2 * collectd - src/tail.c
3 * Copyright (C) 2008 Florian octo Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
30 #include "utils_tail_match.h"
34 * <File "/var/log/exim4/mainlog">
38 * Regex "S=([1-9][0-9]*)"
39 * ExcludeRegex "U=root.*S="
48 struct ctail_config_match_s
57 typedef struct ctail_config_match_s ctail_config_match_t;
59 cu_tail_match_t **tail_match_list = NULL;
60 size_t tail_match_list_num = 0;
61 cdtime_t tail_match_list_intervals[255];
63 static int ctail_config_add_match_dstype (ctail_config_match_t *cm,
66 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
68 WARNING ("tail plugin: `DSType' needs exactly one string argument.");
72 if (strncasecmp ("Gauge", ci->values[0].value.string, strlen ("Gauge")) == 0)
74 cm->flags = UTILS_MATCH_DS_TYPE_GAUGE;
75 if (strcasecmp ("GaugeAverage", ci->values[0].value.string) == 0)
76 cm->flags |= UTILS_MATCH_CF_GAUGE_AVERAGE;
77 else if (strcasecmp ("GaugeMin", ci->values[0].value.string) == 0)
78 cm->flags |= UTILS_MATCH_CF_GAUGE_MIN;
79 else if (strcasecmp ("GaugeMax", ci->values[0].value.string) == 0)
80 cm->flags |= UTILS_MATCH_CF_GAUGE_MAX;
81 else if (strcasecmp ("GaugeLast", ci->values[0].value.string) == 0)
82 cm->flags |= UTILS_MATCH_CF_GAUGE_LAST;
86 else if (strncasecmp ("Counter", ci->values[0].value.string, strlen ("Counter")) == 0)
88 cm->flags = UTILS_MATCH_DS_TYPE_COUNTER;
89 if (strcasecmp ("CounterSet", ci->values[0].value.string) == 0)
90 cm->flags |= UTILS_MATCH_CF_COUNTER_SET;
91 else if (strcasecmp ("CounterAdd", ci->values[0].value.string) == 0)
92 cm->flags |= UTILS_MATCH_CF_COUNTER_ADD;
93 else if (strcasecmp ("CounterInc", ci->values[0].value.string) == 0)
94 cm->flags |= UTILS_MATCH_CF_COUNTER_INC;
98 else if (strncasecmp ("Derive", ci->values[0].value.string, strlen ("Derive")) == 0)
100 cm->flags = UTILS_MATCH_DS_TYPE_DERIVE;
101 if (strcasecmp ("DeriveSet", ci->values[0].value.string) == 0)
102 cm->flags |= UTILS_MATCH_CF_DERIVE_SET;
103 else if (strcasecmp ("DeriveAdd", ci->values[0].value.string) == 0)
104 cm->flags |= UTILS_MATCH_CF_DERIVE_ADD;
105 else if (strcasecmp ("DeriveInc", ci->values[0].value.string) == 0)
106 cm->flags |= UTILS_MATCH_CF_DERIVE_INC;
110 else if (strncasecmp ("Absolute", ci->values[0].value.string, strlen ("Absolute")) == 0)
112 cm->flags = UTILS_MATCH_DS_TYPE_ABSOLUTE;
113 if (strcasecmp ("AbsoluteSet", ci->values[0].value.string) == 0)
114 cm->flags |= UTILS_MATCH_CF_ABSOLUTE_SET;
125 WARNING ("tail plugin: `%s' is not a valid argument to `DSType'.",
126 ci->values[0].value.string);
131 } /* int ctail_config_add_match_dstype */
133 static int ctail_config_add_match (cu_tail_match_t *tm,
134 const char *plugin_instance, oconfig_item_t *ci, cdtime_t interval)
136 ctail_config_match_t cm;
140 memset (&cm, '\0', sizeof (cm));
142 if (ci->values_num != 0)
144 WARNING ("tail plugin: Ignoring arguments for the `Match' block.");
148 for (i = 0; i < ci->children_num; i++)
150 oconfig_item_t *option = ci->children + i;
152 if (strcasecmp ("Regex", option->key) == 0)
153 status = cf_util_get_string (option, &cm.regex);
154 else if (strcasecmp ("ExcludeRegex", option->key) == 0)
155 status = cf_util_get_string (option, &cm.excluderegex);
156 else if (strcasecmp ("DSType", option->key) == 0)
157 status = ctail_config_add_match_dstype (&cm, option);
158 else if (strcasecmp ("Type", option->key) == 0)
159 status = cf_util_get_string (option, &cm.type);
160 else if (strcasecmp ("Instance", option->key) == 0)
161 status = cf_util_get_string (option, &cm.type_instance);
164 WARNING ("tail plugin: Option `%s' not allowed here.", option->key);
