Hoodoo

Module used as a namespace for all of Hoodoo's facilities.

File: uuid_validator.rb
(C): Loyalty New Zealand 2014
Purpose: UUID validator for models.

26-Nov-2014 (RJS): Created.

File: base.rb
(C): Loyalty New Zealand 2014
Purpose: Include all mixins.

25-Nov-2014 (ADH): Created.

File: creator.rb
(C): Loyalty New Zealand 2015
Purpose: Support mixin for models subclassed from ActiveRecord::Base providing context-aware model instance creation, allowing service authors to auto-inherit related features from Hoodoo without changing their code.

07-Dec-2015 (ADH): Created as a proper place for "new_in",
                   which had historically and confusingly
                   resided inside the Finder mixin.

File: dated.rb
(C): Loyalty New Zealand 2015
Purpose: Support mixin for models subclassed from ActiveRecord::Base providing as-per-API-standard dating support.

14-Jul-2015 (ADH): Created.
21-Jul-2015 (RJS): Functionality implemented.

File: manually_dated.rb
(C): Loyalty New Zealand 2015
Purpose: Support mixin for models subclassed from ActiveRecord::Base providing as-per-API-standard dating support.

14-Jul-2015 (ADH): Created.
21-Jul-2015 (RJS): Functionality implemented.

File: search_helper.rb
(C): Loyalty New Zealand 2015
Purpose: Supplementary helper class included by “finder.rb”. See Hoodoo::ActiveRecord::Finder, especially Hoodoo::ActiveRecord::Finder::ClassMethods#search_with, for details.

09-Jul-2015 (ADH): Created.

File: security_helper.rb
(C): Loyalty New Zealand 2018
Purpose: Supplementary helper class included by “finder.rb”. See Hoodoo::ActiveRecord::Secure, especially Hoodoo::ActiveRecord::Secure::ClassMethods#secure_with and its options Hash, for details.

05-Apr-2018 (ADH): Created.

File: support.rb
(C): Loyalty New Zealand 2015
Purpose: This file includes a support class that is basically a public, independent expression of a series of specialised methods that would otherwise have been private, were it not for them being called by mixin code. See Hoodoo::ActiveRecord::Support documentation for details.

14-Jul-2015 (ADH): Created.

File: translated.rb
(C): Loyalty New Zealand 2015
Purpose: Support mixin for models subclassed from ActiveRecord::Base providing as-per-API-standard internationalisation support.

14-Jul-2015 (ADH): Created.

File: uuid.rb
(C): Loyalty New Zealand 2014
Purpose: Support mixin for models subclassed from ActiveRecord::Base providing UUID management.

17-Nov-2014 (ADH): Created.

File: writer.rb
(C): Loyalty New Zealand 2015
Purpose: Support mixin for models subclassed from ActiveRecord::Base providing context-aware data writing, allowing service authors to auto-inherit persistence-related features from Hoodoo without changing their code.

31-Aug-2015 (ADH): Created.

File: augmented_array.rb.rb
(C): Loyalty New Zealand 2014
Purpose: A subclass of Ruby standard library Array used by the Hoodoo::Client::Endpoint family.

11-Dec-2014 (ADH): Created.
05-Mar-2015 (ADH): Moved to Hoodoo::Client.

File: augmented_array.rb.rb
(C): Loyalty New Zealand 2014
Purpose: A subclass of Ruby standard library Array used by the Hoodoo::Client::Endpoint family.

11-Dec-2014 (ADH): Created.
05-Mar-2015 (ADH): Moved to Hoodoo::Client.

File: augmented_array.rb.rb
(C): Loyalty New Zealand 2014
Purpose: A subclass of Ruby standard library Array used by the Hoodoo::Client::Endpoint family.

11-Dec-2014 (ADH): Created.
05-Mar-2015 (ADH): Moved to Hoodoo::Client.

File: endpoint.rb
(C): Loyalty New Zealand 2015
Purpose: Resource endpoint definition.

05-Mar-2015 (ADH): Created.

File: amqp.rb
(C): Loyalty New Zealand 2015
Purpose: Resource endpoint definition.

05-Mar-2015 (ADH): Created.

File: auto_session.rb
(C): Loyalty New Zealand 2015
Purpose: Resource endpoint definition.

12-Mar-2015 (ADH): Created.

File: headers.rb
(C): Loyalty New Zealand 2015
Purpose: If you can't think of where some code should live, use a Class or Module as a namespace for what amounts to library routines. The class defined here has support data and code for Hoodoo::Client, Hoodoo::Services::Middleware and others.

22-Sep-2015 (ADH): Created.

File: paginated_enumeration.rb
(C): Loyalty New Zealand 2016
Purpose: A module that adds support for enumeration over paginated resources.

