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#
# Author:: Joshua Timberman (<joshua@chef.io>)
# Author:: Graeme Mathieson (<mathie@woss.name>)
#
# Copyright 2011-2016, Chef Software Inc.
# Copyright 2014-2016, Chef Software, Inc <legal@chef.io>
#
# 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" unless defined?(Etc)
require_relative "../../mixin/homebrew_user"
class Chef
class Provider
class Package
class Homebrew < Chef::Provider::Package
provides :package, os: "darwin", override: true
provides :homebrew_package
include Chef::Mixin::HomebrewUser
def load_current_resource
self.current_resource = Chef::Resource::HomebrewPackage.new(new_resource.name)
current_resource.package_name(new_resource.package_name)
current_resource.version(current_installed_version)
logger.trace("#{new_resource} current version is #{current_resource.version}") if current_resource.version
@candidate_version = candidate_version
logger.trace("#{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", options, name)
end
end
def upgrade_package(name, version)
current_version = current_resource.version
if current_version.nil? || current_version.empty?
install_package(name, version)
elsif current_version != version
brew("upgrade", options, name)
end
end
def remove_package(name, version)
if current_resource.version
brew("uninstall", options, name)
end
end
# Homebrew doesn't really have a notion of purging, do a "force remove"
def purge_package(name, version)
if current_resource.version
brew("uninstall", "--force", options, name)
end
end
def brew(*args)
get_response_from_command("brew", *args)
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
if brew_info["keg_only"]
if brew_info["installed"].empty?
nil
else
brew_info["installed"].last["version"]
end
else
brew_info["linked_keg"]
end
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)
homebrew_uid = find_homebrew_uid(new_resource.respond_to?(:homebrew_user) && new_resource.homebrew_user)
homebrew_user = Etc.getpwuid(homebrew_uid)
logger.trace "Executing '#{command.join(" ")}' as user '#{homebrew_user.name}'"
# FIXME: this 1800 second default timeout should be deprecated
output = shell_out!(*command, timeout: 1800, user: homebrew_uid, environment: { "HOME" => homebrew_user.dir, "RUBYOPT" => nil, "TMPDIR" => nil })
output.stdout.chomp
end
end
end
end
end
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