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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 #ifdef __ICC
    00055 // disable icc remark #2259: non-pointer conversion from "X" to "Y" may lose significant bits
    00056 #pragma warning(disable:2259)
    00057 #endif
    00058
    00059 //========= Implementations of the functions ===================
    00060
    00061 ApMon::ApMon(char *initsource)
    00062   throw(runtime_error) {
    00063
    00064   if (initsource == NULL)
    00065     throw runtime_error("[ ApMon() ]  No conf file/URL provided");
    00066
    00067   if (strstr(initsource, "http://") == initsource) {
    00068     char *destList[1];
    00069     destList[0] = initsource;
    00070     constructFromList(1, destList);
    00071   } else {
    00072     nInitSources = 1;
    00073     initType = FILE_INIT;
    00074     initSources = (char **)malloc(nInitSources * sizeof(char *));
    00075     if (initSources == NULL)
    00076       throw runtime_error("[ ApMon() ] Error allocating memory.");
    00077
    00078     initSources[0] = strdup(initsource);
    00079     initMonitoring();
    00080
    00081     initialize(initsource, true);
    00082   }
    00083 }
    00084
    00085 void ApMon::initialize(char *filename, bool firstTime)
    00086   throw(runtime_error) {
    00087
    00088   char *destAddresses[MAX_N_DESTINATIONS];
    00089   int destPorts[MAX_N_DESTINATIONS];
    00090   char *destPasswds[MAX_N_DESTINATIONS];
    00091   int nDest = 0, i;
    00092   ConfURLs confURLs;
    00093
    00094   confURLs.nConfURLs = 0;
    00095
    00096   try {
    00097     loadFile(filename, &nDest, destAddresses, destPorts, destPasswds);
    00098
    00099     arrayInit(nDest, destAddresses, destPorts, destPasswds, firstTime);
    00100   } catch (runtime_error& err) {
    00101     if (firstTime)
    00102       throw err;
    00103     else {
    00104       logger(WARNING, err.what());
    00105       logger(WARNING, "Error reloading the configuration. Keeping the previous one.");
    00106       return;
    00107     }
    00108   }
    00109
    00110   for (i = 0; i < nDest; i++) {
    00111     free(destAddresses[i]);
    00112     free(destPasswds[i]);
    00113   }
    00114
    00115   pthread_mutex_lock(&mutex);
    00116   this -> confURLs = confURLs;
    00117   pthread_mutex_unlock(&mutex);
    00118 }
    00119
    00120 void ApMon::loadFile(char *filename, int *nDestinations, char **destAddresses,
    00121                      int *destPorts, char **destPasswds)
    00122   throw(runtime_error) {
    00123   FILE *f;
    00124   char msg[100];
    00125
    00126   /* initializations for the destination addresses */
    00127   f = fopen(filename, "rt");
    00128   if (f == NULL) {
    00129     throw runtime_error("[ loadFile() ] Error opening configuration file");
    00130   }
    00131
    00132   sprintf(msg, "Loading file %s ...", filename);
    00133   logger(INFO, msg);
    00134
    00135   lastModifFile = time(NULL);
    00136
    00137   parseConf(f, nDestinations, destAddresses, destPorts,
    00138             destPasswds);
    00139   fclose(f);
    00140 }
    00141
    00142 ApMon::ApMon(int nDestinations, char **destinationsList) throw(runtime_error){
    00143   constructFromList(nDestinations, destinationsList);
    00144 }
    00145
    00146 void ApMon::constructFromList(int nDestinations, char **destinationsList)
    00147   throw(runtime_error) {
    00148   int i;
    00149
    00150   if (destinationsList == NULL)
    00151     throw runtime_error("[ constructFromList() ] Null destination list");
    00152
    00153 #ifdef __APPLE__
    00154   initType = OLIST_INIT;
    00155 #else
    00156   initType = LIST_INIT;
    00157 #endif
    00158
    00159   initMonitoring();
    00160
    00161   /* save the initialization list */
    00162   nInitSources = nDestinations;
    00163   initSources = (char **)malloc(nInitSources * sizeof(char*));
    00164   if (initSources == NULL)
    00165     throw runtime_error("[ ApMon() ] Error allocating memory.");
    00166
    00167   for (i = 0; i < nInitSources; i++)
    00168     initSources[i] = strdup(destinationsList[i]);
    00169
    00170   initialize(nDestinations, destinationsList, true);
    00171 }
    00172
    00173 void ApMon::initialize(int nDestinations, char **destinationsList,
    00174                        bool firstTime) throw(runtime_error) {
    00175   char *destAddresses[MAX_N_DESTINATIONS];
    00176   int destPorts[MAX_N_DESTINATIONS];
    00177   char *destPasswds[MAX_N_DESTINATIONS];
    00178   char errmsg[200];
    00179   int i;
    00180   int cnt = 0;
    00181   ConfURLs confURLs;
    00182
    00183   logger(INFO, "Initializing destination addresses & ports:");
    00184
    00185   if (nDestinations > MAX_N_DESTINATIONS)
    00186     throw runtime_error("[ initialize() ] Maximum number of destinations exceeded");
    00187
    00188
    00189   confURLs.nConfURLs = 0;
    00190
    00191   for (i = 0; i < nDestinations; i++) {
    00192     try {
    00193       if (strstr(destinationsList[i], "http") == destinationsList[i])
    00194         getDestFromWeb(destinationsList[i], &cnt,
    00195                        destAddresses, destPorts, destPasswds, confURLs);
    00196       else
    00197         addToDestinations(destinationsList[i], &cnt,
    00198                         destAddresses, destPorts, destPasswds);
    00199
    00200     } catch (runtime_error &e) {
    00201       sprintf(errmsg, "[ initialize() ] Error while loading the configuration: %s", e.what());
    00202       logger(WARNING, errmsg);
    00203       if (!firstTime) {
    00204         for (i = 0; i < cnt; i++) {
    00205           free(destAddresses[i]);
    00206           free(destPasswds[i]);
    00207         }
    00208         logger(WARNING, "Configuration not reloaded successfully. Keeping the previous one.");
    00209         return;
    00210       }
    00211     }  // catch
    00212   }  // for
    00213
    00214   try {
    00215     arrayInit(cnt, destAddresses, destPorts, destPasswds, firstTime);
    00216   } catch (runtime_error& err) {
    00217     if (firstTime)
    00218       throw err;
    00219     else {
    00220       logger(WARNING, "Error reloading the configuration. Keeping the previous one.");
    00221       return;
    00222     }
    00223   }
    00224
    00225   for (i = 0; i < cnt; i++) {
    00226     free(destAddresses[i]);
    00227     free(destPasswds[i]);
    00228   }
    00229
    00230   pthread_mutex_lock(&mutex);
    00231   this -> confURLs = confURLs;
    00232   pthread_mutex_unlock(&mutex);
    00233 }
    00234
    00235 void ApMon::addToDestinations(char *line, int *nDestinations,
    00236                char *destAddresses[], int destPorts[], char *destPasswds[]) {
    00237   char *addr, *port, *passwd;
    00238   const char *sep1 = " \t";
    00239   const char *sep2 = ":";
    00240
    00241   char *tmp = strdup(line);
    00242   char *firstToken;
    00243 //  char buf[MAX_STRING_LEN];
    00244 //  char *pbuf = buf;
    00245
    00246   /* the address & port are separated from the password with spaces */
    00247   firstToken = strtok/*_r*/(tmp, sep1);//, &pbuf);
    00248   passwd = strtok/*_r*/(NULL, sep1);//, &pbuf);
    00249
    00250   /* the address and the port are separated with ":" */
    00251   addr = strtok/*_r*/(firstToken, sep2);//, &pbuf);
