Module: Bundler::Plugin::API::Source

Defined in:
lib/bundler/plugin/api/source.rb

Overview

This class provides the base to build source plugins All the method here are required to build a source plugin (except `uri_hash`, `gem_install_dir`; they are helpers).

Defaults for methods, where ever possible are provided which is expected to work. But, all source plugins have to override `fetch_gemspec_files` and `install`. Defaults are also not provided for `remote!`, `cache!` and `unlock!`.

The defaults shall work for most situations but nevertheless they can be (preferably should be) overridden as per the plugins' needs safely (as long as they behave as expected). On overriding `initialize` you should call super first.

If required plugin should override `hash`, `==` and `eql?` methods to be able to match objects representing same sources, but may be created in different situation (like form gemfile and lockfile). The default ones checks only for class and uri, but elaborate source plugins may need more comparisons (e.g. git checking on branch or tag).

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#dependency_namesArray<String>

Returns Names of dependencies that the source should try to resolve. It is not necessary to use this list intenally. This is present to be compatible with `Definition` and is used by rubygems source.

Returns:

  • (Array<String>)

    Names of dependencies that the source should try to resolve. It is not necessary to use this list intenally. This is present to be compatible with `Definition` and is used by rubygems source.



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# File 'lib/bundler/plugin/api/source.rb', line 43

module Source
  attr_reader :uri, :options, :name
  attr_accessor :dependency_names

  def initialize(opts)
    @options = opts
    @dependency_names = []
    @uri = opts["uri"]
    @type = opts["type"]
    @name = opts["name"] || "#{@type} at #{@uri}"
  end

  # This is used by the default `spec` method to constructs the
  # Specification objects for the gems and versions that can be installed
  # by this source plugin.
  #
  # Note: If the spec method is overridden, this function is not necessary
  #
  # @return [Array<String>] paths of the gemspec files for gems that can
  #                         be installed
  def fetch_gemspec_files
    []
  end

  # Options to be saved in the lockfile so that the source plugin is able
  # to check out same version of gem later.
  #
  # There options are passed when the source plugin is created from the
  # lock file.
  #
  # @return [Hash]
  def options_to_lock
    {}
  end

  # Install the gem specified by the spec at appropriate path.
  # `install_path` provides a sufficient default, if the source can only
  # satisfy one gem,  but is not binding.
  #
  # @return [String] post installation message (if any)
  def install(spec, opts)
    raise MalformattedPlugin, "Source plugins need to override the install method."
  end

  # It builds extensions, generates bins and installs them for the spec
  # provided.
  #
  # It depends on `spec.loaded_from` to get full_gem_path. The source
  # plugins should set that.
  #
  # It should be called in `install` after the plugin is done placing the
  # gem at correct install location.
  #
  # It also runs Gem hooks `pre_install`, `post_build` and `post_install`
  #
  # Note: Do not override if you don't know what you are doing.
  def post_install(spec, disable_exts = false)
    opts = { :env_shebang => false, :disable_extensions => disable_exts }
    installer = Bundler::Source::Path::Installer.new(spec, opts)
    installer.post_install
  end

  # A default installation path to install a single gem. If the source
  # servers multiple gems, it's not of much use and the source should one
  # of its own.
  def install_path
    @install_path ||=
      begin
        base_name = File.basename(URI.parse(uri).normalize.path)

        gem_install_dir.join("#{base_name}-#{uri_hash[0..11]}")
      end
  end

  # Parses the gemspec files to find the specs for the gems that can be
  # satisfied by the source.
  #
  # Few important points to keep in mind:
  #   - If the gems are not installed then it shall return specs for all
  #   the gems it can satisfy
  #   - If gem is installed (that is to be detected by the plugin itself)
  #   then it shall return at least the specs that are installed.
  #   - The `loaded_from` for each of the specs shall be correct (it is
  #   used to find the load path)
  #
  # @return [Bundler::Index] index containing the specs
  def specs
    files = fetch_gemspec_files

    Bundler::Index.build do |index|
      files.each do |file|
        next unless spec = Bundler.load_gemspec(file)
        Bundler.rubygems.set_installed_by_version(spec)

        spec.source = self
        Bundler.rubygems.validate(spec)

        index << spec
      end
    end
  end

  # Set internal representation to fetch the gems/specs from remote.
  #
  # When this is called, the source should try to fetch the specs and
  # install from remote path.
  def remote!
  end

  # Set internal representation to fetch the gems/specs from app cache.
  #
  # When this is called, the source should try to fetch the specs and
  # install from the path provided by `app_cache_path`.
  def cached!
  end

  # This is called to update the spec and installation.
  #
  # If the source plugin is loaded from lockfile or otherwise, it shall
  # refresh the cache/specs (e.g. git sources can make a fresh clone).
  def unlock!
  end

  # Name of directory where plugin the is expected to cache the gems when
  # #cache is called.
  #
  # Also this name is matched against the directories in cache for pruning
  #
  # This is used by `app_cache_path`
  def app_cache_dirname
    base_name = File.basename(URI.parse(uri).normalize.path)
    "#{base_name}-#{uri_hash}"
  end

