ceph/src/common/ceph_context.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) 2011 New Dream Network
   7  * Copyright (C) 2017 OVH
   8  *
   9  * This is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License version 2.1, as published by the Free Software
  12  * Foundation.  See file COPYING.
  13  *
  14  */
  15
  16 #include <boost/algorithm/string.hpp>
  17
  18 #include "include/mempool.h"
  19 #include "common/admin_socket.h"
  20 #include "common/perf_counters.h"
  21 #include "common/code_environment.h"
  22 #include "common/ceph_crypto.h"
  23 #include "common/HeartbeatMap.h"
  24 #include "common/errno.h"
  25 #include "common/Graylog.h"
  26 #include "auth/Crypto.h"
  27 #include "include/str_list.h"
  28 #include "common/PluginRegistry.h"
  29
  30 using ceph::bufferlist;
  31 using ceph::HeartbeatMap;
  32
  33 namespace {
  34
  35 class LockdepObs : public md_config_obs_t {
  36 public:
  37   explicit LockdepObs(CephContext *cct) : m_cct(cct), m_registered(false) {
  38   }
  39   ~LockdepObs() override {
  40     if (m_registered) {
  41       lockdep_unregister_ceph_context(m_cct);
  42     }
  43   }
  44
  45   const char** get_tracked_conf_keys() const override {
  46     static const char *KEYS[] = {"lockdep", NULL};
  47     return KEYS;
  48   }
  49
  50   void handle_conf_change(const md_config_t *conf,
  51                           const std::set <std::string> &changed) override {
  52     if (conf->lockdep && !m_registered) {
  53       lockdep_register_ceph_context(m_cct);
  54       m_registered = true;
  55     } else if (!conf->lockdep && m_registered) {
  56       lockdep_unregister_ceph_context(m_cct);
  57       m_registered = false;
  58     }
  59   }
  60 private:
  61   CephContext *m_cct;
  62   bool m_registered;
  63 };
  64
  65 class MempoolObs : public md_config_obs_t,
  66                   public AdminSocketHook {
  67   CephContext *cct;
  68
  69 public:
  70   explicit MempoolObs(CephContext *cct) : cct(cct) {
  71     cct->_conf->add_observer(this);
  72     int r = cct->get_admin_socket()->register_command(
  73       "dump_mempools",
  74       "dump_mempools",
  75       this,
  76       "get mempool stats");
  77     assert(r == 0);
  78   }
  79   ~MempoolObs() override {
  80     cct->_conf->remove_observer(this);
  81     cct->get_admin_socket()->unregister_command("dump_mempools");
  82   }
  83
  84   // md_config_obs_t
  85   const char** get_tracked_conf_keys() const override {
  86     static const char *KEYS[] = {
  87       "mempool_debug",
  88       NULL
  89     };
  90     return KEYS;
  91   }
  92
  93   void handle_conf_change(const md_config_t *conf,
  94                           const std::set <std::string> &changed) override {
  95     if (changed.count("mempool_debug")) {
  96       mempool::set_debug_mode(cct->_conf->mempool_debug);
  97     }
  98   }
  99
 100   // AdminSocketHook
 101   bool call(std::string command, cmdmap_t& cmdmap, std::string format,
 102             bufferlist& out) override {
 103     if (command == "dump_mempools") {
 104       std::unique_ptr<Formatter> f(Formatter::create(format));
 105       f->open_object_section("mempools");
 106       mempool::dump(f.get());
 107       f->close_section();
 108       f->flush(out);
 109       return true;
 110     }
 111     return false;
 112   }
 113 };
 114
 115 } // anonymous namespace
 116
 117 class CephContextServiceThread : public Thread
 118 {
 119 public:
 120   explicit CephContextServiceThread(CephContext *cct)
 121     : _lock("CephContextServiceThread::_lock"),
 122       _reopen_logs(false), _exit_thread(false), _cct(cct)
 123   {
 124   }
 125
 126   ~CephContextServiceThread() override {}
