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# ApMon.cpp

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    00001
    00006 /*
    00007  * ApMon - Application Monitoring Tool
    00008  * Version: 2.2.0
    00009  *
    00010  * Copyright (C) 2006 California Institute of Technology
    00011  *
    00012  * Permission is hereby granted, free of charge, to use, copy and modify
    00013  * this software and its documentation (the "Software") for any
    00014  * purpose, provided that existing copyright notices are retained in
    00015  * all copies and that this notice is included verbatim in any distributions
    00016  * or substantial portions of the Software.
    00017  * This software is a part of the MonALISA framework (http://monalisa.cacr.caltech.edu).
    00018  * Users of the Software are asked to feed back problems, benefits,
    00019  * and/or suggestions about the software to the MonALISA Development Team
    00020  * (developers@monalisa.cern.ch). Support for this software - fixing of bugs,
    00021  * incorporation of new features - is done on a best effort basis. All bug
    00022  * fixes and enhancements will be made available under the same terms and
    00023  * conditions as the original software,
    00024
    00025  * IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR
    00026  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
    00027  * OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF,
    00028  * EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00029
    00030  * THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
    00031  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
    00032  * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE IS
    00033  * PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO
    00034  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
    00035  * MODIFICATIONS.
    00036  */
    00037
    00038 #include "ApMon.h"
    00039 #include "utils.h"
    00040 #include "proc_utils.h"
    00041 #include "monitor_utils.h"
    00042
    00043 #include <math.h>
    00044
    00045 using namespace apmon_utils;
    00046 using namespace apmon_mon_utils;
    00047
    00048 #define RECHECK_CONF 0
    00049 #define SYS_INFO_SEND 1
    00050 #define JOB_INFO_SEND 2
    00051
    00052 char boolStrings[][10] = {"false", "true"};
    00053
    00054 //========= Implementations of the functions ===================
    00055
    00056 ApMon::ApMon(char *initsource)
    00057   throw(runtime_error) {
    00058
    00059   if (initsource == NULL)
    00060     throw runtime_error("[ ApMon() ]  No conf file/URL provided");
    00061
    00062   if (strstr(initsource, "http://") == initsource) {
    00063     char *destList[1];
    00064     destList[0] = initsource;
    00065     constructFromList(1, destList);
    00066   } else {
    00067     nInitSources = 1;
    00068     initType = FILE_INIT;
    00069     initSources = (char **)malloc(nInitSources * sizeof(char *));
    00070     if (initSources == NULL)
    00071       throw runtime_error("[ ApMon() ] Error allocating memory.");
    00072
    00073     initSources[0] = strdup(initsource);
    00074     initMonitoring();
    00075
    00076     initialize(initsource, true);
    00077   }
    00078 }
    00079
    00080 void ApMon::initialize(char *filename, bool firstTime)
    00081   throw(runtime_error) {
    00082
    00083   char *destAddresses[MAX_N_DESTINATIONS];
    00084   int destPorts[MAX_N_DESTINATIONS];
    00085   char *destPasswds[MAX_N_DESTINATIONS];
    00086   int nDest = 0, i;
    00087   ConfURLs confURLs;
    00088
    00089   confURLs.nConfURLs = 0;
    00090
    00091   try {
    00092     loadFile(filename, &nDest, destAddresses, destPorts, destPasswds);
    00093
    00094     arrayInit(nDest, destAddresses, destPorts, destPasswds, firstTime);
    00095   } catch (runtime_error& err) {
    00096     if (firstTime)
    00097       throw err;
    00098     else {
    00099       logger(WARNING, err.what());
    00100       logger(WARNING, "Error reloading the configuration. Keeping the previous one.");
    00101       return;
    00102     }
    00103   }
    00104
    00105   for (i = 0; i < nDest; i++) {
    00106     free(destAddresses[i]);
    00107     free(destPasswds[i]);
    00108   }
    00109
    00110   pthread_mutex_lock(&mutex);
    00111   this -> confURLs = confURLs;
    00112   pthread_mutex_unlock(&mutex);
    00113 }
    00114
    00115 void ApMon::loadFile(char *filename, int *nDestinations, char **destAddresses,
    00116                      int *destPorts, char **destPasswds)
    00117   throw(runtime_error) {
    00118   FILE *f;
    00119   char msg[100];
    00120
    00121   /* initializations for the destination addresses */
    00122   f = fopen(filename, "rt");
    00123   if (f == NULL) {
    00124     throw runtime_error("[ loadFile() ] Error opening configuration file");
    00125   }
    00126
    00127   sprintf(msg, "Loading file %s ...", filename);
    00128   logger(INFO, msg);
    00129
    00130   lastModifFile = time(NULL);
    00131
    00132   parseConf(f, nDestinations, destAddresses, destPorts,
    00133             destPasswds);
    00134   fclose(f);
    00135 }
    00136
    00137 ApMon::ApMon(int nDestinations, char **destinationsList) throw(runtime_error){
    00138   constructFromList(nDestinations, destinationsList);
    00139 }
    00140
    00141 void ApMon::constructFromList(int nDestinations, char **destinationsList)
    00142   throw(runtime_error) {
    00143   int i;
    00144
    00145   if (destinationsList == NULL)
    00146     throw runtime_error("[ constructFromList() ] Null destination list");
    00147
    00148 #ifdef __APPLE__
    00149   initType = OLIST_INIT;
    00150 #else
    00151   initType = LIST_INIT;
    00152 #endif
    00153
    00154   initMonitoring();
    00155
    00156   /* save the initialization list */
    00157   nInitSources = nDestinations;
    00158   initSources = (char **)malloc(nInitSources * sizeof(char*));
    00159   if (initSources == NULL)
    00160     throw runtime_error("[ ApMon() ] Error allocating memory.");
    00161
    00162   for (i = 0; i < nInitSources; i++)
    00163     initSources[i] = strdup(destinationsList[i]);
    00164
    00165   initialize(nDestinations, destinationsList, true);
    00166 }
    00167
    00168 void ApMon::initialize(int nDestinations, char **destinationsList,
    00169                        bool firstTime) throw(runtime_error) {
    00170   char *destAddresses[MAX_N_DESTINATIONS];
    00171   int destPorts[MAX_N_DESTINATIONS];
    00172   char *destPasswds[MAX_N_DESTINATIONS];
    00173   char errmsg[200];
    00174   int i;
    00175   int cnt = 0;
    00176   ConfURLs confURLs;
    00177
    00178   logger(INFO, "Initializing destination addresses & ports:");
    00179
    00180   if (nDestinations > MAX_N_DESTINATIONS)
    00181     throw runtime_error("[ initialize() ] Maximum number of destinations exceeded");
    00182
    00183
    00184   confURLs.nConfURLs = 0;
    00185
    00186   for (i = 0; i < nDestinations; i++) {
    00187     try {
    00188       if (strstr(destinationsList[i], "http") == destinationsList[i])
    00189         getDestFromWeb(destinationsList[i], &cnt,
    00190                        destAddresses, destPorts, destPasswds, confURLs);
    00191       else
    00192         addToDestinations(destinationsList[i], &cnt,
    00193                         destAddresses, destPorts, destPasswds);
    00194
    00195     } catch (runtime_error &e) {
    00196       sprintf(errmsg, "[ initialize() ] Error while loading the configuration: %s", e.what());
    00197       logger(WARNING, errmsg);
    00198       if (!firstTime) {
    00199         for (i = 0; i < cnt; i++) {
    00200           free(destAddresses[i]);
    00201           free(destPasswds[i]);
    00202         }
    00203         logger(WARNING, "Configuration not reloaded successfully. Keeping the previous one.");
    00204         return;
    00205       }
    00206     }  // catch
    00207   }  // for
    00208
    00209   try {
    00210     arrayInit(cnt, destAddresses, destPorts, destPasswds, firstTime);
    00211   } catch (runtime_error& err) {
    00212     if (firstTime)
    00213       throw err;
    00214     else {
    00215       logger(WARNING, "Error reloading the configuration. Keeping the previous one.");
    00216       return;
    00217     }
    00218   }
    00219
