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bundler-2.2.33
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Filename :
parallel_installer.rb
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# frozen_string_literal: true require_relative "../worker" require_relative "gem_installer" module Bundler class ParallelInstaller class SpecInstallation attr_accessor :spec, :name, :full_name, :post_install_message, :state, :error def initialize(spec) @spec = spec @name = spec.name @full_name = spec.full_name @state = :none @post_install_message = "" @error = nil end def installed? state == :installed end def enqueued? state == :enqueued end def failed? state == :failed end def ready_to_enqueue? state == :none end def has_post_install_message? !post_install_message.empty? end def ignorable_dependency?(dep) dep.type == :development || dep.name == @name end # Checks installed dependencies against spec's dependencies to make # sure needed dependencies have been installed. def dependencies_installed?(all_specs) installed_specs = all_specs.select(&:installed?).map(&:name) dependencies.all? {|d| installed_specs.include? d.name } end # Represents only the non-development dependencies, the ones that are # itself and are in the total list. def dependencies @dependencies ||= all_dependencies.reject {|dep| ignorable_dependency? dep } end def missing_lockfile_dependencies(all_spec_names) dependencies.reject {|dep| all_spec_names.include? dep.name } end # Represents all dependencies def all_dependencies @spec.dependencies end def to_s "#<#{self.class} #{full_name} (#{state})>" end end def self.call(*args) new(*args).call end attr_reader :size 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 def call check_for_corrupt_lockfile 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 && worker_pool.stop end 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 trying to 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| warning << "* #{unmet_spec_dependency}, depended upon #{spec.full_name}, unsatisfied by #{@specs.find {|s| s.name == unmet_spec_dependency.name && !unmet_spec_dependency.matches_spec?(s.spec) }.full_name}" end end Bundler.ui.warn(warning.join("\n")) end def check_for_corrupt_lockfile missing_dependencies = @specs.map do |s| [ s, s.missing_lockfile_dependencies(@specs.map(&:name)), ] end.reject {|a| a.last.empty? } return if missing_dependencies.empty? warning = [] warning << "Your lockfile was created by an old Bundler that left some things out." if @size != 1 warning << "Because of the missing DEPENDENCIES, we can only install gems one at a time, instead of installing #{@size} at a time." @size = 1 end warning << "You can fix this by adding the missing gems to your Gemfile, running bundle install, and then removing the gems from your Gemfile." warning << "The missing gems are:" missing_dependencies.each do |spec, missing| warning << "* #{missing.map(&:name).join(", ")} depended upon by #{spec.name}" end Bundler.ui.warn(warning.join("\n")) end private def failed_specs @specs.select(&:failed?) end def install_with_worker enqueue_specs process_specs until finished_installing? end 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 def worker_pool @worker_pool ||= Bundler::Worker.new @size, "Parallel Installer", lambda {|spec_install, worker_num| do_install(spec_install, worker_num) } end 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 # 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. def process_specs worker_pool.deq enqueue_specs end def finished_installing? @specs.all? do |spec| return true if spec.failed? spec.installed? end end 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 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 # 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. 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 end end