#include <DQMMonitoringService.h>

Public Member Functions
	DQMMonitoringService (const edm::ParameterSet &, edm::ActivityRegistry &)

void	registerExtra (std::string name, ptree data)

void	reportEvents (int nevts)

void	reportLumiSection (int run, int lumi)

	~DQMMonitoringService ()

Private Member Functions
void	fillProcessInfoCmdline ()

void	fillProcessInfoStatus ()

std::string	hackoutTheStdErr ()

void	reportLumiSectionUnsafe (int run, int lumi)

Private Attributes
ptree	extra_

int	fseq_

std::string	hostname_

boost::filesystem::path	json_path_

long	last_report_nevents_

std::chrono::high_resolution_clock::time_point	last_report_time_

long	nevents_

ptree	ps_info_

std::string	tag_

Detailed Description

Definition at line 37 of file DQMMonitoringService.h.

Constructor & Destructor Documentation

dqmservices::DQMMonitoringService::DQMMonitoringService	(	const edm::ParameterSet &	pset,
		edm::ActivityRegistry &
	)

Definition at line 18 of file DQMMonitoringService.cc.

References edm::hlt::Exception, fillProcessInfoCmdline(), fseq_, edm::ParameterSet::getUntrackedParameter(), query::host, hostname_, json_path_, AlCaHLTBitMon_QueryRunRegistry::string, and tag_.

                                                                                             {
   json_path_ = pset.getUntrackedParameter<std::string>("jsonPath");
 
   char host[128];
   if (gethostname(host ,sizeof(host)) == -1) {
     throw cms::Exception("DQMMonitoringService")
           << "Internal error, cannot get host name";
   }
 
   hostname_ = host;
   fseq_ = 0;
   tag_ = "";
 
   try {
     fillProcessInfoCmdline();
   } catch (...) {
     // pass
   }
 }

dqmservices::DQMMonitoringService::~DQMMonitoringService ( )

Definition at line 38 of file DQMMonitoringService.cc.

38 {

39 }

Member Function Documentation

void dqmservices::DQMMonitoringService::fillProcessInfoCmdline ( )

private

Definition at line 125 of file DQMMonitoringService.cc.

References end, AlCaHLTBitMon_ParallelJobs::p, ps_info_, SiPixelLorentzAngle_cfi::read, AlCaHLTBitMon_QueryRunRegistry::string, and tag_.

Referenced by DQMMonitoringService().

                                                   {
   int fd = open("/proc/self/cmdline", O_RDONLY);
   ptree cmdline;
 
   if (fd != -1) {
     unsigned char buf[1024];
     int nbytesread = read(fd, buf, 1024);
 
     // make last character zero
     // in case we have read less than buf
     if (nbytesread > 0)
       buf[nbytesread-1] = 0;
 
     unsigned char *end = buf + nbytesread;
     for (unsigned char *p = buf; p < end; ) {
       std::string token((char *)p);
       ptree child;
       child.put("", token);
       cmdline.push_back(std::make_pair("", child));
 
       if ((tag_.size() == 0) &&
           (token.find(".py") != std::string::npos)) {
 
         // a hack to set the tag until we figure
         // out how to set it properly
         tag_ = token;
         boost::replace_last(tag_, ".py", "");
         boost::replace_last(tag_, "_cfg", "");
       }
 
       while (*p++); // skip until start of next 0-terminated section
     }
     close(fd);
   }
 
   ps_info_.put_child("cmdline", cmdline);
 }

void dqmservices::DQMMonitoringService::fillProcessInfoStatus ( )

private

Definition at line 163 of file DQMMonitoringService.cc.

References data, recoMuon::in, geometryCSVtoXML::line, ps_info_, AlCaHLTBitMon_QueryRunRegistry::string, and relativeConstraints::value.

Referenced by reportLumiSectionUnsafe().

                                                  {
   ptree data;
 
   std::ifstream in("/proc/self/status");
   std::string line;
 
   if (in) {
     while (std::getline(in, line)) {
       size_t pos = line.find(':');
       if (pos == std::string::npos)
         continue;
 
       std::string value = line.substr(pos+1);
       boost::trim(value); // value
       line.resize(pos); // key
 
       data.put(line, value);
     }
 
     in.close();
   }
 
   ps_info_.put_child("status", data);
 }

std::string dqmservices::DQMMonitoringService::hackoutTheStdErr ( )

private

Definition at line 188 of file DQMMonitoringService.cc.

References MAX_LOG_SIZE, NULL, SiPixelLorentzAngle_cfi::read, run_regression::ret, findQualityFiles::size, dqm_diff::start, and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by reportLumiSectionUnsafe().

