Module: Entitlements

Includes:
Contracts::Core
Defined in:
lib/entitlements.rb,
lib/entitlements.rb,
lib/entitlements/cli.rb,
lib/entitlements/extras.rb,
lib/entitlements/plugins.rb,
lib/entitlements/rule/base.rb,
lib/entitlements/util/util.rb,
lib/entitlements/data/groups.rb,
lib/entitlements/data/people.rb,
lib/entitlements/extras/base.rb,
lib/entitlements/util/mirror.rb,
lib/entitlements/auditor/base.rb,
lib/entitlements/models/group.rb,
lib/entitlements/service/ldap.rb,
lib/entitlements/models/action.rb,
lib/entitlements/models/person.rb,
lib/entitlements/plugins/dummy.rb,
lib/entitlements/util/override.rb,
lib/entitlements/data/people/ldap.rb,
lib/entitlements/data/people/yaml.rb,
lib/entitlements/data/people/dummy.rb,
lib/entitlements/data/groups/cached.rb,
lib/entitlements/plugins/posix_group.rb,
lib/entitlements/data/people/combined.rb,
lib/entitlements/extras/orgchart/base.rb,
lib/entitlements/backend/base_provider.rb,
lib/entitlements/backend/ldap/provider.rb,
lib/entitlements/extras/orgchart/logic.rb,
lib/entitlements/data/groups/calculated.rb,
lib/entitlements/extras/ldap_group/base.rb,
lib/entitlements/plugins/group_of_names.rb,
lib/entitlements/backend/base_controller.rb,
lib/entitlements/backend/ldap/controller.rb,
lib/entitlements/backend/dummy/controller.rb,
lib/entitlements/data/groups/calculated/base.rb,
lib/entitlements/data/groups/calculated/ruby.rb,
lib/entitlements/data/groups/calculated/text.rb,
lib/entitlements/data/groups/calculated/yaml.rb,
lib/entitlements/backend/member_of/controller.rb,
lib/entitlements/extras/orgchart/person_methods.rb,
lib/entitlements/extras/orgchart/rules/management.rb,
lib/entitlements/data/groups/calculated/rules/base.rb,
lib/entitlements/data/groups/calculated/rules/group.rb,
lib/entitlements/extras/ldap_group/rules/ldap_group.rb,
lib/entitlements/data/groups/calculated/filters/base.rb,
lib/entitlements/extras/orgchart/rules/direct_report.rb,
lib/entitlements/data/groups/calculated/modifiers/base.rb,
lib/entitlements/data/groups/calculated/rules/username.rb,
lib/entitlements/data/groups/calculated/modifiers/expiration.rb,
lib/entitlements/data/groups/calculated/filters/member_of_group.rb,
lib/entitlements/extras/ldap_group/filters/member_of_ldap_group.rb

Overview

Filter class to remove members of a particular LDAP group.

Defined Under Namespace

Modules: Extras Classes: Auditor, Backend, Cli, Data, ERB, Models, Plugins, Rule, Service, Util

Constant Summary collapse

C = 
::Contracts
IGNORED_FILES = 
Set.new(%w[README.md PR_TEMPLATE.md])

Class Method Summary collapse

Methods included from Contracts::Core

common, extended, included

Class Method Details

.auditors ⇒ Object 



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# File 'lib/entitlements.rb', line 317

def self.auditors
  @auditors ||= begin
    if Entitlements.config.key?("auditors")
      Entitlements.config["auditors"].map do |auditor|
        unless auditor.is_a?(Hash)
          # :nocov:
          raise ArgumentError, "Configuration error: Expected auditor to be a hash, got #{auditor.inspect}!"
          # :nocov:
        end

        auditor_class = auditor.fetch("auditor_class")

        begin
          clazz = Kernel.const_get("Entitlements::Auditor::#{auditor_class}")
        rescue NameError
          raise ArgumentError, "Auditor class #{auditor_class.inspect} is invalid"
        end

        clazz.new(logger, auditor)
      end
    else
      []
    end
  end
end

.backends ⇒ Object 



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# File 'lib/entitlements.rb', line 215

def self.backends
  @backends || {}
end

.cache ⇒ Object

This is a global cache for the whole run of entitlements. To avoid passing objects around, since Entitlements by its nature is a run-once-upon-demand application.

