Class: SparkleFormation

Inherits:
Object
  • Object
show all
Extended by:
Utils::AnimalStrings, Utils::TypeCheckers
Includes:
Bogo::Memoization, Utils::AnimalStrings
Defined in:
lib/sparkle_formation.rb,
lib/sparkle_formation/error.rb,
lib/sparkle_formation/utils.rb,
lib/sparkle_formation/sparkle.rb,
lib/sparkle_formation/version.rb,
lib/sparkle_formation/provider.rb,
lib/sparkle_formation/audit_log.rb,
lib/sparkle_formation/resources.rb,
lib/sparkle_formation/composition.rb,
lib/sparkle_formation/translation.rb,
lib/sparkle_formation/provider/aws.rb,
lib/sparkle_formation/provider/heat.rb,
lib/sparkle_formation/resources/aws.rb,
lib/sparkle_formation/provider/azure.rb,
lib/sparkle_formation/resources/heat.rb,
lib/sparkle_formation/sparkle_struct.rb,
lib/sparkle_formation/function_struct.rb,
lib/sparkle_formation/provider/google.rb,
lib/sparkle_formation/resources/azure.rb,
lib/sparkle_formation/resources/google.rb,
lib/sparkle_formation/translation/heat.rb,
lib/sparkle_formation/sparkle_attribute.rb,
lib/sparkle_formation/sparkle_formation.rb,
lib/sparkle_formation/provider/terraform.rb,
lib/sparkle_formation/sparkle_collection.rb,
lib/sparkle_formation/resources/rackspace.rb,
lib/sparkle_formation/resources/terraform.rb,
lib/sparkle_formation/sparkle_attribute/aws.rb,
lib/sparkle_formation/translation/rackspace.rb,
lib/sparkle_formation/sparkle_attribute/heat.rb,
lib/sparkle_formation/sparkle_attribute/azure.rb,
lib/sparkle_formation/sparkle_attribute/google.rb,
lib/sparkle_formation/sparkle_collection/rainbow.rb,
lib/sparkle_formation/sparkle_attribute/rackspace.rb,
lib/sparkle_formation/sparkle_attribute/terraform.rb

Overview

Formation container

Defined Under Namespace

Modules: Provider, SparkleAttribute, Utils Classes: AuditLog, AzureVariableStruct, Cache, Composition, Error, FunctionStruct, GoogleStruct, JinjaExpressionStruct, JinjaStatementStruct, Registry, Resources, Sparkle, SparkleCollection, SparkleStruct, TerraformStruct, Translation

Constant Summary collapse

SparklePack =

Alias for interfacing naming

Sparkle
VERSION =

Current library version

Gem::Version.new("3.0.38")
IGNORE_DIRECTORIES =

Returns directory names to ignore

Returns:

  • (Array<String>) —

    directory names to ignore

[
  "components",
  "dynamics",
  "registry",
]
SPARKLEFORMATION_ROOT_LIBRARY =

Returns path to root of this library

Returns:

  • (String) —

    path to root of this library

File.dirname(File.dirname(File.dirname(__FILE__)))
DEFAULT_STACK_RESOURCE =

Returns default stack resource name

Returns:

  • (String) —

    default stack resource name

"AWS::CloudFormation::Stack"
VALID_STACK_RESOURCES =

Returns collection of valid stack resource types

Returns:

  • (Array<String>) —

    collection of valid stack resource types

[DEFAULT_STACK_RESOURCE]
PROVIDER_MAPPINGS =

Returns name mappings for providers used in lookups (resources/sparkles)

Returns:

  • (Hash) —

    name mappings for providers used in lookups (resources/sparkles)

Smash.new(
  :open_stack => :heat,
).freeze
ALLOWED_GENERATION_PARAMETERS =

Attributes allowed for generation parameter definitions

[
  "type", "default", "description", "multiple", "prompt_when_nested",
  "allowed_values", "allowed_pattern", "max_length", "min_length",
  "max_value", "min_value",
]
VALID_GENERATION_PARAMETER_TYPES =

Allowed data types for parameters

["String", "Number", "Complex"]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}) { ... } ⇒ SparkleFormation

Create new instance

Parameters:

  • name (String, Symbol) —

    name of formation

  • options (Hash) (defaults to: {}) —

    options

Options Hash (options):

  • :sparkle_path (String) —

    custom base path

  • :components_directory (String) —

    custom components path

  • :dynamics_directory (String) —

    custom dynamics path

  • :registry_directory (String) —

    custom registry path

  • :parameters (Hash) —

    parameters for stack generation

  • :disable_aws_builtins (Truthy, Falsey) —

    do not load builtins

Yields:

