Class: Gem::DependencyInstaller

Inherits:
Object
  • Object
show all
Extended by:
Deprecate
Includes:
UserInteraction
Defined in:
lib/rubygems/dependency_installer.rb

Overview

Installs a gem along with all its dependencies from local and remote gems.

Constant Summary collapse

DEFAULT_OPTIONS =

:nodoc:

{ # :nodoc:
  :env_shebang         => false,
  :document            => %w[ri],
  :domain              => :both, # HACK dup
  :force               => false,
  :format_executable   => false, # HACK dup
  :ignore_dependencies => false,
  :prerelease          => false,
  :security_policy     => nil, # HACK NoSecurity requires OpenSSL. AlmostNo? Low?
  :wrappers            => true,
  :build_args          => nil,
  :build_docs_in_background => false,
  :install_as_default  => false
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Deprecate

deprecate, skip, skip=, skip_during

Methods included from UserInteraction

#alert, #alert_error, #alert_warning, #ask, #ask_for_password, #ask_yes_no, #choose_from_list, #say, #terminate_interaction, #verbose

Methods included from DefaultUserInteraction

ui, #ui, #ui=, ui=, use_ui, #use_ui

Constructor Details

#initialize(options = {}) ⇒ DependencyInstaller

Creates a new installer instance.

Options are:

:cache_dir

Alternate repository path to store .gem files in.

:domain

:local, :remote, or :both. :local only searches gems in the current directory. :remote searches only gems in Gem::sources. :both searches both.

:env_shebang

See Gem::Installer::new.

:force

See Gem::Installer#install.

:format_executable

See Gem::Installer#initialize.

:ignore_dependencies

Don't install any dependencies.

:install_dir

See Gem::Installer#install.

:prerelease

Allow prerelease versions. See #install.

:security_policy

See Gem::Installer::new and Gem::Security.

:user_install

See Gem::Installer.new

:wrappers

See Gem::Installer::new

:build_args

See Gem::Installer::new


69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
# File 'lib/rubygems/dependency_installer.rb', line 69

def initialize options = {}
  @only_install_dir = !!options[:install_dir]
  @install_dir = options[:install_dir] || Gem.dir
  @build_root = options[:build_root]

  options = DEFAULT_OPTIONS.merge options

  @bin_dir             = options[:bin_dir]
  @dev_shallow         = options[:dev_shallow]
  @development         = options[:development]
  @document            = options[:document]
  @domain              = options[:domain]
  @env_shebang         = options[:env_shebang]
  @force               = options[:force]
  @format_executable   = options[:format_executable]
  @ignore_dependencies = options[:ignore_dependencies]
  @prerelease          = options[:prerelease]
  @security_policy     = options[:security_policy]
  @user_install        = options[:user_install]
  @wrappers            = options[:wrappers]
  @build_args          = options[:build_args]
  @build_docs_in_background = options[:build_docs_in_background]
  @install_as_default  = options[:install_as_default]
  @dir_mode            = options[:dir_mode]
  @data_mode           = options[:data_mode]
  @prog_mode           = options[:prog_mode]

  # Indicates that we should not try to update any deps unless
  # we absolutely must.
  @minimal_deps        = options[:minimal_deps]

  @available      = nil
  @installed_gems = []
  @toplevel_specs = nil

  @cache_dir = options[:cache_dir] || @install_dir

  @errors = []
end

Instance Attribute Details

#documentObject (readonly)

Documentation types. For use by the Gem.done_installing hook


38
39
40
# File 'lib/rubygems/dependency_installer.rb', line 38

def document
  @document
end

#errorsObject (readonly)

Errors from SpecFetcher while searching for remote specifications


43
44
45
# File 'lib/rubygems/dependency_installer.rb', line 43

def errors
  @errors
end

#installed_gemsObject (readonly)

