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authorSree Harsha Totakura <totakura@in.tum.de>2014-04-07 09:41:26 +0000
committerSree Harsha Totakura <totakura@in.tum.de>2014-04-07 09:41:26 +0000
commit906f67b113fa2a9b27ab7a333d1e25cb0b500140 (patch)
tree651597190f6e30d97ce46cd4c1d692004015c6a3 /src/nse/gnunet-nse.c
parentdf0a5da00aeb71ec3e6eb5937e800f2e6fd269ee (diff)
Add gnunet-nse program to show network size estimates.
Diffstat (limited to 'src/nse/gnunet-nse.c')
-rw-r--r--src/nse/gnunet-nse.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/src/nse/gnunet-nse.c b/src/nse/gnunet-nse.c
new file mode 100644
index 000000000..ec2ad26d3
--- /dev/null
+++ b/src/nse/gnunet-nse.c
@@ -0,0 +1,172 @@
+/*
+ This file is part of GNUnet
+ (C) 2008--2014 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 nse/gnunet-nse.c
+ * @brief Program to display network size estimates from the NSE service
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#include "platform.h"
+#include "gnunet_nse_service.h"
+
+/**
+ * Handle to our configuration
+ */
+static struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * The handle to the NSE service
+ */
+static struct GNUNET_NSE_Handle *nse;
+
+/**
+ * The handle to test if NSE service is running or not
+ */
+static struct GNUNET_CLIENT_TestHandle *test;
+
+/**
+ * Shutdown task
+ */
+static GNUNET_SCHEDULER_TaskIdentifier shutdown_task;
+
+/**
+ * The program status; 0 for success.
+ */
+static int status;
+
+
+/**
+ * Task to shutdown and clean up all state
+ *
+ * @param cls NULL
+ * @param tc the scheduler task context
+ */
+static void
+do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ shutdown_task = GNUNET_SCHEDULER_NO_TASK;
+ if (NULL != test)
+ GNUNET_CLIENT_service_test_cancel (test);
+ if (NULL != nse)
+ GNUNET_NSE_disconnect (nse);
+ if (NULL != cfg)
+ GNUNET_CONFIGURATION_destroy (cfg);
+}
+
+
+/**
+ * Callback to call when network size estimate is updated.
+ *
+ * @param cls NULL
+ * @param timestamp server timestamp
+ * @param estimate the value of the current network size estimate
+ * @param std_dev standard deviation (rounded down to nearest integer)
+ * of the size estimation values seen
+ */
+static void
+handle_estimate (void *cls,
+ struct GNUNET_TIME_Absolute timestamp,
+ double estimate, double std_dev)
+{
+ FPRINTF (stdout, "%llu %f %f %f\n",
+ (unsigned long long) timestamp.abs_value_us,
+ GNUNET_NSE_log_estimate_to_n (estimate),
+ estimate,
+ std_dev);
+}
+
+
+/**
+ * Function called with the result on the service test for the NSE service
+ *
+ * @param cls NULL
+ * @param result #GNUNET_YES if the service is running,
+ * #GNUNET_NO if the service is not running
+ * #GNUNET_SYSERR if the configuration is invalid
+ */
+static void
+nse_test_result (void *cls, int result)
+{
+ test = NULL;
+ switch (result)
+ {
+ case GNUNET_YES:
+ nse = GNUNET_NSE_connect (cfg, &handle_estimate, NULL);
+ status = 0;
+ break;
+ case GNUNET_NO:
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("NSE service is not running\n"));
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ default:
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Error while checking if NSE service is running or not\n"));
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+}
+
+
+/**
+ * Actual main function that runs the emulation.
+ *
+ * @param cls unused
+ * @param args remaining args, unused
+ * @param cfgfile name of the configuration
+ * @param cfg configuration handle
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *_cfg)
+{
+ cfg = GNUNET_CONFIGURATION_dup (_cfg);
+ test = GNUNET_CLIENT_service_test ("nse",
+ cfg,
+ GNUNET_TIME_UNIT_SECONDS,
+ nse_test_result,
+ NULL);
+ shutdown_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+ &do_shutdown, NULL);
+}
+
+
+/**
+ * Main function.
+ *
+ * @return 0 on success
+ */
+int
+main (int argc, char *const *argv)
+{
+ static struct GNUNET_GETOPT_CommandLineOption options[] = {
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ status = 1;
+ if (GNUNET_OK !=
+ GNUNET_PROGRAM_run (argc, argv, "gnunet-nse",
+ gettext_noop
+ ("Show network size estimates from NSE service."),
+ options, &run, NULL))
+ return 2;
+ return status;
+}