  • base context



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 471

def initialize(name, options = {}, &base_block)
  @name = name.to_sym
  @component_paths = []
  if options[:sparkle_collection]
    @sparkle = options[:sparkle_collection]
    if options[:sparkle]
      @sparkle.add_sparkle(options[:sparkle])
    end
  else
    @sparkle = SparkleCollection.new
    if options[:sparkle]
      @sparkle.set_root(options[:sparkle])
    else
      @sparkle.set_root(
        Sparkle.new(
          Smash.new.tap { |h|
            s_path = options.fetch(:sparkle_path,
                                   self.class.custom_paths[:sparkle_path])
            if s_path
              h[:root] = s_path
            else
              h[:root] = :none
            end
          }
        )
      )
    end
  end
  self.provider = options.fetch(:provider, @parent ? @parent.provider : :aws)
  if provider == :aws || !options[:disable_aws_builtins]
    require "sparkle_formation/aws"
  end
  @parameters = set_generation_parameters!(
    options.fetch(:compile_time_parameters,
                  options.fetch(:parameters, {}))
  )
  @stack_resource_types = [
    stack_resource_type,
    *options.fetch(:stack_resource_types, []),
  ].compact.uniq
  @blacklisted_templates = [name]
  @composition = Composition.new(self)
  @parent = options[:parent]
  @seed = Smash.new(
    :inherit => options[:inherit],
    :layering => options[:layering],
  )
  if base_block
    load_block(base_block)
  end
  @audit_log = AuditLog.new
  @compiled = nil
end

Instance Attribute Details

#audit_log ⇒ AuditLog

Returns records of template composition

Returns:

  • (AuditLog) —

    records of template composition



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 428

def audit_log
  @audit_log
end

#blacklisted_templates ⇒ Array<String> (readonly)

Returns black listed templates

Returns:

  • (Array<String>) —

    black listed templates



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 456

def blacklisted_templates
  @blacklisted_templates
end

#compile_state ⇒ Hash

Returns state hash for compile time parameters

Returns:

  • (Hash) —

    state hash for compile time parameters



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 448

def compile_state
  @compile_state
end

#components_directory ⇒ String (readonly)

Returns components path

Returns:

  • (String) —

    components path



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 436

def components_directory
  @components_directory
end

#composition ⇒ Composition (readonly)

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 458

def composition
  @composition
end

#dynamics_directory ⇒ String (readonly)

Returns dynamics path

Returns:

  • (String) —

    dynamics path



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 438

def dynamics_directory
  @dynamics_directory
end

#name ⇒ Symbol

Returns name of formation

Returns:

  • (Symbol) —

    name of formation



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 430

def name
  @name
end

#parameters ⇒ Hash (readonly)

Returns parameters for stack generation

Returns:

  • (Hash) —

    parameters for stack generation



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 442

def parameters
  @parameters
end

#parent ⇒ SparkleFormation

Returns parent stack

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 444

def parent
  @parent
end

#provider ⇒ Symbol

Returns target provider

Returns:

  • (Symbol) —

    target provider



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 450

def provider
  @provider
end

#provider_resources ⇒ Class (readonly)

Returns Provider resources

Returns:

  • (Class) —

    Provider resources



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 452

def provider_resources
  @provider_resources
end

#registry_directory ⇒ String (readonly)

Returns registry path

Returns:

  • (String) —

    registry path



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 440

def registry_directory
  @registry_directory
end

#sparkle ⇒ Sparkle (readonly)

Returns parts store

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 432

def sparkle
  @sparkle
end

#sparkle_path ⇒ String (readonly)

Returns base path

Returns:

  • (String) —

    base path



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 434

def sparkle_path
  @sparkle_path
end

#stack_resource_types ⇒ Array<String> (readonly)

Returns valid stack resource types

Returns:

  • (Array<String>) —

    valid stack resource types



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 446

def stack_resource_types
  @stack_resource_types
end

#template_path ⇒ String

Returns local path to template

Returns:

  • (String) —

    local path to template



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 454

def template_path
  @template_path
end

Class Method Details

.__t_check(val, types) ⇒ NilClass Originally defined in module Utils::TypeCheckers

Validate given value is type defined within valid types

Parameters:

  • val (Object) —

    value

  • types (Class, Array<Class>) —

    valid types

Returns:

  • (NilClass)

Raises:

  • (TypeError)

.__t_hashish(val) ⇒ NilClass Originally defined in module Utils::TypeCheckers

Validate given value is a Hash type

Returns:

  • (NilClass)

Raises:

  • (TypeError)

.__t_stringish(val) ⇒ NilClass Originally defined in module Utils::TypeCheckers

Validate given value is String or Symbol type

Returns:

  • (NilClass)

Raises:

  • (TypeError)

.build(base = nil) { ... } ⇒ SparkleStruct

Execute given block within struct context

Parameters:

Yields:

  • block to execute

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 125

def build(base = nil, &block)
  if base || block.nil?
    struct = base || SparkleStruct.new
    struct.instance_exec(&block)
    struct
  else
    block
  end
end

.builtin_insert(dynamic_name, struct, *args, &block) ⇒ SparkleStruct

Insert a builtin dynamic into a context

Parameters:

