projects/stargazer/plugins/other/ping/ping.cpp

   1 #include <cstdio>
   2 #include <cassert>
   3 #include <csignal>
   4 #include <ctime>
   5 #include <algorithm>
   6
   7 #include "stg/user.h"
   8 #include "stg/locker.h"
   9 #include "stg/user_property.h"
  10 #include "stg/plugin_creator.h"
  11 #include "ping.h"
  12
  13 PLUGIN_CREATOR<PING> pc;
  14 //-----------------------------------------------------------------------------
  15 //-----------------------------------------------------------------------------
  16 //-----------------------------------------------------------------------------
  17 PLUGIN * GetPlugin()
  18 {
  19 return pc.GetPlugin();
  20 }
  21 //-----------------------------------------------------------------------------
  22 //-----------------------------------------------------------------------------
  23 //-----------------------------------------------------------------------------
  24 // ëÌÁÓÓ ÄÌÑ ÐÏÉÓËÁ ÀÚÅÒÁ × ÓÐÉÓËÅ ÎÏÔÉÆÉËÁÔÏÒÏ×
  25 template <typename varType>
  26 class IS_CONTAINS_USER: public binary_function<varType, USER_PTR, bool>
  27 {
  28 public:
  29     IS_CONTAINS_USER(const USER_PTR & u) : user(u) {}
  30     bool operator()(varType notifier) const
  31         {
  32         return notifier.GetUser() == user;
  33         };
  34 private:
  35     const USER_PTR & user;
  36 };
  37 //-----------------------------------------------------------------------------
  38 //-----------------------------------------------------------------------------
  39 //-----------------------------------------------------------------------------
  40 int PING_SETTINGS::ParseSettings(const MODULE_SETTINGS & s)
  41 {
  42 PARAM_VALUE pv;
  43 vector<PARAM_VALUE>::const_iterator pvi;
  44
  45 pv.param = "PingDelay";
  46 pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
  47 if (pvi == s.moduleParams.end())
  48     {
  49     errorStr = "Parameter \'PingDelay\' not found.";
  50     printfd(__FILE__, "Parameter 'PingDelay' not found\n");
  51     return -1;
  52     }
  53 if (ParseIntInRange(pvi->value[0], 5, 3600, &pingDelay))
  54     {
  55     errorStr = "Cannot parse parameter \'PingDelay\': " + errorStr;
  56     printfd(__FILE__, "Canot parse parameter 'PingDelay'\n");
  57     return -1;
  58     }
  59
  60 return 0;
  61 }
  62 //-----------------------------------------------------------------------------
  63 PING::PING()
  64     : errorStr(),
  65       pingSettings(),
  66       settings(),
  67       users(NULL),
  68       usersList(),
  69       thread(),
  70       mutex(),
  71       nonstop(false),
  72       isRunning(false),
  73       pinger(),
  74       ChgCurrIPNotifierList(),
  75       ChgIPNotifierList(),
  76       onAddUserNotifier(*this),
  77       onDelUserNotifier(*this),
  78       logger(GetPluginLogger(GetStgLogger(), "ping"))
  79 {
  80 pthread_mutex_init(&mutex, NULL);
  81 }
  82 //-----------------------------------------------------------------------------
  83 PING::~PING()
  84 {
  85 pthread_mutex_destroy(&mutex);
  86 }
  87 //-----------------------------------------------------------------------------
  88 int PING::ParseSettings()
  89 {
  90 int ret = pingSettings.ParseSettings(settings);
  91 if (ret)
  92     errorStr = pingSettings.GetStrError();
  93 return ret;
  94 }
  95 //-----------------------------------------------------------------------------
  96 int PING::Start()
  97 {
  98 GetUsers();
  99
 100 users->AddNotifierUserAdd(&onAddUserNotifier);
 101 users->AddNotifierUserDel(&onDelUserNotifier);
 102
 103 nonstop = true;
 104
 105 pinger.SetDelayTime(pingSettings.GetPingDelay());
 106 pinger.Start();
 107
 108 if (pthread_create(&thread, NULL, Run, this))
 109     {
 110     errorStr = "Cannot start thread.";
