3 * Copyright (C) 2007-2009 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 "utils_cache.h"
26 #include "utils_parse_option.h"
31 static const char *config_keys[] =
36 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
38 static char *datadir = NULL;
39 static int store_rates = 0;
40 static int use_stdio = 0;
42 static int value_list_to_string (char *buffer, int buffer_len,
43 const data_set_t *ds, const value_list_t *vl)
48 gauge_t *rates = NULL;
50 assert (0 == strcmp (ds->type, vl->type));
52 memset (buffer, '\0', buffer_len);
54 status = ssnprintf (buffer, buffer_len, "%u", (unsigned int) vl->time);
55 if ((status < 1) || (status >= buffer_len))
59 for (i = 0; i < ds->ds_num; i++)
61 if ((ds->ds[i].type != DS_TYPE_COUNTER)
62 && (ds->ds[i].type != DS_TYPE_GAUGE))
65 if (ds->ds[i].type == DS_TYPE_COUNTER)
69 status = ssnprintf (buffer + offset,
72 vl->values[i].counter);
74 else /* if (store_rates == 1) */
77 rates = uc_get_rate (ds, vl);
80 WARNING ("csv plugin: "
81 "uc_get_rate failed.");
84 status = ssnprintf (buffer + offset,
89 else /* if (ds->ds[i].type == DS_TYPE_GAUGE) */
91 status = ssnprintf (buffer + offset, buffer_len - offset,
92 ",%lf", vl->values[i].gauge);
95 if ((status < 1) || (status >= (buffer_len - offset)))
102 } /* for ds->ds_num */
106 } /* int value_list_to_string */
108 static int value_list_to_filename (char *buffer, int buffer_len,
109 const data_set_t *ds, const value_list_t *vl)
114 assert (0 == strcmp (ds->type, vl->type));
118 status = ssnprintf (buffer + offset, buffer_len - offset,
120 if ((status < 1) || (status >= buffer_len - offset))
125 status = ssnprintf (buffer + offset, buffer_len - offset,
127 if ((status < 1) || (status >= buffer_len - offset))
131 if (strlen (vl->plugin_instance) > 0)
132 status = ssnprintf (buffer + offset, buffer_len - offset,
133 "%s-%s/", vl->plugin, vl->plugin_instance);
135 status = ssnprintf (buffer + offset, buffer_len - offset,
137 if ((status < 1) || (status >= buffer_len - offset))
141 if (strlen (vl->type_instance) > 0)
142 status = ssnprintf (buffer + offset, buffer_len - offset,
143 "%s-%s", vl->type, vl->type_instance);
145 status = ssnprintf (buffer + offset, buffer_len - offset,
147 if ((status < 1) || (status >= buffer_len - offset))
156 /* TODO: Find a way to minimize the calls to `localtime_r',
157 * since they are pretty expensive.. */
159 if (localtime_r (&now, &stm) == NULL)
161 ERROR ("csv plugin: localtime_r failed");
165 strftime (buffer + offset, buffer_len - offset,
170 } /* int value_list_to_filename */
172 static int csv_create_file (const char *filename, const data_set_t *ds)
177 if (check_create_dir (filename))
180 csv = fopen (filename, "w");
184 ERROR ("csv plugin: fopen (%s) failed: %s",
186 sstrerror (errno, errbuf, sizeof (errbuf)));
190 fprintf (csv, "epoch");
191 for (i = 0; i < ds->ds_num; i++)
192 fprintf (csv, ",%s", ds->ds[i].name);
198 } /* int csv_create_file */
200 static int csv_config (const char *key, const char *value)
202 if (strcasecmp ("DataDir", key) == 0)
206 if (strcasecmp ("stdout", value) == 0)
211 else if (strcasecmp ("stderr", value) == 0)
216 datadir = strdup (value);
219 int len = strlen (datadir);
220 while ((len > 0) && (datadir[len - 1] == '/'))
232 else if (strcasecmp ("StoreRates", key) == 0)
234 if ((strcasecmp ("True", value) == 0)
235 || (strcasecmp ("Yes", value) == 0)
236 || (strcasecmp ("On", value) == 0))
250 } /* int csv_config */
252 static int csv_write (const data_set_t *ds, const value_list_t *vl,
253 user_data_t __attribute__((unused)) *user_data)
263 if (0 != strcmp (ds->type, vl->type)) {
264 ERROR ("csv plugin: DS type does not match value list type");
268 if (value_list_to_filename (filename, sizeof (filename), ds, vl) != 0)
271 DEBUG ("csv plugin: csv_write: filename = %s;", filename);
273 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
280 escape_string (filename, sizeof (filename));
282 /* Replace commas by colons for PUTVAL compatible output. */
283 for (i = 0; i < sizeof (values); i++)
287 else if (values[i] == ',')
291 fprintf (use_stdio == 1 ? stdout : stderr,
292 "PUTVAL %s interval=%i %s\n",
293 filename, interval_g, values);
297 if (stat (filename, &statbuf) == -1)
301 if (csv_create_file (filename, ds))
307 ERROR ("stat(%s) failed: %s", filename,
308 sstrerror (errno, errbuf,
313 else if (!S_ISREG (statbuf.st_mode))
315 ERROR ("stat(%s): Not a regular file!",
320 csv = fopen (filename, "a");
324 ERROR ("csv plugin: fopen (%s) failed: %s", filename,
325 sstrerror (errno, errbuf, sizeof (errbuf)));
328 csv_fd = fileno (csv);
330 memset (&fl, '\0', sizeof (fl));
332 fl.l_len = 0; /* till end of file */
333 fl.l_pid = getpid ();
335 fl.l_whence = SEEK_SET;
337 status = fcntl (csv_fd, F_SETLK, &fl);
341 ERROR ("csv plugin: flock (%s) failed: %s", filename,
342 sstrerror (errno, errbuf, sizeof (errbuf)));
347 fprintf (csv, "%s\n", values);
349 /* The lock is implicitely released. I we don't release it explicitely
350 * because the `FILE *' may need to flush a cache first */
354 } /* int csv_write */
356 void module_register (void)
358 plugin_register_config ("csv", csv_config,
359 config_keys, config_keys_num);
360 plugin_register_write ("csv", csv_write, /* user_data = */ NULL);
361 } /* void module_register */