Class: Puppet::Indirector::Terminus

Inherits:
Object
  • Object
show all
Extended by:
Util::Docs, Util::InstanceLoader
Defined in:
lib/puppet/indirector/terminus.rb

Overview

A simple class that can function as the base class for indirected types.

Constant Summary

Constants included from Util

Util::AbsolutePathPosix, Util::AbsolutePathWindows, Util::DEFAULT_POSIX_MODE, Util::DEFAULT_WINDOWS_MODE, Util::RFC_3986_URI_REGEX

Constants included from Util::POSIX

Util::POSIX::LOCALE_ENV_VARS, Util::POSIX::USER_ENV_VARS

Constants included from Util::SymbolicFileMode

Util::SymbolicFileMode::SetGIDBit, Util::SymbolicFileMode::SetUIDBit, Util::SymbolicFileMode::StickyBit, Util::SymbolicFileMode::SymbolicMode, Util::SymbolicFileMode::SymbolicSpecialToBit

Constants included from Util::Docs

Util::Docs::HEADER_LEVELS

Class Attribute Summary collapse

Attributes included from Util::Docs

#doc, #nodoc

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Util::InstanceLoader

instance_hash, instance_load, instance_loader, instance_loading?, loaded_instance, loaded_instances

Methods included from Util

absolute_path?, benchmark, chuser, clear_environment, default_env, deterministic_rand, deterministic_rand_int, exit_on_fail, get_env, get_environment, logmethods, merge_environment, path_to_uri, pretty_backtrace, replace_file, safe_posix_fork, set_env, symbolizehash, thinmark, uri_encode, uri_query_encode, uri_to_path, which, withenv, withumask

Methods included from Util::POSIX

#get_posix_field, #gid, groups_of, #idfield, #methodbyid, #methodbyname, #search_posix_field, #uid

Methods included from Util::SymbolicFileMode

#normalize_symbolic_mode, #symbolic_mode_to_int, #valid_symbolic_mode?

Methods included from Util::Docs

desc, dochook, doctable, markdown_definitionlist, markdown_header, nodoc?, pad, scrub

Constructor Details

#initialize ⇒ Terminus

Returns a new instance of Terminus.

Raises:



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# File 'lib/puppet/indirector/terminus.rb', line 131

def initialize
  raise Puppet::DevError, _("Cannot create instances of abstract terminus types") if self.class.abstract_terminus?
end

Class Attribute Details

.abstract_terminus ⇒ Object (readonly)

Returns the value of attribute abstract_terminus.



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# File 'lib/puppet/indirector/terminus.rb', line 15

def abstract_terminus
  @abstract_terminus
end

.indirection ⇒ Object

Returns the value of attribute indirection.



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# File 'lib/puppet/indirector/terminus.rb', line 15

def indirection
  @indirection
end

.name ⇒ Object

Returns the value of attribute name.



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# File 'lib/puppet/indirector/terminus.rb', line 14

def name
  @name
end

.terminus_type ⇒ Object

Returns the value of attribute terminus_type.



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# File 'lib/puppet/indirector/terminus.rb', line 14

def terminus_type
  @terminus_type
end

Class Method Details

.abstract_terminus? ⇒ Boolean

Are we an abstract terminus type, rather than an instance with an associated indirection?

Returns:

  • (Boolean) 


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# File 'lib/puppet/indirector/terminus.rb', line 19

def abstract_terminus?
  abstract_terminus
end

.const2name(const) ⇒ Object

Convert a constant to a short name.



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# File 'lib/puppet/indirector/terminus.rb', line 24

def const2name(const)
  const.sub(/^[A-Z]/) { |i| i.downcase }.gsub(/[A-Z]/) { |i| "_#{i.downcase}" }.intern
end

.indirection_name ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 39

def indirection_name
  @indirection.name
end

.inherited(subclass) ⇒ Object

Register our subclass with the appropriate indirection. This follows the convention that our terminus is named after the indirection.



