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- /*
- This file is part of GNUnet.
- Copyright (C) 2009 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 arm/test_exponential_backoff.c
- * @brief testcase for gnunet-service-arm.c
- */
- #include "platform.h"
- #include "gnunet_arm_service.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_protocols.h"
- #define LOG(...) GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
- #define START_ARM GNUNET_YES
- #define LOG_BACKOFF GNUNET_NO
- #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
- #define SERVICE_TEST_TIMEOUT GNUNET_TIME_UNIT_FOREVER_REL
- #define FIVE_MILLISECONDS GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 5)
- #define SERVICE "do-nothing"
- #define BINARY "mockup-service"
- #define CFGFILENAME "test_arm_api_data2.conf"
- static const struct GNUNET_CONFIGURATION_Handle *cfg;
- static struct GNUNET_ARM_Handle *arm;
- static struct GNUNET_ARM_MonitorHandle *mon;
- static int ok = 1;
- static int phase = 0;
- static int trialCount;
- static struct GNUNET_TIME_Absolute startedWaitingAt;
- struct GNUNET_TIME_Relative waitedFor;
- struct GNUNET_TIME_Relative waitedFor_prev;
- #if LOG_BACKOFF
- static FILE *killLogFilePtr;
- static char *killLogFileName;
- #endif
- typedef void (*GNUNET_CLIENT_ShutdownTask) (void *cls, int reason);
- /**
- * Context for handling the shutdown of a service.
- */
- struct ShutdownContext
- {
- /**
- * Connection to the service that is being shutdown.
- */
- struct GNUNET_CLIENT_Connection *sock;
- /**
- * Time allowed for shutdown to happen.
- */
- struct GNUNET_TIME_Absolute timeout;
- /**
- * Task set up to cancel the shutdown request on timeout.
- */
- struct GNUNET_SCHEDULER_Task * cancel_task;
- /**
- * Task to call once shutdown complete
- */
- GNUNET_CLIENT_ShutdownTask cont;
- /**
- * Closure for shutdown continuation
- */
- void *cont_cls;
- /**
- * We received a confirmation that the service will shut down.
- */
- int confirmed;
- };
- /**
- * Handler receiving response to service shutdown requests.
- * We expect it to be called with NULL, since the service that
- * we are shutting down will just die without replying.
- *
- * @param cls closure
- * @param msg NULL, indicating socket closure.
- */
- static void
- service_shutdown_handler (void *cls, const struct GNUNET_MessageHeader *msg)
- {
- struct ShutdownContext *shutdown_ctx = cls;
- if (NULL == msg)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Service shutdown complete.\n");
- if (shutdown_ctx->cont != NULL)
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_NO);
- GNUNET_SCHEDULER_cancel (shutdown_ctx->cancel_task);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
- GNUNET_free (shutdown_ctx);
- return;
- }
- GNUNET_assert (0);
- }
- /**
- * Shutting down took too long, cancel receive and return error.
- *
- * @param cls closure
- * @param tc context information (why was this task triggered now)
- */
- void
- service_shutdown_cancel (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- struct ShutdownContext *shutdown_ctx = cls;
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "service_shutdown_cancel called!\n");
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_SYSERR);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
- GNUNET_free (shutdown_ctx);
- }
- /**
- * If possible, write a shutdown message to the target
- * buffer and destroy the client connection.
- *
- * @param cls the "struct GNUNET_CLIENT_Connection" to destroy
- * @param size number of bytes available in buf
- * @param buf NULL on error, otherwise target buffer
- * @return number of bytes written to buf
- */
- static size_t
- write_shutdown (void *cls, size_t size, void *buf)
- {
- struct GNUNET_MessageHeader *msg;
- struct ShutdownContext *shutdown_ctx = cls;
- if (size < sizeof (struct GNUNET_MessageHeader))
- {
- LOG ("Failed to send a shutdown request\n");
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_SYSERR);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
- GNUNET_free (shutdown_ctx);
- return 0; /* client disconnected */
- }
- GNUNET_CLIENT_receive (shutdown_ctx->sock, &service_shutdown_handler,
- shutdown_ctx, GNUNET_TIME_UNIT_FOREVER_REL);
- shutdown_ctx->cancel_task = GNUNET_SCHEDULER_add_delayed (
- GNUNET_TIME_absolute_get_remaining (shutdown_ctx->timeout),
- &service_shutdown_cancel, shutdown_ctx);
- msg = (struct GNUNET_MessageHeader *) buf;
- msg->type = htons (GNUNET_MESSAGE_TYPE_ARM_STOP);
- msg->size = htons (sizeof (struct GNUNET_MessageHeader));
- strcpy ((char *) &msg[1], SERVICE);
- LOG ("Sent a shutdown request\n");
- return sizeof (struct GNUNET_MessageHeader) + strlen (SERVICE) + 1;
- }
- /**
- * Request that the service should shutdown.
