Class: IDRegistry::RegistryMiddleware

Inherits:
Object
  • Object
show all
Defined in:
lib/idregistry/middleware.rb

Overview

A Rack middleware that manages registries around a request.

Configure this middleware with a set of registry-related tasks, such as creating temporary registries scoped to the request, or clearing registries at the end of the request.

A task object must include two methods: pre and post. These methods are called before and after the request, and are passed the Rack environment hash.

Defined Under Namespace

Classes: ClearRegistry, SpawnRegistry

Instance Method Summary collapse

Constructor Details

#initialize(app_, tasks_ = [], opts_ = {}) ⇒ RegistryMiddleware

Create a middleware.

After the required Rack app argument, provide an array of tasks.



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# File 'lib/idregistry/middleware.rb', line 129

def initialize(app_, tasks_=[], opts_={})
  @app = app_
  @tasks = tasks_
end

Instance Method Details

#call(env_) ⇒ Object

Wrap the Rack app with registry tasks.



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# File 'lib/idregistry/middleware.rb', line 137

def call(env_)
  begin
    @tasks.each{ |task_| task_.pre(env_) }
    return @app.call(env_)
  ensure
    @tasks.each{ |task_| task_.post(env_) }
  end
end