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# File 'lib/puppet/indirector/terminus.rb', line 46

def inherited(subclass)
  longname = subclass.to_s
  if longname =~ /#<Class/
    raise Puppet::DevError, _("Terminus subclasses must have associated constants")
  end
  names = longname.split("::")

  # Convert everything to a lower-case symbol, converting camelcase to underscore word separation.
  name = names.pop.sub(/^[A-Z]/) { |i| i.downcase }.gsub(/[A-Z]/) { |i| "_#{i.downcase}" }.intern

  subclass.name = name

  # Short-circuit the abstract types, which are those that directly subclass
  # the Terminus class.
  if self == Puppet::Indirector::Terminus
    subclass.mark_as_abstract_terminus
    return
  end

  # Set the terminus type to be the name of the abstract terminus type.
  # Yay, class/instance confusion.
  subclass.terminus_type = self.name

  # This subclass is specifically associated with an indirection.
  raise("Invalid name #{longname}") unless names.length > 0
  processed_name = names.pop.sub(/^[A-Z]/) { |i| i.downcase }.gsub(/[A-Z]/) { |i| "_#{i.downcase}" }

  if processed_name.empty?
    raise Puppet::DevError, _("Could not discern indirection model from class constant")
  end

  # This will throw an exception if the indirection instance cannot be found.
  # Do this last, because it also registers the terminus type with the indirection,
  # which needs the above information.
  subclass.indirection = processed_name.intern

  # And add this instance to the instance hash.
  Puppet::Indirector::Terminus.register_terminus_class(subclass)
end

.mark_as_abstract_terminus ⇒ Object

Mark that this instance is abstract.



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# File 'lib/puppet/indirector/terminus.rb', line 87

def mark_as_abstract_terminus
  @abstract_terminus = true
end

.model ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 91

def model
  indirection.model
end

.name2const(name) ⇒ Object

Convert a short name to a constant.



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# File 'lib/puppet/indirector/terminus.rb', line 96

def name2const(name)
  name.to_s.capitalize.sub(/_(.)/) { |i| $1.upcase }
end

.register_terminus_class(klass) ⇒ Object

Register a class, probably autoloaded.



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# File 'lib/puppet/indirector/terminus.rb', line 101

def register_terminus_class(klass)
  setup_instance_loading klass.indirection_name
  instance_hash(klass.indirection_name)[klass.name] = klass
end

.terminus_class(indirection_name, terminus_type) ⇒ Object

Return a terminus by name, using the autoloader.



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# File 'lib/puppet/indirector/terminus.rb', line 107

def terminus_class(indirection_name, terminus_type)
  setup_instance_loading indirection_name
  loaded_instance(indirection_name, terminus_type)
end

.terminus_classes(indirection_name) ⇒ Object

Return all terminus classes for a given indirection.



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# File 'lib/puppet/indirector/terminus.rb', line 113

def terminus_classes(indirection_name)
  setup_instance_loading indirection_name
  instance_loader(indirection_name).files_to_load(Puppet.lookup(:current_environment)).map do |file|
    File.basename(file).chomp(".rb").intern
  end
end

Instance Method Details

#allow_remote_requests? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/indirector/terminus.rb', line 143

def allow_remote_requests?
  true
end

#indirection ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 127

def indirection
  self.class.indirection
end

#model ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 135

def model
  self.class.model
end

#name ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 139

def name
  self.class.name
end

#terminus_type ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 147

def terminus_type
  self.class.terminus_type
end

#validate(request) ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 151

def validate(request)
  if request.instance
    validate_model(request)
    validate_key(request)
  end
end

#validate_key(request) ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 158

def validate_key(request)
  unless request.key == request.instance.name
    raise Puppet::Indirector::ValidationError, _("Instance name %{name} does not match requested key %{key}") % { name: request.instance.name.inspect, key: request.key.inspect }
  end
end

#validate_model(request) ⇒ Object 



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# File 'lib/puppet/indirector/terminus.rb', line 164

def validate_model(request)
  unless model === request.instance
    raise Puppet::Indirector::ValidationError, _("Invalid instance type %{klass}, expected %{model_type}") % { klass: request.instance.class.inspect, model_type: model.inspect }
  end
end