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#
# Author:: Lamont Granquist (<lamont@chef.io>)
# Copyright:: Copyright (c) 2014 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 'chef/chef_class'
class Chef
class Platform
class ServiceHelpers
class << self
# This helper is mostly used to sort out the mess of different
# linux mechanisms that can be used to start services. It does
# not necessarily need to linux-specific, but currently all our
# other service providers are narrowly platform-specific with no
# alternatives.
#
# NOTE: if a system has (for example) chkconfig installed then we
# should report that chkconfig is installed. The fact that a system
# may also have systemd installed does not mean that we do not
# report that systemd is also installed. This module is purely for
# discovery of all the alternatives, handling the priority of the
# different services is NOT a design concern of this module.
#
def service_resource_providers
providers = []
if ::File.exist?(Chef.path_to("/usr/sbin/update-rc.d"))
providers << :debian
end
if ::File.exist?(Chef.path_to("/usr/sbin/invoke-rc.d"))
providers << :invokercd
end
if ::File.exist?(Chef.path_to("/sbin/initctl"))
providers << :upstart
end
if ::File.exist?(Chef.path_to("/sbin/insserv"))
providers << :insserv
end
if systemd_is_init?
providers << :systemd
end
if ::File.exist?(Chef.path_to("/sbin/chkconfig"))
providers << :redhat
end
providers
end
def config_for_service(service_name)
configs = []
if ::File.exist?(Chef.path_to("/etc/init.d/#{service_name}"))
configs << :initd
end
if ::File.exist?(Chef.path_to("/etc/init/#{service_name}.conf"))
configs << :upstart
end
if ::File.exist?(Chef.path_to("/etc/xinetd.d/#{service_name}"))
configs << :xinetd
end
if ::File.exist?(Chef.path_to("/etc/rc.d/#{service_name}"))
configs << :etc_rcd
end
if ::File.exist?(Chef.path_to("/usr/local/etc/rc.d/#{service_name}"))
configs << :usr_local_etc_rcd
end
if has_systemd_service_unit?(service_name) || has_systemd_unit?(service_name)
configs << :systemd
end
configs
end
private
def systemd_is_init?
::File.exist?(Chef.path_to("/proc/1/comm")) &&
::File.open(Chef.path_to("/proc/1/comm")).gets.chomp == "systemd"
end
def has_systemd_service_unit?(svc_name)
%w( /etc /usr/lib /lib /run ).any? do |load_path|
::File.exist?(
Chef.path_to("#{load_path}/systemd/system/#{svc_name.gsub(/@.*$/, '@')}.service")
)
end
end
def has_systemd_unit?(svc_name)
# TODO: stop supporting non-service units with service resource
%w( /etc /usr/lib /lib /run ).any? do |load_path|
::File.exist?(Chef.path_to("#{load_path}/systemd/system/#{svc_name}"))
end
end
end
end
end
end
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