 127
 128   void *entry() override
 129   {
 130     while (1) {
 131       Mutex::Locker l(_lock);
 132
 133       if (_cct->_conf->heartbeat_interval) {
 134         utime_t interval(_cct->_conf->heartbeat_interval, 0);
 135         _cond.WaitInterval(_lock, interval);
 136       } else
 137         _cond.Wait(_lock);
 138
 139       if (_exit_thread) {
 140         break;
 141       }
 142
 143       if (_reopen_logs) {
 144         _cct->_log->reopen_log_file();
 145         _reopen_logs = false;
 146       }
 147       _cct->_heartbeat_map->check_touch_file();
 148
 149       // refresh the perf coutners
 150       _cct->refresh_perf_values();
 151     }
 152     return NULL;
 153   }
 154
 155   void reopen_logs()
 156   {
 157     Mutex::Locker l(_lock);
 158     _reopen_logs = true;
 159     _cond.Signal();
 160   }
 161
 162   void exit_thread()
 163   {
 164     Mutex::Locker l(_lock);
 165     _exit_thread = true;
 166     _cond.Signal();
 167   }
 168
 169 private:
 170   Mutex _lock;
 171   Cond _cond;
 172   bool _reopen_logs;
 173   bool _exit_thread;
 174   CephContext *_cct;
 175 };
 176
 177
 178 /**
 179  * observe logging config changes
 180  *
 181  * The logging subsystem sits below most of the ceph code, including
 182  * the config subsystem, to keep it simple and self-contained.  Feed
 183  * logging-related config changes to the log.
 184  */
 185 class LogObs : public md_config_obs_t {
 186   ceph::logging::Log *log;
 187
 188 public:
 189   explicit LogObs(ceph::logging::Log *l) : log(l) {}
 190
 191   const char** get_tracked_conf_keys() const override {
 192     static const char *KEYS[] = {
 193       "log_file",
 194       "log_max_new",
 195       "log_max_recent",
 196       "log_to_syslog",
 197       "err_to_syslog",
 198       "log_to_stderr",
 199       "err_to_stderr",
 200       "log_to_graylog",
 201       "err_to_graylog",
 202       "log_graylog_host",
 203       "log_graylog_port",
 204       "fsid",
 205       "host",
 206       NULL
 207     };
 208     return KEYS;
 209   }
 210
 211   void handle_conf_change(const md_config_t *conf,
 212                           const std::set <std::string> &changed) override {
 213     // stderr
 214     if (changed.count("log_to_stderr") || changed.count("err_to_stderr")) {
 215       int l = conf->log_to_stderr ? 99 : (conf->err_to_stderr ? -1 : -2);
 216       log->set_stderr_level(l, l);
 217     }
 218
 219     // syslog
 220     if (changed.count("log_to_syslog")) {
 221       int l = conf->log_to_syslog ? 99 : (conf->err_to_syslog ? -1 : -2);
 222       log->set_syslog_level(l, l);
 223     }
 224
 225     // file
 226     if (changed.count("log_file")) {
 227       log->set_log_file(conf->log_file);
 228       log->reopen_log_file();
 229     }
 230
 231     if (changed.count("log_max_new")) {
 232
 233       log->set_max_new(conf->log_max_new);
 234     }
 235
 236     if (changed.count("log_max_recent")) {
 237       log->set_max_recent(conf->log_max_recent);
 238     }
 239
 240     // graylog
 241     if (changed.count("log_to_graylog") || changed.count("err_to_graylog")) {
 242       int l = conf->log_to_graylog ? 99 : (conf->err_to_graylog ? -1 : -2);
 243       log->set_graylog_level(l, l);
 244
 245       if (conf->log_to_graylog || conf->err_to_graylog) {
 246         log->start_graylog();
 247       } else if (! (conf->log_to_graylog && conf->err_to_graylog)) {
 248         log->stop_graylog();
 249       }
 250     }
 251
 252     if (log->graylog() && (changed.count("log_graylog_host") || changed.count("log_graylog_port"))) {
 253       log->graylog()->set_destination(conf->log_graylog_host, conf->log_graylog_port);
