2a9802ad3a0d4fc7f8e612a638f2cc63638f29fc
1 /**
2 * collectd - src/ping.c
3 * Copyright (C) 2005 Florian octo Forster
4 *
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; either version 2 of the License, or (at your
8 * option) any later version.
9 *
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.
14 *
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
18 *
19 * Authors:
20 * Florian octo Forster <octo at verplant.org>
21 **/
23 #include "collectd.h"
24 #include "common.h"
25 #include "plugin.h"
26 #include "configfile.h"
28 #define MODULE_NAME "ping"
30 #include <netinet/in.h>
31 #include "liboping/liboping.h"
33 static pingobj_t *pingobj = NULL;
35 static char *file_template = "ping-%s.rrd";
37 static char *ds_def[] =
38 {
39 "DS:ping:GAUGE:25:0:65535",
40 NULL
41 };
42 static int ds_num = 1;
44 static char *config_keys[] =
45 {
46 "Host",
47 NULL
48 };
49 static int config_keys_num = 1;
51 static void ping_init (void)
52 {
53 return;
54 }
56 static int ping_config (char *key, char *value)
57 {
58 if (strcasecmp (key, "host"))
59 {
60 return (-1);
61 }
63 if (pingobj == NULL)
64 {
65 if ((pingobj = ping_construct ()) == NULL)
66 {
67 syslog (LOG_ERR, "ping: `ping_construct' failed.\n");
68 return (-1);
69 }
70 }
72 if (ping_host_add (pingobj, value) < 0)
73 {
74 syslog (LOG_ERR, "ping: `ping_host_add' failed.\n");
75 return (-1);
76 }
78 return (0);
79 }
81 static void ping_write (char *host, char *inst, char *val)
82 {
83 char file[512];
84 int status;
86 status = snprintf (file, 512, file_template, inst);
87 if (status < 1)
88 return;
89 else if (status >= 512)
90 return;
92 rrd_update_file (host, file, val, ds_def, ds_num);
93 }
95 #define BUFSIZE 256
96 static void ping_submit (char *host, double latency)
97 {
98 char buf[BUFSIZE];
100 if (snprintf (buf, BUFSIZE, "%u:%f", (unsigned int) curtime, latency) >= BUFSIZE)
101 return;
103 plugin_submit (MODULE_NAME, host, buf);
104 }
105 #undef BUFSIZE
107 static void ping_read (void)
108 {
109 pingobj_iter_t *iter;
111 char *host;
112 double latency;
114 if (pingobj == NULL)
115 return;
117 if (ping_send (pingobj) < 0)
118 {
119 syslog (LOG_ERR, "ping: `ping_send' failed.");
120 return;
121 }
123 for (iter = ping_iterator_get (pingobj); iter != NULL; iter = ping_iterator_next (iter))
124 {
125 const char *tmp;
127 if ((tmp = ping_iterator_get_host (iter)) == NULL)
128 continue;
129 if ((host = strdup (tmp)) == NULL)
130 continue;
132 latency = ping_iterator_get_latency (iter);
134 ping_submit (host, latency);
136 free (host); host = NULL;
137 }
138 }
140 void module_register (void)
141 {
142 plugin_register (MODULE_NAME, ping_init, ping_read, ping_write);
143 cf_register (MODULE_NAME, ping_config, config_keys, config_keys_num);
144 }
146 #undef MODULE_NAME