Class: Terraspace::Terraform::Runner::Backend

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Includes:
Compiler::CommandsConcern
Defined in:
lib/terraspace/terraform/runner/backend.rb,
lib/terraspace/terraform/runner/backend/parser.rb

Defined Under Namespace

Classes: Parser

Constant Summary collapse

@@created = 
{}

Instance Method Summary collapse

Methods included from Compiler::CommandsConcern

#command_is?

Constructor Details

#initialize(mod) ⇒ Backend

Returns a new instance of Backend.



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# File 'lib/terraspace/terraform/runner/backend.rb', line 6

def initialize(mod)
  @mod = mod
end

Instance Method Details

#backend ⇒ Object 



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

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

#backend_info ⇒ Object 



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# File 'lib/terraspace/terraform/runner/backend.rb', line 36

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/terraform/runner/backend.rb', line 45

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/terraform/runner/backend.rb', line 32

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

#cache_key ⇒ Object 



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# File 'lib/terraspace/terraform/runner/backend.rb', line 28

def cache_key
  @mod.build_dir
end

#create ⇒ Object 



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# File 'lib/terraspace/terraform/runner/backend.rb', line 11

def create
  return if @@created[cache_key]
  return if Terraspace.config.auto_create_backend == false
  return unless requires_backend?

  # 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

  # IE: TerraspacePluginAws::Interfaces::Backend.new
  interface = klass.new(backend_info)
  interface.call
end

#requires_backend? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/terraspace/terraform/runner/backend.rb', line 53

def requires_backend?
  command_is?(requires_backend_commands)
end

#requires_backend_commands ⇒ Object 



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# File 'lib/terraspace/terraform/runner/backend.rb', line 57

def requires_backend_commands
  %w[down init output plan providers refresh show up validate]
end