Class: Entitlements::Backend::MemberOf::Controller

Inherits:
BaseController show all
Includes:
Contracts::Core
Defined in:
lib/entitlements/backend/member_of/controller.rb

Constant Summary collapse

C = 
::Contracts

Constants inherited from BaseController

BaseController::COMMON_GROUP_CONFIG

Instance Attribute Summary

Attributes inherited from BaseController

#actions

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BaseController

#change_count, identifier, #preapply, #prefetch, #priority, register, #validate

Constructor Details

#initialize(group_name, config = nil) ⇒ Controller

Returns a new instance of Controller.



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# File 'lib/entitlements/backend/member_of/controller.rb', line 22

def initialize(group_name, config = nil)
  super

  @ldap = Entitlements::Service::LDAP.new_with_cache(
    addr: @config.fetch("ldap_uri"),
    binddn: @config.fetch("ldap_binddn"),
    bindpw: @config.fetch("ldap_bindpw"),
    ca_file: @config.fetch("ldap_ca_file", ENV["LDAP_CACERT"]),
    disable_ssl_verification: @config.fetch("ldap_disable_ssl_verification", false),
    person_dn_format: @config.fetch("person_dn_format")
  )
end

Class Method Details

.priority ⇒ Object

Controller priority and registration



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# File 'lib/entitlements/backend/member_of/controller.rb', line 8

def self.priority
  20
end

Instance Method Details

#apply(action) ⇒ Object 



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# File 'lib/entitlements/backend/member_of/controller.rb', line 93

def apply(action)
  person = action.updated
  changes = person.attribute_changes
  changes.each do |attrib, val|
    if val.nil?
      logger.debug "APPLY: Delete #{attrib} from #{person.uid}"
    else
      logger.debug "APPLY: Upsert #{attrib} to #{person.uid}"
    end
  end

  person_dn = ldap.person_dn_format.gsub("%KEY%", person.uid)
  unless ldap.modify(person_dn, changes)
    logger.warn "DID NOT APPLY: Changes to #{person.uid} failed!"
    raise "LDAP modify error on #{person_dn}!"
  end
end

#calculate ⇒ Object 



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# File 'lib/entitlements/backend/member_of/controller.rb', line 41

def calculate
  logger.debug "Calculating memberOf attributes for configured groups"

  # We need to update people attributes for each group that is calculated and tagged with an
  # attribute that needs to be updated.
  cleared = Set.new

  relevant_groups = Entitlements::Data::Groups::Calculated.all_groups.select do |ou_key, _|
    config["ou"].include?(ou_key)
  end

  unless relevant_groups.any?
    raise "memberOf emulator found no OUs matching: #{config['ou'].join(', ')}"
  end

  attribute = config["memberof_attribute"]

  relevant_groups.each do |ou_key, data|
    if cleared.add?(attribute)
      Entitlements.cache[:people_obj].read.each do |uid, _person|
        Entitlements.cache[:people_obj].read(uid)[attribute] = []
      end
    end

    data[:groups].each do |group_dn, group_data|
      group_data.member_strings.each do |member|
        Entitlements.cache[:people_obj].read(member).add(attribute, group_dn)
      end
    end
  end

  # Now to populate the actions we have to see which persons have changed attributes.
  @actions = Entitlements.cache[:people_obj].read
    .reject { |_uid, person| person.attribute_changes.empty? }
    .map do |person_uid, person|
      print_differences(person)

      Entitlements::Models::Action.new(
        person_uid,
        :none, # Convention, since entitlements doesn't (yet) create people
        person,
        group_name
      )
    end
end

#print_differences(person) ⇒ Object 



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# File 'lib/entitlements/backend/member_of/controller.rb', line 119

def print_differences(person)
  changes = person.attribute_changes
  return if changes.empty?

  plural = changes.size == 1 ? "" : "s"
  logger.info "Person #{person.uid} attribute change#{plural}:"

  changes.sort.to_h.each do |attrib, val|
    orig = person.original(attrib)
    if orig.nil?
      # Added attribute
      if val.is_a?(Array)
        logger.info ". ADD attribute #{attrib}:"
        val.each { |item| logger.info ".   + #{item}" }
      else
        logger.info ". ADD attribute #{attrib}: #{val.inspect}"
      end
    elsif val.nil?
      # Removed attribute
      if orig.is_a?(Array)
        word = orig.size == 1 ? "entry" : "entries"
        logger.info ". REMOVE attribute #{attrib}: #{orig.size} #{word}"
      else
        logger.info ". REMOVE attribute #{attrib}: #{orig.inspect}"
      end
    else
      # Modified attribute
      logger.info ". MODIFY attribute #{attrib}:"
      if val.is_a?(String) && orig.is_a?(String)
        # Simple string change
        logger.info ".  - #{orig.inspect}"
        logger.info ".  + #{val.inspect}"
      elsif val.is_a?(Array) && orig.is_a?(Array)
        # Array difference
        added = Set.new(val - orig)
        removed = Set.new(orig - val)
        combined = (added.to_a + removed.to_a)
        combined.sort.each do |item|
          sign = added.member?(item) ? "+" : "-"
          logger.info ".  #{sign} #{item.inspect}"
        end
      else
        # Data type mismatch is unexpected, so don't try to handle every possible case.
        # This should only happen if LDAP schema changes. Just dump out the data structures.
        logger.info ".  - (#{orig.class})"
        logger.info ".  + #{val.inspect}"
      end
    end
  end

  # Return nil to satisfy contract
  nil
end