class Bundler::Installer
Attributes
Public Class Methods
Begins the installation process for Bundler
. For more information see the run
method on this class.
# File bundler/installer.rb, line 20 def self.install(root, definition, options = {}) installer = new(root, definition) Plugin.hook(Plugin::Events::GEM_BEFORE_INSTALL_ALL, definition.dependencies) installer.run(options) Plugin.hook(Plugin::Events::GEM_AFTER_INSTALL_ALL, definition.dependencies) installer end
# File bundler/installer.rb, line 28 def initialize(root, definition) @root = root @definition = definition @post_install_messages = {} end
Public Instance Methods
# File bundler/installer.rb, line 98 def generate_bundler_executable_stubs(spec, options = {}) if options[:binstubs_cmd] && spec.executables.empty? options = {} spec.runtime_dependencies.each do |dep| bins = @definition.specs[dep].first.executables options[dep.name] = bins unless bins.empty? end if options.any? Bundler.ui.warn "#{spec.name} has no executables, but you may want " \ "one from a gem it depends on." options.each {|name, bins| Bundler.ui.warn " #{name} has: #{bins.join(", ")}" } else Bundler.ui.warn "There are no executables for the gem #{spec.name}." end return end # double-assignment to avoid warnings about variables that will be used by ERB bin_path = Bundler.bin_path bin_path = bin_path relative_gemfile_path = Bundler.default_gemfile.relative_path_from(bin_path) relative_gemfile_path = relative_gemfile_path ruby_command = Thor::Util.ruby_command ruby_command = ruby_command template_path = File.expand_path("templates/Executable", __dir__) if spec.name == "bundler" template_path += ".bundler" spec.executables = %(bundle) end template = File.read(template_path) exists = [] spec.executables.each do |executable| binstub_path = "#{bin_path}/#{executable}" if File.exist?(binstub_path) && !options[:force] exists << executable next end mode = Gem.win_platform? ? "wb:UTF-8" : "w" require "erb" content = ERB.new(template, trim_mode: "-").result(binding) File.write(binstub_path, content, mode: mode, perm: 0o777 & ~File.umask) if Gem.win_platform? || options[:all_platforms] prefix = "@ruby -x \"%~f0\" %*\n@exit /b %ERRORLEVEL%\n\n" File.write("#{binstub_path}.cmd", prefix + content, mode: mode) end end if options[:binstubs_cmd] && exists.any? case exists.size when 1 Bundler.ui.warn "Skipped #{exists[0]} since it already exists." when 2 Bundler.ui.warn "Skipped #{exists.join(" and ")} since they already exist." else items = exists[0...-1].empty? ? nil : exists[0...-1].join(", ") skipped = [items, exists[-1]].compact.join(" and ") Bundler.ui.warn "Skipped #{skipped} since they already exist." end Bundler.ui.warn "If you want to overwrite skipped stubs, use --force." end end
# File bundler/installer.rb, line 163 def generate_standalone_bundler_executable_stubs(spec, options = {}) # double-assignment to avoid warnings about variables that will be used by ERB bin_path = Bundler.bin_path unless path = Bundler.settings[:path] raise "Can't standalone without an explicit path set" end standalone_path = Bundler.root.join(path).relative_path_from(bin_path) standalone_path = standalone_path template = File.read(File.expand_path("templates/Executable.standalone", __dir__)) ruby_command = Thor::Util.ruby_command ruby_command = ruby_command spec.executables.each do |executable| next if executable == "bundle" executable_path = Pathname(spec.full_gem_path).join(spec.bindir, executable).relative_path_from(bin_path) executable_path = executable_path mode = Gem.win_platform? ? "wb:UTF-8" : "w" require "erb" content = ERB.new(template, trim_mode: "-").result(binding) File.write("#{bin_path}/#{executable}", content, mode: mode, perm: 0o755) if Gem.win_platform? || options[:all_platforms] prefix = "@ruby -x \"%~f0\" %*\n@exit /b %ERRORLEVEL%\n\n" File.write("#{bin_path}/#{executable}.cmd", prefix + content, mode: mode) end end end
Runs the install procedures for a specific Gemfile.
Firstly, this method will check to see if ‘Bundler.bundle_path` exists and if not then Bundler
will create the directory. This is usually the same location as RubyGems which typically is the `~/.gem` directory unless other specified.
