class Bundler::ParallelInstaller

Attributes

size[R]

Public Class Methods

call(*args) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 77
def self.call(*args)
  new(*args).call
end
new(installer, all_specs, size, standalone, force) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 83
def initialize(installer, all_specs, size, standalone, force)
  @installer = installer
  @size = size
  @standalone = standalone
  @force = force
  @specs = all_specs.map {|s| SpecInstallation.new(s) }
  @spec_set = all_specs
end

Public Instance Methods

call() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 92
def call
  # Since `autoload` has the potential for threading issues on 1.8.7
  # TODO:  remove in bundler 2.0
  require "bundler/gem_remote_fetcher" if RUBY_VERSION < "1.9"

  check_for_corrupt_lockfile

  if @size > 1
    install_with_worker
  else
    install_serially
  end

  handle_error if @specs.any?(&:failed?)
  @specs
ensure
  worker_pool && worker_pool.stop
end
check_for_corrupt_lockfile() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 111
def check_for_corrupt_lockfile
  missing_dependencies = @specs.map do |s|
    [
      s,
      s.missing_lockfile_dependencies(@specs.map(&:name)),
    ]
  end.reject { |a| a.last.empty? }
  return if missing_dependencies.empty?

  warning = []
  warning << "Your lockfile was created by an old Bundler that left some things out."
  if @size != 1
    warning << "Because of the missing DEPENDENCIES, we can only install gems one at a time, instead of installing #{@size} at a time."
    @size = 1
  end
  warning << "You can fix this by adding the missing gems to your Gemfile, running bundle install, and then removing the gems from your Gemfile."
  warning << "The missing gems are:"

  missing_dependencies.each do |spec, missing|
    warning << "* #{missing.map(&:name).join(", ")} depended upon by #{spec.name}"
  end

  Bundler.ui.warn(warning.join("\n"))
end

Private Instance Methods

do_install(spec_install, worker_num) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 157
def do_install(spec_install, worker_num)
  gem_installer = Bundler::GemInstaller.new(
    spec_install.spec, @installer, @standalone, worker_num, @force
  )
  success, message = begin
    gem_installer.install_from_spec
  rescue => e
    raise e, "#{e}\n\n#{require_tree_for_spec(spec_install.spec)}"
  end
  if success
    spec_install.state = :installed
    spec_install.post_install_message = message unless message.nil?
  else
    spec_install.state = :failed
    spec_install.error = "#{message}\n\n#{require_tree_for_spec(spec_install.spec)}"
  end
  spec_install
end
enqueue_specs() click to toggle source

Keys in the remains hash represent uninstalled gems specs. We enqueue all gem specs that do not have any dependencies. Later we call this lambda again to install specs that depended on previously installed specifications. We continue until all specs are installed.

# File lib/bundler/installer/parallel_installer.rb, line 219
def enqueue_specs
  @specs.select(&:ready_to_enqueue?).each do |spec|
    if spec.dependencies_installed? @specs
      spec.state = :enqueued
      worker_pool.enq spec
    end
  end
end
finished_installing?() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 186
def finished_installing?
  @specs.all? do |spec|
    return true if spec.failed?
    spec.installed?
  end
end
handle_error() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 193
def handle_error
  errors = @specs.select(&:failed?).map(&:error)
  if exception = errors.find {|e| e.is_a?(Bundler::BundlerError) }
    raise exception
  end
  raise Bundler::InstallError, errors.map(&:to_s).join("\n\n")
end
install_serially() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 143
def install_serially
  until finished_installing?
    raise "failed to find a spec to enqueue while installing serially" unless spec_install = @specs.find(&:ready_to_enqueue?)
    spec_install.state = :enqueued
    do_install(spec_install, 0)
  end
end
install_with_worker() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 138
def install_with_worker
  enqueue_specs
  process_specs until finished_installing?
end
process_specs() click to toggle source

Dequeue a spec and save its post-install message and then enqueue the remaining specs. Some specs might've had to wait til this spec was installed to be processed so the call to `enqueue_specs` is important after every dequeue.

# File lib/bundler/installer/parallel_installer.rb, line 181
def process_specs
  worker_pool.deq
  enqueue_specs
end
require_tree_for_spec(spec) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 201
def require_tree_for_spec(spec)
  tree = @spec_set.what_required(spec)
  t = String.new("In #{File.basename(SharedHelpers.default_gemfile)}:\n")
  tree.each_with_index do |s, depth|
    t << "  " * depth.succ << s.name
    unless tree.last == s
      t << %( was resolved to #{s.version}, which depends on)
    end
    t << %(\n)
  end
  t
end
worker_pool() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 151
def worker_pool
  @worker_pool ||= Bundler::Worker.new @size, "Parallel Installer", lambda { |spec_install, worker_num|
    do_install(spec_install, worker_num)
  }
end