Class: Bundler::Definition

Inherits:
Object
  • Object
show all
Includes:
GemHelpers
Defined in:
lib/bundler/definition.rb

Constant Summary

Constants included from GemHelpers

GemHelpers::GENERICS, GemHelpers::GENERIC_CACHE

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from GemHelpers

generic, generic_local_platform

Constructor Details

#initialize(lockfile, dependencies, sources, unlock, ruby_version = nil, optional_groups = []) ⇒ Definition

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.


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# File 'lib/bundler/definition.rb', line 46

def initialize(lockfile, dependencies, sources, unlock, ruby_version = nil, optional_groups = [])
  @unlocking = unlock == true || !unlock.empty?

  @dependencies    = dependencies
  @sources         = sources
  @unlock          = unlock
  @optional_groups = optional_groups
  @remote          = false
  @specs           = nil
  @ruby_version    = ruby_version

  @lockfile_contents      = String.new
  @locked_bundler_version = nil
  @locked_ruby_version    = nil

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

    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(&:name)

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

  fixup_dependency_types!
end

Instance Attribute Details

#dependenciesObject (readonly)

Returns the value of attribute dependencies



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# File 'lib/bundler/definition.rb', line 10

def dependencies
  @dependencies
end

#locked_depsObject (readonly)

Returns the value of attribute locked_deps



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# File 'lib/bundler/definition.rb', line 10

def locked_deps
  @locked_deps
end

#platformsObject (readonly)

Returns the value of attribute platforms



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# File 'lib/bundler/definition.rb', line 10

def platforms
  @platforms
end

#ruby_versionObject (readonly)

Returns the value of attribute ruby_version



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# File 'lib/bundler/definition.rb', line 10

def ruby_version
  @ruby_version
end

Class Method Details

.build(gemfile, lockfile, unlock) ⇒ Bundler::Definition

Given a gemfile and lockfile creates a Bundler definition

Raises:



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# File 'lib/bundler/definition.rb', line 19

def self.build(gemfile, lockfile, unlock)
  unlock ||= {}
  gemfile = Pathname.new(gemfile).expand_path

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

  Dsl.evaluate(gemfile, lockfile, unlock)
end

Instance Method Details

#current_dependenciesObject



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# File 'lib/bundler/definition.rb', line 178

def current_dependencies
  dependencies.reject {|d| !d.should_include? }
end

#ensure_equivalent_gemfile_and_lockfile(explicit_flag = false) ⇒ Object

Raises:



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# File 'lib/bundler/definition.rb', line 339

def ensure_equivalent_gemfile_and_lockfile(explicit_flag = false)
  msg = String.new
  msg << "You are trying to install in deployment mode after changing\n" \
         "your Gemfile. Run `bundle install` elsewhere and add the\n" \
         "updated #{Bundler.default_lockfile.relative_path_from(SharedHelpers.pwd)} to version control."

  unless explicit_flag
    msg << "\n\nIf this is a development machine, remove the #{Bundler.default_gemfile} " \
           "freeze \nby running `bundle install --no-deployment`."
  end

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

  gemfile_sources = sources.lock_sources
  if @locked_sources != gemfile_sources
    new_sources = gemfile_sources - @locked_sources
    deleted_sources = @locked_sources - gemfile_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
  end

  new_deps = @dependencies - @locked_deps
  deleted_deps = @locked_deps - @dependencies

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

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

  both_sources = Hash.new {|h, k| h[k] = [] }
  @dependencies.each {|d| both_sources[d.name][0] = d }
  @locked_deps.each  {|d| both_sources[d.name][1] = d.source }

  both_sources.each do |name, (dep, lock_source)|
    next unless (dep.nil? && !lock_source.nil?) || (!dep.nil? && !lock_source.nil? && !lock_source.can_lock?(dep))
    gemfile_source_name = (dep && dep.source) || "no specified source"
    lockfile_source_name = lock_source || "no specified source"
    changed << "* #{name} from `#{gemfile_source_name}` to `#{lockfile_source_name}`"
  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!Object



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# File 'lib/bundler/definition.rb', line 104

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

#groupsObject



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# File 'lib/bundler/definition.rb', line 240

def groups
  dependencies.map(&:groups).flatten.uniq
end

#has_local_dependencies?Boolean



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# File 'lib/bundler/definition.rb', line 232

def has_local_dependencies?
  !sources.path_sources.empty? || !sources.git_sources.empty?
end

#has_rubygems_remotes?Boolean



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# File 'lib/bundler/definition.rb', line 228

def has_rubygems_remotes?
  sources.rubygems_sources.any? {|s| s.remotes.any? }
end

