/*
This file is part of GNUnet.
- Copyright (C) 2009 GNUnet e.V.
+ Copyright (C) 2009, 2016 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
/**
* @file arm/test_exponential_backoff.c
* @brief testcase for gnunet-service-arm.c
+ * @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_arm_service.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)
static struct GNUNET_ARM_MonitorHandle *mon;
+static struct GNUNET_SCHEDULER_Task *kt;
+
static int ok = 1;
static int phase = 0;
#endif
-typedef void (*GNUNET_CLIENT_ShutdownTask) (void *cls, int reason);
-
/**
* Context for handling the shutdown of a service.
*/
/**
* Connection to the service that is being shutdown.
*/
- struct GNUNET_CLIENT_Connection *sock;
-
- /**
- * Time allowed for shutdown to happen.
- */
- struct GNUNET_TIME_Absolute timeout;
+ struct GNUNET_MQ_Handle *mq;
/**
* Task set up to cancel the shutdown request on timeout.
*/
- struct GNUNET_SCHEDULER_Task * cancel_task;
+ 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;
+static void
+kill_task (void *cbData);
-};
/**
- * 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.
+ * Shutting down took too long, cancel receive and return error.
*
* @param cls closure
- * @param msg NULL, indicating socket closure.
*/
static void
-service_shutdown_handler (void *cls, const struct GNUNET_MessageHeader *msg)
+service_shutdown_timeout (void *cls)
{
- 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.
+ * Generic error handler, called with the appropriate error code and
+ * the same closure specified at the creation of the message queue.
+ * Not every message queue implementation supports an error handler.
*
- * @param cls closure
- * @param tc context information (why was this task triggered now)
+ * @param cls closure with the `struct ShutdownContext *`
+ * @param error error code
*/
static void
-service_shutdown_cancel (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
{
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_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Service shutdown complete (MQ error).\n");
+ GNUNET_SCHEDULER_cancel (shutdown_ctx->cancel_task);
+ GNUNET_MQ_destroy (shutdown_ctx->mq);
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)
+static void
+kill_task (void *cbData)
{
+ struct ShutdownContext *shutdown_ctx
+ = GNUNET_new (struct ShutdownContext);
+ struct GNUNET_MQ_Envelope *env;
struct GNUNET_MessageHeader *msg;
- struct ShutdownContext *shutdown_ctx = cls;
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_handler_end ()
+ };
- if (size < sizeof (struct GNUNET_MessageHeader))
+ kt = NULL;
+ if (trialCount == 13)
{
- LOG ("Failed to send a shutdown request\n");
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_SYSERR);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
+ LOG ("Saw enough kills, asking ARM to stop mock service for good\n");
+ GNUNET_ARM_request_service_stop (arm,
+ SERVICE,
+ NULL,
+ NULL);
+ ok = 0;
+ trialCount++;
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");
+ shutdown_ctx->mq = GNUNET_CLIENT_connecT (cfg,
+ SERVICE,
+ handlers,
+ &mq_error_handler,
+ shutdown_ctx);
+ GNUNET_assert (NULL != shutdown_ctx->mq);
+ trialCount++;
+ LOG ("Sending a shutdown request to the mock service\n");
+ env = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_ARM_STOP); /* FIXME: abuse of message type */
+ GNUNET_MQ_send (shutdown_ctx->mq,
+ env);
+ shutdown_ctx->cancel_task
+ = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
+ &service_shutdown_timeout,
+ shutdown_ctx);
}
static void
-kill_task (void *cbData, const struct GNUNET_SCHEDULER_TaskContext *tc)
+trigger_disconnect (void *cls)
{