    00220   for (i = 0; i < cnt; i++) {
    00221     free(destAddresses[i]);
    00222     free(destPasswds[i]);
    00223   }
    00224
    00225   pthread_mutex_lock(&mutex);
    00226   this -> confURLs = confURLs;
    00227   pthread_mutex_unlock(&mutex);
    00228 }
    00229
    00230 void ApMon::addToDestinations(char *line, int *nDestinations,
    00231                char *destAddresses[], int destPorts[], char *destPasswds[]) {
    00232   char *addr, *port, *passwd;
    00233   const char *sep1 = " \t";
    00234   const char *sep2 = ":";
    00235
    00236   char *tmp = strdup(line);
    00237   char *firstToken;
    00238 //  char buf[MAX_STRING_LEN];
    00239 //  char *pbuf = buf;
    00240
    00241   /* the address & port are separated from the password with spaces */
    00242   firstToken = strtok/*_r*/(tmp, sep1);//, &pbuf);
    00243   passwd = strtok/*_r*/(NULL, sep1);//, &pbuf);
    00244
    00245   /* the address and the port are separated with ":" */
    00246   addr = strtok/*_r*/(firstToken, sep2);//, &pbuf);
    00247   port = strtok/*_r*/(NULL, sep2);//, &pbuf);
    00248   destAddresses[*nDestinations] = strdup(addr);
    00249   if (port == NULL)
    00250     destPorts[*nDestinations] = DEFAULT_PORT;
    00251   else
    00252     destPorts[*nDestinations] = atoi(port);
    00253   if (passwd == NULL)
    00254     destPasswds[*nDestinations] = strdup("");
    00255   else
    00256     destPasswds[*nDestinations] = strdup(passwd);
    00257   (*nDestinations)++;
    00258
    00259   free(tmp);
    00260 }
    00261
    00262 void ApMon::getDestFromWeb(char *url, int *nDestinations,
    00263   char *destAddresses[], int destPorts[], char *destPasswds[],
    00264                            ConfURLs& confURLs) throw(runtime_error) {
    00265   char temp_filename[300];
    00266   FILE *tmp_file;
    00267   char *line, *ret, *tmp = NULL;
    00268   bool modifLineFound;
    00269   long mypid = getpid();
    00270   char str1[20], str2[20];
    00271   int totalSize, headerSize, contentSize;
    00272
    00273 #ifndef WIN32
    00274   sprintf(temp_filename, "/tmp/apmon_webconf%ld", mypid);
    00275 #else
    00276   char *tmpp = getenv("TEMP");
    00277   if(tmpp == NULL)
    00278           tmpp = getenv("TMP");
    00279   if(tmpp == NULL)
    00280           tmpp = "c:";
    00281   sprintf(temp_filename, "%s\\apmon_webconf%ld", tmpp, mypid);
    00282 #endif
    00283   /* get the configuration file from web and put it in a temporary file */
    00284   totalSize = httpRequest(url, (char*)"GET", temp_filename);
    00285
    00286   /* read the configuration from the temporary file */
    00287   tmp_file = fopen(temp_filename, "rt");
    00288   if (tmp_file == NULL)
    00289     throw runtime_error("[ getDestFromWeb() ] Error getting the configuration web page");
    00290
    00291   line = (char*)malloc((MAX_STRING_LEN + 1) * sizeof(char));
    00292
    00293   //check the HTTP header to see if we got the page correctly
    00294   fgets(line, MAX_STRING_LEN, tmp_file);
    00295   sscanf(line, "%s %s", str1, str2);
    00296   if (atoi(str2) != 200) {
    00297     free(line);
    00298     fclose(tmp_file);
    00299     throw runtime_error("[ getDestFromWeb() ] The web page does not exist on the server");
    00300   }
    00301
    00302   confURLs.vURLs[confURLs.nConfURLs] = strdup(url);
    00303
    00304   // check the  header for the "Last-Modified" and "Content-Length" lines
    00305   modifLineFound = false;
    00306   contentSize = 0;
    00307   do {
    00308     if (tmp != NULL)
    00309       free(tmp);
    00310     ret = fgets(line, MAX_STRING_LEN, tmp_file);
    00311     if (ret == NULL) {
    00312       free(line); fclose(tmp_file);
    00313       throw runtime_error("[ getDestFromWeb() ] Error getting the configuration web page");
    00314     }
    00315     if (strstr(line, "Last-Modified") == line) {
    00316       modifLineFound = true;
    00317       confURLs.lastModifURLs[confURLs.nConfURLs] = strdup(line);
    00318     }
    00319
    00320     if (strstr(line, "Content-Length") == line) {
    00321       sscanf(line, "%s %d", str1, &contentSize);
    00322     }
    00323
    00324     tmp = trimString(line);
    00325   } while (strlen(tmp) != 0);
    00326   free(tmp); free(line);
    00327
    00328   if (!modifLineFound)
    00329     confURLs.lastModifURLs[confURLs.nConfURLs] = strdup("");
    00330   confURLs.nConfURLs++;
    00331
    00332   headerSize = ftell(tmp_file);
    00333   if (totalSize - headerSize < contentSize) {
    00334     fclose(tmp_file);
    00335     throw runtime_error("[ getDestFromWeb() ] Web page received incompletely");
    00336   }
    00337
    00338   try {
    00339     parseConf(tmp_file, nDestinations, destAddresses, destPorts,
    00340               destPasswds);
    00341   } catch (...) {
    00342     fclose(tmp_file);
    00343     unlink(temp_filename);
    00344     throw;
    00345   }
    00346
    00347   fclose(tmp_file);
    00348   unlink(temp_filename);
    00349 }
    00350
    00351
    00352 ApMon::ApMon(int nDestinations, char **destAddresses, int *destPorts,
    00353              char **destPasswds)
    00354 throw(runtime_error) {
    00355   initMonitoring();
    00356
    00357   arrayInit(nDestinations, destAddresses, destPorts, destPasswds);
    00358 }
    00359
    00360 void ApMon::arrayInit(int nDestinations, char **destAddresses,
    00361                       int *destPorts, char **destPasswds)
    00362   throw(runtime_error) {
    00363         arrayInit(nDestinations, destAddresses, destPorts, destPasswds, true);
    00364 }
    00365
    00366
    00367 void ApMon::arrayInit(int nDestinations, char **destAddresses, int *destPorts,
    00368                       char **destPasswds, bool firstTime)
    00369 throw(runtime_error) {
    00370   int i, j;
    00371   int ret;
    00372   char *ipAddr, logmsg[100];
    00373   bool found, havePublicIP;
    00374   int tmpNDestinations;
    00375   char **tmpAddresses, **tmpPasswds;
    00376   int *tmpPorts;
    00377
    00378   if (destAddresses == NULL || destPorts == NULL || nDestinations == 0)
    00379     throw runtime_error("[ arrayInit() ] Destination addresses or ports not provided");
    00380
    00381   /* initializations that we have to do only once */
    00382   if (firstTime) {
    00383     //this -> appPID = getpid();
    00384
    00385     this -> nMonJobs = 0;
    00386     this -> monJobs = (MonitoredJob *)malloc(MAX_MONITORED_JOBS *
    00387                                             sizeof(MonitoredJob));
    00388
    00389     try {
    00390       this -> numCPUs = ProcUtils::getNumCPUs();
    00391     } catch (procutils_error &err) {
    00392       logger(WARNING, err.what());
    00393       this -> numCPUs = 0;
    00394     }
    00395
    00396     /* get the names of the network interfaces */
    00397     this -> nInterfaces = 0;
    00398     try {
    00399       ProcUtils::getNetworkInterfaces(this -> nInterfaces,
    00400                                      this -> interfaceNames);
    00401     } catch (procutils_error &err) {
    00402       logger(WARNING, err.what());
    00403       this -> nInterfaces = 0;
    00404     }
    00405
    00406     /* get the hostname of the machine */
    00407     ret = gethostname(this -> myHostname, MAX_STRING_LEN -1);
    00408     if (ret < 0) {
    00409       logger(WARNING, "Could not obtain the local hostname");
    00410       strcpy(myHostname, "unknown");
    00411     } else
    00412       myHostname[MAX_STRING_LEN - 1] = 0;
    00413
    00414     /* get the IPs of the machine */
    00415     this -> numIPs = 0; havePublicIP = false;
    00416     strcpy(this -> myIP, "unknown");
    00417
    00418     /* default values for cluster name and node name */
    00419     this -> clusterName = strdup("ApMon_UserSend");
    00420     this -> nodeName = strdup(myHostname);
    00421
    00422 #ifndef WIN32
    00423     int sockd = socket(PF_INET, SOCK_STREAM, 0);
    00424     if(sockd < 0){
    00425       logger(WARNING, "Could not obtain local IP addresses");
    00426     } else {
    00427       for (i = 0; i < this -> nInterfaces; i++) {
    00428     struct ifreq ifr;
    00429         memset(&ifr, 0, sizeof(ifr));
    00430         strncpy(ifr.ifr_name, this -> interfaceNames[i], sizeof(ifr.ifr_name) - 1);
    00431         if(ioctl(sockd, SIOCGIFADDR, &ifr)<0)
    00432           continue;     //????????