    00252   port = strtok/*_r*/(NULL, sep2);//, &pbuf);
    00253   destAddresses[*nDestinations] = strdup(addr);
    00254   if (port == NULL)
    00255     destPorts[*nDestinations] = DEFAULT_PORT;
    00256   else
    00257     destPorts[*nDestinations] = atoi(port);
    00258   if (passwd == NULL)
    00259     destPasswds[*nDestinations] = strdup("");
    00260   else
    00261     destPasswds[*nDestinations] = strdup(passwd);
    00262   (*nDestinations)++;
    00263
    00264   free(tmp);
    00265 }
    00266
    00267 void ApMon::getDestFromWeb(char *url, int *nDestinations,
    00268   char *destAddresses[], int destPorts[], char *destPasswds[],
    00269                            ConfURLs& confURLs) throw(runtime_error) {
    00270   char temp_filename[300];
    00271   FILE *tmp_file;
    00272   char *line, *ret, *tmp = NULL;
    00273   bool modifLineFound;
    00274   long mypid = getpid();
    00275   char str1[20], str2[20];
    00276   int totalSize, headerSize, contentSize;
    00277
    00278 #ifndef WIN32
    00279   sprintf(temp_filename, "/tmp/apmon_webconf%ld", mypid);
    00280 #else
    00281   char *tmpp = getenv("TEMP");
    00282   if(tmpp == NULL)
    00283           tmpp = getenv("TMP");
    00284   if(tmpp == NULL)
    00285           tmpp = "c:";
    00286   sprintf(temp_filename, "%s\\apmon_webconf%ld", tmpp, mypid);
    00287 #endif
    00288   /* get the configuration file from web and put it in a temporary file */
    00289   totalSize = httpRequest(url, (char*)"GET", temp_filename);
    00290
    00291   /* read the configuration from the temporary file */
    00292   tmp_file = fopen(temp_filename, "rt");
    00293   if (tmp_file == NULL)
    00294     throw runtime_error("[ getDestFromWeb() ] Error getting the configuration web page");
    00295
    00296   line = (char*)malloc((MAX_STRING_LEN + 1) * sizeof(char));
    00297
    00298   //check the HTTP header to see if we got the page correctly
    00299   fgets(line, MAX_STRING_LEN, tmp_file);
    00300   sscanf(line, "%s %s", str1, str2);
    00301   if (atoi(str2) != 200) {
    00302     free(line);
    00303     fclose(tmp_file);
    00304     throw runtime_error("[ getDestFromWeb() ] The web page does not exist on the server");
    00305   }
    00306
    00307   confURLs.vURLs[confURLs.nConfURLs] = strdup(url);
    00308
    00309   // check the  header for the "Last-Modified" and "Content-Length" lines
    00310   modifLineFound = false;
    00311   contentSize = 0;
    00312   do {
    00313     if (tmp != NULL)
    00314       free(tmp);
    00315     ret = fgets(line, MAX_STRING_LEN, tmp_file);
    00316     if (ret == NULL) {
    00317       free(line); fclose(tmp_file);
    00318       throw runtime_error("[ getDestFromWeb() ] Error getting the configuration web page");
    00319     }
    00320     if (strstr(line, "Last-Modified") == line) {
    00321       modifLineFound = true;
    00322       confURLs.lastModifURLs[confURLs.nConfURLs] = strdup(line);
    00323     }
    00324
    00325     if (strstr(line, "Content-Length") == line) {
    00326       sscanf(line, "%s %d", str1, &contentSize);
    00327     }
    00328
    00329     tmp = trimString(line);
    00330   } while (strlen(tmp) != 0);
    00331   free(tmp); free(line);
    00332
    00333   if (!modifLineFound)
    00334     confURLs.lastModifURLs[confURLs.nConfURLs] = strdup("");
    00335   confURLs.nConfURLs++;
    00336
    00337   headerSize = ftell(tmp_file);
    00338   if (totalSize - headerSize < contentSize) {
    00339     fclose(tmp_file);
    00340     throw runtime_error("[ getDestFromWeb() ] Web page received incompletely");
    00341   }
    00342
    00343   try {
    00344     parseConf(tmp_file, nDestinations, destAddresses, destPorts,
    00345               destPasswds);
    00346   } catch (...) {
    00347     fclose(tmp_file);
    00348     unlink(temp_filename);
    00349     throw;
    00350   }
    00351
    00352   fclose(tmp_file);
    00353   unlink(temp_filename);
    00354 }
    00355
    00356
    00357 ApMon::ApMon(int nDestinations, char **destAddresses, int *destPorts,
    00358              char **destPasswds)
    00359 throw(runtime_error) {
    00360   initMonitoring();
    00361
    00362   arrayInit(nDestinations, destAddresses, destPorts, destPasswds);
    00363 }
    00364
    00365 void ApMon::arrayInit(int nDestinations, char **destAddresses,
    00366                       int *destPorts, char **destPasswds)
    00367   throw(runtime_error) {
    00368         arrayInit(nDestinations, destAddresses, destPorts, destPasswds, true);
    00369 }
    00370
    00371
    00372 void ApMon::arrayInit(int nDestinations, char **destAddresses, int *destPorts,
    00373                       char **destPasswds, bool firstTime)
    00374 throw(runtime_error) {
    00375   int i, j;
    00376   int ret;
    00377   char *ipAddr, logmsg[100];
    00378   bool found, havePublicIP;
    00379   int tmpNDestinations;
    00380   char **tmpAddresses, **tmpPasswds;
    00381   int *tmpPorts;
    00382
    00383   if (destAddresses == NULL || destPorts == NULL || nDestinations == 0)
    00384     throw runtime_error("[ arrayInit() ] Destination addresses or ports not provided");
    00385
    00386   /* initializations that we have to do only once */
    00387   if (firstTime) {
    00388     //this -> appPID = getpid();
    00389
    00390     this -> nMonJobs = 0;
    00391     this -> monJobs = (MonitoredJob *)malloc(MAX_MONITORED_JOBS *
    00392                                             sizeof(MonitoredJob));
    00393
    00394     try {
    00395       this -> numCPUs = ProcUtils::getNumCPUs();
    00396     } catch (procutils_error &err) {
    00397       logger(WARNING, err.what());
    00398       this -> numCPUs = 0;
    00399     }
    00400
    00401     /* get the names of the network interfaces */
    00402     this -> nInterfaces = 0;
    00403     try {
    00404       ProcUtils::getNetworkInterfaces(this -> nInterfaces,
    00405                                      this -> interfaceNames);
    00406     } catch (procutils_error &err) {
    00407       logger(WARNING, err.what());
    00408       this -> nInterfaces = 0;
    00409     }
    00410
    00411     /* get the hostname of the machine */
    00412     ret = gethostname(this -> myHostname, MAX_STRING_LEN -1);
    00413     if (ret < 0) {
    00414       logger(WARNING, "Could not obtain the local hostname");
    00415       strcpy(myHostname, "unknown");
    00416     } else
    00417       myHostname[MAX_STRING_LEN - 1] = 0;
    00418
    00419     /* get the IPs of the machine */
    00420     this -> numIPs = 0; havePublicIP = false;
    00421     strcpy(this -> myIP, "unknown");
    00422
    00423     /* default values for cluster name and node name */
    00424     this -> clusterName = strdup("ApMon_UserSend");
    00425     this -> nodeName = strdup(myHostname);
    00426
    00427 #ifndef WIN32
    00428     int sockd = socket(PF_INET, SOCK_STREAM, 0);
    00429     if(sockd < 0){
    00430       logger(WARNING, "Could not obtain local IP addresses");
    00431     } else {
    00432       for (i = 0; i < this -> nInterfaces; i++) {
    00433     struct ifreq ifr;
    00434         memset(&ifr, 0, sizeof(ifr));
    00435         strncpy(ifr.ifr_name, this -> interfaceNames[i], sizeof(ifr.ifr_name) - 1);
    00436         if(ioctl(sockd, SIOCGIFADDR, &ifr)<0)
    00437           continue;     //????????
