Can you separate out the Thrift stuff into another file, and maybe write a unit test or two to make sure that it works outside of Rack/Rails?
- david On Fri, Jun 26, 2009 at 11:49 AM, <[email protected]> wrote: > > I am trying to integrate Thrift into our Rails app through the use of Rack, > as suggested in <a > href="https://issues.apache.org/jira/browse/THRIFT-468";>JIRA > THRIFT-468</a>. I am running into an error I just can't diagnose when > attempting to write from within the processor, where Thrift appears to be > trying to access the FIELDS element of a non-existent class, UserEmail. > There is a UserEmailRecord::FIELDS however, and the model includes a > UserEmail class which is in use. > > I've included what I believe are some of the relevant data. Please let me > know if there's anything else that may help me get to the bottom of this. > > Thanks, > Chris > > Status: 500 Internal Server Error > uninitialized constant UserEmail::FIELDS > > /Users/cwhite/devel/website/vendor/rails/activesupport/lib/active_support/dependencies.rb:105:in > `const_missing' > /opt/local/lib/ruby/site_ruby/1.8/thrift/processor.rb:52:in `write' > /opt/local/lib/ruby/site_ruby/1.8/thrift/processor.rb:52:in > `write_result' > > /Users/cwhite/devel/website/lib/thrift/gen-rb/user_email_service.rb:170:in > `process_getUserEmail' > /opt/local/lib/ruby/site_ruby/1.8/thrift/processor.rb:29:in `send' > /opt/local/lib/ruby/site_ruby/1.8/thrift/processor.rb:29:in `process' > /Users/cwhite/devel/website/lib/thrift/rack_useremail.rb:34:in `call' > > > The UserEmailRecord generated type: > > class UserEmailRecord > include ::Thrift::Struct > ID = 1 > EMAIL = 2 > > ::Thrift::Struct.field_accessor self, :id, :email > FIELDS = { > ID => {:type => ::Thrift::Types::I32, :name => 'id'}, > EMAIL => {:type => ::Thrift::Types::STRING, :name => 'email'} > } > > def struct_fields; FIELDS; end > > def validate > end > > end > > The middleware integration: > > module ThriftRackIntegration > class UserEmailHook > attr_reader :hook_path, :processor, :protocol_factory > > def initialize(app, options = {}) > @app = app > @processor = options[:processor] || > UserEmailService::Processor.new(UserEmailHandler.new) > @protocol_factory = options[:protocol_factory] || > Thrift::BinaryProtocolFactory.new > @hook_path = options[:hook_path] || "/rpc_api" > end > > def call(env) > request = Rack::Request.new(env) > > if request.post? && request.path == hook_path > output = StringIO.new > transport = Thrift::IOStreamTransport.new(request.body, output) > protocol = @protocol_factory.get_protocol(transport) > @processor.process(protocol, protocol) > output.rewind > response = Rack::Response.new(output) > response["Content-Type"] = "application/x-thrift" > response.finish > else > @app.call(env) > end > end > end > end > > > > > > >
