Class: Bundler::Definition

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

Constant Summary

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

Constructor Details

- (Definition) initialize(lockfile, dependencies, sources, unlock, ruby_version = nil)

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 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

Instance Attribute Details

- (Object) dependencies (readonly)

Returns the value of attribute dependencies



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# File 'lib/bundler/definition.rb', line 8

def dependencies
  @dependencies
end

- (Object) locked_deps (readonly)

Returns the value of attribute locked_deps



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# File 'lib/bundler/definition.rb', line 8

def locked_deps
  @locked_deps
end

- (Object) platforms (readonly)

Returns the value of attribute platforms



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# File 'lib/bundler/definition.rb', line 8

def platforms
  @platforms
end

- (Object) ruby_version (readonly)

Returns the value of attribute ruby_version



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# File 'lib/bundler/definition.rb', line 8

def ruby_version
  @ruby_version
end

- (Object) sources (readonly)

Returns the value of attribute sources



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# File 'lib/bundler/definition.rb', line 8

def sources
  @sources
end

Class Method Details

+ (Bundler::Definition) build(gemfile, lockfile, unlock)

Given a gemfile and lockfile creates a Bundler definition



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# 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

Instance Method Details

- (Object) current_dependencies



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# File 'lib/bundler/definition.rb', line 171

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

- (Object) ensure_equivalent_gemfile_and_lockfile(explicit_flag = false)

Raises:



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# 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

- (Object) fixup_dependency_types!



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# 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

- (Object) groups



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# File 'lib/bundler/definition.rb', line 239

def groups
  dependencies.map { |d| d.groups }.flatten.uniq
end

- (Object) index



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# 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

- (Object) lock(file)



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# 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

- (Object) missing_specs



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# File 'lib/bundler/definition.rb', line 157

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

- (Boolean) new_platform?



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# File 'lib/bundler/definition.rb', line 153

def new_platform?
  @new_platform
end

- (Object) new_specs



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# File 'lib/bundler/definition.rb', line 145

def new_specs
  specs - @locked_specs
end

- (Object) removed_specs



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# File 'lib/bundler/definition.rb', line 149

def removed_specs
  @locked_specs - specs
end

- (Object) requested_specs



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# 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

- (SpecSet) resolve

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 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

- (Object) resolve_remotely!



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# 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

- (Object) resolve_with_cache!



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# File 'lib/bundler/definition.rb', line 112

def resolve_with_cache!
  raise "Specs already loaded" if @specs
  @sources.each { |s| s.cached! }
  specs
end

- (Object) rubygems_index

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 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

- (Object) rubygems_remotes



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# File 'lib/bundler/definition.rb', line 235

def rubygems_remotes
  @sources.select{|s| s.is_a?(Source::Rubygems) }.map{|s| s.remotes }.flatten
end

- (Bundler::SpecSet) specs

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 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

- (Object) specs_for(groups)



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# 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

- (Object) to_lock



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# 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

- (Object) validate_ruby!



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# 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