2 * collectd - src/curl_json.c
3 * Copyright (C) 2009 Doug MacEachern
4 * Copyright (C) 2006-2013 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 <dougm at hyperic.com>
21 * Florian octo Forster <octo at collectd.org>
28 #include "utils_avltree.h"
29 #include "utils_complain.h"
30 #include "utils_curl_stats.h"
32 #include <sys/types.h>
35 #include <curl/curl.h>
37 #include <yajl/yajl_parse.h>
38 #if HAVE_YAJL_YAJL_VERSION_H
39 #include <yajl/yajl_version.h>
42 #if defined(YAJL_MAJOR) && (YAJL_MAJOR > 1)
43 #define HAVE_YAJL_V2 1
46 #define CJ_DEFAULT_HOST "localhost"
48 #define COUCH_MIN(x, y) ((x) < (y) ? (x) : (y))
51 typedef struct cj_key_s cj_key_t;
52 struct cj_key_s /* {{{ */
60 /* cj_tree_entry_t is a union of either a metric configuration ("key") or a tree
61 * mapping array indexes / map keys to a descendant cj_tree_entry_t*. */
63 enum { KEY, TREE } type;
70 /* cj_state_t is a stack providing the configuration relevant for the context
71 * that is currently being parsed. If entry->type == KEY, the parser should
72 * expect a metric (a numeric value). If entry->type == TREE, the parser should
73 * expect an array of map to descent into. If entry == NULL, no configuration
74 * exists for this part of the JSON structure. */
76 cj_tree_entry_t *entry;
79 char name[DATA_MAX_NAME_LEN];
98 struct curl_slist *headers;
105 char curl_errbuf[CURL_ERROR_SIZE];
110 cj_state_t state[YAJL_MAX_DEPTH];
112 typedef struct cj_s cj_t; /* }}} */
115 typedef size_t yajl_len_t;
117 typedef unsigned int yajl_len_t;
120 static int cj_read(user_data_t *ud);
121 static void cj_submit_impl(cj_t *db, cj_key_t *key, value_t *value);
123 /* cj_submit is a function pointer to cj_submit_impl, allowing the unit-test to
124 * overwrite which function is called. */
125 static void (*cj_submit)(cj_t *, cj_key_t *, value_t *) = cj_submit_impl;
127 static size_t cj_curl_callback(void *buf, /* {{{ */
128 size_t size, size_t nmemb, void *user_data) {
142 status = yajl_parse(db->yajl, (unsigned char *)buf, len);
143 if (status == yajl_status_ok)
146 else if (status == yajl_status_insufficient_data)
151 yajl_get_error(db->yajl, /* verbose = */ 1,
152 /* jsonText = */ (unsigned char *)buf, (unsigned int)len);
153 ERROR("curl_json plugin: yajl_parse failed: %s", msg);
154 yajl_free_error(db->yajl, msg);
155 return 0; /* abort write callback */
156 } /* }}} size_t cj_curl_callback */
158 static int cj_get_type(cj_key_t *key) {
162 const data_set_t *ds = plugin_get_ds(key->type);
164 static char type[DATA_MAX_NAME_LEN] = "!!!invalid!!!";
166 assert(key->type != NULL);
167 if (strcmp(type, key->type) != 0) {
168 ERROR("curl_json plugin: Unable to look up DS type \"%s\".", key->type);
169 sstrncpy(type, key->type, sizeof(type));
173 } else if (ds->ds_num > 1) {
174 static c_complain_t complaint = C_COMPLAIN_INIT_STATIC;
177 LOG_WARNING, &complaint,
178 "curl_json plugin: The type \"%s\" has more than one data source. "
179 "This is currently not supported. I will return the type of the "
180 "first data source, but this will likely lead to problems later on.",
184 return ds->ds[0].type;
187 /* cj_load_key loads the configuration for "key" from the parent context and
188 * sets either .key or .tree in the current context. */
189 static int cj_load_key(cj_t *db, char const *key) {
190 if (db == NULL || key == NULL || db->depth <= 0)
193 sstrncpy(db->state[db->depth].name, key, sizeof(db->state[db->depth].name));
195 if (db->state[db->depth - 1].entry == NULL ||
196 db->state[db->depth - 1].entry->type != TREE) {
200 c_avl_tree_t *tree = db->state[db->depth - 1].entry->tree;
201 cj_tree_entry_t *e = NULL;
203 if (c_avl_get(tree, key, (void *)&e) == 0) {
204 db->state[db->depth].entry = e;
205 } else if (c_avl_get(tree, CJ_ANY, (void *)&e) == 0) {
206 db->state[db->depth].entry = e;
208 db->state[db->depth].entry = NULL;
214 static void cj_advance_array(cj_t *db) {
215 if (!db->state[db->depth].in_array)
218 db->state[db->depth].index++;
220 char name[DATA_MAX_NAME_LEN];
221 snprintf(name, sizeof(name), "%d", db->state[db->depth].index);
222 cj_load_key(db, name);
226 #define CJ_CB_ABORT 0
227 #define CJ_CB_CONTINUE 1
229 static int cj_cb_null(void *ctx) {
230 cj_advance_array(ctx);
