class Bundler::Definition

Attributes

dependencies[R]
locked_deps[R]
platforms[R]
ruby_version[R]
sources[R]

Public Class Methods

build(gemfile, lockfile, unlock) click to toggle source

Given a gemfile and lockfile creates a Bundler definition

@param gemfile [Pathname] Path to Gemfile @param lockfile [Pathname,nil] Path to Gemfile.lock @param unlock [Hash, Boolean, nil] Gems that have been requested

to be updated or true if all gems should be updated

@return [Bundler::Definition]

# File lib/bundler/definition.rb, line 18
def self.build(gemfile, lockfile, unlock)
  unlock ||= {}
  gemfile = Pathname.new(gemfile).expand_path

  unless gemfile.file?
    raise GemfileNotFound, "#{gemfile} not found"
  end

  Dsl.evaluate(gemfile, lockfile, unlock)
end
new(lockfile, dependencies, sources, unlock, ruby_version = nil) click to toggle source

How does the new system work?

  • Load information from Gemfile and Lockfile

  • Invalidate stale locked specs

  • All specs from stale source are stale

  • All specs that are reachable only through a stale dependency are stale.

  • If all fresh dependencies are satisfied by the locked

specs, then we can try to resolve locally.

@param lockfile [Pathname] Path to Gemfile.lock @param dependencies [Array(Bundler::Dependency)] array of dependencies from Gemfile @param sources [Array(Bundler::Source::Rubygems)] @param unlock [Hash, Boolean, nil] Gems that have been requested

to be updated or true if all gems should be updated

@param #ruby_version [Bundler::RubyVersion, nil] Requested Ruby Version

# File lib/bundler/definition.rb, line 47
def initialize(lockfile, dependencies, sources, unlock, ruby_version = nil)
  @unlocking = unlock == true || !unlock.empty?

  @dependencies, @sources, @unlock = dependencies, sources, unlock
  @remote            = false
  @specs             = nil
  @lockfile_contents = ""
  @ruby_version      = ruby_version

  if lockfile && File.exist?(lockfile)
    @lockfile_contents = Bundler.read_file(lockfile)
    locked = LockfileParser.new(@lockfile_contents)
    @platforms      = locked.platforms

    if unlock != true
      @locked_deps    = locked.dependencies
      @locked_specs   = SpecSet.new(locked.specs)
      @locked_sources = locked.sources
    else
      @unlock         = {}
      @locked_deps    = []
      @locked_specs   = SpecSet.new([])
      @locked_sources = []
    end
  else
    @unlock         = {}
    @platforms      = []
    @locked_deps    = []
    @locked_specs   = SpecSet.new([])
    @locked_sources = []
  end

  @unlock[:gems] ||= []
  @unlock[:sources] ||= []

  current_platform = Bundler.rubygems.platforms.map { |p| generic(p) }.compact.last
  @new_platform = !@platforms.include?(current_platform)
  @platforms |= [current_platform]

  @path_changes = converge_paths
  eager_unlock = expand_dependencies(@unlock[:gems])
  @unlock[:gems] = @locked_specs.for(eager_unlock).map { |s| s.name }

  @source_changes = converge_sources
  @dependency_changes = converge_dependencies
  @local_changes = converge_locals

  fixup_dependency_types!
end

Public Instance Methods

current_dependencies() click to toggle source
# File lib/bundler/definition.rb, line 171
def current_dependencies
  dependencies.reject { |d| !d.should_include? }
end
ensure_equivalent_gemfile_and_lockfile(explicit_flag = false) click to toggle source
# File lib/bundler/definition.rb, line 306
def ensure_equivalent_gemfile_and_lockfile(explicit_flag = false)
  changes = false

  msg = "You are trying to install in deployment mode after changing\n"              "your Gemfile. Run `bundle install` elsewhere and add the\n"              "updated Gemfile.lock to version control."