- * Afterwards, the connection will automatically be
- * disconnected. Hence the "sock" should not
- * be used by the caller after this call
- * (calling this function frees "sock" after a while).
- *
- * @param sock the socket connected to the service
- * @param timeout how long to wait before giving up on transmission
- * @param cont continuation to call once the service is really down
- * @param cont_cls closure for continuation
- *
- */
- static void
- do_nothing_service_shutdown (struct GNUNET_CLIENT_Connection *sock,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_CLIENT_ShutdownTask cont, void *cont_cls)
- {
- struct ShutdownContext *shutdown_ctx;
- shutdown_ctx = GNUNET_new (struct ShutdownContext);
- shutdown_ctx->cont = cont;
- shutdown_ctx->cont_cls = cont_cls;
- shutdown_ctx->sock = sock;
- shutdown_ctx->timeout = GNUNET_TIME_relative_to_absolute (timeout);
- GNUNET_CLIENT_notify_transmit_ready (sock,
- sizeof (struct GNUNET_MessageHeader) + strlen (SERVICE) + 1,
- timeout, GNUNET_NO, &write_shutdown,
- shutdown_ctx);
- }
- static void
- kill_task (void *cbData, const struct GNUNET_SCHEDULER_TaskContext *tc);
- static void
- shutdown_cont (void *cls, int reason)
- {
- if (GNUNET_NO != reason)
- {
- /* Re-try shutdown */
- LOG ("do-nothing didn't die, trying again\n");
- GNUNET_SCHEDULER_add_now (kill_task, NULL);
- return;
- }
- startedWaitingAt = GNUNET_TIME_absolute_get ();
- LOG ("do-nothing is dead, starting the countdown\n");
- }
- static void
- kill_task (void *cbData, const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- static struct GNUNET_CLIENT_Connection *doNothingConnection = NULL;
- if (NULL != cbData)
- {
- waitedFor = GNUNET_TIME_absolute_get_duration (startedWaitingAt);
- LOG ("Waited for: %s\n",
- GNUNET_STRINGS_relative_time_to_string (waitedFor, GNUNET_YES));
- }
- else
- {
- waitedFor.rel_value_us = 0;
- }
- /* Connect to the doNothing task */
- doNothingConnection = GNUNET_CLIENT_connect (SERVICE, cfg);
- GNUNET_assert (doNothingConnection != NULL);
- if (trialCount == 12)
- waitedFor_prev = waitedFor;
- else if (trialCount == 13)
- {
- GNUNET_CLIENT_disconnect (doNothingConnection);
- GNUNET_ARM_request_service_stop (arm, SERVICE, TIMEOUT, NULL, NULL);
- if (waitedFor_prev.rel_value_us >= waitedFor.rel_value_us)
- ok = 9;
- else
- ok = 0;
- trialCount += 1;
- return;
- }
- trialCount += 1;
- /* Use the created connection to kill the doNothingTask */
- do_nothing_service_shutdown (doNothingConnection,
- TIMEOUT, &shutdown_cont, NULL);
- }
- static void
- trigger_disconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- GNUNET_ARM_disconnect_and_free (arm);
- GNUNET_ARM_monitor_disconnect_and_free (mon);
- }
- static void
- arm_stop_cb (void *cls, enum GNUNET_ARM_RequestStatus status, const char *servicename, enum GNUNET_ARM_Result result)
- {
- GNUNET_break (status == GNUNET_ARM_REQUEST_SENT_OK);
- GNUNET_break (result == GNUNET_ARM_RESULT_STOPPED);
- LOG ("ARM service stopped\n");
- GNUNET_SCHEDULER_add_now (trigger_disconnect, NULL);
- }
- static void
- srv_status (void *cls, const char *service, enum GNUNET_ARM_ServiceStatus status)
- {
- LOG ("Service %s is %u, phase %u\n", service, status, phase);
- if (status == GNUNET_ARM_SERVICE_MONITORING_STARTED)
- {
- phase++;
- GNUNET_ARM_request_service_start (arm, SERVICE,
- GNUNET_OS_INHERIT_STD_OUT_AND_ERR, TIMEOUT, NULL, NULL);
- return;
- }
- if (phase == 1)
- {
- GNUNET_break (status == GNUNET_ARM_SERVICE_STARTING);
- GNUNET_break (0 == strcasecmp (service, SERVICE));
- GNUNET_break (phase == 1);
- LOG ("do-nothing is starting\n");
- phase++;
- ok = 1;
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS, &kill_task, NULL);
- }
- else if ((phase == 2) && (strcasecmp (SERVICE, service) == 0))
- {
- /* We passively monitor ARM for status updates. ARM should tell us
- * when do-nothing dies (no need to run a service upness test ourselves).