    00433         char ip[4], tmp_s[20];
    00434 #ifdef __APPLE__
    00435         memcpy(ip, ifr.ifr_addr.sa_data+2, 4);
    00436 #else
    00437         memcpy(ip, ifr.ifr_hwaddr.sa_data+2, 4);
    00438 #endif
    00439         strcpy(tmp_s, inet_ntoa(*(struct in_addr *)ip));
    00440         sprintf(logmsg, "Found local IP address: %s", tmp_s);
    00441         logger(FINE, logmsg);
    00442         if (strcmp(tmp_s, "127.0.0.1") != 0 && !havePublicIP) {
    00443           strcpy(this -> myIP, tmp_s);
    00444           if (!isPrivateAddress(tmp_s))
    00445             havePublicIP = true;
    00446         }
    00447         strcpy(this -> allMyIPs[this -> numIPs], tmp_s);
    00448         this -> numIPs++;
    00449       }
    00450     }
    00451 #else
    00452         struct hostent *hptr;
    00453     if ((hptr = gethostbyname(myHostname))!= NULL) {
    00454       i = 0;
    00455           struct in_addr addr;
    00456           while ((hptr -> h_addr_list)[i] != NULL) {
    00457             memcpy(&(addr.s_addr), (hptr -> h_addr_list)[i], 4);
    00458         ipAddr = inet_ntoa(addr);
    00459             if (strcmp(ipAddr, "127.0.0.1") != 0) {
    00460               strcpy(this -> myIP, ipAddr);
    00461               if (!isPrivateAddress(ipAddr))
    00462                     break;
    00463                 }
    00464             i++;
    00465           }
    00466         }
    00467 #endif
    00468
    00469     this -> sysMonCluster = strdup("ApMon_SysMon");
    00470     this -> sysMonNode = strdup(this -> myIP);
    00471
    00472     this -> prvTime = 0;
    00473     this -> prvSent = 0;
    00474     this -> prvDrop = 0;
    00475     this -> crtTime = 0;
    00476     this -> crtSent = 0;
    00477     this -> crtDrop = 0;
    00478     this -> hWeight = exp(-5.0/60.0);
    00479
    00480     srand(time(NULL));
    00481
    00482     /* initialize buffer for XDR encoding */
    00483     this -> buf = (char *)malloc(MAX_DGRAM_SIZE);
    00484     if (this -> buf == NULL)
    00485       throw runtime_error("[ arrayInit() ] Error allocating memory");
    00486     this -> dgramSize = 0;
    00487
    00488     /*create the socket & set options*/
    00489     initSocket();
    00490
    00491     /* initialize the sender ID and the sequence number */
    00492     instance_id = rand();
    00493     seq_nr = 0;
    00494   }
    00495
    00496   /* put the destination addresses, ports & passwords in some temporary
    00497      buffers (because we don't want to lock mutex while making DNS
    00498      requests)
    00499   */
    00500   tmpNDestinations = 0;
    00501   tmpPorts = (int *)malloc(nDestinations * sizeof(int));
    00502   tmpAddresses = (char **)malloc(nDestinations * sizeof(char *));
    00503   tmpPasswds = (char **)malloc(nDestinations * sizeof(char *));
    00504   if (tmpPorts == NULL || tmpAddresses == NULL ||
    00505       tmpPasswds == NULL)
    00506     throw runtime_error("[ arrayInit() ] Error allocating memory");
    00507
    00508   for (i = 0; i < nDestinations; i++) {
    00509     try {
    00510       ipAddr = findIP(destAddresses[i]);
    00511     } catch (runtime_error &err) {
    00512       logger(FATAL, err.what());
    00513       continue;
    00514     }
    00515
    00516     /* make sure this address is not already in the list */
    00517     found = false;
    00518     for (j = 0; j < tmpNDestinations; j++) {
    00519       if (!strcmp(ipAddr, tmpAddresses[j])) {
    00520         found = true;
    00521         break;
    00522       }
    00523     }
    00524
    00525     /* add the address to the list */
    00526     if (!found) {
    00527       tmpAddresses[tmpNDestinations] = ipAddr;
    00528       tmpPorts[tmpNDestinations] = destPorts[i];
    00529       tmpPasswds[tmpNDestinations] = strdup(destPasswds[i]);
    00530
    00531       sprintf(logmsg, "Adding destination host: %s  - port %d",
    00532              tmpAddresses[tmpNDestinations], tmpPorts[tmpNDestinations]);
    00533       logger(INFO, logmsg);
    00534
    00535       tmpNDestinations++;
    00536     }
    00537   }
    00538
    00539   if (tmpNDestinations == 0) {
    00540     freeMat(tmpAddresses, tmpNDestinations);
    00541     freeMat(tmpPasswds, tmpNDestinations);
    00542     throw runtime_error("[ arrayInit() ] There is no destination host specified correctly!");
    00543   }
    00544
    00545   pthread_mutex_lock(&mutex);
    00546   if (!firstTime)
    00547       freeConf();
    00548   this -> nDestinations = tmpNDestinations;
    00549   this -> destAddresses = tmpAddresses;
    00550   this -> destPorts = tmpPorts;
    00551   this -> destPasswds = tmpPasswds;
    00552   pthread_mutex_unlock(&mutex);
    00553
    00554   /* start job/system monitoring according to the settings previously read
    00555      from the configuration file */
    00556   setJobMonitoring(jobMonitoring, jobMonitorInterval);
    00557   setSysMonitoring(sysMonitoring, sysMonitorInterval);
    00558   setGenMonitoring(genMonitoring, genMonitorIntervals);
    00559   setConfRecheck(confCheck, recheckInterval);
    00560 }
    00561
    00562
    00563 ApMon::~ApMon() {
    00564   int i;
    00565
    00566   if (bkThreadStarted) {
    00567     if (getJobMonitoring()) {
    00568       /* send a datagram with job monitoring information which covers
    00569          the last time interval */
    00570       sendJobInfo();
    00571     }
    00572   }
    00573
    00574   pthread_mutex_lock(&mutexBack);
    00575   setBackgroundThread(false);
    00576   pthread_mutex_unlock(&mutexBack);
    00577
    00578   pthread_mutex_destroy(&mutex);
    00579   pthread_mutex_destroy(&mutexBack);
    00580   pthread_mutex_destroy(&mutexCond);
    00581   pthread_cond_destroy(&confChangedCond);
    00582
    00583   free(clusterName);
    00584   free(nodeName);
    00585   free(sysMonCluster); free(sysMonNode);
    00586
    00587   freeConf();
    00588
    00589   free(monJobs);
    00590   for (i = 0; i < nInitSources; i++) {
    00591     free(initSources[i]);
    00592   }
    00593   free(initSources);
    00594
    00595   free(buf);
    00596 #ifndef WIN32
    00597   close(sockfd);
    00598 #else
    00599   closesocket(sockfd);
    00600   WSACleanup();
    00601 #endif
    00602 }
    00603
    00604 void ApMon::freeConf() {
    00605   int i;
    00606   freeMat(destAddresses, nDestinations);
    00607   freeMat(destPasswds, nDestinations);
    00608   free(destPorts);
    00609
    00610   for (i = 0; i < confURLs.nConfURLs; i++) {
    00611       free(confURLs.vURLs[i]);
    00612       free(confURLs.lastModifURLs[i]);
    00613   }
    00614 }
    00615
    00616 int ApMon::sendParameters(char *clusterName, char *nodeName,
    00617                int nParams, char **paramNames, int *valueTypes,
    00618                          char **paramValues) throw(runtime_error){
    00619  return sendTimedParameters(clusterName, nodeName, nParams,
    00620                             paramNames, valueTypes, paramValues, -1);
