Project

General

Profile

Download (71.3 KB)

Bug #41044 ยป test_msgr.cc

bingyi zhang, 08/01/2019 09:10 AM

 
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2014 UnitedStack <haomai@unitedstack.com>
*
* Author: Haomai Wang <haomaiwang@gmail.com>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/

#include <atomic>
#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
#include <set>
#include <list>
#include "common/Mutex.h"
#include "common/Cond.h"
#include "common/ceph_argparse.h"
#include "global/global_init.h"
#include "msg/Dispatcher.h"
#include "msg/msg_types.h"
#include "msg/Message.h"
#include "msg/Messenger.h"
#include "msg/Connection.h"
#include "messages/MPing.h"
#include "messages/MCommand.h"

#include <boost/random/mersenne_twister.hpp>
#include <boost/random/uniform_int.hpp>
#include <boost/random/binomial_distribution.hpp>
#include <gtest/gtest.h>

typedef boost::mt11213b gen_type;

#include "common/dout.h"
#include "include/ceph_assert.h"

#include "auth/DummyAuth.h"

#define dout_subsys ceph_subsys_ms
#undef dout_prefix
#define dout_prefix *_dout << " ceph_test_msgr "


#if GTEST_HAS_PARAM_TEST

#define CHECK_AND_WAIT_TRUE(expr) do { \
int n = 1000; \
while (--n) { \
if (expr) \
break; \
usleep(1000); \
} \
} while(0);

class MessengerTest : public ::testing::TestWithParam<const char*> {
public:
DummyAuthClientServer dummy_auth;
Messenger *server_msgr;
Messenger *client_msgr;

MessengerTest() : dummy_auth(g_ceph_context),
server_msgr(NULL), client_msgr(NULL) {
dummy_auth.auth_registry.refresh_config();
}
void SetUp() override {
lderr(g_ceph_context) << __func__ << " start set up " << GetParam() << dendl;
server_msgr = Messenger::create(g_ceph_context, string(GetParam()), entity_name_t::OSD(0), "server", getpid(), 0);
client_msgr = Messenger::create(g_ceph_context, string(GetParam()), entity_name_t::CLIENT(-1), "client", getpid(), 0);
server_msgr->set_default_policy(Messenger::Policy::stateless_server(0));
client_msgr->set_default_policy(Messenger::Policy::lossy_client(0));
server_msgr->set_auth_client(&dummy_auth);
server_msgr->set_auth_server(&dummy_auth);
client_msgr->set_auth_client(&dummy_auth);
client_msgr->set_auth_server(&dummy_auth);
}
void TearDown() override {
ASSERT_EQ(server_msgr->get_dispatch_queue_len(), 0);
ASSERT_EQ(client_msgr->get_dispatch_queue_len(), 0);
delete server_msgr;
delete client_msgr;
}

};


class FakeDispatcher : public Dispatcher {
public:
struct Session : public RefCountedObject {
atomic<uint64_t> count;
ConnectionRef con;

explicit Session(ConnectionRef c): RefCountedObject(g_ceph_context), count(0), con(c) {
}
uint64_t get_count() { return count; }
};

Mutex lock;
Cond cond;
bool is_server;
bool got_new;
bool got_remote_reset;
bool got_connect;
bool loopback;
entity_addrvec_t last_accept;

explicit FakeDispatcher(bool s): Dispatcher(g_ceph_context), lock("FakeDispatcher::lock"),
is_server(s), got_new(false), got_remote_reset(false),
got_connect(false), loopback(false) {
// don't need authorizers
ms_set_require_authorizer(false);
}
bool ms_can_fast_dispatch_any() const override { return true; }
bool ms_can_fast_dispatch(const Message *m) const override {
switch (m->get_type()) {
case CEPH_MSG_PING:
return true;
default:
return false;
}
}

void ms_handle_fast_connect(Connection *con) override {
lock.Lock();
lderr(g_ceph_context) << __func__ << " " << con << dendl;
auto s = con->get_priv();
if (!s) {
auto session = new Session(con);
con->set_priv(RefCountedPtr{session, false});
lderr(g_ceph_context) << __func__ << " con: " << con
<< " count: " << session->count << dendl;
}
got_connect = true;
cond.Signal();
lock.Unlock();
}
void ms_handle_fast_accept(Connection *con) override {
last_accept = con->get_peer_addrs();
if (!con->get_priv()) {
con->set_priv(RefCountedPtr{new Session(con), false});
}
}
bool ms_dispatch(Message *m) override {
auto priv = m->get_connection()->get_priv();
auto s = static_cast<Session*>(priv.get());
if (!s) {
s = new Session(m->get_connection());
priv.reset(s, false);
m->get_connection()->set_priv(priv);
}
s->count++;
lderr(g_ceph_context) << __func__ << " conn: " << m->get_connection() << " session " << s << " count: " << s->count << dendl;
if (is_server) {
reply_message(m);
}
Mutex::Locker l(lock);
got_new = true;
cond.Signal();
m->put();
return true;
}
bool ms_handle_reset(Connection *con) override {
Mutex::Locker l(lock);
lderr(g_ceph_context) << __func__ << " " << con << dendl;
auto priv = con->get_priv();
if (auto s = static_cast<Session*>(priv.get()); s) {
s->con.reset(); // break con <-> session ref cycle
con->set_priv(nullptr); // break ref <-> session cycle, if any
}
return true;
}
void ms_handle_remote_reset(Connection *con) override {
Mutex::Locker l(lock);
lderr(g_ceph_context) << __func__ << " " << con << dendl;
auto priv = con->get_priv();
if (auto s = static_cast<Session*>(priv.get()); s) {
s->con.reset(); // break con <-> session ref cycle
con->set_priv(nullptr); // break ref <-> session cycle, if any
}
got_remote_reset = true;
cond.Signal();
}
bool ms_handle_refused(Connection *con) override {
return false;
}
void ms_fast_dispatch(Message *m) override {
auto priv = m->get_connection()->get_priv();
auto s = static_cast<Session*>(priv.get());
if (!s) {
s = new Session(m->get_connection());
priv.reset(s, false);
m->get_connection()->set_priv(priv);
}
s->count++;
lderr(g_ceph_context) << __func__ << " conn: " << m->get_connection() << " session " << s << " count: " << s->count << dendl;
if (is_server) {
if (loopback)
ceph_assert(m->get_source().is_osd());
else
reply_message(m);
} else if (loopback) {
ceph_assert(m->get_source().is_client());
}
m->put();
Mutex::Locker l(lock);
got_new = true;
cond.Signal();
}

int ms_handle_authentication(Connection *con) override {
return 1;
}

void reply_message(Message *m) {
MPing *rm = new MPing();
m->get_connection()->send_message(rm);
}
};

typedef FakeDispatcher::Session Session;

struct TestInterceptor : public Interceptor {

bool step_waiting = false;
bool waiting = true;
std::map<Connection *, uint32_t> current_step;
std::map<Connection *, std::list<uint32_t>> step_history;
std::map<uint32_t, std::optional<ACTION>> decisions;
std::set<uint32_t> breakpoints;

uint32_t count_step(Connection *conn, uint32_t step) {
uint32_t count = 0;
for (auto s : step_history[conn]) {
if (s == step) {
count++;
}
}
return count;
}

void breakpoint(uint32_t step) {
breakpoints.insert(step);
}

void remove_bp(uint32_t step) {
breakpoints.erase(step);
}

Connection *wait(uint32_t step, Connection *conn=nullptr) {
std::unique_lock<std::mutex> l(lock);
while(true) {
if (conn) {
auto it = current_step.find(conn);
if (it != current_step.end()) {
if (it->second == step) {
break;
}
}
} else {
for (auto it : current_step) {
if (it.second == step) {
conn = it.first;
break;
}
}
if (conn) {
break;
}
}
step_waiting = true;
cond_var.wait(l);
}
step_waiting = false;
return conn;
}

