2 * collectd - src/memcachec.c
3 * Copyright (C) 2009 Doug MacEachern
4 * Copyright (C) 2006-2009 Florian octo Forster
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Doug MacEachern <Doug.MacEachern at hyperic.com>
21 * Florian octo Forster <octo at verplant.org>
27 #include "configfile.h"
28 #include "utils_match.h"
30 #include <libmemcached/memcached.h>
36 typedef struct web_match_s web_match_t;
37 struct web_match_s /* {{{ */
51 typedef struct web_page_s web_page_t;
52 struct web_page_s /* {{{ */
70 static web_page_t *pages_g = NULL;
75 static void cmc_web_match_free (web_match_t *wm) /* {{{ */
83 match_destroy (wm->match);
84 cmc_web_match_free (wm->next);
86 } /* }}} void cmc_web_match_free */
88 static void cmc_web_page_free (web_page_t *wp) /* {{{ */
94 memcached_free(wp->memc);
102 cmc_web_match_free (wp->matches);
103 cmc_web_page_free (wp->next);
105 } /* }}} void cmc_web_page_free */
107 static int cmc_page_init_memc (web_page_t *wp) /* {{{ */
109 memcached_server_st *server;
111 wp->memc = memcached_create(NULL);
112 if (wp->memc == NULL)
114 ERROR ("memcachec plugin: memcached_create failed.");
118 server = memcached_servers_parse (wp->server);
119 memcached_server_push (wp->memc, server);
120 memcached_server_list_free (server);
123 } /* }}} int cmc_page_init_memc */
125 static int cmc_config_add_string (const char *name, char **dest, /* {{{ */
128 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
130 WARNING ("memcachec plugin: `%s' needs exactly one string argument.", name);
135 *dest = strdup (ci->values[0].value.string);
140 } /* }}} int cmc_config_add_string */
142 static int cmc_config_add_match_dstype (int *dstype_ret, /* {{{ */
147 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
149 WARNING ("memcachec plugin: `DSType' needs exactly one string argument.");
153 if (strncasecmp ("Gauge", ci->values[0].value.string,
154 strlen ("Gauge")) == 0)
156 dstype = UTILS_MATCH_DS_TYPE_GAUGE;
157 if (strcasecmp ("GaugeAverage", ci->values[0].value.string) == 0)
158 dstype |= UTILS_MATCH_CF_GAUGE_AVERAGE;
159 else if (strcasecmp ("GaugeMin", ci->values[0].value.string) == 0)
160 dstype |= UTILS_MATCH_CF_GAUGE_MIN;
161 else if (strcasecmp ("GaugeMax", ci->values[0].value.string) == 0)
162 dstype |= UTILS_MATCH_CF_GAUGE_MAX;
163 else if (strcasecmp ("GaugeLast", ci->values[0].value.string) == 0)
164 dstype |= UTILS_MATCH_CF_GAUGE_LAST;
168 else if (strncasecmp ("Counter", ci->values[0].value.string,
169 strlen ("Counter")) == 0)
171 dstype = UTILS_MATCH_DS_TYPE_COUNTER;
172 if (strcasecmp ("CounterSet", ci->values[0].value.string) == 0)
173 dstype |= UTILS_MATCH_CF_COUNTER_SET;
174 else if (strcasecmp ("CounterAdd", ci->values[0].value.string) == 0)
175 dstype |= UTILS_MATCH_CF_COUNTER_ADD;
176 else if (strcasecmp ("CounterInc", ci->values[0].value.string) == 0)
177 dstype |= UTILS_MATCH_CF_COUNTER_INC;
188 WARNING ("memcachec plugin: `%s' is not a valid argument to `DSType'.",
189 ci->values[0].value.string);
193 *dstype_ret = dstype;
195 } /* }}} int cmc_config_add_match_dstype */
197 static int cmc_config_add_match (web_page_t *page, /* {{{ */
204 if (ci->values_num != 0)
206 WARNING ("memcachec plugin: Ignoring arguments for the `Match' block.");
209 match = (web_match_t *) malloc (sizeof (*match));
212 ERROR ("memcachec plugin: malloc failed.");
215 memset (match, 0, sizeof (*match));
218 for (i = 0; i < ci->children_num; i++)
220 oconfig_item_t *child = ci->children + i;
222 if (strcasecmp ("Regex", child->key) == 0)
223 status = cmc_config_add_string ("Regex", &match->regex, child);
224 else if (strcasecmp ("ExcludeRegex", child->key) == 0)
225 status = cmc_config_add_string ("ExcludeRegex", &match->exclude_regex, child);
226 else if (strcasecmp ("DSType", child->key) == 0)
227 status = cmc_config_add_match_dstype (&match->dstype, child);
228 else if (strcasecmp ("Type", child->key) == 0)
229 status = cmc_config_add_string ("Type", &match->type, child);
230 else if (strcasecmp ("Instance", child->key) == 0)
231 status = cmc_config_add_string ("Instance", &match->instance, child);
234 WARNING ("memcachec plugin: Option `%s' not allowed here.", child->key);
240 } /* for (i = 0; i < ci->children_num; i++) */
244 if (match->regex == NULL)
246 WARNING ("memcachec plugin: `Regex' missing in `Match' block.");
250 if (match->type == NULL)
252 WARNING ("memcachec plugin: `Type' missing in `Match' block.");
256 if (match->dstype == 0)
258 WARNING ("memcachec plugin: `DSType' missing in `Match' block.");
263 } /* while (status == 0) */
268 match->match = match_create_simple (match->regex, match->exclude_regex,
