ServicesUnit

libflitter/services/ServicesUnit~ ServicesUnit

Unit to load and manage externally-defined services.

Constructor

new ServicesUnit(base_directoryopt)

Instantiate the unit.

Parameters:
Name Type Attributes Default Description
base_directory string <optional>
 './app/services'
Source:

Extends

Members

(static) name

Get the name of the service provided by this unit: 'services'

Source:

(private) _di_allow_defer :boolean

If true, the injector will defer the class if the class requests any services that the container is missing. These services are filled in later and added to the prototype and any instances. True by default.

Type:
  • boolean
Overrides:
Source:

(private) _di_deferred_instances :Array.<module:flitter-di/src/Injectable~Injectable>

Collection of instances of this class that need to have the deferred service instances injected into them when the deferred services are finally provided.

Type:
Overrides:
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(private) _di_deferred_services :Array.<string>

List of services that were deferred and not provided at the time of injection.

Type:
  • Array.<string>
Overrides:
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canonical_item :string

The canonical name of the item.

Type:
  • string
Overrides:
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canonical_items :object

Mapping of canonical names to instances for this item.

Type:
  • object
Overrides:
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directory :Promise.<void>|Promise.<string>

The root directory for this canonical resource's files.

Type:
  • Promise.<void> | Promise.<string>
Overrides:
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suffix :string

The file extension of the canonical item files.

Type:
  • string
Overrides:
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Methods

(async) cleanup(app) → {Promise.<void>}

Cleans up the unit's resources before Flitter closes.

Parameters:
Name Type Description
app module:libflitter/app/FlitterApp~FlitterApp

the Flitter app
Overrides:
Source:
Returns:
Type
Promise.<void>

directories() → {object}

Get the directories provided by this unit.

Overrides:
Source:
Returns:
Type
object

get(name) → {object}

Resolve an unqualified canonical name to a registered canonical item.

Parameters:
Name Type Description
name string
Overrides:
Source:
Returns:
Type
object

(async) go(app) → {Promise.<void>}

Initializes the unit. Recursively iterates over the base directory and finds all valid files. Loads the instances from those files and initializes them.

Parameters:
Name Type Description
app module:libflitter/app/FlitterApp~FlitterApp

the Flitter app
Overrides:
Source:
Returns:
Type
Promise.<void>

(async) init_canonical_file(info) → {Promise.<*>}

Prepare a single canonical service and return the value that should be given by the resolver. The services are registered into the dependency injector by their canonical name.

Parameters:
Name Type Description
info object
Properties
Name Type Description
app module:libflitter/app/FlitterApp
name string

the unqualified canonical name
instance *

the static service CLASS from the file
Overrides:
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Returns:
Type
Promise.<*>

name() → {String}

Get the name of the unit. Should be a lowercase, alphanum/dash/underscore string.

Overrides:
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Returns:
Type
String

status(setopt) → {string}

Get or set the unit's current status.

Parameters:
Name Type Attributes Description
set string <optional>

if provided, set the status of the unit
Overrides:
Source:
Returns:
  • current status of the unit
Type
string

templates() → {object}

Get the templates provided by this unit: 'service'

Source:
Returns:
Type
object