    00438         char ip[4], tmp_s[20];
    00439 #ifdef __APPLE__
    00440         memcpy(ip, ifr.ifr_addr.sa_data+2, 4);
    00441 #else
    00442         memcpy(ip, ifr.ifr_hwaddr.sa_data+2, 4);
    00443 #endif
    00444         strcpy(tmp_s, inet_ntoa(*(struct in_addr *)ip));
    00445         sprintf(logmsg, "Found local IP address: %s", tmp_s);
    00446         logger(FINE, logmsg);
    00447         if (strcmp(tmp_s, "127.0.0.1") != 0 && !havePublicIP) {
    00448           strcpy(this -> myIP, tmp_s);
    00449           if (!isPrivateAddress(tmp_s))
    00450             havePublicIP = true;
    00451         }
    00452         strcpy(this -> allMyIPs[this -> numIPs], tmp_s);
    00453         this -> numIPs++;
    00454       }
    00455     }
    00456 #else
    00457         struct hostent *hptr;
    00458     if ((hptr = gethostbyname(myHostname))!= NULL) {
    00459       i = 0;
    00460           struct in_addr addr;
    00461           while ((hptr -> h_addr_list)[i] != NULL) {
    00462             memcpy(&(addr.s_addr), (hptr -> h_addr_list)[i], 4);
    00463         ipAddr = inet_ntoa(addr);
    00464             if (strcmp(ipAddr, "127.0.0.1") != 0) {
    00465               strcpy(this -> myIP, ipAddr);
    00466               if (!isPrivateAddress(ipAddr))
    00467                     break;
    00468                 }
    00469             i++;
    00470           }
    00471         }
    00472 #endif
    00473
    00474     this -> sysMonCluster = strdup("ApMon_SysMon");
    00475     this -> sysMonNode = strdup(this -> myIP);
    00476
    00477     this -> prvTime = 0;
    00478     this -> prvSent = 0;
    00479     this -> prvDrop = 0;
    00480     this -> crtTime = 0;
    00481     this -> crtSent = 0;
    00482     this -> crtDrop = 0;
    00483     this -> hWeight = exp(-5.0/60.0);
    00484
    00485     srand(time(NULL));
    00486
    00487     /* initialize buffer for XDR encoding */
    00488     this -> buf = (char *)malloc(MAX_DGRAM_SIZE);
    00489     if (this -> buf == NULL)
    00490       throw runtime_error("[ arrayInit() ] Error allocating memory");
    00491     this -> dgramSize = 0;
    00492
    00493     /*create the socket & set options*/
    00494     initSocket();
    00495
    00496     /* initialize the sender ID and the sequence number */
    00497     instance_id = rand();
    00498     seq_nr = 0;
    00499   }
    00500
    00501   /* put the destination addresses, ports & passwords in some temporary
    00502      buffers (because we don't want to lock mutex while making DNS
    00503      requests)
    00504   */
    00505   tmpNDestinations = 0;
    00506   tmpPorts = (int *)malloc(nDestinations * sizeof(int));
    00507   tmpAddresses = (char **)malloc(nDestinations * sizeof(char *));
    00508   tmpPasswds = (char **)malloc(nDestinations * sizeof(char *));
    00509   if (tmpPorts == NULL || tmpAddresses == NULL ||
    00510       tmpPasswds == NULL)
    00511     throw runtime_error("[ arrayInit() ] Error allocating memory");
    00512
    00513   for (i = 0; i < nDestinations; i++) {
    00514     try {
    00515       ipAddr = findIP(destAddresses[i]);
    00516     } catch (runtime_error &err) {
    00517       logger(FATAL, err.what());
    00518       continue;
    00519     }
    00520
    00521     /* make sure this address is not already in the list */
    00522     found = false;
    00523     for (j = 0; j < tmpNDestinations; j++) {
    00524       if (!strcmp(ipAddr, tmpAddresses[j])) {
    00525         found = true;
    00526         break;
    00527       }
    00528     }
    00529
    00530     /* add the address to the list */
    00531     if (!found) {
    00532       tmpAddresses[tmpNDestinations] = ipAddr;
    00533       tmpPorts[tmpNDestinations] = destPorts[i];
    00534       tmpPasswds[tmpNDestinations] = strdup(destPasswds[i]);
    00535
    00536       sprintf(logmsg, "Adding destination host: %s  - port %d",
    00537              tmpAddresses[tmpNDestinations], tmpPorts[tmpNDestinations]);
    00538       logger(INFO, logmsg);
    00539
    00540       tmpNDestinations++;
    00541     }
    00542   }
    00543
    00544   if (tmpNDestinations == 0) {
    00545     freeMat(tmpAddresses, tmpNDestinations);
    00546     freeMat(tmpPasswds, tmpNDestinations);
    00547     throw runtime_error("[ arrayInit() ] There is no destination host specified correctly!");
    00548   }
    00549
    00550   pthread_mutex_lock(&mutex);
    00551   if (!firstTime)
    00552       freeConf();
    00553   this -> nDestinations = tmpNDestinations;
    00554   this -> destAddresses = tmpAddresses;
    00555   this -> destPorts = tmpPorts;
    00556   this -> destPasswds = tmpPasswds;
    00557   pthread_mutex_unlock(&mutex);
    00558
    00559   /* start job/system monitoring according to the settings previously read
    00560      from the configuration file */
    00561   setJobMonitoring(jobMonitoring, jobMonitorInterval);
    00562   setSysMonitoring(sysMonitoring, sysMonitorInterval);
    00563   setGenMonitoring(genMonitoring, genMonitorIntervals);
    00564   setConfRecheck(confCheck, recheckInterval);
    00565 }
    00566
    00567
    00568 ApMon::~ApMon() {
    00569   int i;
    00570
    00571   if (bkThreadStarted) {
    00572     if (getJobMonitoring()) {
    00573       /* send a datagram with job monitoring information which covers
    00574          the last time interval */
    00575       sendJobInfo();
    00576     }
    00577   }
    00578
    00579   pthread_mutex_lock(&mutexBack);
    00580   setBackgroundThread(false);
    00581   pthread_mutex_unlock(&mutexBack);
    00582
    00583   pthread_mutex_destroy(&mutex);
    00584   pthread_mutex_destroy(&mutexBack);
    00585   pthread_mutex_destroy(&mutexCond);
    00586   pthread_cond_destroy(&confChangedCond);
    00587
    00588   free(clusterName);
    00589   free(nodeName);
    00590   free(sysMonCluster); free(sysMonNode);
    00591
    00592   freeConf();
    00593
    00594   free(monJobs);
    00595   for (i = 0; i < nInitSources; i++) {
    00596     free(initSources[i]);
    00597   }
    00598   free(initSources);
    00599
    00600   free(buf);
    00601 #ifndef WIN32
    00602   close(sockfd);
    00603 #else
    00604   closesocket(sockfd);
    00605   WSACleanup();
    00606 #endif
    00607 }
    00608
    00609 void ApMon::freeConf() {
    00610   int i;
    00611   freeMat(destAddresses, nDestinations);
    00612   freeMat(destPasswds, nDestinations);
    00613   free(destPorts);
    00614
    00615   for (i = 0; i < confURLs.nConfURLs; i++) {
    00616       free(confURLs.vURLs[i]);
    00617       free(confURLs.lastModifURLs[i]);
    00618   }
    00619 }
    00620
    00621 int ApMon::sendParameters(char *clusterName, char *nodeName,
    00622                int nParams, char **paramNames, int *valueTypes,
    00623                          char **paramValues) throw(runtime_error){
    00624  return sendTimedParameters(clusterName, nodeName, nParams,
    00625                             paramNames, valueTypes, paramValues, -1);
