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#
# Author:: Joshua Timberman (<joshua@getchef.com>)
# Author:: Graeme Mathieson (<mathie@woss.name>)
#
# Copyright 2011-2013, Opscode, Inc.
# Copyright 2014, Chef Software, Inc <legal@getchef.com>
#
# 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 'etc'
require 'chef/mixin/homebrew_owner'
class Chef
class Provider
class Package
class Homebrew < Chef::Provider::Package
include Chef::Mixin::HomebrewOwner
def load_current_resource
self.current_resource = Chef::Resource::Package.new(new_resource.name)
current_resource.package_name(new_resource.package_name)
current_resource.version(current_installed_version)
Chef::Log.debug("#{new_resource} current version is #{current_resource.version}") if current_resource.version
@candidate_version = candidate_version
Chef::Log.debug("#{new_resource} candidate version is #{@candidate_version}") if @candidate_version
current_resource
end
def install_package(name, version)
unless current_resource.version == version
brew('install', new_resource.options, name)
end
end
def upgrade_package(name, version)
current_version = current_resource.version
if current_version.nil? or current_version.empty?
install_package(name, version)
elsif current_version != version
brew('upgrade', new_resource.options, name)
end
end
def remove_package(name, version)
if current_resource.version
brew('uninstall', new_resource.options, name)
end
end
# Homebrew doesn't really have a notion of purging, do a "force remove"
def purge_package(name, version)
new_resource.options((new_resource.options || '') << ' --force').strip
remove_package(name, version)
end
def brew(*args)
get_response_from_command("brew #{args.join(' ')}")
end
# We implement a querying method that returns the JSON-as-Hash
# data for a formula per the Homebrew documentation. Previous
# implementations of this provider in the homebrew cookbook
# performed a bit of magic with the load path to get this
# information, but that is not any more robust than using the
# command-line interface that returns the same thing.
#
# https://github.com/Homebrew/homebrew/wiki/Querying-Brew
def brew_info
@brew_info ||= Chef::JSONCompat.from_json(brew('info', '--json=v1', new_resource.package_name)).first
end
# Some packages (formula) are "keg only" and aren't linked,
# because multiple versions installed can cause conflicts. We
# handle this by using the last installed version as the
# "current" (as in latest). Otherwise, we will use the version
# that brew thinks is linked as the current version.
#
def current_installed_version
brew_info['keg_only'] ? brew_info['installed'].last['version'] : brew_info['linked_keg']
end
# Packages (formula) available to install should have a
# "stable" version, per the Homebrew project's acceptable
# formula documentation, so we will rely on that being the
# case. Older implementations of this provider in the homebrew
# cookbook would fall back to +brew_info['version']+, but the
# schema has changed, and homebrew is a constantly rolling
# forward project.
#
# https://github.com/Homebrew/homebrew/wiki/Acceptable-Formulae#stable-versions
def candidate_version
brew_info['versions']['stable']
end
private
def get_response_from_command(command)
home_dir = Etc.getpwnam(homebrew_owner(node)).dir
Chef::Log.debug "Executing '#{command}' as user '#{homebrew_owner(node)}'"
output = shell_out!(command, :timeout => 1800, :user => homebrew_owner(node), :environment => { 'HOME' => home_dir, 'RUBYOPT' => nil })
output.stdout.chomp
end
end
end
end
end
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