2 * collectd - src/ping.c
3 * Copyright (C) 2005,2006 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at verplant.org>
25 #include "configfile.h"
27 #include <netinet/in.h>
28 #include "liboping/oping.h"
38 struct hostlist_s *next;
40 typedef struct hostlist_s hostlist_t;
45 static pingobj_t *pingobj = NULL;
46 static hostlist_t *hosts = NULL;
48 static data_source_t dsrc[1] =
50 {"ping", DS_TYPE_GAUGE, 0, 65535.0},
53 static data_set_t ds =
58 static const char *config_keys[] =
64 static int config_keys_num = 2;
69 static void add_hosts (void)
76 while (hl_this != NULL)
78 DEBUG ("ping plugin: host = %s, wait_left = %i, "
79 "wait_time = %i, next = %p",
80 hl_this->host, hl_this->wait_left,
81 hl_this->wait_time, (void *) hl_this->next);
83 if (hl_this->wait_left <= 0)
85 if (ping_host_add (pingobj, hl_this->host) == 0)
87 DEBUG ("ping plugin: Successfully added host %s", hl_this->host);
88 /* Remove the host from the linked list */
90 hl_prev->next = hl_this->next;
92 hosts = hl_this->next;
95 hl_this = (hl_prev != NULL) ? hl_prev : hosts;
99 WARNING ("ping plugin: Failed adding host "
100 "`%s': %s", hl_this->host,
101 ping_get_error (pingobj));
102 hl_this->wait_left = hl_this->wait_time;
103 hl_this->wait_time *= 2;
104 if (hl_this->wait_time > 86400)
105 hl_this->wait_time = 86400;
110 hl_this->wait_left -= interval_g;
116 hl_this = hl_this->next;
121 static int ping_init (void)
129 static int ping_config (const char *key, const char *value)
133 if ((pingobj = ping_construct ()) == NULL)
135 ERROR ("ping plugin: `ping_construct' failed.");
140 if (strcasecmp (key, "host") == 0)
145 if ((hl = (hostlist_t *) malloc (sizeof (hostlist_t))) == NULL)
148 ERROR ("ping plugin: malloc failed: %s",
149 sstrerror (errno, errbuf,
153 if ((host = strdup (value)) == NULL)
157 ERROR ("ping plugin: strdup failed: %s",
158 sstrerror (errno, errbuf,
164 hl->wait_time = 2 * interval_g;
169 else if (strcasecmp (key, "ttl") == 0)
171 int ttl = atoi (value);
172 if (ping_setopt (pingobj, PING_DEF_TIMEOUT, (void *) &ttl))
174 WARNING ("ping: liboping did not accept the TTL value %i", ttl);
186 static void ping_submit (char *host, double latency)
189 value_list_t vl = VALUE_LIST_INIT;
191 values[0].gauge = latency;
195 vl.time = time (NULL);
196 strcpy (vl.host, hostname_g);
197 strcpy (vl.plugin, "ping");
198 strcpy (vl.plugin_instance, "");
199 strncpy (vl.type_instance, host, sizeof (vl.type_instance));
201 plugin_dispatch_values ("ping", &vl);
204 static int ping_read (void)
206 pingobj_iter_t *iter;
219 if (ping_send (pingobj) < 0)
221 ERROR ("ping plugin: `ping_send' failed: %s",
222 ping_get_error (pingobj));
227 for (iter = ping_iterator_get (pingobj);
229 iter = ping_iterator_next (iter))
231 buf_len = sizeof (host);
232 if (ping_iterator_get_info (iter, PING_INFO_HOSTNAME,
235 WARNING ("ping plugin: ping_iterator_get_info "
236 "(PING_INFO_HOSTNAME) failed.");
240 buf_len = sizeof (latency);
241 if (ping_iterator_get_info (iter, PING_INFO_LATENCY,
244 WARNING ("ping plugin: ping_iterator_get_info (%s, "
245 "PING_INFO_LATENCY) failed.", host);
249 DEBUG ("ping plugin: host = %s, latency = %f", host, latency);
250 ping_submit (host, latency);
254 if ((number_of_hosts == 0) && (getuid != 0))
256 ERROR ("ping plugin: All hosts failed. Try starting collectd as root.");
259 return (number_of_hosts == 0 ? -1 : 0);
260 } /* int ping_read */
262 void module_register (modreg_e load)
264 if (load & MR_DATASETS)
265 plugin_register_data_set (&ds);
269 plugin_register_config ("ping", ping_config,
270 config_keys, config_keys_num);
271 plugin_register_init ("ping", ping_init);
272 plugin_register_read ("ping", ping_read);
274 } /* void module_register */