Class: Puppet::Node::Environment

Inherits:
Object
  • Object
show all
Defined in:
lib/puppet/node/environment.rb

Overview

Puppet::Node::Environment acts as a container for all configuration that is expected to vary between environments.

## The root environment

In addition to normal environments that are defined by the user,there is a special 'root' environment. It is defined as an instance variable on the Puppet::Node::Environment metaclass. The environment name is `root` and can be accessed by looking up the `:root_environment` using Puppet.lookup.

The primary purpose of the root environment is to contain parser functions that are not bound to a specific environment. The main case for this is for logging functions. Logging functions are attached to the 'root' environment when Parser::Functions.reset is called.

Direct Known Subclasses

None, Remote

Defined Under Namespace

Classes: None, Remote

Constant Summary collapse

NO_MANIFEST = 
:no_manifest

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, modulepath, manifest, config_version) ⇒ Environment

Note:

new is private for historical reasons, as previously it had been overridden to return memoized objects and was replaced with create, so this will not be invoked with the normal Ruby initialization semantics.

Instantiate a new environment


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# File 'lib/puppet/node/environment.rb', line 72

def initialize(name, modulepath, manifest, config_version)
  @name = name.intern
  @modulepath = self.class.expand_dirs(self.class.extralibs() + modulepath)
  @manifest = manifest == NO_MANIFEST ? manifest : Puppet::FileSystem.expand_path(manifest)

  @config_version = config_version
end

Instance Attribute Details

#config_version ⇒ Object (readonly)

Returns the value of attribute config_version


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# File 'lib/puppet/node/environment.rb', line 157

def config_version
  @config_version
end

#loaders ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Cached loaders - management of value handled by Puppet::Pops::Loaders


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# File 'lib/puppet/node/environment.rb', line 161

def loaders
  @loaders
end

#manifest ⇒ Object (readonly)

Returns the value of attribute manifest


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# File 'lib/puppet/node/environment.rb', line 151

def manifest
  @manifest
end

#name ⇒ Object (readonly)

Returns the value of attribute name


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# File 'lib/puppet/node/environment.rb', line 132

def name
  @name
end

Class Method Details

.create(name, modulepath, manifest = NO_MANIFEST, config_version = nil) ⇒ Puppet::Node::Environment

Create a new environment with the given name


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# File 'lib/puppet/node/environment.rb', line 41

def self.create(name, modulepath, manifest = NO_MANIFEST, config_version = nil)
  new(name, modulepath, manifest, config_version)
end

.expand_dirs(dirs) ⇒ Object

not private so it can be called in initialize


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# File 'lib/puppet/node/environment.rb', line 493

def self.expand_dirs(dirs)
  dirs.collect do |dir|
    Puppet::FileSystem.expand_path(dir)
  end
end

.extralibs ⇒ Object

not private so it can be called in tests


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# File 'lib/puppet/node/environment.rb', line 484

def self.extralibs()
  if Puppet::Util.get_env('PUPPETLIB')
    split_path(Puppet::Util.get_env('PUPPETLIB'))
  else
    []
  end
end

.remote(name) ⇒ Object

Note:

This does not provide access to the information of the remote

A “reference” to a remote environment. The created environment instance isn't expected to exist on the local system, but is instead a reference to environment information on a remote system. For instance when a catalog is being applied, this will be used on the agent.

environment's modules, manifest, or anything else. It is simply a value object to pass around and use as an environment.


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# File 'lib/puppet/node/environment.rb', line 60

def self.remote(name)
  Remote.create(name, [], NO_MANIFEST)
end

.split_path(path_string) ⇒ Object 


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# File 'lib/puppet/node/environment.rb', line 466

def self.split_path(path_string)
  path_string.split(File::PATH_SEPARATOR)
end

.valid_name?(name) ⇒ Boolean

Returns true if name is valid


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# File 'lib/puppet/node/environment.rb', line 124

def self.valid_name?(name)
  !!name.match(/\A\w+\Z/)
end

Instance Method Details

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


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# File 'lib/puppet/node/environment.rb', line 470

def ==(other)
  return true if other.kind_of?(Puppet::Node::Environment) &&
    self.name == other.name &&
    self.full_modulepath == other.full_modulepath &&
    self.manifest == other.manifest
end

#[](param) ⇒ Object

Return an environment-specific Puppet setting.


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# File 'lib/puppet/node/environment.rb', line 228

def [](param)
  Puppet.settings.value(param, self.name)
end

#check_for_reparse ⇒ Object

Checks if a reparse is required (cache of files is stale).


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# File 'lib/puppet/node/environment.rb', line 431

def check_for_reparse
  if (Puppet[:code] != @parsed_code || @known_resource_types.parse_failed?)
    @parsed_code = nil
    @known_resource_types = nil
  end
end

#configuration ⇒ Puppet::Settings::EnvironmentConf

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return the environment configuration


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# File 'lib/puppet/node/environment.rb', line 196

def configuration
  Puppet.lookup(:environments).get_conf(name)
end

#conflicting_manifest_settings? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Checks to make sure that this environment did not have a manifest set in its original environment.conf if Puppet is configured with disable_per_environment_manifest set true. If it did, the environment's modules may not function as intended by the original authors, and we may seek to halt a puppet compilation for a node in this environment.