  unless explicit_flag
    msg += "\n\nIf this is a development machine, remove the Gemfile "                 "freeze \nby running `bundle install --no-deployment`."
  end

  added =   []
  deleted = []
  changed = []

  if @locked_sources != @sources
    new_sources = @sources - @locked_sources
    deleted_sources = @locked_sources - @sources

    if new_sources.any?
      added.concat new_sources.map { |source| "* source: #{source}" }
    end

    if deleted_sources.any?
      deleted.concat deleted_sources.map { |source| "* source: #{source}" }
    end

    changes = true
  end

  both_sources = Hash.new { |h,k| h[k] = ["no specified source", "no specified source"] }
  @dependencies.each { |d| both_sources[d.name][0] = d.source if d.source }
  @locked_deps.each  { |d| both_sources[d.name][1] = d.source if d.source }
  both_sources.delete_if { |k,v| v[0] == v[1] }

  if @dependencies != @locked_deps
    new_deps = @dependencies - @locked_deps
    deleted_deps = @locked_deps - @dependencies

    if new_deps.any?
      added.concat new_deps.map { |d| "* #{pretty_dep(d)}" }
    end

    if deleted_deps.any?
      deleted.concat deleted_deps.map { |d| "* #{pretty_dep(d)}" }
    end

    both_sources.each do |name, sources|
      changed << "* #{name} from `#{sources[0]}` to `#{sources[1]}`"
    end

    changes = true
  end

  msg << "\n\nYou have added to the Gemfile:\n"     << added.join("\n") if added.any?
  msg << "\n\nYou have deleted from the Gemfile:\n" << deleted.join("\n") if deleted.any?
  msg << "\n\nYou have changed in the Gemfile:\n"   << changed.join("\n") if changed.any?
  msg << "\n"

  raise ProductionError, msg if added.any? || deleted.any? || changed.any?
end
fixup_dependency_types!() click to toggle source
# File lib/bundler/definition.rb, line 97
def fixup_dependency_types!
  # XXX This is a temporary workaround for a bug when using rubygems 1.8.15
  # where Gem::Dependency#== matches Gem::Dependency#type. As the lockfile
  # doesn't carry a notion of the dependency type, if you use
  # add_development_dependency in a gemspec that's loaded with the gemspec
  # directive, the lockfile dependencies and resolved dependencies end up
  # with a mismatch on #type.
  # Test coverage to catch a regression on this is in gemspec_spec.rb
  @dependencies.each do |d|
    if ld = @locked_deps.find { |l| l.name == d.name }
      ld.instance_variable_set(:@type, d.type)
    end
  end
end
groups() click to toggle source
# File lib/bundler/definition.rb, line 239
def groups
  dependencies.map { |d| d.groups }.flatten.uniq
end
index() click to toggle source
# File lib/bundler/definition.rb, line 208
def index
  @index ||= Index.build do |idx|
    dependency_names = @dependencies.dup || []
    dependency_names.map! {|d| d.name }

    @sources.each do |s|
      if s.is_a?(Bundler::Source::Rubygems)
        s.dependency_names = dependency_names.uniq
        idx.add_source s.specs
      else
        source_index = s.specs
        dependency_names += source_index.unmet_dependency_names
        idx.add_source source_index
      end
    end
  end
end
lock(file) click to toggle source
# File lib/bundler/definition.rb, line 243
def lock(file)
  contents = to_lock

  # Convert to \r\n if the existing lock has them
  # i.e., Windows with `git config core.autocrlf=true`
  contents.gsub!(/\n/, "\r\n") if @lockfile_contents.match("\r\n")

  return if @lockfile_contents == contents

  if Bundler.settings[:frozen]
    Bundler.ui.error "Cannot write a changed lockfile while frozen."
    return
  end

  File.open(file, 'wb'){|f| f.puts(contents) }
rescue Errno::EACCES
  raise Bundler::InstallError,
    "There was an error while trying to write to Gemfile.lock. It is likely that \n"          "you need to allow write permissions for the file at path: \n"          "#{File.expand_path(file)}"
end
missing_specs() click to toggle source
# File lib/bundler/definition.rb, line 157
def missing_specs
  missing = []
  resolve.materialize(requested_dependencies, missing)
  missing
end
new_platform?() click to toggle source
# File lib/bundler/definition.rb, line 153
def new_platform?
  @new_platform
end
new_specs() click to toggle source
# File lib/bundler/definition.rb, line 145
def new_specs
  specs - @locked_specs
end
removed_specs() click to toggle source
# File lib/bundler/definition.rb, line 149
def removed_specs
  @locked_specs - specs
end
requested_specs() click to toggle source
# File lib/bundler/definition.rb, line 163
def requested_specs
  @requested_specs ||= begin
    groups = self.groups - Bundler.settings.without
    groups.map! { |g| g.to_sym }
    specs_for(groups)
  end
end
resolve() click to toggle source

Resolve all the dependencies specified in Gemfile. It ensures that dependencies that have been already resolved via locked file and are fresh are reused when resolving dependencies