  • dynamic_name (String, Symbol) —

    dynamic name

  • struct (SparkleStruct) —

    context for insertion

  • args (Object) —

    parameters for dynamic

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 375

def builtin_insert(dynamic_name, struct, *args, &block)
  if struct._self.provider_resources && lookup_key = struct._self.provider_resources.registry_key(dynamic_name)
    _name, _config = *args
    _config ||= {}
    __t_hashish(_config)
    unless _name.is_a?(SparkleFormation::FunctionStruct)
      __t_stringish(_name)
      resource_name = [
        _name,
        _config.fetch(:resource_name_suffix, dynamic_name),
      ].compact.join("_").to_sym
    else
      resource_name = _name._root
    end
    _config.delete(:resource_name_suffix)
    new_resource = struct.resources.set!(resource_name)
    new_resource.type lookup_key
    properties = new_resource.properties
    config_keys = _config.keys.zip(_config.keys.map { |k| snake(k).to_s.tr("_", "") })
    struct._self.provider_resources.resource(dynamic_name, :properties).each do |prop_name|
      key = (config_keys.detect { |k| k.last == snake(prop_name).to_s.tr("_", "") } || []).first
      value = _config[key] if key
      if value
        if value.is_a?(Proc)
          properties.set!(prop_name, &value)
        else
          properties.set!(prop_name, value)
        end
      end
    end
    new_resource.instance_exec(&block) if block
    struct._self.provider_resources.resource_customizer(new_resource, lookup_key)
    new_resource
  end
end

.camel(string) ⇒ String Originally defined in module Utils::AnimalStrings

Camel case string

Parameters:

  • string (String)

Returns:

  • (String)

.compile(path, *args) ⇒ Hashish, SparkleStruct

Compile file

Parameters:

  • path (String) —

    path to file

  • args (Object) —

    use :sparkle to return struct. provide Hash to pass through when compiling (=> {})

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 103

def compile(path, *args)
  opts = args.detect { |i| i.is_a?(Hash) } || {}
  unless path.is_a?(String) && File.file?(path.to_s)
    if spath = (opts.delete(:sparkle_path) || SparkleFormation.custom_paths[:sparkle_path])
      container = Sparkle.new(:root => spath)
      path = container.get(:template, path)[:path]
    end
  end
  formation = instance_eval(IO.read(path), path, 1)
  formation.template_path = path
  if args.delete(:sparkle)
    formation
  else
    formation.compile(opts)._dump
  end
end

.components_path=(path = nil) ⇒ String Also known as: components_path

Get/set path to component files

Parameters:

  • path (String) (defaults to: nil) —

    path to component files

Returns:

  • (String) —

    path to component files



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 62

def components_path=(path = nil)
  if path
    custom_paths[:components_directory] = path
  end
  custom_paths[:components_directory]
end

.custom_paths ⇒ Hashish

Returns custom paths

Returns:

  • (Hashish) —

    custom paths



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 37

def custom_paths
  @_paths ||= SparkleStruct.hashish.new
  @_paths
end

.dynamic(name, args = {}) { ... } ⇒ TrueClass

Define and register new dynamic

Examples:

metadata describes dynamic parameters for _config hash:
:item_name => {:description => 'Defines item name', :type => 'String'}

Parameters:

  • name (String, Symbol) —

    name of dynamic

  • args (Hash) (defaults to: {}) —

    dynamic metadata

Options Hash (args):

  • :parameters (Hash) —

    description of _config parameters

Yields:

  • dynamic block

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 182

def dynamic(name, args = {}, &block)
  @dynamics ||= SparkleStruct.hashish.new
  dynamics[name] = SparkleStruct.hashish[
    :block, block, :args, SparkleStruct.hashish[args.map(&:to_a)]
  ]
  true
end

.dynamic_info(name) ⇒ Hashish Also known as: dynamic_information

Metadata for dynamic

Parameters:

  • name (String, Symbol) —

    dynamic name

Returns:

  • (Hashish) —

    metadata information



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 194

def dynamic_info(name)
  if dynamics[name]
    dynamics[name][:args] ||= SparkleStruct.hashish.new
  else
    raise KeyError.new("No dynamic registered with provided name (#{name})")
  end
end

.dynamics ⇒ Hashish

Returns loaded dynamics

Returns:

  • (Hashish) —

    loaded dynamics



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 32

def dynamics
  @dynamics ||= SparkleStruct.hashish.new
end

.dynamics_path=(path = nil) ⇒ String Also known as: dynamics_path

Get/set path to dynamic files

Parameters:

  • path (String) (defaults to: nil) —

    path to dynamic files

Returns:

  • (String) —

    path to dynamic files



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 75

def dynamics_path=(path = nil)
  if path
    custom_paths[:dynamics_directory] = path
  end
  custom_paths[:dynamics_directory]
end

.extract_caller(cinfo) ⇒ Array<String, Integer>

Extract the origin of the caller outside this library

Parameters:

  • cinfo (Array<String>) —

    caller info

Returns:

  • (Array<String, Integer>) —

    caller path and line number



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 208

def extract_caller(cinfo)
  res = cinfo.detect { |c|
    !c.include?(SPARKLEFORMATION_ROOT_LIBRARY)
  }.to_s.split(":")[0, 2]
  if res.size != 2
    line = res.last
    if line.to_i.to_s != line
      res << 0
    end
    if res != 2
      res.unshift(:unknown)
    end
  end
  res
end

.from_hash(hash) ⇒ SparkleStruct

Note:

will do best effort on camel key auto discovery

Convert hash to SparkleStruct instance

Parameters:

  • hash (Hashish)

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 416

def from_hash(hash)
  struct = SparkleStruct.new
  struct._camel_keys_set(:auto_discovery)
  struct._load(hash)
  struct._camel_keys_set(nil)
  struct
end

.insert(dynamic_name, struct, *args, &block) ⇒ SparkleStruct

Insert a dynamic into a context

Parameters:

