public void run()

in tchannel-example/src/main/java/com/uber/tchannel/ping/PingClient.java [80:119]
36 lines of code
4 McCabe index (conditional complexity)

    public void run() throws Exception {
        TChannel tchannel = new TChannel.Builder("ping-client").build();
        SubChannel subChannel = tchannel.makeSubChannel("ping-server");
        final ConcurrentHashMap<String, AtomicInteger> msgs = new ConcurrentHashMap<>();
        final CountDownLatch done = new CountDownLatch(requests);

        for (int i = 0; i < requests; i++) {
            JsonRequest<Ping> request = new JsonRequest.Builder<Ping>("ping-server", "ping")
                .setBody(new Ping("{'key': 'ping?'}"))
                .setHeader("some", "header")
                .setTimeout(100 + i)
                .build();
            TFuture<JsonResponse<Pong>> f = subChannel.send(
                    request,
                    InetAddress.getByName(host),
                    port
                );

            f.addCallback(new TFutureCallback<JsonResponse<Pong>>() {
                @Override
                public void onResponse(JsonResponse<Pong> pongResponse) {
                    done.countDown();
                    String msg = pongResponse.toString();
                    AtomicInteger count = msgs.putIfAbsent(msg, new AtomicInteger(1));
                    if (count != null) {
                        count.incrementAndGet();
                    }
                }
            });
        }

        done.await();
        for (Map.Entry<String, AtomicInteger> stringIntegerEntry : msgs.entrySet()) {
            System.out.println(String.format("%s%n\tcount:%s",
                stringIntegerEntry.getKey(), stringIntegerEntry.getValue()
            ));
        }

        tchannel.shutdown(false);
    }