ACTION wait_for_decision(uint32_t step, std::unique_lock<std::mutex> &l) {
if (decisions[step]) {
return *(decisions[step]);
}
waiting = true;
while(waiting) {
cond_var.wait(l);
}
return *(decisions[step]);
}

void proceed(uint32_t step, ACTION decision) {
std::unique_lock<std::mutex> l(lock);
decisions[step] = decision;
if (waiting) {
waiting = false;
cond_var.notify_one();
}
}

ACTION intercept(Connection *conn, uint32_t step) override {
lderr(g_ceph_context) << __func__ << " conn(" << conn
<< ") intercept called on step=" << step << dendl;

{
std::unique_lock<std::mutex> l(lock);
step_history[conn].push_back(step);
current_step[conn] = step;
if (step_waiting) {
cond_var.notify_one();
}
}

std::unique_lock<std::mutex> l(lock);
ACTION decision = ACTION::CONTINUE;
if (breakpoints.find(step) != breakpoints.end()) {
lderr(g_ceph_context) << __func__ << " conn(" << conn
<< ") pausing on step=" << step << dendl;
decision = wait_for_decision(step, l);
} else {
if (decisions[step]) {
decision = *(decisions[step]);
}
}
lderr(g_ceph_context) << __func__ << " conn(" << conn
<< ") resuming step=" << step << " with decision="
<< decision << dendl;
decisions[step].reset();
return decision;
}

};

/**
* Scenario: A connects to B, and B connects to A at the same time.
*/
TEST_P(MessengerTest, ConnectionRaceTest) {
if (string(GetParam()) == "simple") {
return;
}

FakeDispatcher cli_dispatcher(false), srv_dispatcher(false);

TestInterceptor *cli_interceptor = new TestInterceptor();
TestInterceptor *srv_interceptor = new TestInterceptor();

server_msgr->set_policy(entity_name_t::TYPE_CLIENT, Messenger::Policy::lossless_peer_reuse(0));
server_msgr->interceptor = srv_interceptor;

client_msgr->set_policy(entity_name_t::TYPE_OSD, Messenger::Policy::lossless_peer_reuse(0));
client_msgr->interceptor = cli_interceptor;

entity_addr_t bind_addr;
bind_addr.parse("v2:127.0.0.1:3300");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

bind_addr.parse("v2:127.0.0.1:3301");
client_msgr->bind(bind_addr);
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// pause before sending client_ident message
cli_interceptor->breakpoint(11);
// pause before sending client_ident message
srv_interceptor->breakpoint(11);

ConnectionRef c2s = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
MPing *m1 = new MPing();
ASSERT_EQ(c2s->send_message(m1), 0);

ConnectionRef s2c = server_msgr->connect_to(client_msgr->get_mytype(),
client_msgr->get_myaddrs());
MPing *m2 = new MPing();
ASSERT_EQ(s2c->send_message(m2), 0);

cli_interceptor->wait(11, c2s.get());
srv_interceptor->wait(11, s2c.get());

// at this point both connections (A->B, B->A) are paused just before sending
// the client_ident message.

cli_interceptor->remove_bp(11);
srv_interceptor->remove_bp(11);

cli_interceptor->proceed(11, Interceptor::ACTION::CONTINUE);
srv_interceptor->proceed(11, Interceptor::ACTION::CONTINUE);

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}

{
Mutex::Locker l(srv_dispatcher.lock);
while (!srv_dispatcher.got_new)
srv_dispatcher.cond.Wait(srv_dispatcher.lock);
srv_dispatcher.got_new = false;
}
ASSERT_TRUE(s2c->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(s2c->get_priv().get())->get_count());
ASSERT_TRUE(s2c->peer_is_client());

ASSERT_TRUE(c2s->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(c2s->get_priv().get())->get_count());
ASSERT_TRUE(c2s->peer_is_osd());

client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();

delete cli_interceptor;
delete srv_interceptor;
}

/**
* Scenario:
* - A connects to B
* - A sends client_ident to B
* - B fails before sending server_ident to A
* - A reconnects
*/
TEST_P(MessengerTest, MissingServerIdenTest) {
if (string(GetParam()) == "simple") {
return;
}

FakeDispatcher cli_dispatcher(false), srv_dispatcher(false);

TestInterceptor *cli_interceptor = new TestInterceptor();
TestInterceptor *srv_interceptor = new TestInterceptor();

server_msgr->set_policy(entity_name_t::TYPE_CLIENT, Messenger::Policy::stateful_server(0));
server_msgr->interceptor = srv_interceptor;

client_msgr->set_policy(entity_name_t::TYPE_OSD, Messenger::Policy::lossy_client(0));
client_msgr->interceptor = cli_interceptor;

entity_addr_t bind_addr;
bind_addr.parse("v2:127.0.0.1:3300");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

bind_addr.parse("v2:127.0.0.1:3301");
client_msgr->bind(bind_addr);
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// pause before sending client_ident message
srv_interceptor->breakpoint(12);

ConnectionRef c2s = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
MPing *m1 = new MPing();
ASSERT_EQ(c2s->send_message(m1), 0);

Connection *c2s_accepter = srv_interceptor->wait(12);
srv_interceptor->remove_bp(12);

// We inject a message from this side of the connection to force it to be
// in standby when we inject the failure below
MPing *m2 = new MPing();
ASSERT_EQ(c2s_accepter->send_message(m2), 0);

srv_interceptor->proceed(12, Interceptor::ACTION::FAIL);

{
Mutex::Locker l(srv_dispatcher.lock);
while (!srv_dispatcher.got_new)
srv_dispatcher.cond.Wait(srv_dispatcher.lock);
srv_dispatcher.got_new = false;
}

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(c2s->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(c2s->get_priv().get())->get_count());
ASSERT_TRUE(c2s->peer_is_osd());

ASSERT_TRUE(c2s_accepter->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(c2s_accepter->get_priv().get())->get_count());
ASSERT_TRUE(c2s_accepter->peer_is_client());

client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();

delete cli_interceptor;
delete srv_interceptor;
}

/**
* Scenario:
* - A connects to B
* - A sends client_ident to B
* - B fails before sending server_ident to A
* - A goes to standby
* - B reconnects to A
*/
TEST_P(MessengerTest, MissingServerIdenTest2) {
if (string(GetParam()) == "simple") {
return;
}

FakeDispatcher cli_dispatcher(false), srv_dispatcher(false);

TestInterceptor *cli_interceptor = new TestInterceptor();
TestInterceptor *srv_interceptor = new TestInterceptor();

server_msgr->set_policy(entity_name_t::TYPE_CLIENT, Messenger::Policy::lossless_peer(0));
server_msgr->interceptor = srv_interceptor;

client_msgr->set_policy(entity_name_t::TYPE_OSD, Messenger::Policy::lossless_peer(0));
client_msgr->interceptor = cli_interceptor;

entity_addr_t bind_addr;
bind_addr.parse("v2:127.0.0.1:3300");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

bind_addr.parse("v2:127.0.0.1:3301");
client_msgr->bind(bind_addr);
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// pause before sending client_ident message
srv_interceptor->breakpoint(12);

ConnectionRef c2s = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());

Connection *c2s_accepter = srv_interceptor->wait(12);
srv_interceptor->remove_bp(12);