    00626 }
    00627
    00628 int ApMon::sendTimedParameters(char *clusterName, char *nodeName,
    00629                int nParams, char **paramNames, int *valueTypes,
    00630                char **paramValues, int timestamp) throw(runtime_error){
    00631   int i;
    00632   int ret, ret1, ret2;
    00633   char msg[100], buf2[MAX_HEADER_LENGTH+4], newBuf[MAX_DGRAM_SIZE];
    00634 #ifdef WIN32
    00635   char crtAddr[20];
    00636 #endif
    00637   char *headerTmp;
    00638   char header[MAX_HEADER_LENGTH] = "v:";
    00639   strcat(header, APMON_VERSION);
    00640   strcat(header, "_cpp"); // to indicate this is the C++ version
    00641   strcat(header, "p:");
    00642
    00643   pthread_mutex_lock(&mutex);
    00644
    00645   if(!shouldSend()) {
    00646      pthread_mutex_unlock(&mutex);
    00647      return RET_NOT_SENT;
    00648   }
    00649
    00650   if (clusterName != NULL) { // don't keep the cached values for cluster name
    00651     // and node name
    00652     free(this -> clusterName);
    00653     this -> clusterName = strdup(clusterName);
    00654
    00655     if (nodeName != NULL) {  /* the user provided a name */
    00656       free(this -> nodeName);
    00657       this -> nodeName = strdup(nodeName);
    00658     }
    00659     else { /* set the node name to the node's IP */
    00660       free(this -> nodeName);
    00661       this -> nodeName = strdup(this -> myHostname);
    00662     }  // else
    00663   } // if
    00664
    00665   if (this -> clusterName == NULL || this -> nodeName == NULL) {
    00666     pthread_mutex_unlock(&mutex);
    00667     throw runtime_error("[ sendTimedParameters() ] Null cluster name or node name");
    00668   }
    00669
    00670   //sortParams(nParams, paramNames, valueTypes, paramValues);
    00671
    00672   /* try to encode the parameters */
    00673   try {
    00674     encodeParams(nParams, paramNames, valueTypes, paramValues, timestamp);
    00675   } catch (runtime_error& err) {
    00676     pthread_mutex_unlock(&mutex);
    00677     throw err;
    00678   }
    00679
    00680   headerTmp = (char *)malloc(MAX_HEADER_LENGTH * sizeof(char));
    00681   /* for each destination */
    00682   for (i = 0; i < nDestinations; i++) {
    00683     XDR xdrs;
    00684     struct sockaddr_in destAddr;
    00685
    00686     /* initialize the destination address */
    00687     memset(&destAddr, 0, sizeof(destAddr));
    00688     destAddr.sin_family = AF_INET;
    00689     destAddr.sin_port = htons(destPorts[i]);
    00690 #ifndef WIN32
    00691     inet_pton(AF_INET, destAddresses[i], &destAddr.sin_addr);
    00692 #else
    00693     int dummy = sizeof(destAddr);
    00694     sprintf(crtAddr, "%s:%d", destAddresses[i], destPorts[i]);
    00695     ret = WSAStringToAddress(crtAddr, AF_INET, NULL, (struct sockaddr *) &destAddr, &dummy);
    00696     if(ret){
    00697       ret = WSAGetLastError();
    00698       sprintf(msg, "[ sendTimedParameters() ] Error packing address %s, code %d ", crtAddr, ret);
    00699       throw runtime_error(msg);
    00700     }
    00701 #endif
    00702     /* add the header (which is different for each destination) */
    00703
    00704     strcpy(headerTmp, header);
    00705     strcat(headerTmp, destPasswds[i]);
    00706
    00707     /* initialize the XDR stream to encode the header */
    00708     xdrmem_create(&xdrs, buf2, MAX_HEADER_LENGTH, XDR_ENCODE);
    00709
    00710     /* encode the header */
    00711     ret = xdr_string(&xdrs, &(headerTmp), strlen(headerTmp) + 1);
    00712     /* add the instance ID and the sequence number */
    00713     ret1 = xdr_int(&xdrs, &(instance_id));
    00714     ret2 = xdr_int(&xdrs, &(seq_nr));
    00715
    00716     if (!ret || !ret1 || !ret2) {
    00717       free(headerTmp);
    00718           pthread_mutex_unlock(&mutex);
    00719       throw runtime_error("[ sendTimedParameters() ] XDR encoding error for the header");
    00720     }
    00721
    00722     /* concatenate the header and the rest of the datagram */
    00723     int buf2Length = xdrSize(XDR_STRING, headerTmp) + 2 * xdrSize(XDR_INT32, NULL);
    00724     memcpy(newBuf, buf2, buf2Length);
    00725     memcpy(newBuf + buf2Length, buf, dgramSize);
    00726
    00727     /* send the buffer */
    00728     ret = sendto(sockfd, newBuf, dgramSize + buf2Length, 0,
    00729                  (struct sockaddr *)&destAddr, sizeof(destAddr));
    00730     if (ret == RET_ERROR) {
    00731       free(headerTmp);
    00732       pthread_mutex_unlock(&mutex);
    00733
    00734       /*re-initialize the socket */
    00735 #ifndef WIN32
    00736       close(sockfd);
    00737 #else
    00738       closesocket(sockfd);
    00739 #endif
    00740       initSocket();
    00741
    00742       /* throw exception because the datagram was not sent */
    00743       sprintf(msg, "[ sendTimedParameters() ] Error sending data to destination %s ",
    00744               destAddresses[i]);
    00745       throw runtime_error(msg);
    00746     }
    00747     else {
    00748       sprintf(msg, "Datagram with size %d, instance id %d, sequence number %d, sent to %s, containing parameters:",
    00749              ret, instance_id, seq_nr, destAddresses[i]);
    00750       logger(FINE, msg);
    00751       logParameters(FINE, nParams, paramNames, valueTypes, paramValues);
    00752     }
    00753     xdr_destroy(&xdrs);
    00754
    00755   }
    00756
    00757   seq_nr = (seq_nr + 1) % TWO_BILLION;
    00758   free(headerTmp);
    00759   pthread_mutex_unlock(&mutex);
    00760   return RET_SUCCESS;
    00761 }
    00762
    00763
    00764 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00765                         char *paramName, int valueType, char *paramValue)
    00766  throw(runtime_error){
    00767
    00768   return sendParameters(clusterName, nodeName, 1, &paramName,
    00769                               &valueType, &paramValue);
    00770 }
    00771
    00772 int ApMon::sendTimedParameter(char *clusterName, char *nodeName,
    00773               char *paramName, int valueType, char *paramValue, int timestamp)
    00774  throw(runtime_error){
    00775
    00776   return sendTimedParameters(clusterName, nodeName, 1, &paramName,
    00777                               &valueType, &paramValue, timestamp);
    00778 }
    00779
    00780 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00781                 char *paramName, int paramValue) throw(runtime_error) {
    00782
    00783   return sendParameter(clusterName, nodeName, paramName, XDR_INT32,
    00784                     (char *)&paramValue);
    00785 }
    00786
    00787 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00788                 char *paramName, float paramValue) throw(runtime_error) {
    00789
    00790   return sendParameter(clusterName, nodeName, paramName, XDR_REAL32,
    00791                     (char *)&paramValue);
    00792 }
    00793
    00794 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00795                 char *paramName, double paramValue) throw(runtime_error) {
