ceph/src/test/mon/test-mon-msg.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4 * Ceph - scalable distributed file system
   5 *
   6 * Copyright (C) 2014 Red Hat
   7 *
   8 * This is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU Lesser General Public
  10 * License version 2.1, as published by the Free Software
  11 * Foundation. See file COPYING.
  12 */
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <iostream>
  16 #include <sstream>
  17 #include <time.h>
  18 #include <stdlib.h>
  19 #include <map>
  20
  21 #include "global/global_init.h"
  22 #include "global/global_context.h"
  23 #include "common/ceph_argparse.h"
  24 #include "common/dout.h"
  25 #include "common/debug.h"
  26 #include "common/Cond.h"
  27 #include "common/Mutex.h"
  28 #include "common/Timer.h"
  29 #include "common/errno.h"
  30 #include "mon/MonClient.h"
  31 #include "msg/Dispatcher.h"
  32 #include "include/err.h"
  33 #include <boost/scoped_ptr.hpp>
  34
  35 #include "gtest/gtest.h"
  36
  37 #include "common/config.h"
  38 #include "include/assert.h"
  39
  40 #include "messages/MMonProbe.h"
  41 #include "messages/MRoute.h"
  42 #include "messages/MGenericMessage.h"
  43 #include "messages/MMonJoin.h"
  44
  45 #define dout_context g_ceph_context
  46 #define dout_subsys ceph_subsys_
  47 #undef dout_prefix
  48 #define dout_prefix *_dout << "test-mon-msg "
  49
  50 class MonClientHelper : public Dispatcher
  51 {
  52 protected:
  53   CephContext *cct;
  54   Messenger *msg;
  55   MonClient monc;
  56
  57   Mutex lock;
  58
  59   set<int> wanted;
  60
  61 public:
  62
  63   explicit MonClientHelper(CephContext *cct_)
  64     : Dispatcher(cct_),
  65       cct(cct_),
  66       monc(cct_),
  67       lock("mon-msg-test::lock")
  68   { }
  69
  70
  71   int post_init() {
  72     dout(1) << __func__ << dendl;
  73     if (!msg)
  74       return -EINVAL;
  75     msg->add_dispatcher_tail(this);
  76     return 0;
  77   }
  78
  79   int init_messenger() {
  80     dout(1) << __func__ << dendl;
  81
  82     std::string public_msgr_type = cct->_conf->ms_public_type.empty() ? cct->_conf->get_val<std::string>("ms_type") : cct->_conf->ms_public_type;
  83     msg = Messenger::create(cct, public_msgr_type, entity_name_t::CLIENT(-1),
  84                             "test-mon-msg", 0, 0);
  85     assert(msg != NULL);
  86     msg->set_default_policy(Messenger::Policy::lossy_client(0));
  87     dout(0) << __func__ << " starting messenger at "
  88             << msg->get_myaddr() << dendl;
  89     msg->start();
  90     return 0;
  91   }
  92
  93   int init_monc() {
  94     dout(1) << __func__ << dendl;
  95     assert(msg != NULL);
  96     int err = monc.build_initial_monmap();
  97     if (err < 0) {
  98       derr << __func__ << " error building monmap: "
  99            << cpp_strerror(err) << dendl;
 100       return err;
 101     }
 102
 103     monc.set_messenger(msg);
 104     msg->add_dispatcher_head(&monc);
 105
 106     monc.set_want_keys(CEPH_ENTITY_TYPE_MON);
 107     err = monc.init();
 108     if (err < 0) {
 109       derr << __func__ << " monc init failed: "
 110            << cpp_strerror(err) << dendl;
 111       goto fail;
 112     }
 113
 114     err = monc.authenticate();
 115     if (err < 0) {
 116       derr << __func__ << " monc auth failed: "
 117            << cpp_strerror(err) << dendl;
 118       goto fail_monc;
 119     }
 120     monc.wait_auth_rotating(30.0);
 121     monc.renew_subs();
 122     dout(0) << __func__ << " finished" << dendl;
 123     return 0;
 124
 125 fail_monc:
 126     derr << __func__ << " failing monc" << dendl;
 127     monc.shutdown();
 128 fail:
 129     return err;
 130   }
 131
 132   void shutdown_messenger() {
 133     dout(0) << __func__ << dendl;
 134     msg->shutdown();
 135     msg->wait();
 136   }
 137
 138   void shutdown_monc() {
 139     dout(0) << __func__ << dendl;
 140     monc.shutdown();
 141   }
 142
 143   void shutdown() {
 144     dout(0) << __func__ << dendl;
 145     shutdown_monc();
 146     shutdown_messenger();
 147   }
 148
 149   MonMap *get_monmap() {
 150     return &monc.monmap;
 151   }
 152
 153   int init() {
 154     int err = init_messenger();
 155     if (err < 0)
 156       goto fail;
 157     err = init_monc();
 158     if (err < 0)
 159       goto fail_msgr;
 160     err = post_init();
 161     if (err < 0)
 162       goto fail_monc;
 163     return 0;
 164 fail_monc:
 165     shutdown_monc();
 166 fail_msgr:
 167     shutdown_messenger();
 168 fail:
 169     return err;
 170   }
 171
 172   virtual void handle_wanted(Message *m) { }
 173
 174   bool handle_message(Message *m) {
 175     dout(1) << __func__ << " " << *m << dendl;
 176     if (!is_wanted(m)) {
 177       dout(10) << __func__ << " not wanted" << dendl;