// We inject a message from this side of the connection to force it to be
// in standby when we inject the failure below
MPing *m2 = new MPing();
ASSERT_EQ(c2s_accepter->send_message(m2), 0);

srv_interceptor->proceed(12, Interceptor::ACTION::FAIL);

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(c2s->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(c2s->get_priv().get())->get_count());
ASSERT_TRUE(c2s->peer_is_osd());

ASSERT_TRUE(c2s_accepter->is_connected());
ASSERT_EQ(0u, static_cast<Session*>(c2s_accepter->get_priv().get())->get_count());
ASSERT_TRUE(c2s_accepter->peer_is_client());

client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();

delete cli_interceptor;
delete srv_interceptor;
}

/**
* Scenario:
* - A connects to B
* - A and B exchange messages
* - A fails
* - B goes into standby
* - A reconnects
*/
TEST_P(MessengerTest, ReconnectTest) {
if (string(GetParam()) == "simple") {
return;
}

FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);

TestInterceptor *cli_interceptor = new TestInterceptor();
TestInterceptor *srv_interceptor = new TestInterceptor();

server_msgr->set_policy(entity_name_t::TYPE_CLIENT, Messenger::Policy::stateful_server(0));
server_msgr->interceptor = srv_interceptor;

client_msgr->set_policy(entity_name_t::TYPE_OSD, Messenger::Policy::lossless_peer(0));
client_msgr->interceptor = cli_interceptor;

entity_addr_t bind_addr;
bind_addr.parse("v2:127.0.0.1:3300");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

bind_addr.parse("v2:127.0.0.1:3301");
client_msgr->bind(bind_addr);
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

ConnectionRef c2s = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());

MPing *m1 = new MPing();
ASSERT_EQ(c2s->send_message(m1), 0);

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}

ASSERT_TRUE(c2s->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(c2s->get_priv().get())->get_count());
ASSERT_TRUE(c2s->peer_is_osd());

cli_interceptor->breakpoint(16);
MPing *m2 = new MPing();
ASSERT_EQ(c2s->send_message(m2), 0);

cli_interceptor->wait(16, c2s.get());
cli_interceptor->remove_bp(16);

// at this point client and server are connected together

srv_interceptor->breakpoint(15);

// failing client
cli_interceptor->proceed(16, Interceptor::ACTION::FAIL);

MPing *m3 = new MPing();
ASSERT_EQ(c2s->send_message(m3), 0);

Connection *c2s_accepter = srv_interceptor->wait(15);
// the srv end of theconnection is now paused at ready
// this means that the reconnect was successful
srv_interceptor->remove_bp(15);

ASSERT_TRUE(c2s_accepter->peer_is_client());
// c2s_accepter sent 0 reconnect messages
ASSERT_EQ(srv_interceptor->count_step(c2s_accepter, 13), 0u);
// c2s_accepter sent 1 reconnect_ok messages
ASSERT_EQ(srv_interceptor->count_step(c2s_accepter, 14), 1u);
// c2s sent 1 reconnect messages
ASSERT_EQ(cli_interceptor->count_step(c2s.get(), 13), 1u);
// c2s sent 0 reconnect_ok messages
ASSERT_EQ(cli_interceptor->count_step(c2s.get(), 14), 0u);

srv_interceptor->proceed(15, Interceptor::ACTION::CONTINUE);

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}

client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();

delete cli_interceptor;
delete srv_interceptor;
}

/**
* Scenario:
* - A connects to B
* - A and B exchange messages
* - A fails
* - A reconnects // B reconnects
*/
TEST_P(MessengerTest, ReconnectRaceTest) {
if (string(GetParam()) == "simple") {
return;
}

FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);

TestInterceptor *cli_interceptor = new TestInterceptor();
TestInterceptor *srv_interceptor = new TestInterceptor();

server_msgr->set_policy(entity_name_t::TYPE_CLIENT, Messenger::Policy::lossless_peer(0));
server_msgr->interceptor = srv_interceptor;

client_msgr->set_policy(entity_name_t::TYPE_OSD, Messenger::Policy::lossless_peer(0));
client_msgr->interceptor = cli_interceptor;

entity_addr_t bind_addr;
bind_addr.parse("v2:127.0.0.1:3300");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

bind_addr.parse("v2:127.0.0.1:3301");
client_msgr->bind(bind_addr);
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

ConnectionRef c2s = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());

MPing *m1 = new MPing();
ASSERT_EQ(c2s->send_message(m1), 0);

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}

ASSERT_TRUE(c2s->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(c2s->get_priv().get())->get_count());
ASSERT_TRUE(c2s->peer_is_osd());

cli_interceptor->breakpoint(16);
MPing *m2 = new MPing();
ASSERT_EQ(c2s->send_message(m2), 0);

cli_interceptor->wait(16, c2s.get());
cli_interceptor->remove_bp(16);

// at this point client and server are connected together

// force both client and server to race on reconnect
cli_interceptor->breakpoint(13);
srv_interceptor->breakpoint(13);

// failing client
// this will cause both client and server to reconnect at the same time
cli_interceptor->proceed(16, Interceptor::ACTION::FAIL);

MPing *m3 = new MPing();
ASSERT_EQ(c2s->send_message(m3), 0);

cli_interceptor->wait(13, c2s.get());
srv_interceptor->wait(13);

cli_interceptor->remove_bp(13);
srv_interceptor->remove_bp(13);

// pause on "ready"
srv_interceptor->breakpoint(15);

cli_interceptor->proceed(13, Interceptor::ACTION::CONTINUE);
srv_interceptor->proceed(13, Interceptor::ACTION::CONTINUE);

Connection *c2s_accepter = srv_interceptor->wait(15);

// the server has reconnected and is "ready"
srv_interceptor->remove_bp(15);

ASSERT_TRUE(c2s_accepter->peer_is_client());
ASSERT_TRUE(c2s->peer_is_osd());
// the server should win the reconnect race

// c2s_accepter sent 1 or 2 reconnect messages
ASSERT_LT(srv_interceptor->count_step(c2s_accepter, 13), 3u);
ASSERT_GT(srv_interceptor->count_step(c2s_accepter, 13), 0u);
// c2s_accepter sent 0 reconnect_ok messages
ASSERT_EQ(srv_interceptor->count_step(c2s_accepter, 14), 0u);
// c2s sent 1 reconnect messages
ASSERT_EQ(cli_interceptor->count_step(c2s.get(), 13), 1u);
// c2s sent 1 reconnect_ok messages
ASSERT_EQ(cli_interceptor->count_step(c2s.get(), 14), 1u);

if (srv_interceptor->count_step(c2s_accepter, 13) == 2) {
// if the server send the reconnect message two times then
// the client must have sent a session retry message to the server
ASSERT_EQ(cli_interceptor->count_step(c2s.get(), 18), 1u);
} else {
ASSERT_EQ(cli_interceptor->count_step(c2s.get(), 18), 0u);
}

srv_interceptor->proceed(15, Interceptor::ACTION::CONTINUE);

{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}

client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();

delete cli_interceptor;
delete srv_interceptor;
}

TEST_P(MessengerTest, SimpleTest) {
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. simple round trip
MPing *m = new MPing();
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(conn->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(conn->get_priv().get())->get_count());
ASSERT_TRUE(conn->peer_is_osd());

// 2. test rebind port
set<int> avoid_ports;
for (int i = 0; i < 10 ; i++) {
for (auto a : server_msgr->get_myaddrs().v) {
avoid_ports.insert(a.get_port() + i);
}
}
server_msgr->rebind(avoid_ports);
for (auto a : server_msgr->get_myaddrs().v) {
ASSERT_TRUE(avoid_ports.count(a.get_port()) == 0);
}

conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());