  • dynamic_name (String, Symbol) —

    dynamic name

  • struct (SparkleStruct) —

    context for insertion

  • args (Object) —

    parameters for dynamic

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 251

def insert(dynamic_name, struct, *args, &block)
  __t_stringish(dynamic_name)
  result = false
  begin
    opts = args.detect { |i| i.is_a?(Hash) } || {}
    dyn = struct._self.sparkle.get(:dynamic, dynamic_name, opts[:provider])
    opts = nil
    raise dyn if dyn.is_a?(Exception)
    result = nil
    dyn.monochrome.each do |dynamic_item|
      record = struct._self.audit_log.push(
        type: :dynamic,
        name: dynamic_name,
        caller: extract_caller(caller),
        location: dynamic_item[:block].source_location,
      )
      struct._self.wrapped_audit(record) do
        if result
          opts = args.detect { |i| i.is_a?(Hash) }
          if opts
            opts[:previous_layer_result] = result
          else
            args.push(:previous_layer_result => result)
          end
        end
        result = struct.instance_exec(*args, &dynamic_item[:block])
      end
    end
    if block_given?
      result.instance_exec(&block)
    end
  rescue Error::NotFound::Dynamic
    record = struct._self.audit_log.push(
      type: :dynamic,
      name: dynamic_name,
      location: [:builtin, 0],
      caller: extract_caller(caller),
    )
    result = struct._self.wrapped_audit(record) do
      builtin_insert(dynamic_name, struct, *args, &block)
    end
    unless result
      message = "Failed to locate requested dynamic block for insertion: #{dynamic_name} " \
      "(valid: #{struct._self.sparkle.dynamics.fetch(struct._self.sparkle.provider, {}).keys.sort.join(", ")})"
      if struct._self.provider_resources && struct._self.provider_resources.registry.keys.size > 1
        t_name = struct._self.provider_resources.registry.keys.first
        valid_t_name = Bogo::Utility.snake(
          t_name.split(
            struct._self.provider_resources.resource_type_splitter
          ).join("_")
        )
        message << "\nBuiltin dynamics pattern `#{t_name}` -> `:#{Bogo::Utility.snake(valid_t_name)}`"
      end
      raise message
    end
  end
  result
end

.load_component(path) ⇒ SparkleStruct

Load component

Parameters:

  • path (String) —

    path to component

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 139

def load_component(path)
  instance_eval(IO.read(path), path, 1)
  @_struct
end

.load_dynamics!(directory) ⇒ TrueClass

Load all dynamics within a directory

Parameters:

  • directory (String)

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 148

def load_dynamics!(directory)
  @loaded_dynamics ||= []
  Dir.glob(File.join(directory, "*.rb")).each do |dyn|
    dyn = File.expand_path(dyn)
    next if @loaded_dynamics.include?(dyn)
    instance_eval(IO.read(dyn), dyn, 1)
    @loaded_dynamics << dyn
  end
  @loaded_dynamics.uniq!
  true
end

.load_registry!(directory) ⇒ TrueClass

Load all registry entries within a directory

Parameters:

  • directory (String)

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 164

def load_registry!(directory)
  Dir.glob(File.join(directory, "*.rb")).each do |reg|
    reg = File.expand_path(reg)
    require reg
  end
  true
end

.nest(template, struct, *args, &block) ⇒ SparkleStruct

Note:

if symbol is provided for template, double underscores will be used for directory separator and dashes will match underscores

Nest a template into a context

Parameters:

  • template (String, Symbol) —

    template to nest

  • struct (SparkleStruct) —

    context for nesting

  • args (String, Symbol) —

    stringified and underscore joined for name

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 318

def nest(template, struct, *args, &block)
  options = args.detect { |i| i.is_a?(Hash) }
  if options
    args.delete(options)
  else
    options = {}
  end
  [template, *args].compact.each do |item|
    __t_stringish(item)
  end
  to_nest = struct._self.sparkle.get(:template, template, options[:provider])
  resource_name = template.to_s.gsub("__", "_")
  unless args.empty?
    resource_name = [
      options.delete(:overwrite_name) ? nil : resource_name,
      args.map { |a| Bogo::Utility.snake(a) }.join("_"),
    ].flatten.compact.join("_").to_sym
  end
  record = struct._self.audit_log.push(
    type: :template,
    caller: extract_caller(caller),
    name: resource_name,
    location: to_nest[:path],
  )
  struct._self.wrapped_audit(record) do
    resource_name = struct._process_key(resource_name.to_sym)
    nested_template = compile(to_nest[:path], :sparkle)
    nested_template.parent = struct._self
    nested_template.audit_log = record.audit_log
    nested_template.name = resource_name
    if options[:parameters]
      nested_template.compile_state = options[:parameters]
    end
    unless struct._self.sparkle.empty?
      nested_template.sparkle.apply(struct._self.sparkle)
    end
    nested_resource = struct.dynamic!(
      struct._self.stack_resource_type,
      resource_name,
      {:resource_name_suffix => nil},
      &block
    )
    # Ignore the stack resource that we generated in the
    # audit log since the wrapping template record will
    # provide the context with actual information
    record.audit_log.list.pop
    nested_resource.properties.stack nested_template
    nested_resource
  end
end

