Class: Homebrew::Cmd::FetchCmd Private

Inherits:
AbstractCommand show all
Includes:
Fetch
Defined in:
cmd/fetch.rb,
sorbet/rbi/dsl/homebrew/cmd/fetch_cmd.rbi

This class is part of a private API. This class may only be used in the Homebrew/brew repository. Third parties should avoid using this class if possible, as it may be removed or changed without warning.

Defined Under Namespace

Classes: Args, Spinner

Constant Summary collapse

FETCH_MAX_TRIES =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning. 

5

Instance Method Summary collapse

Methods included from Fetch

#fetch_bottle?

Methods inherited from AbstractCommand

command, command_name, dev_cmd?, #initialize, parser, ruby_cmd?

Constructor Details

This class inherits a constructor from Homebrew::AbstractCommand

Instance Method Details

#args ⇒ Homebrew::Cmd::FetchCmd::Args

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



10
 
# File 'sorbet/rbi/dsl/homebrew/cmd/fetch_cmd.rbi', line 10

def args; end

#concurrency ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'cmd/fetch.rb', line 72

def concurrency
  @concurrency ||= args.concurrency&.to_i || 1
end

#download_queue ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'cmd/fetch.rb', line 76

def download_queue
  @download_queue ||= begin
    require "download_queue"
    DownloadQueue.new(concurrency)
  end
end

#run ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

This method returns an undefined value.



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# File 'cmd/fetch.rb', line 116

def run
  Formulary.enable_factory_cache!

  bucket = if args.deps?
    args.named.to_formulae_and_casks.flat_map do |formula_or_cask|
      case formula_or_cask
      when Formula
        formula = formula_or_cask
        [formula, *formula.recursive_dependencies.map(&:to_formula)]
      else
        formula_or_cask
      end
    end
  else
    args.named.to_formulae_and_casks
  end.uniq

  os_arch_combinations = args.os_arch_combinations

  puts "Fetching: #{bucket * ", "}" if bucket.size > 1
  bucket.each do |formula_or_cask|
    case formula_or_cask
    when Formula
      formula = T.cast(formula_or_cask, Formula)
      ref = formula.loaded_from_api? ? formula.full_name : formula.path

      os_arch_combinations.each do |os, arch|
        SimulateSystem.with(os:, arch:) do
          formula = Formulary.factory(ref, args.HEAD? ? :head : :stable)

          formula.print_tap_action verb: "Fetching"

          fetched_bottle = false
          if fetch_bottle?(
            formula,
            force_bottle:               args.force_bottle?,
            bottle_tag:                 args.bottle_tag&.to_sym,
            build_from_source_formulae: args.build_from_source_formulae,
            os:                         args.os&.to_sym,
            arch:                       args.arch&.to_sym,
          )
            begin
              formula.clear_cache if args.force?

              bottle_tag = if (bottle_tag = args.bottle_tag&.to_sym)
                Utils::Bottles::Tag.from_symbol(bottle_tag)
              else
                Utils::Bottles::Tag.new(system: os, arch:)
              end

              bottle = formula.bottle_for_tag(bottle_tag)

              if bottle.nil?
                opoo "Bottle for tag #{bottle_tag.to_sym.inspect} is unavailable."
                next
              end

              if (manifest_resource = bottle.github_packages_manifest_resource)
                fetch_downloadable(manifest_resource)
              end
              fetch_downloadable(bottle)
            rescue Interrupt
              raise
            rescue => e
              raise if Homebrew::EnvConfig.developer?

              fetched_bottle = false
              onoe e.message
              opoo "Bottle fetch failed, fetching the source instead."
            else
              fetched_bottle = true
            end
          end

          next if fetched_bottle

          fetch_downloadable(formula.resource)

          formula.resources.each do |r|
            fetch_downloadable(r)
            r.patches.each { |patch| fetch_downloadable(patch.resource) if patch.external? }
          end

          formula.patchlist.each { |patch| fetch_downloadable(patch.resource) if patch.external? }
        end
      end
    else
      cask = formula_or_cask
      ref = cask.loaded_from_api? ? cask.full_name : cask.sourcefile_path

      os_arch_combinations.each do |os, arch|
        next if os == :linux

        SimulateSystem.with(os:, arch:) do
          cask = Cask::CaskLoader.load(ref)

          if cask.url.nil? || cask.sha256.nil?
            opoo "Cask #{cask} is not supported on os #{os} and arch #{arch}"
            next
          end

          quarantine = args.quarantine?
          quarantine = true if quarantine.nil?

          download = Cask::Download.new(cask, quarantine:)
          fetch_downloadable(download)
        end
      end
    end
  end

  if concurrency == 1
    downloads.each do |downloadable, promise|
      promise.wait!
    rescue ChecksumMismatchError => e
      opoo "#{downloadable.download_type.capitalize} reports different checksum: #{e.expected}"
      Homebrew.failed = true if downloadable.is_a?(Resource::Patch)
    end
  else
     = Spinner.new
    remaining_downloads = downloads.dup
    previous_pending_line_count = 0

    begin
      $stdout.print Tty.hide_cursor
      $stdout.flush

      output_message = lambda do |downloadable, future|
        status = case future.state
        when :fulfilled
          "#{Tty.green}✔︎#{Tty.reset}"
        when :rejected
          "#{Tty.red}✘#{Tty.reset}"
        when :pending, :processing
          "#{Tty.blue}#{}#{Tty.reset}"
        else
          raise future.state.to_s
        end

        message = "#{downloadable.download_type.capitalize} #{downloadable.name}"
        $stdout.puts "#{status} #{message}"
        $stdout.flush

        if future.rejected? && (e = future.reason).is_a?(ChecksumMismatchError)
          opoo "#{downloadable.download_type.capitalize} reports different checksum: #{e.expected}"
          Homebrew.failed = true if downloadable.is_a?(Resource::Patch)
          next 2
        end

        1
      end

      until remaining_downloads.empty?
        begin
          finished_states = [:fulfilled, :rejected]

          finished_downloads, remaining_downloads = remaining_downloads.partition do |_, future|
            finished_states.include?(future.state)
          end

          finished_downloads.each do |downloadable, future|
            previous_pending_line_count -= 1
            $stdout.print Tty.clear_to_end
            $stdout.flush
            output_message.call(downloadable, future)
          end

          previous_pending_line_count = 0
          remaining_downloads.each do |downloadable, future|
            # FIXME: Allow printing full terminal height.
            break if previous_pending_line_count >= [concurrency, (Tty.height - 1)].min

            $stdout.print Tty.clear_to_end
            $stdout.flush
            previous_pending_line_count += output_message.call(downloadable, future)
          end

          if previous_pending_line_count.positive?
            $stdout.print Tty.move_cursor_up_beginning(previous_pending_line_count)
            $stdout.flush
          end

          sleep 0.05
        rescue Interrupt
          remaining_downloads.each do |_, future|
            # FIXME: Implement cancellation of running downloads.
          end

          download_queue.cancel

          if previous_pending_line_count.positive?
            $stdout.print Tty.move_cursor_down(previous_pending_line_count - 1)
            $stdout.flush
          end

          raise
        end
      end
    ensure
      $stdout.print Tty.show_cursor
      $stdout.flush
    end
  end
ensure
  download_queue.shutdown
end