// 3. test markdown connection
conn->mark_down();
ASSERT_FALSE(conn->is_connected());

// 4. test failed connection
server_msgr->shutdown();
server_msgr->wait();

m = new MPing();
conn->send_message(m);
CHECK_AND_WAIT_TRUE(!conn->is_connected());
ASSERT_FALSE(conn->is_connected());

// 5. loopback connection
srv_dispatcher.loopback = true;
conn = client_msgr->get_loopback_connection();
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
srv_dispatcher.loopback = false;
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();
}

TEST_P(MessengerTest, SimpleMsgr2Test) {
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t legacy_addr;
legacy_addr.parse("v1:127.0.0.1");
entity_addr_t msgr2_addr;
msgr2_addr.parse("v2:127.0.0.1");
entity_addrvec_t bind_addrs;
bind_addrs.v.push_back(legacy_addr);
bind_addrs.v.push_back(msgr2_addr);
server_msgr->bindv(bind_addrs);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. simple round trip
MPing *m = new MPing();
ConnectionRef conn = client_msgr->connect_to(
server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(conn->is_connected());
ASSERT_EQ(1u, static_cast<Session*>(conn->get_priv().get())->get_count());
ASSERT_TRUE(conn->peer_is_osd());

// 2. test rebind port
set<int> avoid_ports;
for (int i = 0; i < 10 ; i++) {
for (auto a : server_msgr->get_myaddrs().v) {
avoid_ports.insert(a.get_port() + i);
}
}
server_msgr->rebind(avoid_ports);
for (auto a : server_msgr->get_myaddrs().v) {
ASSERT_TRUE(avoid_ports.count(a.get_port()) == 0);
}

conn = client_msgr->connect_to(
server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());

// 3. test markdown connection
conn->mark_down();
ASSERT_FALSE(conn->is_connected());

// 4. test failed connection
server_msgr->shutdown();
server_msgr->wait();

m = new MPing();
conn->send_message(m);
CHECK_AND_WAIT_TRUE(!conn->is_connected());
ASSERT_FALSE(conn->is_connected());

// 5. loopback connection
srv_dispatcher.loopback = true;
conn = client_msgr->get_loopback_connection();
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
srv_dispatcher.loopback = false;
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
client_msgr->shutdown();
client_msgr->wait();
server_msgr->shutdown();
server_msgr->wait();
}

TEST_P(MessengerTest, NameAddrTest) {
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

MPing *m = new MPing();
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
ASSERT_TRUE(conn->get_peer_addrs() == server_msgr->get_myaddrs());
ConnectionRef server_conn = server_msgr->connect_to(
client_msgr->get_mytype(), srv_dispatcher.last_accept);
// Verify that server_conn is the one we already accepted from client,
// so it means the session counter in server_conn is also incremented.
ASSERT_EQ(1U, static_cast<Session*>(server_conn->get_priv().get())->get_count());
server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}

TEST_P(MessengerTest, FeatureTest) {
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
uint64_t all_feature_supported, feature_required, feature_supported = 0;
for (int i = 0; i < 10; i++)
feature_supported |= 1ULL << i;
feature_supported |= CEPH_FEATUREMASK_MSG_ADDR2;
feature_supported |= CEPH_FEATUREMASK_SERVER_NAUTILUS;
feature_required = feature_supported | 1ULL << 13;
all_feature_supported = feature_required | 1ULL << 14;

Messenger::Policy p = server_msgr->get_policy(entity_name_t::TYPE_CLIENT);
p.features_required = feature_required;
server_msgr->set_policy(entity_name_t::TYPE_CLIENT, p);
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

// 1. Suppose if only support less than required
p = client_msgr->get_policy(entity_name_t::TYPE_OSD);
p.features_supported = feature_supported;
client_msgr->set_policy(entity_name_t::TYPE_OSD, p);
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

MPing *m = new MPing();
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
conn->send_message(m);
CHECK_AND_WAIT_TRUE(!conn->is_connected());
// should failed build a connection
ASSERT_FALSE(conn->is_connected());

client_msgr->shutdown();
client_msgr->wait();

// 2. supported met required
p = client_msgr->get_policy(entity_name_t::TYPE_OSD);
p.features_supported = all_feature_supported;
client_msgr->set_policy(entity_name_t::TYPE_OSD, p);
client_msgr->start();

conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());

server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}

TEST_P(MessengerTest, TimeoutTest) {
g_ceph_context->_conf.set_val("ms_tcp_read_timeout", "1");
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. build the connection
MPing *m = new MPing();
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(conn->is_connected());
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
ASSERT_TRUE(conn->peer_is_osd());

// 2. wait for idle
usleep(2500*1000);
ASSERT_FALSE(conn->is_connected());

server_msgr->shutdown();
server_msgr->wait();

client_msgr->shutdown();
client_msgr->wait();
g_ceph_context->_conf.set_val("ms_tcp_read_timeout", "900");
}

TEST_P(MessengerTest, StatefulTest) {
Message *m;
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
Messenger::Policy p = Messenger::Policy::stateful_server(0);
server_msgr->set_policy(entity_name_t::TYPE_CLIENT, p);
p = Messenger::Policy::lossless_client(0);
client_msgr->set_policy(entity_name_t::TYPE_OSD, p);

server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. test for server standby
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
conn->mark_down();
ASSERT_FALSE(conn->is_connected());
ConnectionRef server_conn = server_msgr->connect_to(
client_msgr->get_mytype(), srv_dispatcher.last_accept);
// don't lose state
ASSERT_EQ(1U, static_cast<Session*>(server_conn->get_priv().get())->get_count());

srv_dispatcher.got_new = false;
conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
server_conn = server_msgr->connect_to(client_msgr->get_mytype(),
srv_dispatcher.last_accept);
{
Mutex::Locker l(srv_dispatcher.lock);
while (!srv_dispatcher.got_remote_reset)
srv_dispatcher.cond.Wait(srv_dispatcher.lock);
}

// 2. test for client reconnect
ASSERT_FALSE(cli_dispatcher.got_remote_reset);
cli_dispatcher.got_connect = false;
cli_dispatcher.got_new = false;
cli_dispatcher.got_remote_reset = false;
server_conn->mark_down();
ASSERT_FALSE(server_conn->is_connected());
// ensure client detect server socket closed
{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_remote_reset)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_remote_reset = false;
}
{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_connect)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_connect = false;
}
CHECK_AND_WAIT_TRUE(conn->is_connected());
ASSERT_TRUE(conn->is_connected());

{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
ASSERT_TRUE(conn->is_connected());
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
// resetcheck happen
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
server_conn = server_msgr->connect_to(client_msgr->get_mytype(),
srv_dispatcher.last_accept);
ASSERT_EQ(1U, static_cast<Session*>(server_conn->get_priv().get())->get_count());
cli_dispatcher.got_remote_reset = false;

server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}

TEST_P(MessengerTest, StatelessTest) {
Message *m;
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
Messenger::Policy p = Messenger::Policy::stateless_server(0);
server_msgr->set_policy(entity_name_t::TYPE_CLIENT, p);
p = Messenger::Policy::lossy_client(0);
client_msgr->set_policy(entity_name_t::TYPE_OSD, p);

server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. test for server lose state
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
conn->mark_down();
ASSERT_FALSE(conn->is_connected());

srv_dispatcher.got_new = false;
conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
ConnectionRef server_conn = server_msgr->connect_to(client_msgr->get_mytype(),
srv_dispatcher.last_accept);
// server lose state
{
Mutex::Locker l(srv_dispatcher.lock);
while (!srv_dispatcher.got_new)
srv_dispatcher.cond.Wait(srv_dispatcher.lock);
}
ASSERT_EQ(1U, static_cast<Session*>(server_conn->get_priv().get())->get_count());