 254     }
 255
 256     // metadata
 257     if (log->graylog() && changed.count("host")) {
 258       log->graylog()->set_hostname(conf->host);
 259     }
 260
 261     if (log->graylog() && changed.count("fsid")) {
 262       log->graylog()->set_fsid(conf->fsid);
 263     }
 264   }
 265 };
 266
 267
 268 // cct config watcher
 269 class CephContextObs : public md_config_obs_t {
 270   CephContext *cct;
 271
 272 public:
 273   explicit CephContextObs(CephContext *cct) : cct(cct) {}
 274
 275   const char** get_tracked_conf_keys() const override {
 276     static const char *KEYS[] = {
 277       "enable_experimental_unrecoverable_data_corrupting_features",
 278       "crush_location",
 279       NULL
 280     };
 281     return KEYS;
 282   }
 283
 284   void handle_conf_change(const md_config_t *conf,
 285                           const std::set <std::string> &changed) override {
 286     if (changed.count(
 287           "enable_experimental_unrecoverable_data_corrupting_features")) {
 288       ceph_spin_lock(&cct->_feature_lock);
 289       get_str_set(
 290         conf->enable_experimental_unrecoverable_data_corrupting_features,
 291         cct->_experimental_features);
 292       ceph_spin_unlock(&cct->_feature_lock);
 293       if (getenv("CEPH_DEV") == NULL) {
 294         if (!cct->_experimental_features.empty()) {
 295           if (cct->_experimental_features.count("*")) {
 296             lderr(cct) << "WARNING: all dangerous and experimental features are enabled." << dendl;
 297           } else {
 298             lderr(cct) << "WARNING: the following dangerous and experimental features are enabled: "
 299               << cct->_experimental_features << dendl;
 300           }
 301         }
 302       }
 303
 304     }
 305     if (changed.count("crush_location")) {
 306       cct->crush_location.update_from_conf();
 307     }
 308   }
 309 };
 310
 311 bool CephContext::check_experimental_feature_enabled(const std::string& feat)
 312 {
 313   stringstream message;
 314   bool enabled = check_experimental_feature_enabled(feat, &message);
 315   lderr(this) << message.str() << dendl;
 316   return enabled;
 317 }
 318
 319 bool CephContext::check_experimental_feature_enabled(const std::string& feat,
 320                                                      std::ostream *message)
 321 {
 322   ceph_spin_lock(&_feature_lock);
 323   bool enabled = (_experimental_features.count(feat) ||
 324                   _experimental_features.count("*"));
 325   ceph_spin_unlock(&_feature_lock);
 326
 327   if (enabled) {
 328     (*message) << "WARNING: experimental feature '" << feat << "' is enabled\n";
 329     (*message) << "Please be aware that this feature is experimental, untested,\n";
 330     (*message) << "unsupported, and may result in data corruption, data loss,\n";
 331     (*message) << "and/or irreparable damage to your cluster.  Do not use\n";
 332     (*message) << "feature with important data.\n";
 333   } else {
 334     (*message) << "*** experimental feature '" << feat << "' is not enabled ***\n";
 335     (*message) << "This feature is marked as experimental, which means it\n";
 336     (*message) << " - is untested\n";
 337     (*message) << " - is unsupported\n";
 338     (*message) << " - may corrupt your data\n";
 339     (*message) << " - may break your cluster is an unrecoverable fashion\n";
 340     (*message) << "To enable this feature, add this to your ceph.conf:\n";
 341     (*message) << "  enable experimental unrecoverable data corrupting features = " << feat << "\n";
 342   }
 343   return enabled;
 344 }
 345
 346 // perfcounter hooks
 347
 348 class CephContextHook : public AdminSocketHook {
