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#
# Author:: AJ Christensen (<aj@hjksolutions.com>)
# Copyright:: Copyright (c) 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 "init"
class Chef
class Provider
class Service
class Debian < Chef::Provider::Service::Init
provides :service, platform_family: "debian" do
debianrcd?
end
UPDATE_RC_D_ENABLED_MATCHES = %r{/rc[\dS].d/S|not installed}i.freeze
UPDATE_RC_D_PRIORITIES = %r{/rc([\dS]).d/([SK])(\d\d)}i.freeze
def self.supports?(resource, action)
service_script_exist?(:initd, resource.service_name)
end
def load_current_resource
super
current_resource.priority(get_priority)
current_resource.enabled(service_currently_enabled?(current_resource.priority))
current_resource
end
def define_resource_requirements
# do not call super here, inherit only shared_requirements
shared_resource_requirements
requirements.assert(:all_actions) do |a|
update_rcd = "/usr/sbin/update-rc.d"
a.assertion { ::File.exists? update_rcd }
a.failure_message Chef::Exceptions::Service, "#{update_rcd} does not exist!"
# no whyrun recovery - this is a base system component of debian
# distros and must be present
end
requirements.assert(:all_actions) do |a|
a.assertion { @got_priority == true }
a.failure_message Chef::Exceptions::Service, "Unable to determine priority for service"
# This can happen if the service is not yet installed,so we'll fake it.
a.whyrun ["Unable to determine priority of service, assuming service would have been correctly installed earlier in the run.",
"Assigning temporary priorities to continue.",
"If this service is not properly installed prior to this point, this will fail."] do
temp_priorities = { "6" => [:stop, "20"],
"0" => [:stop, "20"],
"1" => [:stop, "20"],
"2" => [:start, "20"],
"3" => [:start, "20"],
"4" => [:start, "20"],
"5" => [:start, "20"] }
current_resource.priority(temp_priorities)
end
end
end
# returns a list of levels that the service should be stopped or started on
def parse_init_file(path)
return [] unless ::File.exist?(path)
in_info = false
::File.readlines(path).each_with_object([]) do |line, acc|
if /^### BEGIN INIT INFO/.match?(line)
in_info = true
elsif /^### END INIT INFO/.match?(line)
break acc
elsif in_info
if line =~ /Default-(Start|Stop):\s+(\d.*)/
acc << $2.split(" ")
end
end
end.flatten
end
def get_priority
priority = {}
rc_files = []
levels = parse_init_file(@init_command)
levels.each do |level|
rc_files.push Dir.glob("/etc/rc#{level}.d/[SK][0-9][0-9]#{current_resource.service_name}")
end
rc_files.flatten.each do |line|
if UPDATE_RC_D_PRIORITIES =~ line
# priority[runlevel] = [ S|K, priority ]
# S = Start, K = Kill
# debian runlevels: 0 Halt, 1 Singleuser, 2 Multiuser, 3-5 == 2, 6 Reboot
priority[$1] = [($2 == "S" ? :start : :stop), $3]
end
end
# Reduce existing priority back to an integer if appropriate, picking
# runlevel 2 as a baseline
if priority[2] && [2..5].all? { |runlevel| priority[runlevel] == priority[2] }
priority = priority[2].last
end
@got_priority = true
priority
end
def service_currently_enabled?(priority)
enabled = false
priority.each do |runlevel, arguments|
logger.trace("#{new_resource} runlevel #{runlevel}, action #{arguments[0]}, priority #{arguments[1]}")
# if we are in a update-rc.d default startup runlevel && we start in this runlevel
if %w{ 1 2 3 4 5 S }.include?(runlevel) && arguments[0] == :start
enabled = true
end
end
enabled
end
# Override method from parent to ensure priority is up-to-date
action :enable do
if new_resource.priority.nil?
priority_ok = true
else
priority_ok = @current_resource.priority == new_resource.priority
end
if current_resource.enabled && priority_ok
logger.trace("#{new_resource} already enabled - nothing to do")
else
converge_by("enable service #{new_resource}") do
enable_service
logger.info("#{new_resource} enabled")
end
end
load_new_resource_state
new_resource.enabled(true)
end
def enable_service
# We call the same command regardless if we're enabling or disabling
# Users passing a Hash are responsible for setting their own stop priorities
if new_resource.priority.is_a? Hash
set_priority
return
end
start_priority = new_resource.priority.is_a?(Integer) ? new_resource.priority : 20
# Stop processes in reverse order of start using '100 - start_priority'.
stop_priority = 100 - start_priority
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults #{start_priority} #{stop_priority}")
end
def disable_service
if new_resource.priority.is_a? Hash
# We call the same command regardless if we're enabling or disabling
# Users passing a Hash are responsible for setting their own stop priorities
set_priority
return
end
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} disable")
end
def set_priority
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
# Reset priorities to default values before applying customizations. This way
# the final state will always be consistent, regardless if all runlevels were
# provided.
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults")
new_resource.priority.each do |level, (action, _priority)|
disable_or_enable = (action == :start ? "enable" : "disable")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} #{disable_or_enable} #{level}")
end
end
end
end
end
end
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