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#
# Author:: Bryan McLellan (btm@loftninjas.org)
# Copyright:: Copyright (c) 2009 Bryan McLellan
# 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/log'
require 'chef/mixin/command'
require 'chef/provider'
class Chef
class Provider
class Cron < Chef::Provider
include Chef::Mixin::Command
def initialize(node, new_resource)
super(node, new_resource)
@cron_exists = false
@cron_empty = false
end
attr_accessor :cron_exists, :cron_empty
def load_current_resource
crontab = String.new
@current_resource = Chef::Resource::Cron.new(@new_resource.name)
status = popen4("crontab -l -u #{@new_resource.user}") do |pid, stdin, stdout, stderr|
stdout.each { |line| crontab << line }
end
if status.exitstatus > 1
raise Chef::Exceptions::Cron, "Error determining state of #{@new_resource.name}, exit: #{status.exitstatus}"
elsif status.exitstatus == 0
crontab.each do |line|
case line
when /^# Chef Name: #{@new_resource.name}/
Chef::Log.debug("Found cron '#{@new_resource.name}'")
@cron_exists = true
end
end
Chef::Log.debug("Cron '#{@new_resource.name}' not found") unless @cron_exists
elsif status.exitstatus == 1
Chef::Log.debug("Cron empty for '#{@new_resource.user}'")
@cron_empty = true
end
@current_resource
end
def action_create
crontab = String.new
cron_found = false
if @cron_exists
status = popen4("crontab -l -u #{@new_resource.user}") do |pid, stdin, stdout, stderr|
stdout.each_line do |line|
if cron_found
cronline = "#{@new_resource.minute} #{@new_resource.hour} #{@new_resource.day} #{@new_resource.month} #{@new_resource.weekday} #{@new_resource.command}\n"
if (line == cronline)
Chef::Log.debug("Skipping existing cron entry '#{@new_resource.name}'")
return
end
crontab << cronline
cron_found = false
next
end
case line
when /^# Chef Name: #{new_resource.name}\n/
cron_found = true
end
crontab << line
end
end
status = popen4("crontab -u #{@new_resource.user} -", :waitlast => true) do |pid, stdin, stdout, stderr|
crontab.each { |line| stdin.puts "#{line}" }
stdin.close
end
Chef::Log.info("Updated cron '#{@new_resource.name}'")
else
unless @cron_empty
status = popen4("crontab -l -u #{@new_resource.user}") do |pid, stdin, stdout, stderr|
stdout.each { |line| crontab << line }
end
end
crontab << "# Chef Name: #{new_resource.name}\n"
crontab << "#{@new_resource.minute} #{@new_resource.hour} #{@new_resource.day} #{@new_resource.month} #{@new_resource.weekday} #{@new_resource.command}\n"
status = popen4("crontab -u #{@new_resource.user} -", :waitlast => true) do |pid, stdin, stdout, stderr|
crontab.each { |line| stdin.puts "#{line}" }
stdin.close
end
Chef::Log.info("Added cron '#{@new_resource.name}'")
end
end
def action_delete
if @cron_exists
crontab = String.new
cron_found = false
status = popen4("crontab -l -u #{@new_resource.user}") do |pid, stdin, stdout, stderr|
stdout.each_line do |line|
if cron_found
cron_found = false
next
end
case line
when /^# Chef Name: #{new_resource.name}\n/
cron_found = true
next
end
crontab << line
end
end
status = popen4("crontab -u #{@new_resource.user} -", :waitlast => true) do |pid, stdin, stdout, stderr|
crontab.each { |line| stdin.puts "#{line}" }
stdin.close
end
Chef::Log.debug("Deleted cron '#{@new_resource.name}'")
end
end
end
end
end
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