    00796
    00797   return sendParameter(clusterName, nodeName, paramName, XDR_REAL64,
    00798                     (char *)&paramValue);
    00799 }
    00800
    00801 int ApMon::sendParameter(char *clusterName, char *nodeName,
    00802                 char *paramName, char *paramValue) throw(runtime_error) {
    00803
    00804   return sendParameter(clusterName, nodeName, paramName, XDR_STRING,
    00805                     paramValue);
    00806 }
    00807
    00808 void ApMon::encodeParams(int nParams, char **paramNames, int *valueTypes,
    00809                         char **paramValues, int timestamp)
    00810   throw(runtime_error){
    00811   XDR xdrs; /* XDR handle. */
    00812   int i, effectiveNParams;
    00813
    00814   /* count the number of parameters actually sent in the datagram
    00815      (the parameters with a NULL name and the string parameters
    00816      with a NULL value are skipped)
    00817   */
    00818   effectiveNParams = nParams;
    00819   for (i = 0; i < nParams; i++) {
    00820       if (paramNames[i] == NULL || (valueTypes[i] == XDR_STRING &&
    00821                                     paramValues[i] == NULL)) {
    00822         effectiveNParams--;
    00823       }
    00824   }
    00825   if (effectiveNParams == 0)
    00826       throw runtime_error("[ encodeParams() ] No valid parameters in datagram, sending aborted");
    00827
    00828   /*** estimate the length of the send buffer ***/
    00829
    00830   /* add the length of the cluster name & node name */
    00831   dgramSize =  xdrSize(XDR_STRING, clusterName) +
    00832       xdrSize(XDR_STRING, nodeName) + xdrSize(XDR_INT32, NULL);
    00833   /* add the lengths for the parameters (name + size + value) */
    00834   for (i = 0; i < nParams; i++) {
    00835     dgramSize += xdrSize(XDR_STRING, paramNames[i]) +  xdrSize(XDR_INT32, NULL) +
    00836       + xdrSize(valueTypes[i], paramValues[i]);
    00837   }
    00838
    00839   /* check that the maximum datagram size is not exceeded */
    00840   if (dgramSize + MAX_HEADER_LENGTH > MAX_DGRAM_SIZE)
    00841     throw runtime_error("[ encodeParams() ] Maximum datagram size exceeded");
    00842
    00843   /* initialize the XDR stream */
    00844   xdrmem_create(&xdrs, buf, MAX_DGRAM_SIZE, XDR_ENCODE);
    00845
    00846   try {
    00847     /* encode the cluster name, the node name and the number of parameters */
    00848     if (!xdr_string(&xdrs, &(clusterName), strlen(clusterName)
    00849                     + 1))
    00850       throw runtime_error("[ encodeParams() ] XDR encoding error for the cluster name");
    00851
    00852     if (!xdr_string(&xdrs, &(nodeName), strlen(nodeName) + 1))
    00853       throw runtime_error("[ encodeParams() ] XDR encoding error for the node name");
    00854
    00855     if (!xdr_int(&xdrs, &(effectiveNParams)))
    00856       throw runtime_error("[ encodeParams() ] XDR encoding error for the number of parameters");
    00857
    00858     /* encode the parameters */
    00859     for (i = 0; i < nParams; i++) {
    00860       if (paramNames[i] == NULL || (valueTypes[i] == XDR_STRING &&
    00861                                     paramValues[i] == NULL)) {
    00862         logger(WARNING, "NULL parameter name or value - skipping parameter...");
    00863         continue;
    00864       }
    00865
    00866       /* parameter name */
    00867       if (!xdr_string(&xdrs, &(paramNames[i]), strlen(paramNames[i]) + 1))
    00868         throw runtime_error("[ encodeParams() ] XDR encoding error for parameter name");
    00869
    00870       /* parameter value type */
    00871       if (!xdr_int(&xdrs, &(valueTypes[i])))
    00872         throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value type");
    00873
    00874       /* parameter value */
    00875       switch (valueTypes[i]) {
    00876       case XDR_STRING:
    00877         if (!xdr_string(&xdrs, &(paramValues[i]),
    00878                         strlen(paramValues[i]) + 1))
    00879           throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00880         break;
    00881         //INT16 is not supported
    00882         /*    case XDR_INT16:
    00883               if (!xdr_short(&xdrs, (short *)(paramValues[i])))
    00884               return RET_ERROR;
    00885               break;
    00886         */    case XDR_INT32:
    00887                 if (!xdr_int(&xdrs, (int *)(paramValues[i])))
    00888                   throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00889                 break;
    00890       case XDR_REAL32:
    00891         if (!xdr_float(&xdrs, (float *)(paramValues[i])))
    00892           throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00893         break;
    00894       case XDR_REAL64:
    00895         if (!xdr_double(&xdrs, (double *)(paramValues[i])))
    00896           throw runtime_error("[ encodeParams() ] XDR encoding error for parameter value");
    00897         break;
    00898       default:
    00899         throw runtime_error("[ encodeParams() ] Unknown type for XDR encoding");
    00900       }
    00901     }
    00902
    00903     /* encode the timestamp if necessary */
    00904     if (timestamp > 0) {
    00905       if (!xdr_int(&xdrs, &timestamp))
    00906         throw runtime_error("[ encodeParams() ] XDR encoding error for the timestamp");
    00907       dgramSize += xdrSize(XDR_INT32, NULL);
    00908     }
    00909   } catch (runtime_error& err) {
    00910     xdr_destroy(&xdrs);
    00911     throw err;
    00912   }
    00913
    00914   xdr_destroy(&xdrs);
    00915 }
    00916
    00917 #ifndef WIN32
    00918 void *bkTask(void *param) {
    00919 #else
    00920 DWORD WINAPI bkTask(void *param) {
    00921 #endif
    00922   struct stat st;
    00923 #ifndef WIN32
    00924   struct timespec delay;
    00925 #else
    00926   DWORD delay;
    00927 #endif
    00928   bool resourceChanged, haveChange;
    00929   int nextOp = -1, i, ret;
    00930   int generalInfoCount;
    00931   time_t crtTime, timeRemained;
    00932   time_t nextRecheck = 0, nextJobInfoSend = 0, nextSysInfoSend = 0;
    00933   ApMon *apm = (ApMon *)param;
    00934   char logmsg[200];
    00935
    00936   logger(INFO, "[Starting background thread...]");
    00937   apm -> bkThreadStarted = true;
    00938
    00939   crtTime = time(NULL);
    00940
    00941   pthread_mutex_lock(&(apm -> mutexBack));
    00942   if (apm -> confCheck) {
    00943     nextRecheck = crtTime + apm -> crtRecheckInterval;
    00944     //sprintf(logmsg, "###1 crt %ld interv %ld recheck %ld ", crtTime,
    00945     //   apm -> crtRecheckInterval, nextRecheck);
    00946     //logger(FINE, logmsg);
    00947     //fflush(stdout);
    00948   }
    00949   if (apm -> jobMonitoring)
    00950     nextJobInfoSend = crtTime + apm -> jobMonitorInterval;
    00951   if (apm -> sysMonitoring)
    00952     nextSysInfoSend = crtTime + apm -> sysMonitorInterval;
    00953   pthread_mutex_unlock(&(apm -> mutexBack));
    00954