- 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_ARM_disconnect (arm);
+ GNUNET_ARM_monitor_stop (mon);
+ if (NULL != kt)
{
- 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;
+ GNUNET_SCHEDULER_cancel (kt);
+ kt = NULL;
}
- 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)
+arm_stop_cb (void *cls,
+ enum GNUNET_ARM_RequestStatus status,
+ 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);
+ GNUNET_SCHEDULER_shutdown ();
}
static void
-srv_status (void *cls, const char *service, enum GNUNET_ARM_ServiceStatus status)
+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)
{
+ LOG ("ARM monitor started, starting mock service\n");
phase++;
- GNUNET_ARM_request_service_start (arm, SERVICE,
- GNUNET_OS_INHERIT_STD_OUT_AND_ERR, TIMEOUT, NULL, NULL);
+ GNUNET_ARM_request_service_start (arm,
+ SERVICE,
+ GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
+ NULL,
+ NULL);
return;
}
+ if (0 != strcasecmp (service, SERVICE))
+ return; /* not what we care about */
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);
+ GNUNET_assert (NULL == kt);
+ startedWaitingAt = GNUNET_TIME_absolute_get ();
+ kt = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
+ &kill_task,
+ NULL);
}
- else if ((phase == 2) && (strcasecmp (SERVICE, service) == 0))
+ else if (phase == 2)
{
/* 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);
+ waitedFor = GNUNET_TIME_absolute_get_duration (startedWaitingAt);
+ LOG ("Waited for: %s\n",
+ GNUNET_STRINGS_relative_time_to_string (waitedFor,
+ GNUNET_YES));
+
+ LOG ("do-nothing is starting, killing it...\n");
+ GNUNET_assert (NULL == kt);
+ kt = 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);
+ LOG ("do-nothing stopped working %u times, we are done here\n",
+ (unsigned int) trialCount);
+ GNUNET_ARM_request_service_stop (arm,
+ "arm",
+ &arm_stop_cb,
+ NULL);
}
}
}
static void
-arm_start_cb (void *cls, enum GNUNET_ARM_RequestStatus status, const char *servicename, enum GNUNET_ARM_Result result)
+arm_start_cb (void *cls,
+ enum GNUNET_ARM_RequestStatus status,
+ enum GNUNET_ARM_Result result)
{
GNUNET_break (status == GNUNET_ARM_REQUEST_SENT_OK);
GNUNET_break (result == GNUNET_ARM_RESULT_STARTING);
static void
-task (void *cls, char *const *args, const char *cfgfile,
+task (void *cls,
+ char *const *args,
+ const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *c)
{
cfg = c;
arm = GNUNET_ARM_connect (cfg, NULL, NULL);
- if (NULL != arm)
+ 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;
- }
+ GNUNET_break (0);
+ return;
}
+ mon = GNUNET_ARM_monitor_start (cfg,
+ &srv_status,
+ NULL);
+ if (NULL == mon)
+ {
+ GNUNET_break (0);
+ GNUNET_ARM_disconnect (arm);
+ arm = NULL;
+ return;
+ }
+ GNUNET_ARM_request_service_start (arm,
+ "arm",
+ GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
+ &arm_start_cb,
+ NULL);
+ GNUNET_SCHEDULER_add_shutdown (&trigger_disconnect,
+ NULL);
}
/* 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));
-
-
+ argv,
+ "test-exponential-backoff",
+ "nohelp",
+ options,
+ &task,
+ NULL));
return ok;
}
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_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))
+ if (GNUNET_OK != GNUNET_CONFIGURATION_write (cfg,
+ CFGFILENAME))
{
GNUNET_CONFIGURATION_destroy (cfg);
return GNUNET_SYSERR;
#if LOG_BACKOFF
killLogFileName = GNUNET_DISK_mktemp ("exponential-backoff-waiting.log");
- if (NULL == (killLogFilePtr = FOPEN (killLogFileName, "w")))
+ if (NULL == (killLogFilePtr = FOPEN (killLogFileName,
+ "w")))
{
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "fopen",
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
+ "fopen",
killLogFileName);
GNUNET_free (killLogFileName);
return GNUNET_SYSERR;