29-Sep-2016 (DJO): Created.

File: communicators.rb
(C): Loyalty New Zealand 2014
Purpose: Include the code providing a pool of fast or slow workers that communicate with the outside world.

26-Jan-2015 (ADH): Split from top-level inclusion file.

File: fast.rb
(C): Loyalty New Zealand 2014
Purpose: A fast communication-orientated object intended to be called synchronously via Hoodoo::Communicators::Pool.

15-Dec-2014 (ADH): Created.

File: pool.rb
(C): Loyalty New Zealand 2014
Purpose: A pool of communication-orientated objects which are either fast and operate synchronously, or are slow and are called asynchronously via a Ruby Thread.

15-Dec-2014 (ADH): Created.

File: s;pw.rb
(C): Loyalty New Zealand 2014
Purpose: A slow communication-orientated object intended to be called asynchronously via Hoodoo::Communicators::Pool.

15-Dec-2014 (ADH): Created.

File: data.rb
(C): Loyalty New Zealand 2014
Purpose: Include common Type and Resource definitions.

26-Jan-2015 (ADH): Split from top-level inclusion file.

File: caller.rb
(C): Loyalty New Zealand 2015
Purpose: Define documented Platform API Resource 'Caller'.

30-Jan-2015 (RJS): Created.

File: errors.rb
(C): Loyalty New Zealand 2014
Purpose: Define documented Platform API Resource 'Errors'.

23-Sep-2014 (ADH): Created.

File: log.rb
(C): Loyalty New Zealand 2014
Purpose: Define documented Platform API Resource 'Log'.

25-Nov-2014 (ADH): Created.
01-Dec-2014 (ADH): Renamed resource from LogEntry to Log.

File: session.rb
(C): Loyalty New Zealand 2015
Purpose: Define documented Platform API Resource 'Session'.

30-Jan-2015 (RJS): Created.

File: error_primitive.rb
(C): Loyalty New Zealand 2014
Purpose: Define documented Platform API Type 'ErrorPrimitive'.

22-Sep-2014 (ADH): Created.

File: permissions_full.rb
(C): Loyalty New Zealand 2015
Purpose: Define utility Type 'PermissionsFull'.

02-Feb-2015 (RJS): Created.

File: permissions_resources.rb
(C): Loyalty New Zealand 2015
Purpose: Define documented Platform API Type 'PermissionsResources'.

30-Jan-2015 (RJS): Created.

File: error_descriptions.rb
(C): Loyalty New Zealand 2014
Purpose: Error descriptions - provide a DSL and a container for a list of known error codes and associated data. Defines a platform API's platform and generic domain codes by default. Services can declare additional errors.

22-Sep-2014 (ADH): Created.
09-Oct-2014 (ADH): Updated for Preview Release 8.
16-Oct-2014 (TC):  Added session error

File: errors.rb
(C): Loyalty New Zealand 2014
Purpose: A collection of error messages, starting empty, with one or more messages added to it as errors are encountered by some processing task. Errors are added according to codes described by Hoodoo::ErrorDescriptions instances.

22-Sep-2014 (ADH): Created.

File: fast_writer.rb
(C): Loyalty New Zealand 2014
Purpose: Base class for fast log writers.

16-Dec-2014 (ADH): Created.

File: logger.rb
(C): Loyalty New Zealand 2014
Purpose: Multiple output logging via local code or external services.

16-Dec-2014 (ADH): Created.

File: slow_writer.rb
(C): Loyalty New Zealand 2014
Purpose: Base class for slow log writers.

16-Dec-2014 (ADH): Created.

File: writer_mixin.rb
(C): Loyalty New Zealand 2014
Purpose: Common code for fast and slow log writer base classes.

16-Dec-2014 (ADH): Created.

File: file_writer.rb
(C): Loyalty New Zealand 2014
Purpose: Write flat log messages to a file.

16-Dec-2014 (ADH): Created.

File: file_writer.rb
(C): Loyalty New Zealand 2014
Purpose: Write flat log messages to an I/O stream - STDOUT by default.

16-Dec-2014 (ADH): Created.

File: monkey.rb
(C): Loyalty New Zealand 2016
Purpose: Official, reversible monkey patching.

11-Apr-2016 (ADH): Created.

File: active_record_dated_finder_additions.rb
(C): Loyalty New Zealand 2017
Purpose: Extend Hoodoo::ActiveRecord::Finder::ClassMethods#acquire_in! so that it adds error generic.contemporary_exists to the provided context if a dated instance is absent.

01-Nov-2017 (ADH): Created.

File: active_record_manually_dated_finder_additions.rb
(C): Loyalty New Zealand 2017
Purpose: Extend Hoodoo::ActiveRecord::Finder::ClassMethods#acquire_in! so that it adds error generic.contemporary_exists to the provided context if a dated instance is absent.