.registry(registry_name, struct, *args) ⇒ SparkleStruct

Insert a dynamic into a context

Parameters:

  • dynamic_name (String, Symbol) —

    dynamic name

  • struct (SparkleStruct) —

    context for insertion

  • args (Object) —

    parameters for dynamic

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 230

def registry(registry_name, struct, *args)
  __t_stringish(registry_name)
  opts = args.detect { |item| item.is_a?(Hash) } || {}
  reg = struct._self.sparkle.get(:registry, registry_name, opts[:provider])
  record = struct._self.audit_log.push(
    type: :registry,
    name: registry_name,
    location: reg[:block].source_location,
    caller: extract_caller(caller),
  )
  struct._self.wrapped_audit(record) do
    struct.instance_exec(*args, &reg[:block])
  end
end

.registry_path=(path = nil) ⇒ String Also known as: registry_path

Get/set path to registry files

Parameters:

  • path (String) (defaults to: nil) —

    path to registry files

Returns:

  • (String) —

    path to registry files



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 88

def registry_path=(path = nil)
  if path
    custom_paths[:registry_directory] = path
  end
  custom_paths[:registry_directory]
end

.snake(string) ⇒ String Originally defined in module Utils::AnimalStrings

Snake case (underscore) string

Parameters:

  • string (String)

Returns:

  • (String)

.sparkle_path=(path = nil) ⇒ String Also known as: sparkle_path

Get/set path to sparkle directory

Parameters:

  • path (String) (defaults to: nil) —

    path to directory

Returns:

  • (String) —

    path to directory



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 46

def sparkle_path=(path = nil)
  if path
    custom_paths[:sparkle_path] = path
    custom_paths[:components_directory] = File.join(path, "components")
    custom_paths[:dynamics_directory] = File.join(path, "dynamics")
    custom_paths[:registry_directory] = File.join(path, "registry")
  end
  custom_paths[:sparkle_path]
end

Instance Method Details

#apply_deep_nesting(*args) {|stack, resource, s_name| ... } ⇒ SparkleFormation::SparkleStruct

Apply deeply nested stacks. This is the new nesting approach and does not bubble parameters up to the root stack. Parameters are isolated to the stack resource itself and output mapping is automatically applied.

Yield Parameters:

  • stack (SparkleFormation) —

    stack instance

  • resource (AttributeStruct) —

    the stack resource

  • s_name (String) —

    stack resource name

Yield Returns:

  • (Hash) —

    key/values to be merged into resource properties

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 996

def apply_deep_nesting(*args, &block)
  compile
end

#apply_nesting(*args, &block) ⇒ SparkleFormation::SparkleStruct

Note:

see specific version for expected block parameters

Apply nesting logic to stack

Parameters:

  • nest_type (Symbol) —

    values: :shallow, :deep (default: :deep)

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 978

def apply_nesting(*args, &block)
  if args.include?(:shallow)
    apply_shallow_nesting(&block)
  else
    apply_deep_nesting(&block)
  end
end

#apply_shallow_nesting(*args) {|resource_name, stack| ... } ⇒ SparkleFormation::SparkleStruct

Apply shallow nesting. This style of nesting will bubble parameters up to the root stack. This type of nesting is the original and now deprecated, but remains for compat issues so any existing usage won't be automatically busted.

Yield Parameters:

  • resource_name (String) —

    name of stack resource

  • stack (SparkleFormation) —

    nested stack

Yield Returns:

  • (String) —

    Remote URL storage for template

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1057

def apply_shallow_nesting(*args, &block)
  compile
end

#block(block) ⇒ TrueClass Also known as: load_block

Add block to load order

Parameters:

  • block (Proc)

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 742

def block(block)
  composition.new_component(:__base__, &block)
  true
end

#camel(string) ⇒ String Originally defined in module Utils::AnimalStrings

Camel case string

Parameters:

  • string (String)

Returns:

  • (String)

#collect_outputs(*args) ⇒ Smash<output_name:SparkleFormation>

Returns:

  • (Smash<output_name:SparkleFormation>) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1062

def collect_outputs(*args)
  if args.include?(:force) || root?
    if !compile.outputs.nil? && !root?
      outputs = Smash[
        compile.outputs.keys!.zip(
          [self] * compile.outputs.keys!.size
        )
      ]
    else
      outputs = Smash.new
    end
    nested_stacks.each do |nested_stack|
      if nested_stack.is_a?(self.class) === true
        n_stack = nested_stack
      else
        n_stack = nested_stack._self
      end
      outputs = n_stack.collect_outputs(:force).merge(outputs)
    end
    outputs
  else
    root.collect_outputs(:force)
  end
end

#compile(args = {}) ⇒ SparkleStruct

Compile the formation

Parameters:

  • args (Hash) (defaults to: {})

Options Hash (args):