Secondly, it checks if Bundler
has been configured to be “frozen”. Frozen ensures that the Gemfile and the Gemfile.lock file are matching. This stops a situation where a developer may update the Gemfile but may not run ‘bundle install`, which leads to the Gemfile.lock file not being correctly updated. If this file is not correctly updated then any other developer running `bundle install` will potentially not install the correct gems.
Thirdly, Bundler
checks if there are any dependencies specified in the Gemfile. If there are no dependencies specified then Bundler
returns a warning message stating so and this method returns.
Fourthly, Bundler
checks if the Gemfile.lock exists, and if so then proceeds to set up a definition based on the Gemfile and the Gemfile.lock. During this step Bundler
will also download information about any new gems that are not in the Gemfile.lock and resolve any dependencies if needed.
Fifthly, Bundler
resolves the dependencies either through a cache of gems or by remote. This then leads into the gems being installed, along with stubs for their executables, but only if the –binstubs option has been passed or Bundler.options has been set earlier.
Sixthly, a new Gemfile.lock is created from the installed gems to ensure that the next time that a user runs ‘bundle install` they will receive any updates from this process.
Finally, if the user has specified the standalone flag, Bundler
will generate the needed require paths and save them in a ‘setup.rb` file. See `bundle standalone –help` for more information.
# File bundler/installer.rb, line 68 def run(options) Bundler.create_bundle_path ProcessLock.lock do if Bundler.frozen_bundle? @definition.ensure_equivalent_gemfile_and_lockfile(options[:deployment]) end if @definition.dependencies.empty? Bundler.ui.warn "The Gemfile specifies no dependencies" lock return end if resolve_if_needed(options) ensure_specs_are_compatible! load_plugins options.delete(:jobs) else options[:jobs] = 1 # to avoid the overhead of Bundler::Worker end install(options) Gem::Specification.reset # invalidate gem specification cache so that installed gems are immediately available lock Standalone.new(options[:standalone], @definition).generate if options[:standalone] end end
Private Instance Methods
# File bundler/installer.rb, line 230 def ensure_specs_are_compatible! @definition.specs.each do |spec| unless spec.matches_current_ruby? raise InstallError, "#{spec.full_name} requires ruby version #{spec.required_ruby_version}, " \ "which is incompatible with the current version, #{Gem.ruby_version}" end unless spec.matches_current_rubygems? raise InstallError, "#{spec.full_name} requires rubygems version #{spec.required_rubygems_version}, " \ "which is incompatible with the current version, #{Gem.rubygems_version}" end end end
the order that the resolver provides is significant, since dependencies might affect the installation of a gem. that said, it’s a rare situation (other than rake), and parallel installation is SO MUCH FASTER. so we let people opt in.
# File bundler/installer.rb, line 198 def install(options) force = options["force"] jobs = installation_parallelization(options) install_in_parallel jobs, options[:standalone], force end
# File bundler/installer.rb, line 243 def install_in_parallel(size, standalone, force = false) spec_installations = ParallelInstaller.call(self, @definition.specs, size, standalone, force) spec_installations.each do |installation| post_install_messages[installation.name] = installation.post_install_message if installation.has_post_install_message? end end
# File bundler/installer.rb, line 204 def installation_parallelization(options) if jobs = options.delete(:jobs) return jobs end if jobs = Bundler.settings[:jobs] return jobs end Bundler.settings.processor_count end
# File bundler/installer.rb, line 216 def load_plugins Gem.load_plugins requested_path_gems = @definition.requested_specs.select {|s| s.source.is_a?(Source::Path) } path_plugin_files = requested_path_gems.map do |spec| Bundler.rubygems.spec_matches_for_glob(spec, "rubygems_plugin#{Bundler.rubygems.suffix_pattern}") rescue TypeError error_message = "#{spec.name} #{spec.version} has an invalid gemspec" raise Gem::InvalidSpecificationException, error_message end.flatten Gem.load_plugin_files(path_plugin_files) Gem.load_env_plugins end
# File bundler/installer.rb, line 263 def lock @definition.lock end
returns whether or not a re-resolve was needed
# File bundler/installer.rb, line 251 def resolve_if_needed(options) @definition.prefer_local! if options["prefer-local"] if options["local"] || (@definition.no_resolve_needed? && !@definition.missing_specs?) @definition.resolve_with_cache! false else @definition.resolve_remotely! true end end