// 2. test for client lossy
server_conn->mark_down();
ASSERT_FALSE(server_conn->is_connected());
conn->send_keepalive();
CHECK_AND_WAIT_TRUE(!conn->is_connected());
ASSERT_FALSE(conn->is_connected());
conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());

server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}

TEST_P(MessengerTest, ClientStandbyTest) {
Message *m;
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
Messenger::Policy p = Messenger::Policy::stateful_server(0);
server_msgr->set_policy(entity_name_t::TYPE_CLIENT, p);
p = Messenger::Policy::lossless_peer(0);
client_msgr->set_policy(entity_name_t::TYPE_OSD, p);

server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. test for client standby, resetcheck
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
ConnectionRef server_conn = server_msgr->connect_to(
client_msgr->get_mytype(),
srv_dispatcher.last_accept);
ASSERT_FALSE(cli_dispatcher.got_remote_reset);
cli_dispatcher.got_connect = false;
server_conn->mark_down();
ASSERT_FALSE(server_conn->is_connected());
// client should be standby
usleep(300*1000);
// client should be standby, so we use original connection
{
// Try send message to verify got remote reset callback
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
{
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_remote_reset)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_remote_reset = false;
while (!cli_dispatcher.got_connect)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_connect = false;
}
CHECK_AND_WAIT_TRUE(conn->is_connected());
ASSERT_TRUE(conn->is_connected());
m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
server_conn = server_msgr->connect_to(client_msgr->get_mytype(),
srv_dispatcher.last_accept);
ASSERT_EQ(1U, static_cast<Session*>(server_conn->get_priv().get())->get_count());

server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}

TEST_P(MessengerTest, AuthTest) {
g_ceph_context->_conf.set_val("auth_cluster_required", "cephx");
g_ceph_context->_conf.set_val("auth_service_required", "cephx");
g_ceph_context->_conf.set_val("auth_client_required", "cephx");
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();

client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();

// 1. simple auth round trip
MPing *m = new MPing();
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(conn->is_connected());
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());

// 2. mix auth
g_ceph_context->_conf.set_val("auth_cluster_required", "none");
g_ceph_context->_conf.set_val("auth_service_required", "none");
g_ceph_context->_conf.set_val("auth_client_required", "none");
conn->mark_down();
ASSERT_FALSE(conn->is_connected());
conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
MPing *m = new MPing();
ASSERT_EQ(conn->send_message(m), 0);
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.Wait(cli_dispatcher.lock);
cli_dispatcher.got_new = false;
}
ASSERT_TRUE(conn->is_connected());
ASSERT_EQ(1U, static_cast<Session*>(conn->get_priv().get())->get_count());
server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}

TEST_P(MessengerTest, MessageTest) {
FakeDispatcher cli_dispatcher(false), srv_dispatcher(true);
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1");
else
bind_addr.parse("v2:127.0.0.1");
Messenger::Policy p = Messenger::Policy::stateful_server(0);
server_msgr->set_policy(entity_name_t::TYPE_CLIENT, p);
p = Messenger::Policy::lossless_peer(0);
client_msgr->set_policy(entity_name_t::TYPE_OSD, p);

server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->start();
client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->start();


// 1. A very large "front"(as well as "payload")
// Because a external message need to invade Messenger::decode_message,
// here we only use existing message class(MCommand)
ConnectionRef conn = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
{
uuid_d uuid;
uuid.generate_random();
vector<string> cmds;
string s("abcdefghijklmnopqrstuvwxyz");
for (int i = 0; i < 1024*30; i++)
cmds.push_back(s);
MCommand *m = new MCommand(uuid);
m->cmd = cmds;
conn->send_message(m);
utime_t t;
t += 1000*1000*500;
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.WaitInterval(cli_dispatcher.lock, t);
ASSERT_TRUE(cli_dispatcher.got_new);
cli_dispatcher.got_new = false;
}

// 2. A very large "data"
{
bufferlist bl;
string s("abcdefghijklmnopqrstuvwxyz");
for (int i = 0; i < 1024*30; i++)
bl.append(s);
MPing *m = new MPing();
m->set_data(bl);
conn->send_message(m);
utime_t t;
t += 1000*1000*500;
Mutex::Locker l(cli_dispatcher.lock);
while (!cli_dispatcher.got_new)
cli_dispatcher.cond.WaitInterval(cli_dispatcher.lock, t);
ASSERT_TRUE(cli_dispatcher.got_new);
cli_dispatcher.got_new = false;
}
server_msgr->shutdown();
client_msgr->shutdown();
server_msgr->wait();
client_msgr->wait();
}


class SyntheticWorkload;

struct Payload {
enum Who : uint8_t {
PING = 0,
PONG = 1,
};
uint8_t who = 0;
uint64_t seq = 0;
bufferlist data;

Payload(Who who, uint64_t seq, const bufferlist& data)
: who(who), seq(seq), data(data)
{}
Payload() = default;
DENC(Payload, v, p) {
DENC_START(1, 1, p);
denc(v.who, p);
denc(v.seq, p);
denc(v.data, p);
DENC_FINISH(p);
}
};
WRITE_CLASS_DENC(Payload)

ostream& operator<<(ostream& out, const Payload &pl)
{
return out << "reply=" << pl.who << " i = " << pl.seq;
}

class SyntheticDispatcher : public Dispatcher {
public:
Mutex lock;
Cond cond;
bool is_server;
bool got_new;
bool got_remote_reset;
bool got_connect;
map<ConnectionRef, list<uint64_t> > conn_sent;
map<uint64_t, bufferlist> sent;
atomic<uint64_t> index;
SyntheticWorkload *workload;

SyntheticDispatcher(bool s, SyntheticWorkload *wl):
Dispatcher(g_ceph_context), lock("SyntheticDispatcher::lock"), is_server(s), got_new(false),
got_remote_reset(false), got_connect(false), index(0), workload(wl) {
// don't need authorizers
ms_set_require_authorizer(false);
}
bool ms_can_fast_dispatch_any() const override { return true; }
bool ms_can_fast_dispatch(const Message *m) const override {
switch (m->get_type()) {
case CEPH_MSG_PING:
case MSG_COMMAND:
return true;
default:
return false;
}
}

void ms_handle_fast_connect(Connection *con) override {
Mutex::Locker l(lock);
list<uint64_t> c = conn_sent[con];
for (list<uint64_t>::iterator it = c.begin();
it != c.end(); ++it)
sent.erase(*it);
conn_sent.erase(con);
got_connect = true;
cond.Signal();
}
void ms_handle_fast_accept(Connection *con) override {
Mutex::Locker l(lock);
list<uint64_t> c = conn_sent[con];
for (list<uint64_t>::iterator it = c.begin();
it != c.end(); ++it)
sent.erase(*it);
conn_sent.erase(con);
cond.Signal();
}
bool ms_dispatch(Message *m) override {
ceph_abort();
}
bool ms_handle_reset(Connection *con) override;
void ms_handle_remote_reset(Connection *con) override {
Mutex::Locker l(lock);
list<uint64_t> c = conn_sent[con];
for (list<uint64_t>::iterator it = c.begin();
it != c.end(); ++it)
sent.erase(*it);
conn_sent.erase(con);
got_remote_reset = true;
}
bool ms_handle_refused(Connection *con) override {
return false;
}
void ms_fast_dispatch(Message *m) override {
// MSG_COMMAND is used to disorganize regular message flow
if (m->get_type() == MSG_COMMAND) {
m->put();
return ;
}