  • :state (Hash) —

    local state parameters

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 784

def compile(args = {})
  if args.key?(:state) && args.is_a?(Hash)
    @compile_state = args[:state].to_smash
    unmemoize(:compile)
  end
  memoize(:compile) do
    # NOTE: this is where we inject inherit or layering
    seed_self

    set_compile_time_parameters!
    if provider && SparkleStruct.const_defined?(camel(provider))
      struct_class = SparkleStruct.const_get(camel(provider))
      struct_name = [SparkleStruct.name, camel(provider)].join("::")
      struct_class.define_singleton_method(:name) { struct_name }
      struct_class.define_singleton_method(:to_s) { struct_name }
    else
      struct_class = SparkleStruct
    end
    load_resources!
    compiled = struct_class.new
    compiled._set_self(self)
    compiled._struct_class = struct_class
    if struct_class.const_defined?(:CAMEL_KEYS)
      compiled._camel_keys = struct_class.const_get(:CAMEL_KEYS)
    end
    if struct_class.const_defined?(:CAMEL_STYLE)
      compiled._camel_style = struct_class.const_get(:CAMEL_STYLE)
    end
    if compile_state
      compiled.set_state!(compile_state)
    end
    composition.each do |item|
      case item
      when Composition::Component
        if item.block
          if item.key == "__base__"
            if parent.nil?
              record = audit_log.push(
                type: :template,
                name: name,
                location: item.block.source_location.first,
                caller: [:template, 0],
              )
              # NOTE: Move audit log records under new record's
              # audit log. This allows components to be listed
              # logically under the template record instead of
              # at the same level.
              record.audit_log.list.replace(audit_log.list)
              record.audit_log.list.delete(record)
              audit_log.list.clear
              audit_log.list << record
            end
          else
            record = audit_log.push(
              type: :component,
              name: item.key,
              location: item.block.source_location.first,
              caller: [:template, 0],
            )
          end
          wrapped_audit(record) do
            self.class.build(compiled, &item.block)
          end
        else
          sparkle.get(:component, item.key).monochrome.each do |component_block|
            record = audit_log.push(
              type: :component,
              name: item.key,
              location: component_block[:block].source_location.first,
              caller: [:template, 0],
            )
            wrapped_audit(record) do
              self.class.build(compiled, &component_block[:block])
            end
          end
        end
      when Composition::Override
        record = audit_log.push(
          type: :component,
          name: :override,
          location: item.block.source_location.first,
          caller: [:template, 0],
        )
        if item.args && !item.args.empty?
          compiled._set_state(item.args)
        end
        wrapped_audit(record) do
          self.class.build(compiled, &item.block)
        end
      end
    end
    if compile_state && !compile_state.empty?
      set_compiled_state(compiled)
    end
    compiled
  end
end

#compile_time_parameter_setter {|| ... } ⇒ Proc, NilClass

Get or set the compile time parameter setting block. If a get request the ancestor path will be searched to root

Yields:

  • block to set compile time parameters

Yield Parameters:

Returns:

  • (Proc, NilClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 700

def compile_time_parameter_setter(&block)
  if block
    @compile_time_parameter_setter = block
  else
    if @compile_time_parameter_setter
      @compile_time_parameter_setter
    else
      parent.nil? ? nil : parent.compile_time_parameter_setter
    end
  end
end

#dump ⇒ Hash

Returns dumped hash

Returns:

  • (Hash) —

    dumped hash



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1106

def dump
  MultiJson.load(to_json)
end

#extract_template_data(template) ⇒ self

Extract information from given template and integrate with current instance

Parameters:

Returns:

  • (self) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 601

def extract_template_data(template)
  # TODO: Should allow forced override here for cases like: openstack -> rackspace
  if provider != template.provider
    raise TypeError.new "This template `#{name}` cannot inherit template `#{template.name}`! Provider mismatch: `#{provider}` != `#{template.provider}`" # rubocop:disable Metrics/LineLength
  end
  template.sparkle.apply(sparkle)
  template.seed_self
  blacklisted_templates.replace(
    (blacklisted_templates + template.blacklisted_templates).map(&:to_s).uniq
  )
  @parameters = template.parameters.to_smash.deep_merge(parameters.to_smash)
  new_composition = Composition.new(self,
                                    :components => template.composition.composite,
                                    :overrides => composition.overrides)
  composition.components.each do |item|
    if item.respond_to?(:key) && item.key == "__base__"
      item.key = Smash.new(
        :template => name,
        :component => :__base__,
        :object_id => object_id,
      ).checksum.to_s
    end
    new_composition.add_component(item)
  end
  @composition = new_composition
  self
end

#extract_templates {|stack, resource, s_name| ... } ⇒ Object

Extract and process nested stacks

Yield Parameters:

  • stack (SparkleFormation) —

    stack instance

  • resource (AttributeStruct) —

    the stack resource

  • s_name (String) —

    stack resource name

Yield Returns:

  • (Hash) —

    key/values to be merged into resource properties



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1028

def extract_templates(&block)
  stack_template_extractor(nested_stacks(:with_resource, :with_name), &block)
end

#generate_policy ⇒ Hash

Generate policy for stack

Returns:

  • (Hash) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 969

def generate_policy
  Smash.new
end

#includes_policies?(stack_hash = nil) ⇒ TrueClass, FalseClass

Returns policies defined

Returns:

  • (TrueClass, FalseClass) —

    policies defined



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 955

def includes_policies?(stack_hash = nil)
  if stack_hash
    raise Error::Deprecated.new "Hash parameter no longer valid for this method (`#{self.class}##{__callee__}`)"
  end
  unless compile.resources.nil?
    compile.resources._data.any? do |r_name, r_value|
      !r_value.policy.nil?
    end
  end
end