@return [SpecSet] resolved dependencies

# File lib/bundler/definition.rb, line 186
def resolve
  @resolve ||= begin
    if Bundler.settings[:frozen] || (!@unlocking && nothing_changed?)
      @locked_specs
    else
      last_resolve = converge_locked_specs

      # Record the specs available in each gem's source, so that those
      # specs will be available later when the resolver knows where to
      # look for that gemspec (or its dependencies)
      source_requirements = {}
      dependencies.each do |dep|
        next unless dep.source
        source_requirements[dep.name] = dep.source.specs
      end

      # Run a resolve against the locally available gems
      last_resolve.merge Resolver.resolve(expanded_dependencies, index, source_requirements, last_resolve)
    end
  end
end
resolve_remotely!() click to toggle source
# File lib/bundler/definition.rb, line 118
def resolve_remotely!
  raise "Specs already loaded" if @specs
  @remote = true
  @sources.each { |s| s.remote! }
  specs
end
resolve_with_cache!() click to toggle source
# File lib/bundler/definition.rb, line 112
def resolve_with_cache!
  raise "Specs already loaded" if @specs
  @sources.each { |s| s.cached! }
  specs
end
rubygems_index() click to toggle source

used when frozen is enabled so we can find the bundler spec, even if (say) a git gem is not checked out.

# File lib/bundler/definition.rb, line 228
def rubygems_index
  @rubygems_index ||= Index.build do |idx|
    rubygems = @sources.find{|s| s.is_a?(Source::Rubygems) }
    idx.add_source rubygems.specs
  end
end
rubygems_remotes() click to toggle source
# File lib/bundler/definition.rb, line 235
def rubygems_remotes
  @sources.select{|s| s.is_a?(Source::Rubygems) }.map{|s| s.remotes }.flatten
end
specs() click to toggle source

For given dependency list returns a SpecSet with Gemspec of all the required dependencies.

1. The method first resolves the dependencies specified in Gemfile
2. After that it tries and fetches gemspec of resolved dependencies

@return [Bundler::SpecSet]

# File lib/bundler/definition.rb, line 131
def specs
  @specs ||= begin
    specs = resolve.materialize(requested_dependencies)

    unless specs["bundler"].any?
      local = Bundler.settings[:frozen] ? rubygems_index : index
      bundler = local.search(Gem::Dependency.new('bundler', VERSION)).last
      specs["bundler"] = bundler if bundler
    end

    specs
  end
end
specs_for(groups) click to toggle source
# File lib/bundler/definition.rb, line 175
def specs_for(groups)
  deps = dependencies.select { |d| (d.groups & groups).any? }
  deps.delete_if { |d| !d.should_include? }
  specs.for(expand_dependencies(deps))
end
to_lock() click to toggle source
# File lib/bundler/definition.rb, line 265
def to_lock
  out = ""

  sorted_sources.each do |source|
    # Add the source header
    out << source.to_lock
    # Find all specs for this source
    resolve.
      select  { |s| s.source == source }.
      # This needs to be sorted by full name so that
      # gems with the same name, but different platform
      # are ordered consistently
      sort_by { |s| s.full_name }.
      each do |spec|
        next if spec.name == 'bundler'
        out << spec.to_lock
    end
    out << "\n"
  end

  out << "PLATFORMS\n"

  platforms.map { |p| p.to_s }.sort.each do |p|
    out << "  #{p}\n"
  end

  out << "\n"
  out << "DEPENDENCIES\n"

  handled = []
  dependencies.
    sort_by { |d| d.to_s }.
    each do |dep|
      next if handled.include?(dep.name)
      out << dep.to_lock
      handled << dep.name
  end

  out
end
validate_ruby!() click to toggle source
# File lib/bundler/definition.rb, line 369
def validate_ruby!
  return unless ruby_version

  if diff = ruby_version.diff(Bundler.ruby_version)
    problem, expected, actual = diff

    msg = case problem
    when :engine
      "Your Ruby engine is #{actual}, but your Gemfile specified #{expected}"
    when :version
      "Your Ruby version is #{actual}, but your Gemfile specified #{expected}"
    when :engine_version
      "Your #{Bundler.ruby_version.engine} version is #{actual}, but your Gemfile specified #{ruby_version.engine} #{expected}"
    when :patchlevel
      if !expected.is_a?(String)
        "The Ruby patchlevel in your Gemfile must be a string"
      else
        "Your Ruby patchlevel is #{actual}, but your Gemfile specified #{expected}"
      end
    end

    raise RubyVersionMismatch, msg
  end
end