Session management in Thrift

Question

I can't seem to find any documentation on how session management is supposed to be done in Thrift's RPC framework.

I know I can do a

TServer.setServerEventHandler(myEventHandler);

and observe calls to createContext (called when a connection is established) and processContext (called before every method call). Still, I have to get whatever session state I maintain in those message into the handler itself.

So how can I access session information in my handlers?

Answer 1

Not sure if there isn't also a way to use the ServerEventHandler approach mentioned in my question, but here's how I was able to create one handler per connection.

Rather than providing a singleton processor instance, containing a handler instance, once, like this:

XProcessor<XHandler> processor = new X.Processor<XHandler>(new XHandler());
TServer server = new TSimpleServer(new TServer.Args(serverTransport)
    .processor(processor));

I instead create and provide a TProcessorFactory:

TProcessorFactory processorFactory = new TProcessorFactory(null)
{
    public TProcessor getProcessor(TTransport trans)
    {
        return new X.Processor<XHandler>(new XHandler());
    }
};
TServer server = new TSimpleServer(new TServer.Args(serverTransport)
    .processorFactory(processorFactory));