#inherit_from(template_name) ⇒ self

Inhert template structure

Parameters:

  • template_name (String) —

    name of template to inherit

Returns:

  • (self) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 586

def inherit_from(template_name)
  if blacklisted_templates.map(&:to_s).include?(template_name.to_s)
    raise Error::CircularInheritance.new "Circular inheritance detected between templates `#{template_name}` and `#{name}`" # rubocop:disable Metrics/LineLength
  end
  template = self.class.compile(sparkle.get(:template, template_name)[:path], :sparkle)
  template.blacklisted_templates.replace(
    (template.blacklisted_templates + blacklisted_templates).map(&:to_s).uniq
  )
  extract_template_data(template)
end

#isolated_nests?(stack_hash = nil) ⇒ TrueClass, FalseClass

Returns includes only nested stacks

Returns:

  • (TrueClass, FalseClass) —

    includes only nested stacks



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 943

def isolated_nests?(stack_hash = nil)
  if stack_hash
    raise Error::Deprecated.new "Hash parameter no longer valid for this method (`#{self.class}##{__callee__}`)"
  end
  unless compile.resources.nil?
    compile.resources._data.all? do |r_name, r_value|
      stack_resource_type?(r_value.type)
    end
  end
end

#load(*args, &user_block) ⇒ self

Load components into instance

Parameters:

  • args (String, Symbol) —

    Symbol component names or String paths

Returns:

  • (self) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 753

def load(*args, &user_block)
  args.each do |thing|
    if thing.is_a?(String)
      # NOTE: This needs to be deprecated and removed
      # TODO: deprecate
      key = File.basename(thing.to_s).sub(".rb", "")
      composition.new_component(key, &self.class.load_component(thing))
    else
      composition.new_component(thing)
    end
  end
  if block_given?
    block(user_block)
  end
  self
end

#make_output_available(output_name, outputs) ⇒ Hash

Extract output to make available for stack parameter usage at the current depth

Parameters:

  • output_name (String) —

    name of output

  • outputs (Hash) —

    listing of outputs

Returns:

  • (Hash) —

    reference to output value (used for setting parameter)



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1018

def make_output_available(output_name, outputs)
  {}
end

#merge_previous! ⇒ self

Merge previous layer template structure

Returns:

  • (self) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 574

def merge_previous!
  my_index = sparkle.get(:template, name).spectrum.find_index do |item|
    item[:path] == template_path
  end
  template = self.class.compile(sparkle.get(:template, name).layer_at(my_index - 1)[:path], :sparkle)
  extract_template_data(template)
end

#nested?(stack_hash = nil) ⇒ TrueClass, FalseClass

Returns includes nested stacks

Returns:

  • (TrueClass, FalseClass) —

    includes nested stacks



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 931

def nested?(stack_hash = nil)
  if stack_hash
    raise Error::Deprecated.new "Hash parameter no longer valid for this method (`#{self.class}##{__callee__}`)"
  end
  unless compile.resources.nil?
    compile.resources._data.any? do |r_name, r_value|
      stack_resource_type?(r_value.type)
    end
  end
end

#nested_stacks(*args) ⇒ Array<SparkleFormation>

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 909

def nested_stacks(*args)
  if compile[:resources]
    compile.resources.keys!.map do |key|
      if stack_resource_type?(compile.resources[key].type)
        if !compile.resources[key].properties.stack.nil?
          result = [compile.resources[key].properties.stack]
          if args.include?(:with_resource)
            result.push(compile[:resources][key])
          end
          if args.include?(:with_name)
            result.push(key)
          end
          result.size == 1 ? result.first : result
        end
      end
    end.compact
  else
    []
  end
end

#output_matched?(p_name, output_names) ⇒ String, NilClass

Note:

will auto downcase name prior to comparison

Check if parameter name matches an output name

Parameters:

  • p_name (String, Symbol) —

    parameter name

  • output_names (Array<String>) —

    list of available outputs

Returns:

  • (String, NilClass) —

    matching output name



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1006

def output_matched?(p_name, output_names)
  output_names.detect do |o_name|
    Bogo::Utility.snake(o_name).tr("_", "") == Bogo::Utility.snake(p_name).tr("_", "")
  end
end

#overrides(args = {}) { ... } ⇒ Object

Registers block into overrides

Parameters:

  • args (Hash) (defaults to: {}) —

    optional arguments to provide state

Yields:

  • override block



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 774

def overrides(args = {}, &block)
  composition.new_override(args, &block)
  self
end

#recompile ⇒ SparkleStruct

Clear compiled stack if cached and perform compilation again

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 903

def recompile
  unmemoize(:compile)
  compile
end

#remap_nested_parameters(template, parameters, stack_name, stack_resource, output_map) ⇒ TrueClass

Note:

if parameter has includes StackUnique a new parameter will be added to container stack and it will not use outputs

Extract parameters from nested stacks. Check for previous nested stack outputs that match parameter. If match, set parameter to use output. If no match, check container stack parameters for match. If match, set to use ref. If no match, add parameter to container stack parameters and set to use ref.