    00621 }
    00622
    00623 int ApMon::sendTimedParameters(char *clusterName, char *nodeName,
    00624                int nParams, char **paramNames, int *valueTypes,
    00625                char **paramValues, int timestamp) throw(runtime_error){
    00626   int i;
    00627   int ret, ret1, ret2;
    00628   char msg[100], buf2[MAX_HEADER_LENGTH+4], newBuf[MAX_DGRAM_SIZE];
    00629 #ifdef WIN32
    00630   char crtAddr[20];
    00631 #endif
    00632   char *headerTmp;
    00633   char header[MAX_HEADER_LENGTH] = "v:";
    00634   strcat(header, APMON_VERSION);
    00635   strcat(header, "_cpp"); // to indicate this is the C++ version
    00636   strcat(header, "p:");
    00637
    00638   pthread_mutex_lock(&mutex);
    00639
    00640   if(!shouldSend()) {
    00641      pthread_mutex_unlock(&mutex);
    00642      return RET_NOT_SENT;
    00643   }
    00644
    00645   if (clusterName != NULL) { // don't keep the cached values for cluster name
    00646     // and node name
    00647     free(this -> clusterName);
    00648     this -> clusterName = strdup(clusterName);
    00649
    00650     if (nodeName != NULL) {  /* the user provided a name */
    00651       free(this -> nodeName);
    00652       this -> nodeName = strdup(nodeName);
    00653     }
    00654     else { /* set the node name to the node's IP */
    00655       free(this -> nodeName);
    00656       this -> nodeName = strdup(this -> myHostname);
    00657     }  // else
    00658   } // if
    00659
    00660   if (this -> clusterName == NULL || this -> nodeName == NULL) {
    00661     pthread_mutex_unlock(&mutex);
    00662     throw runtime_error("[ sendTimedParameters() ] Null cluster name or node name");
    00663   }
    00664
    00665   //sortParams(nParams, paramNames, valueTypes, paramValues);
    00666
    00667   /* try to encode the parameters */
    00668   try {
    00669     encodeParams(nParams, paramNames, valueTypes, paramValues, timestamp);
    00670   } catch (runtime_error& err) {
    00671     pthread_mutex_unlock(&mutex);
    00672     throw err;
    00673   }
    00674
    00675   headerTmp = (char *)malloc(MAX_HEADER_LENGTH * sizeof(char));
    00676   /* for each destination */
    00677   for (i = 0; i < nDestinations; i++) {
    00678     XDR xdrs;
    00679     struct sockaddr_in destAddr;
    00680
    00681     /* initialize the destination address */
    00682     memset(&destAddr, 0, sizeof(destAddr));
    00683     destAddr.sin_family = AF_INET;
    00684     destAddr.sin_port = htons(destPorts[i]);
    00685 #ifndef WIN32
    00686     inet_pton(AF_INET, destAddresses[i], &destAddr.sin_addr);
    00687 #else
    00688     int dummy = sizeof(destAddr);
    00689     sprintf(crtAddr, "%s:%d", destAddresses[i], destPorts[i]);
    00690     ret = WSAStringToAddress(crtAddr, AF_INET, NULL, (struct sockaddr *) &destAddr, &dummy);
    00691     if(ret){
    00692       ret = WSAGetLastError();
    00693       sprintf(msg, "[ sendTimedParameters() ] Error packing address %s, code %d ", crtAddr, ret);
    00694       throw runtime_error(msg);
    00695     }
    00696 #endif
    00697     /* add the header (which is different for each destination) */
    00698
    00699     strcpy(headerTmp, header);
    00700     strcat(headerTmp, destPasswds[i]);
    00701
    00702     /* initialize the XDR stream to encode the header */
    00703     xdrmem_create(&xdrs, buf2, MAX_HEADER_LENGTH, XDR_ENCODE);
    00704
    00705     /* encode the header */
    00706     ret = xdr_string(&xdrs, &(headerTmp), strlen(headerTmp) + 1);
    00707     /* add the instance ID and the sequence number */
    00708     ret1 = xdr_int(&xdrs, &(instance_id));
    00709     ret2 = xdr_int(&xdrs, &(seq_nr));
    00710
    00711     if (!ret || !ret1 || !ret2) {
    00712       free(headerTmp);
    00713           pthread_mutex_unlock(&mutex);
    00714       throw runtime_error("[ sendTimedParameters() ] XDR encoding error for the header");
    00715     }
    00716
    00717     /* concatenate the header and the rest of the datagram */
    00718     int buf2Length = xdrSize(XDR_STRING, headerTmp) + 2 * xdrSize(XDR_INT32, NULL);
    00719     memcpy(newBuf, buf2, buf2Length);
    00720     memcpy(newBuf + buf2Length, buf, dgramSize);
    00721
    00722     /* send the buffer */
    00723     ret = sendto(sockfd, newBuf, dgramSize + buf2Length, 0,
    00724                  (struct sockaddr *)&destAddr, sizeof(destAddr));
    00725     if (ret == RET_ERROR) {
    00726       free(headerTmp);
    00727       pthread_mutex_unlock(&mutex);
    00728
    00729       /*re-initialize the socket */
    00730 #ifndef WIN32
    00731       close(sockfd);
    00732 #else
    00733       closesocket(sockfd);
    00734 #endif
    00735       initSocket();
    00736
    00737       /* throw exception because the datagram was not sent */
    00738       sprintf(msg, "[ sendTimedParameters() ] Error sending data to destination %s ",
    00739               destAddresses[i]);
    00740       throw runtime_error(msg);
    00741     }
    00742     else {
    00743       sprintf(msg, "Datagram with size %d, instance id %d, sequence number %d, sent to %s, containing parameters:",
    00744              ret, instance_id, seq_nr, destAddresses[i]);
    00745       logger(FINE, msg);
    00746       logParameters(FINE, nParams, paramNames, valueTypes, paramValues);
    00747     }
    00748     xdr_destroy(&xdrs);
    00749
    00750   }
    00751
    00752   seq_nr = (seq_nr + 1) % TWO_BILLION;
    00753   free(headerTmp);
    00754   pthread_mutex_unlock(&mutex);
    00755   return RET_SUCCESS;
    00756 }
    00757
    00758
    00759 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00760                         char *paramName, int valueType, char *paramValue)
    00761  throw(runtime_error){
    00762
    00763   return sendParameters(clusterName, nodeName, 1, &paramName,
    00764                               &valueType, &paramValue);
    00765 }
    00766
    00767 int ApMon::sendTimedParameter(char *clusterName, char *nodeName,
    00768               char *paramName, int valueType, char *paramValue, int timestamp)
    00769  throw(runtime_error){
    00770
    00771   return sendTimedParameters(clusterName, nodeName, 1, &paramName,
    00772                               &valueType, &paramValue, timestamp);
    00773 }
    00774
    00775 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00776                 char *paramName, int paramValue) throw(runtime_error) {
    00777
    00778   return sendParameter(clusterName, nodeName, paramName, XDR_INT32,
    00779                     (char *)&paramValue);
    00780 }
    00781
    00782 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00783                 char *paramName, float paramValue) throw(runtime_error) {
    00784
    00785   return sendParameter(clusterName, nodeName, paramName, XDR_REAL32,
    00786                     (char *)&paramValue);
    00787 }
    00788
    00789 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00790                 char *paramName, double paramValue) throw(runtime_error) {
