git.sesse.net Git - cubemap/blob - accesslog.cpp

   1 #include <errno.h>
   2 #include <poll.h>
   3 #include <stddef.h>
   4 #include <stdio.h>
   5 #include <time.h>
   6 #include <unistd.h>
   7 #include <string>
   8 #include <vector>
   9
  10 #include "accesslog.h"
  11 #include "client.h"
  12 #include "log.h"
  13 #include "mutexlock.h"
  14
  15 using namespace std;
  16
  17 AccessLogThread::AccessLogThread()
  18 {
  19         pthread_mutex_init(&mutex, NULL);
  20 }
  21
  22 AccessLogThread::AccessLogThread(const string &filename)
  23         : filename(filename) {
  24         pthread_mutex_init(&mutex, NULL);
  25 }
  26
  27 void AccessLogThread::write(const ClientStats& client)
  28 {
  29         MutexLock lock(&mutex);
  30         pending_writes.push_back(client);
  31 }
  32
  33 void AccessLogThread::do_work()
  34 {
  35         // Open the file.
  36         if (filename.empty()) {
  37                 logfp = NULL;
  38         } else {
  39                 logfp = fopen(filename.c_str(), "a+");
  40                 if (logfp == NULL) {
  41                         log_perror(filename.c_str());
  42                         // Continue as before.
  43                 }
  44         }
  45
  46         while (!should_stop) {
  47                 // Empty the queue.
  48                 vector<ClientStats> writes;
  49                 {
  50                         MutexLock lock(&mutex);
  51                         swap(pending_writes, writes);
  52                 }
  53
  54                 if (logfp == NULL) {
  55                         continue;
  56                 }
  57
  58                 // Do the actual writes.
  59                 time_t now = time(NULL);
  60                 for (size_t i = 0; i < writes.size(); ++i) {
  61                         fprintf(logfp, "%llu %s %s %d %llu %llu %llu\n",
  62                                 (long long unsigned)(writes[i].connect_time),
  63                                 writes[i].remote_addr.c_str(),
  64                                 writes[i].stream_id.c_str(),
  65                                 int(now - writes[i].connect_time),
  66                                 (long long unsigned)(writes[i].bytes_sent),
  67                                 (long long unsigned)(writes[i].bytes_lost),
  68                                 (long long unsigned)(writes[i].num_loss_events));
  69                 }
  70                 fflush(logfp);
  71
  72                 // Wait until the stop_fd pipe is closed, one second has passed.
  73                 // or a spurious signal arrives.
  74                 pollfd pfd;
  75                 pfd.fd = stop_fd_read;
  76                 pfd.events = POLLIN | POLLRDHUP;
  77
  78                 int nfds = poll(&pfd, 1, 1000);
  79                 if (nfds == 0 || (nfds == -1 && errno == EINTR)) {
  80                         continue;
  81                 }
  82                 if (nfds == 1) {
  83                         // Should stop.
  84                         break;
  85                 }
  86                 if (nfds == -1) {
  87                         log_perror("poll");
  88                         usleep(100000);
  89                         continue;
  90                 }
  91         }
  92
  93         if (fclose(logfp) == EOF) {
  94                 log_perror("fclose");
  95         }
  96
  97         logfp = NULL;
  98 }