 111     printfd(__FILE__, "Cannot start thread\n");
 112     return -1;
 113     }
 114
 115 return 0;
 116 }
 117 //-----------------------------------------------------------------------------
 118 int PING::Stop()
 119 {
 120 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 121
 122 if (!isRunning)
 123     return 0;
 124
 125 pinger.Stop();
 126 nonstop = false;
 127 //5 seconds to thread stops itself
 128 struct timespec ts = {0, 200000000};
 129 for (int i = 0; i < 25; i++)
 130     {
 131     if (!isRunning)
 132         break;
 133
 134     nanosleep(&ts, NULL);
 135     }
 136
 137 users->DelNotifierUserAdd(&onAddUserNotifier);
 138 users->DelNotifierUserDel(&onDelUserNotifier);
 139
 140 list<USER_PTR>::iterator users_iter;
 141 users_iter = usersList.begin();
 142 while (users_iter != usersList.end())
 143     {
 144     UnSetUserNotifiers(*users_iter);
 145     ++users_iter;
 146     }
 147
 148 if (isRunning)
 149     return -1;
 150
 151 return 0;
 152 }
 153 //-----------------------------------------------------------------------------
 154 bool PING::IsRunning()
 155 {
 156 return isRunning;
 157 }
 158 //-----------------------------------------------------------------------------
 159 void * PING::Run(void * d)
 160 {
 161 sigset_t signalSet;
 162 sigfillset(&signalSet);
 163 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
 164
 165 PING * ping = static_cast<PING *>(d);
 166 ping->isRunning = true;
 167
 168 long delay = (10000000 * ping->pingSettings.GetPingDelay()) / 3 + 50000000;
 169
 170 while (ping->nonstop)
 171     {
 172     list<USER_PTR>::iterator iter = ping->usersList.begin();
 173         {
 174         STG_LOCKER lock(&ping->mutex, __FILE__, __LINE__);
 175         while (iter != ping->usersList.end())
 176             {
 177             if ((*iter)->GetProperty().ips.ConstData().OnlyOneIP())
 178                 {
 179                 uint32_t ip = (*iter)->GetProperty().ips.ConstData()[0].ip;
 180                 time_t t;
 181                 if (ping->pinger.GetIPTime(ip, &t) == 0)
 182                     {
 183                     if (t)
 184                         (*iter)->UpdatePingTime(t);
 185                     }
 186                 }
 187             else
 188                 {
 189                 uint32_t ip = (*iter)->GetCurrIP();
 190                 if (ip)
 191                     {
 192                     time_t t;
 193                     if (ping->pinger.GetIPTime(ip, &t) == 0)
 194                         {
 195                         if (t)
 196                             (*iter)->UpdatePingTime(t);
 197                         }
 198                     }
 199                 }
 200             ++iter;
 201             }
 202         }
 203     struct timespec ts = {delay / 1000000000, delay % 1000000000};
 204     for (int i = 0; i < 100; i++)
 205         {
 206         if (ping->nonstop)
 207             {
 208             nanosleep(&ts, NULL);
 209             }
 210         }
 211     }
 212
 213 ping->isRunning = false;
 214 return NULL;
 215 }
 216 //-----------------------------------------------------------------------------
 217 void PING::SetUserNotifiers(USER_PTR u)
 218 {
 219 CHG_CURRIP_NOTIFIER_PING ChgCurrIPNotifier(*this, u);
 220 CHG_IPS_NOTIFIER_PING ChgIPNotifier(*this, u);
 221
 222 ChgCurrIPNotifierList.push_front(ChgCurrIPNotifier);
 223 ChgIPNotifierList.push_front(ChgIPNotifier);
 224
 225 u->AddCurrIPAfterNotifier(&(*ChgCurrIPNotifierList.begin()));
 226 u->GetProperty().ips.AddAfterNotifier(&(*ChgIPNotifierList.begin()));
 227 }
 228 //-----------------------------------------------------------------------------
 229 void PING::UnSetUserNotifiers(USER_PTR u)
 230 {
 231 // ---          CurrIP              ---