Parameters:

  • template (Hash) —

    template being processed

  • parameters (Hash) —

    top level parameter set being built

  • stack_name (String) —

    name of stack resource

  • stack_resource (Hash) —

    duplicate of stack resource contents

  • output_map (Hash) —

    mapping of output names to required stack output access

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1101

def remap_nested_parameters(template, parameters, stack_name, stack_resource, output_map)
  true
end

#root ⇒ SparkleFormation

Returns root stack

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 663

def root
  if parent
    parent.root
  else
    self
  end
end

#root? ⇒ TrueClass, FalseClass

Returns current stack is root

Returns:

  • (TrueClass, FalseClass) —

    current stack is root



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 681

def root?
  root == self
end

#root_path ⇒ Array<SparkleFormation] path to root

Returns Array<SparkleFormation] path to root

Returns:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 672

def root_path
  if parent
    [*parent.root_path, self].compact
  else
    [self]
  end
end

#seed_self ⇒ self

Update underlying data structures based on inherit or layering behavior if defined for this template

Parameters:

  • options (Hash)

Returns:

  • (self) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 555

def seed_self
  memoize(:seed) do
    options = @seed
    if options[:inherit] && options[:layering].to_s == "merge"
      raise ArgumentError.new "Cannot merge and inherit!"
    end
    if options[:inherit]
      inherit_from(options[:inherit])
    elsif options[:layering].to_s == "merge"
      merge_previous!
    end
    true
  end
  self
end

#set_compile_time_parameters! ⇒ Object

Set the compile time parameters for the stack if the setter proc is available



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 714

def set_compile_time_parameters!
  if compile_time_parameter_setter
    compile_time_parameter_setter.call(self)
  end
end

#set_compiled_state(compiled) ⇒ AttributeStruct

Set the current compile_state into the compiled result

Parameters:

  • compiled (AttributeStruct)

Returns:

  • (AttributeStruct) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 887

def set_compiled_state(compiled)
  storage_compile_state = Smash.new
  parameters.each do |param_key, param_config|
    if param_config.fetch(:type, "string").to_s.downcase.to_sym != :complex
      storage_compile_state[param_key] = compile_state[param_key]
    end
  end
  unless storage_compile_state.empty?
    compiled.outputs.compile_state.value MultiJson.dump(storage_compile_state)
  end
  compiled
end

#set_generation_parameters!(params) ⇒ Hash

Validation parameters used for template generation to ensure they are in the expected format

Parameters:

  • params (Hash) —

    parameter set

Returns:

  • (Hash) —

    parameter set

Raises:

  • (ArgumentError) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 726

def set_generation_parameters!(params)
  params.each do |name, value|
    unless value.is_a?(Hash)
      raise TypeError.new("Expecting `Hash` type. Received `#{value.class}`")
    end
    if key = value.keys.detect { |k| !ALLOWED_GENERATION_PARAMETERS.include?(k.to_s) }
      raise ArgumentError.new("Invalid generation parameter key provided `#{key}`")
    end
  end
  params
end

#snake(string) ⇒ String Originally defined in module Utils::AnimalStrings

Snake case (underscore) string

Parameters:

  • string (String)

Returns:

  • (String)

#sparkle_dump ⇒ Hash

Returns dumped hash

Returns:

  • (Hash) —

    dumped hash



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1111

def sparkle_dump
  MultiJson.load(
    MultiJson.dump(
      compile.sparkle_dump!
    )
  )
end

#stack_resource_type ⇒ String

Returns provider stack resource type

Returns:

  • (String) —

    provider stack resource type



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 630

def stack_resource_type
  DEFAULT_STACK_RESOURCE
end

#stack_resource_type?(type) ⇒ TrueClass, FalseClass

Check if type is a registered stack type

Parameters:

  • type (String)

Returns:

  • (TrueClass, FalseClass) 


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# File 'lib/sparkle_formation/sparkle_formation.rb', line 658

def stack_resource_type?(type)
  stack_resource_types.include?(type)
end

#stack_template_extractor(x_stacks, &block) ⇒ Object

Run the stack extraction

Parameters:



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1035

def stack_template_extractor(x_stacks, &block)
  x_stacks.each do |stack, resource, s_name|
    unless stack.nested_stacks.empty?
      stack_template_extractor(stack.nested_stacks(:with_resource, :with_name), &block)
    end
    resource.properties._delete(:stack)
    s_parent = resource.properties.stack
    stack.compile._parent(s_parent)
    resource.properties.set!(:stack, stack.compile)
    block.call(s_name, stack, resource)
  end
end

#to_json(*args) ⇒ String

Returns dumped hash JSON

Returns:

  • (String) —

    dumped hash JSON



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 1120

def to_json(*args)
  # NOTE: Ported in from batali
  # Prevent stupid conversion errors of
  # JSON::Ext::Generator::State into Hash
  args = args.map do |argument|
    argument.respond_to?(:to_h) ? argument.to_h : argument
  end
  MultiJson.dump(compile.dump!, *args)
end

#wrapped_audit(record) ⇒ Object

Wrap given block within audit log of given record

Parameters:

Returns:

  • (Object) —

    result of yield



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# File 'lib/sparkle_formation/sparkle_formation.rb', line 542

def wrapped_audit(record)
  start_log = audit_log
  @audit_log = record ? record.audit_log : start_log
  yield
ensure
  @audit_log = start_log
end