C++ TEventBase类代码示例

TEST(ThriftServer, IdleTimeoutAfterTest) {
  ScopedServerThread sst(getServer());

  TEventBase base;

  std::shared_ptr<TAsyncSocket> socket(
    TAsyncSocket::newSocket(&base, *sst.getAddress()));

  auto client_channel = HeaderClientChannel::newChannel(socket);
  auto client_channelp = client_channel.get();
  CloseChecker checker;

  client_channel->setCloseCallback(&checker);
  TestServiceAsyncClient client(std::move(client_channel));
  std::string ret;
  client.sync_sendResponse(ret, 20);

  EXPECT_FALSE(checker.getClosed());

  base.tryRunAfterDelay([&base](){
      base.terminateLoopSoon();
    }, 200);
  base.loopForever();
  EXPECT_TRUE(checker.getClosed());
  client_channelp->setCloseCallback(nullptr);
}

/**
 * Test SSL server accept timeout with cache path
 */
TEST(TAsyncSSLSocketTest, SSLServerCacheCloseTest) {
  // Start listening on a local port
  WriteCallbackBase writeCallback;
  ReadCallback readCallback(&writeCallback);
  HandshakeCallback handshakeCallback(&readCallback,
                                      HandshakeCallback::EXPECT_ERROR);
  SSLServerAsyncCacheAcceptCallback acceptCallback(&handshakeCallback);
  TestSSLAsyncCacheServer server(&acceptCallback, 500);

  // Set up SSL client
  TEventBase eventBase;
  std::shared_ptr<SSLClient> client(new SSLClient(&eventBase, server.getAddress(),
                                             2, 100));

  client->connect();
  EventBaseAborter eba(&eventBase, 3000);
  eventBase.loop();

  server.getEventBase().runInEventBaseThread([&handshakeCallback]{
      handshakeCallback.closeSocket();});
  // give time for the cache lookup to come back and find it closed
  usleep(500000);

  EXPECT_EQ(server.getAsyncCallbacks(), 1);
  EXPECT_EQ(server.getAsyncLookups(), 1);
  EXPECT_EQ(client->getErrors(), 1);
  EXPECT_EQ(client->getMiss(), 1);
  EXPECT_EQ(client->getHit(), 0);

  cerr << "SSLServerCacheCloseTest test completed" << endl;
}

/*
 * Test some timeouts that are scheduled on one timeout set, then moved to
 * another timeout set.
 */
TEST(TAsyncTimeoutSetTest, SwitchTimeoutSet) {
  TEventBase eventBase;
  StackTimeoutSet ts10(&eventBase, milliseconds(10));
  StackTimeoutSet ts5(&eventBase, milliseconds(5));

  TestTimeout t1(&ts5, &ts10, &ts5);
  TestTimeout t2(&ts10, &ts10, &ts5);
  TestTimeout t3(&ts5, &ts5, &ts10, &ts5);

  ts5.scheduleTimeout(&t1);

  TimePoint start;
  eventBase.loop();
  TimePoint end;

  ASSERT_EQ(t1.timestamps.size(), 3);
  ASSERT_EQ(t2.timestamps.size(), 3);
  ASSERT_EQ(t3.timestamps.size(), 4);

  T_CHECK_TIMEOUT(start, t1.timestamps[0], milliseconds(5));
  T_CHECK_TIMEOUT(t1.timestamps[0], t1.timestamps[1], milliseconds(10));
  T_CHECK_TIMEOUT(t1.timestamps[1], t1.timestamps[2], milliseconds(5));

  T_CHECK_TIMEOUT(start, t2.timestamps[0], milliseconds(10));
  T_CHECK_TIMEOUT(t2.timestamps[0], t2.timestamps[1], milliseconds(10));
  T_CHECK_TIMEOUT(t2.timestamps[1], t2.timestamps[2], milliseconds(5));

  T_CHECK_TIMEOUT(start, t3.timestamps[0], milliseconds(5));
  T_CHECK_TIMEOUT(t3.timestamps[0], t3.timestamps[1], milliseconds(5));
  T_CHECK_TIMEOUT(t3.timestamps[1], t3.timestamps[2], milliseconds(10));
  T_CHECK_TIMEOUT(t3.timestamps[2], t3.timestamps[3], milliseconds(5));

  // 10ms fudge factor to account for loaded machines
  T_CHECK_TIMEOUT(start, end, milliseconds(25), milliseconds(10));
}

