Code

src/daemon/utils_match.[ch]: Rename UTILS_MATCH_CF_GAUGE_LATENCY to UTILS_MATCH_CF_GA...
[collectd.git] / src / daemon / utils_tail_match.c
1 /*
2  * collectd - src/utils_tail_match.c
3  * Copyright (C) 2007-2008  C-Ware, Inc.
4  * Copyright (C) 2008       Florian Forster
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22  * DEALINGS IN THE SOFTWARE.
23  *
24  * Author:
25  *   Luke Heberling <lukeh at c-ware.com>
26  *   Florian Forster <octo at collectd.org>
27  *
28  * Description:
29  *   Encapsulates useful code to plugins which must parse a log file.
30  */
32 #include "collectd.h"
34 #include "common.h"
35 #include "plugin.h"
36 #include "utils_match.h"
37 #include "utils_tail.h"
38 #include "utils_tail_match.h"
39 #include "utils_latency_config.h"
41 struct cu_tail_match_simple_s
42 {
43   char plugin[DATA_MAX_NAME_LEN];
44   char plugin_instance[DATA_MAX_NAME_LEN];
45   char type[DATA_MAX_NAME_LEN];
46   char type_instance[DATA_MAX_NAME_LEN];
47   cdtime_t interval;
48   latency_config_t latency_config;
49 };
50 typedef struct cu_tail_match_simple_s cu_tail_match_simple_t;
52 struct cu_tail_match_match_s
53 {
54   cu_match_t *match;
55   void *user_data;
56   int (*submit) (cu_match_t *match, void *user_data);
57   void (*free) (void *user_data);
58 };
59 typedef struct cu_tail_match_match_s cu_tail_match_match_t;
61 struct cu_tail_match_s
62 {
63   int flags;
64   cu_tail_t *tail;
66   cdtime_t interval;
67   cu_tail_match_match_t *matches;
68   size_t matches_num;
69 };
71 /*
72  * Private functions
73  */
74 static int simple_submit_match (cu_match_t *match, void *user_data)
75 {
76   cu_tail_match_simple_t *data = (cu_tail_match_simple_t *) user_data;
77   cu_match_value_t *match_value;
78   value_list_t vl = VALUE_LIST_INIT;
79   value_t values[1];
81   match_value = (cu_match_value_t *) match_get_user_data (match);
82   if (match_value == NULL)
83     return (-1);
85   if ((match_value->ds_type & UTILS_MATCH_DS_TYPE_GAUGE)
86       && (match_value->values_num == 0))
87     values[0].gauge = NAN;
88   else
89     values[0] = match_value->value;
91   vl.values = values;
92   vl.values_len = 1;
93   sstrncpy (vl.plugin, data->plugin, sizeof (vl.plugin));
94   sstrncpy (vl.plugin_instance, data->plugin_instance,
95       sizeof (vl.plugin_instance));
96   sstrncpy (vl.type, data->type, sizeof (vl.type));
97   sstrncpy (vl.type_instance, data->type_instance,
98       sizeof (vl.type_instance));
100   vl.interval = data->interval;
101   plugin_dispatch_values (&vl);
103   match_value_reset (match_value);
104   return (0);
105 } /* int simple_submit_match */
107 static int latency_submit_match(cu_match_t *match, void *user_data) {
108   cu_tail_match_simple_t *data = (cu_tail_match_simple_t *)user_data;
109   cu_match_value_t *match_value;
110   value_list_t vl = VALUE_LIST_INIT;
112   match_value = (cu_match_value_t *)match_get_user_data(match);
113   if (match_value == NULL)
114     return (-1);
116   sstrncpy(vl.host, hostname_g, sizeof(vl.host));
117   sstrncpy(vl.plugin, data->plugin, sizeof(vl.plugin));
118   sstrncpy(vl.plugin_instance, data->plugin_instance,
119            sizeof(vl.plugin_instance));
120   vl.interval = data->interval;
121   vl.time = cdtime();
123   /* Submit percentiles */
124   sstrncpy(vl.type, data->type, sizeof(vl.type));
125   for (size_t i = 0; i < data->latency_config.percentile_num; i++) {
126     if (strlen(data->type_instance) != 0)
127       ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%s-%.0f",
128                 data->type_instance, data->latency_config.percentile[i]);
129     else
130       ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%.0f",
131                 data->latency_config.percentile[i]);
133     vl.values = &(value_t){
134         .gauge =
135             (match_value->values_num != 0)
136                 ? CDTIME_T_TO_DOUBLE(latency_counter_get_percentile(
137                       match_value->latency, data->latency_config.percentile[i]))
138                 : NAN,
139     };
140     vl.values_len = 1;
142     plugin_dispatch_values(&vl);
143   }
145   /* Submit buckets */
146   sstrncpy(vl.type, "bucket", sizeof(vl.type));
147   for (size_t i = 0; i < data->latency_config.buckets_num; i++) {
148     latency_bucket_t bucket = data->latency_config.buckets[i];
150     double lower_bound = CDTIME_T_TO_DOUBLE(bucket.lower_bound);
151     double upper_bound =
152         bucket.upper_bound ? CDTIME_T_TO_DOUBLE(bucket.upper_bound) : INFINITY;
154     if (strlen(data->type_instance) != 0)
155       ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%s-%s-%g_%g",
156                 data->type, data->type_instance, lower_bound, upper_bound);
157     else
158       ssnprintf(vl.type_instance, sizeof(vl.type_instance), "%s-%g_%g",
159                 data->type, lower_bound, upper_bound);
161     vl.values = &(value_t){
162         .gauge = latency_counter_get_rate(match_value->latency,
163                                           bucket.lower_bound,
164                                           bucket.upper_bound, vl.time),
165     };
166     vl.values_len = 1;
168     plugin_dispatch_values(&vl);
169   }