Payload pl;
auto p = m->get_data().cbegin();
decode(pl, p);
if (pl.who == Payload::PING) {
lderr(g_ceph_context) << __func__ << " conn=" << m->get_connection() << pl << dendl;
reply_message(m, pl);
m->put();
Mutex::Locker l(lock);
got_new = true;
cond.Signal();
} else {
Mutex::Locker l(lock);
if (sent.count(pl.seq)) {
lderr(g_ceph_context) << __func__ << " conn=" << m->get_connection() << pl << dendl;
ASSERT_EQ(conn_sent[m->get_connection()].front(), pl.seq);
ASSERT_TRUE(pl.data.contents_equal(sent[pl.seq]));
conn_sent[m->get_connection()].pop_front();
sent.erase(pl.seq);
}
m->put();
got_new = true;
cond.Signal();
}
}

int ms_handle_authentication(Connection *con) override {
return 1;
}

void reply_message(const Message *m, Payload& pl) {
pl.who = Payload::PONG;
bufferlist bl;
encode(pl, bl);
MPing *rm = new MPing();
rm->set_data(bl);
m->get_connection()->send_message(rm);
lderr(g_ceph_context) << __func__ << " conn=" << m->get_connection() << " reply m=" << m << " i=" << pl.seq << dendl;
}

void send_message_wrap(ConnectionRef con, const bufferlist& data) {
Message *m = new MPing();
Payload pl{Payload::PING, index++, data};
bufferlist bl;
encode(pl, bl);
m->set_data(bl);
if (!con->get_messenger()->get_default_policy().lossy) {
Mutex::Locker l(lock);
sent[pl.seq] = pl.data;
conn_sent[con].push_back(pl.seq);
}
lderr(g_ceph_context) << __func__ << " conn=" << con.get() << " send m=" << m << " i=" << pl.seq << dendl;
ASSERT_EQ(0, con->send_message(m));
}

uint64_t get_pending() {
Mutex::Locker l(lock);
return sent.size();
}

void clear_pending(ConnectionRef con) {
Mutex::Locker l(lock);

for (list<uint64_t>::iterator it = conn_sent[con].begin();
it != conn_sent[con].end(); ++it)
sent.erase(*it);
conn_sent.erase(con);
}

void print() {
for (auto && p : conn_sent) {
if (!p.second.empty()) {
lderr(g_ceph_context) << __func__ << " " << p.first << " wait " << p.second.size() << dendl;
}
}
}
};


class SyntheticWorkload {
Mutex lock;
Cond cond;
set<Messenger*> available_servers;
set<Messenger*> available_clients;
Messenger::Policy client_policy;
map<ConnectionRef, pair<Messenger*, Messenger*> > available_connections;
SyntheticDispatcher dispatcher;
gen_type rng;
vector<bufferlist> rand_data;
DummyAuthClientServer dummy_auth;

public:
static const unsigned max_in_flight = 64;
static const unsigned max_connections = 128;
static const unsigned max_message_len = 1024 * 1024 * 4;

SyntheticWorkload(int servers, int clients, string type, int random_num,
Messenger::Policy srv_policy, Messenger::Policy cli_policy)
: lock("SyntheticWorkload::lock"),
client_policy(cli_policy),
dispatcher(false, this),
rng(time(NULL)),
dummy_auth(g_ceph_context) {
dummy_auth.auth_registry.refresh_config();
Messenger *msgr;
int base_port = 16800;
entity_addr_t bind_addr;
char addr[64];
for (int i = 0; i < servers; ++i) {
msgr = Messenger::create(g_ceph_context, type, entity_name_t::OSD(0),
"server", getpid()+i, 0);
snprintf(addr, sizeof(addr), "%s127.0.0.1:%d",
(type == "simple") ? "v1:":"v2:",
base_port+i);
bind_addr.parse(addr);
msgr->bind(bind_addr);
msgr->add_dispatcher_head(&dispatcher);
msgr->set_auth_client(&dummy_auth);
msgr->set_auth_server(&dummy_auth);

ceph_assert(msgr);
msgr->set_default_policy(srv_policy);
available_servers.insert(msgr);
msgr->start();
}

for (int i = 0; i < clients; ++i) {
msgr = Messenger::create(g_ceph_context, type, entity_name_t::CLIENT(-1),
"client", getpid()+i+servers, 0);
if (cli_policy.standby) {
snprintf(addr, sizeof(addr), "%s127.0.0.1:%d",
(type == "simple") ? "v1:":"v2:",
base_port+i+servers);
bind_addr.parse(addr);
msgr->bind(bind_addr);
}
msgr->add_dispatcher_head(&dispatcher);
msgr->set_auth_client(&dummy_auth);
msgr->set_auth_server(&dummy_auth);

ceph_assert(msgr);
msgr->set_default_policy(cli_policy);
available_clients.insert(msgr);
msgr->start();
}

for (int i = 0; i < random_num; i++) {
bufferlist bl;
boost::uniform_int<> u(32, max_message_len);
uint64_t value_len = u(rng);
bufferptr bp(value_len);
bp.zero();
for (uint64_t j = 0; j < value_len-sizeof(i); ) {
memcpy(bp.c_str()+j, &i, sizeof(i));
j += 4096;
}

bl.append(bp);
rand_data.push_back(bl);
}
}

ConnectionRef _get_random_connection() {
while (dispatcher.get_pending() > max_in_flight) {
lock.Unlock();
usleep(500);
lock.Lock();
}
ceph_assert(lock.is_locked());
boost::uniform_int<> choose(0, available_connections.size() - 1);
int index = choose(rng);
map<ConnectionRef, pair<Messenger*, Messenger*> >::iterator i = available_connections.begin();
for (; index > 0; --index, ++i) ;
return i->first;
}

bool can_create_connection() {
return available_connections.size() < max_connections;
}

void generate_connection() {
Mutex::Locker l(lock);
if (!can_create_connection())
return ;

Messenger *server, *client;
{
boost::uniform_int<> choose(0, available_servers.size() - 1);
int index = choose(rng);
set<Messenger*>::iterator i = available_servers.begin();
for (; index > 0; --index, ++i) ;
server = *i;
}
{
boost::uniform_int<> choose(0, available_clients.size() - 1);
int index = choose(rng);
set<Messenger*>::iterator i = available_clients.begin();
for (; index > 0; --index, ++i) ;
client = *i;
}

pair<Messenger*, Messenger*> p;
{
boost::uniform_int<> choose(0, available_servers.size() - 1);
if (server->get_default_policy().server) {
p = make_pair(client, server);
ConnectionRef conn = client->connect_to(server->get_mytype(),
server->get_myaddrs());
available_connections[conn] = p;
} else {
ConnectionRef conn = client->connect_to(server->get_mytype(),
server->get_myaddrs());
p = make_pair(client, server);
available_connections[conn] = p;
}
}
}

void send_message() {
Mutex::Locker l(lock);
ConnectionRef conn = _get_random_connection();
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val >= 95) {
uuid_d uuid;
uuid.generate_random();
MCommand *m = new MCommand(uuid);
vector<string> cmds;
cmds.push_back("command");
m->cmd = cmds;
m->set_priority(200);
conn->send_message(m);
} else {
boost::uniform_int<> u(0, rand_data.size()-1);
dispatcher.send_message_wrap(conn, rand_data[u(rng)]);
}
}