                                                  {
   // magic
   char buf[MAX_LOG_SIZE + 1];
   ssize_t ret = readlink("/proc/self/fd/2", buf, MAX_LOG_SIZE); 
   if (ret > 0) {
     buf[ret] = 0;
   } else {
     return "error: can't read the stderr link.";
   }
 
   if (strstr(buf, "/dev/") != NULL) {
     // can't read this weird file
     return "error: stderr is a special file.";
   }
 
   // try to open
   FILE *sr = fopen(buf , "rb");
   if (sr == NULL)
     return "error: can't open the stderr (deleted?).";
 
   // try to get the last position
   // if this is an ordinary it will succeed
   fseek(sr, 0, SEEK_END);
   long size = ftell(sr);
   if (size > 0) {
     long from = size - (MAX_LOG_SIZE);
     if (from < 0)
       from = 0;
 
     fseek(sr, from, SEEK_SET);
     size_t read = fread(buf, 1, MAX_LOG_SIZE, sr);
     buf[read] = 0;
 
     // If "from" was not zero, discard the first line.
     // Since it will be corrupted anyway.
     char *start = buf;
 
     if (from != 0) {
       start = strchr(start, '\n');
       if (start == NULL) {
         // should not happen
         // return an empty string
         start = buf + read;
       } else {
         start = start + 1;
       }
     }
 
     return std::string(start);
   }
 
   fclose(sr);
   return "error: stderr is not a seek-able file.";
 }

void dqmservices::DQMMonitoringService::registerExtra	(	std::string	name,
		ptree	data
	)

Definition at line 41 of file DQMMonitoringService.cc.

References extra_.

                                                                    {
   extra_.put_child(name, data);
 }

void dqmservices::DQMMonitoringService::reportEvents ( int nevts )

Definition at line 53 of file DQMMonitoringService.cc.

References nevents_, and jetmet_cfg::nevts.

                                                  {
   nevents_ += nevts;
 }

void dqmservices::DQMMonitoringService::reportLumiSection	(	int	run,
		int	lumi
	)

Definition at line 45 of file DQMMonitoringService.cc.

References reportLumiSectionUnsafe().

                                                               {
   try {
     reportLumiSectionUnsafe(run, lumi);
   } catch (...) {
     // pass
   }
 }

void dqmservices::DQMMonitoringService::reportLumiSectionUnsafe	(	int	run,
		int	lumi
	)

private

Definition at line 57 of file DQMMonitoringService.cc.

References prof2calltree::count, extra_, mergeVDriftHistosByStation::file, fillProcessInfoStatus(), cmsPerfStripChart::format, fseq_, hackoutTheStdErr(), hostname_, json_path_, last_report_nevents_, last_report_time_, fff_deleter::log, nevents_, fileCollector::now, NULL, sysUtil::pid, ps_info_, RecoTauCleanerPlugins::pt, RPCpg::rate(), AlCaHLTBitMon_QueryRunRegistry::string, tag_, and cond::rpcobgas::time.

Referenced by reportLumiSection().

                                                                     {
   using std::chrono::duration_cast;
   using std::chrono::milliseconds;
 
   int pid = getpid();
   ++fseq_;
 
   if (! fs::is_directory(json_path_)) {
     extra_.clear();
     return; // no directory present, quit
   }
 
   auto now = std::chrono::high_resolution_clock::now();
 
   // document unique id
   std::string id =
     str(boost::format("dqm-source-state-run%06d-host%s-pid%06d") % run % hostname_ % pid);
 
   // output jsn file
   std::string path_id;
 
   // check for debug fn
   if (fs::exists(json_path_ / ".debug")) {
     path_id = str(boost::format("%d.%08d+%s.jsn") % std::time(NULL) % fseq_ % id);
   } else {
     path_id = id + ".jsn";
   }
 
   std::string tmp_path = (json_path_ / (path_id + ".tmp")).string();
   std::string final_path = (json_path_ / path_id).string();
 
   float rate = (nevents_ - last_report_nevents_);
   rate = rate / duration_cast<milliseconds>(now - last_report_time_).count();
   rate = rate / 100;
 
   ptree pt;
   pt.put("_id", id);
   pt.put("pid", pid);
   pt.put("tag", tag_);
   pt.put("hostname", hostname_); 
   pt.put("sequence", fseq_);
   pt.put("type", "dqm-source-state");
   pt.put("run", run);
   pt.put("lumi", lumi);
 
   pt.put("events_total", nevents_);
   pt.put("events_rate", rate);
 
   // add some additional per-lumi information
   std::string log = hackoutTheStdErr();
   pt.put("stderr", log);
 
   fillProcessInfoStatus();
 
   // these are predefined
   pt.add_child("extra", extra_);
   pt.add_child("ps_info", ps_info_);
 
   std::ofstream file(tmp_path);
   write_json(file, pt, true);
   file.close();
 
   last_report_time_ = now; 
   last_report_nevents_ = nevents_;
 
   rename(tmp_path.c_str(), final_path.c_str());
 }