  # This method is called while caching to save copy of the gems that the
  # source can resolve to path provided by `app_cache_app`so that they can
  # be reinstalled from the cache without querying the remote (i.e. an
  # alternative to remote)
  #
  # This is stored with the app and source plugins should try to provide
  # specs and install only from this cache when `cached!` is called.
  #
  # This cache is different from the internal caching that can be done
  # at sub paths of `cache_path` (from API). This can be though as caching
  # by bundler.
  def cache(spec, custom_path = nil)
    new_cache_path = app_cache_path(custom_path)

    FileUtils.rm_rf(new_cache_path)
    FileUtils.cp_r(install_path, new_cache_path)
    FileUtils.touch(app_cache_path.join(".bundlecache"))
  end

  # This shall check if two source object represent the same source.
  #
  # The comparison shall take place only on the attribute that can be
  # inferred from the options passed from Gemfile and not on attibutes
  # that are used to pin down the gem to specific version (e.g. Git
  # sources should compare on branch and tag but not on commit hash)
  #
  # The sources objects are constructed from Gemfile as well as from
  # lockfile. To converge the sources, it is necessary that they match.
  #
  # The same applies for `eql?` and `hash`
  def ==(other)
    other.is_a?(self.class) && uri == other.uri
  end

  # When overriding `eql?` please preserve the behaviour as mentioned in
  # docstring for `==` method.
  alias_method :eql?, :==

  # When overriding `hash` please preserve the behaviour as mentioned in
  # docstring for `==` method, i.e. two methods equal by above comparison
  # should have same hash.
  def hash
    [self.class, uri].hash
  end

  # A helper method, not necessary if not used internally.
  def installed?
    File.directory?(install_path)
  end

  # The full path where the plugin should cache the gem so that it can be
  # installed latter.
  #
  # Note: Do not override if you don't know what you are doing.
  def app_cache_path(custom_path = nil)
    @app_cache_path ||= Bundler.app_cache(custom_path).join(app_cache_dirname)
  end

  # Used by definition.
  #
  # Note: Do not override if you don't know what you are doing.
  def unmet_deps
    specs.unmet_dependency_names
  end

  # Note: Do not override if you don't know what you are doing.
  def can_lock?(spec)
    spec.source == self
  end

  # Generates the content to be entered into the lockfile.
  # Saves type and remote and also calls to `options_to_lock`.
  #
  # Plugin should use `options_to_lock` to save information in lockfile
  # and not override this.
  #
  # Note: Do not override if you don't know what you are doing.
  def to_lock
    out = String.new("#{LockfileParser::PLUGIN}\n")
    out << "  remote: #{@uri}\n"
    out << "  type: #{@type}\n"
    options_to_lock.each do |opt, value|
      out << "  #{opt}: #{value}\n"
    end
    out << "  specs:\n"
  end

  def to_s
    "plugin source for #{options[:type]} with uri #{uri}"
  end

  # Note: Do not override if you don't know what you are doing.
  def include?(other)
    other == self
  end

  def uri_hash
    Digest::SHA1.hexdigest(uri)
  end

  # Note: Do not override if you don't know what you are doing.
  def gem_install_dir
    Bundler.install_path
  end

  # It is used to obtain the full_gem_path.
  #
  # spec's loaded_from path is expanded against this to get full_gem_path
  #
  # Note: Do not override if you don't know what you are doing.
  def root
    Bundler.root
  end

  # @private
  # Returns true
  def bundler_plugin_api_source?
    true
  end
end

#nameString (readonly)

Returns name that can be used to uniquely identify a source

Returns:

  • (String)

    name that can be used to uniquely identify a source



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# File 'lib/bundler/plugin/api/source.rb', line 43

module Source
  attr_reader :uri, :options, :name
  attr_accessor :dependency_names

  def initialize(opts)
    @options = opts
    @dependency_names = []
    @uri = opts["uri"]
    @type = opts["type"]
    @name = opts["name"] || "#{@type} at #{@uri}"
  end

  # This is used by the default `spec` method to constructs the
  # Specification objects for the gems and versions that can be installed
  # by this source plugin.
  #
  # Note: If the spec method is overridden, this function is not necessary
  #
  # @return [Array<String>] paths of the gemspec files for gems that can
  #                         be installed
  def fetch_gemspec_files
    []
  end

  # Options to be saved in the lockfile so that the source plugin is able
  # to check out same version of gem later.
  #
  # There options are passed when the source plugin is created from the
  # lock file.
  #
  # @return [Hash]
  def options_to_lock
    {}
  end

  # Install the gem specified by the spec at appropriate path.
  # `install_path` provides a sufficient default, if the source can only
  # satisfy one gem,  but is not binding.
  #
  # @return [String] post installation message (if any)
  def install(spec, opts)
    raise MalformattedPlugin, "Source plugins need to override the install method."
  end

