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 FILE *killLogFilePtr;
  38 static char *killLogFileName;
  39
  40 static void
  41 arm_notify_stop (void *cls, int success)
  42 {
  43   GNUNET_assert (success == GNUNET_NO);
  44 #if START_ARM
  45   GNUNET_ARM_stop_service (arm, "arm", TIMEOUT, NULL, NULL);
  46 #endif
  47 }
  48
  49
  50
  51 static void
  52 do_nothing_notify (void *cls, int success)
  53 {
  54         GNUNET_assert (success == GNUNET_YES);
  55         ok = 1;
  56 }
  57
  58
  59 static void
  60 arm_notify (void *cls, int success)
  61 {
  62   GNUNET_assert (success == GNUNET_YES);
  63   GNUNET_ARM_start_service (arm, "do-nothing", TIMEOUT, &do_nothing_notify, NULL);
  64 }
  65
  66
  67 static void
  68 kill_task (void *cbData,
  69                    const struct GNUNET_SCHEDULER_TaskContext *tc);
  70 static void
  71 do_nothing_restarted_notify_task (void *unused,
  72                    const struct GNUNET_SCHEDULER_TaskContext *tc)
  73 {
  74         static char a;
  75         static int trialCount = 0;
  76
  77         trialCount++;
  78         if (trialCount >= 11) {
  79                 if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
  80                         fprintf(killLogFilePtr, "Reason is shutdown!\n");
  81                 else if ((tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT) != 0)
  82                   fprintf(killLogFilePtr, "%d.Reason is timeout!\n", trialCount);
  83                 else if ((tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE) != 0)
  84                         fprintf(killLogFilePtr, "%d.Service is running!\n", trialCount);
  85         }
  86
  87         GNUNET_SCHEDULER_add_now (sched, &kill_task, &a); // checks if this was too fast
  88 }
  89
  90
  91 static void
  92 kill_task (void *cbData,
  93                    const struct GNUNET_SCHEDULER_TaskContext *tc)
  94 {
  95         int* reason;
  96         struct GNUNET_CLIENT_Connection * doNothingConnection = NULL;
  97         static struct GNUNET_TIME_Absolute startedWaitingAt;
  98         struct GNUNET_TIME_Relative waitedFor;
  99         static int trialCount = 0;
 100
 101         reason = cbData;
 102         if (NULL != reason) {
 103                 waitedFor = GNUNET_TIME_absolute_get_duration(startedWaitingAt);
 104                 trialCount++;
 105                 if (trialCount >= 11)
 106                   fprintf(killLogFilePtr,
 107                           "Trial no.%d, Started waiting at: %llu. Waited for: %llu\n",
 108                           trialCount,
 109                           (unsigned long long) startedWaitingAt.value,
 110                           (unsigned long long) waitedFor.value);
 111         }
 112
 113          /* Connect to the doNothing task */
 114         doNothingConnection = GNUNET_CLIENT_connect (sched, "do-nothing", cfg);
 115         if (NULL == doNothingConnection)
 116                 fprintf(killLogFilePtr, "Unable to connect to do-nothing process!\n");
 117         else if (trialCount == 20) {
 118                 GNUNET_ARM_stop_service (arm, "do-nothing", TIMEOUT, &arm_notify_stop, NULL);
 119                 return;
 120         }
 121
 122         /* Use the created connection to kill the doNothingTask */
 123         GNUNET_CLIENT_service_shutdown(doNothingConnection);
 124         sleep(0.005);
 125         startedWaitingAt = GNUNET_TIME_absolute_get();
 126         /*
 127          * There is something wrong here!
 128          * TIMEOUT value is set to 10 seconds (a drastically large value)
 129          * debugging is showing that the reason for which
 130          * do_nothing_restarted_notify_task is called is "always"
 131          * TIMEOUT which means that the "do-nothing" service is not running
 132          * however the overall execution time doesn't exceed 2 seconds
 133          * which means there is something tricky about the TIMOUT passed
 134          * to function GNUNET_CLIENT_service_test()
 135          */
 136         GNUNET_CLIENT_service_test(sched, "do-nothing", cfg, TIMEOUT, &do_nothing_restarted_notify_task, NULL);
 137 }
 138
 139 static void
 140 task (void *cls,
 141       struct GNUNET_SCHEDULER_Handle *s,
 142       char *const *args,
 143       const char *cfgfile,
 144       const struct GNUNET_CONFIGURATION_Handle *c)
 145 {
 146   cfg = c;
 147   sched = s;
 148
 149   arm = GNUNET_ARM_connect (cfg, sched, NULL);
 150 #if START_ARM
 151   GNUNET_ARM_start_service (arm, "arm", TIMEOUT, &arm_notify, NULL);
 152 #else
 153   arm_do_nothing (NULL, GNUNET_YES);
 154 #endif
 155   GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_UNIT_SECONDS, &kill_task, NULL);
 156 }
 157
 158 static int
 159 check ()
 160 {
 161   char *const argv[] = {
 162     "test-arm-api",
 163     "-c", "test_arm_api_data.conf",
 164 #if VERBOSE
 165     "-L", "DEBUG",
 166 #endif
 167     NULL
 168   };
 169   struct GNUNET_GETOPT_CommandLineOption options[] = {
 170     GNUNET_GETOPT_OPTION_END
 171   };
 172
 173   /* Running ARM  and running the do_nothing task */
 174   GNUNET_assert (GNUNET_OK ==
 175                  GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 176                                      argv,
 177                                      "test-exponential-backoff",
 178                                      "nohelp", options, &task, NULL));
 179
 180
 181   return ok;
 182 }
 183
 184 static int
 185 init()
 186 {
 187         killLogFileName = GNUNET_DISK_mktemp("exponential-backoff-waiting.log");
 188         if (NULL == (killLogFilePtr = FOPEN(killLogFileName, "w"))) {
 189                  GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "fopen", killLogFileName);
 190                  GNUNET_free (killLogFileName);
 191                  return GNUNET_SYSERR;
 192         }
 193
 194         return GNUNET_OK;
 195 }
 196
 197
 198 static void
 199 houseKeep()
 200 {
 201         GNUNET_assert (0 == fclose (killLogFilePtr));
 202         GNUNET_free(killLogFileName);
 203 }
 204
 205
 206 int
 207 main (int argc, char *argv[])
 208 {
 209   int ret;
 210
 211
 212   GNUNET_log_setup ("test-exponential-backoff",
 213 #if VERBOSE
 214                     "DEBUG",
 215 #else
 216                     "WARNING",
 217 #endif
 218                     NULL);
 219
 220   init();
 221   ret = check ();
 222   houseKeep();
 223   return ret;
 224 }
 225
 226 /* end of test_exponential_backoff.c */