hapi-fhir/vagrant/chef/cookbooks/java/providers/alternatives.rb

80 lines
3.1 KiB
Ruby

#
# Cookbook Name:: java
# Provider:: alternatives
#
# 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/mixin/shell_out'
include Chef::Mixin::ShellOut
action :set do
if new_resource.bin_cmds
# I couldn't find a way to cleanly avoid repeating this variable declaration in both :set and :unset
alternatives_cmd = node['platform_family'] == 'rhel' ? 'alternatives' : 'update-alternatives'
new_resource.bin_cmds.each do |cmd|
bin_path = "/usr/bin/#{cmd}"
alt_path = "#{new_resource.java_location}/bin/#{cmd}"
priority = new_resource.priority
if !::File.exist?(alt_path)
Chef::Log.debug "Skipping setting alternative for #{cmd}. Command #{alt_path} does not exist."
next
end
# install the alternative if needed
alternative_exists = shell_out("#{alternatives_cmd} --display #{cmd} | grep #{alt_path}").exitstatus == 0
unless alternative_exists
description = "Add alternative for #{cmd}"
converge_by(description) do
Chef::Log.debug "Adding alternative for #{cmd}"
shell_out("rm /var/lib/alternatives/#{cmd}")
install_cmd = shell_out("#{alternatives_cmd} --install #{bin_path} #{cmd} #{alt_path} #{priority}")
unless install_cmd.exitstatus == 0
Chef::Application.fatal!(%Q[ set alternative failed ])
end
end
new_resource.updated_by_last_action(true)
end
# set the alternative if default
if new_resource.default
alternative_is_set = shell_out("#{alternatives_cmd} --display #{cmd} | grep \"link currently points to #{alt_path}\"").exitstatus == 0
unless alternative_is_set
description = "Set alternative for #{cmd}"
converge_by(description) do
Chef::Log.debug "Setting alternative for #{cmd}"
set_cmd = shell_out("#{alternatives_cmd} --set #{cmd} #{alt_path}")
unless set_cmd.exitstatus == 0
Chef::Application.fatal!(%Q[ set alternative failed ])
end
end
new_resource.updated_by_last_action(true)
end
end
end
end
end
action :unset do
# I couldn't find a way to cleanly avoid repeating this variable declaration in both :set and :unset
alternatives_cmd = node['platform_family'] == 'rhel' ? 'alternatives' : 'update-alternatives'
new_resource.bin_cmds.each do |cmd|
alt_path = "#{new_resource.java_location}/bin/#{cmd}"
cmd = shell_out("#{alternatives_cmd} --remove #{cmd} #{alt_path}")
if cmd.exitstatus == 0
new_resource.updated_by_last_action(true)
end
end
end