/*
This file is part of GNUnet.
- (C) 2009 Christian Grothoff (and other contributing authors)
+ 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 2, or (at your
+ 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
*/
#include "platform.h"
#include "gnunet_arm_service.h"
-#include "gnunet_client_lib.h"
-#include "gnunet_configuration_lib.h"
-#include "gnunet_program_lib.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)
-static struct GNUNET_SCHEDULER_Handle *sched;
+#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 kill_ok = GNUNET_OK;
+
+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
-arm_notify_stop (void *cls, int success)
+service_shutdown_handler (void *cls, const struct GNUNET_MessageHeader *msg)
{
- GNUNET_assert (success == GNUNET_NO);
-#if START_ARM
- GNUNET_ARM_stop_service (arm, "arm", TIMEOUT, NULL, NULL);
-#endif
+ 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)
+ */
+static 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_notify_stop (void *cls, int success)
+do_nothing_service_shutdown (struct GNUNET_CLIENT_Connection *sock,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_CLIENT_ShutdownTask cont, void *cont_cls)
{
- GNUNET_assert (success == GNUNET_NO);
+ 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
-do_nothing_notify (void *cls, int success)
+kill_task (void *cbData, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
+static void
+shutdown_cont (void *cls, int reason)
{
- GNUNET_assert (success == GNUNET_YES);
- ok = 1;
+ 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
-arm_notify (void *cls, int success)
-{
- GNUNET_assert (success == GNUNET_YES);
- GNUNET_ARM_start_service (arm, "do-nothing", TIMEOUT, &do_nothing_notify, NULL);
+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
-kill_task (void *cbData,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
+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
-do_nothing_restarted_notify_task (void *unused,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- static char a;
- static int trialCount = 0;
-
- trialCount++;
- if (trialCount >= 11) {
- if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
- fprintf(killLogFilePtr, "Reason is shutdown!\n");
- else if ((tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT) != 0)
- fprintf(killLogFilePtr, "%d.Reason is timeout!\n", trialCount);
- else if ((tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE) != 0)
- fprintf(killLogFilePtr, "%d.Service is running!\n", trialCount);
- }
-
- GNUNET_SCHEDULER_add_now (sched, &kill_task, &a); // checks if this was too fast
+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
-kill_task (void *cbData,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- int* reason;
- struct GNUNET_CLIENT_Connection * doNothingConnection = NULL;
- static struct GNUNET_TIME_Absolute startedWaitingAt;
- struct GNUNET_TIME_Relative waitedFor;
- static int trialCount = 0;
-
- reason = cbData;
- if (NULL != reason) {
- waitedFor = GNUNET_TIME_absolute_get_duration(startedWaitingAt);
- trialCount++;
- if (trialCount >= 11)
- fprintf(killLogFilePtr,
- "Trial no.%d, Started waiting at: %llu. Waited for: %llu\n",
- trialCount,
- (unsigned long long) startedWaitingAt.value,
- (unsigned long long) waitedFor.value);
- }
-
- /* Connect to the doNothing task */
- doNothingConnection = GNUNET_CLIENT_connect (sched, "do-nothing", cfg);
- if (NULL == doNothingConnection)
- fprintf(killLogFilePtr, "Unable to connect to do-nothing process!\n");
- else if (trialCount == 20) {
- GNUNET_ARM_stop_service (arm, "do-nothing", TIMEOUT, &arm_notify_stop, NULL);
- return;
- }
-
- /* Use the created connection to kill the doNothingTask */
- GNUNET_CLIENT_service_shutdown(doNothingConnection);
- sleep(0.005);
- startedWaitingAt = GNUNET_TIME_absolute_get();
- /*
- * There is something wrong here!
- * TIMEOUT value is set to 10 seconds (a drastically large value)
- * debugging is showing that the reason for which
- * do_nothing_restarted_notify_task is called is "always"
- * TIMEOUT which means that the "do-nothing" service is not running
- * however the overall execution time doesn't exceed 2 seconds
- * which means there is something tricky about the TIMOUT passed
- * to function GNUNET_CLIENT_service_test()
- */
- GNUNET_CLIENT_service_test(sched, "do-nothing", cfg, TIMEOUT, &do_nothing_restarted_notify_task, NULL);
+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,
- struct GNUNET_SCHEDULER_Handle *s,
- char *const *args,
- const char *cfgfile,
+task (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *c)
{
+ char *armconfig;
cfg = c;
- sched = s;
-
- arm = GNUNET_ARM_connect (cfg, sched, NULL);
+ 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_start_service (arm, "arm", TIMEOUT, &arm_notify, NULL);
+ GNUNET_ARM_request_service_start (arm, "arm",
+ GNUNET_OS_INHERIT_STD_OUT_AND_ERR, GNUNET_TIME_UNIT_ZERO, arm_start_cb, NULL);
#else
- arm_do_nothing (NULL, GNUNET_YES);
+ arm_start_cb (NULL, arm, GNUNET_ARM_REQUEST_SENT_OK, "arm", GNUNET_ARM_SERVICE_STARTING);
#endif
- GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_UNIT_SECONDS, &kill_task, NULL);
+ }
+ else
+ {
+ GNUNET_ARM_disconnect_and_free (arm);
+ arm = NULL;
+ }
+ }
}
+
static int
check ()
{
char *const argv[] = {
- "test-arm-api",
- "-c", "test_arm_api_data.conf",
-#if VERBOSE
- "-L", "DEBUG",
-#endif
+ "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));
-
-
+ GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
+ argv, "test-exponential-backoff",
+ "nohelp", options, &task, NULL));
+
+
return ok;
}
+
static int
-init()
-{
- 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;
- }
-
- return GNUNET_OK;
+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()
+houseKeep ()
{
- GNUNET_assert (0 == fclose (killLogFilePtr));
- GNUNET_free(killLogFileName);
+#if LOG_BACKOFF
+ GNUNET_assert (0 == fclose (killLogFilePtr));
+ GNUNET_free (killLogFileName);
+#endif
+ (void) unlink (CFGFILENAME);
}
{
int ret;
-
GNUNET_log_setup ("test-exponential-backoff",
-#if VERBOSE
- "DEBUG",
-#else
- "WARNING",
-#endif
- NULL);
-
- init();
+ "WARNING",
+ NULL);
+
+ if (GNUNET_OK != init ())
+ return 1;
ret = check ();
- houseKeep();
+ houseKeep ();
return ret;
}
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