2 * collectd - src/collectdctl.c
3 * Copyright (C) 2010 Håkon J Dugstad Johnsen
4 * Copyright (C) 2010 Sebastian Harl
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Håkon J Dugstad Johnsen <hakon-dugstad.johnsen at telenor.com>
21 * Sebastian "tokkee" Harl <sh@tokkee.org>
28 #include "libcollectdclient/client.h"
42 #define DEFAULT_SOCK LOCALSTATEDIR"/run/"PACKAGE_NAME"-unixsock"
47 static void exit_usage (const char *name, int status) {
48 fprintf ((status == 0) ? stdout : stderr,
49 "Usage: %s [options] <command> [cmd options]\n\n"
51 "Available options:\n"
52 " -s Path to collectd's UNIX socket.\n"
53 " Default: "DEFAULT_SOCK"\n"
55 "\n -h Display this help and exit.\n"
57 "\nAvailable commands:\n\n"
59 " * getval <identifier>\n"
60 " * flush [timeout=<seconds>] [plugin=<name>] [identifier=<id>]\n"
65 "An identifier has the following format:\n\n"
67 " [<hostname>/]<plugin>[-<plugin_instance>]/<type>[-<type_instance>]\n\n"
69 "Hostname defaults to the local hostname if omitted (e.g., uptime/uptime).\n"
70 "No error is returned if the specified identifier does not exist.\n"
72 "\n"PACKAGE" "VERSION", http://collectd.org/\n"
73 "by Florian octo Forster <octo@verplant.org>\n"
74 "for contributions see `AUTHORS'\n"
79 /* Count the number of occurrences of the character 'chr'
80 * in the specified string. */
81 static int count_chars (const char *str, char chr) {
84 while (*str != '\0') {
94 static int array_grow (void **array, int *array_len, size_t elem_size)
98 assert ((array != NULL) && (array_len != NULL));
100 tmp = realloc (*array, (*array_len + 1) * elem_size);
102 fprintf (stderr, "ERROR: Failed to allocate memory.\n");
111 static int parse_identifier (lcc_connection_t *c,
112 const char *value, lcc_identifier_t *ident)
115 char ident_str[1024] = "";
120 n_slashes = count_chars (value, '/');
121 if (n_slashes == 1) {
122 /* The user has omitted the hostname part of the identifier
123 * (there is only one '/' in the identifier)
124 * Let's add the local hostname */
125 if (gethostname (hostname, sizeof (hostname)) != 0) {
126 fprintf (stderr, "ERROR: Failed to get local hostname: %s",
130 hostname[sizeof (hostname) - 1] = '\0';
132 snprintf (ident_str, sizeof (ident_str), "%s/%s", hostname, value);
133 ident_str[sizeof(ident_str) - 1] = '\0';
136 strncpy (ident_str, value, sizeof (ident_str));
137 ident_str[sizeof (ident_str) - 1] = '\0';
140 status = lcc_string_to_identifier (c, ident, ident_str);
142 fprintf (stderr, "ERROR: Failed to parse identifier ``%s'': %s.\n",
143 ident_str, lcc_strerror(c));
147 } /* parse_identifier */
149 static int getval (lcc_connection_t *c, int argc, char **argv)
151 lcc_identifier_t ident;
153 size_t ret_values_num = 0;
154 gauge_t *ret_values = NULL;
155 char **ret_values_names = NULL;
160 assert (strcasecmp (argv[0], "getval") == 0);
163 fprintf (stderr, "ERROR: getval: Missing identifier.\n");
167 memset (&ident, 0, sizeof (ident));
168 status = parse_identifier (c, argv[1], &ident);
172 #define BAIL_OUT(s) \
174 if (ret_values != NULL) \
176 if (ret_values_names != NULL) { \
177 for (i = 0; i < ret_values_num; ++i) \
178 free (ret_values_names[i]); \
179 free (ret_values_names); \
181 ret_values_num = 0; \
185 status = lcc_getval (c, &ident,
186 &ret_values_num, &ret_values, &ret_values_names);
188 fprintf (stderr, "ERROR: %s\n", lcc_strerror (c));
192 for (i = 0; i < ret_values_num; ++i)
193 printf ("%s=%e\n", ret_values_names[i], ret_values[i]);
198 static int flush (lcc_connection_t *c, int argc, char **argv)
202 lcc_identifier_t *identifiers = NULL;
