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Class: Bundler::ParallelInstaller

Relationships & Source Files
Namespace Children
Classes:
SpecInstallation
Inherits: Object
Defined in: lib/bundler/installer/parallel_installer.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(installer, all_specs, size, standalone, force, local: false, skip: nil) ⇒ ParallelInstaller

[ GitHub ] 

  


# File 'lib/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


  







Class Method Details



  

    .call(*args, **kwargs)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 65



def self.call(*args, **kwargs)
  new(*args, **kwargs).call
end


  







Instance Attribute Details



  

    #finished_installing?  ⇒ Boolean  (readonly, private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 155



def finished_installing?
  @specs.all? do |spec|
    return true if spec.failed?
    spec.installed?
  end
end


  








  

    #size   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 69



attr_reader :size


  







Instance Method Details



  

    #call  
  

  [ GitHub ]


  

  


# File 'lib/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


  








  

    #do_install(spec_install, worker_num)   (private)
  

  [ GitHub ]


  

  


# File 'lib/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   (private)
  



  

    

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.


  



  [ GitHub ]


  

  


# File 'lib/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   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 105



def failed_specs
  @specs.select(&:failed?)
end


  








  

    #handle_error   (private)
  



  

    
  





  
Raises:





  [ GitHub ]


  

  


# File 'lib/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   (private)
  

  [ GitHub ]


  

  


# File 'lib/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   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 109



def install_with_worker
  enqueue_specs
  process_specs until finished_installing?
end


  








  

    #process_specs   (private)
  



  

    

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.


  



  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 150



def process_specs
  worker_pool.deq
  enqueue_specs
end


  








  

    #require_tree_for_spec(spec)   (private)
  

  [ GitHub ]


  

  


# File 'lib/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   (private)
  

  [ GitHub ]


  

  


# File 'lib/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