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Class: Puma::Launcher::BundlePruner

Relationships & Source Files
Inherits: Object
Defined in: lib/puma/launcher/bundle_pruner.rb

Overview

This class is used to pickup Gemfile changes during application restarts.

Class Method Summary

Instance Method Summary

Constructor Details

.new(original_argv, extra_runtime_dependencies, log_writer) ⇒ BundlePruner

[ GitHub ] 

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 10



def initialize(original_argv, extra_runtime_dependencies, log_writer)
  @original_argv = Array(original_argv)
  @extra_runtime_dependencies = Array(extra_runtime_dependencies)
  @log_writer = log_writer
end


  







Instance Method Details



  

    #extra_runtime_deps_paths   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 73



def extra_runtime_deps_paths
  t = @extra_runtime_dependencies.map do |dep_name|
    if (spec = spec_for_gem(dep_name))
      require_paths_for_gem(spec)
    else
      log "* Could not load extra dependency: #{dep_name}"
      nil
    end
  end
  t.flatten!; t.compact!; t
end


  








  

    #log(str)   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 97



def log(str)
  @log_writer.log(str)
end


  








  

    #paths_to_require_after_prune   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 69



def paths_to_require_after_prune
  puma_require_paths + extra_runtime_deps_paths
end


  








  

    #prune  
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 16



def prune
  return if ENV['PUMA_BUNDLER_PRUNED']
  return unless defined?(Bundler)

  require_rubygems_min_version!

  unless puma_wild_path
    log "! Unable to prune Bundler environment, continuing"
    return
  end

  dirs = paths_to_require_after_prune

  log '* Pruning Bundler environment'
  home = ENV['GEM_HOME']
  original_bundle_env = Bundler.original_env.select { |k, v| k.start_with?('BUNDLE_') && v }

  with_unbundled_env do
    ENV['GEM_HOME'] = home
    ENV['PUMA_BUNDLER_PRUNED'] = '1'
    original_bundle_env.each { |k, v| ENV[k] = v }
    args = [Gem.ruby, puma_wild_path, '-I', dirs.join(':')] + @original_argv
    # Defaults to true which breaks socket activation
    args += [{:close_others => false}]
    Kernel.exec(*args)
  end
end


  








  

    #puma_require_paths   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 85



def puma_require_paths
  require_paths_for_gem(spec_for_gem('puma'))
end


  








  

    #puma_wild_path   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 55



def puma_wild_path
  puma_lib_dir = puma_require_paths.detect { |x| File.exist? File.join(x, '../bin/puma-wild') }
  File.expand_path(File.join(puma_lib_dir, '../bin/puma-wild'))
end


  








  

    #require_paths_for_gem(gem_spec)   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 93



def require_paths_for_gem(gem_spec)
  gem_spec.full_require_paths
end


  








  

    #require_rubygems_min_version!   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 46



def require_rubygems_min_version!
  min_version = Gem::Version.new('2.2')

  return if min_version <= Gem::Version.new(Gem::VERSION)

  raise "prune_bundler is not supported on your version of RubyGems. " \
        "You must have RubyGems #{min_version}+ to use this feature."
end


  








  

    #spec_for_gem(gem_name)   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 89



def spec_for_gem(gem_name)
  Bundler.rubygems.loaded_specs(gem_name)
end


  








  

    #with_unbundled_env   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/launcher/bundle_pruner.rb', line 60



def with_unbundled_env
  bundler_ver = Gem::Version.new(Bundler::VERSION)
  if bundler_ver < Gem::Version.new('2.1.0')
    Bundler.with_clean_env { yield }
  else
    Bundler.with_unbundled_env { yield }
  end
end