TEST(ThriftServer, OnewayFutureClientTest) {
  using std::chrono::steady_clock;

  ScopedServerThread sst(getServer());
  TEventBase base;
  std::shared_ptr<TAsyncSocket> socket(
    TAsyncSocket::newSocket(&base, *sst.getAddress()));

  FutureServiceAsyncClient client(
    std::unique_ptr<HeaderClientChannel,
                    apache::thrift::async::TDelayedDestruction::Destructor>(
                      new HeaderClientChannel(socket)));

  auto future = client.future_noResponse(1000);
  steady_clock::time_point sent = steady_clock::now();

  // wait for future to finish.
  base.loop();
  steady_clock::time_point waited = steady_clock::now();

  future.value();
  steady_clock::time_point got = steady_clock::now();

  steady_clock::duration waitTime = waited - sent;
  steady_clock::duration gotTime = got - waited;

  int factor = 1;
  EXPECT_GE(waitTime, factor * gotTime);
}

// Test if multiple requests are pending in a queue, for security to establish,
// then we flow RequestContext correctly with each request.
void runRequestContextTest(bool failSecurity) {
  ScopedServerThread sst(getServer());
  TEventBase base;
  auto channel = getClientChannel(&base, *sst.getAddress(), failSecurity);
  TestServiceAsyncClient client(std::move(channel));
  Countdown c(2, [&base](){base.terminateLoopSoon();});

  // Send first request with a unique RequestContext. This would trigger
  // security. Rest of the request would queue behind it.
  folly::RequestContext::create();
  folly::RequestContext::get()->setContextData("first", nullptr);
  client.sendResponse([&base,&client,&c](ClientReceiveState&& state) {
    EXPECT_TRUE(folly::RequestContext::get()->hasContextData("first"));
    c.down();
  }, 10);

  // Send another request with a unique RequestContext. This request would
  // queue behind the first one inside HeaderClientChannel.
  folly::RequestContext::create();
  folly::RequestContext::get()->setContextData("second", nullptr);
  client.sendResponse([&base,&client,&c](ClientReceiveState&& state) {
    EXPECT_FALSE(folly::RequestContext::get()->hasContextData("first"));
    EXPECT_TRUE(folly::RequestContext::get()->hasContextData("second"));
    c.down();
  }, 10);

  // Now start looping the eventbase to guarantee that all the above requests
  // would always queue.
  base.loopForever();
}

void AsyncCpp2Test(bool enable_security) {
  apache::thrift::TestThriftServerFactory<TestInterface> factory;
  ScopedServerThread sst(factory.create());
  TEventBase base;
  std::shared_ptr<TAsyncSocket> socket(
    TAsyncSocket::newSocket(&base, *sst.getAddress()));

  auto client_channel = HeaderClientChannel::newChannel(socket);
  if (enable_security) {
    client_channel->setSecurityPolicy(THRIFT_SECURITY_PERMITTED);
    client_channel->setSaslClient(std::unique_ptr<SaslClient>(
      new StubSaslClient(socket->getEventBase())
    ));
  }
  TestServiceAsyncClient client(std::move(client_channel));

  boost::polymorphic_downcast<HeaderClientChannel*>(
    client.getChannel())->setTimeout(10000);
  client.sendResponse([&](ClientReceiveState&& state) {
    std::string response;
    try {
      TestServiceAsyncClient::recv_sendResponse(
          response, state);
    } catch(const std::exception& ex) {
    }
    EXPECT_EQ(response, "test64");
  }, 64);
  base.loop();
}

TEST(Duplex, DuplexTest) {
  enum {START=1, COUNT=10, INTERVAL=5};
  ScopedServerThread sst(getServer());
  TEventBase base;

  std::shared_ptr<TAsyncSocket> socket(
    TAsyncSocket::newSocket(&base, *sst.getAddress()));

  auto duplexChannel =
     std::make_shared<DuplexChannel>(DuplexChannel::Who::CLIENT, socket);
  DuplexServiceAsyncClient client(duplexChannel->getClientChannel());

  bool success = false;
  ThriftServer clients_server(duplexChannel->getServerChannel());
  clients_server.setInterface(std::make_shared<DuplexClientInterface>(
      START, COUNT, success));
  clients_server.serve();

  client.registerForUpdates([](ClientReceiveState&& state) {
    EXPECT_FALSE(state.isException());
    bool res = DuplexServiceAsyncClient::recv_registerForUpdates(state);
    EXPECT_TRUE(res);
  }, START, COUNT, INTERVAL);