171   match_value->value.gauge = NAN;
172   match_value->values_num = 0;
173   latency_counter_reset(match_value->latency);
175   return (0);
176 } /* int latency_submit_match */
178 static int tail_callback (void *data, char *buf,
179     int __attribute__((unused)) buflen)
181   cu_tail_match_t *obj = (cu_tail_match_t *) data;
183   for (size_t i = 0; i < obj->matches_num; i++)
184     match_apply (obj->matches[i].match, buf);
186   return (0);
187 } /* int tail_callback */
189 static void tail_match_simple_free (void *data)
191   cu_tail_match_simple_t *user_data = (cu_tail_match_simple_t *) data;
192   latency_config_free(user_data->latency_config);
193   sfree (user_data);
194 } /* void tail_match_simple_free */
196 /*
197  * Public functions
198  */
199 cu_tail_match_t *tail_match_create (const char *filename)
201   cu_tail_match_t *obj;
203   obj = calloc (1, sizeof (*obj));
204   if (obj == NULL)
205     return (NULL);
207   obj->tail = cu_tail_create (filename);
208   if (obj->tail == NULL)
209   {
210     sfree (obj);
211     return (NULL);
212   }
214   return (obj);
215 } /* cu_tail_match_t *tail_match_create */
217 void tail_match_destroy (cu_tail_match_t *obj)
219   if (obj == NULL)
220     return;
222   if (obj->tail != NULL)
223   {
224     cu_tail_destroy (obj->tail);
225     obj->tail = NULL;
226   }
228   for (size_t i = 0; i < obj->matches_num; i++)
229   {
230     cu_tail_match_match_t *match = obj->matches + i;
231     if (match->match != NULL)
232     {
233       match_destroy (match->match);
234       match->match = NULL;
235     }
237     if ((match->user_data != NULL)
238         && (match->free != NULL))
239       (*match->free) (match->user_data);
240     match->user_data = NULL;
241   }
243   sfree (obj->matches);
244   sfree (obj);
245 } /* void tail_match_destroy */
247 int tail_match_add_match (cu_tail_match_t *obj, cu_match_t *match,
248     int (*submit_match) (cu_match_t *match, void *user_data),
249     void *user_data,
250     void (*free_user_data) (void *user_data))
252   cu_tail_match_match_t *temp;
254   temp = realloc (obj->matches,
255       sizeof (cu_tail_match_match_t) * (obj->matches_num + 1));
256   if (temp == NULL)
257     return (-1);
259   obj->matches = temp;
260   obj->matches_num++;
262   DEBUG ("tail_match_add_match interval %lf", CDTIME_T_TO_DOUBLE(((cu_tail_match_simple_t *)user_data)->interval));
263   temp = obj->matches + (obj->matches_num - 1);
265   temp->match = match;
266   temp->user_data = user_data;
267   temp->submit = submit_match;
268   temp->free = free_user_data;
270   return (0);
271 } /* int tail_match_add_match */
273 int tail_match_add_match_simple (cu_tail_match_t *obj,
274     const char *regex, const char *excluderegex, int ds_type,
275     const char *plugin, const char *plugin_instance,
276     const char *type, const char *type_instance,
277     const latency_config_t latency_cfg,
278     const cdtime_t interval)
280   cu_match_t *match;
281   cu_tail_match_simple_t *user_data;
282   int status;
284   match = match_create_simple (regex, excluderegex, ds_type);
285   if (match == NULL)
286     return (-1);
288   user_data = calloc (1, sizeof (*user_data));
289   if (user_data == NULL)
290   {
291     match_destroy (match);
292     return (-1);
293   }
295   sstrncpy (user_data->plugin, plugin, sizeof (user_data->plugin));
296   if (plugin_instance != NULL)
297     sstrncpy (user_data->plugin_instance, plugin_instance,
298         sizeof (user_data->plugin_instance));
300   sstrncpy (user_data->type, type, sizeof (user_data->type));
301   if (type_instance != NULL)
302     sstrncpy (user_data->type_instance, type_instance,
303         sizeof (user_data->type_instance));
305   user_data->interval = interval;
307   if ((ds_type & UTILS_MATCH_DS_TYPE_GAUGE)
308       && (ds_type & UTILS_MATCH_CF_GAUGE_DIST))
309   {
310     status = latency_config_copy(&user_data->latency_config, latency_cfg);
311     if (status != 0)
312     {
313       ERROR ("tail_match_add_match_simple: latency_config_copy() failed.");
314       status = -1;
315       goto out;
316     }
318     status = tail_match_add_match (obj, match, latency_submit_match,
319       user_data, tail_match_simple_free);
320   } else {
321     status = tail_match_add_match (obj, match, simple_submit_match,
322       user_data, free);
323   }
325 out:
326   if (status != 0)
327   {
328     tail_match_simple_free(user_data);
329     match_destroy (match);
330   }
332   return (status);
333 } /* int tail_match_add_match_simple */
335 int tail_match_read (cu_tail_match_t *obj)
337   char buffer[4096];
338   int status;
340   status = cu_tail_read (obj->tail, buffer, sizeof (buffer), tail_callback,
341       (void *) obj);
342   if (status != 0)
343   {
344     ERROR ("tail_match: cu_tail_read failed.");
345     return (status);
346   }
348   for (size_t i = 0; i < obj->matches_num; i++)
349   {
350     cu_tail_match_match_t *lt_match = obj->matches + i;
352     if (lt_match->submit == NULL)
353       continue;
355     (*lt_match->submit) (lt_match->match, lt_match->user_data);
356   }
358   return (0);
359 } /* int tail_match_read */
361 /* vim: set sw=2 sts=2 ts=8 : */