Class: Chef::Resource::Execute

Inherits:
Chef::Resource show all
Defined in:
lib/chef/resource/execute.rb

Overview

Use the execute resource to execute a single command. Commands that are executed with this resource are (by their nature) not idempotent, as they are typically unique to the environment in which they are run. Use not_if and only_if to guard this resource for idempotence.

Direct Known Subclasses

Script

Constant Summary

Constants inherited from Chef::Resource

FORBIDDEN_IVARS, HIDDEN_IVARS

Instance Attribute Summary collapse

Attributes inherited from Chef::Resource

#allowed_actions, #cookbook_name, #declared_type, #default_guard_interpreter, #elapsed_time, #enclosing_provider, #params, #recipe_name, #resource_initializing, #run_context, #source_line, #updated

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Chef::Resource

action, #action, #action=, action_class, allowed_actions, allowed_actions=, #as_json, #before_notifications, #cookbook_version, #current_value, #current_value_does_not_exist!, #custom_exception_message, custom_resource?, #customize_exception, declare_action_class, #declared_key, default_action, default_action=, #defined_at, #delayed_action, #delayed_notifications, #events, from_hash, from_json, #guard_interpreter, #identity, identity_attr, identity_property, #ignore_failure, #immediate_notifications, inherited, #inspect, is_custom_resource!, json_create, load_current_value, #load_from, #lookup_provider_constant, #method_missing, #name, #node, #not_if, #notifies, #notifies_before, #notifies_delayed, #notifies_immediately, #only_if, #provider, #provider=, #provider_for_action, provides, provides?, remove_canonical_dsl, #resolve_notification_references, resource_for_node, resource_matching_short_name, #resource_name, resource_name, resource_name=, #resources, #retries, #retry_delay, #run_action, #sensitive, #should_skip?, sorted_descendants, #source_line_file, #source_line_number, state_attrs, #state_for_resource_reporter, #subscribes, #to_hash, #to_json, #to_s, #to_text, #updated?, #updated_by_last_action, #updated_by_last_action?, use_automatic_resource_name, #validate_action, #validate_resource_spec!, #value_to_text

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::ConvertToClassName

#constantize, #convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string, #normalize_snake_case_name, #snake_case_basename

Methods included from Mixin::Deprecation

#deprecated_attr, #deprecated_attr_reader, #deprecated_attr_writer, #deprecated_ivar

Methods included from Mixin::Properties

included, #property_is_set?, #reset_property

Methods included from Mixin::ParamsValidate

#lazy, #set_or_return, #validate

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 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

Methods included from DSL::RebootPending

#reboot_pending?

Methods included from DSL::RegistryHelper

#registry_data_exists?, #registry_get_subkeys, #registry_get_values, #registry_has_subkeys?, #registry_key_exists?, #registry_value_exists?

Methods included from DSL::DataQuery

#data_bag, #data_bag_item, #search

Methods included from EncryptedDataBagItem::CheckEncrypted

#encrypted?

Constructor Details

#initialize(name, run_context = nil) ⇒ Execute

Returns a new instance of Execute.



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# File 'lib/chef/resource/execute.rb', line 40

def initialize(name, run_context = nil)
  super
  @command = name
  @backup = 5
  @creates = nil
  @cwd = nil
  @environment = nil
  @group = nil
  @returns = 0
  @timeout = nil
  @user = nil
  @umask = nil
  @default_guard_interpreter = :execute
  @is_guard_interpreter = false
  @live_stream = false
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::Resource

Instance Attribute Details

#is_guard_interpreter ⇒ Object

The ResourceGuardInterpreter wraps a resource’s guards in another resource. That inner resource needs to behave differently during (for example) why_run mode, so we flag it here. For why_run mode we still want to execute the guard resource even if we are not executing the wrapping resource. Only execute resources (and subclasses) can be guard interpreters.



