77 lines
3.3 KiB
Ruby
77 lines
3.3 KiB
Ruby
#--
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# Copyright (c) 2004 David Heinemeier Hansson
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#++
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# This class provides an interface for dispatching a CGI (or CGI-like) request
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# to the appropriate controller and action. It also takes care of resetting
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# the environment (when Dependencies.load? is true) after each request.
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class Dispatcher
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class << self
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# Dispatch the given CGI request, using the given session options, and
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# emitting the output via the given output.
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def dispatch(cgi = CGI.new, session_options = ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS, output = $stdout)
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begin
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request, response = ActionController::CgiRequest.new(cgi, session_options), ActionController::CgiResponse.new(cgi)
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prepare_application
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ActionController::Routing::Routes.recognize!(request).process(request, response).out(output)
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rescue Object => exception
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ActionController::Base.process_with_exception(request, response, exception).out(output)
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ensure
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reset_after_dispatch
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end
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end
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# Reset the application by clearing out loaded controllers, views, actions,
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# mailers, and so forth. This allows them to be loaded again without having
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# to restart the server (WEBrick, FastCGI, etc.).
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def reset_application!
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Controllers.clear!
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Dependencies.clear
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ActiveRecord::Base.reset_subclasses
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Dependencies.remove_subclasses_for(ActiveRecord::Base, ActiveRecord::Observer, ActionController::Base)
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Dependencies.remove_subclasses_for(ActionMailer::Base) if defined?(ActionMailer::Base)
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end
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private
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def prepare_application
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ActionController::Routing::Routes.reload if Dependencies.load?
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prepare_breakpoint
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Controllers.const_load!(:ApplicationController, "application") unless Controllers.const_defined?(:ApplicationController)
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end
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def reset_after_dispatch
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reset_application! if Dependencies.load?
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Breakpoint.deactivate_drb if defined?(BREAKPOINT_SERVER_PORT)
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end
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def prepare_breakpoint
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return unless defined?(BREAKPOINT_SERVER_PORT)
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require 'breakpoint'
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Breakpoint.activate_drb("druby://localhost:#{BREAKPOINT_SERVER_PORT}", nil, !defined?(FastCGI))
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true
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rescue
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nil
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end
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end
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end
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