Class: Terraspace::Compiler::Backend

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Defined in:
lib/terraspace/compiler/backend.rb,
lib/terraspace/compiler/backend/parser.rb

Defined Under Namespace

Classes: Parser

Constant Summary collapse

@@created = 
{}

Instance Method Summary collapse

Constructor Details

#initialize(mod) ⇒ Backend

Returns a new instance of Backend.



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# File 'lib/terraspace/compiler/backend.rb', line 5

def initialize(mod)
  @mod = mod
end

Instance Method Details

#backend ⇒ Object 



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# File 'lib/terraspace/compiler/backend.rb', line 35

def backend
  Parser.new(@mod).result
end

#backend_info ⇒ Object 



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# File 'lib/terraspace/compiler/backend.rb', line 31

def backend_info
  backend.values.first # structure within the s3 or gcs key
end

#backend_interface(name) ⇒ Object 



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# File 'lib/terraspace/compiler/backend.rb', line 40

def backend_interface(name)
  return unless name
  # IE: TerraspacePluginAws::Interfaces::Backend
  klass_name = Terraspace::Plugin.klass("Backend", backend: name)
  klass_name.constantize if klass_name
rescue NameError
end

#backend_name ⇒ Object 



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# File 'lib/terraspace/compiler/backend.rb', line 27

def backend_name
  backend.keys.first # IE: s3, gcs, etc
end

#cache_key ⇒ Object 



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# File 'lib/terraspace/compiler/backend.rb', line 23

def cache_key
  @mod.build_dir
end

#create ⇒ Object 



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# File 'lib/terraspace/compiler/backend.rb', line 10

def create
  return if @@created[cache_key]
  # set immediately, since local storage wont reach bottom.
  # if fail for other backends, there will be an exception anyway
  @@created[cache_key] = true

  klass = backend_interface(backend_name)
  return unless klass # in case auto-creation is not supported for specific backend

  interface = klass.new(backend_info)
  interface.call
end