// Instantiate tracer
Tracer tracer = ...

// Optionally register tracer with GlobalTracer
GlobalTracer.register(tracer);

// Decorate TProcessor with SpanProcessor e.g.
TProcessor processor = ...
TProcessor spanProcessor = new SpanProcessor(processor, tracer);
TServerTransport transport = ...
TServer server = new TSimpleServer(new Args(transport).processor(spanProcessor));

// Decorate TProtocol with SpanProtocol e.g.

TTransport transport = ...
TProtocol protocol = new TBinaryProtocol(transport);
TProtocol spanProtocol = new SpanProtocol(protocol, tracer)

// Decorate TProcessor with SpanProcessor
TProcessor processor = ...
TProcessor spanProcessor = new SpanProcessor(processor, tracer);

TNonblockingServerSocket tnbSocketTransport = new TNonblockingServerSocket(8890, 30000);
TNonblockingServer.Args tnbArgs = new TNonblockingServer.Args(tnbSocketTransport);
tnbArgs.processor(spanProcessor);
TServer server = new TNonblockingServer(tnbArgs);

// Decorate TProtocolFactory with SpanProtocol.Factory
TProtocolFactory factory = new TBinaryProtocol.Factory();
SpanProtocol.Factory protocolFactory = new SpanProtocol.Factory(factory, tracer, false);

TNonblockingTransport transport = new TNonblockingSocket("localhost", 8890);
TAsyncClientManager clientManager = new TAsyncClientManager();
AsyncClient asyncClient = new AsyncClient(protocolFactory, clientManager, transport);

// Decorate AsyncMethodCallback with TracingAsyncMethodCallback:
AsyncMethodCallback<T> callback = ...
TracingAsyncMethodCallback<T> tracingCallback = new TracingAsyncMethodCallback(callback, protocolFactory);

asyncClient.callMethod(..., tracingCallback);

class MyClientSpanDecorator implements ClientSpanDecorator {
    
    @Override
    public void decorate(Span span, TMessage message) {
        // Add custom tags to the span.
    }
    
    @Override
    public void onError(Throwable throwable, Span span) {
        // Add custom tags for when an error is thrown by the thrift call.
    }
}

TProtocol spanProtocol = new SpanProtocol(protocol, tracer, new MyClientSpanDecorator() );