#!/usr/bin/python3 import pathlib from typing import List, Union try: from ansible_collections.sebastian.systemd.plugins.module_utils.generic import SYSTEMD_SERVICE_CONFIG, Types from ansible_collections.sebastian.systemd.plugins.module_utils.module import SystemdUnitModule except ImportError: from plugins.module_utils.generic import SYSTEMD_SERVICE_CONFIG, Types from plugins.module_utils.module import SystemdUnitModule, installable @installable class Module(SystemdUnitModule): """Creates System Services units""" name = "system_service" module_spec = dict( argument_spec=dict( name=Types.str(required=True), user=Types.str(), group=Types.str(), type=Types.str( choices=("simple", "exec", "forking", "oneshot", "dbus", "notify", "notify-reload", "idle"), default="simple", help="Type of the systemd service.\n" "simple and exec start long running services that run in the same process over the whole time, exec is waiting until the process was started completly.\n" "forking does some things in the foreground, starts an background process and then exits to leave the work to the background process.\n" "oneshot processes are started by systemd, do their work and then exit, similar to cronjobs.\n" "dbus services will be considered started up once they aquire the specified dbus bus" "notify and notify-reload notify systemd about the start up via sd_notify. notify-reload needs also inform systemd on reloads and when it is ready again after an reload.\n" "idle is similar to simple, but it can delay the start up by a few seconds.", ), pre=Types.list(str, help="command or list of commands that are started before the main command(Types.str)"), start=Types.list( str, True, help="command or list of commands that are started as main programm. Multiple commands are only allowed in a oneshot command", ), post=Types.list(str, help="Command or list of commands that are started after the main command(s) stopped without problems."), ), ) def prepare(self): self.unitfile = (SYSTEMD_SERVICE_CONFIG / self.get("name")).with_stem(".service") if self.get("type", "simple") != "oneshot" and len(self.get("start")) > 1: self.module.fail_json("only oneshot services are allowed to have multiple start commands", **self.result) def service(self): section = "[Service]\n" if self.get("type"): section += "Type=".format(self.get("type")) if self.get("pre", False): for cmd in self.get("pre"): section += "ExecStartPre={}".format(cmd) if self.get("start", False): for cmd in self.get("start"): section += "ExecStart={}".format(cmd) if self.get("post", False): for cmd in self.get("post"): section += "ExecStartPost={}".format(cmd) if self.get("user", False): section += "User={}".format(self.get("user")) if self.get("group", False): section += "Group={}".format(self.get("group")) return section def unit(self) -> str: if self.__unit is None: self.__unit = "\n".join( ( self.header(), self.service(), self.install(), ) ) return self.__unit DOCUMENTATION = """--- description: - Creates System Services units module: system_service options: after: default: [] description: - list of units that this unit wants to be started after this unit elements: str required: false type: list before: default: [] description: - list of units that this unit needs to be started before this unit. elements: str required: false type: list description: description: - An description for programs that access systemd required: false type: str documentation: default: [] description: - Paths where documentation can be found elements: str required: false type: list group: required: false type: str name: required: true type: str partof: default: [] description: - list of units that this unit is part of. - If the restart this unit does it too, but if this restarts it does not affect the other units. elements: str required: false type: list post: default: [] description: - Command or list of commands that are started after the main command(s) stopped without problems. elements: str required: false type: list pre: default: [] description: - command or list of commands that are started before the main command(Types.str) elements: str required: false type: list required_by: default: [] description: - systemd units that require this mount elements: str required: false type: list requires: default: [] description: - list of units that this unit requires. If it fails or can't be started this unit fails. without before/after this is started at the same time elements: str required: false type: list start: description: - command or list of commands that are started as main programm. Multiple commands are only allowed in a oneshot command elements: str required: true type: list type: choices: - simple - exec - forking - oneshot - dbus - notify - notify-reload - idle default: simple description: - Type of the systemd service. - simple and exec start long running services that run in the same process over the whole time, exec is waiting until the process was started completly. - forking does some things in the foreground, starts an background process and then exits to leave the work to the background process. - oneshot processes are started by systemd, do their work and then exit, similar to cronjobs. - dbus services will be considered started up once they aquire the specified dbus busnotify and notify-reload notify systemd about the start up via sd_notify. notify-reload needs also inform systemd on reloads and when it is ready again after an reload. - idle is similar to simple, but it can delay the start up by a few seconds. required: false type: str user: required: false type: str wanted_by: default: [] description: - systemd units that want the mount, but not explicitly require it. Commonly used for target if not service explicitly require it. elements: str required: false type: list wants: default: [] description: - list of units that this unit wants. If it fails or can't be started it does not affect this unit elements: str required: false type: list short_description: Creates System Services units """ if __name__ == "__main__": Module()()