From: Florian Forster Date: Thu, 11 Jul 2013 08:43:01 +0000 (+0200) Subject: Initial import. X-Git-Tag: v1.0.0~2 X-Git-Url: https://git.octo.it/?p=statsd-tg.git;a=commitdiff_plain;h=51aaa74b07ff9db16fdf977d9f7313f58a99344e Initial import. --- 51aaa74b07ff9db16fdf977d9f7313f58a99344e diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..a039f3b --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Florian Forster diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..d159169 --- /dev/null +++ b/COPYING @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..e69de29 diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..af437a6 --- /dev/null +++ b/Makefile.am @@ -0,0 +1 @@ +SUBDIRS = src diff --git a/NEWS b/NEWS new file mode 100644 index 0000000..e69de29 diff --git a/README b/README new file mode 100644 index 0000000..a5f2458 --- /dev/null +++ b/README @@ -0,0 +1,36 @@ + statsd-tg – StatsD traffig generator +══════════════════════════════════════ +http://octo.it/statsd-tg + +About +━━━━━ + + statsd-tg is a traffic generator for StatsD. It generates dummy traffic that + can be used to stress-test / benchmark StatsD implementations and possibly + perform profiling. + + +Operation +━━━━━━━━━ + + statsd-tg generates a set of dummy counters, timers, gauges and sets. The + number of each type of event can be configured using command line switches. + It then randomly triggers these events using a PRNG which distributes these + events uniformly. This means that if you configure 50 counters, 30 timers, + 15 gauges and 5 sets, counters should make up aproximately half of the + generated traffic, timers 30%, gauges 15% and sets 5%. + + +Licensing terms +━━━━━━━━━━━━━━━ + + statsd-tg is licensed under the “GNU General Public License” (GPL), + version 2. The exact licensing terms can be found in the file + “COPYING” included in the source distribution of statsd-tg. + + +Author +━━━━━━ + + Florian “octo” Forster + diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..93f4cc0 --- /dev/null +++ b/configure.ac @@ -0,0 +1,29 @@ +AC_PREREQ([2.68]) +AC_INIT([statsd-tg], [1.0.0], [ff@octo.it]) +AC_CONFIG_SRCDIR([src/statsd-tg.c]) +AC_CONFIG_HEADERS([src/config.h]) + +AM_INIT_AUTOMAKE([tar-pax dist-bzip2]) + +AC_DEFINE([_ISOC99_SOURCE], [], [Request C99 mode]) +AC_DEFINE([_POSIX_C_SOURCE], [200112L], [Request POSIX 2001]) +AC_DEFINE([_XOPEN_SOURCE], [500], [Request XOpen issue 5]) + +# Checks for programs. +AC_PROG_CC + +# Checks for libraries. + +# Checks for header files. +AC_CHECK_HEADERS([netdb.h stdlib.h string.h sys/socket.h unistd.h]) + +# Checks for typedefs, structures, and compiler characteristics. +AC_TYPE_SIZE_T +AC_TYPE_SSIZE_T + +# Checks for library functions. +AC_CHECK_FUNCS([memset socket strerror strtol]) + +AC_CONFIG_FILES([Makefile + src/Makefile]) +AC_OUTPUT diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..fe34a05 --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,3 @@ +bin_PROGRAMS = statsd-tg + +statsd_tg_SOURCES = statsd-tg.c diff --git a/src/statsd-tg.c b/src/statsd-tg.c new file mode 100644 index 0000000..8815a8b --- /dev/null +++ b/src/statsd-tg.c @@ -0,0 +1,309 @@ +/** + * collectd-td - collectd traffic generator + * Copyright (C) 2013 Florian octo Forster + * + * This program 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; only version 2 of the License is applicable. + * + * This program 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 this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: + * Florian Forster + **/ + +#if HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#if !__GNUC__ +# define __attribute__(x) /**/ +#endif + +#define DEF_NODE "localhost" +#define DEF_SERVICE "8125" + +#define DEF_NUM_COUNTERS 1000 +#define DEF_NUM_TIMERS 1000 +#define DEF_NUM_GAUGES 100 +#define DEF_NUM_SETS 100 +#define DEF_SET_SIZE 128 + +static int conf_num_counters = DEF_NUM_COUNTERS; +static int conf_num_timers = DEF_NUM_TIMERS; +static int conf_num_gauges = DEF_NUM_GAUGES; +static int conf_num_sets = DEF_NUM_SETS; +static int conf_set_size = DEF_SET_SIZE; +static const char *conf_node = DEF_NODE; +static const char *conf_service = DEF_SERVICE; + +static int sock = -1; + +static struct sigaction sigint_action; +static struct sigaction sigterm_action; + +static _Bool loop = 1; + +__attribute__((noreturn)) +static void exit_usage (int exit_status) /* {{{ */ +{ + fprintf ((exit_status == EXIT_FAILURE) ? stderr : stdout, + PACKAGE_NAME" -- statsd traffic generator\n" + "\n" + " Usage: statsd-ng [OPTION]\n" + "\n" + " Valid options:\n" + " -c Number of counters to emulate. (Default: %i)\n" + " -t Number of timers to emulate. (Default: %i)\n" + " -g Number of gauges to emulate. (Default: %i)\n" + " -s Number of sets to emulate. (Default: %i)\n" + " -S Number of elements in each set. (Default: %i)\n" + " -d Destination address of the network packets.