %s, 'preserve_repositories' is set", name ) return # If there is no "alpine_repo" subsection of "apk_repos" present in the # configuration then do nothing, as at least "version" is required to # create valid repositories entries. alpine_repo = apk_section.get("alpine_repo") if not alpine_repo: LOG.debug( "Skipping module named %s, no 'alpine_repo' configuration found", name, ) return # If there is no "version" value present in configuration then do nothing. alpine_version = alpine_repo.get("version") if not alpine_version: LOG.debug( "Skipping module named %s, 'version' not specified in alpine_repo", name, ) return local_repo = apk_section.get("local_repo_base_url", "") _write_repositories_file(alpine_repo, alpine_version, local_repo) def _write_repositories_file(alpine_repo, alpine_version, local_repo): """ Write the /etc/apk/repositories file with the specified entries. @param alpine_repo: A nested dict of the alpine_repo configuration. @param alpine_version: A string of the Alpine version to use. @param local_repo: A string containing the base URL of a local repo. """ repo_file = "/etc/apk/repositories" alpine_baseurl = alpine_repo.get("base_url", DEFAULT_MIRROR) params = { "alpine_baseurl": alpine_baseurl, "alpine_version": alpine_version, "community_enabled": alpine_repo.get("community_enabled"), "testing_enabled": alpine_repo.get("testing_enabled"), "local_repo": local_repo, } tfile = temp_utils.mkstemp(prefix="template_name-", suffix=".tmpl") template_fn = tfile[1] # Filepath is second item in tuple util.write_file(template_fn, content=REPOSITORIES_TEMPLATE) LOG.debug("Generating Alpine repository configuration file: %s", repo_file) templater.render_to_file(template_fn, repo_file, params) # Clean up temporary template util.del_file(template_fn)