    00955   timeRemained = -1;
    00956   generalInfoCount = 0;
    00957
    00958   while (1) {
    00959     pthread_mutex_lock(&apm -> mutexBack);
    00960     if (apm -> stopBkThread) {
    00961 //      printf("### stopBkThread \n");
    00962       pthread_mutex_unlock(&apm -> mutexBack);
    00963       break;
    00964     }
    00965     pthread_mutex_unlock(&apm -> mutexBack);
    00966
    00967     //sprintf(logmsg, "### 2 recheck %ld sys %ld ", nextRecheck,
    00968     //    nextSysInfoSend);
    00969     //logger(FINE, logmsg);
    00970
    00971     /* determine the next operation that must be performed */
    00972     if (nextRecheck > 0 && (nextJobInfoSend <= 0 ||
    00973                             nextRecheck <= nextJobInfoSend)) {
    00974       if (nextSysInfoSend <= 0 || nextRecheck <= nextSysInfoSend) {
    00975         nextOp = RECHECK_CONF;
    00976         timeRemained = nextRecheck - crtTime;
    00977       } else {
    00978         nextOp = SYS_INFO_SEND;
    00979         timeRemained = nextSysInfoSend - crtTime;
    00980       }
    00981     } else {
    00982       if (nextJobInfoSend > 0 && (nextSysInfoSend <= 0 ||
    00983                                   nextJobInfoSend <= nextSysInfoSend)) {
    00984         nextOp = JOB_INFO_SEND;
    00985         timeRemained = nextJobInfoSend - crtTime;
    00986       } else if (nextSysInfoSend > 0) {
    00987         nextOp = SYS_INFO_SEND;
    00988         timeRemained = nextSysInfoSend - crtTime;
    00989       }
    00990     }
    00991
    00992     if (timeRemained == -1)
    00993       timeRemained = RECHECK_INTERVAL;
    00994
    00995 #ifndef WIN32
    00996     /* the moment when the next operation should be performed */
    00997     delay.tv_sec = crtTime + timeRemained;
    00998     delay.tv_nsec = 0;
    00999 #else
    01000     delay = (/*crtTime +*/ timeRemained) * 1000;  // this is in millis
    01001 #endif
    01002
    01003     pthread_mutex_lock(&(apm -> mutexBack));
    01004
    01005     pthread_mutex_lock(&(apm -> mutexCond));
    01006     /* check for changes in the settings */
    01007     haveChange = false;
    01008     if (apm -> jobMonChanged || apm -> sysMonChanged || apm -> recheckChanged)
    01009       haveChange = true;
    01010     if (apm -> jobMonChanged) {
    01011       if (apm -> jobMonitoring)
    01012         nextJobInfoSend = crtTime + apm -> jobMonitorInterval;
    01013       else
    01014         nextJobInfoSend = -1;
    01015       apm -> jobMonChanged = false;
    01016     }
    01017     if (apm -> sysMonChanged) {
    01018       if (apm -> sysMonitoring)
    01019         nextSysInfoSend = crtTime + apm -> sysMonitorInterval;
    01020       else
    01021         nextSysInfoSend = -1;
    01022       apm -> sysMonChanged = false;
    01023     }
    01024     if (apm -> recheckChanged) {
    01025       if (apm -> confCheck) {
    01026         nextRecheck = crtTime + apm -> crtRecheckInterval;
    01027       }
    01028       else
    01029         nextRecheck = -1;
    01030       apm -> recheckChanged = false;
    01031     }
    01032     pthread_mutex_unlock(&(apm -> mutexBack));
    01033
    01034     if (haveChange) {
    01035       pthread_mutex_unlock(&(apm -> mutexCond));
    01036       continue;
    01037     }
    01038
    01039     /* wait until the next operation should be performed or until
    01040        a change in the settings occurs */
    01041 #ifndef WIN32
    01042     ret = pthread_cond_timedwait(&(apm -> confChangedCond),
    01043                                 &(apm -> mutexCond), &delay);
    01044     pthread_mutex_unlock(&(apm -> mutexCond));
    01045 #else
    01046     pthread_mutex_unlock(&(apm -> mutexCond));
    01047     ret = WaitForSingleObject(apm->confChangedCond, delay);
    01048 #endif
    01049     if (ret == ETIMEDOUT) {
    01050 //      printf("### ret TIMEDOUT\n");
    01051       /* now perform the operation */
    01052       if (nextOp == JOB_INFO_SEND) {
    01053         apm -> sendJobInfo();
    01054         crtTime = time(NULL);
    01055         nextJobInfoSend = crtTime + apm -> getJobMonitorInterval();
    01056       }
    01057
    01058       if (nextOp == SYS_INFO_SEND) {
    01059         apm -> sendSysInfo();
    01060         if (apm -> getGenMonitoring()) {
    01061           if (generalInfoCount <= 1)
    01062             apm -> sendGeneralInfo();
    01063           generalInfoCount = (generalInfoCount + 1) % apm -> genMonitorIntervals;
    01064         }
    01065         crtTime = time(NULL);
    01066         nextSysInfoSend = crtTime + apm -> getSysMonitorInterval();
    01067       }
    01068
    01069       if (nextOp == RECHECK_CONF) {
    01070         //logger(FINE, "### recheck conf");
    01071         resourceChanged = false;
    01072         try {
    01073           if (apm -> initType == FILE_INIT) {
    01074             sprintf(logmsg, "Checking for modifications for file %s ",
    01075                     apm -> initSources[0]);
    01076             logger(INFO, logmsg);
    01077             stat(apm -> initSources[0], &st);
    01078             if (st.st_mtime > apm -> lastModifFile) {
    01079               sprintf(logmsg, "File %s modified ", apm -> initSources[0]);
    01080               logger(INFO, logmsg);
    01081               resourceChanged = true;
    01082             }
    01083           }
    01084
    01085           // check the configuration URLs
    01086           for (i = 0; i < apm -> confURLs.nConfURLs; i++) {
    01087             sprintf(logmsg, "[Checking for modifications for URL %s ] ",
    01088                    apm -> confURLs.vURLs[i]);
    01089             logger(INFO, logmsg);
    01090             if (urlModified(apm -> confURLs.vURLs[i], apm -> confURLs.lastModifURLs[i])) {
    01091               sprintf(logmsg, "URL %s modified ", apm -> confURLs.vURLs[i]);
    01092               logger(INFO, logmsg);
    01093               resourceChanged = true;
    01094               break;
    01095             }
    01096           }
    01097
    01098           if (resourceChanged) {
    01099             logger(INFO, "Reloading configuration...");
    01100             if (apm -> initType == FILE_INIT)
    01101               apm -> initialize(apm -> initSources[0], false);
    01102             else
    01103               apm -> initialize(apm -> nInitSources, apm -> initSources, false);
    01104           }
    01105           apm -> setCrtRecheckInterval(apm -> getRecheckInterval());
    01106         } catch (runtime_error &err) {
    01107           logger(WARNING, err.what());
    01108           logger(WARNING, "Increasing the time interval for reloading the configuration...");
    01109           apm -> setCrtRecheckInterval(apm -> getRecheckInterval() * 5);
    01110         }
    01111         crtTime = time(NULL);
    01112         nextRecheck = crtTime + apm -> getCrtRecheckInterval();
    01113         //sleep(apm -> getCrtRecheckInterval());
    01114       }
    01115     }
    01116
