From 674a740877203e52cd621029058046dcdb48dd8a Mon Sep 17 00:00:00 2001
From: Yingxin Cheng <yingxincheng@gmail.com>
Date: Thu, 28 Mar 2019 23:26:12 +0800
Subject: [PATCH] crimson/net: apple-to-apple server async-msgr

The simplest async-msgr server which will have the same behavior with
crimson-msgr server for apple-to-apple performance test.

Signed-off-by: Yingxin Cheng <yingxincheng@gmail.com>
---
 src/test/crimson/CMakeLists.txt     |   3 +
 src/test/crimson/perf_async_msgr.cc | 113 ++++++++++++++++++++++++++++
 2 files changed, 116 insertions(+)
 create mode 100644 src/test/crimson/perf_async_msgr.cc

diff --git a/src/test/crimson/CMakeLists.txt b/src/test/crimson/CMakeLists.txt
index 69545d5fe82..34994cd7d4c 100644
--- a/src/test/crimson/CMakeLists.txt
+++ b/src/test/crimson/CMakeLists.txt
@@ -15,6 +15,9 @@ target_link_libraries(unittest_seastar_messenger ceph-common crimson)
 add_executable(perf_crimson_msgr perf_crimson_msgr.cc)
 target_link_libraries(perf_crimson_msgr ceph-common crimson)
 
+add_executable(perf_async_msgr perf_async_msgr.cc)
+target_link_libraries(perf_async_msgr ceph-common global)
+
 add_executable(unittest_seastar_echo
   test_alien_echo.cc)
 target_link_libraries(unittest_seastar_echo crimson)
diff --git a/src/test/crimson/perf_async_msgr.cc b/src/test/crimson/perf_async_msgr.cc
new file mode 100644
index 00000000000..ca5780c23b5
--- /dev/null
+++ b/src/test/crimson/perf_async_msgr.cc
@@ -0,0 +1,113 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:nil -*-
+
+#include <boost/program_options/variables_map.hpp>
+#include <boost/program_options/parsers.hpp>
+
+#include "auth/Auth.h"
+#include "global/global_init.h"
+#include "msg/Dispatcher.h"
+#include "msg/Messenger.h"
+#include "messages/MOSDOp.h"
+#include "messages/MOSDOpReply.h"
+
+#include "auth/DummyAuth.h"
+
+namespace {
+
+constexpr int CEPH_OSD_PROTOCOL = 10;
+
+struct Server {
+  Server(CephContext* cct)
+    : dummy_auth(cct), dispatcher(cct)
+  {
+    msgr.reset(Messenger::create(cct, "async", entity_name_t::OSD(0), "server", 0, 0));
+    dummy_auth.auth_registry.refresh_config();
+    msgr->set_cluster_protocol(CEPH_OSD_PROTOCOL);
+    msgr->set_default_policy(Messenger::Policy::stateless_server(0));
+    msgr->set_auth_client(&dummy_auth);
+    msgr->set_auth_server(&dummy_auth);
+    dispatcher.ms_set_require_authorizer(false);
+  }
+  DummyAuthClientServer dummy_auth;
+  unique_ptr<Messenger> msgr;
+  struct ServerDispatcher : Dispatcher {
+    ServerDispatcher(CephContext* cct)
+      : Dispatcher(cct)
+    {}
+    bool ms_can_fast_dispatch_any() const override {
+      return true;
+    }
+    bool ms_can_fast_dispatch(const Message* m) const override {
+      return m->get_type() == CEPH_MSG_OSD_OP;
+    }
+    void ms_fast_dispatch(Message* m) override {
+      ceph_assert(m->get_type() == CEPH_MSG_OSD_OP);
+      MOSDOp *req = static_cast<MOSDOp*>(m);
+      m->get_connection()->send_message(new MOSDOpReply(req, 0, 0, 0, false));
+      m->put();
+    }
+    bool ms_dispatch(Message*) override {
+      ceph_abort();
+    }
+    bool ms_handle_reset(Connection*) override {
+      return true;
+    }
+    void ms_handle_remote_reset(Connection*) override {
+    }
+    bool ms_handle_refused(Connection*) override {
+      return true;
+    }
+  } dispatcher;
+};
+
+}
+
+static void run(CephContext* cct, entity_addr_t addr)
+{
+  std::cout << "async server listening at " << addr << std::endl;
+  Server server{cct};
+  server.msgr->bind(addr);
+  server.msgr->add_dispatcher_head(&server.dispatcher);
+  server.msgr->start();
+  server.msgr->wait();
+}
+
+int main(int argc, char** argv)
+{
+  namespace po = boost::program_options;
+  po::options_description desc{"Allowed options"};
+  desc.add_options()
+    ("help,h", "show help message")
+    ("addr", po::value<std::string>()->default_value("v1:0.0.0.0:9010"),
+     "server address");
+  po::variables_map vm;
+  std::vector<std::string> unrecognized_options;
+  try {
+    auto parsed = po::command_line_parser(argc, argv)
+      .options(desc)
+      .allow_unregistered()
+      .run();
+    po::store(parsed, vm);
+    if (vm.count("help")) {
+      std::cout << desc << std::endl;
+      return 0;
+    }
+    po::notify(vm);
+    unrecognized_options = po::collect_unrecognized(parsed.options, po::include_positional);
+  } catch(const po::error& e) {
+    std::cerr << "error: " << e.what() << std::endl;
+    return 1;
+  }
+
+  auto addr = vm["addr"].as<std::string>();
+  entity_addr_t target_addr;
+  target_addr.parse(addr.c_str(), nullptr);
+
+  std::vector<const char*> args(argv, argv + argc);
+  auto cct = global_init(nullptr, args,
+                         CEPH_ENTITY_TYPE_CLIENT,
+                         CODE_ENVIRONMENT_UTILITY,
+                         CINIT_FLAG_NO_MON_CONFIG);
+  common_init_finish(cct.get());
+  run(cct.get(), target_addr);
+}