Class: Jets::Builders::GemReplacer

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Includes:
Util
Defined in:
lib/jets/builders/gem_replacer.rb

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ GemReplacer

Returns a new instance of GemReplacer.



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# File 'lib/jets/builders/gem_replacer.rb', line 6

def initialize(options)
  @options = options
end

Instance Method Details

#rename_gem(gem_name) ⇒ Object 



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# File 'lib/jets/builders/gem_replacer.rb', line 31

def rename_gem(gem_name)
  ruby_folder = "#{Jets.build_root}/stage/opt/ruby/gems/#{Jets::Gems.ruby_folder}"
  gems_folder = "#{ruby_folder}/gems"
  expr = "#{gems_folder}/#{gem_name}-x*-{darwin,linux}"
  src = Dir.glob(expr).first
  return unless src

  dest = src.sub("-darwin", "-linux")
  FileUtils.mv(src, dest) unless File.exist?(dest) # looks like rename_gem actually runs twice
end

#ruby_folder ⇒ Object 



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# File 'lib/jets/builders/gem_replacer.rb', line 42

def ruby_folder
  Jets::Gems.ruby_folder
end

#run ⇒ Object 



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# File 'lib/jets/builders/gem_replacer.rb', line 10

def run
  # use_gemspec to resolve http-parser gem issue
  use_gemspec = !Jets::Turbo.afterburner? # gemspec approach breaks afterburner mode
  check = Jets::Gems::Check.new(use_gemspec: use_gemspec)
  if Jets.config.lambda.layers.empty?
    found_gems = check.run! # exits early if missing gems found
  else
    # assumes missing gems are in the provided custom layer by the user
    found_gems = check.run # does not exist early
  end

  # found gems will only have gems that were found
  found_gems.each do |gem_name|
    gem_extractor = Jets::Gems::Extract::Gem.new(gem_name, @options)
    gem_extractor.run
    rename_gem(gem_name)
  end

  tidy
end

#tidy ⇒ Object

remove unnecessary files to reduce package size



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# File 'lib/jets/builders/gem_replacer.rb', line 47

def tidy
  # project_root: /tmp/jets/demo/stage/code/
  # /tmp/jets/demo/stage/code/bundled
  tidy_gems("#{@options[:project_root]}/ruby/gems/#{ruby_folder}/*/gems/*")
  tidy_gems("#{@options[:project_root]}/ruby/gems/#{ruby_folder}/*/bundler/gems/*")
end

#tidy_gem(path) ⇒ Object

Clean up some unneeded files to try to keep the package size down In a generated jets app this made a decent 9% difference:

175M test2
191M test3



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# File 'lib/jets/builders/gem_replacer.rb', line 64

def tidy_gem(path)
  # remove top level tests and cache folders
  Dir.glob("#{path}/*").each do |path|
    next unless File.directory?(path)
    folder = File.basename(path)
    if %w[test tests spec features benchmark cache doc].include?(folder)
      FileUtils.rm_rf(path)
    end
  end

  Dir.glob("#{path}/**/*").each do |path|
    next unless File.file?(path)
    ext = File.extname(path)
    if %w[.rdoc .md .markdown].include?(ext) or
       path =~ /LICENSE|CHANGELOG|README/
      FileUtils.rm_f(path)
    end
  end
end

#tidy_gems(gems_path) ⇒ Object 



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# File 'lib/jets/builders/gem_replacer.rb', line 54

def tidy_gems(gems_path)
  Dir.glob(gems_path).each do |gem_path|
    tidy_gem(gem_path)
  end
end