    01117   } // while
    01118
    01119 #ifndef WIN32
    01120   return NULL; // it doesn't matter what we return here
    01121 #else
    01122   return 0;
    01123 #endif
    01124 }
    01125
    01126 void ApMon::setConfRecheck(bool confCheck, long interval) {
    01127   char logmsg[100];
    01128   if (confCheck) {
    01129     sprintf(logmsg, "Enabling configuration reloading (interval %ld)",
    01130             interval);
    01131     logger(INFO, logmsg);
    01132   }
    01133
    01134   pthread_mutex_lock(&mutexBack);
    01135   if (initType == DIRECT_INIT) { // no need to reload the configuration
    01136     logger(WARNING, "[ setConfRecheck() } No configuration file/URL to reload.");
    01137     return;
    01138   }
    01139
    01140   this -> confCheck = confCheck;
    01141   this -> recheckChanged = true;
    01142   if (confCheck) {
    01143     if (interval > 0) {
    01144       this -> recheckInterval = interval;
    01145       this -> crtRecheckInterval = interval;
    01146     } else {
    01147       this -> recheckInterval = RECHECK_INTERVAL;
    01148       this -> crtRecheckInterval = RECHECK_INTERVAL;
    01149     }
    01150     setBackgroundThread(true);
    01151   }
    01152   else {
    01153     if (jobMonitoring == false && sysMonitoring == false)
    01154       setBackgroundThread(false);
    01155   }
    01156   pthread_mutex_unlock(&mutexBack);
    01157
    01158 }
    01159
    01160 void ApMon::setRecheckInterval(long val) {
    01161   if (val > 0) {
    01162     setConfRecheck(true, val);
    01163   }
    01164   else {
    01165     setConfRecheck(false, val);
    01166   }
    01167 }
    01168
    01169 void ApMon::setCrtRecheckInterval(long val) {
    01170   pthread_mutex_lock(&mutexBack);
    01171   crtRecheckInterval = val;
    01172   pthread_mutex_unlock(&mutexBack);
    01173 }
    01174
    01175 void ApMon::setJobMonitoring(bool jobMonitoring, long interval) {
    01176   char logmsg[100];
    01177   if (jobMonitoring) {
    01178     sprintf(logmsg, "Enabling job monitoring, time interval %ld s... ", interval);
    01179     logger(INFO, logmsg);
    01180   } else
    01181     logger(INFO, "Disabling job monitoring...");
    01182
    01183   pthread_mutex_lock(&mutexBack);
    01184   this -> jobMonitoring = jobMonitoring;
    01185   this -> jobMonChanged = true;
    01186   if (jobMonitoring == true) {
    01187     if (interval > 0)
    01188       this -> jobMonitorInterval = interval;
    01189     else
    01190       this -> jobMonitorInterval = JOB_MONITOR_INTERVAL;
    01191     setBackgroundThread(true);
    01192   } else {
    01193     // disable the background thread if it is not needed anymore
    01194     if (this -> sysMonitoring == false && this -> confCheck == false)
    01195       setBackgroundThread(false);
    01196   }
    01197   pthread_mutex_unlock(&mutexBack);
    01198 }
    01199
    01200 void ApMon::setSysMonitoring(bool sysMonitoring, long interval) {
    01201   char logmsg[100];
    01202   if (sysMonitoring) {
    01203     sprintf(logmsg, "Enabling system monitoring, time interval %ld s... ", interval);
    01204     logger(INFO, logmsg);
    01205   } else
    01206     logger(INFO, "Disabling system monitoring...");
    01207
    01208   pthread_mutex_lock(&mutexBack);
    01209   this -> sysMonitoring = sysMonitoring;
    01210   this -> sysMonChanged = true;
    01211   if (sysMonitoring == true) {
    01212     if (interval > 0)
    01213       this -> sysMonitorInterval = interval;
    01214     else
    01215       this -> sysMonitorInterval = SYS_MONITOR_INTERVAL;
    01216     setBackgroundThread(true);
    01217   }  else {
    01218     // disable the background thread if it is not needed anymore
    01219     if (this -> jobMonitoring == false && this -> confCheck == false)
    01220       setBackgroundThread(false);
    01221   }
    01222   pthread_mutex_unlock(&mutexBack);
    01223 }
    01224
    01225 void ApMon::setGenMonitoring(bool genMonitoring, int nIntervals) {
    01226   char logmsg[100];
    01227   sprintf(logmsg, "Setting general information monitoring to %s ",
    01228          boolStrings[(int)genMonitoring]);
    01229   logger(INFO, logmsg);
    01230
    01231   pthread_mutex_lock(&mutexBack);
    01232   this -> genMonitoring = genMonitoring;
    01233   this -> sysMonChanged = true;
    01234   if (genMonitoring == true) {
    01235     if (nIntervals > 0)
    01236       this -> genMonitorIntervals = nIntervals;
    01237     else
    01238       this -> genMonitorIntervals = GEN_MONITOR_INTERVALS;
    01239
    01240     if (this -> sysMonitoring == false) {
    01241       pthread_mutex_unlock(&mutexBack);
    01242       setSysMonitoring(true);
    01243       pthread_mutex_lock(&mutexBack);
    01244     }
    01245   } // TODO: else check if we can stop the background thread (if no
    01246   // system parameters are enabled for monitoring)
    01247   pthread_mutex_unlock(&mutexBack);
    01248 }
    01249
    01250 void ApMon::setBackgroundThread(bool val) {
    01251   // mutexBack is locked
    01252   if (val == true) {
    01253     if (!haveBkThread) {
    01254 #ifndef WIN32
    01255       pthread_create(&bkThread, NULL, &bkTask, this);
    01256 #else
    01257       DWORD dummy;
    01258       bkThread = CreateThread(NULL, 65536, &bkTask, this, 0, &dummy);
    01259 #endif
    01260       haveBkThread = true;
    01261     } else {
    01262       pthread_mutex_lock(&mutexCond);
    01263       pthread_cond_signal(&confChangedCond);
    01264       pthread_mutex_unlock(&mutexCond);
    01265     }
    01266   }
    01267   if (val == false) {
    01268     //if (bkThreadStarted) {
    01269     if (haveBkThread) {
    01270       stopBkThread = true;
    01271       pthread_mutex_unlock(&mutexBack);
    01272 #ifndef WIN32
    01273       pthread_mutex_lock(&mutexCond);
    01274 #endif
    01275       pthread_cond_signal(&confChangedCond);
    01276       logger(INFO, "[Stopping the background thread...]");
    01277 #ifndef WIN32
    01278       pthread_mutex_unlock(&mutexCond);
    01279       pthread_join(bkThread, NULL);
    01280 #else
    01281       WaitForSingleObject(bkThread, INFINITE);
    01282 #endif
    01283       pthread_mutex_lock(&mutexBack);
    01284 //      logger(INFO, "bk thread stopped!");
    01285       haveBkThread = false;
    01286       bkThreadStarted = false;
    01287       stopBkThread = false;
    01288     }
    01289   }
    01290 }
    01291
    01292 void ApMon::addJobToMonitor(long pid, char *workdir, char *clusterName,
    01293                             char *nodeName) throw(runtime_error) {
    01294   if (nMonJobs >= MAX_MONITORED_JOBS)
    01295     throw runtime_error("[ addJobToMonitor() ] Maximum number of jobs that can be monitored exceeded.");
    01296   MonitoredJob job;
    01297   job.pid = pid;
    01298   if (workdir == NULL)
    01299     strcpy(job.workdir, "");
    01300   else
    01301     strcpy(job.workdir, workdir);
    01302
    01303  if (clusterName == NULL || strlen(clusterName) == 0)