List of gems installed by #install in alphabetic order


48
49
50
# File 'lib/rubygems/dependency_installer.rb', line 48

def installed_gems
  @installed_gems
end

Instance Method Details

#add_found_dependencies(to_do, dependency_list) ⇒ Object

– TODO remove at RubyGems 4, no longer used


113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
# File 'lib/rubygems/dependency_installer.rb', line 113

def add_found_dependencies to_do, dependency_list # :nodoc:
  seen = {}
  dependencies = Hash.new { |h, name| h[name] = Gem::Dependency.new name }

  until to_do.empty? do
    spec = to_do.shift

    # HACK why is spec nil?
    next if spec.nil? or seen[spec.name]
    seen[spec.name] = true

    deps = spec.runtime_dependencies

    if @development
      if @dev_shallow
        if @toplevel_specs.include? spec.full_name
          deps |= spec.development_dependencies
        end
      else
        deps |= spec.development_dependencies
      end
    end

    deps.each do |dep|
      dependencies[dep.name] = dependencies[dep.name].merge dep

      if @minimal_deps
        next if Gem::Specification.any? do |installed_spec|
                  dep.name == installed_spec.name and
                    dep.requirement.satisfied_by? installed_spec.version
                end
      end

      results = find_gems_with_sources(dep)

      results.sorted.each do |t|
        to_do.push t.spec
      end

      results.remove_installed! dep

      @available << results
      results.inject_into_list dependency_list
    end
  end

  dependency_list.remove_specs_unsatisfied_by dependencies
end

#available_set_for(dep_or_name, version) ⇒ Object

Creates an AvailableSet to install from based on dep_or_name and version


167
168
169
170
171
172
173
174
175
176
177
# File 'lib/rubygems/dependency_installer.rb', line 167

def available_set_for dep_or_name, version # :nodoc:
  if String === dep_or_name then
    find_spec_by_name_and_version dep_or_name, version, @prerelease
  else
    dep = dep_or_name.dup
    dep.prerelease = @prerelease
    @available = find_gems_with_sources dep
  end

  @available.pick_best!
end

#consider_local?Boolean

Indicated, based on the requested domain, if local gems should be considered.


183
184
185
# File 'lib/rubygems/dependency_installer.rb', line 183

def consider_local?
  @domain == :both or @domain == :local
end

#consider_remote?Boolean

Indicated, based on the requested domain, if remote gems should be considered.


191
192
193
# File 'lib/rubygems/dependency_installer.rb', line 191

def consider_remote?
  @domain == :both or @domain == :remote
end

#find_gems_with_sources(dep, best_only = false) ⇒ Object

Returns a list of pairs of gemspecs and source_uris that match Gem::Dependency dep from both local (Dir.pwd) and remote (Gem.sources) sources. Gems are sorted with newer gems preferred over older gems, and local gems preferred over remote gems.


201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
# File 'lib/rubygems/dependency_installer.rb', line 201

def find_gems_with_sources dep, best_only=false # :nodoc:
  set = Gem::AvailableSet.new

  if consider_local?
    sl = Gem::Source::Local.new

    if spec = sl.find_gem(dep.name)
      if dep.matches_spec? spec
        set.add spec, sl
      end
    end
  end

  if consider_remote?
    begin
      # TODO this is pulled from #spec_for_dependency to allow
      # us to filter tuples before fetching specs.
      #
      tuples, errors = Gem::SpecFetcher.fetcher.search_for_dependency dep

      if best_only && !tuples.empty?
        tuples.sort! do |a,b|
          if b[0].version == a[0].version
            if b[0].platform != Gem::Platform::RUBY
              1
            else
              -1
            end
          else
            b[0].version <=> a[0].version
          end
        end
        tuples = [tuples.first]
      end

      specs = []
      tuples.each do |tup, source|
        begin
          spec = source.fetch_spec(tup)
        rescue Gem::RemoteFetcher::FetchError => e
          errors << Gem::SourceFetchProblem.new(source, e)
        else
          specs << [spec, source]
        end
      end

