1 /**
2 * collectd - src/types_list.c
3 * Copyright (C) 2007 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; 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 octo Forster <octo at verplant.org>
20 **/
22 #include "collectd.h"
23 #include "common.h"
25 #include "plugin.h"
26 #include "configfile.h"
28 static int parse_ds (data_source_t *dsrc, char *buf, size_t buf_len)
29 {
30 char *dummy;
31 char *saveptr;
32 char *fields[8];
33 int fields_num;
35 if (buf_len < 11)
36 {
37 ERROR ("parse_ds: (buf_len = %zu) < 11", buf_len);
38 return (-1);
39 }
41 if (buf[buf_len - 1] == ',')
42 {
43 buf_len--;
44 buf[buf_len] = '\0';
45 }
47 dummy = buf;
48 saveptr = NULL;
50 fields_num = 0;
51 while (fields_num < 8)
52 {
53 if ((fields[fields_num] = strtok_r (dummy, ":", &saveptr)) == NULL)
54 break;
55 dummy = NULL;
56 fields_num++;
57 }
59 if (fields_num != 4)
60 {
61 ERROR ("parse_ds: (fields_num = %i) != 4", fields_num);
62 return (-1);
63 }
65 sstrncpy (dsrc->name, fields[0], sizeof (dsrc->name));
67 if (strcasecmp (fields[1], "GAUGE") == 0)
68 dsrc->type = DS_TYPE_GAUGE;
69 else if (strcasecmp (fields[1], "COUNTER") == 0)
70 dsrc->type = DS_TYPE_COUNTER;
71 else if (strcasecmp (fields[1], "DERIVE") == 0)
72 dsrc->type = DS_TYPE_DERIVE;
73 else if (strcasecmp (fields[1], "ABSOLUTE") == 0)
74 dsrc->type = DS_TYPE_ABSOLUTE;
75 else
76 {
77 ERROR ("(fields[1] = %s) != (GAUGE || COUNTER || DERIVE || ABSOLUTE)", fields[1]);
78 return (-1);
79 }
81 if (strcasecmp (fields[2], "U") == 0)
82 dsrc->min = NAN;
83 else
84 dsrc->min = atof (fields[2]);
86 if (strcasecmp (fields[3], "U") == 0)
87 dsrc->max = NAN;
88 else
89 dsrc->max = atof (fields[3]);
91 return (0);
92 } /* int parse_ds */
94 static void parse_line (char *buf)
95 {
96 char *fields[64];
97 size_t fields_num;
98 data_set_t *ds;
99 int i;
101 fields_num = strsplit (buf, fields, 64);
102 if (fields_num < 2)
103 return;
105 /* Ignore lines which begin with a hash sign. */
106 if (fields[0][0] == '#')
107 return;
109 ds = (data_set_t *) malloc (sizeof (data_set_t));
110 if (ds == NULL)
111 return;
113 memset (ds, '\0', sizeof (data_set_t));
115 sstrncpy (ds->type, fields[0], sizeof (ds->type));
117 ds->ds_num = fields_num - 1;
118 ds->ds = (data_source_t *) calloc (ds->ds_num, sizeof (data_source_t));
119 if (ds->ds == NULL)
120 return;
122 for (i = 0; i < ds->ds_num; i++)
123 if (parse_ds (ds->ds + i, fields[i + 1], strlen (fields[i + 1])) != 0)
124 {
125 sfree (ds->ds);
126 ERROR ("types_list: parse_line: Cannot parse data source #%i "
127 "of data set %s", i, ds->type);
128 return;
129 }
131 plugin_register_data_set (ds);
133 sfree (ds->ds);
134 sfree (ds);
135 } /* void parse_line */
137 static void parse_file (FILE *fh)
138 {
139 char buf[4096];
140 size_t buf_len;
142 while (fgets (buf, sizeof (buf), fh) != NULL)
143 {
144 buf_len = strlen (buf);
146 if (buf_len >= 4095)
147 {
148 NOTICE ("Skipping line with more than 4095 characters.");
149 do
150 {
151 if (fgets (buf, sizeof (buf), fh) == NULL)
152 break;
153 buf_len = strlen (buf);
154 } while (buf_len >= 4095);
155 continue;
156 } /* if (buf_len >= 4095) */
158 if ((buf_len == 0) || (buf[0] == '#'))
159 continue;
161 while ((buf_len > 0) && ((buf[buf_len - 1] == '\n')
162 || (buf[buf_len - 1] == '\n')))
163 buf[--buf_len] = '\0';
165 if (buf_len == 0)
166 continue;
168 parse_line (buf);
169 } /* while (fgets) */
170 } /* void parse_file */
172 int read_types_list (const char *file)
173 {
174 FILE *fh;
176 if (file == NULL)
177 return (-1);
179 fh = fopen (file, "r");
180 if (fh == NULL)
181 {
182 char errbuf[1024];
183 fprintf (stderr, "Failed to open types database `%s': %s.\n",
184 file, sstrerror (errno, errbuf, sizeof (errbuf)));
185 ERROR ("Failed to open types database `%s': %s",
186 file, sstrerror (errno, errbuf, sizeof (errbuf)));
187 return (-1);
188 }
190 parse_file (fh);
192 fclose (fh);
193 fh = NULL;
195 DEBUG ("Done parsing `%s'", file);
197 return (0);
198 } /* int read_types_list */
200 /*
201 * vim: shiftwidth=2:softtabstop=2:tabstop=8
202 */