    01304     strcpy(job.clusterName, "ApMon_JobMon");
    01305   else
    01306     strcpy(job.clusterName, clusterName);
    01307  if (nodeName == NULL || strlen(nodeName) == 0)
    01308     strcpy(job.nodeName, this -> myIP);
    01309   else
    01310     strcpy(job.nodeName, nodeName);
    01311
    01312   monJobs[nMonJobs++] = job;
    01313 }
    01314
    01315 void ApMon::removeJobToMonitor(long pid) throw(runtime_error) {
    01316   int i, j;
    01317   char msg[100];
    01318
    01319   if (nMonJobs <= 0)
    01320     throw runtime_error("[ removeJobToMonitor() ] There are no monitored jobs.");
    01321
    01322   for (i = 0; i < nMonJobs; i++) {
    01323     if (monJobs[i].pid == pid) {
    01324       /* found the job, now remove it */
    01325       for (j = i; j < nMonJobs - 1; j++)
    01326         monJobs[j] = monJobs[j + 1];
    01327       nMonJobs--;
    01328       return;
    01329     }
    01330   }
    01331
    01332   /* the job was not found */
    01333   sprintf(msg, "removeJobToMonitor(): Job %ld not found.", pid);
    01334   throw runtime_error(msg);
    01335 }
    01336
    01337 void ApMon::setSysMonClusterNode(char *clusterName, char *nodeName) {
    01338   free (sysMonCluster); free(sysMonNode);
    01339   sysMonCluster = strdup(clusterName);
    01340   sysMonNode = strdup(nodeName);
    01341 }
    01342
    01343 void ApMon::setLogLevel(char *newLevel_s) {
    01344   int newLevel;
    01345   const char *levels[5] = {"FATAL", "WARNING", "INFO", "FINE", "DEBUG"};
    01346   char logmsg[100];
    01347
    01348   for (newLevel = 0; newLevel < 5; newLevel++)
    01349     if (strcmp(newLevel_s, levels[newLevel]) == 0)
    01350       break;
    01351
    01352   if (newLevel >= 5) {
    01353     sprintf(logmsg, "[ setLogLevel() ] Invalid level value: %s", newLevel_s);
    01354     logger(WARNING, logmsg);
    01355   }
    01356   else
    01357     logger(0, NULL, newLevel);
    01358 }
    01359
    01360
    01361 void ApMon::setMaxMsgRate(int maxRate) {
    01362   if (maxRate > 0)
    01363     this -> maxMsgRate  = maxRate;
    01364 }
    01365
    01366 void ApMon::initSocket() throw(runtime_error) {
    01367   int optval1 = 1;
    01368   struct timeval optval2;
    01369   int ret1, ret2, ret3;
    01370
    01371   sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    01372   if (sockfd < 0)
    01373     throw runtime_error("[ initSocket() ] Error creating socket");
    01374   ret1 = setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *) &optval1,
    01375                     sizeof(optval1));
    01376
    01377   /* set connection timeout */
    01378   optval2.tv_sec = 20;
    01379   optval2.tv_usec = 0;
    01380   ret2 = setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, (char *) &optval2,
    01381                     sizeof(optval2));
    01382   ret3 = setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (char *) &optval2,
    01383                     sizeof(optval2));
    01384   if (ret1 != 0 || ret2 != 0 || ret3 != 0)
    01385     throw runtime_error("[ initSocket() ] Error initializing socket.");
    01386 }
    01387
    01388
    01389 void ApMon::parseConf(FILE *fp, int *nDestinations, char **destAddresses,
    01390                      int *destPorts, char **destPasswds)
    01391   throw(runtime_error) {
    01392   int i, ch;
    01393   char *line = (char *)malloc ((MAX_STRING_LEN1) * sizeof(char));
    01394   char *tmp = NULL;
    01395   char *loglevel_s;
    01396 //  char sbuf[30];
    01397 //  char *pbuf = sbuf;
    01398
    01399   /* parse the input file */
    01400   while(fgets(line, MAX_STRING_LEN, fp) != NULL) {
    01401
    01402     if (tmp != NULL) {
    01403       free(tmp);
    01404       tmp = NULL;
    01405     }
    01406
    01407     line[MAX_STRING_LEN - 1] = 0;
    01408     /* check if the line was too long */
    01409     ch = fgetc(fp); // see if we are at the end of the file
    01410     ungetc(ch, fp);
    01411     if (line[strlen(line) - 1] != 10 && ch != EOF) {
    01412       /* if the line doesn't end with a \n and we are not at the end
    01413          of file, the line from the file was longer than MAX_STRING_LEN */
    01414       fclose(fp);
    01415       throw runtime_error ("[ parseConf() ] Maximum line length exceeded in the conf file");
    01416     }
    01417
    01418     tmp = trimString(line);
    01419
    01420     /* skip the blank lines and the comment lines */
    01421     if (strlen(tmp) == 0 || strchr(tmp, '#') == tmp)
    01422       continue;
    01423
    01424     if (strstr(tmp, "xApMon_loglevel") == tmp) {
    01425       char *tmp2 = tmp;
    01426       strtok/*_r*/(tmp2, "= ");//, &pbuf);
    01427       loglevel_s = strtok/*_r*/(NULL, "= ");//, &pbuf);
    01428       setLogLevel(loglevel_s);
    01429       continue;
    01430     }
    01431
    01432     if (strstr(tmp, "xApMon_") == tmp) {
    01433       parseXApMonLine(tmp);
    01434       continue;
    01435     }
    01436
    01437     if (*nDestinations >= MAX_N_DESTINATIONS) {
    01438       free(line); free(tmp);
    01439       for (i = 0; i < *nDestinations; i++) {
    01440         free(destAddresses[i]);
    01441         free(destPasswds[i]);
    01442       }
    01443       fclose(fp);
    01444       throw runtime_error("[ parseConf() ] Maximum number of destinations exceeded.");
    01445     }
    01446
    01447     addToDestinations(tmp, nDestinations, destAddresses, destPorts,
    01448                       destPasswds);
    01449   }
    01450
    01451   if (tmp != NULL)
    01452     free(tmp);
    01453   free(line);
    01454 }
    01455
    01456 bool ApMon::shouldSend() {
    01457
    01458   long now = time(NULL);
    01459   bool doSend;
    01460   char msg[200];
    01461
    01462   //printf("now %ld crtTime %ld\n", now, crtTime);
    01463
    01464   if (now != crtTime){
    01466     prvSent = hWeight * prvSent + (1.0 - hWeight) * crtSent / (now - crtTime);
    01467     prvTime = crtTime;
    01468     sprintf(msg, "previously sent: %ld dropped: %ld", crtSent, crtDrop);
    01469     logger(DEBUG, msg);
    01471     crtTime = now;
    01472     crtSent = 0;
    01473     crtDrop = 0;
    01474     //printf("\n");
    01475   }
    01476
    01478   int valSent = (int)(prvSent * hWeight + crtSent * (1.0 - hWeight));
    01479
    01480   doSend = true;
    01482   int level = this -> maxMsgRate - this -> maxMsgRate / 10;
    01483
    01484
    01485   if (valSent > (this -> maxMsgRate - level)) {
    01486     //int max10 = this -> maxMsgRate / 10;
    01487     int rnd  = rand() % (this -> maxMsgRate / 10);
    01488     doSend = (rnd <  (this -> maxMsgRate - valSent));
    01489   }
    01491   if (doSend) {
    01492     crtSent++;
    01493     //printf("#");
    01494   } else {
    01495     crtDrop++;
    01496     //printf(".");
    01497   }
    01498
    01499   return doSend;
    01500 }
    01501
    01502
    01503
    01504
    01505

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