 349   CephContext *m_cct;
 350
 351 public:
 352   explicit CephContextHook(CephContext *cct) : m_cct(cct) {}
 353
 354   bool call(std::string command, cmdmap_t& cmdmap, std::string format,
 355             bufferlist& out) override {
 356     m_cct->do_command(command, cmdmap, format, &out);
 357     return true;
 358   }
 359 };
 360
 361 void CephContext::do_command(std::string command, cmdmap_t& cmdmap,
 362                              std::string format, bufferlist *out)
 363 {
 364   Formatter *f = Formatter::create(format, "json-pretty", "json-pretty");
 365   stringstream ss;
 366   for (cmdmap_t::iterator it = cmdmap.begin(); it != cmdmap.end(); ++it) {
 367     if (it->first != "prefix") {
 368       ss << it->first  << ":" << cmd_vartype_stringify(it->second) << " ";
 369     }
 370   }
 371   lgeneric_dout(this, 1) << "do_command '" << command << "' '"
 372                          << ss.str() << dendl;
 373   if (command == "perfcounters_dump" || command == "1" ||
 374       command == "perf dump") {
 375     std::string logger;
 376     std::string counter;
 377     cmd_getval(this, cmdmap, "logger", logger);
 378     cmd_getval(this, cmdmap, "counter", counter);
 379     _perf_counters_collection->dump_formatted(f, false, logger, counter);
 380   }
 381   else if (command == "perfcounters_schema" || command == "2" ||
 382     command == "perf schema") {
 383     _perf_counters_collection->dump_formatted(f, true);
 384   }
 385   else if (command == "perf histogram dump") {
 386     std::string logger;
 387     std::string counter;
 388     cmd_getval(this, cmdmap, "logger", logger);
 389     cmd_getval(this, cmdmap, "counter", counter);
 390     _perf_counters_collection->dump_formatted_histograms(f, false, logger,
 391                                                          counter);
 392   }
 393   else if (command == "perf histogram schema") {
 394     _perf_counters_collection->dump_formatted_histograms(f, true);
 395   }
 396   else if (command == "perf reset") {
 397     std::string var;
 398     string section = command;
 399     f->open_object_section(section.c_str());
 400     if (!cmd_getval(this, cmdmap, "var", var)) {
 401       f->dump_string("error", "syntax error: 'perf reset <var>'");
 402     } else {
 403      if(!_perf_counters_collection->reset(var))
 404         f->dump_stream("error") << "Not find: " << var;
 405      else
 406        f->dump_string("success", command + ' ' + var);
 407     }
 408     f->close_section();
 409   }
 410   else {
 411     string section = command;
 412     boost::replace_all(section, " ", "_");
 413     f->open_object_section(section.c_str());
 414     if (command == "config show") {
 415       _conf->show_config(f);
 416     }
 417     else if (command == "config set") {
 418       std::string var;
 419       std::vector<std::string> val;
 420
 421       if (!(cmd_getval(this, cmdmap, "var", var)) ||
 422           !(cmd_getval(this, cmdmap, "val", val))) {
 423         f->dump_string("error", "syntax error: 'config set <var> <value>'");
 424       } else {
 425         // val may be multiple words
 426         string valstr = str_join(val, " ");
 427         int r = _conf->set_val(var.c_str(), valstr.c_str());
 428         if (r < 0) {
 429           f->dump_stream("error") << "error setting '" << var << "' to '" << valstr << "': " << cpp_strerror(r);
 430         } else {
 431           ostringstream ss;
 432           _conf->apply_changes(&ss);
 433           f->dump_string("success", ss.str());
 434         }
 435       }
 436     } else if (command == "config get") {
 437       std::string var;
 438       if (!cmd_getval(this, cmdmap, "var", var)) {