    00791
    00792   return sendParameter(clusterName, nodeName, paramName, XDR_REAL64,
    00793                     (char *)&paramValue);
    00794 }
    00795
    00796 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00797                 char *paramName, char *paramValue) throw(runtime_error) {
    00798
    00799   return sendParameter(clusterName, nodeName, paramName, XDR_STRING,
    00800                     paramValue);
    00801 }
    00802
    00803 void ApMon::encodeParams(int nParams, char **paramNames, int *valueTypes,
    00804                         char **paramValues, int timestamp)
    00805   throw(runtime_error){
    00806   XDR xdrs; /* XDR handle. */
    00807   int i, effectiveNParams;
    00808
    00809   /* count the number of parameters actually sent in the datagram
    00810      (the parameters with a NULL name and the string parameters
    00811      with a NULL value are skipped)
    00812   */
    00813   effectiveNParams = nParams;
    00814   for (i = 0; i < nParams; i++) {
    00815       if (paramNames[i] == NULL || (valueTypes[i] == XDR_STRING &&
    00816                                     paramValues[i] == NULL)) {
    00817         effectiveNParams--;
    00818       }
    00819   }
    00820   if (effectiveNParams == 0)
    00821       throw runtime_error("[ encodeParams() ] No valid parameters in datagram, sending aborted");
    00822
    00823   /*** estimate the length of the send buffer ***/
    00824
    00825   /* add the length of the cluster name & node name */
    00826   dgramSize =  xdrSize(XDR_STRING, clusterName) +
    00827       xdrSize(XDR_STRING, nodeName) + xdrSize(XDR_INT32, NULL);
    00828   /* add the lengths for the parameters (name + size + value) */
    00829   for (i = 0; i < nParams; i++) {
    00830     dgramSize += xdrSize(XDR_STRING, paramNames[i]) +  xdrSize(XDR_INT32, NULL) +
    00831       + xdrSize(valueTypes[i], paramValues[i]);
    00832   }
    00833
    00834   /* check that the maximum datagram size is not exceeded */
    00835   if (dgramSize + MAX_HEADER_LENGTH > MAX_DGRAM_SIZE)
    00836     throw runtime_error("[ encodeParams() ] Maximum datagram size exceeded");
    00837
    00838   /* initialize the XDR stream */
    00839   xdrmem_create(&xdrs, buf, MAX_DGRAM_SIZE, XDR_ENCODE);
    00840
    00841   try {
    00842     /* encode the cluster name, the node name and the number of parameters */
    00843     if (!xdr_string(&xdrs, &(clusterName), strlen(clusterName)
    00844                     + 1))
    00845       throw runtime_error("[ encodeParams() ] XDR encoding error for the cluster name");
    00846
    00847     if (!xdr_string(&xdrs, &(nodeName), strlen(nodeName) + 1))
    00848       throw runtime_error("[ encodeParams() ] XDR encoding error for the node name");
    00849
    00850     if (!xdr_int(&xdrs, &(effectiveNParams)))
    00851       throw runtime_error("[ encodeParams() ] XDR encoding error for the number of parameters");
    00852
    00853     /* encode the parameters */
    00854     for (i = 0; i < nParams; i++) {
    00855       if (paramNames[i] == NULL || (valueTypes[i] == XDR_STRING &&
    00856                                     paramValues[i] == NULL)) {
    00857         logger(WARNING, "NULL parameter name or value - skipping parameter...");
    00858         continue;
    00859       }
    00860
    00861       /* parameter name */
    00862       if (!xdr_string(&xdrs, &(paramNames[i]), strlen(paramNames[i]) + 1))
    00863         throw runtime_error("[ encodeParams() ] XDR encoding error for parameter name");
    00864
    00865       /* parameter value type */
    00866       if (!xdr_int(&xdrs, &(valueTypes[i])))
    00867         throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value type");
    00868
    00869       /* parameter value */
    00870       switch (valueTypes[i]) {
    00871       case XDR_STRING:
    00872         if (!xdr_string(&xdrs, &(paramValues[i]),
    00873                         strlen(paramValues[i]) + 1))
    00874           throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00875         break;
    00876         //INT16 is not supported
    00877         /*    case XDR_INT16:
    00878               if (!xdr_short(&xdrs, (short *)(paramValues[i])))
    00879               return RET_ERROR;
    00880               break;
    00881         */    case XDR_INT32:
    00882                 if (!xdr_int(&xdrs, (int *)(paramValues[i])))
    00883                   throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00884                 break;
    00885       case XDR_REAL32:
    00886         if (!xdr_float(&xdrs, (float *)(paramValues[i])))
    00887           throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00888         break;
    00889       case XDR_REAL64:
    00890         if (!xdr_double(&xdrs, (double *)(paramValues[i])))
    00891           throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00892         break;
    00893       default:
    00894         throw runtime_error("[ encodeParams() ] Unknown type for XDR encoding");
    00895       }
    00896     }
    00897
    00898     /* encode the timestamp if necessary */
    00899     if (timestamp > 0) {
    00900       if (!xdr_int(&xdrs, &timestamp))
    00901         throw runtime_error("[ encodeParams() ] XDR encoding error for the timestamp");
    00902       dgramSize += xdrSize(XDR_INT32, NULL);
    00903     }
    00904   } catch (runtime_error& err) {
    00905     xdr_destroy(&xdrs);
    00906     throw err;
    00907   }
    00908
    00909   xdr_destroy(&xdrs);
    00910 }
    00911
    00912 #ifndef WIN32
    00913 void *bkTask(void *param) {
    00914 #else
    00915 DWORD WINAPI bkTask(void *param) {
    00916 #endif
    00917   struct stat st;
    00918 #ifndef WIN32
    00919   struct timespec delay;
    00920 #else
    00921   DWORD delay;
    00922 #endif
    00923   bool resourceChanged, haveChange;
    00924   int nextOp = -1, i, ret;
    00925   int generalInfoCount;
    00926   time_t crtTime, timeRemained;
    00927   time_t nextRecheck = 0, nextJobInfoSend = 0, nextSysInfoSend = 0;
    00928   ApMon *apm = (ApMon *)param;
    00929   char logmsg[200];
    00930
    00931   logger(INFO, "[Starting background thread...]");
    00932   apm -> bkThreadStarted = true;
    00933
    00934   crtTime = time(NULL);
    00935
    00936   pthread_mutex_lock(&(apm -> mutexBack));
    00937   if (apm -> confCheck) {
    00938     nextRecheck = crtTime + apm -> crtRecheckInterval;
    00939     //sprintf(logmsg, "###1 crt %ld interv %ld recheck %ld ", crtTime,
    00940     //   apm -> crtRecheckInterval, nextRecheck);
    00941     //logger(FINE, logmsg);
    00942     //fflush(stdout);
    00943   }
    00944   if (apm -> jobMonitoring)
    00945     nextJobInfoSend = crtTime + apm -> jobMonitorInterval;
    00946   if (apm -> sysMonitoring)
    00947     nextSysInfoSend = crtTime + apm -> sysMonitorInterval;
    00948   pthread_mutex_unlock(&(apm -> mutexBack));
