1 /**
2 * collectd - src/match_timediff.c
3 * Copyright (C) 2008,2009 Florian 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; only version 2 of the License is applicable.
8 *
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.
13 *
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
17 *
18 * Authors:
19 * Florian Forster <octo at verplant.org>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "utils_cache.h"
25 #include "filter_chain.h"
27 #define SATISFY_ALL 0
28 #define SATISFY_ANY 1
30 /*
31 * private data types
32 */
33 struct mt_match_s;
34 typedef struct mt_match_s mt_match_t;
35 struct mt_match_s
36 {
37 cdtime_t future;
38 cdtime_t past;
39 };
41 /*
42 * internal helper functions
43 */
44 static int mt_create (const oconfig_item_t *ci, void **user_data) /* {{{ */
45 {
46 mt_match_t *m;
47 int status;
48 int i;
50 m = (mt_match_t *) malloc (sizeof (*m));
51 if (m == NULL)
52 {
53 ERROR ("mt_create: malloc failed.");
54 return (-ENOMEM);
55 }
56 memset (m, 0, sizeof (*m));
58 m->future = 0;
59 m->past = 0;
61 status = 0;
62 for (i = 0; i < ci->children_num; i++)
63 {
64 oconfig_item_t *child = ci->children + i;
66 if (strcasecmp ("Future", child->key) == 0)
67 status = cf_util_get_cdtime (child, &m->future);
68 else if (strcasecmp ("Past", child->key) == 0)
69 status = cf_util_get_cdtime (child, &m->past);
70 else
71 {
72 ERROR ("timediff match: The `%s' configuration option is not "
73 "understood and will be ignored.", child->key);
74 status = 0;
75 }
77 if (status != 0)
78 break;
79 }
81 /* Additional sanity-checking */
82 while (status == 0)
83 {
84 if ((m->future == 0) && (m->past == 0))
85 {
86 ERROR ("timediff match: Either `Future' or `Past' must be configured. "
87 "This match will be ignored.");
88 status = -1;
89 }
91 break;
92 }
94 if (status != 0)
95 {
96 free (m);
97 return (status);
98 }
100 *user_data = m;
101 return (0);
102 } /* }}} int mt_create */
104 static int mt_destroy (void **user_data) /* {{{ */
105 {
106 if (user_data != NULL)
107 {
108 sfree (*user_data);
109 }
111 return (0);
112 } /* }}} int mt_destroy */
114 static int mt_match (const data_set_t __attribute__((unused)) *ds, /* {{{ */
115 const value_list_t *vl,
116 notification_meta_t __attribute__((unused)) **meta, void **user_data)
117 {
118 mt_match_t *m;
119 cdtime_t now;
121 if ((user_data == NULL) || (*user_data == NULL))
122 return (-1);
124 m = *user_data;
125 now = cdtime ();
127 if (m->future != 0)
128 {
129 if (vl->time >= (now + m->future))
130 return (FC_MATCH_MATCHES);
131 }
133 if (m->past != 0)
134 {
135 if (vl->time <= (now - m->past))
136 return (FC_MATCH_MATCHES);
137 }
139 return (FC_MATCH_NO_MATCH);
140 } /* }}} int mt_match */
142 void module_register (void)
143 {
144 match_proc_t mproc;
146 memset (&mproc, 0, sizeof (mproc));
147 mproc.create = mt_create;
148 mproc.destroy = mt_destroy;
149 mproc.match = mt_match;
150 fc_register_match ("timediff", mproc);
151 } /* module_register */
153 /* vim: set sw=2 sts=2 tw=78 et fdm=marker : */