 439         f->dump_string("error", "syntax error: 'config get <var>'");
 440       } else {
 441         char buf[4096];
 442         memset(buf, 0, sizeof(buf));
 443         char *tmp = buf;
 444         int r = _conf->get_val(var.c_str(), &tmp, sizeof(buf));
 445         if (r < 0) {
 446             f->dump_stream("error") << "error getting '" << var << "': " << cpp_strerror(r);
 447         } else {
 448             f->dump_string(var.c_str(), buf);
 449         }
 450       }
 451     } else if (command == "config diff") {
 452       md_config_t def_conf;
 453       def_conf.set_val("cluster", _conf->cluster);
 454       def_conf.name = _conf->name;
 455       def_conf.set_val("host", _conf->host);
 456       def_conf.apply_changes(NULL);
 457
 458       map<string,pair<string,string> > diff;
 459       set<string> unknown;
 460       def_conf.diff(_conf, &diff, &unknown);
 461       f->open_object_section("diff");
 462
 463       f->open_object_section("current");
 464       for (map<string,pair<string,string> >::iterator p = diff.begin();
 465            p != diff.end(); ++p) {
 466         f->dump_string(p->first.c_str(), p->second.second);
 467       }
 468       f->close_section(); // current
 469       f->open_object_section("defaults");
 470       for (map<string,pair<string,string> >::iterator p = diff.begin();
 471            p != diff.end(); ++p) {
 472         f->dump_string(p->first.c_str(), p->second.first);
 473       }
 474       f->close_section(); // defaults
 475       f->close_section(); // diff
 476
 477       f->open_array_section("unknown");
 478       for (set<string>::iterator p = unknown.begin();
 479            p != unknown.end(); ++p) {
 480         f->dump_string("option", *p);
 481       }
 482       f->close_section(); // unknown
 483     } else if (command == "config diff get") {
 484       std::string setting;
 485       if (!cmd_getval(this, cmdmap, "var", setting)) {
 486         f->dump_string("error", "syntax error: 'config diff get <var>'");
 487       } else {
 488         md_config_t def_conf;
 489         def_conf.set_val("cluster", _conf->cluster);
 490         def_conf.name = _conf->name;
 491         def_conf.set_val("host", _conf->host);
 492         def_conf.apply_changes(NULL);
 493
 494         map<string, pair<string, string>> diff;
 495         set<string> unknown;
 496         def_conf.diff(_conf, &diff, &unknown, setting);
 497         f->open_object_section("diff");
 498         f->open_object_section("current");
 499
 500         for (const auto& p : diff) {
 501           f->dump_string(p.first.c_str(), p.second.second);
 502         }
 503         f->close_section();   //-- current
 504
 505         f->open_object_section("defaults");
 506         for (const auto& p : diff) {
 507           f->dump_string(p.first.c_str(), p.second.first);
 508         }
 509         f->close_section();   //-- defaults
 510         f->close_section();   //-- diff
 511       }
 512     } else if (command == "log flush") {
 513       _log->flush();
 514     }
 515     else if (command == "log dump") {
 516       _log->dump_recent();
 517     }
 518     else if (command == "log reopen") {
 519       _log->reopen_log_file();
 520     }
 521     else {
 522       assert(0 == "registered under wrong command?");
 523     }
 524     f->close_section();
 525   }
 526   f->flush(*out);
 527   delete f;
 528   lgeneric_dout(this, 1) << "do_command '" << command << "' '" << ss.str()
 529                          << "result is " << out->length() << " bytes" << dendl;
 530 }
 531
 532
 533 CephContext::CephContext(uint32_t module_type_, int init_flags_)
 534   : nref(1),
 535     _conf(new md_config_t()),
 536     _log(NULL),