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# File 'lib/chef/resource/execute.rb', line 36

def is_guard_interpreter
  @is_guard_interpreter
end

Class Method Details

.guard_inherited_attributes(*inherited_attributes) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 145

def self.guard_inherited_attributes(*inherited_attributes)
  # Similar to patterns elsewhere, return attributes from this
  # class and superclasses as a form of inheritance
  ancestor_attributes = []

  if superclass.respond_to?(:guard_inherited_attributes)
    ancestor_attributes = superclass.guard_inherited_attributes
  end

  ancestor_attributes.concat(@class_inherited_attributes ? @class_inherited_attributes : []).uniq
end

.set_guard_inherited_attributes(*inherited_attributes) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 141

def self.set_guard_inherited_attributes(*inherited_attributes)
  @class_inherited_attributes = inherited_attributes
end

Instance Method Details

#after_created ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 157

def after_created
  validate_identity_platform(user, password, domain, elevated)
  identity = qualify_user(user, password, domain)
  domain(identity[:domain])
  user(identity[:user])
end

#command(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 65

def command(arg = nil)
  set_or_return(
    :command,
    arg,
    :kind_of => [ String, Array ]
  )
end

#creates(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 73

def creates(arg = nil)
  set_or_return(
    :creates,
    arg,
    :kind_of => [ String ]
  )
end

#cwd(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 81

def cwd(arg = nil)
  set_or_return(
    :cwd,
    arg,
    :kind_of => [ String ]
  )
end

#environment(arg = nil) ⇒ Object Also known as: env 



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# File 'lib/chef/resource/execute.rb', line 89

def environment(arg = nil)
  set_or_return(
    :environment,
    arg,
    :kind_of => [ Hash ]
  )
end

#group(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 99

def group(arg = nil)
  set_or_return(
    :group,
    arg,
    :kind_of => [ String, Integer ]
  )
end

#live_stream(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 107

def live_stream(arg = nil)
  set_or_return(
    :live_stream,
    arg,
    :kind_of => [ TrueClass, FalseClass ])
end

#qualify_user(specified_user, password = nil, specified_domain = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 184

def qualify_user(specified_user, password = nil, specified_domain = nil)
  domain = specified_domain
  user = specified_user

  if specified_user.nil? && ! specified_domain.nil?
    raise ArgumentError, "The domain `#{specified_domain}` was specified, but no user name was given"
  end

  # if domain is provided in both username and domain
  if specified_user && ((specified_user.include? '\\') || (specified_user.include? "@")) && specified_domain
    raise ArgumentError, "The domain is provided twice. Username: `#{specified_user}`, Domain: `#{specified_domain}`. Please specify domain only once."
  end

  if ! specified_user.nil? && specified_domain.nil?
    # Splitting username of format: Domain\Username
    domain_and_user = user.split('\\')

    if domain_and_user.length == 2
      domain = domain_and_user[0]
      user = domain_and_user[1]
    elsif domain_and_user.length == 1
      # Splitting username of format: Username@Domain
      domain_and_user = user.split("@")
      if domain_and_user.length == 2
        domain = domain_and_user[1]
        user = domain_and_user[0]
      elsif domain_and_user.length != 1
        raise ArgumentError, "The specified user name `#{user}` is not a syntactically valid user name"
      end
    end
  end

  if ( password || domain ) && user.nil?
    raise ArgumentError, "A value for `password` or `domain` was specified without specification of a value for `user`"
  end

  { domain: domain, user: user }
end

#returns(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 114

def returns(arg = nil)
  set_or_return(
    :returns,
    arg,
    :kind_of => [ Integer, Array ]
  )
end

#timeout(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 122

def timeout(arg = nil)
  set_or_return(
    :timeout,
    arg,
    :kind_of => [ Integer, Float ]
  )
end

#umask(arg = nil) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 57

def umask(arg = nil)
  set_or_return(
    :umask,
    arg,
    :kind_of => [ String, Integer ]
  )
end

#validate_identity_platform(specified_user, password = nil, specified_domain = nil, elevated = false) ⇒ Object 



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# File 'lib/chef/resource/execute.rb', line 164

def validate_identity_platform(specified_user, password = nil, specified_domain = nil, elevated = false)
  if node[:platform_family] == "windows"
    if specified_user && password.nil?
      raise ArgumentError, "A value for `password` must be specified when a value for `user` is specified on the Windows platform"
    end

    if elevated && !specified_user && !password
      raise ArgumentError, "`elevated` option should be passed only with `username` and `password`."
    end
  else
    if password || specified_domain
      raise Exceptions::UnsupportedPlatform, "Values for `domain` and `password` are only supported on the Windows platform"
    end

    if elevated
      raise Exceptions::UnsupportedPlatform, "Value for `elevated` is only supported on the Windows platform"
    end
  end
end