  // fail on time out
  base.tryRunAfterDelay([] {EXPECT_TRUE(false);}, 5000);

  base.loopForever();

  EXPECT_TRUE(success);
}

TEST(ThriftServer, CallbackOrderingTest) {
  apache::thrift::TestThriftServerFactory<TestInterface> factory;
  auto server = factory.create();
  auto serverHandler = std::make_shared<TestServerEventHandler>();


  TProcessorBase::addProcessorEventHandlerFactory(serverHandler);
  server->setServerEventHandler(serverHandler);

  ScopedServerThread sst(server);
  TEventBase base;
  std::shared_ptr<TAsyncSocket> socket(
    TAsyncSocket::newSocket(&base, *sst.getAddress()));

  TestServiceAsyncClient client(
    std::unique_ptr<HeaderClientChannel,
                    apache::thrift::async::TDelayedDestruction::Destructor>(
                      new HeaderClientChannel(socket)));

  client.noResponse([](ClientReceiveState&& state){}, 10000);
  base.tryRunAfterDelay([&](){
    socket->closeNow();
  }, 1);
  base.tryRunAfterDelay([&](){
    base.terminateLoopSoon();
  }, 20);
  base.loopForever();
  serverHandler->check();
  TProcessorBase::removeProcessorEventHandlerFactory(serverHandler);
}

int main(int argc, char **argv) {


    TEventBase base;

    int port = 8082;

    std::shared_ptr<TAsyncSocket> socket(
            TAsyncSocket::newSocket(&base, "127.0.0.1", port));

    auto client_channel = HeaderClientChannel::newChannel(socket);
    CalculatorAsyncClient client(std::move(client_channel));

    folly::wangle::Future<int64_t> f = client.future_add(2, 3);

    

    f.then(
        [](Try<int64_t>&& t) {
            std::cout << "Result = " << t.value() << std::endl;
        }
    );

    // Run a single iteration of the event loop, in reality, this would be a 
    // nearly infinite loop, where we stop the looping when the client should terminate
    base.loopForever();

}

TEST(RequestContext, SimpleTest) {
  TEventBase base;

  EXPECT_FALSE(RequestContext::create());
  EXPECT_TRUE(RequestContext::create());
  EXPECT_TRUE(RequestContext::get() != nullptr);

  EXPECT_EQ(nullptr, RequestContext::get()->getContextData("test"));

  RequestContext::get()->setContextData(
    "test",
    std::unique_ptr<TestData>(new TestData(10)));
  base.runInEventBaseThread([&](){
      EXPECT_TRUE(RequestContext::get() != nullptr);
      auto data = dynamic_cast<TestData*>(
        RequestContext::get()->getContextData("test"))->data_;
      EXPECT_EQ(10, data);
      base.terminateLoopSoon();
    });
  auto th = std::thread([&](){
      base.loopForever();
  });
  th.join();
  EXPECT_TRUE(RequestContext::get() != nullptr);
  auto a = dynamic_cast<TestData*>(
    RequestContext::get()->getContextData("test"));
  auto data = a->data_;
  EXPECT_EQ(10, data);

  RequestContext::setContext(std::shared_ptr<RequestContext>());
  // There should always be a default context
  EXPECT_TRUE(nullptr != RequestContext::get());
}

void TEventServer::stop() {
  // TODO: We really need a memory fence or some locking here to ensure that
  // the compiler doesn't optimize out eventBase.  In practice, most users will
  // only call stop() when the server is actually serving, so this shouldn't be
  // much of an issue.
  TEventBase* eventBase = serveEventBase_;
  if (eventBase) {
    eventBase->terminateLoopSoon();
  }
}

void runTest(std::function<void(HeaderClientChannel* channel)> setup) {
  ScopedServerThread sst(getServer());
  TEventBase base;
  auto channel = getClientChannel(&base, *sst.getAddress());
  setup(channel.get());
  TestServiceAsyncClient client(std::move(channel));
  Countdown c(3, [&base](){base.terminateLoopSoon();});

  client.sendResponse([&base,&client,&c](ClientReceiveState&& state) {
    EXPECT_FALSE(state.isException());
    EXPECT_TRUE(state.isSecurityActive());
    std::string res;
    try {
      TestServiceAsyncClient::recv_sendResponse(res, state);
    } catch(const std::exception&) {
      EXPECT_TRUE(false);
    }
    EXPECT_EQ(res, "10");
    c.down();
  }, 10);


