src/arm/test_exponential_backoff.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2009 Christian Grothoff (and other contributing authors)
   4
   5      GNUnet is free software; you can redistribute it and/or modify
   6      it under the terms of the GNU General Public License as published
   7      by the Free Software Foundation; either version 2, or (at your
   8      option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      General Public License for more details.
  14
  15      You should have received a copy of the GNU General Public License
  16      along with GNUnet; see the file COPYING.  If not, write to the
  17      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18      Boston, MA 02111-1307, USA.
  19 */
  20 /**
  21  * @file arm/test_exponential_backoff.c
  22  * @brief testcase for gnunet-service-arm.c
  23  */
  24 #include "platform.h"
  25 #include "gnunet_arm_service.h"
  26 #include "gnunet_client_lib.h"
  27 #include "gnunet_configuration_lib.h"
  28 #include "gnunet_program_lib.h"
  29
  30 #define START_ARM GNUNET_YES
  31 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
  32
  33 static struct GNUNET_SCHEDULER_Handle *sched;
  34 static const struct GNUNET_CONFIGURATION_Handle *cfg;
  35 static struct GNUNET_ARM_Handle *arm;
  36 static int ok = 1;
  37 static int kill_ok = GNUNET_OK;
  38 static FILE *killLogFilePtr;
  39 static char *killLogFileName;
  40
  41 static void
  42 arm_notify_stop (void *cls, int success)
  43 {
  44   GNUNET_assert (success == GNUNET_NO);
  45 #if START_ARM
  46   GNUNET_ARM_stop_service (arm, "arm", TIMEOUT, NULL, NULL);
  47 #endif
  48 }
  49
  50
  51 static void
  52 do_nothing_notify_stop (void *cls, int success)
  53 {
  54   GNUNET_assert (success == GNUNET_NO);
  55 }
  56
  57
  58 static void
  59 do_nothing_notify (void *cls, int success)
  60 {
  61         GNUNET_assert (success == GNUNET_YES);
  62         ok = 1;
  63 }
  64
  65
  66 static void
  67 arm_notify (void *cls, int success)
  68 {
  69   GNUNET_assert (success == GNUNET_YES);
  70   GNUNET_ARM_start_service (arm, "do-nothing", TIMEOUT, &do_nothing_notify, NULL);
  71 }
  72
  73
  74 static void
  75 kill_task (void *cbData,
  76                    const struct GNUNET_SCHEDULER_TaskContext *tc);
  77 static void
  78 do_nothing_restarted_notify_task (void *unused,
  79                    const struct GNUNET_SCHEDULER_TaskContext *tc)
  80 {
  81         static char a;
  82         static int trialCount = 0;
  83
  84         trialCount++;
  85         if (trialCount >= 11) {
  86                 if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
  87                         fprintf(killLogFilePtr, "Reason is shutdown!\n");
  88                 else if ((tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT) != 0)
  89                   fprintf(killLogFilePtr, "%d.Reason is timeout!\n", trialCount);
  90                 else if ((tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE) != 0)
  91                         fprintf(killLogFilePtr, "%d.Service is running!\n", trialCount);
  92         }
  93
  94         GNUNET_SCHEDULER_add_now (sched, &kill_task, &a); // checks if this was too fast
  95 }
  96
  97
  98 static void
  99 kill_task (void *cbData,
 100                    const struct GNUNET_SCHEDULER_TaskContext *tc)
 101 {
 102         int* reason;
 103         struct GNUNET_CLIENT_Connection * doNothingConnection = NULL;
 104         static struct GNUNET_TIME_Absolute startedWaitingAt;
 105         struct GNUNET_TIME_Relative waitedFor;
 106         static int trialCount = 0;
 107
 108         reason = cbData;
 109         if (NULL != reason) {
 110                 waitedFor = GNUNET_TIME_absolute_get_duration(startedWaitingAt);
 111                 trialCount++;
 112                 if (trialCount >= 11)
 113                   fprintf(killLogFilePtr,
 114                           "Trial no.%d, Started waiting at: %llu. Waited for: %llu\n",
 115                           trialCount,
 116                           (unsigned long long) startedWaitingAt.value,
 117                           (unsigned long long) waitedFor.value);
 118         }
 119
 120          /* Connect to the doNothing task */
 121         doNothingConnection = GNUNET_CLIENT_connect (sched, "do-nothing", cfg);
 122         if (NULL == doNothingConnection)
 123                 fprintf(killLogFilePtr, "Unable to connect to do-nothing process!\n");
 124         else if (trialCount == 20) {
 125                 GNUNET_ARM_stop_service (arm, "do-nothing", TIMEOUT, &arm_notify_stop, NULL);
 126                 return;
 127         }
 128
 129         /* Use the created connection to kill the doNothingTask */
 130         GNUNET_CLIENT_service_shutdown(doNothingConnection);
 131         sleep(0.005);
 132         startedWaitingAt = GNUNET_TIME_absolute_get();
 133         /*
 134          * There is something wrong here!