  # It builds extensions, generates bins and installs them for the spec
  # provided.
  #
  # It depends on `spec.loaded_from` to get full_gem_path. The source
  # plugins should set that.
  #
  # It should be called in `install` after the plugin is done placing the
  # gem at correct install location.
  #
  # It also runs Gem hooks `pre_install`, `post_build` and `post_install`
  #
  # Note: Do not override if you don't know what you are doing.
  def post_install(spec, disable_exts = false)
    opts = { :env_shebang => false, :disable_extensions => disable_exts }
    installer = Bundler::Source::Path::Installer.new(spec, opts)
    installer.post_install
  end

  # A default installation path to install a single gem. If the source
  # servers multiple gems, it's not of much use and the source should one
  # of its own.
  def install_path
    @install_path ||=
      begin
        base_name = File.basename(URI.parse(uri).normalize.path)

        gem_install_dir.join("#{base_name}-#{uri_hash[0..11]}")
      end
  end

  # Parses the gemspec files to find the specs for the gems that can be
  # satisfied by the source.
  #
  # Few important points to keep in mind:
  #   - If the gems are not installed then it shall return specs for all
  #   the gems it can satisfy
  #   - If gem is installed (that is to be detected by the plugin itself)
  #   then it shall return at least the specs that are installed.
  #   - The `loaded_from` for each of the specs shall be correct (it is
  #   used to find the load path)
  #
  # @return [Bundler::Index] index containing the specs
  def specs
    files = fetch_gemspec_files

    Bundler::Index.build do |index|
      files.each do |file|
        next unless spec = Bundler.load_gemspec(file)
        Bundler.rubygems.set_installed_by_version(spec)

        spec.source = self
        Bundler.rubygems.validate(spec)

        index << spec
      end
    end
  end

  # Set internal representation to fetch the gems/specs from remote.
  #
  # When this is called, the source should try to fetch the specs and
  # install from remote path.
  def remote!
  end

  # Set internal representation to fetch the gems/specs from app cache.
  #
  # When this is called, the source should try to fetch the specs and
  # install from the path provided by `app_cache_path`.
  def cached!
  end

  # This is called to update the spec and installation.
  #
  # If the source plugin is loaded from lockfile or otherwise, it shall
  # refresh the cache/specs (e.g. git sources can make a fresh clone).
  def unlock!
  end

  # Name of directory where plugin the is expected to cache the gems when
  # #cache is called.
  #
  # Also this name is matched against the directories in cache for pruning
  #
  # This is used by `app_cache_path`
  def app_cache_dirname
    base_name = File.basename(URI.parse(uri).normalize.path)
    "#{base_name}-#{uri_hash}"
  end

  # This method is called while caching to save copy of the gems that the
  # source can resolve to path provided by `app_cache_app`so that they can
  # be reinstalled from the cache without querying the remote (i.e. an
  # alternative to remote)
  #
  # This is stored with the app and source plugins should try to provide
  # specs and install only from this cache when `cached!` is called.
  #
  # This cache is different from the internal caching that can be done
  # at sub paths of `cache_path` (from API). This can be though as caching
  # by bundler.
  def cache(spec, custom_path = nil)
    new_cache_path = app_cache_path(custom_path)

    FileUtils.rm_rf(new_cache_path)
    FileUtils.cp_r(install_path, new_cache_path)
    FileUtils.touch(app_cache_path.join(".bundlecache"))
  end

  # This shall check if two source object represent the same source.
  #
  # The comparison shall take place only on the attribute that can be
  # inferred from the options passed from Gemfile and not on attibutes
  # that are used to pin down the gem to specific version (e.g. Git
  # sources should compare on branch and tag but not on commit hash)
  #
  # The sources objects are constructed from Gemfile as well as from
  # lockfile. To converge the sources, it is necessary that they match.
  #
  # The same applies for `eql?` and `hash`
  def ==(other)
    other.is_a?(self.class) && uri == other.uri
  end

  # When overriding `eql?` please preserve the behaviour as mentioned in
  # docstring for `==` method.
  alias_method :eql?, :==

  # When overriding `hash` please preserve the behaviour as mentioned in
  # docstring for `==` method, i.e. two methods equal by above comparison
  # should have same hash.
  def hash
    [self.class, uri].hash
  end

  # A helper method, not necessary if not used internally.
  def installed?
    File.directory?(install_path)
  end

  # The full path where the plugin should cache the gem so that it can be
  # installed latter.
  #
  # Note: Do not override if you don't know what you are doing.
  def app_cache_path(custom_path = nil)
    @app_cache_path ||= Bundler.app_cache(custom_path).join(app_cache_dirname)
  end

  # Used by definition.
  #
  # Note: Do not override if you don't know what you are doing.
  def unmet_deps
    specs.unmet_dependency_names
  end

