我正在寻找的功能类似于Rails中的rake middleware
命令,除了通用机架应用程序。
这将返回所有机架应用程序(包括中间件)的列表:
require 'rack'
def middleware_classes(app)
r = [app]
while ((next_app = r.last.instance_variable_get(:@app)) != nil)
r << next_app
end
r.map{|e| e.instance_variable_defined?(:@app) ? e.class : e }
end
app = Rack::Builder.parse_file('config.ru').first
p middleware_classes(app)
$ rake middleware
use ActionDispatch::Static
use Rack::Lock
use #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x007ffd148f9468>
use Rack::Runtime
use Rack::MethodOverride
use ActionDispatch::RequestId
use Rails::Rack::Logger
use ActionDispatch::ShowExceptions
use ActionDispatch::DebugExceptions
use ActionDispatch::RemoteIp
use ActionDispatch::Reloader
use ActionDispatch::Callbacks
use ActiveRecord::Migration::CheckPending
use ActiveRecord::ConnectionAdapters::ConnectionManagement
use ActiveRecord::QueryCache
use ActionDispatch::Cookies
use ActionDispatch::Session::CookieStore
use ActionDispatch::Flash
use ActionDispatch::ParamsParser
use Rack::Head
use Rack::ConditionalGet
use Rack::ETag
run RackTest::Application.routes
http://pothibo.com/2013/11/ruby-on-rails-inside-actiondispatch-and-rack/
[如果您使用的是扩展了Sinatra::Base
的Sinatra应用程序,则必须使用迈克尔·黑尔(Michael Hale)的答案的稍作修改的版本:
require 'rack'
def middleware_classes(app)
r = [app]
while ((next_app = r.last.instance_variable_get(:@app)) != nil)
r << next_app
end
r.map{|e| e.instance_variable_defined?(:@app) ? e.class : e }
end
sinatra_app = Rack::Builder.parse_file('config.ru').first
sinatra_rack_builder = sinatra_app.build(sinatra_app)
sinatra_extended_app = sinatra_rack_builder.to_app
rack_app = sinatra_extended_app.app
pp middleware_classes(rack_app)
将其放入诸如dump_middleware.rb
之类的文件后,我能够按预期看到中间件:
$ bundle exec ruby ./dump_middleware.rb
[Rack::Head,
Rack::NullLogger,
Rack::Session::Cookie,
Rack::Protection::FrameOptions,
Rack::Protection::HttpOrigin,
Rack::Protection::IPSpoofing,
Rack::Protection::JsonCsrf,
Rack::Protection::PathTraversal,
Rack::Protection::RemoteToken,
Rack::Protection::SessionHijacking,
Rack::Protection::XSSHeader,
Warden::Manager,
SinatraApp]
可能会有更清洁的方法。
我早该知道了
here's a nice thread,明确的答案是最后一个帖子
根据Marc-Andre的评论更新:
以下是此link的最新帖子>>
机架没有这种机制,由于并非所有中间件都是通过@middleware添加的,因此Sinatra无法告诉您使用了哪种中间件。顺便说一句,rails也不行,它只能告诉您可行的方法。中间件不必是线性列表(即,使用Rack路由器或其他东西时)。