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

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

Constant Summary

Constants included from Mixin::ShellOut

Mixin::ShellOut::DEPRECATED_OPTIONS

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!, #whyrun_supported?

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #output_of_command, #run_command, #run_command_and_return_stdout_stderr, #run_command_with_systems_locale

Methods included from Mixin::Command::Windows

#popen4

Methods included from Mixin::Command::Unix

#popen4

Methods included from Mixin::ShellOut

#run_command_compatible_options, #shell_out, #shell_out!, #shell_out_with_systems_locale, #shell_out_with_systems_locale!

Methods inherited from Chef::Provider

#action_nothing, #check_resource_semantics!, #cleanup_after_converge, #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 DeprecatedLWRPClass

#const_missing, #deprecated_constants, #register_deprecated_lwrp_class

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`



88
89
90
91
92
93
 
# File 'lib/chef/provider/group/groupmod.rb', line 88

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

#create_group ⇒ Object

Create the group



34
35
36
37
38
39
40
 
# File 'lib/chef/provider/group/groupmod.rb', line 34

def create_group
  command = "group add"
  command << set_options
  shell_out!(command)

  add_group_members(@new_resource.members)
end

#load_current_resource ⇒ Object 



26
27
28
29
30
31
 
# 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.exists?("/usr/sbin/#{binary}")
  end
end

#manage_group ⇒ Object

Manage the group when it already exists



43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/chef/provider/group/groupmod.rb', line 43

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 if !@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_group ⇒ Object

Remove the group



83
84
85
 
# File 'lib/chef/provider/group/groupmod.rb', line 83

def remove_group
  shell_out!("group del #{@new_resource.group_name}")
end

#reset_group_membership ⇒ Object

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



98
99
100
101
102
103
104
105
106
107
108
 
# File 'lib/chef/provider/group/groupmod.rb', line 98

def reset_group_membership
  rename = "group mod -n #{@new_resource.group_name}_bak #{@new_resource.group_name}"
  shell_out!(rename)

  create = "group add"
  create << set_options(:overwrite_gid => true)
  shell_out!(create)

  remove = "group del #{@new_resource.group_name}_bak"
  shell_out!(remove)
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

<string>

A string containing the option and then the quoted value



114
115
116
117
118
119
120
121
122
123
124
 
# File 'lib/chef/provider/group/groupmod.rb', line 114

def set_options(overwrite_gid = false)
  opts = ""
  if overwrite_gid || @new_resource.gid && (@current_resource.gid != @new_resource.gid)
    opts << " -g '#{@new_resource.gid}'"
  end
  if overwrite_gid
    opts << " -o"
  end
  opts << " #{@new_resource.group_name}"
  opts
end