Class: Jets::Gems::Extract::Gem

Inherits:
Base
  • Object
show all
Defined in:
lib/jets/gems/extract/gem.rb

Constant Summary collapse

VERSION_PATTERN = 
/-(\d+\.\d+.*)/

Instance Attribute Summary

Attributes inherited from Base

#source_url

Instance Method Summary collapse

Methods inherited from Base

#clean_downloads, #download_file, #initialize, #log_level=, #project_root, #say, #sh, #unzip, #url_exists?

Constructor Details

This class inherits a constructor from Jets::Gems::Extract::Base

Instance Method Details

#download_gem ⇒ Object

Downloads and extracts the linux gem into the proper directory. Extracts to: . (current directory)

It produces a ‘bundled` folder. The folder contains the re-produced directory structure. Example with the gem: byebug-9.1.0

vendor/gems/ruby/2.5.0/extensions/x86_64-darwin-16/2.5.0-static/byebug-9.1.0



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# File 'lib/jets/gems/extract/gem.rb', line 57

def download_gem
  # download - also move to /tmp/jets/demo/compiled_gems folder
  url = gem_url
  tarball_dest = download_file(url, download_path(File.basename(url)))
  unless tarball_dest
    message = "Url: #{url} not found"
    if @options[:exit_on_error]
      say message
      exit
    else
      raise NotFound.new(message)
    end
  end
  say "Downloaded to: #{tarball_dest}"
  tarball_dest
end

#download_path(filename) ⇒ Object 



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# File 'lib/jets/gems/extract/gem.rb', line 74

def download_path(filename)
  "#{@downloads_root}/downloads/gems/#{filename}"
end

#full_gem_name ⇒ Object

ensure that we always have the full gem name



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# File 'lib/jets/gems/extract/gem.rb', line 31

def full_gem_name
  return @full_gem_name if @full_gem_name

  if @name.match(VERSION_PATTERN)
    @full_gem_name = @name
    return @full_gem_name
  end

  # name doesnt have a version yet, so grab the latest version and add it
  version = Gems.versions(@name).first
  @full_gem_name = "#{@name}-#{version["number"]}"
end

#gem_name ⇒ Object 



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# File 'lib/jets/gems/extract/gem.rb', line 44

def gem_name
  full_gem_name.gsub(VERSION_PATTERN,'') # folder: byebug
end

#gem_url ⇒ Object

full_gem_name: byebug-9.1.0



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# File 'lib/jets/gems/extract/gem.rb', line 97

def gem_url
  "#{source_url}/gems/#{ruby_folder}/#{gem_name}/#{full_gem_name}.zip"
end

#remove_current_gem ⇒ Object

Finds any currently install gems that matched with the gem name and version and remove them first. We clean up the current install gems first in case it was previously installed and has different *.so files that can be accidentally required. This happened with the pg gem.



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# File 'lib/jets/gems/extract/gem.rb', line 83

def remove_current_gem
  say "Removing current #{full_gem_name} gem installation:"
  gem_dirs = Dir.glob("#{project_root}/**/*").select do |path|
              File.directory?(path) &&
              path =~ %r{vendor/gems} &&
              File.basename(path) == full_gem_name
            end
  gem_dirs.each do |dir|
    say "  rm -rf #{dir}"
    FileUtils.rm_rf(dir)
  end
end

#ruby_folder ⇒ Object 



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# File 'lib/jets/gems/extract/gem.rb', line 101

def ruby_folder
  Jets::Gems.ruby_folder
end

#run ⇒ Object 



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# File 'lib/jets/gems/extract/gem.rb', line 14

def run
  say "Looking for #{full_gem_name} gem in: #{@options[:source_url]}"
  clean_downloads(:gems) if @options[:clean]
  zipfile_path = download_gem
  remove_current_gem
  unzip_file(zipfile_path)
  say("Gem #{full_gem_name} unpacked at #{project_root}")
end

#unzip_file(zipfile_path) ⇒ Object 



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# File 'lib/jets/gems/extract/gem.rb', line 23

def unzip_file(zipfile_path)
  dest = "#{Jets.build_root}/stage/opt"
  say "Unpacking into #{dest}"
  FileUtils.mkdir_p(dest)
  unzip(zipfile_path, dest)
end