Class: Chef::Provider::Group::Groupmod

Inherits:
Chef::Provider::Group show all
Defined in:
lib/chef/provider/group/groupmod.rb

Instance Attribute Summary

Attributes inherited from Chef::Provider::Group

#change_desc, #group_exists

Attributes inherited from Chef::Provider

#action, #cookbook_name, #current_resource, #new_resource, #recipe_name, #run_context

Instance Method Summary collapse

Methods inherited from Chef::Provider::Group

#action_create, #action_manage, #action_modify, #action_remove, #compare_group, #define_resource_requirements, #has_current_group_member?, #initialize, #validate_member!

Methods included from Mixin::ShellOut

#a_to_s, #clean_array, #shell_out, #shell_out!, #shell_out_compact, #shell_out_compact!, #shell_out_compact_timeout, #shell_out_compact_timeout!, #shell_out_with_systems_locale, #shell_out_with_systems_locale!

Methods included from Mixin::PathSanity

#enforce_path_sanity, #sanitized_path

Methods inherited from Chef::Provider

action, #action_nothing, #check_resource_semantics!, #cleanup_after_converge, #compile_and_converge_action, #converge_by, #converge_if_changed, #define_resource_requirements, #events, include_resource_dsl?, include_resource_dsl_module, #initialize, #node, #process_resource_requirements, provides, provides?, #requirements, #resource_collection, #resource_updated?, #run_action, #set_updated_status, supports?, use_inline_resources, #whyrun_mode?, #whyrun_supported?

Methods included from Mixin::Provides

#provided_as, #provides, #provides?

Methods included from Mixin::DescendantsTracker

#descendants, descendants, #direct_descendants, direct_descendants, #find_descendants_by_name, find_descendants_by_name, #inherited, store_inherited

Methods included from Mixin::LazyModuleInclude

#descendants, #include, #included

Methods included from Mixin::NotifyingBlock

#notifying_block, #subcontext_block

Methods included from DSL::DeclareResource

#build_resource, #declare_resource, #delete_resource, #delete_resource!, #edit_resource, #edit_resource!, #find_resource, #find_resource!, #with_run_context

Methods included from Mixin::PowershellOut

#powershell_out, #powershell_out!

Methods included from Mixin::WindowsArchitectureHelper

#assert_valid_windows_architecture!, #disable_wow64_file_redirection, #forced_32bit_override_required?, #is_i386_process_on_x86_64_windows?, #node_supports_windows_architecture?, #node_windows_architecture, #restore_wow64_file_redirection, #valid_windows_architecture?, #with_os_architecture, #wow64_architecture_override_required?, #wow64_directory

Methods included from DSL::PlatformIntrospection

#docker?, #platform?, #platform_family?, #value_for_platform, #value_for_platform_family

Constructor Details

This class inherits a constructor from Chef::Provider::Group

Instance Method Details

#add_group_members(members) ⇒ Object

Adds a list of usernames to the group using user mod


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# File 'lib/chef/provider/group/groupmod.rb', line 86

def add_group_members(members)
  Chef::Log.debug("#{new_resource} adding members #{members.join(', ')}") unless members.empty?
  members.each do |user|
    shell_out_compact!("user", "mod", "-G", new_resource.group_name, user)
  end
end

#create_groupObject

Create the group


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# File 'lib/chef/provider/group/groupmod.rb', line 34

def create_group
  shell_out_compact!("group", "add", set_options)

  add_group_members(new_resource.members)
end

#load_current_resourceObject


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# File 'lib/chef/provider/group/groupmod.rb', line 26

def load_current_resource
  super
  %w{group user}.each do |binary|
    raise Chef::Exceptions::Group, "Could not find binary /usr/sbin/#{binary} for #{new_resource}" unless ::File.exist?("/usr/sbin/#{binary}")
  end
end

#manage_groupObject

Manage the group when it already exists


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# File 'lib/chef/provider/group/groupmod.rb', line 41

def manage_group
  if new_resource.append
    members_to_be_added = [ ]
    if new_resource.excluded_members && !new_resource.excluded_members.empty?
      # First find out if any member needs to be removed
      members_to_be_removed = [ ]
      new_resource.excluded_members.each do |member|
        members_to_be_removed << member if current_resource.members.include?(member)
      end

      unless members_to_be_removed.empty?
        # We are using a magic trick to remove the groups.
        reset_group_membership

        # Capture the members we need to add in
        # members_to_be_added to be added later on.
        current_resource.members.each do |member|
          members_to_be_added << member unless members_to_be_removed.include?(member)
        end
      end
    end

    if new_resource.members && !new_resource.members.empty?
      new_resource.members.each do |member|
        members_to_be_added << member unless current_resource.members.include?(member)
      end
    end

    Chef::Log.debug("#{new_resource} not changing group members, the group has no members to add") if members_to_be_added.empty?

    add_group_members(members_to_be_added)
  else
    # We are resetting the members of a group so use the same trick
    reset_group_membership
    Chef::Log.debug("#{new_resource} setting group members to: none") if new_resource.members.empty?
    add_group_members(new_resource.members)
  end
end

#remove_groupObject

Remove the group


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# File 'lib/chef/provider/group/groupmod.rb', line 81

def remove_group
  shell_out_compact!("group", "del", new_resource.group_name)
end

#reset_group_membershipObject

This is tricky, but works: rename the existing group to "_bak", create a new group with the same GID and "", then set correct members on that group


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# File 'lib/chef/provider/group/groupmod.rb', line 96

def reset_group_membership
  shell_out_compact!("group", "mod", "-n", "#{new_resource.group_name}_bak", new_resource.group_name)

  shell_out_compact!("group", "add", set_options(overwrite_gid: true))

  shell_out_compact!("group", "del", "#{new_resource.group_name}_bak")
end

#set_options(overwrite_gid = false) ⇒ Object

Little bit of magic as per Adam's useradd provider to pull and assign the command line flags

==== Returns :: A string containing the option and then the quoted value


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# File 'lib/chef/provider/group/groupmod.rb', line 108

def set_options(overwrite_gid = false)
  opts = []
  if overwrite_gid || new_resource.gid && (current_resource.gid != new_resource.gid)
    opts << "-g"
    opts << new_resource.gid
  end
  if overwrite_gid
    opts << "-o"
  end
  opts << new_resource.group_name
  opts
end