  # Note: Do not override if you don't know what you are doing.
  def can_lock?(spec)
    spec.source == self
  end

  # Generates the content to be entered into the lockfile.
  # Saves type and remote and also calls to `options_to_lock`.
  #
  # Plugin should use `options_to_lock` to save information in lockfile
  # and not override this.
  #
  # Note: Do not override if you don't know what you are doing.
  def to_lock
    out = String.new("#{LockfileParser::PLUGIN}\n")
    out << "  remote: #{@uri}\n"
    out << "  type: #{@type}\n"
    options_to_lock.each do |opt, value|
      out << "  #{opt}: #{value}\n"
    end
    out << "  specs:\n"
  end

  def to_s
    "plugin source for #{options[:type]} with uri #{uri}"
  end

  # Note: Do not override if you don't know what you are doing.
  def include?(other)
    other == self
  end

  def uri_hash
    Digest::SHA1.hexdigest(uri)
  end

  # Note: Do not override if you don't know what you are doing.
  def gem_install_dir
    Bundler.install_path
  end

  # It is used to obtain the full_gem_path.
  #
  # spec's loaded_from path is expanded against this to get full_gem_path
  #
  # Note: Do not override if you don't know what you are doing.
  def root
    Bundler.root
  end

  # @private
  # Returns true
  def bundler_plugin_api_source?
    true
  end
end

#optionsString (readonly)

Returns options passed during initialization (either from lockfile or Gemfile)

Returns:

  • (String)

    options passed during initialization (either from lockfile or Gemfile)



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# File 'lib/bundler/plugin/api/source.rb', line 43

module Source
  attr_reader :uri, :options, :name
  attr_accessor :dependency_names

  def initialize(opts)
    @options = opts
    @dependency_names = []
    @uri = opts["uri"]
    @type = opts["type"]
    @name = opts["name"] || "#{@type} at #{@uri}"
  end

  # This is used by the default `spec` method to constructs the
  # Specification objects for the gems and versions that can be installed
  # by this source plugin.
  #
  # Note: If the spec method is overridden, this function is not necessary
  #
  # @return [Array<String>] paths of the gemspec files for gems that can
  #                         be installed
  def fetch_gemspec_files
    []
  end

  # Options to be saved in the lockfile so that the source plugin is able
  # to check out same version of gem later.
  #
  # There options are passed when the source plugin is created from the
  # lock file.
  #
  # @return [Hash]
  def options_to_lock
    {}
  end

  # Install the gem specified by the spec at appropriate path.
  # `install_path` provides a sufficient default, if the source can only
  # satisfy one gem,  but is not binding.
  #
  # @return [String] post installation message (if any)
  def install(spec, opts)
    raise MalformattedPlugin, "Source plugins need to override the install method."
  end

  # It builds extensions, generates bins and installs them for the spec
  # provided.
  #
  # It depends on `spec.loaded_from` to get full_gem_path. The source
  # plugins should set that.
  #
  # It should be called in `install` after the plugin is done placing the
  # gem at correct install location.
  #
  # It also runs Gem hooks `pre_install`, `post_build` and `post_install`
  #
  # Note: Do not override if you don't know what you are doing.
  def post_install(spec, disable_exts = false)
    opts = { :env_shebang => false, :disable_extensions => disable_exts }
    installer = Bundler::Source::Path::Installer.new(spec, opts)
    installer.post_install
  end

  # A default installation path to install a single gem. If the source
  # servers multiple gems, it's not of much use and the source should one
  # of its own.
  def install_path
    @install_path ||=
      begin
        base_name = File.basename(URI.parse(uri).normalize.path)

        gem_install_dir.join("#{base_name}-#{uri_hash[0..11]}")
      end
  end

  # Parses the gemspec files to find the specs for the gems that can be
  # satisfied by the source.
  #
  # Few important points to keep in mind:
  #   - If the gems are not installed then it shall return specs for all
  #   the gems it can satisfy
  #   - If gem is installed (that is to be detected by the plugin itself)
  #   then it shall return at least the specs that are installed.
  #   - The `loaded_from` for each of the specs shall be correct (it is
  #   used to find the load path)
  #
  # @return [Bundler::Index] index containing the specs
  def specs
    files = fetch_gemspec_files

    Bundler::Index.build do |index|
      files.each do |file|
        next unless spec = Bundler.load_gemspec(file)
        Bundler.rubygems.set_installed_by_version(spec)

        spec.source = self
        Bundler.rubygems.validate(spec)

        index << spec
      end
    end
  end

  # Set internal representation to fetch the gems/specs from remote.
  #
  # When this is called, the source should try to fetch the specs and
  # install from remote path.
  def remote!
  end

  # Set internal representation to fetch the gems/specs from app cache.
  #
  # When this is called, the source should try to fetch the specs and
  # install from the path provided by `app_cache_path`.
  def cached!
  end

  # This is called to update the spec and installation.
  #
  # If the source plugin is loaded from lockfile or otherwise, it shall
  # refresh the cache/specs (e.g. git sources can make a fresh clone).
  def unlock!
  end