01-Nov-2017 (ADH): Created.

File

datadog_traced_amqp.rb

(C)

Loyalty New Zealand 2017

Purpose

Extend the AMQP endpoint to support Datadog cross-app transaction tracing. Only defined and registered if the Datadog gem is available and Hoodooo Client is in scope.

See Hoodoo::Monkey::Patch::DatadogTracedAMQP for more.

22-Jun-2017 (JRW): Created.

Add a method tracer on the dispatch method so that the time spent executing middleware can be distinguished from the time spent executing the service implementation.

File

newrelic_traced_amqp.rb

(C)

Loyalty New Zealand 2015

Purpose

Extend the AMQP endpoint to support NewRelic cross-app transaction tracing. Only defined and registered if the NewRelic gem is available and Hoodooo Client is in scope.

See Hoodoo::Monkey::Patch::NewRelicTracedAMQP for more.

08-Apr-2016 (RJS): Created.

File: presenters.rb
(C): Loyalty New Zealand 2014
Purpose: Include the schema based data validation and rendering code.

26-Jan-2015 (ADH): Split from top-level inclusion file.

File: base_presenter.rb
(C): Loyalty New Zealand 2014
Purpose: Schema-based data rendering and validation.

02-Dec-2014 (ADH): Merge of DocumentedPresenter code into
                   Base.

File: base_dsl.rb
(C): Loyalty New Zealand 2014
Purpose: Implement a DSL used to define a schema for data rendering and validation.

02-Dec-2014 (ADH): Merge of DocumentedDSL code into BaseDSL.

File: common_resource_fields.rb
(C): Loyalty New Zealand 2014
Purpose: Define a schema describing fields common to any schema that describes an API Resource.

02-Dec-2014 (ADH): Split from DocumentedPresenter.

File: embedding.rb
(C): Loyalty New Zealand 2015
Purpose: Light weight, simple support for basic embed and reference operations that help reduce service reliance on “knowing” exactly how to structure such data / avoid inconsistency.

29-Apr-2015 (ADH): Created.

File: tags.rb
(C): Loyalty New Zealand 2014
Purpose: Hoodoo::Presenters::BaseDSL field implementation which supports a field defined to contain a string of comma separated tags.

30-Sep-2014 (ADH): Created.
31-Oct-2014 (ADH): Moved to generic presenter layer from
                   documented data layer.

File: documented_uuid.rb
(C): Loyalty New Zealand 2014
Purpose: Hoodoo::Presenters::BaseDSL field implementation which supports a field defined to contain a UUID that (optionally) can be verified as referring to a specific other Resource.

22-Sep-2014 (ADH): Created.
31-Oct-2014 (ADH): Moved to generic presenter layer from
                   documented data layer.

File: services.rb
(C): Loyalty New Zealand 2014
Purpose: Include code useful to client service applications.

26-Jan-2015 (ADH): Split from top-level inclusion file.

File: by_convention.rb
(C): Loyalty New Zealand 2015
Purpose: Discover - after a fashion - resource endpoint locations by convention, based on Rails-like pluralisation rules. For HTTP-based endpoints. Requires ActiveSupport.

03-Mar-2015 (ADH): Created.

File: by_flux.rb
(C): Loyalty New Zealand 2015
Purpose: Discover resource endpoint locations via Alchemy Flux.

03-Mar-2015 (ADH): Created.
21-Jan-2016 (ADH): Reimplemented for Alchemy Flux.

File: discovery.rb
(C): Loyalty New Zealand 2015
Purpose: Support resource endpoint discovery.

03-Mar-2015 (ADH): Created.

File: for_amqp.rb
(C): Loyalty New Zealand 2015
Purpose: Describe a resource endpoint location in a way that allows it to be contacted over AMQP (e.g. via Alchemy).

03-Mar-2015 (ADH): Created.

File: for_http.rb
(C): Loyalty New Zealand 2015
Purpose: Describe a resource endpoint location in a way that allows it to be contacted over HTTP.

03-Mar-2015 (ADH): Created.

File: for_local.rb
(C): Loyalty New Zealand 2015
Purpose: Describe a resource endpoint location in a way that allows it to be method-called from the service middleware directly.

10-Mar-2015 (ADH): Created.

File: for_remote.rb
(C): Loyalty New Zealand 2015
Purpose: Describe a “pseudo” resource endpoint location in terms of an interation context and wrapped “real” endpoint instance.

10-Mar-2015 (ADH): Created.

File: amqp_log_writer.rb
(C): Loyalty New Zealand 2014
Purpose: Structured logging support for the middleware.