  // fail on time out
  base.tryRunAfterDelay([] {EXPECT_TRUE(false);}, 5000);

  base.tryRunAfterDelay([&client,&base,&c] {
    client.sendResponse([&base,&c](ClientReceiveState&& state) {
      EXPECT_FALSE(state.isException());
      EXPECT_TRUE(state.isSecurityActive());
      std::string res;
      try {
        TestServiceAsyncClient::recv_sendResponse(res, state);
      } catch(const std::exception&) {
        EXPECT_TRUE(false);
      }
      EXPECT_EQ(res, "10");
      c.down();
    }, 10);
    client.sendResponse([&base,&c](ClientReceiveState&& state) {
      EXPECT_FALSE(state.isException());
      EXPECT_TRUE(state.isSecurityActive());
      std::string res;
      try {
        TestServiceAsyncClient::recv_sendResponse(res, state);
      } catch(const std::exception&) {
        EXPECT_TRUE(false);
      }
      EXPECT_EQ(res, "10");
      c.down();
    }, 10);
  }, 1);

  base.loopForever();
}

 void async_tm_update(unique_ptr<HandlerCallback<int32_t>> callback,
                      int32_t currentIndex) override {
   auto callbackp = callback.release();
   EXPECT_EQ(currentIndex, expectIndex_);
   expectIndex_++;
   TEventBase *eb = callbackp->getEventBase();
   callbackp->resultInThread(currentIndex);
   if (expectIndex_ == lastIndex_) {
     success_ = true;
     eb->runInEventBaseThread([eb] { eb->terminateLoopSoon(); });
   }
 }

int main() {
  TEventBase base;

  const int ports[] = { 9090, 9091, 9092, 9093, 9094 };
  const char *hosts[] = {"127.0.0.1", "127.0.0.1", "127.0.0.1", "127.0.0.1", "127.0.0.1"};
  unsigned char* images[5];
  int cur_pos = 0;

  std::vector<std::shared_ptr<TAsyncSocket>> sockets;
  std::vector<std::shared_ptr<aobench::cpp2::AobenchServiceAsyncClient>> clients;
  for (int i = 0; i < 5; ++i) {
    std::shared_ptr<TAsyncSocket> socket(
      TAsyncSocket::newSocket(&base, hosts[i], ports[i]));
    sockets.push_back(socket);

    auto client_channel = HeaderClientChannel::newChannel(socket);
    auto client = std::make_shared<aobench::cpp2::AobenchServiceAsyncClient>(std::move(client_channel));
    clients.push_back(client);

    client->render(
        [&](ClientReceiveState&& state) {
          std::string result;
          fprintf(stderr, "received\n");
          try {
            aobench::cpp2::AobenchServiceAsyncClient::recv_render(result, state);

            unsigned char* img = new unsigned char [result.size()];
            for (int i = 0; i < static_cast<int>(result.size()); ++i) {
              img[i] = static_cast<unsigned char>(result[i]);
            }
            images[cur_pos] = img;
            ++cur_pos;
            if (cur_pos == 5) {
              saveppm_sum("ao.ppm", 256, 256, images, 5);
              for (int i = 0; i < 5; ++i) {
                delete[] images[i];
              }
              fprintf(stderr, "accumulated\n");
            }
          } catch(const std::exception& ex) {
            fprintf(stderr, "exception thrown %s\n", ex.what());
          }
        }, 256, 256, 2);
  }
  fprintf(stderr, "started\n");
  base.loop();
  fprintf(stderr, "finished\n");
}

TEST(ThriftServer, IdleTimeoutTest) {

  TEventBase base;

  auto port = Server::get(getServer)->getAddress().getPort();
  std::shared_ptr<TAsyncSocket> socket(
    TAsyncSocket::newSocket(&base, "127.0.0.1", port));

  auto client_channel = HeaderClientChannel::newChannel(socket);
  CloseChecker checker;
  client_channel->setCloseCallback(&checker);
  base.runAfterDelay([&base](){
      base.terminateLoopSoon();
    }, 100);
  base.loopForever();
  EXPECT_TRUE(checker.getClosed());
}