Takes no arguments.

Returns a Hash that contains the cache.

Note: Since this is hit a lot, to avoid the performance penalty, Contracts is not used here. :nocov:



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# File 'lib/entitlements.rb', line 585

def self.cache
  @cache ||= {
    calculated: {},
    file_objects: {}
  }
end

.calculate ⇒ Object 



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# File 'lib/entitlements.rb', line 366

def self.calculate
  # Load extras that are configured.
  Entitlements.load_extras if Entitlements.config.key?("extras")

  # Pre-fetch people from configured people data sources.
  Entitlements.prefetch_people

  # Register filters that are configured.
  Entitlements.register_filters if Entitlements.config.key?("filters")

  # Keep track of the total change count.
  cache[:change_count] = 0

  max_parallelism = Entitlements.config["max_parallelism"] || 1

  # Calculate old and new membership in each group.
  thread_pool = Concurrent::FixedThreadPool.new(max_parallelism)
  logger.debug("Begin prefetch and validate for all groups")
  prep_start = Time.now
  futures = Entitlements.child_classes.map do |group_name, obj|
    Concurrent::Future.execute({ executor: thread_pool }) do
      group_start = Time.now
      logger.debug("Begin prefetch and validate for #{group_name}")
      obj.prefetch
      obj.validate
      logger.debug("Finished prefetch and validate for #{group_name} in #{Time.now - group_start}")
    end
  end

  futures.each(&:value!)
  logger.debug("Finished all prefetch and validate in #{Time.now - prep_start}")

  logger.debug("Begin all calculations")
  calc_start = Time.now
  actions = []
  Entitlements.child_classes.map do |group_name, obj|
    obj.calculate
    if obj.change_count > 0
      logger.debug "Group #{group_name.inspect} contributes #{obj.change_count} change(s)."
      cache[:change_count] += obj.change_count
    end
    actions.concat(obj.actions)
  end
  logger.debug("Finished all calculations in #{Time.now - calc_start}")
  logger.debug("Finished all prefetch, validate, and calculation in #{Time.now - prep_start}")

  actions
end

.child_classes ⇒ Object 



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# File 'lib/entitlements.rb', line 293

def self.child_classes
  @child_classes ||= begin
    backend_obj = Entitlements.config["groups"].map do |group_name, data|
      [group_name, Entitlements.backends[data["type"]][:class].new(group_name)]
    end.compact.to_h

    # Sort first by priority, then by whether this is a mirror or not (mirrors go last), and
    # finally by the length of the OU name from shortest to longest.
    backend_obj.sort_by do |k, v|
      [
        v.priority,
        Entitlements.config["groups"][k] && Entitlements.config["groups"][k].key?("mirror") ? 1 : 0,
        k.length
      ]
    end.to_h
  end
end

.config ⇒ Object 



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# File 'lib/entitlements.rb', line 122

def self.config
  @config ||= begin
    content = ERB.render_from_hash(File.read(config_file), {})
    ::YAML.safe_load(content)
  end
end

.config=(config_hash) ⇒ Object 



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# File 'lib/entitlements.rb', line 135

def self.config=(config_hash)
  @config = config_hash
end

.config_file ⇒ Object 



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# File 'lib/entitlements.rb', line 144

def self.config_file
  @config_file || File.expand_path("../config/entitlements/config.yaml", File.dirname(__FILE__))
end

.config_file=(path) ⇒ Object 



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# File 'lib/entitlements.rb', line 153

def self.config_file=(path)
  unless File.file?(path)
    raise "Specified config file = #{path.inspect} but it does not exist!"
  end

  @config_file = path
  @config = nil
end

.config_path ⇒ Object

Get the configuration path for the groups. This is based on the relative location to the configuration file if it doesn’t start with a “/”.

Takes no arguments.

Returns a String with the config path.



