Class: Gel::LockLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/gel/lock_loader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, gemfile = nil) ⇒ LockLoader

Returns a new instance of LockLoader.



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# File 'lib/gel/lock_loader.rb', line 7

def initialize(filename, gemfile = nil)
  @filename = filename
  @gemfile = gemfile
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/gel/lock_loader.rb', line 4

def filename
  @filename
end

#gemfile ⇒ Object (readonly)

Returns the value of attribute gemfile.



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# File 'lib/gel/lock_loader.rb', line 5

def gemfile
  @gemfile
end

Instance Method Details

#activate(env, base_store, install: false, output: nil) ⇒ Object 



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# File 'lib/gel/lock_loader.rb', line 63

def activate(env, base_store, install: false, output: nil)
  locked_store = Gel::LockedStore.new(base_store)

  locks = {}

  if install
    require_relative "installer"
    installer = Gel::Installer.new(base_store)
  end

  filtered_gems = Hash.new(nil)
  top_gems = []
  if gemfile && env
    gemfile.gems.each do |name, *|
      filtered_gems[name] = false
    end
    env.filtered_gems(gemfile.gems).each do |name, *|
      top_gems << name
      filtered_gems[name] = true
    end
  elsif pair = lock_content.assoc("DEPENDENCIES")
    _, list = pair
    top_gems = list.map { |name| name.split(" ", 2)[0].chomp("!") }
    top_gems.each do |name|
      filtered_gems[name] = true
    end
  end

  gems = {}
  each_gem do |section, body, name, version, platform, deps|
    next if env && !env.platform?(platform)

    gems[name] = [section, body, version, platform, deps]

    installer.known_dependencies name => deps.map(&:first) if installer
  end

  walk = lambda do |name|
    filtered_gems[name] = true
    next unless gems[name]
    gems[name].last.map(&:first).each do |dep_name|
      walk[dep_name] unless filtered_gems[dep_name]
    end
  end

  top_gems.each(&walk)

  require_relative "git_depot"
  require_relative "work_pool"

  Gel::WorkPool.new(8) do |work_pool|
    git_depot = Gel::GitDepot.new(base_store)

    gems.each do |name, (section, body, version, platform, _deps)|
      next unless filtered_gems[name]

      if section == :gem
        if installer && !base_store.gem?(name, version, platform)
          require_relative "catalog"
          catalogs = body["remote"].map { |r| Gel::Catalog.new(r, work_pool: work_pool) }
          installer.install_gem(catalogs, name, platform ? "#{version}-#{platform}" : version)
        end

        locks[name] = version
      else
        if section == :git
          remote = body["remote"].first
          revision = body["revision"].first

          dir = git_depot.git_path(remote, revision)
          if installer && !Dir.exist?(dir)
            installer.load_git_gem(remote, revision, name)

            locks[name] = -> { Gel::DirectGem.new(dir, name, version) }
            next
          end
        else
          dir = File.expand_path(body["remote"].first, File.dirname(filename))
        end

        locks[name] = Gel::DirectGem.new(dir, name, version)
      end
    end

    installer.wait(output) if installer

    locks.each do |name, locked|
      locks[name] = locked.call if locked.is_a?(Proc)
    end
  end

  locked_store.lock(locks)

  if env
    env.open(locked_store)

    env.gems_from_lock(locks)
  end

  locked_store
end

#bundler_version ⇒ Object 



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# File 'lib/gel/lock_loader.rb', line 50

def bundler_version
  _, (version,) = lock_content.assoc("BUNDLED WITH")
  version
end

#each_gem ⇒ Object 



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# File 'lib/gel/lock_loader.rb', line 16

def each_gem
  lock_content.each do |(section, body)|
    case section
    when "GEM", "PATH", "GIT"
      specs = body["specs"]
      specs.each do |gem_spec, dep_specs|
        gem_spec =~ /\A(.+) \(([^-]+)(?:-(.+))?\)\z/
        name, version, platform = $1, $2, $3

        if dep_specs
          deps = dep_specs.map do |spec|
            spec =~ /\A(.+?)(?: \((.+)\))?\z/
            [$1, $2 ? $2.split(", ") : []]
          end
        else
          deps = []
        end

        sym =
          case section
          when "GEM"; :gem
          when "PATH"; :path
          when "GIT"; :git
          end
        yield sym, body, name, version, platform, deps
      end
    when "PLATFORMS", "DEPENDENCIES"
    when "BUNDLED WITH"
    else
      warn "Unknown lockfile section #{section.inspect}"
    end
  end
end

#gem_names ⇒ Object 



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# File 'lib/gel/lock_loader.rb', line 55

def gem_names
  names = []
  each_gem do |section, body, name, version, platform, deps|
    names << name
  end
  names
end

#lock_content ⇒ Object 



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# File 'lib/gel/lock_loader.rb', line 12

def lock_content
  @lock_content ||= Gel::LockParser.new.parse(File.read(filename))
end