Class: Cloudspin::Stack::BackendConfiguration

Inherits:
Object
  • Object
show all
Defined in:
lib/cloudspin/stack/backend_configuration.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(terraform_backend_configuration_values:, instance_identifier:, stack_name:, base_folder:) ⇒ BackendConfiguration

Returns a new instance of BackendConfiguration.



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 11

def initialize(
                terraform_backend_configuration_values:,
                instance_identifier:,
                stack_name:,
                base_folder:
              )
  @terraform_backend_configuration_values  = terraform_backend_configuration_values
  @instance_identifier  = instance_identifier
  @stack_name           = stack_name
  @base_folder          = base_folder

  @has_remote_state         = ! @terraform_backend_configuration_values['bucket'].nil?

  if @has_remote_state
    # puts "DEBUG: Using remote state"
    @local_state_folder = nil
    @local_statefile = nil
    @terraform_backend_configuration_values['key'] = default_state_key
    @migrate_state = initialize_migrate_flag
  else
    # puts "DEBUG: Not using remote state"
    @migrate_state = false
  end

  if !@has_remote_state || @migrate_state
    @local_state_folder = intialize_state_folder
    @local_statefile = "#{@local_state_folder}/#{@instance_identifier}.tfstate"
    # puts "DEBUG: Local statefile: #{@local_statefile}"
    # puts "DEBUG: Migrating? #{@migrate_state}"
  end
end

Instance Attribute Details

#local_state_folder ⇒ Object (readonly)

Returns the value of attribute local_state_folder.



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 8

def local_state_folder
  @local_state_folder
end

#local_statefile ⇒ Object (readonly)

Returns the value of attribute local_statefile.



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 9

def local_statefile
  @local_statefile
end

Instance Method Details

#default_state_key ⇒ Object 



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 80

def default_state_key
  "#{@instance_identifier}.tfstate"
end

#initialize_migrate_flag ⇒ Object 



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 71

def initialize_migrate_flag
  if @terraform_backend_configuration_values['migrate'].nil?
    false
  else
    migrate_value = @terraform_backend_configuration_values.delete('migrate')
    migrate_value.to_s.downcase == 'true'
  end
end

#intialize_state_folder ⇒ Object 



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 65

def intialize_state_folder
  # TODO: Prefer to not actually create the folder, but seemed necessary to build the full path string.
  FileUtils.mkdir_p "#{@base_folder}/state"
  Pathname.new("#{@base_folder}/state/#{@instance_identifier}").realdirpath.to_s
end

#migrate_state? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cloudspin/stack/backend_configuration.rb', line 84

def migrate_state?
  @migrate_state
end

#remote_state? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cloudspin/stack/backend_configuration.rb', line 88

def remote_state?
  @has_remote_state
end

#terraform_command_parameters ⇒ Object 



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 55

def terraform_command_parameters
  if remote_state?
    {}
  else
    {
      :state => @local_statefile
    }
  end
end

#terraform_init_parameters ⇒ Object 



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# File 'lib/cloudspin/stack/backend_configuration.rb', line 43

def terraform_init_parameters
  if remote_state?
    {
      backend: 'true',
      force_copy: migrate_state?,
      backend_config: @terraform_backend_configuration_values
    }
  else
    {}
  end
end