void drop_connection() {
Mutex::Locker l(lock);
if (available_connections.size() < 10)
return;
ConnectionRef conn = _get_random_connection();
dispatcher.clear_pending(conn);
conn->mark_down();
if (!client_policy.server &&
!client_policy.lossy &&
client_policy.standby) {
// it's a lossless policy, so we need to mark down each side
pair<Messenger*, Messenger*> &p = available_connections[conn];
if (!p.first->get_default_policy().server && !p.second->get_default_policy().server) {
ASSERT_EQ(conn->get_messenger(), p.first);
ConnectionRef peer = p.second->connect_to(p.first->get_mytype(),
p.first->get_myaddrs());
peer->mark_down();
dispatcher.clear_pending(peer);
available_connections.erase(peer);
}
}
ASSERT_EQ(available_connections.erase(conn), 1U);
}

void print_internal_state(bool detail=false) {
Mutex::Locker l(lock);
lderr(g_ceph_context) << "available_connections: " << available_connections.size()
<< " inflight messages: " << dispatcher.get_pending() << dendl;
if (detail && !available_connections.empty()) {
dispatcher.print();
}
}

void wait_for_done() {
int64_t tick_us = 1000 * 100; // 100ms
int64_t timeout_us = 5 * 60 * 1000 * 1000; // 5 mins
int i = 0;
while (dispatcher.get_pending()) {
usleep(tick_us);
timeout_us -= tick_us;
if (i++ % 50 == 0)
print_internal_state(true);
if (timeout_us < 0)
ceph_abort_msg(" loop time exceed 5 mins, it looks we stuck into some problems!");
}
for (set<Messenger*>::iterator it = available_servers.begin();
it != available_servers.end(); ++it) {
(*it)->shutdown();
(*it)->wait();
ASSERT_EQ((*it)->get_dispatch_queue_len(), 0);
delete (*it);
}
available_servers.clear();

for (set<Messenger*>::iterator it = available_clients.begin();
it != available_clients.end(); ++it) {
(*it)->shutdown();
(*it)->wait();
ASSERT_EQ((*it)->get_dispatch_queue_len(), 0);
delete (*it);
}
available_clients.clear();
}

void handle_reset(Connection *con) {
Mutex::Locker l(lock);
available_connections.erase(con);
dispatcher.clear_pending(con);
}
};

bool SyntheticDispatcher::ms_handle_reset(Connection *con) {
workload->handle_reset(con);
return true;
}

TEST_P(MessengerTest, SyntheticStressTest) {
SyntheticWorkload test_msg(8, 32, GetParam(), 100,
Messenger::Policy::stateful_server(0),
Messenger::Policy::lossless_client(0));
for (int i = 0; i < 100; ++i) {
if (!(i % 10)) lderr(g_ceph_context) << "seeding connection " << i << dendl;
test_msg.generate_connection();
}
gen_type rng(time(NULL));
for (int i = 0; i < 5000; ++i) {
if (!(i % 10)) {
lderr(g_ceph_context) << "Op " << i << ": " << dendl;
test_msg.print_internal_state();
}
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val > 90) {
test_msg.generate_connection();
} else if (val > 80) {
test_msg.drop_connection();
} else if (val > 10) {
test_msg.send_message();
} else {
usleep(rand() % 1000 + 500);
}
}
test_msg.wait_for_done();
}

TEST_P(MessengerTest, SyntheticStressTest1) {
SyntheticWorkload test_msg(16, 32, GetParam(), 100,
Messenger::Policy::lossless_peer_reuse(0),
Messenger::Policy::lossless_peer_reuse(0));
for (int i = 0; i < 10; ++i) {
if (!(i % 10)) lderr(g_ceph_context) << "seeding connection " << i << dendl;
test_msg.generate_connection();
}
gen_type rng(time(NULL));
for (int i = 0; i < 10000; ++i) {
if (!(i % 10)) {
lderr(g_ceph_context) << "Op " << i << ": " << dendl;
test_msg.print_internal_state();
}
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val > 80) {
test_msg.generate_connection();
} else if (val > 60) {
test_msg.drop_connection();
} else if (val > 10) {
test_msg.send_message();
} else {
usleep(rand() % 1000 + 500);
}
}
test_msg.wait_for_done();
}


TEST_P(MessengerTest, SyntheticInjectTest) {
uint64_t dispatch_throttle_bytes = g_ceph_context->_conf->ms_dispatch_throttle_bytes;
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "30");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0.1");
g_ceph_context->_conf.set_val("ms_dispatch_throttle_bytes", "16777216");
SyntheticWorkload test_msg(8, 32, GetParam(), 100,
Messenger::Policy::stateful_server(0),
Messenger::Policy::lossless_client(0));
for (int i = 0; i < 100; ++i) {
if (!(i % 10)) lderr(g_ceph_context) << "seeding connection " << i << dendl;
test_msg.generate_connection();
}
gen_type rng(time(NULL));
for (int i = 0; i < 1000; ++i) {
if (!(i % 10)) {
lderr(g_ceph_context) << "Op " << i << ": " << dendl;
test_msg.print_internal_state();
}
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val > 90) {
test_msg.generate_connection();
} else if (val > 80) {
test_msg.drop_connection();
} else if (val > 10) {
test_msg.send_message();
} else {
usleep(rand() % 500 + 100);
}
}
test_msg.wait_for_done();
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "0");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0");
g_ceph_context->_conf.set_val(
"ms_dispatch_throttle_bytes", std::to_string(dispatch_throttle_bytes));
}

TEST_P(MessengerTest, SyntheticInjectTest2) {
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "30");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0.1");
SyntheticWorkload test_msg(8, 16, GetParam(), 100,
Messenger::Policy::lossless_peer_reuse(0),
Messenger::Policy::lossless_peer_reuse(0));
for (int i = 0; i < 100; ++i) {
if (!(i % 10)) lderr(g_ceph_context) << "seeding connection " << i << dendl;
test_msg.generate_connection();
}
gen_type rng(time(NULL));
for (int i = 0; i < 1000; ++i) {
if (!(i % 10)) {
lderr(g_ceph_context) << "Op " << i << ": " << dendl;
test_msg.print_internal_state();
}
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val > 90) {
test_msg.generate_connection();
} else if (val > 80) {
test_msg.drop_connection();
} else if (val > 10) {
test_msg.send_message();
} else {
usleep(rand() % 500 + 100);
}
}
test_msg.wait_for_done();
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "0");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0");
}

TEST_P(MessengerTest, SyntheticInjectTest3) {
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "600");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0.1");
SyntheticWorkload test_msg(8, 16, GetParam(), 100,
Messenger::Policy::stateless_server(0),
Messenger::Policy::lossy_client(0));
for (int i = 0; i < 100; ++i) {
if (!(i % 10)) lderr(g_ceph_context) << "seeding connection " << i << dendl;
test_msg.generate_connection();
}
gen_type rng(time(NULL));
for (int i = 0; i < 1000; ++i) {
if (!(i % 10)) {
lderr(g_ceph_context) << "Op " << i << ": " << dendl;
test_msg.print_internal_state();
}
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val > 90) {
test_msg.generate_connection();
} else if (val > 80) {
test_msg.drop_connection();
} else if (val > 10) {
test_msg.send_message();
} else {
usleep(rand() % 500 + 100);
}
}
test_msg.wait_for_done();
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "0");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0");
}


