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#
# Copyright:: Copyright 2016-2017, 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/provider/package"
require "chef/resource/dnf_package"
require "chef/mixin/which"
require "chef/mixin/shell_out"
require "chef/mixin/get_source_from_package"
require "chef/provider/package/dnf/python_helper"
require "chef/provider/package/dnf/version"
class Chef
class Provider
class Package
class Dnf < Chef::Provider::Package
extend Chef::Mixin::Which
extend Chef::Mixin::ShellOut
include Chef::Mixin::GetSourceFromPackage
allow_nils
use_multipackage_api
use_package_name_for_source
# all rhel variants >= 8 will use DNF
provides :package, platform_family: "rhel", platform_version: ">= 8"
# fedora >= 22 uses DNF
provides :package, platform: "fedora", platform_version: ">= 22"
# amazon will eventually use DNF
provides :package, platform: "amazon" do
which("dnf")
end
provides :dnf_package
#
# Most of the magic in this class happens in the python helper script. The ruby side of this
# provider knows only enough to translate Chef-style new_resource name+package+version into
# a request to the python side. The python side is then responsible for knowing everything
# about RPMs and what is installed and what is available. The ruby side of this class should
# remain a lightweight translation layer to translate Chef requests into RPC requests to
# python. This class knows nothing about how to compare RPM versions, and does not maintain
# any cached state of installed/available versions and should be kept that way.
#
def python_helper
@python_helper ||= PythonHelper.instance
end
def load_current_resource
flushcache if new_resource.flush_cache[:before]
@current_resource = Chef::Resource::DnfPackage.new(new_resource.name)
current_resource.package_name(new_resource.package_name)
current_resource.version(get_current_versions)
current_resource
end
def define_resource_requirements
requirements.assert(:install, :upgrade, :remove, :purge) do |a|
a.assertion { !new_resource.source || ::File.exist?(new_resource.source) }
a.failure_message Chef::Exceptions::Package, "Package #{new_resource.package_name} not found: #{new_resource.source}"
a.whyrun "assuming #{new_resource.source} would have previously been created"
end
super
end
def candidate_version
package_name_array.each_with_index.map do |pkg, i|
available_version(i).version_with_arch
end
end
def get_current_versions
package_name_array.each_with_index.map do |pkg, i|
installed_version(i).version_with_arch
end
end
def install_package(names, versions)
if new_resource.source
dnf(options, "-y install", new_resource.source)
else
resolved_names = names.each_with_index.map { |name, i| available_version(i).to_s unless name.nil? }
dnf(options, "-y install", resolved_names)
end
flushcache
end
# dnf upgrade does not work on uninstalled packaged, while install will upgrade
alias upgrade_package install_package
def remove_package(names, versions)
resolved_names = names.each_with_index.map { |name, i| installed_version(i).to_s unless name.nil? }
dnf(options, "-y remove", resolved_names)
flushcache
end
alias purge_package remove_package
action :flush_cache do
flushcache
end
private
def resolve_source_to_version_obj
shell_out_with_timeout!("rpm -qp --queryformat '%{NAME} %{EPOCH} %{VERSION} %{RELEASE} %{ARCH}\n' #{new_resource.source}").stdout.each_line do |line|
# this is another case of committing the sin of doing some lightweight mangling of RPM versions in ruby -- but the output of the rpm command
# does not match what the dnf library accepts.
case line
when /^(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)$/
return Version.new($1, "#{$2 == '(none)' ? '0' : $2}:#{$3}-#{$4}", $5)
end
end
end
def version_compare(v1, v2)
python_helper.compare_versions(v1, v2)
end
# @returns Array<Version>
def available_version(index)
@available_version ||= []
@available_version[index] ||= if new_resource.source
resolve_source_to_version_obj
else
python_helper.query(:whatavailable, package_name_array[index], safe_version_array[index], safe_arch_array[index])
end
@available_version[index]
end
# @returns Array<Version>
def installed_version(index)
@installed_version ||= []
@installed_version[index] ||= if new_resource.source
python_helper.query(:whatinstalled, available_version(index).name, safe_version_array[index], safe_arch_array[index])
else
python_helper.query(:whatinstalled, package_name_array[index], safe_version_array[index], safe_arch_array[index])
end
@installed_version[index]
end
# cache flushing is accomplished by simply restarting the python helper. this produces a roughly
# 15% hit to the runtime of installing/removing/upgrading packages. correctly using multipackage
# array installs (and the multipackage cookbook) can produce 600% improvements in runtime.
def flushcache
python_helper.restart
end
def dnf(*args)
shell_out_with_timeout!(a_to_s("dnf", *args))
end
def safe_version_array
if new_resource.version.is_a?(Array)
new_resource.version
elsif new_resource.version.nil?
package_name_array.map { nil }
else
[ new_resource.version ]
end
end
def safe_arch_array
if new_resource.arch.is_a?(Array)
new_resource.arch
elsif new_resource.arch.nil?
package_name_array.map { nil }
else
[ new_resource.arch ]
end
end
end
end
end
end
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