path: root/src/testbed/test_testbed_api_controllerlink.c

/*
      This file is part of GNUnet
      (C) 2008--2012 Christian Grothoff (and other contributing authors)

      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
      by the Free Software Foundation; either version 3, or (at your
      option) any later version.

      GNUnet is distributed in the hope that it will be useful, but
      WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      General Public License for more details.

      You should have received a copy of the GNU General Public License
      along with GNUnet; see the file COPYING.  If not, write to the
      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
      Boston, MA 02111-1307, USA.
 */

/**
 * @file testbed/test_testbed_api_controllerlink.c
 * @brief testcase for testing controller to subcontroller linking
 * @author Sree Harsha Totakura <sreeharsha@totakura.in> 
 */

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_testing_lib-new.h"
#include "gnunet_testbed_service.h"

/**
 * Generic logging shortcut
 */
#define LOG(kind,...)				\
  GNUNET_log (kind, __VA_ARGS__)

/**
 * Debug logging shorthand
 */
#define LOG_DEBUG(...)				\
  LOG(GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)

/**
 * Different stages in testing
 */
enum Stage
  {

    /**
     * Initial stage
     */
    INIT,

    /**
     * Master controller has started
     */
    MASTER_STARTED,

    /**
     * The first slave has been registered at master controller
     */
    SLAVE1_REGISTERED,

    /**
     * Final stage
     */
    SUCCESS

  };

/**
 * Host for running master controller
 */
static struct GNUNET_TESTBED_Host *host;

/**
 * The master controller process
 */
static struct GNUNET_TESTBED_ControllerProc *cp;

/**
 * Handle to master controller
 */
static struct GNUNET_TESTBED_Controller *mc;

/**
 * Slave host for running slave controller
 */
static struct GNUNET_TESTBED_Host *slave;

/**
 * Slave host registration handle
 */
static struct GNUNET_TESTBED_HostRegistrationHandle *rh;

/**
 * Handle to global configuration
 */
static struct GNUNET_CONFIGURATION_Handle *cfg;

/**
 * Abort task
 */
static GNUNET_SCHEDULER_TaskIdentifier abort_task;

/**
 * Event mask
 */
uint64_t event_mask;

/**
 * Global testing status
 */
static enum Stage result;


/**
 * Shutdown nicely
 *
 * @param cls NULL
 * @param tc the task context
 */
static void
do_shutdown (void *cls, const const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  if (GNUNET_SCHEDULER_NO_TASK != abort_task)
    GNUNET_SCHEDULER_cancel (abort_task);
    if (NULL != slave)
    GNUNET_TESTBED_host_destroy (slave);
  if (NULL != host)
    GNUNET_TESTBED_host_destroy (host);
  if (NULL != mc)
    GNUNET_TESTBED_controller_disconnect (mc);
  if (NULL != cfg)
    GNUNET_CONFIGURATION_destroy (cfg);
  if (NULL != cp)
    GNUNET_TESTBED_controller_stop (cp);
  if (NULL != rh)
    GNUNET_TESTBED_cancel_registration (rh);
  
}


/**
 * abort task to run on test timed out
 *
 * @param cls NULL
 * @param tc the task context
 */
static void
do_abort (void *cls, const const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  LOG (GNUNET_ERROR_TYPE_WARNING, "Test timedout -- Aborting\n");
  abort_task = GNUNET_SCHEDULER_NO_TASK;
  do_shutdown (cls, tc);
}


/**
 * Signature of the event handler function called by the
 * respective event controller.
 *
 * @param cls closure
 * @param event information about the event
 */
static void 
controller_cb(void *cls, const struct GNUNET_TESTBED_EventInformation *event)
{
  GNUNET_assert (0);
}


/**
 * Callback which will be called to after a host registration succeeded or failed
 *
 * @param cls the host which has been registered
 * @param emsg the error message; NULL if host registration is successful
 */
static void 
registration_cont (void *cls, const char *emsg)
{
  rh = NULL;
  switch (result)
  {
  case MASTER_STARTED:
    GNUNET_assert (NULL == emsg);
    GNUNET_assert (NULL != mc);
    result = SLAVE1_REGISTERED;
    GNUNET_assert (NULL != cfg);
    GNUNET_TESTBED_controller_link (mc, slave, NULL, cfg, GNUNET_YES);
    result = SUCCESS;
    GNUNET_SCHEDULER_add_delayed 
      (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3),
       &do_shutdown, NULL);
    break;
  case INIT:
  case SUCCESS:
  case SLAVE1_REGISTERED:
    GNUNET_assert (0);
  }
}

/**
 * Callback to signal successfull startup of the controller process
 *
 * @param cls the closure from GNUNET_TESTBED_controller_start()
 * @param cfg the configuration with which the controller has been started;
 *          NULL if status is not GNUNET_OK
 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
 *          GNUNET_TESTBED_controller_stop() shouldn't be called in this case
 */
static void 
status_cb (void *cls, 
	   const struct GNUNET_CONFIGURATION_Handle *config, int status)
{
  switch (result)
  {
  case INIT:
    GNUNET_assert (GNUNET_OK == status);
    event_mask = 0;
    event_mask |= (1L << GNUNET_TESTBED_ET_PEER_START);
    event_mask |= (1L << GNUNET_TESTBED_ET_PEER_STOP);
    event_mask |= (1L << GNUNET_TESTBED_ET_CONNECT);
    event_mask |= (1L << GNUNET_TESTBED_ET_OPERATION_FINISHED);
    mc = GNUNET_TESTBED_controller_connect (config, host, event_mask,
					    &controller_cb, NULL);
    GNUNET_assert (NULL != mc);
    result = MASTER_STARTED;
    slave = GNUNET_TESTBED_host_create_with_id (2, "127.0.0.1", NULL, 0);
    GNUNET_assert (NULL != slave);
    rh = GNUNET_TESTBED_register_host (mc, slave, &registration_cont, NULL);
    GNUNET_assert (NULL != rh);
    break;
  default:
    GNUNET_assert (0);
  }
}


/**
 * Main run function. 
 *
 * @param cls NULL
 * @param args arguments passed to GNUNET_PROGRAM_run
 * @param cfgfile the path to configuration file
 * @param cfg the configuration file handle
 */
static void
run (void *cls, char *const *args, const char *cfgfile,
     const struct GNUNET_CONFIGURATION_Handle *config)
{
  host = GNUNET_TESTBED_host_create (NULL, NULL, 0);
  GNUNET_assert (NULL != host);
  cfg = GNUNET_CONFIGURATION_dup (config);
  cp =
    GNUNET_TESTBED_controller_start ("127.0.0.1", host, cfg, status_cb, NULL);
  abort_task = GNUNET_SCHEDULER_add_delayed 
    (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 30), 
     &do_abort, NULL);
}


/**
 * Main function
 */
int main (int argc, char **argv)
{
  int ret;

  char *const argv2[] = { "test_testbed_api_controllerlink",
                          "-c", "test_testbed_api.conf",
                          NULL
  };
  struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_OPTION_END
  };
  result = INIT;
  ret = GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1, argv2,
			    "test_testbed_api_controllerlink", "nohelp", options, &run,
			    NULL);
  if ((GNUNET_OK != ret) || (SUCCESS != result))
    return 1;
  return 0;
}