class Bundler::ParallelInstaller

Attributes

size[R]

Public Class Methods

call(*args, **kwargs) click to toggle source
# File bundler/installer/parallel_installer.rb, line 65
def self.call(*args, **kwargs)
  new(*args, **kwargs).call
end
new(installer, all_specs, size, standalone, force, local: false, skip: nil) click to toggle source
# File bundler/installer/parallel_installer.rb, line 71
def initialize(installer, all_specs, size, standalone, force, local: false, skip: nil)
  @installer = installer
  @size = size
  @standalone = standalone
  @force = force
  @local = local
  @specs = all_specs.map {|s| SpecInstallation.new(s) }
  @specs.each do |spec_install|
    spec_install.state = :installed if skip.include?(spec_install.name)
  end if skip
  @spec_set = all_specs
  @rake = @specs.find {|s| s.name == "rake" unless s.installed? }
end

Public Instance Methods

call() click to toggle source
# File bundler/installer/parallel_installer.rb, line 85
def call
  if @rake
    do_install(@rake, 0)
    Gem::Specification.reset
  end

  if @size > 1
    install_with_worker
  else
    install_serially
  end

  handle_error if failed_specs.any?
  @specs
ensure
  worker_pool&.stop
end

Private Instance Methods

do_install(spec_install, worker_num) click to toggle source
# File bundler/installer/parallel_installer.rb, line 128
def do_install(spec_install, worker_num)
  Plugin.hook(Plugin::Events::GEM_BEFORE_INSTALL, spec_install)
  gem_installer = Bundler::GemInstaller.new(
    spec_install.spec, @installer, @standalone, worker_num, @force, @local
  )
  success, message = gem_installer.install_from_spec
  if success
    spec_install.state = :installed
    spec_install.post_install_message = message unless message.nil?
  else
    spec_install.error = "#{message}\n\n#{require_tree_for_spec(spec_install.spec)}"
    spec_install.state = :failed
  end
  Plugin.hook(Plugin::Events::GEM_AFTER_INSTALL, spec_install)
  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 bundler/installer/parallel_installer.rb, line 188
def enqueue_specs
  installed_specs = {}
  @specs.each do |spec|
    next unless spec.installed?
    installed_specs[spec.name] = true
  end

  @specs.each do |spec|
    if spec.ready_to_enqueue? && spec.dependencies_installed?(installed_specs)
      spec.state = :enqueued
      worker_pool.enq spec
    end
  end
end
failed_specs() click to toggle source
# File bundler/installer/parallel_installer.rb, line 105
def failed_specs
  @specs.select(&:failed?)
end
finished_installing?() click to toggle source
# File bundler/installer/parallel_installer.rb, line 155
def finished_installing?
  @specs.all? do |spec|
    return true if spec.failed?
    spec.installed?
  end
end
handle_error() click to toggle source
# File bundler/installer/parallel_installer.rb, line 162
def handle_error
  errors = failed_specs.map(&:error)
  if exception = errors.find {|e| e.is_a?(Bundler::BundlerError) }
    raise exception
  end
  raise Bundler::InstallError, errors.join("\n\n")
end
install_serially() click to toggle source
# File bundler/installer/parallel_installer.rb, line 114
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 bundler/installer/parallel_installer.rb, line 109
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 bundler/installer/parallel_installer.rb, line 150
def process_specs
  worker_pool.deq
  enqueue_specs
end
require_tree_for_spec(spec) click to toggle source
# File bundler/installer/parallel_installer.rb, line 170
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 bundler/installer/parallel_installer.rb, line 122
def worker_pool
  @worker_pool ||= Bundler::Worker.new @size, "Parallel Installer", lambda {|spec_install, worker_num|
    do_install(spec_install, worker_num)
  }
end