Class: Eldr::Cascade

Inherits:
Object
  • Object
show all
Defined in:
lib/eldr/cascade.rb

Constant Summary collapse

NOTFOUND = 
[404, { 'CONTENT-TYPE' => 'text/plain' }, []]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(apps, catch = [404, 405]) ⇒ Cascade

Returns a new instance of Cascade.



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# File 'lib/eldr/cascade.rb', line 10

def initialize(apps, catch = [404, 405])
  @apps    = []
  @has_app = {}

  apps.each { |app| add app }

  @catch = {}
  [*catch].each { |status| @catch[status] = true }
end

Instance Attribute Details

#apps ⇒ Object (readonly)

Returns the value of attribute apps.



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# File 'lib/eldr/cascade.rb', line 8

def apps
  @apps
end

Instance Method Details

#add(app) ⇒ Object Also known as: << 



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# File 'lib/eldr/cascade.rb', line 36

def add(app)
  @has_app[app] = true
  @apps << app
end

#call(env) ⇒ Object 



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# File 'lib/eldr/cascade.rb', line 20

def call(env)
  result = NOTFOUND

  last_body = nil

  @apps.each do |app|
    last_body.close if last_body.respond_to? :close

    result = app.call(env).to_a
    last_body = result[2]
    break unless @catch.include?(result[0].to_i)
  end

  result
end

#include?(app) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/eldr/cascade.rb', line 41

def include?(app)
  @has_app.include? app
end