The only exception to this would be if the environment.conf manifest is an exact, uninterpolated match for the current default_manifest setting.


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# File 'lib/puppet/node/environment.rb', line 177

def conflicting_manifest_settings?
  return false if !Puppet[:disable_per_environment_manifest]
  original_manifest = configuration.raw_setting(:manifest)
  !original_manifest.nil? && !original_manifest.empty? && original_manifest != Puppet[:default_manifest]
end

#each_plugin_directory {|String| ... } ⇒ Object

Yields each modules' plugin directory if the plugin directory (modulename/lib) is present on the filesystem.

Yields:

  • (String) —

    Yields the plugin directory from each module to the block.


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# File 'lib/puppet/node/environment.rb', line 247

def each_plugin_directory(&block)
  modules.map(&:plugin_directory).each do |lib|
    lib = Puppet::Util::Autoload.cleanpath(lib)
    yield lib if File.directory?(lib)
  end
end

#full_modulepath ⇒ Array<String>

Returns All directories in the modulepath (even if they are not present on disk)


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# File 'lib/puppet/node/environment.rb', line 144

def full_modulepath
  @modulepath
end

#hash ⇒ Object 


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# File 'lib/puppet/node/environment.rb', line 479

def hash
  [self.class, name, full_modulepath, manifest].hash
end

#inspect ⇒ Object 


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# File 'lib/puppet/node/environment.rb', line 451

def inspect
  %Q{<#{self.class}:#{self.object_id} @name="#{name}" @manifest="#{manifest}" @modulepath="#{full_modulepath.join(":")}" >}
end

#known_resource_types ⇒ Puppet::Resource::TypeCollection

Returns The current global TypeCollection


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# File 'lib/puppet/node/environment.rb', line 234

def known_resource_types
  if @known_resource_types.nil?
    @known_resource_types = Puppet::Resource::TypeCollection.new(self)
    @known_resource_types.import_ast(perform_initial_import(), '')
  end
  @known_resource_types
end

#module(name) ⇒ Puppet::Module?

Locate a module instance by the module name alone.


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# File 'lib/puppet/node/environment.rb', line 260

def module(name)
  modules.find {|mod| mod.name == name}
end

#module_by_forge_name(forge_name) ⇒ Puppet::Module?

Locate a module instance by the full forge name (EG authorname/module)


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# File 'lib/puppet/node/environment.rb', line 270

def module_by_forge_name(forge_name)
  _, modname = forge_name.split('/')
  found_mod = self.module(modname)
  found_mod and found_mod.forge_name == forge_name ?
    found_mod :
    nil
end

#module_requirements ⇒ Hash<String, Array<Hash<String, String>>>

All module requirements for all modules in the environment modulepath

Examples:

environment.module_requirements
# => {
#   'username/amodule' => [
#     {
#       'name'    => 'username/moduledep',
#       'version' => '1.2.3',
#       'version_requirement' => '>= 1.0.0',
#     },
#     {
#       'name'    => 'username/anotherdep',
#       'version' => '4.5.6',
#       'version_requirement' => '>= 3.0.0',
#     }
#   ]
# }
#


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# File 'lib/puppet/node/environment.rb', line 385

def module_requirements
  deps = {}

  modules.each do |mod|
    next unless mod.forge_name
    deps[mod.forge_name] ||= []

    mod.dependencies and mod.dependencies.each do |mod_dep|
      dep_name = mod_dep['name'].tr('-', '/')
      (deps[dep_name] ||= []) << {
        'name'                => mod.forge_name,
        'version'             => mod.version,
        'version_requirement' => mod_dep['version_requirement']
      }
    end
  end

  deps.each do |mod, mod_deps|
    deps[mod] = mod_deps.sort_by { |d| d['name'] }
  end

  deps
end

#modulepath ⇒ Array<String>

Returns All directories present on disk in the modulepath


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# File 'lib/puppet/node/environment.rb', line 136

def modulepath
  @modulepath.find_all do |p|
    Puppet::FileSystem.directory?(p)
  end
end

#modules ⇒ Array<Puppet::Module>

Note:

If multiple modules with the same name are present they will both be added, but methods like #module and #module_by_forge_name will return the first matching entry in this list.

Note:

This value is cached so that the filesystem doesn't have to be re-enumerated every time this method is invoked, since that enumeration could be a costly operation and this method is called frequently. The cache expiry is determined by `Puppet`.

Return all modules for this environment in the order they appear in the modulepath.


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# File 'lib/puppet/node/environment.rb', line 289

def modules
  if @modules.nil?
    module_references = []
    seen_modules = {}
    modulepath.each do |path|
      Dir.entries(path).each do |name|
        next unless Puppet::Module.is_module_directory?(name, path)
        warn_about_mistaken_path(path, name)
        if not seen_modules[name]
          module_references << {:name => name, :path => File.join(path, name)}
          seen_modules[name] = true
        end
      end
    end

    @modules = module_references.collect do |reference|
      begin
        Puppet::Module.new(reference[:name], reference[:path], self)
      rescue Puppet::Module::Error => e
        Puppet.log_exception(e)
        nil
      end
    end.compact
  end
  @modules
end

#modules_by_path ⇒ Hash<String, Array<Puppet::Module>>

Note:

This method changes the current working directory while enumerating the modules. This seems rather dangerous.