#indexObject



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# File 'lib/bundler/definition.rb', line 205

def index
  @index ||= Index.build do |idx|
    dependency_names = @dependencies.map(&:name)

    sources.all_sources.each do |source|
      source.dependency_names = dependency_names.dup
      idx.add_source source.specs
      dependency_names -= pinned_spec_names(source.specs)
      dependency_names.push(*source.unmet_deps).uniq!
    end
  end
end

#lock(file, preserve_unknown_sections = false) ⇒ Object



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# File 'lib/bundler/definition.rb', line 244

def lock(file, preserve_unknown_sections = false)
  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")

  if @locked_bundler_version
    locked_major = @locked_bundler_version.segments.first
    current_major = Gem::Version.create(Bundler::VERSION).segments.first

    if updating_major = locked_major < current_major
      Bundler.ui.warn "Warning: the lockfile is being updated to Bundler #{current_major}, " \
                      "after which you will be unable to return to Bundler #{@locked_bundler_version.segments.first}."
    end
  end

  preserve_unknown_sections ||= !updating_major && (Bundler.settings[:frozen] || !@unlocking)
  return if lockfiles_equal?(@lockfile_contents, contents, preserve_unknown_sections)

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

  SharedHelpers.filesystem_access(file) do |p|
    File.open(p, "wb") {|f| f.puts(contents) }
  end
end

#locked_bundler_versionObject



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# File 'lib/bundler/definition.rb', line 274

def locked_bundler_version
  if @locked_bundler_version && @locked_bundler_version < Gem::Version.new(Bundler::VERSION)
    new_version = Bundler::VERSION
  end

  new_version || @locked_bundler_version || Bundler::VERSION
end

#locked_ruby_versionObject



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# File 'lib/bundler/definition.rb', line 282

def locked_ruby_version
  return unless ruby_version
  if @unlock[:ruby] || !@locked_ruby_version
    Bundler::RubyVersion.system
  else
    @locked_ruby_version
  end
end

#missing_specsObject



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# File 'lib/bundler/definition.rb', line 164

def missing_specs
  missing = []
  resolve.materialize(requested_dependencies, missing)
  missing
end

#new_platform?Boolean



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# File 'lib/bundler/definition.rb', line 160

def new_platform?
  @new_platform
end

#new_specsObject



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# File 'lib/bundler/definition.rb', line 152

def new_specs
  specs - @locked_specs
end

#removed_specsObject



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# File 'lib/bundler/definition.rb', line 156

def removed_specs
  @locked_specs - specs
end

#requested_specsObject



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# File 'lib/bundler/definition.rb', line 170

def requested_specs
  @requested_specs ||= begin
    groups = requested_groups
    groups.map!(&:to_sym)
    specs_for(groups)
  end
end

#resolveSpecSet

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



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# File 'lib/bundler/definition.rb', line 193

def resolve
  @resolve ||= begin
    last_resolve = converge_locked_specs
    if Bundler.settings[:frozen] || (!@unlocking && nothing_changed?)
      last_resolve
    else
      # Run a resolve against the locally available gems
      last_resolve.merge Resolver.resolve(expanded_dependencies, index, source_requirements, last_resolve, ruby_version)
    end
  end
end

#resolve_remotely!Object



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# File 'lib/bundler/definition.rb', line 125

def resolve_remotely!
  raise "Specs already loaded" if @specs
  @remote = true
  sources.remote!
  specs
end

#resolve_with_cache!Object



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# File 'lib/bundler/definition.rb', line 119

def resolve_with_cache!
  raise "Specs already loaded" if @specs
  sources.cached!
  specs
end

#rubygems_indexObject

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



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# File 'lib/bundler/definition.rb', line 220

def rubygems_index
  @rubygems_index ||= Index.build do |idx|
    sources.rubygems_sources.each do |rubygems|
      idx.add_source rubygems.specs
    end
  end
end

#spec_git_pathsObject



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# File 'lib/bundler/definition.rb', line 236

def spec_git_paths
  sources.git_sources.map {|s| s.path.to_s }
end

#specsBundler::SpecSet

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


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# File 'lib/bundler/definition.rb', line 138

def specs
  @specs ||= begin
    specs = resolve.materialize(Bundler.settings[:cache_all_platforms] ? dependencies : 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) ⇒ Object



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# File 'lib/bundler/definition.rb', line 182

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_lockObject



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# File 'lib/bundler/definition.rb', line 291

def to_lock
  out = String.new

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

  out << "PLATFORMS\n"

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

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

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

  if locked_ruby_version
    out << "\nRUBY VERSION\n"
    out << "   #{locked_ruby_version}\n"
  end

  # Record the version of Bundler that was used to create the lockfile
  out << "\nBUNDLED WITH\n"
  out << "   #{locked_bundler_version}\n"

  out
end

#validate_ruby!Object



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# File 'lib/bundler/definition.rb', line 396

def validate_ruby!
  return unless ruby_version

  if diff = ruby_version.diff(Bundler::RubyVersion.system)
    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::RubyVersion.system.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