      if @errors
        @errors += errors
      else
        @errors = errors
      end

      set << specs

    rescue Gem::RemoteFetcher::FetchError => e
      # FIX if there is a problem talking to the network, we either need to always tell
      # the user (no really_verbose) or fail hard, not silently tell them that we just
      # couldn't find their requested gem.
      verbose do
        "Error fetching remote data:\t\t#{e.message}\n" \
          "Falling back to local-only install"
      end
      @domain = :local
    end
  end

  set
end

#find_spec_by_name_and_version(gem_name, version = Gem::Requirement.default, prerelease = false) ⇒ Object

Finds a spec and the source_uri it came from for gem gem_name and version. Returns an Array of specs and sources required for installation of the gem.


275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
# File 'lib/rubygems/dependency_installer.rb', line 275

def find_spec_by_name_and_version gem_name,
                                  version = Gem::Requirement.default,
                                  prerelease = false
  set = Gem::AvailableSet.new

  if consider_local?
    if gem_name =~ /\.gem$/ and File.file? gem_name then
      src = Gem::Source::SpecificFile.new(gem_name)
      set.add src.spec, src
    elsif gem_name =~ /\.gem$/ then
      Dir[gem_name].each do |name|
        begin
          src = Gem::Source::SpecificFile.new name
          set.add src.spec, src
        rescue Gem::Package::FormatError
        end
      end
    else
      local = Gem::Source::Local.new

      if s = local.find_gem(gem_name, version)
        set.add s, local
      end
    end
  end

  if set.empty?
    dep = Gem::Dependency.new gem_name, version
    dep.prerelease = true if prerelease

    set = find_gems_with_sources(dep, true)
    set.match_platform!
  end

  if set.empty?
    raise Gem::SpecificGemNotFoundException.new(gem_name, version, @errors)
  end

  @available = set
end

#gather_dependenciesObject

Gathers all dependencies necessary for the installation from local and remote sources unless the ignore_dependencies was given. – TODO remove at RubyGems 4


322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
# File 'lib/rubygems/dependency_installer.rb', line 322

def gather_dependencies # :nodoc:
  specs = @available.all_specs

  # these gems were listed by the user, always install them
  keep_names = specs.map { |spec| spec.full_name }

  if @dev_shallow
    @toplevel_specs = keep_names
  end

  dependency_list = Gem::DependencyList.new @development
  dependency_list.add(*specs)
  to_do = specs.dup
  add_found_dependencies to_do, dependency_list unless @ignore_dependencies

  # REFACTOR maybe abstract away using Gem::Specification.include? so
  # that this isn't dependent only on the currently installed gems
  dependency_list.specs.reject! { |spec|
    not keep_names.include?(spec.full_name) and
    Gem::Specification.include?(spec)
  }

  unless dependency_list.ok? or @ignore_dependencies or @force then
    reason = dependency_list.why_not_ok?.map { |k,v|
      "#{k} requires #{v.join(", ")}"
    }.join("; ")
    raise Gem::DependencyError, "Unable to resolve dependencies: #{reason}"
  end

  @gems_to_install = dependency_list.dependency_order.reverse
end

#in_background(what) ⇒ Object

:nodoc:


355
356
357
358
359
360
361
362
363
364
365
366
367
368
# File 'lib/rubygems/dependency_installer.rb', line 355

def in_background what # :nodoc:
  fork_happened = false
  if @build_docs_in_background and Process.respond_to?(:fork)
    begin
      Process.fork do
        yield
      end
      fork_happened = true
      say "#{what} in a background process."
    rescue NotImplementedError
    end
  end
  yield unless fork_happened
end

#install(dep_or_name, version = Gem::Requirement.default) ⇒ Object

Installs the gem dep_or_name and all its dependencies. Returns an Array of installed gem specifications.