Modules broken out by directory in the modulepath


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# File 'lib/puppet/node/environment.rb', line 339

def modules_by_path
  modules_by_path = {}
  modulepath.each do |path|
    if Puppet::FileSystem.exist?(path)
      Dir.chdir(path) do
        module_names = Dir.entries(path).select do |name|
          Puppet::Module.is_module_directory?(name, path)
        end
        modules_by_path[path] = module_names.sort.map do |name|
          Puppet::Module.new(name, File.join(path, name), self)
        end
      end
    else
      modules_by_path[path] = []
    end
  end
  modules_by_path
end

#override_from_commandline(settings) ⇒ Puppet::Node::Environment

Creates a new Puppet::Node::Environment instance, overriding :manifest, :modulepath, or :config_version from the passed settings if they were originally set from the commandline, or returns self if there is nothing to override.


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# File 'lib/puppet/node/environment.rb', line 101

def override_from_commandline(settings)
  overrides = {}

  if settings.set_by_cli?(:modulepath)
    overrides[:modulepath] = self.class.split_path(settings.value(:modulepath))
  end

  if settings.set_by_cli?(:config_version)
    overrides[:config_version] = settings.value(:config_version)
  end

  if settings.set_by_cli?(:manifest)
    overrides[:manifest] = settings.value(:manifest)
  end

  overrides.empty? ?
    self :
    self.override_with(overrides)
end

#override_with(env_params) ⇒ Puppet::Node::Environment

Creates a new Puppet::Node::Environment instance, overriding any of the passed parameters.


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# File 'lib/puppet/node/environment.rb', line 86

def override_with(env_params)
  return self.class.create(name,
                    env_params[:modulepath] || modulepath,
                    env_params[:manifest] || manifest,
                    env_params[:config_version] || config_version)
end

#rich_data? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Checks if this environment permits use of rich data types in the catalog


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# File 'lib/puppet/node/environment.rb', line 214

def rich_data?
  if @rich_data.nil?
    environment_conf = Puppet.lookup(:environments).get_conf(name)
    @rich_data = (environment_conf.nil? ? Puppet[:rich_data] : environment_conf.rich_data)
  end
  @rich_data
end

#static_catalogs? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'lib/puppet/node/environment.rb', line 184

def static_catalogs?
  if @static_catalogs.nil?
    environment_conf = Puppet.lookup(:environments).get_conf(name)
    @static_catalogs = (environment_conf.nil? ? Puppet[:static_catalogs] : environment_conf.static_catalogs)
  end
  @static_catalogs
end

#to_s ⇒ String

Returns The stringified value of the `name` instance variable


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# File 'lib/puppet/node/environment.rb', line 446

def to_s
  name.to_s
end

#to_sym ⇒ Symbol

Note:

the `name` instance variable is a Symbol, but this casts the value to a String and then converts it back into a Symbol which will needlessly create an object that needs to be garbage collected

Returns The `name` value, cast to a string, then cast to a symbol.


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# File 'lib/puppet/node/environment.rb', line 462

def to_sym
  to_s.to_sym
end

#to_yaml ⇒ String

Return the name of the environment as a string interpretation of the object


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# File 'lib/puppet/node/environment.rb', line 440

def to_yaml
  to_s.to_yaml
end

#validation_errors ⇒ Array<String>

Checks the environment and settings for any conflicts


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# File 'lib/puppet/node/environment.rb', line 203

def validation_errors
  errors = []
  if conflicting_manifest_settings?
    errors << _("The 'disable_per_environment_manifest' setting is true, and the '%{env_name}' environment has an environment.conf manifest that conflicts with the 'default_manifest' setting.") % { env_name: name }
  end
  errors
end

#warn_about_mistaken_path(path, name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Generate a warning if the given directory in a module path entry is named `lib`.


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# File 'lib/puppet/node/environment.rb', line 322

def warn_about_mistaken_path(path, name)
  if name == "lib"
    Puppet.debug("Warning: Found directory named 'lib' in module path ('#{path}/lib'); unless " +
        "you are expecting to load a module named 'lib', your module path may be set " +
        "incorrectly.")
  end
end

#with_text_domain ⇒ Object

Loads module translations for the current environment once for the lifetime of the environment. Execute a block in the context of that translation domain.


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# File 'lib/puppet/node/environment.rb', line 412

def with_text_domain
  return yield if Puppet[:disable_i18n]

  if @text_domain.nil?
    @text_domain = @name
    Puppet::GettextConfig.reset_text_domain(@text_domain)
    Puppet::ModuleTranslations.load_from_modulepath(modules)
  else
    Puppet::GettextConfig.use_text_domain(@text_domain)
  end

  yield
ensure
  # Is a noop if disable_i18n is true
  Puppet::GettextConfig.clear_text_domain
end