 537     _module_type(module_type_),
 538     _init_flags(init_flags_),
 539     _set_uid(0),
 540     _set_gid(0),
 541     _set_uid_string(),
 542     _set_gid_string(),
 543     _crypto_inited(false),
 544     _service_thread(NULL),
 545     _log_obs(NULL),
 546     _admin_socket(NULL),
 547     _perf_counters_collection(NULL),
 548     _perf_counters_conf_obs(NULL),
 549     _heartbeat_map(NULL),
 550     _crypto_none(NULL),
 551     _crypto_aes(NULL),
 552     _plugin_registry(NULL),
 553     _lockdep_obs(NULL),
 554     crush_location(this),
 555     _cct_perf(NULL)
 556 {
 557   ceph_spin_init(&_service_thread_lock);
 558   ceph_spin_init(&_associated_objs_lock);
 559   ceph_spin_init(&_fork_watchers_lock);
 560   ceph_spin_init(&_feature_lock);
 561   ceph_spin_init(&_cct_perf_lock);
 562
 563   _log = new ceph::logging::Log(&_conf->subsys);
 564   _log->start();
 565
 566   _log_obs = new LogObs(_log);
 567   _conf->add_observer(_log_obs);
 568
 569   _cct_obs = new CephContextObs(this);
 570   _conf->add_observer(_cct_obs);
 571
 572   _lockdep_obs = new LockdepObs(this);
 573   _conf->add_observer(_lockdep_obs);
 574
 575   _perf_counters_collection = new PerfCountersCollection(this);
 576
 577   _admin_socket = new AdminSocket(this);
 578   _heartbeat_map = new HeartbeatMap(this);
 579
 580   _plugin_registry = new PluginRegistry(this);
 581
 582   _admin_hook = new CephContextHook(this);
 583   _admin_socket->register_command("perfcounters_dump", "perfcounters_dump", _admin_hook, "");
 584   _admin_socket->register_command("1", "1", _admin_hook, "");
 585   _admin_socket->register_command("perf dump", "perf dump name=logger,type=CephString,req=false name=counter,type=CephString,req=false", _admin_hook, "dump perfcounters value");
 586   _admin_socket->register_command("perfcounters_schema", "perfcounters_schema", _admin_hook, "");
 587   _admin_socket->register_command("perf histogram dump", "perf histogram dump name=logger,type=CephString,req=false name=counter,type=CephString,req=false", _admin_hook, "dump perf histogram values");
 588   _admin_socket->register_command("2", "2", _admin_hook, "");
 589   _admin_socket->register_command("perf schema", "perf schema", _admin_hook, "dump perfcounters schema");
 590   _admin_socket->register_command("perf histogram schema", "perf histogram schema", _admin_hook, "dump perf histogram schema");
 591   _admin_socket->register_command("perf reset", "perf reset name=var,type=CephString", _admin_hook, "perf reset <name>: perf reset all or one perfcounter name");
 592   _admin_socket->register_command("config show", "config show", _admin_hook, "dump current config settings");
 593   _admin_socket->register_command("config set", "config set name=var,type=CephString name=val,type=CephString,n=N",  _admin_hook, "config set <field> <val> [<val> ...]: set a config variable");
 594   _admin_socket->register_command("config get", "config get name=var,type=CephString", _admin_hook, "config get <field>: get the config value");
 595   _admin_socket->register_command("config diff",
 596       "config diff", _admin_hook,
 597       "dump diff of current config and default config");
 598   _admin_socket->register_command("config diff get",
 599       "config diff get name=var,type=CephString", _admin_hook,
 600       "dump diff get <field>: dump diff of current and default config setting <field>");
 601   _admin_socket->register_command("log flush", "log flush", _admin_hook, "flush log entries to log file");
 602   _admin_socket->register_command("log dump", "log dump", _admin_hook, "dump recent log entries to log file");
 603   _admin_socket->register_command("log reopen", "log reopen", _admin_hook, "reopen log file");