  # Name of directory where plugin the is expected to cache the gems when
  # #cache is called.
  #
  # Also this name is matched against the directories in cache for pruning
  #
  # This is used by `app_cache_path`
  def app_cache_dirname
    base_name = File.basename(URI.parse(uri).normalize.path)
    "#{base_name}-#{uri_hash}"
  end

  # This method is called while caching to save copy of the gems that the
  # source can resolve to path provided by `app_cache_app`so that they can
  # be reinstalled from the cache without querying the remote (i.e. an
  # alternative to remote)
  #
  # This is stored with the app and source plugins should try to provide
  # specs and install only from this cache when `cached!` is called.
  #
  # This cache is different from the internal caching that can be done
  # at sub paths of `cache_path` (from API). This can be though as caching
  # by bundler.
  def cache(spec, custom_path = nil)
    new_cache_path = app_cache_path(custom_path)

    FileUtils.rm_rf(new_cache_path)
    FileUtils.cp_r(install_path, new_cache_path)
    FileUtils.touch(app_cache_path.join(".bundlecache"))
  end

  # This shall check if two source object represent the same source.
  #
  # The comparison shall take place only on the attribute that can be
  # inferred from the options passed from Gemfile and not on attibutes
  # that are used to pin down the gem to specific version (e.g. Git
  # sources should compare on branch and tag but not on commit hash)
  #
  # The sources objects are constructed from Gemfile as well as from
  # lockfile. To converge the sources, it is necessary that they match.
  #
  # The same applies for `eql?` and `hash`
  def ==(other)
    other.is_a?(self.class) && uri == other.uri
  end

  # When overriding `eql?` please preserve the behaviour as mentioned in
  # docstring for `==` method.
  alias_method :eql?, :==

  # When overriding `hash` please preserve the behaviour as mentioned in
  # docstring for `==` method, i.e. two methods equal by above comparison
  # should have same hash.
  def hash
    [self.class, uri].hash
  end

  # A helper method, not necessary if not used internally.
  def installed?
    File.directory?(install_path)
  end

  # The full path where the plugin should cache the gem so that it can be
  # installed latter.
  #
  # Note: Do not override if you don't know what you are doing.
  def app_cache_path(custom_path = nil)
    @app_cache_path ||= Bundler.app_cache(custom_path).join(app_cache_dirname)
  end

  # Used by definition.
  #
  # Note: Do not override if you don't know what you are doing.
  def unmet_deps
    specs.unmet_dependency_names
  end

  # Note: Do not override if you don't know what you are doing.
  def can_lock?(spec)
    spec.source == self
  end

  # Generates the content to be entered into the lockfile.
  # Saves type and remote and also calls to `options_to_lock`.
  #
  # Plugin should use `options_to_lock` to save information in lockfile
  # and not override this.
  #
  # Note: Do not override if you don't know what you are doing.
  def to_lock
    out = String.new("#{LockfileParser::PLUGIN}\n")
    out << "  remote: #{@uri}\n"
    out << "  type: #{@type}\n"
    options_to_lock.each do |opt, value|
      out << "  #{opt}: #{value}\n"
    end
    out << "  specs:\n"
  end

  def to_s
    "plugin source for #{options[:type]} with uri #{uri}"
  end

  # Note: Do not override if you don't know what you are doing.
  def include?(other)
    other == self
  end

  def uri_hash
    Digest::SHA1.hexdigest(uri)
  end

  # Note: Do not override if you don't know what you are doing.
  def gem_install_dir
    Bundler.install_path
  end

  # It is used to obtain the full_gem_path.
  #
  # spec's loaded_from path is expanded against this to get full_gem_path
  #
  # Note: Do not override if you don't know what you are doing.
  def root
    Bundler.root
  end

  # @private
  # Returns true
  def bundler_plugin_api_source?
    true
  end
end

#uriString (readonly)

Returns the remote specified with `source` block in Gemfile

Returns:

  • (String)

    the remote specified with `source` block in Gemfile



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# File 'lib/bundler/plugin/api/source.rb', line 43

module Source
  attr_reader :uri, :options, :name
  attr_accessor :dependency_names

  def initialize(opts)
    @options = opts
    @dependency_names = []
    @uri = opts["uri"]
    @type = opts["type"]
    @name = opts["name"] || "#{@type} at #{@uri}"
  end

  # This is used by the default `spec` method to constructs the
  # Specification objects for the gems and versions that can be installed
  # by this source plugin.
  #
  # Note: If the spec method is overridden, this function is not necessary
  #
  # @return [Array<String>] paths of the gemspec files for gems that can
  #                         be installed
  def fetch_gemspec_files
    []
  end

  # Options to be saved in the lockfile so that the source plugin is able
  # to check out same version of gem later.
  #
  # There options are passed when the source plugin is created from the
  # lock file.
  #
  # @return [Hash]
  def options_to_lock
    {}
  end

  # Install the gem specified by the spec at appropriate path.
  # `install_path` provides a sufficient default, if the source can only
  # satisfy one gem,  but is not binding.
  #
  # @return [String] post installation message (if any)
  def install(spec, opts)
    raise MalformattedPlugin, "Source plugins need to override the install method."
  end

