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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, 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/provider/package'
require 'chef/mixin/command'
require 'chef/resource/package'
require 'chef/mixin/shell_out'
class Chef
class Provider
class Package
class Apt < Chef::Provider::Package
include Chef::Mixin::ShellOut
attr_accessor :is_virtual_package
def load_current_resource
@current_resource = Chef::Resource::Package.new(@new_resource.name)
@current_resource.package_name(@new_resource.package_name)
check_package_state(@new_resource.package_name)
@current_resource
end
def define_resource_requirements
super
requirements.assert(:all_actions) do |a|
a.assertion { !@new_resource.source }
a.failure_message(Chef::Exceptions::Package, 'apt package provider cannot handle source attribute. Use dpkg provider instead')
end
end
def default_release_options
# Use apt::Default-Release option only if provider was explicitly defined
"-o APT::Default-Release=#{@new_resource.default_release}" if @new_resource.provider && @new_resource.default_release
end
def check_package_state(package)
Chef::Log.debug("#{@new_resource} checking package status for #{package}")
installed = false
shell_out!("apt-cache#{expand_options(default_release_options)} policy #{package}").stdout.each_line do |line|
case line
when /^\s{2}Installed: (.+)$/
installed_version = $1
if installed_version == '(none)'
Chef::Log.debug("#{@new_resource} current version is nil")
@current_resource.version(nil)
else
Chef::Log.debug("#{@new_resource} current version is #{installed_version}")
@current_resource.version(installed_version)
installed = true
end
when /^\s{2}Candidate: (.+)$/
candidate_version = $1
if candidate_version == '(none)'
# This may not be an appropriate assumption, but it shouldn't break anything that already worked -- btm
@is_virtual_package = true
showpkg = shell_out!("apt-cache showpkg #{package}").stdout
providers = Hash.new
# Returns all lines after 'Reverse Provides:'
showpkg.rpartition(/Reverse Provides:\s*#{$/}/)[2].each_line do |line|
provider, version = line.split
providers[provider] = version
end
# Check if the package providing this virtual package is installed
num_providers = providers.length
raise Chef::Exceptions::Package, "#{@new_resource.package_name} has no candidate in the apt-cache" if num_providers == 0
# apt will only install a virtual package if there is a single providing package
raise Chef::Exceptions::Package, "#{@new_resource.package_name} is a virtual package provided by #{num_providers} packages, you must explicitly select one to install" if num_providers > 1
# Check if the package providing this virtual package is installed
Chef::Log.info("#{@new_resource} is a virtual package, actually acting on package[#{providers.keys.first}]")
installed = check_package_state(providers.keys.first)
else
Chef::Log.debug("#{@new_resource} candidate version is #{$1}")
@candidate_version = $1
end
end
end
return installed
end
def install_package(name, version)
package_name = "#{name}=#{version}"
package_name = name if @is_virtual_package
run_noninteractive("apt-get -q -y#{expand_options(default_release_options)}#{expand_options(@new_resource.options)} install #{package_name}")
end
def upgrade_package(name, version)
install_package(name, version)
end
def remove_package(name, version)
package_name = "#{name}"
run_noninteractive("apt-get -q -y#{expand_options(@new_resource.options)} remove #{package_name}")
end
def purge_package(name, version)
run_noninteractive("apt-get -q -y#{expand_options(@new_resource.options)} purge #{@new_resource.package_name}")
end
def preseed_package(preseed_file)
Chef::Log.info("#{@new_resource} pre-seeding package installation instructions")
run_noninteractive("debconf-set-selections #{preseed_file}")
end
def reconfig_package(name, version)
Chef::Log.info("#{@new_resource} reconfiguring")
run_noninteractive("dpkg-reconfigure #{name}")
end
private
# Runs command via shell_out with magic environment to disable
# interactive prompts. Command is run with default localization rather
# than forcing locale to "C", so command output may not be stable.
def run_noninteractive(command)
shell_out!(command, :env => { "DEBIAN_FRONTEND" => "noninteractive", "LC_ALL" => nil })
end
end
end
end
end
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