TEST_P(MessengerTest, SyntheticInjectTest4) {
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "30");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0.1");
g_ceph_context->_conf.set_val("ms_inject_delay_probability", "1");
g_ceph_context->_conf.set_val("ms_inject_delay_type", "client osd");
g_ceph_context->_conf.set_val("ms_inject_delay_max", "5");
SyntheticWorkload test_msg(16, 32, GetParam(), 100,
Messenger::Policy::lossless_peer(0),
Messenger::Policy::lossless_peer(0));
for (int i = 0; i < 100; ++i) {
if (!(i % 10)) lderr(g_ceph_context) << "seeding connection " << i << dendl;
test_msg.generate_connection();
}
gen_type rng(time(NULL));
for (int i = 0; i < 1000; ++i) {
if (!(i % 10)) {
lderr(g_ceph_context) << "Op " << i << ": " << dendl;
test_msg.print_internal_state();
}
boost::uniform_int<> true_false(0, 99);
int val = true_false(rng);
if (val > 95) {
test_msg.generate_connection();
} else if (val > 80) {
// test_msg.drop_connection();
} else if (val > 10) {
test_msg.send_message();
} else {
usleep(rand() % 500 + 100);
}
}
test_msg.wait_for_done();
g_ceph_context->_conf.set_val("ms_inject_socket_failures", "0");
g_ceph_context->_conf.set_val("ms_inject_internal_delays", "0");
g_ceph_context->_conf.set_val("ms_inject_delay_probability", "0");
g_ceph_context->_conf.set_val("ms_inject_delay_type", "");
g_ceph_context->_conf.set_val("ms_inject_delay_max", "0");
}


class MarkdownDispatcher : public Dispatcher {
Mutex lock;
set<ConnectionRef> conns;
bool last_mark;
public:
std::atomic<uint64_t> count = { 0 };
explicit MarkdownDispatcher(bool s): Dispatcher(g_ceph_context), lock("MarkdownDispatcher::lock"),
last_mark(false) {
// don't need authorizers
ms_set_require_authorizer(false);
}
bool ms_can_fast_dispatch_any() const override { return false; }
bool ms_can_fast_dispatch(const Message *m) const override {
switch (m->get_type()) {
case CEPH_MSG_PING:
return true;
default:
return false;
}
}

void ms_handle_fast_connect(Connection *con) override {
lderr(g_ceph_context) << __func__ << " " << con << dendl;
Mutex::Locker l(lock);
conns.insert(con);
}
void ms_handle_fast_accept(Connection *con) override {
Mutex::Locker l(lock);
conns.insert(con);
}
bool ms_dispatch(Message *m) override {
lderr(g_ceph_context) << __func__ << " conn: " << m->get_connection() << dendl;
Mutex::Locker l(lock);
count++;
conns.insert(m->get_connection());
if (conns.size() < 2 && !last_mark) {
m->put();
return true;
}

last_mark = true;
usleep(rand() % 500);
for (set<ConnectionRef>::iterator it = conns.begin(); it != conns.end(); ++it) {
if ((*it) != m->get_connection().get()) {
(*it)->mark_down();
conns.erase(it);
break;
}
}
if (conns.empty())
last_mark = false;
m->put();
return true;
}
bool ms_handle_reset(Connection *con) override {
lderr(g_ceph_context) << __func__ << " " << con << dendl;
Mutex::Locker l(lock);
conns.erase(con);
usleep(rand() % 500);
return true;
}
void ms_handle_remote_reset(Connection *con) override {
Mutex::Locker l(lock);
conns.erase(con);
lderr(g_ceph_context) << __func__ << " " << con << dendl;
}
bool ms_handle_refused(Connection *con) override {
return false;
}
void ms_fast_dispatch(Message *m) override {
ceph_abort();
}
int ms_handle_authentication(Connection *con) override {
return 1;
}
};


// Markdown with external lock
TEST_P(MessengerTest, MarkdownTest) {
Messenger *server_msgr2 = Messenger::create(g_ceph_context, string(GetParam()), entity_name_t::OSD(0), "server", getpid(), 0);
MarkdownDispatcher cli_dispatcher(false), srv_dispatcher(true);
DummyAuthClientServer dummy_auth(g_ceph_context);
dummy_auth.auth_registry.refresh_config();
entity_addr_t bind_addr;
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1:16800");
else
bind_addr.parse("v2:127.0.0.1:16800");
server_msgr->bind(bind_addr);
server_msgr->add_dispatcher_head(&srv_dispatcher);
server_msgr->set_auth_client(&dummy_auth);
server_msgr->set_auth_server(&dummy_auth);
server_msgr->start();
if (string(GetParam()) == "simple")
bind_addr.parse("v1:127.0.0.1:16801");
else
bind_addr.parse("v2:127.0.0.1:16801");
server_msgr2->bind(bind_addr);
server_msgr2->add_dispatcher_head(&srv_dispatcher);
server_msgr2->set_auth_client(&dummy_auth);
server_msgr2->set_auth_server(&dummy_auth);
server_msgr2->start();

client_msgr->add_dispatcher_head(&cli_dispatcher);
client_msgr->set_auth_client(&dummy_auth);
client_msgr->set_auth_server(&dummy_auth);
client_msgr->start();

int i = 1000;
uint64_t last = 0;
bool equal = false;
uint64_t equal_count = 0;
while (i--) {
ConnectionRef conn1 = client_msgr->connect_to(server_msgr->get_mytype(),
server_msgr->get_myaddrs());
ConnectionRef conn2 = client_msgr->connect_to(server_msgr2->get_mytype(),
server_msgr2->get_myaddrs());
MPing *m = new MPing();
ASSERT_EQ(conn1->send_message(m), 0);
m = new MPing();
ASSERT_EQ(conn2->send_message(m), 0);
CHECK_AND_WAIT_TRUE(srv_dispatcher.count > last + 1);
if (srv_dispatcher.count == last) {
lderr(g_ceph_context) << __func__ << " last is " << last << dendl;
equal = true;
equal_count++;
} else {
equal = false;
equal_count = 0;
}
last = srv_dispatcher.count;
if (equal_count)
usleep(1000*500);
ASSERT_FALSE(equal && equal_count > 3);
}
server_msgr->shutdown();
client_msgr->shutdown();
server_msgr2->shutdown();
server_msgr->wait();
client_msgr->wait();
server_msgr2->wait();
delete server_msgr2;
}

INSTANTIATE_TEST_CASE_P(
Messenger,
MessengerTest,
::testing::Values(
"async+posix",
"simple"
)
);

#else

// Google Test may not support value-parameterized tests with some
// compilers. If we use conditional compilation to compile out all
// code referring to the gtest_main library, MSVC linker will not link
// that library at all and consequently complain about missing entry
// point defined in that library (fatal error LNK1561: entry point
// must be defined). This dummy test keeps gtest_main linked in.
TEST(DummyTest, ValueParameterizedTestsAreNotSupportedOnThisPlatform) {}

#endif


int main(int argc, char **argv) {
vector<const char*> args;
argv_to_vec(argc, (const char **)argv, args);

auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT,
CODE_ENVIRONMENT_UTILITY,
CINIT_FLAG_NO_DEFAULT_CONFIG_FILE);
g_ceph_context->_conf.set_val("auth_cluster_required", "none");
g_ceph_context->_conf.set_val("auth_service_required", "none");
g_ceph_context->_conf.set_val("auth_client_required", "none");
g_ceph_context->_conf.set_val("keyring", "/dev/null");
g_ceph_context->_conf.set_val("enable_experimental_unrecoverable_data_corrupting_features", "ms-type-async");
g_ceph_context->_conf.set_val("ms_die_on_bad_msg", "true");
g_ceph_context->_conf.set_val("ms_die_on_old_message", "true");
g_ceph_context->_conf.set_val("ms_max_backoff", "1");
common_init_finish(g_ceph_context);

::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}

/*
* Local Variables:
* compile-command: "cd ../.. ; make -j4 ceph_test_msgr && valgrind --tool=memcheck ./ceph_test_msgr"
* End:
*/
    (1-1/1)