    00949
    00950   timeRemained = -1;
    00951   generalInfoCount = 0;
    00952
    00953   while (1) {
    00954     pthread_mutex_lock(&apm -> mutexBack);
    00955     if (apm -> stopBkThread) {
    00956 //      printf("### stopBkThread \n");
    00957       pthread_mutex_unlock(&apm -> mutexBack);
    00958       break;
    00959     }
    00960     pthread_mutex_unlock(&apm -> mutexBack);
    00961
    00962     //sprintf(logmsg, "### 2 recheck %ld sys %ld ", nextRecheck,
    00963     //    nextSysInfoSend);
    00964     //logger(FINE, logmsg);
    00965
    00966     /* determine the next operation that must be performed */
    00967     if (nextRecheck > 0 && (nextJobInfoSend <= 0 ||
    00968                             nextRecheck <= nextJobInfoSend)) {
    00969       if (nextSysInfoSend <= 0 || nextRecheck <= nextSysInfoSend) {
    00970         nextOp = RECHECK_CONF;
    00971         timeRemained = nextRecheck - crtTime;
    00972       } else {
    00973         nextOp = SYS_INFO_SEND;
    00974         timeRemained = nextSysInfoSend - crtTime;
    00975       }
    00976     } else {
    00977       if (nextJobInfoSend > 0 && (nextSysInfoSend <= 0 ||
    00978                                   nextJobInfoSend <= nextSysInfoSend)) {
    00979         nextOp = JOB_INFO_SEND;
    00980         timeRemained = nextJobInfoSend - crtTime;
    00981       } else if (nextSysInfoSend > 0) {
    00982         nextOp = SYS_INFO_SEND;
    00983         timeRemained = nextSysInfoSend - crtTime;
    00984       }
    00985     }
    00986
    00987     if (timeRemained == -1)
    00988       timeRemained = RECHECK_INTERVAL;
    00989
    00990 #ifndef WIN32
    00991     /* the moment when the next operation should be performed */
    00992     delay.tv_sec = crtTime + timeRemained;
    00993     delay.tv_nsec = 0;
    00994 #else
    00995     delay = (/*crtTime +*/ timeRemained) * 1000;  // this is in millis
    00996 #endif
    00997
    00998     pthread_mutex_lock(&(apm -> mutexBack));
    00999
    01000     pthread_mutex_lock(&(apm -> mutexCond));
    01001     /* check for changes in the settings */
    01002     haveChange = false;
    01003     if (apm -> jobMonChanged || apm -> sysMonChanged || apm -> recheckChanged)
    01004       haveChange = true;
    01005     if (apm -> jobMonChanged) {
    01006       if (apm -> jobMonitoring)
    01007         nextJobInfoSend = crtTime + apm -> jobMonitorInterval;
    01008       else
    01009         nextJobInfoSend = -1;
    01010       apm -> jobMonChanged = false;
    01011     }
    01012     if (apm -> sysMonChanged) {
    01013       if (apm -> sysMonitoring)
    01014         nextSysInfoSend = crtTime + apm -> sysMonitorInterval;
    01015       else
    01016         nextSysInfoSend = -1;
    01017       apm -> sysMonChanged = false;
    01018     }
    01019     if (apm -> recheckChanged) {
    01020       if (apm -> confCheck) {
    01021         nextRecheck = crtTime + apm -> crtRecheckInterval;
    01022       }
    01023       else
    01024         nextRecheck = -1;
    01025       apm -> recheckChanged = false;
    01026     }
    01027     pthread_mutex_unlock(&(apm -> mutexBack));
    01028
    01029     if (haveChange) {
    01030       pthread_mutex_unlock(&(apm -> mutexCond));
    01031       continue;
    01032     }
    01033
    01034     /* wait until the next operation should be performed or until
    01035        a change in the settings occurs */
    01036 #ifndef WIN32
    01037     ret = pthread_cond_timedwait(&(apm -> confChangedCond),
    01038                                 &(apm -> mutexCond), &delay);
    01039     pthread_mutex_unlock(&(apm -> mutexCond));
    01040 #else
    01041     pthread_mutex_unlock(&(apm -> mutexCond));
    01042     ret = WaitForSingleObject(apm->confChangedCond, delay);
    01043 #endif
    01044     if (ret == ETIMEDOUT) {
    01045 //      printf("### ret TIMEDOUT\n");
    01046       /* now perform the operation */
    01047       if (nextOp == JOB_INFO_SEND) {
    01048         apm -> sendJobInfo();
    01049         crtTime = time(NULL);
    01050         nextJobInfoSend = crtTime + apm -> getJobMonitorInterval();
    01051       }
    01052
    01053       if (nextOp == SYS_INFO_SEND) {
    01054         apm -> sendSysInfo();
    01055         if (apm -> getGenMonitoring()) {
    01056           if (generalInfoCount <= 1)
    01057             apm -> sendGeneralInfo();
    01058           generalInfoCount = (generalInfoCount + 1) % apm -> genMonitorIntervals;
    01059         }
    01060         crtTime = time(NULL);
    01061         nextSysInfoSend = crtTime + apm -> getSysMonitorInterval();
    01062       }
    01063
    01064       if (nextOp == RECHECK_CONF) {
    01065         //logger(FINE, "### recheck conf");
    01066         resourceChanged = false;
    01067         try {
    01068           if (apm -> initType == FILE_INIT) {
    01069             sprintf(logmsg, "Checking for modifications for file %s ",
    01070                     apm -> initSources[0]);
    01071             logger(INFO, logmsg);
    01072             stat(apm -> initSources[0], &st);
    01073             if (st.st_mtime > apm -> lastModifFile) {
    01074               sprintf(logmsg, "File %s modified ", apm -> initSources[0]);
    01075               logger(INFO, logmsg);
    01076               resourceChanged = true;
    01077             }
    01078           }
    01079
    01080           // check the configuration URLs
    01081           for (i = 0; i < apm -> confURLs.nConfURLs; i++) {
    01082             sprintf(logmsg, "[Checking for modifications for URL %s ] ",
    01083                    apm -> confURLs.vURLs[i]);
    01084             logger(INFO, logmsg);
    01085             if (urlModified(apm -> confURLs.vURLs[i], apm -> confURLs.lastModifURLs[i])) {
    01086               sprintf(logmsg, "URL %s modified ", apm -> confURLs.vURLs[i]);
    01087               logger(INFO, logmsg);
    01088               resourceChanged = true;
    01089               break;
    01090             }
    01091           }
    01092
    01093           if (resourceChanged) {
    01094             logger(INFO, "Reloading configuration...");
    01095             if (apm -> initType == FILE_INIT)
    01096               apm -> initialize(apm -> initSources[0], false);
    01097             else
    01098               apm -> initialize(apm -> nInitSources, apm -> initSources, false);
    01099           }
    01100           apm -> setCrtRecheckInterval(apm -> getRecheckInterval());
    01101         } catch (runtime_error &err) {
    01102           logger(WARNING, err.what());
    01103           logger(WARNING, "Increasing the time interval for reloading the configuration...");
    01104           apm -> setCrtRecheckInterval(apm -> getRecheckInterval() * 5);
    01105         }
    01106         crtTime = time(NULL);
    01107         nextRecheck = crtTime + apm -> getCrtRecheckInterval();
    01108         //sleep(apm -> getCrtRecheckInterval());
    01109       }
