Class: Mongrel::Rails::RailsHandler

### Home Classes Methods

### In Files

- lib/mongrel/rails.rb

### Parent

Mongrel::HttpHandler

### Methods

- ::new
- #process
- #reload!

### Files

- CHANGELOG
- COPYING
- LICENSE
- README
- Makefile

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No matching classes.

# Mongrel::Rails::RailsHandler

Implements a handler that can run Rails and serve files out of the Rails application's public directory. This lets you run your Rails application with Mongrel during development and testing, then use it also in production behind a server that's better at serving the static files.

The RailsHandler takes a mime_map parameter which is a simple suffix=mimetype mapping that it should add to the list of valid mime types.

It also supports page caching directly and will try to resolve a request in the following order:

- If the requested exact PATH_INFO exists as a file then serve it.

- If it exists at PATH_INFO+".html" exists then serve that.

- Finally, construct a Mongrel::CGIWrapper and run Dispatcher.dispatch to have Rails go.

This means that if you are using page caching it will actually work with Mongrel and you should see a decent speed boost (but not as fast as if you use a static server like Apache or Litespeed).

### Attributes

files[R]
guard[R]

### Public Class Methods

new(dir, mime_map = {}) click to toggle source

    # File lib/mongrel/rails.rb, line 37
    def initialize(dir, mime_map = {})
      @files = Mongrel::DirHandler.new(dir,false)
      @guard = Mutex.new

      # Register the requested MIME types
      mime_map.each {|k,v| Mongrel::DirHandler::add_mime_type(k,v) }
    end

### Public Instance Methods

process(request, response) click to toggle source

Attempts to resolve the request as follows:

- If the requested exact PATH_INFO exists as a file then serve it.

- If it exists at PATH_INFO+".html" exists then serve that.

- Finally, construct a Mongrel::CGIWrapper and run Dispatcher.dispatch to have Rails go.

    # File lib/mongrel/rails.rb, line 50
    def process(request, response)
      return if response.socket.closed?

      path_info = request.params[Mongrel::Const::PATH_INFO]
      rest_operator = request.params[Mongrel::Const::REQUEST_URI][/^#{Regexp.escape path_info}(;[^\?]+)/, 1].to_s
      path_info.chomp!("/")

      page_cached = path_info + rest_operator + ActionController::Base.page_cache_extension
      get_or_head = @@file_only_methods.include? request.params[Mongrel::Const::REQUEST_METHOD]

      if get_or_head and @files.can_serve(path_info)
        # File exists as-is so serve it up
        @files.process(request,response)
      elsif get_or_head and @files.can_serve(page_cached)
        # Possible cached page, serve it up
        request.params[Mongrel::Const::PATH_INFO] = page_cached
        @files.process(request,response)
      else
        begin
          cgi = Mongrel::CGIWrapper.new(request, response)
          cgi.handler = self
          # We don't want the output to be really final until we're out of the lock
          cgi.default_really_final = false

          @guard.synchronize {
            @active_request_path = request.params[Mongrel::Const::PATH_INFO]
            Dispatcher.dispatch(cgi, ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS, response.body)
            @active_request_path = nil
          }

          # This finalizes the output using the proper HttpResponse way
          cgi.out("text/html",true) {""}
        rescue Errno::EPIPE
          response.socket.close
        rescue Object => rails_error
          STDERR.puts "#{Time.now}: Error calling Dispatcher.dispatch #{rails_error.inspect}"
          STDERR.puts rails_error.backtrace.join("\n")
        end
      end
    end

reload!() click to toggle source

Does the internal reload for Rails. It might work for most cases, but sometimes you get exceptions. In that case just do a real restart.

    # File lib/mongrel/rails.rb, line 93
    def reload!
      begin
        @guard.synchronize {
          $".replace $orig_dollar_quote
          GC.start
          Dispatcher.reset_application!
          ActionController::Routing::Routes.reload
        }
      end
    end

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