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#
# Author:: Stephen Haynes (<sh@nomitor.com>)
# Author:: Davide Cavalca (<dcavalca@fb.com>)
# Copyright:: Copyright 2011-2019, Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require_relative "../../resource/service"
require_relative "simple"
require_relative "../../mixin/which"
require "shellwords" unless defined?(Shellwords)
class Chef::Provider::Service::Systemd < Chef::Provider::Service::Simple
include Chef::Mixin::Which
provides :service, os: "linux", target_mode: true do |node|
systemd?
end
attr_accessor :status_check_success
def self.supports?(resource, action)
service_script_exist?(:systemd, resource.service_name)
end
def load_current_resource
@current_resource = Chef::Resource::Service.new(new_resource.name)
current_resource.service_name(new_resource.service_name)
@status_check_success = true
if new_resource.status_command
logger.trace("#{new_resource} you have specified a status command, running..")
unless shell_out(new_resource.status_command).error?
current_resource.running(true)
else
@status_check_success = false
current_resource.running(false)
current_resource.enabled(false)
current_resource.masked(false)
current_resource.indirect(false)
end
else
current_resource.running(is_active?)
end
current_resource.enabled(is_enabled?)
current_resource.masked(is_masked?)
current_resource.indirect(is_indirect?)
current_resource
end
# systemd supports user services just fine
def user_services_requirements; end
def define_resource_requirements
shared_resource_requirements
requirements.assert(:all_actions) do |a|
a.assertion { status_check_success }
# We won't stop in any case, but in whyrun warn and tell what we're doing.
a.whyrun ["Failed to determine status of #{new_resource}, using command #{new_resource.status_command}.",
"Assuming service would have been installed and is disabled"]
end
end
def get_systemctl_options_args
if new_resource.user
raise NotImplementedError, "#{new_resource} does not support the user property on a target_mode host (yet)" if Chef::Config.target_mode?
uid = Etc.getpwnam(new_resource.user).uid
options = {
environment: {
"DBUS_SESSION_BUS_ADDRESS" => "unix:path=/run/user/#{uid}/bus",
},
user: new_resource.user,
}
args = "--user"
else
options = {}
args = "--system"
end
[options, args]
end
def start_service
if current_resource.running
logger.trace("#{new_resource} already running, not starting")
else
if new_resource.start_command
super
else
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} start #{Shellwords.escape(new_resource.service_name)}", default_env: false, **options)
end
end
end
def stop_service
unless current_resource.running
logger.trace("#{new_resource} not running, not stopping")
else
if new_resource.stop_command
super
else
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} stop #{Shellwords.escape(new_resource.service_name)}", default_env: false, **options)
end
end
end
def restart_service
if new_resource.restart_command
super
else
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} restart #{Shellwords.escape(new_resource.service_name)}", default_env: false, **options)
end
end
def reload_service
if new_resource.reload_command
super
else
if current_resource.running
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} reload #{Shellwords.escape(new_resource.service_name)}", default_env: false, **options)
else
start_service
end
end
end
def enable_service
if current_resource.masked || current_resource.indirect
logger.trace("#{new_resource} cannot be enabled: it is masked or indirect")
return
end
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} enable #{Shellwords.escape(new_resource.service_name)}", **options)
end
def disable_service
if current_resource.masked || current_resource.indirect
logger.trace("#{new_resource} cannot be disabled: it is masked or indirect")
return
end
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} disable #{Shellwords.escape(new_resource.service_name)}", **options)
end
def mask_service
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} mask #{Shellwords.escape(new_resource.service_name)}", **options)
end
def unmask_service
options, args = get_systemctl_options_args
shell_out!("#{systemctl_path} #{args} unmask #{Shellwords.escape(new_resource.service_name)}", **options)
end
def is_active?
options, args = get_systemctl_options_args
shell_out("#{systemctl_path} #{args} is-active #{Shellwords.escape(new_resource.service_name)} --quiet", **options).exitstatus == 0
end
def is_enabled?
options, args = get_systemctl_options_args
shell_out("#{systemctl_path} #{args} is-enabled #{Shellwords.escape(new_resource.service_name)} --quiet", **options).exitstatus == 0
end
def is_indirect?
options, args = get_systemctl_options_args
s = shell_out("#{systemctl_path} #{args} is-enabled #{Shellwords.escape(new_resource.service_name)}", **options)
s.stdout.include?("indirect")
end
def is_masked?
options, args = get_systemctl_options_args
s = shell_out("#{systemctl_path} #{args} is-enabled #{Shellwords.escape(new_resource.service_name)}", **options)
s.exitstatus != 0 && s.stdout.include?("masked")
end
private
def systemctl_path
if @systemctl_path.nil?
@systemctl_path = which("systemctl")
end
@systemctl_path
end
end
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