    01110     }
    01111
    01112   } // while
    01113
    01114 #ifndef WIN32
    01115   return NULL; // it doesn't matter what we return here
    01116 #else
    01117   return 0;
    01118 #endif
    01119 }
    01120
    01121 void ApMon::setConfRecheck(bool confCheck, long interval) {
    01122   char logmsg[100];
    01123   if (confCheck) {
    01124     sprintf(logmsg, "Enabling configuration reloading (interval %ld)",
    01125             interval);
    01126     logger(INFO, logmsg);
    01127   }
    01128
    01129   pthread_mutex_lock(&mutexBack);
    01130   if (initType == DIRECT_INIT) { // no need to reload the configuration
    01131     logger(WARNING, "[ setConfRecheck() } No configuration file/URL to reload.");
    01132     return;
    01133   }
    01134
    01135   this -> confCheck = confCheck;
    01136   this -> recheckChanged = true;
    01137   if (confCheck) {
    01138     if (interval > 0) {
    01139       this -> recheckInterval = interval;
    01140       this -> crtRecheckInterval = interval;
    01141     } else {
    01142       this -> recheckInterval = RECHECK_INTERVAL;
    01143       this -> crtRecheckInterval = RECHECK_INTERVAL;
    01144     }
    01145     setBackgroundThread(true);
    01146   }
    01147   else {
    01148     if (jobMonitoring == false && sysMonitoring == false)
    01149       setBackgroundThread(false);
    01150   }
    01151   pthread_mutex_unlock(&mutexBack);
    01152
    01153 }
    01154
    01155 void ApMon::setRecheckInterval(long val) {
    01156   if (val > 0) {
    01157     setConfRecheck(true, val);
    01158   }
    01159   else {
    01160     setConfRecheck(false, val);
    01161   }
    01162 }
    01163
    01164 void ApMon::setCrtRecheckInterval(long val) {
    01165   pthread_mutex_lock(&mutexBack);
    01166   crtRecheckInterval = val;
    01167   pthread_mutex_unlock(&mutexBack);
    01168 }
    01169
    01170 void ApMon::setJobMonitoring(bool jobMonitoring, long interval) {
    01171   char logmsg[100];
    01172   if (jobMonitoring) {
    01173     sprintf(logmsg, "Enabling job monitoring, time interval %ld s... ", interval);
    01174     logger(INFO, logmsg);
    01175   } else
    01176     logger(INFO, "Disabling job monitoring...");
    01177
    01178   pthread_mutex_lock(&mutexBack);
    01179   this -> jobMonitoring = jobMonitoring;
    01180   this -> jobMonChanged = true;
    01181   if (jobMonitoring == true) {
    01182     if (interval > 0)
    01183       this -> jobMonitorInterval = interval;
    01184     else
    01185       this -> jobMonitorInterval = JOB_MONITOR_INTERVAL;
    01186     setBackgroundThread(true);
    01187   } else {
    01188     // disable the background thread if it is not needed anymore
    01189     if (this -> sysMonitoring == false && this -> confCheck == false)
    01190       setBackgroundThread(false);
    01191   }
    01192   pthread_mutex_unlock(&mutexBack);
    01193 }
    01194
    01195 void ApMon::setSysMonitoring(bool sysMonitoring, long interval) {
    01196   char logmsg[100];
    01197   if (sysMonitoring) {
    01198     sprintf(logmsg, "Enabling system monitoring, time interval %ld s... ", interval);
    01199     logger(INFO, logmsg);
    01200   } else
    01201     logger(INFO, "Disabling system monitoring...");
    01202
    01203   pthread_mutex_lock(&mutexBack);
    01204   this -> sysMonitoring = sysMonitoring;
    01205   this -> sysMonChanged = true;
    01206   if (sysMonitoring == true) {
    01207     if (interval > 0)
    01208       this -> sysMonitorInterval = interval;
    01209     else
    01210       this -> sysMonitorInterval = SYS_MONITOR_INTERVAL;
    01211     setBackgroundThread(true);
    01212   }  else {
    01213     // disable the background thread if it is not needed anymore
    01214     if (this -> jobMonitoring == false && this -> confCheck == false)
    01215       setBackgroundThread(false);
    01216   }
    01217   pthread_mutex_unlock(&mutexBack);
    01218 }
    01219
    01220 void ApMon::setGenMonitoring(bool genMonitoring, int nIntervals) {
    01221   char logmsg[100];
    01222   sprintf(logmsg, "Setting general information monitoring to %s ",
    01223          boolStrings[(int)genMonitoring]);
    01224   logger(INFO, logmsg);
    01225
    01226   pthread_mutex_lock(&mutexBack);
    01227   this -> genMonitoring = genMonitoring;
    01228   this -> sysMonChanged = true;
    01229   if (genMonitoring == true) {
    01230     if (nIntervals > 0)
    01231       this -> genMonitorIntervals = nIntervals;
    01232     else
    01233       this -> genMonitorIntervals = GEN_MONITOR_INTERVALS;
    01234
    01235     if (this -> sysMonitoring == false) {
    01236       pthread_mutex_unlock(&mutexBack);
    01237       setSysMonitoring(true);
    01238       pthread_mutex_lock(&mutexBack);
    01239     }
    01240   } // TODO: else check if we can stop the background thread (if no
    01241   // system parameters are enabled for monitoring)
    01242   pthread_mutex_unlock(&mutexBack);
    01243 }
    01244
    01245 void ApMon::setBackgroundThread(bool val) {
    01246   // mutexBack is locked
    01247   if (val == true) {
    01248     if (!haveBkThread) {
    01249 #ifndef WIN32
    01250       pthread_create(&bkThread, NULL, &bkTask, this);
    01251 #else
    01252       DWORD dummy;
    01253       bkThread = CreateThread(NULL, 65536, &bkTask, this, 0, &dummy);
    01254 #endif
    01255       haveBkThread = true;
    01256     } else {
    01257       pthread_mutex_lock(&mutexCond);
    01258       pthread_cond_signal(&confChangedCond);
    01259       pthread_mutex_unlock(&mutexCond);
    01260     }
    01261   }
    01262   if (val == false) {
    01263     //if (bkThreadStarted) {
    01264     if (haveBkThread) {
    01265       stopBkThread = true;
    01266       pthread_mutex_unlock(&mutexBack);
    01267 #ifndef WIN32
    01268       pthread_mutex_lock(&mutexCond);
    01269 #endif
    01270       pthread_cond_signal(&confChangedCond);
    01271       logger(INFO, "[Stopping the background thread...]");
    01272 #ifndef WIN32
    01273       pthread_mutex_unlock(&mutexCond);
    01274       pthread_join(bkThread, NULL);
    01275 #else
    01276       WaitForSingleObject(bkThread, INFINITE);
    01277 #endif
    01278       pthread_mutex_lock(&mutexBack);
    01279 //      logger(INFO, "bk thread stopped!");
    01280       haveBkThread = false;
    01281       bkThreadStarted = false;
    01282       stopBkThread = false;
    01283     }
    01284   }
    01285 }
    01286
    01287 void ApMon::addJobToMonitor(long pid, char *workdir, char *clusterName,
    01288                             char *nodeName) throw(runtime_error) {
    01289   if (nMonJobs >= MAX_MONITORED_JOBS)
    01290     throw runtime_error("[ addJobToMonitor() ] Maximum number of jobs that can be monitored exceeded.");
    01291   MonitoredJob job;
    01292   job.pid = pid;
    01293   if (workdir == NULL)
    01294     strcpy(job.workdir, "");
    01295   else
    01296     strcpy(job.workdir, workdir);
    01297
