| /* Rate counter and statsd test application */ |
| /* (C) 2022 by by sysmocom - s.f.m.c. GmbH |
| * All Rights Reserved |
| * |
| * 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; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * 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. |
| * |
| */ |
| |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <getopt.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <inttypes.h> |
| |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/stats.h> |
| #include <osmocom/ctrl/control_if.h> |
| #include <osmocom/ctrl/control_vty.h> |
| #include <osmocom/vty/vty.h> |
| #include <osmocom/vty/telnet_interface.h> |
| #include <osmocom/vty/command.h> |
| #include <osmocom/vty/ports.h> |
| #include <osmocom/vty/tdef_vty.h> |
| #include <osmocom/vty/logging.h> |
| #include <osmocom/vty/stats.h> |
| #include <osmocom/vty/misc.h> |
| |
| #include "../../config.h" |
| |
| void *tall_statdummy_ctx = NULL; |
| static bool quit = false; |
| static bool config_given = false; |
| struct rate_ctr_group *g_ctrg; |
| |
| enum dummy_rate_ctr_idx { |
| DUMMY_VTY = 0, |
| DUMMY_AUTO, |
| }; |
| |
| static void print_help(void) |
| { |
| printf("Some useful options:\n" |
| " -h --help This text\n" |
| " -c --config-file Specify the filename of the config file\n" |
| " -V --version Print version\n" |
| "\nVTY reference generation:\n" |
| " --vty-ref-mode MODE VTY reference generation mode (e.g. 'expert').\n" |
| " --vty-ref-xml Generate the VTY reference XML output and exit.\n" |
| ); |
| } |
| |
| static void handle_long_options(const char *prog_name, const int long_option) |
| { |
| static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT; |
| |
| switch (long_option) { |
| case 1: |
| vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg); |
| if (vty_ref_mode < 0) { |
| fprintf(stderr, "%s: Unknown VTY reference generation mode '%s'\n", prog_name, optarg); |
| exit(2); |
| } |
| break; |
| case 2: |
| fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n", |
| get_value_string(vty_ref_gen_mode_names, vty_ref_mode), |
| get_value_string(vty_ref_gen_mode_desc, vty_ref_mode)); |
| vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode); |
| exit(0); |
| default: |
| fprintf(stderr, "%s: error parsing cmdline options\n", prog_name); |
| exit(2); |
| } |
| } |
| |
| static char *handle_options(int argc, char **argv) |
| { |
| char *config_file = NULL; |
| |
| while (1) { |
| int option_idx = 0, c; |
| static int long_option = 0; |
| static const struct option long_options[] = { |
| { "help", 0, 0, 'h' }, |
| { "config-file", 1, 0, 'c' }, |
| { "version", 0, 0, 'V' }, |
| { "vty-ref-mode", 1, &long_option, 1 }, |
| { "vty-ref-xml", 0, &long_option, 2 }, |
| { 0, 0, 0, 0 } |
| }; |
| |
| c = getopt_long(argc, argv, "hc:V", long_options, &option_idx); |
| if (c == -1) |
| break; |
| |
| switch (c) { |
| case 'h': |
| print_help(); |
| exit(0); |
| break; |
| case 0: |
| handle_long_options(argv[0], long_option); |
| break; |
| case 'c': |
| if (config_file) |
| free(config_file); |
| config_file = optarg; |
| config_given = true; |
| break; |
| case 'V': |
| print_version(1); |
| exit(0); |
| break; |
| default: |
| fprintf(stderr, "Unknown option '%c'\n", c); |
| exit(0); |
| break; |
| } |
| } |
| |
| if (!config_file) |
| return "osmo-stat-dummy.cfg"; |
| |
| return config_file; |
| } |
| |
| void sighandler(int sigset) |
| { |
| if (sigset == SIGPIPE) |
| return; |
| |
| fprintf(stderr, "Signal %d received.\n", sigset); |
| |
| switch (sigset) { |
| case SIGINT: |
| case SIGTERM: |
| /* If another signal is received afterwards, the program |
| * is terminated without finishing shutdown process. |
| */ |
| signal(SIGINT, SIG_DFL); |
| signal(SIGTERM, SIG_DFL); |
| signal(SIGPIPE, SIG_DFL); |
| signal(SIGABRT, SIG_DFL); |
| signal(SIGUSR1, SIG_DFL); |
| signal(SIGUSR2, SIG_DFL); |
| |
| quit = 1; |
| break; |
| case SIGABRT: |
| /* in case of abort, we want to obtain a talloc report and |
| * then run default SIGABRT handler, who will generate coredump |
| * and abort the process. abort() should do this for us after we |
| * return, but program wouldn't exit if an external SIGABRT is |
| * received. |
| */ |
| talloc_report_full(tall_statdummy_ctx, stderr); |
| signal(SIGABRT, SIG_DFL); |
| raise(SIGABRT); |
| break; |
| case SIGUSR1: |
| case SIGUSR2: |
| talloc_report_full(tall_statdummy_ctx, stderr); |
| break; |
| } |
| } |
| |
| static int rate_ctr_timer_cb(struct osmo_fd *ofd, unsigned int what) |