 178       return false;
 179     }
 180     handle_wanted(m);
 181     m->put();
 182
 183     return true;
 184   }
 185
 186   bool ms_dispatch(Message *m) override {
 187     return handle_message(m);
 188   }
 189   void ms_handle_connect(Connection *con) override { }
 190   void ms_handle_remote_reset(Connection *con) override { }
 191   bool ms_handle_reset(Connection *con) override { return false; }
 192   bool ms_handle_refused(Connection *con) override { return false; }
 193
 194   bool is_wanted(Message *m) {
 195     dout(20) << __func__ << " " << *m << " type " << m->get_type() << dendl;
 196     return (wanted.find(m->get_type()) != wanted.end());
 197   }
 198
 199   void add_wanted(int t) {
 200     dout(20) << __func__ << " type " << t << dendl;
 201     wanted.insert(t);
 202   }
 203
 204   void rm_wanted(int t) {
 205     dout(20) << __func__ << " type " << t << dendl;
 206     wanted.erase(t);
 207   }
 208
 209   void send_message(Message *m) {
 210     dout(15) << __func__ << " " << *m << dendl;
 211     monc.send_mon_message(m);
 212   }
 213
 214   void wait() { msg->wait(); }
 215 };
 216
 217 class MonMsgTest : public MonClientHelper,
 218                    public ::testing::Test
 219 {
 220 protected:
 221   int reply_type;
 222   Message *reply_msg = nullptr;
 223   Mutex lock;
 224   Cond cond;
 225
 226   MonMsgTest() :
 227     MonClientHelper(g_ceph_context),
 228     lock("lock") { }
 229
 230 public:
 231   void SetUp() override {
 232     reply_type = -1;
 233     if (reply_msg) {
 234       reply_msg->put();
 235       reply_msg = nullptr;
 236     }
 237     ASSERT_EQ(init(), 0);
 238   }
 239
 240   void TearDown() override {
 241     shutdown();
 242     if (reply_msg) {
 243       reply_msg->put();
 244       reply_msg = nullptr;
 245     }
 246   }
 247
 248   void handle_wanted(Message *m) override {
 249     lock.Lock();
 250     // caller will put() after they call us, so hold on to a ref
 251     m->get();
 252     reply_msg = m;
 253     cond.Signal();
 254     lock.Unlock();
 255   }
 256
 257   Message *send_wait_reply(Message *m, int t, double timeout=30.0) {
 258     lock.Lock();
 259     reply_type = t;
 260     add_wanted(t);
 261     send_message(m);
 262
 263     int err = 0;
 264     if (timeout > 0) {
 265       utime_t cond_timeout;
 266       cond_timeout.set_from_double(timeout);
 267       utime_t s = ceph_clock_now();
 268       err = cond.WaitInterval(lock, cond_timeout);
 269       utime_t e = ceph_clock_now();
 270       dout(20) << __func__ << " took " << (e-s) << " seconds" << dendl;
 271     } else {
 272       err = cond.Wait(lock);
 273     }
 274     rm_wanted(t);
 275     lock.Unlock();
 276     if (err > 0) {
 277       dout(20) << __func__ << " error: " << cpp_strerror(err) << dendl;
 278       return (Message*)((long)-err);
 279     }
 280
 281     if (!reply_msg)
 282       dout(20) << __func__ << " reply_msg is nullptr" << dendl;
 283     else
 284       dout(20) << __func__ << " reply_msg " << *reply_msg << dendl;
 285     return reply_msg;
 286   }
 287 };
 288
 289 TEST_F(MonMsgTest, MMonProbeTest)
 290 {
 291   Message *m = new MMonProbe(get_monmap()->fsid,
 292                         MMonProbe::OP_PROBE, "b", false);
 293   Message *r = send_wait_reply(m, MSG_MON_PROBE);
 294   ASSERT_NE(IS_ERR(r), 0);
 295   ASSERT_EQ(PTR_ERR(r), -ETIMEDOUT);
 296 }
 297
 298 TEST_F(MonMsgTest, MRouteTest)
 299 {
 300   Message *payload = new MGenericMessage(CEPH_MSG_SHUTDOWN);
 301   MRoute *m = new MRoute;
 302   m->msg = payload;
 303   m->dest = msg->get_myinst();
 304   Message *r = send_wait_reply(m, CEPH_MSG_SHUTDOWN);
 305   // we want an error
 306   ASSERT_NE(IS_ERR(r), 0);
 307   ASSERT_EQ(PTR_ERR(r), -ETIMEDOUT);
 308 }
 309
 310 /* MMonScrub and MMonSync have other safeguards in place that prevent
 311  * us from actually receiving a reply even if the message is handled
 312  * by the monitor due to lack of cap checking.
 313  */
 314 TEST_F(MonMsgTest, MMonJoin)
 315 {
 316   Message *m = new MMonJoin(get_monmap()->fsid, string("client"),
 317                             msg->get_myaddr());
 318   send_wait_reply(m, MSG_MON_PAXOS, 10.0);
 319
 320   int r = monc.get_monmap();
 321   ASSERT_EQ(r, 0);
 322   ASSERT_FALSE(monc.monmap.contains("client"));
 323 }
 324
 325 int main(int argc, char *argv[])
 326 {
 327   vector<const char*> args;
 328   argv_to_vec(argc, (const char **)argv, args);
 329
 330   auto cct = global_init(nullptr, args,
 331                          CEPH_ENTITY_TYPE_CLIENT, CODE_ENVIRONMENT_UTILITY,
 332                          0);
 333   common_init_finish(g_ceph_context);
 334   g_ceph_context->_conf->apply_changes(NULL);
 335   ::testing::InitGoogleTest(&argc, argv);
 336
 337   return RUN_ALL_TESTS();
 338 }
 339