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bundler.rb
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bundler.rb
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require "monitor"
require "pathname"
require "set"
require "tempfile"
require "bundler"
require_relative "shared_helpers"
require_relative "version"
module Vagrant
# This class manages Vagrant's interaction with Bundler. Vagrant uses
# Bundler as a way to properly resolve all dependencies of Vagrant and
# all Vagrant-installed plugins.
class Bundler
def self.instance
@bundler ||= self.new
end
def initialize
@monitor = Monitor.new
@gem_home = ENV["GEM_HOME"]
@gem_path = ENV["GEM_PATH"]
# Set the Bundler UI to be a silent UI. We have to add the
# `silence` method to it because Bundler UI doesn't have it.
::Bundler.ui = ::Bundler::UI.new
if !::Bundler.ui.respond_to?(:silence)
ui = ::Bundler.ui
def ui.silence(*args)
yield
end
end
end
# Initializes Bundler and the various gem paths so that we can begin
# loading gems. This must only be called once.
def init!(plugins)
# Setup the Bundler configuration
@configfile = File.open(Tempfile.new("vagrant").path + "1", "w+")
@configfile.close
# Build up the Gemfile for our Bundler context. We make sure to
# lock Vagrant to our current Vagrant version. In addition to that,
# we add all our plugin dependencies.
@gemfile = build_gemfile(plugins)
# Set the environmental variables for Bundler
ENV["BUNDLE_CONFIG"] = @configfile.path
ENV["BUNDLE_GEMFILE"] = @gemfile.path
ENV["GEM_PATH"] =
"#{Vagrant.user_data_path.join("gems")}#{::File::PATH_SEPARATOR}#{@gem_path}"
Gem.clear_paths
end
# Installs the list of plugins.
#
# @param [Hash] plugins
# @return [Array<Gem::Specification>]
def install(plugins)
internal_install(plugins, nil)
end
# Installs a local '*.gem' file so that Bundler can find it.
#
# @param [String] path Path to a local gem file.
# @return [Gem::Specification]
def install_local(path)
# We have to do this load here because this file can be loaded
# before RubyGems is actually loaded.
require "rubygems/dependency_installer"
begin
require "rubygems/format"
rescue LoadError
# rubygems 2.x
end
# If we're installing from a gem file, determine the name
# based on the spec in the file.
pkg = if defined?(Gem::Format)
# RubyGems 1.x
Gem::Format.from_file_by_path(path)
else
# RubyGems 2.x
Gem::Package.new(path)
end
# Install the gem manually. If the gem exists locally, then
# Bundler shouldn't attempt to get it remotely.
with_isolated_gem do
installer = Gem::DependencyInstaller.new(
:document => [], :prerelease => false)
installer.install(path, "= #{pkg.spec.version}")
end
pkg.spec
end
# Update updates the given plugins, or every plugin if none is given.
#
# @param [Hash] plugins
# @param [Array<String>] specific Specific plugin names to update. If
# empty or nil, all plugins will be updated.
def update(plugins, specific)
specific ||= []
update = true
update = { gems: specific } if !specific.empty?
internal_install(plugins, update)
end
# Clean removes any unused gems.
def clean(plugins)
gemfile = build_gemfile(plugins)
lockfile = "#{gemfile.path}.lock"
definition = ::Bundler::Definition.build(gemfile, lockfile, nil)
root = File.dirname(gemfile.path)
with_isolated_gem do
runtime = ::Bundler::Runtime.new(root, definition)
runtime.clean
end
end
# During the duration of the yielded block, Bundler loud output
# is enabled.
def verbose
@monitor.synchronize do
begin
old_ui = ::Bundler.ui
require 'bundler/vendored_thor'