203 int identifiers_num = 0;
205 char **plugins = NULL;
211 assert (strcasecmp (argv[0], "flush") == 0);
213 #define BAIL_OUT(s) \
215 if (identifiers != NULL) \
216 free (identifiers); \
217 identifiers_num = 0; \
218 if (plugins != NULL) \
224 for (i = 1; i < argc; ++i) {
228 value = strchr (argv[i], (int)'=');
231 fprintf (stderr, "ERROR: flush: Invalid option ``%s''.\n", argv[i]);
238 if (strcasecmp (key, "timeout") == 0) {
241 timeout = strtol (value, &endptr, 0);
243 if (endptr == value) {
244 fprintf (stderr, "ERROR: Failed to parse timeout as number: %s.\n",
248 else if ((endptr != NULL) && (*endptr != '\0')) {
249 fprintf (stderr, "WARNING: Ignoring trailing garbage after timeout: "
253 else if (strcasecmp (key, "plugin") == 0) {
254 status = array_grow ((void **)&plugins, &plugins_num,
259 plugins[plugins_num - 1] = value;
261 else if (strcasecmp (key, "identifier") == 0) {
262 status = array_grow ((void **)&identifiers, &identifiers_num,
263 sizeof (*identifiers));
267 memset (identifiers + (identifiers_num - 1), 0, sizeof (*identifiers));
268 status = parse_identifier (c, value,
269 identifiers + (identifiers_num - 1));
275 if (plugins_num == 0) {
276 status = array_grow ((void **)&plugins, &plugins_num, sizeof (*plugins));
280 assert (plugins_num == 1);
284 for (i = 0; i < plugins_num; ++i) {
285 if (identifiers_num == 0) {
286 status = lcc_flush (c, plugins[i], NULL, timeout);
288 fprintf (stderr, "ERROR: Failed to flush plugin `%s': %s.\n",
289 (plugins[i] == NULL) ? "(all)" : plugins[i], lcc_strerror (c));
294 for (j = 0; j < identifiers_num; ++j) {
295 status = lcc_flush (c, plugins[i], identifiers + j, timeout);
299 lcc_identifier_to_string (c, id, sizeof (id), identifiers + j);
300 fprintf (stderr, "ERROR: Failed to flush plugin `%s', "
301 "identifier `%s': %s.\n",
302 (plugins[i] == NULL) ? "(all)" : plugins[i],
303 id, lcc_strerror (c));
313 static int listval (lcc_connection_t *c, int argc, char **argv)
315 lcc_identifier_t *ret_ident = NULL;
316 size_t ret_ident_num = 0;
321 assert (strcasecmp (argv[0], "listval") == 0);
324 fprintf (stderr, "ERROR: listval: Does not accept any arguments.\n");
328 #define BAIL_OUT(s) \
330 if (ret_ident != NULL) \
336 status = lcc_listval (c, &ret_ident, &ret_ident_num);
338 fprintf (stderr, "ERROR: %s\n", lcc_strerror (c));
342 for (i = 0; i < ret_ident_num; ++i) {
345 status = lcc_identifier_to_string (c, id, sizeof (id), ret_ident + i);
347 fprintf (stderr, "ERROR: listval: Failed to convert returned "
348 "identifier to a string: %s\n", lcc_strerror (c));
358 int main (int argc, char **argv) {
359 char address[1024] = "unix:"DEFAULT_SOCK;
368 c = getopt (argc, argv, "s:h");
375 snprintf (address, sizeof (address), "unix:%s", optarg);
376 address[sizeof (address) - 1] = '\0';
379 exit_usage (argv[0], 0);
382 exit_usage (argv[0], 1);
386 if (optind >= argc) {
387 fprintf (stderr, "%s: missing command\n", argv[0]);
388 exit_usage (argv[0], 1);
392 status = lcc_connect (address, &c);
394 fprintf (stderr, "ERROR: Failed to connect to daemon at %s: %s.\n",
395 address, strerror (errno));
399 if (strcasecmp (argv[optind], "getval") == 0)
400 status = getval (c, argc - optind, argv + optind);
401 else if (strcasecmp (argv[optind], "flush") == 0)
402 status = flush (c, argc - optind, argv + optind);
403 else if (strcasecmp (argv[optind], "listval") == 0)
404 status = listval (c, argc - optind, argv + optind);
406 fprintf (stderr, "%s: invalid command: %s\n", argv[0], argv[optind]);
417 /* vim: set sw=2 ts=2 tw=78 expandtab : */