\n" + " (Default: "DEF_NODE")\n" + " -D Destination port of the network packets.\n" + " (Default: "DEF_SERVICE")\n" + " -h Print usage information (this output).\n" + "\n" + "Copyright (C) 2013 Florian Forster\n" + "Licensed under the GNU General Public License, version 2 (GPLv2)\n", + DEF_NUM_COUNTERS, DEF_NUM_TIMERS, DEF_NUM_GAUGES, + DEF_NUM_SETS, DEF_SET_SIZE); + exit (exit_status); +} /* }}} void exit_usage */ + +static void signal_handler (int signal __attribute__((unused))) /* {{{ */ +{ + loop = 0; +} /* }}} void signal_handler */ + +static int sock_open (void) /* {{{ */ +{ + struct addrinfo ai_hints; + struct addrinfo *ai_list = NULL; + struct addrinfo *ai_ptr; + + int status; + + memset (&ai_hints, 0, sizeof (ai_hints)); +#ifdef AI_ADDRCONFIG + ai_hints.ai_flags = AI_ADDRCONFIG; +#endif + ai_hints.ai_family = AF_UNSPEC; + ai_hints.ai_socktype = SOCK_DGRAM; + + status = getaddrinfo (conf_node, conf_service, &ai_hints, &ai_list); + if (status != 0) + { + fprintf (stderr, "getaddrinfo failed: %s\n", gai_strerror (status)); + exit (EXIT_FAILURE); + } + + for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) + { + int fd; + + fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol); + if (fd < 0) + { + continue; + } + + status = connect (fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen); + if (status != 0) + { + close (fd); + continue; + } + + sock = fd; + break; + } + + freeaddrinfo (ai_list); + + if (sock < 0) + { + fprintf (stderr, "Opening network socket failed.\n"); + exit (EXIT_FAILURE); + } + + return (0); +} /* }}} int sock_open */ + +static int send_random_event (void) /* {{{ */ +{ + long conf_num_total = conf_num_counters + conf_num_timers + + conf_num_gauges + conf_num_sets; + /* Not completely fair, but good enough for our use-case. */ + long rnd = lrand48 () % conf_num_total; + + long value = lrand48 (); + char *type; + + char buffer[1024]; + int buffer_size; + ssize_t status; + + if (rnd < conf_num_counters) + { + /* counter */ + type = "c"; + value = (value % 8) + 1; + } + else if (rnd < (conf_num_counters + conf_num_timers)) + { + /* timer */ + type = "ms"; + value = (value % 1024) + 1; + } + else if (rnd < (conf_num_counters + conf_num_timers + conf_num_gauges)) + { + /* gauge */ + type = "g"; + value = (value % 128) - 64; + } + else + { + /* set */ + type = "s"; + value %= conf_set_size; + } + + buffer_size = snprintf (buffer, sizeof (buffer), "%06li:%li|%s", + rnd, value, type); + assert (buffer_size > 0); + if (((size_t) buffer_size) >= sizeof (buffer)) + return (-1); + assert (buffer[buffer_size] == 0); + + status = send (sock, buffer, (size_t) buffer_size, /* flags = */ 0); + if (status < 0) + { + fprintf (stderr, "send failed: %s", strerror (errno)); + return (-1); + } + + return (0); +} /* }}} int send_random_event */ + +static int get_integer_opt (const char *str, int *ret_value) /* {{{ */ +{ + char *endptr; + int tmp; + + errno = 0; + endptr = NULL; + tmp = (int) strtol (str, &endptr, /* base = */ 0); + if (errno != 0) + { + fprintf (stderr, "Unable to parse option as a number: \"%s\": %s\n", + str, strerror (errno)); + exit (EXIT_FAILURE); + } + else if (endptr == str) + { + fprintf (stderr, "Unable to parse option as a number: \"%s\"\n", str); + exit (EXIT_FAILURE); + } + else if (*endptr != 0) + { + fprintf (stderr, "Garbage after end of value: \"%s\"\n", str); + exit (EXIT_FAILURE); + } + + *ret_value = tmp; + return (0); +} /* }}} int get_integer_opt */ + +static int read_options (int argc, char **argv) /* {{{ */ +{ + int opt; + + while ((opt = getopt (argc, argv, "c:t:g:s:S:d:D:h")) != -1) + { + switch (opt) + { + case 'c': + get_integer_opt (optarg, &conf_num_counters); + break; + + case 't': + get_integer_opt (optarg, &conf_num_timers); + break; + + case 'g': + get_integer_opt (optarg, &conf_num_gauges); + break; + + case 's': + get_integer_opt (optarg, &conf_num_sets); + break; + + case 'S': + get_integer_opt (optarg, &conf_set_size); + break; + + case 'd': + conf_node = optarg; + break; + + case 'D': + conf_service = optarg; + break; + + case 'h': + exit_usage (EXIT_SUCCESS); + + default: + exit_usage (EXIT_FAILURE); + } /* switch (opt) */ + } /* while (getopt) */ + + return (0); +} /* }}} int read_options */ + +int main (int argc, char **argv) /* {{{ */ +{ + read_options (argc, argv); + + sigint_action.sa_handler = signal_handler; + sigaction (SIGINT, &sigint_action, /* old = */ NULL); + + sigterm_action.sa_handler = signal_handler; + sigaction (SIGTERM, &sigterm_action, /* old = */ NULL); + + sock_open (); + + while (loop) + { + send_random_event (); + } + + close (sock); + sock = -1; + + exit (EXIT_SUCCESS); + return (0); +} /* }}} int main */ + +/* vim: set sw=2 sts=2 et fdm=marker : */