 604
 605   _crypto_none = CryptoHandler::create(CEPH_CRYPTO_NONE);
 606   _crypto_aes = CryptoHandler::create(CEPH_CRYPTO_AES);
 607
 608   MempoolObs *mempool_obs = 0;
 609   lookup_or_create_singleton_object(mempool_obs, "mempool_obs");
 610 }
 611
 612 CephContext::~CephContext()
 613 {
 614   join_service_thread();
 615
 616   for (map<string, SingletonWrapper*>::iterator it = _associated_objs.begin();
 617        it != _associated_objs.end(); ++it)
 618     delete it->second;
 619
 620   if (_cct_perf) {
 621     _perf_counters_collection->remove(_cct_perf);
 622     delete _cct_perf;
 623     _cct_perf = NULL;
 624   }
 625
 626   delete _plugin_registry;
 627
 628   _admin_socket->unregister_command("perfcounters_dump");
 629   _admin_socket->unregister_command("1");
 630   _admin_socket->unregister_command("perf dump");
 631   _admin_socket->unregister_command("perfcounters_schema");
 632   _admin_socket->unregister_command("perf histogram dump");
 633   _admin_socket->unregister_command("2");
 634   _admin_socket->unregister_command("perf schema");
 635   _admin_socket->unregister_command("perf histogram schema");
 636   _admin_socket->unregister_command("perf reset");
 637   _admin_socket->unregister_command("config show");
 638   _admin_socket->unregister_command("config set");
 639   _admin_socket->unregister_command("config get");
 640   _admin_socket->unregister_command("config diff");
 641   _admin_socket->unregister_command("config diff get");
 642   _admin_socket->unregister_command("log flush");
 643   _admin_socket->unregister_command("log dump");
 644   _admin_socket->unregister_command("log reopen");
 645   delete _admin_hook;
 646   delete _admin_socket;
 647
 648   delete _heartbeat_map;
 649
 650   delete _perf_counters_collection;
 651   _perf_counters_collection = NULL;
 652
 653   delete _perf_counters_conf_obs;
 654   _perf_counters_conf_obs = NULL;
 655
 656   _conf->remove_observer(_log_obs);
 657   delete _log_obs;
 658   _log_obs = NULL;
 659
 660   _conf->remove_observer(_cct_obs);
 661   delete _cct_obs;
 662   _cct_obs = NULL;
 663
 664   _conf->remove_observer(_lockdep_obs);
 665   delete _lockdep_obs;
 666   _lockdep_obs = NULL;
 667
 668   _log->stop();
 669   delete _log;
 670   _log = NULL;
 671
 672   delete _conf;
 673   ceph_spin_destroy(&_service_thread_lock);
 674   ceph_spin_destroy(&_fork_watchers_lock);
 675   ceph_spin_destroy(&_associated_objs_lock);
 676   ceph_spin_destroy(&_feature_lock);
 677   ceph_spin_destroy(&_cct_perf_lock);
 678
 679   delete _crypto_none;
 680   delete _crypto_aes;
 681   if (_crypto_inited)
 682     ceph::crypto::shutdown(g_code_env == CODE_ENVIRONMENT_LIBRARY);
 683 }
 684
 685 void CephContext::put() {
 686   if (--nref == 0) {
 687     ANNOTATE_HAPPENS_AFTER(&nref);
 688     ANNOTATE_HAPPENS_BEFORE_FORGET_ALL(&nref);
 689     delete this;
 690   } else {
 691     ANNOTATE_HAPPENS_BEFORE(&nref);
 692   }
 693 }
 694
 695 void CephContext::init_crypto()
 696 {
 697   if (!_crypto_inited) {
 698     ceph::crypto::init(this);
 699     _crypto_inited = true;
 700   }
 701 }
 702
 703 void CephContext::start_service_thread()
 704 {
 705   ceph_spin_lock(&_service_thread_lock);
 706   if (_service_thread) {
 707     ceph_spin_unlock(&_service_thread_lock);
 708     return;
 709   }
 710   _service_thread = new CephContextServiceThread(this);
 711   _service_thread->create("service");
 712   ceph_spin_unlock(&_service_thread_lock);
 713
 714   // make logs flush on_exit()
 715   if (_conf->log_flush_on_exit)
 716     _log->set_flush_on_exit();
 717
 718   // Trigger callbacks on any config observers that were waiting for
 719   // it to become safe to start threads.