    01298  if (clusterName == NULL || strlen(clusterName) == 0)
    01299     strcpy(job.clusterName, "ApMon_JobMon");
    01300   else
    01301     strcpy(job.clusterName, clusterName);
    01302  if (nodeName == NULL || strlen(nodeName) == 0)
    01303     strcpy(job.nodeName, this -> myIP);
    01304   else
    01305     strcpy(job.nodeName, nodeName);
    01306
    01307   monJobs[nMonJobs++] = job;
    01308 }
    01309
    01310 void ApMon::removeJobToMonitor(long pid) throw(runtime_error) {
    01311   int i, j;
    01312   char msg[100];
    01313
    01314   if (nMonJobs <= 0)
    01315     throw runtime_error("[ removeJobToMonitor() ] There are no monitored jobs.");
    01316
    01317   for (i = 0; i < nMonJobs; i++) {
    01318     if (monJobs[i].pid == pid) {
    01319       /* found the job, now remove it */
    01320       for (j = i; j < nMonJobs - 1; j++)
    01321         monJobs[j] = monJobs[j + 1];
    01322       nMonJobs--;
    01323       return;
    01324     }
    01325   }
    01326
    01327   /* the job was not found */
    01328   sprintf(msg, "removeJobToMonitor(): Job %ld not found.", pid);
    01329   throw runtime_error(msg);
    01330 }
    01331
    01332 void ApMon::setSysMonClusterNode(char *clusterName, char *nodeName) {
    01333   free (sysMonCluster); free(sysMonNode);
    01334   sysMonCluster = strdup(clusterName);
    01335   sysMonNode = strdup(nodeName);
    01336 }
    01337
    01338 void ApMon::setLogLevel(char *newLevel_s) {
    01339   int newLevel;
    01340   const char *levels[5] = {"FATAL", "WARNING", "INFO", "FINE", "DEBUG"};
    01341   char logmsg[100];
    01342
    01343   for (newLevel = 0; newLevel < 5; newLevel++)
    01344     if (strcmp(newLevel_s, levels[newLevel]) == 0)
    01345       break;
    01346
    01347   if (newLevel >= 5) {
    01348     sprintf(logmsg, "[ setLogLevel() ] Invalid level value: %s", newLevel_s);
    01349     logger(WARNING, logmsg);
    01350   }
    01351   else
    01352     logger(0, NULL, newLevel);
    01353 }
    01354
    01355
    01356 void ApMon::setMaxMsgRate(int maxRate) {
    01357   if (maxRate > 0)
    01358     this -> maxMsgRate  = maxRate;
    01359 }
    01360
    01361 void ApMon::initSocket() throw(runtime_error) {
    01362   int optval1 = 1;
    01363   struct timeval optval2;
    01364   int ret1, ret2, ret3;
    01365
    01366   sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    01367   if (sockfd < 0)
    01368     throw runtime_error("[ initSocket() ] Error creating socket");
    01369   ret1 = setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *) &optval1,
    01370                     sizeof(optval1));
    01371
    01372   /* set connection timeout */
    01373   optval2.tv_sec = 20;
    01374   optval2.tv_usec = 0;
    01375   ret2 = setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, (char *) &optval2,
    01376                     sizeof(optval2));
    01377   ret3 = setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (char *) &optval2,
    01378                     sizeof(optval2));
    01379   if (ret1 != 0 || ret2 != 0 || ret3 != 0)
    01380     throw runtime_error("[ initSocket() ] Error initializing socket.");
    01381 }
    01382
    01383
    01384 void ApMon::parseConf(FILE *fp, int *nDestinations, char **destAddresses,
    01385                      int *destPorts, char **destPasswds)
    01386   throw(runtime_error) {
    01387   int i, ch;
    01388   char *line = (char *)malloc ((MAX_STRING_LEN1) * sizeof(char));
    01389   char *tmp = NULL;
    01390   char *loglevel_s;
    01391 //  char sbuf[30];
    01392 //  char *pbuf = sbuf;
    01393
    01394   /* parse the input file */
    01395   while(fgets(line, MAX_STRING_LEN, fp) != NULL) {
    01396
    01397     if (tmp != NULL) {
    01398       free(tmp);
    01399       tmp = NULL;
    01400     }
    01401
    01402     line[MAX_STRING_LEN - 1] = 0;
    01403     /* check if the line was too long */
    01404     ch = fgetc(fp); // see if we are at the end of the file
    01405     ungetc(ch, fp);
    01406     if (line[strlen(line) - 1] != 10 && ch != EOF) {
    01407       /* if the line doesn't end with a \n and we are not at the end
    01408          of file, the line from the file was longer than MAX_STRING_LEN */
    01409       fclose(fp);
    01410       throw runtime_error ("[ parseConf() ] Maximum line length exceeded in the conf file");
    01411     }
    01412
    01413     tmp = trimString(line);
    01414
    01415     /* skip the blank lines and the comment lines */
    01416     if (strlen(tmp) == 0 || strchr(tmp, '#') == tmp)
    01417       continue;
    01418
    01419     if (strstr(tmp, "xApMon_loglevel") == tmp) {
    01420       char *tmp2 = tmp;
    01421       strtok/*_r*/(tmp2, "= ");//, &pbuf);
    01422       loglevel_s = strtok/*_r*/(NULL, "= ");//, &pbuf);
    01423       setLogLevel(loglevel_s);
    01424       continue;
    01425     }
    01426
    01427     if (strstr(tmp, "xApMon_") == tmp) {
    01428       parseXApMonLine(tmp);
    01429       continue;
    01430     }
    01431
    01432     if (*nDestinations >= MAX_N_DESTINATIONS) {
    01433       free(line); free(tmp);
    01434       for (i = 0; i < *nDestinations; i++) {
    01435         free(destAddresses[i]);
    01436         free(destPasswds[i]);
    01437       }
    01438       fclose(fp);
    01439       throw runtime_error("[ parseConf() ] Maximum number of destinations exceeded.");
    01440     }
    01441
    01442     addToDestinations(tmp, nDestinations, destAddresses, destPorts,
    01443                       destPasswds);
    01444   }
    01445
    01446   if (tmp != NULL)
    01447     free(tmp);
    01448   free(line);
    01449 }
    01450
    01451 bool ApMon::shouldSend() {
    01452
    01453   long now = time(NULL);
    01454   bool doSend;
    01455   char msg[200];
    01456
    01457   //printf("now %ld crtTime %ld\n", now, crtTime);
    01458
    01459   if (now != crtTime){
    01461     prvSent = hWeight * prvSent + (1.0 - hWeight) * crtSent / (now - crtTime);
    01462     prvTime = crtTime;
    01463     sprintf(msg, "previously sent: %ld dropped: %ld", crtSent, crtDrop);
    01464     logger(DEBUG, msg);
    01466     crtTime = now;
    01467     crtSent = 0;
    01468     crtDrop = 0;
    01469     //printf("\n");
    01470   }
    01471
    01473   int valSent = (int)(prvSent * hWeight + crtSent * (1.0 - hWeight));
    01474
    01475   doSend = true;
    01477   int level = this -> maxMsgRate - this -> maxMsgRate / 10;
    01478
    01479
    01480   if (valSent > (this -> maxMsgRate - level)) {
    01481     //int max10 = this -> maxMsgRate / 10;
    01482     int rnd  = rand() % (this -> maxMsgRate / 10);
    01483     doSend = (rnd <  (this -> maxMsgRate - valSent));
    01484   }
    01486   if (doSend) {
    01487     crtSent++;
    01488     //printf("#");
    01489   } else {
    01490     crtDrop++;
    01491     //printf(".");
    01492   }
    01493
    01494   return doSend;
    01495 }
    01496
    01497
    01498
    01499
    01500