ndn-handle: Implement TCP backdoor to inject data packets into repo

Change-Id: I74d0698f914a2e68d47ede427c7f36b3ba3b4f47
Refs: #1485
diff --git a/tests/tcp-bulk-insert-handle.cpp b/tests/tcp-bulk-insert-handle.cpp
new file mode 100644
index 0000000..ffe002b
--- /dev/null
+++ b/tests/tcp-bulk-insert-handle.cpp
@@ -0,0 +1,172 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (C) 2014 Regents of the University of California.
+ * See COPYING for copyright and distribution information.
+ */
+
+#include "../ndn-handle/tcp-bulk-insert-handle.hpp"
+
+#include "sqlite-fixture.hpp"
+#include "dataset-fixtures.hpp"
+
+#include <boost/test/unit_test.hpp>
+
+namespace repo {
+namespace tests {
+
+BOOST_AUTO_TEST_SUITE(TcpBulkInsertHandle)
+
+class TcpClient
+{
+public:
+  TcpClient()
+    : socket(ioService)
+  {
+  }
+
+  void
+  start(const std::string& host, const std::string& port)
+  {
+    using namespace boost::asio;
+
+    ip::tcp::resolver resolver(ioService);
+    ip::tcp::resolver::query query(host, port);
+
+    ip::tcp::resolver::iterator endpoint = resolver.resolve(query);
+    ip::tcp::resolver::iterator end;
+
+    if (endpoint == end)
+      BOOST_FAIL("Cannot resolve [" + host + ":" + port + "]");
+
+    ip::tcp::endpoint serverEndpoint = *endpoint;
+
+    socket.async_connect(serverEndpoint,
+                         bind(&TcpClient::onSuccessfullConnect, this, _1));
+  }
+
+  virtual void
+  onSuccessfullConnect(const boost::system::error_code& error)
+  {
+    if (error)
+      {
+        BOOST_FAIL("TCP connection aborted");
+        return;
+      }
+  }
+
+public:
+  boost::asio::io_service ioService;
+  boost::asio::ip::tcp::socket socket;
+};
+
+template<class Dataset>
+class TcpBulkInsertFixture : public TcpClient,
+                             public SqliteFixture,
+                             public Dataset
+{
+public:
+  TcpBulkInsertFixture()
+    : scheduler(ioService)
+    , bulkInserter(ioService, *handle)
+  {
+    guardEvent = scheduler.scheduleEvent(ndn::time::seconds(2),
+                                         bind(&TcpBulkInsertFixture::fail, this, "Test timed out"));
+  }
+
+  virtual void
+  onSuccessfullConnect(const boost::system::error_code& error)
+  {
+    TcpClient::onSuccessfullConnect(error);
+
+    // This value may need to be adjusted if some dataset exceeds 100k
+    socket.set_option(boost::asio::socket_base::send_buffer_size(100000));
+
+    // Initially I wrote the following to use scatter-gather approach (using
+    // std::vector<const_buffer> and a single socket.async_send operation). Unfortunately, as
+    // described in http://www.boost.org/doc/libs/1_48_0/doc/html/boost_asio/overview/implementation.html,
+    // scatter-gather is limited to at most `min(64,IOV_MAX)` buffers to be transmitted
+    // in a single operation
+    for (typename Dataset::DataContainer::iterator i = this->data.begin();
+         i != this->data.end(); ++i) {
+
+      socket.async_send(boost::asio::buffer((*i)->wireEncode().wire(),  (*i)->wireEncode().size()),
+                        bind(&TcpBulkInsertFixture::onSendFinished, this, _1, false));
+    }
+
+    socket.async_send(boost::asio::buffer(static_cast<const uint8_t*>(0), 0),
+                      bind(&TcpBulkInsertFixture::onSendFinished, this, _1, true));
+  }
+
+  void
+  onSendFinished(const boost::system::error_code& error, bool isFinal)
+  {
+    if (error) {
+      BOOST_FAIL("TCP connection aborted");
+      return;
+    }
+
+    if (isFinal) {
+      scheduler.cancelEvent(guardEvent);
+
+      // In case there are some outstanding handlers
+      // ioService.post(bind(&TcpBulkInsertFixture::stop, this));
+      scheduler.scheduleEvent(ndn::time::seconds(1),
+                              bind(&TcpBulkInsertFixture::stop, this));
+    }
+  }
+
+  void
+  fail(const std::string& info)
+  {
+    ioService.stop();
+    BOOST_FAIL(info);
+  }
+
+  void
+  stop()
+  {
+    // Terminate test
+    socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both);
+    socket.close();
+
+    bulkInserter.stop();
+    // may be ioService.stop() as well
+  }
+
+public:
+  Scheduler scheduler;
+  ndn::EventId guardEvent;
+  repo::TcpBulkInsertHandle bulkInserter;
+};
+
+
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(BulkInsertAndRead, T, DatasetFixtures, TcpBulkInsertFixture<T>)
+{
+  BOOST_TEST_MESSAGE(T::getName());
+  // BOOST_CHECK_EQUAL(this->handle->size(), 1);
+
+  // start bulk inserter
+  this->bulkInserter.listen("localhost", "17376");
+
+  // start test
+  this->start("localhost", "17376");
+
+  // actually run the test
+  this->ioService.run();
+
+  BOOST_CHECK_EQUAL(this->handle->size(), this->data.size());
+
+  // Read (all items should exist)
+  for (typename T::InterestContainer::iterator i = this->interests.begin();
+       i != this->interests.end(); ++i) {
+    ndn::Data retrievedData;
+    BOOST_REQUIRE_EQUAL(this->handle->readData(i->first, retrievedData), true);
+    BOOST_CHECK_EQUAL(retrievedData, *i->second);
+  }
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace repo
+} // namespace tests