  # It builds extensions, generates bins and installs them for the spec
  # provided.
  #
  # It depends on `spec.loaded_from` to get full_gem_path. The source
  # plugins should set that.
  #
  # It should be called in `install` after the plugin is done placing the
  # gem at correct install location.
  #
  # It also runs Gem hooks `pre_install`, `post_build` and `post_install`
  #
  # Note: Do not override if you don't know what you are doing.
  def post_install(spec, disable_exts = false)
    opts = { :env_shebang => false, :disable_extensions => disable_exts }
    installer = Bundler::Source::Path::Installer.new(spec, opts)
    installer.post_install
  end

  # A default installation path to install a single gem. If the source
  # servers multiple gems, it's not of much use and the source should one
  # of its own.
  def install_path
    @install_path ||=
      begin
        base_name = File.basename(URI.parse(uri).normalize.path)

        gem_install_dir.join("#{base_name}-#{uri_hash[0..11]}")
      end
  end

  # Parses the gemspec files to find the specs for the gems that can be
  # satisfied by the source.
  #
  # Few important points to keep in mind:
  #   - If the gems are not installed then it shall return specs for all
  #   the gems it can satisfy
  #   - If gem is installed (that is to be detected by the plugin itself)
  #   then it shall return at least the specs that are installed.
  #   - The `loaded_from` for each of the specs shall be correct (it is
  #   used to find the load path)
  #
  # @return [Bundler::Index] index containing the specs
  def specs
    files = fetch_gemspec_files

    Bundler::Index.build do |index|
      files.each do |file|
        next unless spec = Bundler.load_gemspec(file)
        Bundler.rubygems.set_installed_by_version(spec)

        spec.source = self
        Bundler.rubygems.validate(spec)

        index << spec
      end
    end
  end

  # Set internal representation to fetch the gems/specs from remote.
  #
  # When this is called, the source should try to fetch the specs and
  # install from remote path.
  def remote!
  end

  # Set internal representation to fetch the gems/specs from app cache.
  #
  # When this is called, the source should try to fetch the specs and
  # install from the path provided by `app_cache_path`.
  def cached!
  end

  # This is called to update the spec and installation.
  #
  # If the source plugin is loaded from lockfile or otherwise, it shall
  # refresh the cache/specs (e.g. git sources can make a fresh clone).
  def unlock!
  end

  # Name of directory where plugin the is expected to cache the gems when
  # #cache is called.
  #
  # Also this name is matched against the directories in cache for pruning
  #
  # This is used by `app_cache_path`
  def app_cache_dirname
    base_name = File.basename(URI.parse(uri).normalize.path)
    "#{base_name}-#{uri_hash}"
  end

  # This method is called while caching to save copy of the gems that the
  # source can resolve to path provided by `app_cache_app`so that they can
  # be reinstalled from the cache without querying the remote (i.e. an
  # alternative to remote)
  #
  # This is stored with the app and source plugins should try to provide
  # specs and install only from this cache when `cached!` is called.
  #
  # This cache is different from the internal caching that can be done
  # at sub paths of `cache_path` (from API). This can be though as caching
  # by bundler.
  def cache(spec, custom_path = nil)
    new_cache_path = app_cache_path(custom_path)

    FileUtils.rm_rf(new_cache_path)
    FileUtils.cp_r(install_path, new_cache_path)
    FileUtils.touch(app_cache_path.join(".bundlecache"))
  end

  # This shall check if two source object represent the same source.
  #
  # The comparison shall take place only on the attribute that can be
  # inferred from the options passed from Gemfile and not on attibutes
  # that are used to pin down the gem to specific version (e.g. Git
  # sources should compare on branch and tag but not on commit hash)
  #
  # The sources objects are constructed from Gemfile as well as from
  # lockfile. To converge the sources, it is necessary that they match.
  #
  # The same applies for `eql?` and `hash`
  def ==(other)
    other.is_a?(self.class) && uri == other.uri
  end

  # When overriding `eql?` please preserve the behaviour as mentioned in
  # docstring for `==` method.
  alias_method :eql?, :==

  # When overriding `hash` please preserve the behaviour as mentioned in
  # docstring for `==` method, i.e. two methods equal by above comparison
  # should have same hash.
  def hash
    [self.class, uri].hash
  end

  # A helper method, not necessary if not used internally.
  def installed?
    File.directory?(install_path)
  end

  # The full path where the plugin should cache the gem so that it can be
  # installed latter.
  #
  # Note: Do not override if you don't know what you are doing.
  def app_cache_path(custom_path = nil)
    @app_cache_path ||= Bundler.app_cache(custom_path).join(app_cache_dirname)
  end

  # Used by definition.
  #
  # Note: Do not override if you don't know what you are doing.
  def unmet_deps
    specs.unmet_dependency_names
  end