20-Nov-2014 (ADH): Created.
16-Dec-2014 (ADH): Changed into a new Hoodoo::Logger style
                   instantiable log writer.

File: inter_resource_local.rb
(C): Loyalty New Zealand 2014
Purpose: An endpoint that calls back into a known middleware instance to communicate with a resource that is available in the local service application.

11-Nov-2014 (ADH): Split out from service_middleware.rb
09-Mar-2015 (ADH): Adapted from old endpoint.rb code.

File: inter_resource_remote.rb
(C): Loyalty New Zealand 2015
Purpose: Resource endpoint definition.

05-Mar-2015 (ADH): Created.

File: exception_reporting.rb
(C): Loyalty New Zealand 2014
Purpose: Reporting exceptions to third party error management services.

08-Dec-2014 (ADH): Created.

File: airbrake_reporter.rb
(C): Loyalty New Zealand 2014
Purpose: Send exception details to Airbrake.

08-Dec-2014 (ADH): Created.

File: raygun_reporter.rb
(C): Loyalty New Zealand 2014
Purpose: Send exception details to Raygun.

08-Dec-2014 (ADH): Created.

File: interaction.rb
(C): Loyalty New Zealand 2015
Purpose: Encapsulate all data related to an interaction (API call) inside an object.

13-Feb-2015 (ADH): Created.

File: context.rb
(C): Loyalty New Zealand 2014
Purpose: Container for information about the context of a call to a service, including session, request and response.

03-Oct-2014 (ADH): Created.

File

implementation.rb

(C)

Loyalty New Zealand 2014

Purpose

Service authors create subclasses of Hoodoo::Services::Service, which lists the one or more subclasses of Hoodoo::Services::Interface the service author writes; each of those declares an interface which refers, for each interface endpoint, to a subclass of the class described here. Service authors create the body of their service implementation within the subclass.

This file, then, does very little beyond describing the method framework that service authors use.

24-Sep-2014 (ADH): Created.

File: permissions.rb
(C): Loyalty New Zealand 2014
Purpose: Allow/ask/deny support for resources and actions.

26-Jan-2015 (ADH): Created.

File: request.rb
(C): Loyalty New Zealand 2014
Purpose: A high level description of a client's request, with all of the “raw” Rack request data parsed, verified as far as possible and generally cleaned up. Instances of this class are given to Hoodoo::Services::Implementation methods for each new request.

24-Sep-2014 (ADH): Created.

File

service.rb

(C)

Loyalty New Zealand 2014

Purpose

Define a class that service authors subclass and use to declare the component interfaces within the service via a very small DSL.

This class is passed to Rack and treated like an endpoint Rack application, though the service middleware in practice does not pass on calls using the Rack interface; it uses the custom calls exposed by Hoodoo::Services::Implementation. Rack's involvement between the two is really limited to just passing an instance of the service application subclass to the middleware so it knows who to “talk to”.

23-Sep-2014 (ADH): Created.

File: dalli_client.rb
(C): Loyalty New Zealand 2017
Purpose: A mock/fake Dalli::Client minimal implementation as an alternative test back-end for Memcached-independent tests.

02-Feb-2017 (ADH): Created.

File: redis.rb
(C): Loyalty New Zealand 2017
Purpose: A mock/fake Redis client minimal implementation as an alternative test back-end for Redis-independent tests.

02-Feb-2017 (ADH): Created.

File: transient_store.rb
(C): Loyalty New Zealand 2017
Purpose: Provide a simple abstraction over transient storage engines such as Memcached or Redis, making it easier for client code to switch engines with very few changes.

01-Feb-2017 (ADH): Created.

File: base.rb
(C): Loyalty New Zealand 2017
Purpose: Base class for Base class for Hoodoo::TransientStore plugins.

01-Feb-2017 (ADH): Created.

File: memcached_redis_mirror.rb
(C): Loyalty New Zealand 2017
Purpose: Hoodoo::TransientStore plugin supporting storage into both Memcached and Redis simultaneously.

01-Feb-2017 (ADH): Created.

File: string_inquirer.rb
Purpose: StringInquirer class copied from ActiveSupport 4.1.6, to avoid dragging in that huge dependency for this one thing.

02-Oct-2014 (ADH): Copied from ActiveSupport 4.1.6.

File: version.rb
(C): Loyalty New Zealand 2015
Purpose: Declare this gem's version number.

27-Jan-2015 (ADH): Created (for gem under name Hoodoo).

Namespace

Constants

VERSION	=	'2.12.4'
	The Hoodoo gem version. If this changes, be sure to re-run `bundle install` or `bundle update`.
DATE	=	'2019-11-15'
	The Hoodoo gem date. If this changes, be sure to re-run `bundle install` or `bundle update`.

Module Hoodoo