- */
- if (status == GNUNET_ARM_SERVICE_STARTING)
- {
- LOG ("do-nothing is starting\n");
- GNUNET_SCHEDULER_add_now (kill_task, &ok);
- }
- else if ((status == GNUNET_ARM_SERVICE_STOPPED) && (trialCount == 14))
- {
- phase++;
- GNUNET_ARM_request_service_stop (arm, "arm", TIMEOUT, arm_stop_cb, NULL);
- }
- }
- }
- static void
- arm_start_cb (void *cls, enum GNUNET_ARM_RequestStatus status, const char *servicename, enum GNUNET_ARM_Result result)
- {
- GNUNET_break (status == GNUNET_ARM_REQUEST_SENT_OK);
- GNUNET_break (result == GNUNET_ARM_RESULT_STARTING);
- GNUNET_break (phase == 0);
- LOG ("Sent 'START' request for arm to ARM %s\n",
- (status == GNUNET_ARM_REQUEST_SENT_OK) ? "successfully" : "unsuccessfully");
- }
- static void
- task (void *cls, char *const *args, const char *cfgfile,
- const struct GNUNET_CONFIGURATION_Handle *c)
- {
- char *armconfig;
- cfg = c;
- if (NULL != cfgfile)
- {
- if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "arm",
- "CONFIG", &armconfig))
- {
- GNUNET_CONFIGURATION_set_value_string ((struct GNUNET_CONFIGURATION_Handle
- *) cfg, "arm", "CONFIG",
- cfgfile);
- }
- else
- GNUNET_free (armconfig);
- }
- arm = GNUNET_ARM_connect (cfg, NULL, NULL);
- if (NULL != arm)
- {
- mon = GNUNET_ARM_monitor (cfg, &srv_status, NULL);
- if (NULL != mon)
- {
- #if START_ARM
- GNUNET_ARM_request_service_start (arm, "arm",
- GNUNET_OS_INHERIT_STD_OUT_AND_ERR, GNUNET_TIME_UNIT_ZERO, arm_start_cb, NULL);
- #else
- arm_start_cb (NULL, arm, GNUNET_ARM_REQUEST_SENT_OK, "arm", GNUNET_ARM_SERVICE_STARTING);
- #endif
- }
- else
- {
- GNUNET_ARM_disconnect_and_free (arm);
- arm = NULL;
- }
- }
- }
- static int
- check ()
- {
- char *const argv[] = {
- "test-exponential-backoff",
- "-c", CFGFILENAME,
- NULL
- };
- struct GNUNET_GETOPT_CommandLineOption options[] = {
- GNUNET_GETOPT_OPTION_END
- };
- /* Running ARM and running the do_nothing task */
- GNUNET_assert (GNUNET_OK ==
- GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
- argv, "test-exponential-backoff",
- "nohelp", options, &task, NULL));
- return ok;
- }
- static int
- init ()
- {
- struct GNUNET_CONFIGURATION_Handle *cfg;
- char pwd[PATH_MAX];
- char *binary;
- cfg = GNUNET_CONFIGURATION_create ();
- if (GNUNET_OK != GNUNET_CONFIGURATION_parse (cfg,
- "test_arm_api_data.conf"))
- return GNUNET_SYSERR;
- if (NULL == getcwd (pwd, PATH_MAX))
- return GNUNET_SYSERR;
- GNUNET_assert (0 < GNUNET_asprintf (&binary, "%s/%s", pwd, BINARY));
- GNUNET_CONFIGURATION_set_value_string (cfg, SERVICE, "BINARY", binary);
- GNUNET_free (binary);
- if (GNUNET_OK != GNUNET_CONFIGURATION_write (cfg, CFGFILENAME))
- {
- GNUNET_CONFIGURATION_destroy (cfg);
- return GNUNET_SYSERR;
- }
- GNUNET_CONFIGURATION_destroy (cfg);
- #if LOG_BACKOFF
- killLogFileName = GNUNET_DISK_mktemp ("exponential-backoff-waiting.log");
- if (NULL == (killLogFilePtr = FOPEN (killLogFileName, "w")))
- {
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "fopen",
- killLogFileName);
- GNUNET_free (killLogFileName);
- return GNUNET_SYSERR;
- }
- #endif
- return GNUNET_OK;
- }
- static void
- houseKeep ()
- {
- #if LOG_BACKOFF
- GNUNET_assert (0 == fclose (killLogFilePtr));
- GNUNET_free (killLogFileName);
- #endif
- (void) unlink (CFGFILENAME);
- }
- int
- main (int argc, char *argv[])
- {
- int ret;
- GNUNET_log_setup ("test-exponential-backoff",
- "WARNING",
- NULL);
- if (GNUNET_OK != init ())
- return 1;
- ret = check ();
- houseKeep ();
- return ret;
- }
- /* end of test_exponential_backoff.c */
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