| { |
| uint64_t expire_count; |
| int rc; |
| |
| /* check that the timer has actually expired */ |
| if (!(what & OSMO_FD_READ)) |
| return 0; |
| |
| /* read from timerfd: number of expirations of periodic timer */ |
| rc = read(ofd->fd, (void *) &expire_count, sizeof(expire_count)); |
| if (rc < 0 && errno == EAGAIN) |
| return 0; |
| |
| OSMO_ASSERT(rc == sizeof(expire_count)); |
| |
| if (expire_count > 1) |
| LOGP(DLGLOBAL, LOGL_NOTICE, "Stats timer expire_count=%" PRIu64 ": We missed %" PRIu64 " timers\n", |
| expire_count, expire_count-1); |
| |
| /* Increment the counter value */ |
| rate_ctr_inc(rate_ctr_group_get_ctr(g_ctrg, DUMMY_AUTO)); |
| |
| return 0; |
| } |
| |
| DEFUN(update_rate_ctr, update_rate_ctr_cmd, |
| "update-rate-ctr <0-100000>", |
| "Update dummy rate counter\n" |
| "Value to add to rate counter\n") |
| { |
| rate_ctr_add(rate_ctr_group_get_ctr(g_ctrg, DUMMY_VTY), atoi(argv[0])); |
| |
| return CMD_SUCCESS; |
| } |
| |
| static int statdummy_vty_init(void) |
| { |
| install_element_ve(&update_rate_ctr_cmd); |
| |
| return 0; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct log_info log_info = {}; |
| char *config_file; |
| void *ctx = tall_statdummy_ctx = talloc_named_const(NULL, 0, "osmo-stat-dummy"); |
| struct ctrl_handle *ctrl; |
| struct osmo_fd rate_ctr_timer = { .fd = -1 }; |
| struct timespec ts_interval = { .tv_sec = 0, .tv_nsec = 500000000 }; /* 0.5 seconds */ |
| int rc = 0; |
| |
| const char vty_copyright[] = |
| "Copyright (C) 2022 by by sysmocom - s.f.m.c. GmbH\r\n" |
| "Author: Max Suraev <msuraev@sysmocom.de>\r\n" |
| "License GNU GPL version 3 or later\r\n" |
| "This is free software: you are free to change and redistribute it.\r\n" |
| "There is NO WARRANTY, to the extent permitted by law.\r\n"; |
| |
| struct vty_app_info vty_info = { |
| .name = "OsmoSTATdummy", |
| .version = PACKAGE_VERSION, |
| .copyright = vty_copyright, |
| .tall_ctx = ctx |
| }; |
| |
| const struct rate_ctr_desc dummy_ctr_desc[] = { |
| [DUMMY_VTY] = { "dummy:vty", "Dummy counter updated via VTY" }, |
| [DUMMY_AUTO] = { "dummy:auto", "Dummy counter autoupdated via timer" }, |
| }; |
| |
| const struct rate_ctr_group_desc dummy_ctrg_desc = { |
| "dummy", |
| "dummy stat tester", |
| OSMO_STATS_CLASS_GLOBAL, |
| ARRAY_SIZE(dummy_ctr_desc), |
| dummy_ctr_desc, |
| }; |
| |
| osmo_init_logging2(ctx, &log_info); |
| log_set_use_color(osmo_stderr_target, 0); |
| log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE); |
| log_set_log_level(osmo_stderr_target, LOGL_INFO); |
| |
| msgb_talloc_ctx_init(ctx, 0); |
| |
| vty_init(&vty_info); |
| ctrl_vty_init(ctx); |
| logging_vty_add_cmds(); |
| osmo_stats_vty_add_cmds(); |
| osmo_talloc_vty_add_cmds(); |
| |
| config_file = handle_options(argc, argv); |
| |
| statdummy_vty_init(); |
| rc = vty_read_config_file(config_file, NULL); |
| if (rc < 0) { |
| if (config_given) { |
| fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file); |
| exit(1); |
| } |
| fprintf(stderr, "No config file: '%s' Using default config.\n", config_file); |
| } |
| |
| rc = telnet_init_default(ctx, NULL, -1); |
| if (rc < 0) { |
| fprintf(stderr, "Error initializing telnet\n"); |
| exit(1); |
| } |
| |
| ctrl = ctrl_interface_setup(NULL, 1234, NULL); |
| if (!ctrl) { |
| fprintf(stderr, "Failed to initialize control interface. Exiting.\n"); |
| exit(1); |
| } |
| |
| g_ctrg = rate_ctr_group_alloc(ctx, &dummy_ctrg_desc, 0); |
| if (!g_ctrg) { |
| fprintf(stderr, "Failed to initialize rate counters. Exiting.\n"); |
| return -1; |
| } |
| |
| osmo_stats_init(ctx); |
| rate_ctr_init(ctx); |
| |
| rc = osmo_timerfd_setup(&rate_ctr_timer, rate_ctr_timer_cb, NULL); |
| if (rc < 0) { |
| LOGP(DLGLOBAL, LOGL_ERROR, "Failed to setup the timer with error code %d (fd=%d)\n", |
| rc, rate_ctr_timer.fd); |
| return rc; |
| } |
| |
| rc = osmo_timerfd_schedule(&rate_ctr_timer, NULL, &ts_interval); |
| if (rc < 0) { |
| LOGP(DLGLOBAL, LOGL_ERROR, "Failed to schedule the timer with error code %d (fd=%d)\n", |
| rc, rate_ctr_timer.fd); |
| } |
| |
| signal(SIGINT, sighandler); |
| signal(SIGTERM, sighandler); |
| signal(SIGPIPE, sighandler); |
| signal(SIGABRT, sighandler); |
| signal(SIGUSR1, sighandler); |
| signal(SIGUSR2, sighandler); |
| osmo_init_ignore_signals(); |
| |
| while (!quit) { |
| osmo_select_main(0); |
| } |
| |
| telnet_exit(); |
| |
| talloc_report_full(tall_statdummy_ctx, stderr); |
| talloc_free(tall_statdummy_ctx); |
| |
| return 0; |
| } |