Class: Chef::Provider::Package::Rubygems::GemEnvironment

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/provider/package/rubygems.rb

Constant Summary collapse

DEFAULT_UNINSTALLER_OPTS = 
{ ignore: true, executables: true }.freeze

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ GemEnvironment

Returns a new instance of GemEnvironment.



48
49
50
51
52
53
54
 
# File 'lib/chef/provider/package/rubygems.rb', line 48

def initialize(*args)
  super
  # HACK: trigger gem config load early. Otherwise it can get lazy
  # loaded during operations where we've set Gem.sources to an
  # alternate value and overwrite it with the defaults.
  Gem.configuration
end

Instance Method Details

#candidate_version_from_file(gem_dependency, source) ⇒ Object

Determines the candidate version for a gem from a .gem file on disk and checks if it matches the version constraints in gem_dependency

Returns

Gem::Version a singular gem version object is returned if the gem

is available

nil returns nil if the gem on disk doesn’t match the

version constraints for +gem_dependency+



151
152
153
154
155
156
157
158
159
160
161
 
# File 'lib/chef/provider/package/rubygems.rb', line 151

def candidate_version_from_file(gem_dependency, source)
  spec = spec_from_file(source)
  if spec.satisfies_requirement?(gem_dependency)
    logger.trace { "found candidate gem version #{spec.version} from local gem package #{source}" }
    spec.version
  else
    # This is probably going to end badly...
    logger.warn { "gem package #{source} does not satisfy the requirements #{gem_dependency}" }
    nil
  end
end

#candidate_version_from_remote(gem_dependency, *sources) ⇒ Object

Finds the newest version that satisfies the constraints of gem_dependency. The version is determined from the cache or a round-trip to the server as needed. The architecture and gem sources will be set before making the query.

Returns

Gem::Version a singular gem version object is returned if the gem

is available

nil returns nil if the gem could not be found

Raises:

  • (NotImplementedError) 


172
173
174
 
# File 'lib/chef/provider/package/rubygems.rb', line 172

def candidate_version_from_remote(gem_dependency, *sources)
  raise NotImplementedError
end

#dependency_installer(**opts) ⇒ Object 



243
244
245
 
# File 'lib/chef/provider/package/rubygems.rb', line 243

def dependency_installer(**opts)
  Gem::DependencyInstaller.new(**opts)
end

#find_newest_remote_version(gem_dependency, *sources) ⇒ Object

Find the newest gem version available from Gem.sources that satisfies the constraints of gem_dependency



179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
 
# File 'lib/chef/provider/package/rubygems.rb', line 179

def find_newest_remote_version(gem_dependency, *sources)
  spec, source =
    if Chef::Config[:rubygems_cache_enabled]
      # This code caches every gem on rubygems.org and uses lots of RAM
      available_gems = dependency_installer.find_gems_with_sources(gem_dependency)
      available_gems.pick_best!
      best_gem = available_gems.set.first
      best_gem && [best_gem.spec, best_gem.source]
    else
      # Use the API that 'gem install' calls which does not pull down the rubygems universe
      begin
        rs = dependency_installer.resolve_dependencies gem_dependency.name, gem_dependency.requirement
        rs.specs.find { |s| s.name == gem_dependency.name }
        # ruby-3.0.0 versions of rubygems-3.x throws NoMethodError when the dep is not found
      rescue Gem::UnsatisfiableDependencyError, NoMethodError
        nil
      end
    end

  version = spec && spec.version
  if version
    logger.trace { "found gem #{spec.name} version #{version} for platform #{spec.platform} from #{source}" }
    version
  else
    source_list = sources.compact.empty? ? "[#{Gem.sources.to_a.join(", ")}]" : "[#{sources.join(", ")}]"
    logger.warn { "failed to find gem #{gem_dependency} from #{source_list}" }
    nil
  end
end

#gem_paths ⇒ Object

The paths where rubygems should search for installed gems. Implemented by subclasses.

Raises:

  • (NotImplementedError) 


58
59
60
 
# File 'lib/chef/provider/package/rubygems.rb', line 58

def gem_paths
  raise NotImplementedError
end

#gem_source_index ⇒ Gem::SourceIndex

A rubygems source index containing the list of gemspecs for all available gems in the gem installation. Implemented by subclasses

Returns:

  • (Gem::SourceIndex)

Raises:

  • (NotImplementedError) 


68
69
70
 
# File 'lib/chef/provider/package/rubygems.rb', line 68

def gem_source_index
  raise NotImplementedError
end

#gem_specification ⇒ Gem::Specification

A rubygems specification object containing the list of gemspecs for all available gems in the gem installation. Implemented by subclasses

Returns:

  • (Gem::Specification)

Raises:

  • (NotImplementedError) 


78
79
80
 
# File 'lib/chef/provider/package/rubygems.rb', line 78

def gem_specification
  raise NotImplementedError
end

#install(gem_dependency, options = {}) ⇒ Object

Installs a gem via the rubygems ruby API.