  # Note: Do not override if you don't know what you are doing.
  def can_lock?(spec)
    spec.source == self
  end

  # Generates the content to be entered into the lockfile.
  # Saves type and remote and also calls to `options_to_lock`.
  #
  # Plugin should use `options_to_lock` to save information in lockfile
  # and not override this.
  #
  # Note: Do not override if you don't know what you are doing.
  def to_lock
    out = String.new("#{LockfileParser::PLUGIN}\n")
    out << "  remote: #{@uri}\n"
    out << "  type: #{@type}\n"
    options_to_lock.each do |opt, value|
      out << "  #{opt}: #{value}\n"
    end
    out << "  specs:\n"
  end

  def to_s
    "plugin source for #{options[:type]} with uri #{uri}"
  end

  # Note: Do not override if you don't know what you are doing.
  def include?(other)
    other == self
  end

  def uri_hash
    Digest::SHA1.hexdigest(uri)
  end

  # Note: Do not override if you don't know what you are doing.
  def gem_install_dir
    Bundler.install_path
  end

  # It is used to obtain the full_gem_path.
  #
  # spec's loaded_from path is expanded against this to get full_gem_path
  #
  # Note: Do not override if you don't know what you are doing.
  def root
    Bundler.root
  end

  # @private
  # Returns true
  def bundler_plugin_api_source?
    true
  end
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql?

This shall check if two source object represent the same source.

The comparison shall take place only on the attribute that can be inferred from the options passed from Gemfile and not on attibutes that are used to pin down the gem to specific version (e.g. Git sources should compare on branch and tag but not on commit hash)

The sources objects are constructed from Gemfile as well as from lockfile. To converge the sources, it is necessary that they match.

The same applies for `eql?` and `hash`



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# File 'lib/bundler/plugin/api/source.rb', line 207

def ==(other)
  other.is_a?(self.class) && uri == other.uri
end

#app_cache_dirnameObject

Name of directory where plugin the is expected to cache the gems when #cache is called.

Also this name is matched against the directories in cache for pruning

This is used by `app_cache_path`



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# File 'lib/bundler/plugin/api/source.rb', line 172

def app_cache_dirname
  base_name = File.basename(URI.parse(uri).normalize.path)
  "#{base_name}-#{uri_hash}"
end

#app_cache_path(custom_path = nil) ⇒ Object

The full path where the plugin should cache the gem so that it can be installed latter.

Note: Do not override if you don't know what you are doing.



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# File 'lib/bundler/plugin/api/source.rb', line 231

def app_cache_path(custom_path = nil)
  @app_cache_path ||= Bundler.app_cache(custom_path).join(app_cache_dirname)
end

#bundler_plugin_api_source?Boolean

Returns true

Returns:

  • (Boolean)


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# File 'lib/bundler/plugin/api/source.rb', line 293

def bundler_plugin_api_source?
  true
end

#cache(spec, custom_path = nil) ⇒ Object

This method is called while caching to save copy of the gems that the source can resolve to path provided by `app_cache_app`so that they can be reinstalled from the cache without querying the remote (i.e. an alternative to remote)

This is stored with the app and source plugins should try to provide specs and install only from this cache when `cached!` is called.

This cache is different from the internal caching that can be done at sub paths of `cache_path` (from API). This can be though as caching by bundler.



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# File 'lib/bundler/plugin/api/source.rb', line 188

def cache(spec, custom_path = nil)
  new_cache_path = app_cache_path(custom_path)

  FileUtils.rm_rf(new_cache_path)
  FileUtils.cp_r(install_path, new_cache_path)
  FileUtils.touch(app_cache_path.join(".bundlecache"))
end

#cached!Object

Set internal representation to fetch the gems/specs from app cache.

When this is called, the source should try to fetch the specs and install from the path provided by `app_cache_path`.



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# File 'lib/bundler/plugin/api/source.rb', line 156

def cached!
end

#can_lock?(spec) ⇒ Boolean

Note: Do not override if you don't know what you are doing.

Returns:

  • (Boolean)


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# File 'lib/bundler/plugin/api/source.rb', line 243

def can_lock?(spec)
  spec.source == self
end

#fetch_gemspec_filesArray<String>

This is used by the default `spec` method to constructs the Specification objects for the gems and versions that can be installed by this source plugin.

Note: If the spec method is overridden, this function is not necessary

Returns:

  • (Array<String>)

    paths of the gemspec files for gems that can be installed



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# File 'lib/bundler/plugin/api/source.rb', line 63

def fetch_gemspec_files
  []
end

#gem_install_dirObject

Note: Do not override if you don't know what you are doing.



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# File 'lib/bundler/plugin/api/source.rb', line 278

def gem_install_dir
  Bundler.install_path
end

#hashObject

When overriding `hash` please preserve the behaviour as mentioned in docstring for `==` method, i.e. two methods equal by above comparison should have same hash.



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# File 'lib/bundler/plugin/api/source.rb', line 218

def hash
  [self.class, uri].hash
end

#include?(other) ⇒ Boolean

Note: Do not override if you don't know what you are doing.