::Bundler.ui = ::Bundler::UI::Shell.new
yield
ensure
::Bundler.ui = old_ui
end
end
end
protected
# Builds a valid Gemfile for use with Bundler given the list of
# plugins.
#
# @return [Tempfile]
def build_gemfile(plugins)
f = File.open(Tempfile.new("vagrant").path + "2", "w+")
f.tap do |gemfile|
gemfile.puts(%Q[source "https://rubygems.org"])
gemfile.puts(%Q[source "http://gems.hashicorp.com"])
sources = plugins.values.map { |p| p["sources"] }.flatten.compact.uniq
sources.each do |source|
next if source == ""
gemfile.puts(%Q[source "#{source}"])
end
gemfile.puts(%Q[gem "vagrant", "= #{Vagrant::VERSION}"])
gemfile.puts("group :plugins do")
plugins.each do |name, plugin|
version = plugin["gem_version"]
version = nil if version == ""
opts = {}
if plugin["require"] && plugin["require"] != ""
opts[:require] = plugin["require"]
end
gemfile.puts(%Q[gem "#{name}", #{version.inspect}, #{opts.inspect}])
end
gemfile.puts("end")
gemfile.close
end
end
# This installs a set of plugins and optionally updates those gems.
#
# @param [Hash] plugins
# @param [Hash, Boolean] update If true, updates all plugins, otherwise
# can be a hash of options. See Bundler.definition.
# @return [Array<Gem::Specification>]
def internal_install(plugins, update)
gemfile = build_gemfile(plugins)
lockfile = "#{gemfile.path}.lock"
definition = ::Bundler::Definition.build(gemfile, lockfile, update)
root = File.dirname(gemfile.path)
opts = {}
with_isolated_gem do
::Bundler::Installer.install(root, definition, opts)
end
# TODO(mitchellh): clean gems here... for some reason when I put
# it in on install, we get a GemNotFound exception. Gotta investigate.
definition.specs
rescue ::Bundler::VersionConflict => e
raise Errors::PluginInstallVersionConflict,
conflicts: e.to_s.gsub("Bundler", "Vagrant")
end
def with_isolated_gem
# Remove bundler settings so that Bundler isn't loaded when building
# native extensions because it causes all sorts of problems.
old_rubyopt = ENV["RUBYOPT"]
old_gemfile = ENV["BUNDLE_GEMFILE"]
ENV["BUNDLE_GEMFILE"] = Tempfile.new("vagrant-gemfile").path
ENV["RUBYOPT"] = (ENV["RUBYOPT"] || "").gsub(/-rbundler\/setup\s*/, "")
# Set the GEM_HOME so gems are installed only to our local gem dir
ENV["GEM_HOME"] = Vagrant.user_data_path.join("gems").to_s
# Clear paths so that it reads the new GEM_HOME setting
Gem.paths = ENV
# Reset the all specs override that Bundler does
old_all = Gem::Specification._all
Gem::Specification.all = nil
# /etc/gemrc and so on.
old_config = nil
begin
old_config = Gem.configuration
rescue Psych::SyntaxError
# Just ignore this. This means that the ".gemrc" file has
# an invalid syntax and can't be loaded. We don't care, because
# when we set Gem.configuration to nil later, it'll force a reload
# if it is needed.
end
Gem.configuration = NilGemConfig.new
# Use a silent UI so that we have no output
Gem::DefaultUserInteraction.use_ui(Gem::SilentUI.new) do
return yield
end
ensure
ENV["BUNDLE_GEMFILE"] = old_gemfile
ENV["GEM_HOME"] = @gem_home
ENV["RUBYOPT"] = old_rubyopt
Gem.configuration = old_config
Gem.paths = ENV
Gem::Specification.all = old_all
end
# This is pretty hacky but it is a custom implementation of
# Gem::ConfigFile so that we don't load any gemrc files.
class NilGemConfig < Gem::ConfigFile
def initialize
# We _can not_ `super` here because that can really mess up
# some other configuration state. We need to just set everything
# directly.
@api_keys = {}
@args = []
@backtrace = false
@bulk_threshold = 1000
@hash = {}
@update_sources = true
@verbose = true
end
end
end
end