 135          * TIMEOUT value is set to 10 seconds (a drastically large value)
 136          * debugging is showing that the reason for which
 137          * do_nothing_restarted_notify_task is called is "always"
 138          * TIMEOUT which means that the "do-nothing" service is not running
 139          * however the overall execution time doesn't exceed 2 seconds
 140          * which means there is something tricky about the TIMOUT passed
 141          * to function GNUNET_CLIENT_service_test()
 142          */
 143         GNUNET_CLIENT_service_test(sched, "do-nothing", cfg, TIMEOUT, &do_nothing_restarted_notify_task, NULL);
 144 }
 145
 146 static void
 147 task (void *cls,
 148       struct GNUNET_SCHEDULER_Handle *s,
 149       char *const *args,
 150       const char *cfgfile,
 151       const struct GNUNET_CONFIGURATION_Handle *c)
 152 {
 153   cfg = c;
 154   sched = s;
 155
 156   arm = GNUNET_ARM_connect (cfg, sched, NULL);
 157 #if START_ARM
 158   GNUNET_ARM_start_service (arm, "arm", TIMEOUT, &arm_notify, NULL);
 159 #else
 160   arm_do_nothing (NULL, GNUNET_YES);
 161 #endif
 162   GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_UNIT_SECONDS, &kill_task, NULL);
 163 }
 164
 165 static int
 166 check ()
 167 {
 168   char *const argv[] = {
 169     "test-arm-api",
 170     "-c", "test_arm_api_data.conf",
 171 #if VERBOSE
 172     "-L", "DEBUG",
 173 #endif
 174     NULL
 175   };
 176   struct GNUNET_GETOPT_CommandLineOption options[] = {
 177     GNUNET_GETOPT_OPTION_END
 178   };
 179
 180   /* Running ARM  and running the do_nothing task */
 181   GNUNET_assert (GNUNET_OK ==
 182                  GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 183                                      argv,
 184                                      "test-exponential-backoff",
 185                                      "nohelp", options, &task, NULL));
 186
 187
 188   return ok;
 189 }
 190
 191 static int
 192 init()
 193 {
 194         killLogFileName = GNUNET_DISK_mktemp("exponential-backoff-waiting.log");
 195         if (NULL == (killLogFilePtr = FOPEN(killLogFileName, "w"))) {
 196                  GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "fopen", killLogFileName);
 197                  GNUNET_free (killLogFileName);
 198                  return GNUNET_SYSERR;
 199         }
 200
 201         return GNUNET_OK;
 202 }
 203
 204
 205 static void
 206 houseKeep()
 207 {
 208         GNUNET_assert (0 == fclose (killLogFilePtr));
 209         GNUNET_free(killLogFileName);
 210 }
 211
 212
 213 int
 214 main (int argc, char *argv[])
 215 {
 216   int ret;
 217
 218
 219   GNUNET_log_setup ("test-exponential-backoff",
 220 #if VERBOSE
 221                     "DEBUG",
 222 #else
 223                     "WARNING",
 224 #endif
 225                     NULL);
 226
 227   init();
 228   ret = check ();
 229   houseKeep();
 230   return ret;
 231 }
 232
 233 /* end of test_exponential_backoff.c */