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# File 'lib/entitlements.rb', line 168

def self.config_path
  return @config_path_override if @config_path_override
  base = config.fetch("configuration_path")
  return base if base.start_with?("/")
  File.expand_path(base, File.dirname(config_file))
end

.config_path=(path) ⇒ Object 



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# File 'lib/entitlements.rb', line 183

def self.config_path=(path)
  unless path.start_with?("/")
    raise ArgumentError, "Path must be absolute when setting config_path!"
  end

  unless File.directory?(path)
    raise Errno::ENOENT, "config_path #{path.inspect} is not a directory!"
  end

  @config["configuration_path"] = path if @config
  @config_path_override = path
end

.dummy_logger ⇒ Object 



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# File 'lib/entitlements.rb', line 110

def self.dummy_logger
  # :nocov:
  Logger.new(StringIO.new)
  # :nocov:
end

.execute(actions:) ⇒ Object 



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# File 'lib/entitlements.rb', line 425

def self.execute(actions:)
  # Set up auditors.
  Entitlements.auditors.each { |auditor| auditor.setup }

  # Track any raised exception to pass to the auditors.
  provider_exception = nil
  audit_exceptions = []
  successful_actions = Set.new

  # Sort the child classes by priority
  begin
    # Pre-apply changes for each class.
    Entitlements.child_classes.each do |_, obj|
      obj.preapply
    end

    # Apply changes from all actions.
    actions.each do |action|
      obj = Entitlements.child_classes.fetch(action.ou)
      obj.apply(action)
      successful_actions.add(action.dn)
    end
  rescue => e
    # Populate 'provider_exception' for the auditors and then raise the exception.
    provider_exception = e
    raise e
  ensure
    # Run the audit "commit" action for each auditor. This needs to happen despite any failures that
    # may occur when pre-applying or applying actions, because actions might have been applied despite
    # any failures raised. Run each audit, even if one fails, and batch up the exceptions for the end.
    # If there was an original exception from one of the providers, this block will be executed and then
    # that original exception will be raised.
    if Entitlements.auditors.any?
      logger.debug "Recording data to #{Entitlements.auditors.size} audit provider(s)"
      Entitlements.auditors.each do |audit|
        begin
          audit.commit(
            actions: actions,
            successful_actions: successful_actions,
            provider_exception: provider_exception
          )
          logger.debug "Audit #{audit.description} completed successfully"
        rescue => e
          logger.error "Audit #{audit.description} failed: #{e.class} #{e.message}"
          e.backtrace.each { |line| logger.error line }
          audit_exceptions << e
        end
      end
    end
  end

  # If we get here there were no provider exceptions. If there were audit exceptions raise them here.
  # If there were multiple exceptions we can only raise the first one, but log a message indicating this.
  return if audit_exceptions.empty?

  if audit_exceptions.size > 1
    logger.warn "There were #{audit_exceptions.size} audit exceptions. Only the first one is raised."
  end
  raise audit_exceptions.first
end

.load_extras ⇒ Object 



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# File 'lib/entitlements.rb', line 225

def self.load_extras
  Entitlements.config.fetch("extras", {}).each do |extra_name, extra_cfg|
    path = extra_cfg.key?("path") ? Entitlements::Util::Util.absolute_path(extra_cfg["path"]) : nil
    logger.debug "Loading extra #{extra_name} (path = #{path || 'default'})"
    Entitlements::Extras.load_extra(extra_name, path)
  end
  nil
end

.logger ⇒ Object

Global logger for this run of Entitlements.

Takes no arguments.

Returns a Logger. :nocov:



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# File 'lib/entitlements.rb', line 349

def self.logger
  @logger ||= dummy_logger
end

.person_extra_methods ⇒ Object 



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# File 'lib/entitlements.rb', line 283

def self.person_extra_methods
  @person_extra_methods
end

.prefetch_people ⇒ Object 



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# File 'lib/entitlements.rb', line 550

def self.prefetch_people
  Entitlements.cache[:people_obj] ||= begin
    people_data_sources = Entitlements.config.fetch("people", [])
    if people_data_sources.empty?
      raise ArgumentError, "At least one data source for people must be specified in the Entitlements configuration!"
    end

    # TODO: In the future, have separate data sources per group.
    people_data_source_name = Entitlements.config.fetch("people_data_source", "")
    if people_data_source_name.empty?
      raise ArgumentError, "The Entitlements configuration must define a people_data_source!"
    end
    unless people_data_sources.key?(people_data_source_name)
      raise ArgumentError, "The people_data_source #{people_data_source_name.inspect} is invalid!"
    end

    objects = people_data_sources.map do |ds_name, ds_config|
      people_obj = Entitlements::Data::People.new_from_config(ds_config)
      people_obj.read
      [ds_name, people_obj]
    end.to_h

    objects.fetch(people_data_source_name)
  end
end

.record_loaded_extra(clazz) ⇒ Object 



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# File 'lib/entitlements.rb', line 240

def self.record_loaded_extra(clazz)
  @extras_loaded ||= Set.new
  @extras_loaded.add(clazz)
end