Options

:sources rubygems servers to use Other options are passed to Gem::DependencyInstaller.new



214
215
216
217
218
219
220
 
# File 'lib/chef/provider/package/rubygems.rb', line 214

def install(gem_dependency, options = {})
  with_gem_sources(*options.delete(:sources)) do
    with_correct_verbosity do
      dependency_installer(**options).install(gem_dependency)
    end
  end
end

#installed_versions(gem_dep) ⇒ Array<Gem::Specification>

Lists the installed versions of gem_name, constrained by the version spec in gem_dep

Parameters:

  • gem_dep (Gem::Dependency) —

    the version specification that constrains which gems are used.

Returns:

  • (Array<Gem::Specification>) —

    an array of Gem::Specification objects



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
 
# File 'lib/chef/provider/package/rubygems.rb', line 93

def installed_versions(gem_dep)
  rubygems_version = Gem::Version.new(Gem::VERSION)
  if rubygems_version >= Gem::Version.new("3.1")
    # In newer Rubygems, bundler is now a "default gem" which means
    # even with AlternateGemEnvironment when you try to get the
    # installed versions, you get the one from Chef's Ruby's default
    # gems. This workaround ignores default gems entirely so we see
    # only the installed gems.
    stubs = gem_specification.send(:installed_stubs, gem_specification.dirs, "#{gem_dep.name}-*.gemspec")
    # Filter down to only to only stubs we actually want. The name
    # filter is needed in case of things like `foo-*.gemspec` also
    # matching a gem named `foo-bar`.
    stubs.select! { |stub| stub.name == gem_dep.name && gem_dep.requirement.satisfied_by?(stub.version) }
    # This isn't sorting before returning because the only code that
    # uses this method calls `max_by` so it doesn't need to be sorted.
    stubs
  else # >= rubygems 1.8 behavior
    gem_specification.find_all_by_name(gem_dep.name, gem_dep.requirement)
  end
end

#rubygems_version ⇒ Object

Raises:

  • (NotImplementedError) 


82
83
84
 
# File 'lib/chef/provider/package/rubygems.rb', line 82

def rubygems_version
  raise NotImplementedError
end

#spec_from_file(file) ⇒ Object

Extracts the gemspec from a (on-disk) gem package.

Returns

Gem::Specification

– Compatibility note: Rubygems 1.x uses Gem::Format, 2.0 moved this code into Gem::Package.



135
136
137
138
139
140
141
 
# File 'lib/chef/provider/package/rubygems.rb', line 135

def spec_from_file(file)
  if defined?(Gem::Format) && Gem::Package.respond_to?(:open)
    Gem::Format.from_file_by_path(file).spec
  else
    Gem::Package.new(file).spec
  end
end

#uninstall(gem_name, gem_version = nil, opts = {}) ⇒ Object

Uninstall the gem gem_name via the rubygems ruby API. If gem_version is provided, only that version will be uninstalled. Otherwise, all versions are uninstalled.

Options

Options are passed to Gem::Uninstaller.new



228
229
230
231
232
233
 
# File 'lib/chef/provider/package/rubygems.rb', line 228

def uninstall(gem_name, gem_version = nil, opts = {})
  gem_version ? opts[:version] = gem_version : opts[:all] = true
  with_correct_verbosity do
    uninstaller(gem_name, **opts).uninstall
  end
end

#uninstaller(gem_name, **opts) ⇒ Object 



247
248
249
 
# File 'lib/chef/provider/package/rubygems.rb', line 247

def uninstaller(gem_name, **opts)
  Gem::Uninstaller.new(gem_name, **DEFAULT_UNINSTALLER_OPTS.merge(opts))
end

#with_correct_verbosity ⇒ Object

Set rubygems’ user interaction to ConsoleUI or SilentUI depending on our current debug level



238
239
240
241
 
# File 'lib/chef/provider/package/rubygems.rb', line 238

def with_correct_verbosity
  Gem::DefaultUserInteraction.ui = logger.trace? ? Gem::ConsoleUI.new : Gem::SilentUI.new
  yield
end

#with_gem_sources(*sources) ⇒ Object

Yields to the provided block with rubygems’ source list set to the list provided. Always resets the list when the block returns or raises an exception.



118
119
120
121
122
123
124
125
 
# File 'lib/chef/provider/package/rubygems.rb', line 118

def with_gem_sources(*sources)
  sources.compact!
  original_sources = Gem.sources
  Gem.sources = sources unless sources.empty?
  yield
ensure
  Gem.sources = original_sources
end