Class: Useless::Doc::Proxy::Subject

Inherits:
Object
  • Object
show all
Defined in:
lib/useless/doc/proxy/subject.rb

Overview

Doc::Proxy::Subject retrieves a Doc::Core entity based upon ‘useless.doc.url’, from a environment-appropriate Doc::Client, and sets it to ‘useless.doc.subject’.

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Subject

Returns a new instance of Subject.



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# File 'lib/useless/doc/proxy/subject.rb', line 12

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/useless/doc/proxy/subject.rb', line 16

def call(env)
  client = case ENV['RACK_ENV']
    when 'production'; Useless::Doc::Client.standard
    else               Useless::Doc::Client.stub
  end

  if env['useless.doc.logger']
    env['useless.doc.logger'].debug "selected Client: #{client.inspect}"
  end

  if env['useless.doc.subject'] = client.get(env['useless.doc.url'])
    if env['useless.doc.logger']
      env['useless.doc.logger'].info "retrieved subject for #{env['useless.doc.url']}"
      env['useless.doc.logger'].debug "retrieved subject: #{env['useless.doc.subject'].inspect}"
    end

    @app.call(env)
  else
    [404, {'Content-Type' => 'text/plain'}, ['Could not retrieve documentation.']]
  end
end