.register_backend(identifier, clazz, priority) ⇒ Object 



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# File 'lib/entitlements.rb', line 204

def self.register_backend(identifier, clazz, priority)
  @backends ||= {}
  @backends[identifier] = { class: clazz, priority: priority }
end

.register_filters ⇒ Object 



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# File 'lib/entitlements.rb', line 251

def self.register_filters
  Entitlements.config.fetch("filters", {}).each do |filter_name, filter_cfg|
    filter_class = filter_cfg.fetch("class")
    filter_clazz = Kernel.const_get(filter_class)
    filter_config = filter_cfg.fetch("config", {})

    logger.debug "Registering filter #{filter_name} (class: #{filter_class})"
    Entitlements::Data::Groups::Calculated.register_filter(filter_name, { class: filter_clazz, config: filter_config })
  end
  nil
end

.register_person_extra_method(method_name, method_class_ref) ⇒ Object 



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# File 'lib/entitlements.rb', line 273

def self.register_person_extra_method(method_name, method_class_ref)
  @person_extra_methods[method_name.to_sym] = method_class_ref
end

.reset! ⇒ Object

Reset all Entitlements state

Takes no arguments



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# File 'lib/entitlements.rb', line 86

def self.reset!
  @cache = nil
  @child_classes = nil
  @config = nil
  @config_file = nil
  @config_path_override = nil
  @person_extra_methods = {}

  reset_extras!
  Entitlements::Data::Groups::Calculated.reset!
end

.reset_extras! ⇒ Object 



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# File 'lib/entitlements.rb', line 98

def self.reset_extras!
  extras_loaded = @extras_loaded
  if extras_loaded
    extras_loaded.each { |clazz| clazz.reset! if clazz.respond_to?(:reset!) }
  end
  @extras_loaded = nil
end

.set_logger(logger) ⇒ Object 



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# File 'lib/entitlements.rb', line 353

def self.set_logger(logger)
  @logger = logger
end

.validate_configuration_file! ⇒ Object 



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# File 'lib/entitlements.rb', line 492

def self.validate_configuration_file!
  # Required attributes
  spec = {
    "configuration_path" => { required: true, type: String },
    "backends"           => { required: false, type: Hash },
    "people"             => { required: true, type: Hash },
    "people_data_source"  => { required: true, type: String },
    "groups"             => { required: true, type: Hash },
    "auditors"           => { required: false, type: Array },
    "filters"            => { required: false, type: Hash },
    "extras"             => { required: false, type: Hash },
    "max_parallelism"    => { required: false, type: Integer },
  }

  Entitlements::Util::Util.validate_attr!(spec, Entitlements.config, "Entitlements configuration file")

  # Make sure each group has a valid type, and then forward the validator to the child class.
  # If a named backend is chosen, merge the parameters from the backend with the parameters given
  # for the class configuration, and then remove all indication that a backend was used.
  Entitlements.config["groups"].each do |key, data|
    if data.key?("backend")
      unless Entitlements.config["backends"] && Entitlements.config["backends"].key?(data["backend"])
        raise "Entitlements configuration group #{key.inspect} references non-existing backend #{data['backend'].inspect}!"
      end

      backend = Entitlements.config["backends"].fetch(data["backend"])
      unless backend.key?("type")
        raise "Entitlements backend #{data['backend'].inspect} is missing a type!"
      end

      # Priority in the merge is given to the specific OU configured. Backend data is filled
      # in only as default values when not otherwise defined.
      Entitlements.config["groups"][key] = backend.merge(data)
      Entitlements.config["groups"][key].delete("backend")
      data = Entitlements.config["groups"][key]
    end

    unless data["type"].is_a?(String)
      raise "Entitlements configuration group #{key.inspect} does not properly declare a type!"
    end

    unless Entitlements.backends.key?(data["type"])
      raise "Entitlements configuration group #{key.inspect} has invalid type (#{data['type'].inspect})"
    end
  end

  # Good if nothing is raised by here.
  nil
end