If the :prerelease option is set and there is a prerelease for dep_or_name the prerelease version will be installed.

Unless explicitly specified as a prerelease dependency, prerelease gems that dep_or_name depend on will not be installed.

If c-1.a depends on b-1 and a-1.a and there is a gem b-1.a available then c-1.a, b-1 and a-1.a will be installed. b-1.a will need to be installed separately.


384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
# File 'lib/rubygems/dependency_installer.rb', line 384

def install dep_or_name, version = Gem::Requirement.default
  request_set = resolve_dependencies dep_or_name, version

  @installed_gems = []

  options = {
    :bin_dir             => @bin_dir,
    :build_args          => @build_args,
    :document            => @document,
    :env_shebang         => @env_shebang,
    :force               => @force,
    :format_executable   => @format_executable,
    :ignore_dependencies => @ignore_dependencies,
    :prerelease          => @prerelease,
    :security_policy     => @security_policy,
    :user_install        => @user_install,
    :wrappers            => @wrappers,
    :build_root          => @build_root,
    :install_as_default  => @install_as_default,
    :dir_mode            => @dir_mode,
    :data_mode           => @data_mode,
    :prog_mode           => @prog_mode,
  }
  options[:install_dir] = @install_dir if @only_install_dir

  request_set.install options do |_, installer|
    @installed_gems << installer.spec if installer
  end

  @installed_gems.sort!

  # Since this is currently only called for docs, we can be lazy and just say
  # it's documentation. Ideally the hook adder could decide whether to be in
  # the background or not, and what to call it.
  in_background "Installing documentation" do
    Gem.done_installing_hooks.each do |hook|
      hook.call self, @installed_gems
    end
  end unless Gem.done_installing_hooks.empty?

  @installed_gems
end

#install_development_depsObject

:nodoc:


427
428
429
430
431
432
433
434
435
# File 'lib/rubygems/dependency_installer.rb', line 427

def install_development_deps # :nodoc:
  if @development and @dev_shallow then
    :shallow
  elsif @development then
    :all
  else
    :none
  end
end

#resolve_dependencies(dep_or_name, version) ⇒ Object

:nodoc:


437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
# File 'lib/rubygems/dependency_installer.rb', line 437

def resolve_dependencies dep_or_name, version # :nodoc:
  request_set = Gem::RequestSet.new
  request_set.development         = @development
  request_set.development_shallow = @dev_shallow
  request_set.soft_missing = @force
  request_set.prerelease = @prerelease
  request_set.remote = false unless consider_remote?

  installer_set = Gem::Resolver::InstallerSet.new @domain
  installer_set.ignore_installed = @only_install_dir

  if consider_local?
    if dep_or_name =~ /\.gem$/ and File.file? dep_or_name then
      src = Gem::Source::SpecificFile.new dep_or_name
      installer_set.add_local dep_or_name, src.spec, src
      version = src.spec.version if version == Gem::Requirement.default
    elsif dep_or_name =~ /\.gem$/ then
      Dir[dep_or_name].each do |name|
        begin
          src = Gem::Source::SpecificFile.new name
          installer_set.add_local dep_or_name, src.spec, src
        rescue Gem::Package::FormatError
        end
      end
      # else This is a dependency. InstallerSet handles this case
    end
  end

  dependency =
    if spec = installer_set.local?(dep_or_name) then
      Gem::Dependency.new spec.name, version
    elsif String === dep_or_name then
      Gem::Dependency.new dep_or_name, version
    else
      dep_or_name
    end

  dependency.prerelease = @prerelease

  request_set.import [dependency]

  installer_set.add_always_install dependency

  request_set.always_install = installer_set.always_install

  if @ignore_dependencies then
    installer_set.ignore_dependencies = true
    request_set.ignore_dependencies   = true
    request_set.soft_missing          = true
  end

  request_set.resolve installer_set

  @errors.concat request_set.errors

  request_set
end