170 } /* for (i = 0; i < ci->children_num; i++) */
174 if (cm.regex == NULL)
176 WARNING ("tail plugin: `Regex' missing in `Match' block.");
183 WARNING ("tail plugin: `Type' missing in `Match' block.");
190 WARNING ("tail plugin: `DSType' missing in `Match' block.");
196 } /* while (status == 0) */
200 status = tail_match_add_match_simple (tm, cm.regex, cm.excluderegex,
201 cm.flags, "tail", plugin_instance, cm.type, cm.type_instance, interval);
205 ERROR ("tail plugin: tail_match_add_match_simple failed.");
210 sfree (cm.excluderegex);
212 sfree (cm.type_instance);
215 } /* int ctail_config_add_match */
217 static int ctail_config_add_file (oconfig_item_t *ci)
220 cdtime_t interval = 0;
221 char *plugin_instance = NULL;
226 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
228 WARNING ("tail plugin: `File' needs exactly one string argument.");
232 tm = tail_match_create (ci->values[0].value.string);
235 ERROR ("tail plugin: tail_match_create (%s) failed.",
236 ci->values[0].value.string);
241 for (i = 0; i < ci->children_num; i++)
243 oconfig_item_t *option = ci->children + i;
245 if (strcasecmp ("Instance", option->key) == 0)
246 status = cf_util_get_string (option, &plugin_instance);
247 else if (strcasecmp ("Interval", option->key) == 0)
248 cf_util_get_cdtime (option, &interval);
249 else if (strcasecmp ("Match", option->key) == 0)
251 status = ctail_config_add_match (tm, plugin_instance, option, interval);
254 /* Be mild with failed matches.. */
264 } /* for (i = 0; i < ci->children_num; i++) */
266 if (num_matches == 0)
268 ERROR ("tail plugin: No (valid) matches found for file `%s'.",
269 ci->values[0].value.string);
270 tail_match_destroy (tm);
275 cu_tail_match_t **temp;
277 temp = (cu_tail_match_t **) realloc (tail_match_list,
278 sizeof (cu_tail_match_t *) * (tail_match_list_num + 1));
281 ERROR ("tail plugin: realloc failed.");
282 tail_match_destroy (tm);
286 tail_match_list = temp;
287 tail_match_list[tail_match_list_num] = tm;
288 tail_match_list_intervals[tail_match_list_num] = interval;
289 tail_match_list_num++;
293 } /* int ctail_config_add_file */
295 static int ctail_config (oconfig_item_t *ci)
299 for (i = 0; i < ci->children_num; i++)
301 oconfig_item_t *option = ci->children + i;
303 if (strcasecmp ("File", option->key) == 0)
304 ctail_config_add_file (option);
307 WARNING ("tail plugin: Option `%s' not allowed here.", option->key);
309 } /* for (i = 0; i < ci->children_num; i++) */
312 } /* int ctail_config */
314 static int ctail_read (user_data_t *ud)
318 status = tail_match_read ((cu_tail_match_t *)ud->data);
321 ERROR ("tail plugin: tail_match_read failed.");
326 } /* int ctail_read */
328 static int ctail_init (void)
330 struct timespec cb_interval;
335 if (tail_match_list_num == 0)
337 WARNING ("tail plugin: File list is empty. Returning an error.");
341 for (i = 0; i < tail_match_list_num; i++)
343 ud.data = (void *)tail_match_list[i];
344 ssnprintf(str, sizeof(str), "tail-%zu", i);
345 CDTIME_T_TO_TIMESPEC (tail_match_list_intervals[i], &cb_interval);
346 plugin_register_complex_read (NULL, str, ctail_read, &cb_interval, &ud);
350 } /* int ctail_init */
352 static int ctail_shutdown (void)
356 for (i = 0; i < tail_match_list_num; i++)
358 tail_match_destroy (tail_match_list[i]);
359 tail_match_list[i] = NULL;
361 sfree (tail_match_list);
362 tail_match_list_num = 0;
365 } /* int ctail_shutdown */
367 void module_register (void)
369 plugin_register_complex_config ("tail", ctail_config);
370 plugin_register_init ("tail", ctail_init);
371 plugin_register_shutdown ("tail", ctail_shutdown);
372 } /* void module_register */
374 /* vim: set sw=2 sts=2 ts=8 : */