 232 IS_CONTAINS_USER<CHG_CURRIP_NOTIFIER_PING> IsContainsUserCurrIP(u);
 233 IS_CONTAINS_USER<CHG_IPS_NOTIFIER_PING> IsContainsUserIP(u);
 234
 235 list<CHG_CURRIP_NOTIFIER_PING>::iterator currIPter;
 236 list<CHG_IPS_NOTIFIER_PING>::iterator IPIter;
 237
 238 currIPter = find_if(ChgCurrIPNotifierList.begin(),
 239                     ChgCurrIPNotifierList.end(),
 240                     IsContainsUserCurrIP);
 241
 242 if (currIPter != ChgCurrIPNotifierList.end())
 243     {
 244     currIPter->GetUser()->DelCurrIPAfterNotifier(&(*currIPter));
 245     ChgCurrIPNotifierList.erase(currIPter);
 246     }
 247 // ---         CurrIP end          ---
 248
 249 // ---          IP              ---
 250 IPIter = find_if(ChgIPNotifierList.begin(),
 251                  ChgIPNotifierList.end(),
 252                  IsContainsUserIP);
 253
 254 if (IPIter != ChgIPNotifierList.end())
 255     {
 256     IPIter->GetUser()->GetProperty().ips.DelAfterNotifier(&(*IPIter));
 257     ChgIPNotifierList.erase(IPIter);
 258     }
 259 // ---          IP end          ---
 260 }
 261 //-----------------------------------------------------------------------------
 262 void PING::GetUsers()
 263 {
 264 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 265
 266 USER_PTR u;
 267 int h = users->OpenSearch();
 268 assert(h && "USERS::OpenSearch is always correct");
 269
 270 while (users->SearchNext(h, &u) == 0)
 271     {
 272     usersList.push_back(u);
 273     SetUserNotifiers(u);
 274     if (u->GetProperty().ips.ConstData().OnlyOneIP())
 275         {
 276         pinger.AddIP(u->GetProperty().ips.ConstData()[0].ip);
 277         }
 278     else
 279         {
 280         uint32_t ip = u->GetCurrIP();
 281         if (ip)
 282             {
 283             pinger.AddIP(ip);
 284             }
 285         }
 286     }
 287
 288 users->CloseSearch(h);
 289 }
 290 //-----------------------------------------------------------------------------
 291 void PING::AddUser(USER_PTR u)
 292 {
 293 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 294
 295 SetUserNotifiers(u);
 296 usersList.push_back(u);
 297 }
 298 //-----------------------------------------------------------------------------
 299 void PING::DelUser(USER_PTR u)
 300 {
 301 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 302
 303 UnSetUserNotifiers(u);
 304
 305 list<USER_PTR>::iterator users_iter;
 306 users_iter = usersList.begin();
 307
 308 while (users_iter != usersList.end())
 309     {
 310     if (u == *users_iter)
 311         {
 312         usersList.erase(users_iter);
 313         break;
 314         }
 315     ++users_iter;
 316     }
 317 }
 318 //-----------------------------------------------------------------------------
 319 void CHG_CURRIP_NOTIFIER_PING::Notify(const uint32_t & oldIP, const uint32_t & newIP)
 320 {
 321 ping.pinger.DelIP(oldIP);
 322 if (newIP)
 323     {
 324     ping.pinger.AddIP(newIP);
 325     }
 326 }
 327 //-----------------------------------------------------------------------------
 328 void CHG_IPS_NOTIFIER_PING::Notify(const USER_IPS & oldIPS, const USER_IPS & newIPS)
 329 {
 330 if (oldIPS.OnlyOneIP())
 331     {
 332     ping.pinger.DelIP(oldIPS[0].ip);
 333     }
 334
 335 if (newIPS.OnlyOneIP())
 336     {
 337     ping.pinger.AddIP(newIPS[0].ip);
 338     }
 339 }
 340 //-----------------------------------------------------------------------------
 341 void ADD_USER_NONIFIER_PING::Notify(const USER_PTR & user)
 342 {
 343 ping.AddUser(user);
 344 }
 345 //-----------------------------------------------------------------------------
 346 void DEL_USER_NONIFIER_PING::Notify(const USER_PTR & user)
 347 {
 348 ping.DelUser(user);
 349 }
 350 //-----------------------------------------------------------------------------