1 /**
2 * collection4 - graph_config.c
3 * Copyright (C) 2010 Florian octo Forster
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA
19 *
20 * Authors:
21 * Florian octo Forster <ff at octo.it>
22 **/
24 #include <stdlib.h>
25 #include <unistd.h>
26 #include <string.h>
27 #include <strings.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #include <errno.h>
32 #include "graph_config.h"
33 #include "graph.h"
34 #include "graph_list.h"
35 #include "oconfig.h"
36 #include "common.h"
37 #include "data_provider.h"
39 #ifndef CONFIGFILE
40 # define CONFIGFILE "/etc/collection.conf"
41 #endif
43 #ifndef CACHEFILE
44 # define CACHEFILE "/tmp/collection4.json"
45 #endif
47 static time_t last_read_mtime = 0;
49 static char *cache_file = NULL;
51 static int dispatch_config (const oconfig_item_t *ci) /* {{{ */
52 {
53 int i;
55 for (i = 0; i < ci->children_num; i++)
56 {
57 oconfig_item_t *child;
59 child = ci->children + i;
60 if (strcasecmp ("Graph", child->key) == 0)
61 graph_config_add (child);
62 else if (strcasecmp ("DataProvider", child->key) == 0)
63 data_provider_config (child);
64 else if (strcasecmp ("CacheFile", child->key) == 0)
65 graph_config_get_string (child, &cache_file);
66 else
67 {
68 DEBUG ("Unknown config option: %s", child->key);
69 }
70 }
72 return (0);
73 } /* }}} int dispatch_config */
75 static int internal_read_config (void) /* {{{ */
76 {
77 oconfig_item_t *ci;
79 ci = oconfig_parse_file (CONFIGFILE);
80 if (ci == NULL)
81 return (-1);
83 dispatch_config (ci);
85 oconfig_free (ci);
87 gl_config_submit ();
89 return (0);
90 } /* }}} int internal_read_config */
92 static time_t get_config_mtime (void) /* {{{ */
93 {
94 struct stat statbuf;
95 int status;
97 memset (&statbuf, 0, sizeof (statbuf));
98 status = stat (CONFIGFILE, &statbuf);
99 if (status != 0)
100 return (0);
102 return (statbuf.st_mtime);
103 } /* }}} time_t get_config_mtime */
105 int graph_read_config (void) /* {{{ */
106 {
107 time_t mtime;
109 mtime = get_config_mtime ();
111 if (mtime <= last_read_mtime)
112 return (0);
114 internal_read_config ();
116 last_read_mtime = mtime;
118 return (0);
119 } /* }}} int graph_read_config */
121 int graph_config_get_string (const oconfig_item_t *ci, /* {{{ */
122 char **ret_str)
123 {
124 char *tmp;
126 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
127 return (EINVAL);
129 tmp = strdup (ci->values[0].value.string);
130 if (tmp == NULL)
131 return (ENOMEM);
133 free (*ret_str);
134 *ret_str = tmp;
136 return (0);
137 } /* }}} int graph_config_get_string */
139 int graph_config_get_bool (const oconfig_item_t *ci, /* {{{ */
140 _Bool *ret_bool)
141 {
142 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
143 return (EINVAL);
145 if (ci->values[0].value.boolean)
146 *ret_bool = 1;
147 else
148 *ret_bool = 0;
150 return (0);
151 } /* }}} int graph_config_get_bool */
153 const char *graph_config_get_cache_file (void) /* {{{ */
154 {
155 if (cache_file == NULL)
156 return (CACHEFILE);
157 return (cache_file);
158 } /* }}} char graph_config_get_cache_file */
160 /* vim: set sw=2 sts=2 et fdm=marker : */