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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) ⇒ ParallelInstaller

[ GitHub ] 

  


# File 'lib/bundler/installer/parallel_installer.rb', line 72



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
  @rake = @specs.find {|s| s.name == "rake" }
end


  







Class Method Details



  

    .call(*args)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 66



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


  







Instance Attribute Details



  

    #finished_installing?  ⇒ Boolean  (readonly, private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 178



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 70



attr_reader :size


  







Instance Method Details



  

    #call  
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 82



def call
  if @rake
    do_install(@rake, 0)
    Gem::Specification.reset
  end

  if @size > 1
    install_with_worker
  else
    install_serially
  end

  check_for_unmet_dependencies

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


  








  

    #check_for_unmet_dependencies  
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 102



def check_for_unmet_dependencies
  unmet_dependencies = @specs.map do |s|
    [
      s,
      s.dependencies.reject {|dep| @specs.any? {|spec| dep.matches_spec?(spec.spec) } },
    ]
  end.reject {|a| a.last.empty? }
  return if unmet_dependencies.empty?

  warning = []
  warning << "Your lockfile doesn't include a valid resolution."
  warning << "You can fix this by regenerating your lockfile or manually editing the bad locked gems to a version that satisfies all dependencies."
  warning << "The unmet dependencies are:"

  unmet_dependencies.each do |spec, unmet_spec_dependencies|
    unmet_spec_dependencies.each do |unmet_spec_dependency|
      found = @specs.find {|s| s.name == unmet_spec_dependency.name && !unmet_spec_dependency.matches_spec?(s.spec) }
      warning << "* #{unmet_spec_dependency}, dependency of #{spec.full_name}, unsatisfied by #{found.full_name}"
    end
  end

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


  








  

    #do_install(spec_install, worker_num)   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 151



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
  )
  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 211



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


  








  

    #failed_specs   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 128



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


  








  

    #handle_error   (private)
  



  

    
  





  
Raises:





  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 185



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 137



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 132



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 173



def process_specs
  worker_pool.deq
  enqueue_specs
end


  








  

    #require_tree_for_spec(spec)   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/installer/parallel_installer.rb', line 193



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 145



def worker_pool
  @worker_pool ||= Bundler::Worker.new @size, "Parallel Installer", lambda {|spec_install, worker_num|
    do_install(spec_install, worker_num)
  }
end