 720   _conf->set_val("internal_safe_to_start_threads", "true");
 721   _conf->call_all_observers();
 722
 723   // start admin socket
 724   if (_conf->admin_socket.length())
 725     _admin_socket->init(_conf->admin_socket);
 726 }
 727
 728 void CephContext::reopen_logs()
 729 {
 730   ceph_spin_lock(&_service_thread_lock);
 731   if (_service_thread)
 732     _service_thread->reopen_logs();
 733   ceph_spin_unlock(&_service_thread_lock);
 734 }
 735
 736 void CephContext::join_service_thread()
 737 {
 738   ceph_spin_lock(&_service_thread_lock);
 739   CephContextServiceThread *thread = _service_thread;
 740   if (!thread) {
 741     ceph_spin_unlock(&_service_thread_lock);
 742     return;
 743   }
 744   _service_thread = NULL;
 745   ceph_spin_unlock(&_service_thread_lock);
 746
 747   thread->exit_thread();
 748   thread->join();
 749   delete thread;
 750 }
 751
 752 uint32_t CephContext::get_module_type() const
 753 {
 754   return _module_type;
 755 }
 756
 757 void CephContext::set_init_flags(int flags)
 758 {
 759   _init_flags = flags;
 760 }
 761
 762 int CephContext::get_init_flags() const
 763 {
 764   return _init_flags;
 765 }
 766
 767 PerfCountersCollection *CephContext::get_perfcounters_collection()
 768 {
 769   return _perf_counters_collection;
 770 }
 771
 772 void CephContext::enable_perf_counter()
 773 {
 774   PerfCountersBuilder plb(this, "cct", l_cct_first, l_cct_last);
 775   plb.add_u64(l_cct_total_workers, "total_workers", "Total workers");
 776   plb.add_u64(l_cct_unhealthy_workers, "unhealthy_workers", "Unhealthy workers");
 777   PerfCounters *perf_tmp = plb.create_perf_counters();
 778
 779   ceph_spin_lock(&_cct_perf_lock);
 780   assert(_cct_perf == NULL);
 781   _cct_perf = perf_tmp;
 782   ceph_spin_unlock(&_cct_perf_lock);
 783
 784   _perf_counters_collection->add(_cct_perf);
 785 }
 786
 787 void CephContext::disable_perf_counter()
 788 {
 789   _perf_counters_collection->remove(_cct_perf);
 790
 791   ceph_spin_lock(&_cct_perf_lock);
 792   delete _cct_perf;
 793   _cct_perf = NULL;
 794   ceph_spin_unlock(&_cct_perf_lock);
 795 }
 796
 797 void CephContext::refresh_perf_values()
 798 {
 799   ceph_spin_lock(&_cct_perf_lock);
 800   if (_cct_perf) {
 801     _cct_perf->set(l_cct_total_workers, _heartbeat_map->get_total_workers());
 802     _cct_perf->set(l_cct_unhealthy_workers, _heartbeat_map->get_unhealthy_workers());
 803   }
 804   ceph_spin_unlock(&_cct_perf_lock);
 805 }
 806
 807 AdminSocket *CephContext::get_admin_socket()
 808 {
 809   return _admin_socket;
 810 }
 811
 812 CryptoHandler *CephContext::get_crypto_handler(int type)
 813 {
 814   switch (type) {
 815   case CEPH_CRYPTO_NONE:
 816     return _crypto_none;
 817   case CEPH_CRYPTO_AES:
 818     return _crypto_aes;
 819   default:
 820     return NULL;
 821   }
 822 }