270 if (match->match == NULL)
272 ERROR ("memcachec plugin: tail_match_add_match_simple failed.");
273 cmc_web_match_free (match);
280 prev = page->matches;
281 while ((prev != NULL) && (prev->next != NULL))
285 page->matches = match;
291 } /* }}} int cmc_config_add_match */
293 static int cmc_config_add_page (oconfig_item_t *ci) /* {{{ */
299 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
301 WARNING ("memcachec plugin: `Page' blocks need exactly one string argument.");
305 page = (web_page_t *) malloc (sizeof (*page));
308 ERROR ("memcachec plugin: malloc failed.");
311 memset (page, 0, sizeof (*page));
315 page->instance = strdup (ci->values[0].value.string);
316 if (page->instance == NULL)
318 ERROR ("memcachec plugin: strdup failed.");
323 /* Process all children */
325 for (i = 0; i < ci->children_num; i++)
327 oconfig_item_t *child = ci->children + i;
329 if (strcasecmp ("Server", child->key) == 0)
330 status = cmc_config_add_string ("Server", &page->server, child);
331 else if (strcasecmp ("Key", child->key) == 0)
332 status = cmc_config_add_string ("Key", &page->key, child);
333 else if (strcasecmp ("Match", child->key) == 0)
334 /* Be liberal with failing matches => don't set `status'. */
335 cmc_config_add_match (page, child);
338 WARNING ("memcachec plugin: Option `%s' not allowed here.", child->key);
344 } /* for (i = 0; i < ci->children_num; i++) */
346 /* Additionial sanity checks and libmemcached initialization. */
349 if (page->server == NULL)
351 WARNING ("memcachec plugin: `Server' missing in `Page' block.");
355 if (page->key == NULL)
357 WARNING ("memcachec plugin: `Key' missing in `Page' block.");
361 if (page->matches == NULL)
363 assert (page->instance != NULL);
364 WARNING ("memcachec plugin: No (valid) `Match' block "
365 "within `Page' block `%s'.", page->instance);
370 status = cmc_page_init_memc (page);
373 } /* while (status == 0) */
377 cmc_web_page_free (page);
381 /* Add the new page to the linked list */
389 while ((prev != NULL) && (prev->next != NULL))
395 } /* }}} int cmc_config_add_page */
397 static int cmc_config (oconfig_item_t *ci) /* {{{ */
407 for (i = 0; i < ci->children_num; i++)
409 oconfig_item_t *child = ci->children + i;
411 if (strcasecmp ("Page", child->key) == 0)
413 status = cmc_config_add_page (child);
421 WARNING ("memcachec plugin: Option `%s' not allowed here.", child->key);
426 if ((success == 0) && (errors > 0))
428 ERROR ("memcachec plugin: All statements failed.");
433 } /* }}} int cmc_config */
435 static int cmc_init (void) /* {{{ */
439 INFO ("memcachec plugin: No pages have been defined.");
443 } /* }}} int cmc_init */
445 static void cmc_submit (const web_page_t *wp, const web_match_t *wm, /* {{{ */
446 const cu_match_value_t *mv)
449 value_list_t vl = VALUE_LIST_INIT;
451 values[0] = mv->value;
455 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
456 sstrncpy (vl.plugin, "memcachec", sizeof (vl.plugin));
457 sstrncpy (vl.plugin_instance, wp->instance, sizeof (vl.plugin_instance));
458 sstrncpy (vl.type, wm->type, sizeof (vl.type));
459 sstrncpy (vl.type_instance, wm->instance, sizeof (vl.type_instance));
461 plugin_dispatch_values (&vl);
462 } /* }}} void cmc_submit */
464 static int cmc_read_page (web_page_t *wp) /* {{{ */
468 size_t string_length;
472 if (wp->memc == NULL)
475 wp->buffer = memcached_get (wp->memc, wp->key, strlen (wp->key),
476 &string_length, &flags, &rc);
477 if (rc != MEMCACHED_SUCCESS)
479 ERROR ("memcachec plugin: memcached_get failed: %s",
480 memcached_strerror (wp->memc, rc));
484 for (wm = wp->matches; wm != NULL; wm = wm->next)
486 cu_match_value_t *mv;
488 status = match_apply (wm->match, wp->buffer);
491 WARNING ("memcachec plugin: match_apply failed.");
495 mv = match_get_user_data (wm->match);
498 WARNING ("memcachec plugin: match_get_user_data returned NULL.");
502 cmc_submit (wp, wm, mv);
503 match_value_reset (mv);
504 } /* for (wm = wp->matches; wm != NULL; wm = wm->next) */
509 } /* }}} int cmc_read_page */
511 static int cmc_read (void) /* {{{ */
515 for (wp = pages_g; wp != NULL; wp = wp->next)
519 } /* }}} int cmc_read */
521 static int cmc_shutdown (void) /* {{{ */
523 cmc_web_page_free (pages_g);
527 } /* }}} int cmc_shutdown */
529 void module_register (void)
531 plugin_register_complex_config ("memcachec", cmc_config);
532 plugin_register_init ("memcachec", cmc_init);
533 plugin_register_read ("memcachec", cmc_read);
534 plugin_register_shutdown ("memcachec", cmc_shutdown);
535 } /* void module_register */
537 /* vim: set sw=2 sts=2 et fdm=marker : */