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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/mixin/command'
require 'chef/log'
require 'chef/file_cache'
require 'chef/platform'
class Chef
class Provider
class Package < Chef::Provider
include Chef::Mixin::Command
attr_accessor :candidate_version
def initialize(new_resource, run_context)
super
@candidate_version = nil
end
def whyrun_supported?
true
end
def load_current_resource
end
def define_resource_requirements
requirements.assert(:install) do |a|
a.assertion { ((@new_resource.version != nil) && !(target_version_already_installed?)) \
|| !(@current_resource.version.nil? && candidate_version.nil?) }
a.failure_message(Chef::Exceptions::Package, "No version specified, and no candidate version available for #{@new_resource.package_name}")
a.whyrun("Assuming a repository that offers #{@new_resource.package_name} would have been configured")
end
requirements.assert(:upgrade) do |a|
# Can't upgrade what we don't have
a.assertion { !(@current_resource.version.nil? && candidate_version.nil?) }
a.failure_message(Chef::Exceptions::Package, "No candidate version available for #{@new_resource.package_name}")
a.whyrun("Assuming a repository that offers #{@new_resource.package_name} would have been configured")
end
end
def action_install
# If we specified a version, and it's not the current version, move to the specified version
if !@new_resource.version.nil? && !(target_version_already_installed?)
install_version = @new_resource.version
# If it's not installed at all, install it
elsif @current_resource.version.nil?
install_version = candidate_version
else
Chef::Log.debug("#{@new_resource} is already installed - nothing to do")
return
end
# We need to make sure we handle the preseed file
if @new_resource.response_file
if preseed_file = get_preseed_file(@new_resource.package_name, install_version)
converge_by("preseed package #{@new_resource.package_name}") do
preseed_package(preseed_file)
end
end
end
description = install_version ? "version #{install_version} of" : ""
converge_by("install #{description} package #{@new_resource.package_name}") do
@new_resource.version(install_version)
install_package(@new_resource.package_name, install_version)
end
end
def action_upgrade
if candidate_version.nil?
Chef::Log.debug("#{@new_resource} no candidate version - nothing to do")
elsif @current_resource.version == candidate_version
Chef::Log.debug("#{@new_resource} is at the latest version - nothing to do")
else
@new_resource.version(candidate_version)
orig_version = @current_resource.version || "uninstalled"
converge_by("upgrade package #{@new_resource.package_name} from #{orig_version} to #{candidate_version}") do
status = upgrade_package(@new_resource.package_name, candidate_version)
Chef::Log.info("#{@new_resource} upgraded from #{orig_version} to #{candidate_version}")
end
end
end
def action_remove
if removing_package?
description = @new_resource.version ? "version #{@new_resource.version} of " : ""
converge_by("remove #{description} package #{@current_resource.package_name}") do
remove_package(@current_resource.package_name, @new_resource.version)
Chef::Log.info("#{@new_resource} removed")
end
else
Chef::Log.debug("#{@new_resource} package does not exist - nothing to do")
end
end
def removing_package?
if @current_resource.version.nil?
false # nothing to remove
elsif @new_resource.version.nil?
true # remove any version of a package
elsif @new_resource.version == @current_resource.version
true # remove the version we have
else
false # we don't have the version we want to remove
end
end
def action_purge
if removing_package?
description = @new_resource.version ? "version #{@new_resource.version} of" : ""
converge_by("purge #{description} package #{@current_resource.package_name}") do
purge_package(@current_resource.package_name, @new_resource.version)
Chef::Log.info("#{@new_resource} purged")
end
end
end
def action_reconfig
if @current_resource.version == nil then
Chef::Log.debug("#{@new_resource} is NOT installed - nothing to do")
return
end
unless @new_resource.response_file then
Chef::Log.debug("#{@new_resource} no response_file provided - nothing to do")
return
end
if preseed_file = get_preseed_file(@new_resource.package_name, @current_resource.version)
converge_by("reconfigure package #{@new_resource.package_name}") do
preseed_package(preseed_file)
status = reconfig_package(@new_resource.package_name, @current_resource.version)
Chef::Log.info("#{@new_resource} reconfigured")
end
else
Chef::Log.debug("#{@new_resource} preseeding has not changed - nothing to do")
end
end
def install_package(name, version)
raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :install"
end
def upgrade_package(name, version)
raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :upgrade"
end
def remove_package(name, version)
raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :remove"
end
def purge_package(name, version)
raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :purge"
end
def preseed_package(file)
raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support pre-seeding package install/upgrade instructions"
end
def reconfig_package(name, version)
raise( Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :reconfig" )
end
def get_preseed_file(name, version)
resource = preseed_resource(name, version)
resource.run_action(:create)
Chef::Log.debug("#{@new_resource} fetched preseed file to #{resource.path}")
if resource.updated_by_last_action?
resource.path
else
false
end
end
def preseed_resource(name, version)
# A directory in our cache to store this cookbook's preseed files in
file_cache_dir = Chef::FileCache.create_cache_path("preseed/#{@new_resource.cookbook_name}")
# The full path where the preseed file will be stored
cache_seed_to = "#{file_cache_dir}/#{name}-#{version}.seed"
Chef::Log.debug("#{@new_resource} fetching preseed file to #{cache_seed_to}")
begin
remote_file = Chef::Resource::Template.new(cache_seed_to, run_context)
remote_file.cookbook_name = @new_resource.cookbook_name
remote_file.source(@new_resource.response_file)
remote_file.backup(false)
provider = Chef::Platform.provider_for_resource(remote_file, :create)
provider.template_location
rescue
Chef::Log.debug("#{@new_resource} fetching preseed file via Template resource failed, fallback to CookbookFile resource")
remote_file = Chef::Resource::CookbookFile.new(cache_seed_to, run_context)
remote_file.cookbook_name = @new_resource.cookbook_name
remote_file.source(@new_resource.response_file)
remote_file.backup(false)
end
remote_file
end
def expand_options(options)
options ? " #{options}" : ""
end
def target_version_already_installed?
@new_resource.version == @current_resource.version
end
end
end
end
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