Returns:

  • (Boolean)


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# File 'lib/bundler/plugin/api/source.rb', line 269

def include?(other)
  other == self
end

#initialize(opts) ⇒ Object



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# File 'lib/bundler/plugin/api/source.rb', line 47

def initialize(opts)
  @options = opts
  @dependency_names = []
  @uri = opts["uri"]
  @type = opts["type"]
  @name = opts["name"] || "#{@type} at #{@uri}"
end

#install(spec, opts) ⇒ String

Install the gem specified by the spec at appropriate path. `install_path` provides a sufficient default, if the source can only satisfy one gem, but is not binding.

Returns:

  • (String)

    post installation message (if any)

Raises:



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# File 'lib/bundler/plugin/api/source.rb', line 83

def install(spec, opts)
  raise MalformattedPlugin, "Source plugins need to override the install method."
end

#install_pathObject

A default installation path to install a single gem. If the source servers multiple gems, it's not of much use and the source should one of its own.



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# File 'lib/bundler/plugin/api/source.rb', line 108

def install_path
  @install_path ||=
    begin
      base_name = File.basename(URI.parse(uri).normalize.path)

      gem_install_dir.join("#{base_name}-#{uri_hash[0..11]}")
    end
end

#installed?Boolean

A helper method, not necessary if not used internally.

Returns:

  • (Boolean)


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# File 'lib/bundler/plugin/api/source.rb', line 223

def installed?
  File.directory?(install_path)
end

#options_to_lockHash

Options to be saved in the lockfile so that the source plugin is able to check out same version of gem later.

There options are passed when the source plugin is created from the lock file.

Returns:

  • (Hash)


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# File 'lib/bundler/plugin/api/source.rb', line 74

def options_to_lock
  {}
end

#post_install(spec, disable_exts = false) ⇒ Object

It builds extensions, generates bins and installs them for the spec provided.

It depends on `spec.loaded_from` to get full_gem_path. The source plugins should set that.

It should be called in `install` after the plugin is done placing the gem at correct install location.

It also runs Gem hooks `pre_install`, `post_build` and `post_install`

Note: Do not override if you don't know what you are doing.



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# File 'lib/bundler/plugin/api/source.rb', line 99

def post_install(spec, disable_exts = false)
  opts = { :env_shebang => false, :disable_extensions => disable_exts }
  installer = Bundler::Source::Path::Installer.new(spec, opts)
  installer.post_install
end

#remote!Object

Set internal representation to fetch the gems/specs from remote.

When this is called, the source should try to fetch the specs and install from remote path.



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# File 'lib/bundler/plugin/api/source.rb', line 149

def remote!
end

#rootObject

It is used to obtain the full_gem_path.

spec's loaded_from path is expanded against this to get full_gem_path

Note: Do not override if you don't know what you are doing.



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# File 'lib/bundler/plugin/api/source.rb', line 287

def root
  Bundler.root
end

#specsBundler::Index

Parses the gemspec files to find the specs for the gems that can be satisfied by the source.

Few important points to keep in mind:

- If the gems are not installed then it shall return specs for all
the gems it can satisfy
- If gem is installed (that is to be detected by the plugin itself)
then it shall return at least the specs that are installed.
- The `loaded_from` for each of the specs shall be correct (it is
used to find the load path)

Returns:



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# File 'lib/bundler/plugin/api/source.rb', line 129

def specs
  files = fetch_gemspec_files

  Bundler::Index.build do |index|
    files.each do |file|
      next unless spec = Bundler.load_gemspec(file)
      Bundler.rubygems.set_installed_by_version(spec)

      spec.source = self
      Bundler.rubygems.validate(spec)

      index << spec
    end
  end
end

#to_lockObject

Generates the content to be entered into the lockfile. Saves type and remote and also calls to `options_to_lock`.

Plugin should use `options_to_lock` to save information in lockfile and not override this.

Note: Do not override if you don't know what you are doing.



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# File 'lib/bundler/plugin/api/source.rb', line 254

def to_lock
  out = String.new("#{LockfileParser::PLUGIN}\n")
  out << "  remote: #{@uri}\n"
  out << "  type: #{@type}\n"
  options_to_lock.each do |opt, value|
    out << "  #{opt}: #{value}\n"
  end
  out << "  specs:\n"
end

#to_sObject



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# File 'lib/bundler/plugin/api/source.rb', line 264

def to_s
  "plugin source for #{options[:type]} with uri #{uri}"
end

#unlock!Object

This is called to update the spec and installation.

If the source plugin is loaded from lockfile or otherwise, it shall refresh the cache/specs (e.g. git sources can make a fresh clone).



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# File 'lib/bundler/plugin/api/source.rb', line 163

def unlock!
end

#unmet_depsObject

Used by definition.

Note: Do not override if you don't know what you are doing.



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# File 'lib/bundler/plugin/api/source.rb', line 238

def unmet_deps
  specs.unmet_dependency_names
end

#uri_hashObject



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# File 'lib/bundler/plugin/api/source.rb', line 273

def uri_hash
  Digest::SHA1.hexdigest(uri)
end