231 return CJ_CB_CONTINUE;
234 static int cj_cb_number(void *ctx, const char *number, yajl_len_t number_len) {
235 cj_t *db = (cj_t *)ctx;
237 /* Create a null-terminated version of the string. */
238 char buffer[number_len + 1];
239 memcpy(buffer, number, number_len);
240 buffer[sizeof(buffer) - 1] = 0;
242 if (db->state[db->depth].entry == NULL ||
243 db->state[db->depth].entry->type != KEY) {
244 if (db->state[db->depth].entry != NULL) {
245 NOTICE("curl_json plugin: Found \"%s\", but the configuration expects a "
249 cj_advance_array(ctx);
250 return CJ_CB_CONTINUE;
253 cj_key_t *key = db->state[db->depth].entry->key;
255 int type = cj_get_type(key);
257 int status = parse_value(buffer, &vt, type);
259 cj_advance_array(ctx);
260 return CJ_CB_CONTINUE;
263 cj_submit(db, key, &vt);
264 cj_advance_array(ctx);
265 return CJ_CB_CONTINUE;
266 } /* int cj_cb_number */
268 /* Queries the key-tree of the parent context for "in_name" and, if found,
269 * updates the "key" field of the current context. Otherwise, "key" is set to
271 static int cj_cb_map_key(void *ctx, unsigned char const *in_name,
272 yajl_len_t in_name_len) {
273 char name[in_name_len + 1];
275 memmove(name, in_name, in_name_len);
276 name[sizeof(name) - 1] = 0;
278 if (cj_load_key(ctx, name) != 0)
281 return CJ_CB_CONTINUE;
284 static int cj_cb_string(void *ctx, const unsigned char *val, yajl_len_t len) {
285 /* Handle the string as if it was a number. */
286 return cj_cb_number(ctx, (const char *)val, len);
287 } /* int cj_cb_string */
289 static int cj_cb_boolean(void *ctx, int boolVal) {
291 return cj_cb_number(ctx, "1", 1);
293 return cj_cb_number(ctx, "0", 1);
294 } /* int cj_cb_boolean */
296 static int cj_cb_end(void *ctx) {
297 cj_t *db = (cj_t *)ctx;
298 memset(&db->state[db->depth], 0, sizeof(db->state[db->depth]));
300 cj_advance_array(ctx);
301 return CJ_CB_CONTINUE;
304 static int cj_cb_start_map(void *ctx) {
305 cj_t *db = (cj_t *)ctx;
307 if ((db->depth + 1) >= YAJL_MAX_DEPTH) {
308 ERROR("curl_json plugin: %s depth exceeds max, aborting.",
309 db->url ? db->url : db->sock);
313 return CJ_CB_CONTINUE;
316 static int cj_cb_end_map(void *ctx) { return cj_cb_end(ctx); }
318 static int cj_cb_start_array(void *ctx) {
319 cj_t *db = (cj_t *)ctx;
321 if ((db->depth + 1) >= YAJL_MAX_DEPTH) {
322 ERROR("curl_json plugin: %s depth exceeds max, aborting.",
323 db->url ? db->url : db->sock);
327 db->state[db->depth].in_array = true;
328 db->state[db->depth].index = 0;
330 cj_load_key(db, "0");
332 return CJ_CB_CONTINUE;
335 static int cj_cb_end_array(void *ctx) {
336 cj_t *db = (cj_t *)ctx;
337 db->state[db->depth].in_array = false;
338 return cj_cb_end(ctx);
341 static yajl_callbacks ycallbacks = {
342 cj_cb_null, /* null */
343 cj_cb_boolean, /* boolean */
346 cj_cb_number, cj_cb_string, cj_cb_start_map, cj_cb_map_key,
347 cj_cb_end_map, cj_cb_start_array, cj_cb_end_array};
349 /* end yajl callbacks */
351 static void cj_key_free(cj_key_t *key) /* {{{ */
358 sfree(key->instance);
361 } /* }}} void cj_key_free */
363 static void cj_tree_free(c_avl_tree_t *tree) /* {{{ */
368 while (c_avl_pick(tree, (void *)&name, (void *)&e) == 0) {
374 cj_tree_free(e->tree);
379 } /* }}} void cj_tree_free */
381 static void cj_free(void *arg) /* {{{ */
385 DEBUG("curl_json plugin: cj_free (arg = %p);", arg);
392 if (db->curl != NULL)
393 curl_easy_cleanup(db->curl);
396 if (db->tree != NULL)
397 cj_tree_free(db->tree);
401 sfree(db->plugin_name);
409 sfree(db->credentials);
411 sfree(db->post_body);
412 curl_slist_free_all(db->headers);
413 curl_stats_destroy(db->stats);
416 } /* }}} void cj_free */
418 /* Configuration handling functions {{{ */
420 static c_avl_tree_t *cj_avl_create(void) {
421 return c_avl_create((int (*)(const void *, const void *))strcmp);
424 static int cj_config_append_string(const char *name,
425 struct curl_slist **dest, /* {{{ */
426 oconfig_item_t *ci) {
427 struct curl_slist *temp = NULL;
428 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
429 WARNING("curl_json plugin: `%s' needs exactly one string argument.", name);
433 temp = curl_slist_append(*dest, ci->values[0].value.string);
440 } /* }}} int cj_config_append_string */
442 /* cj_append_key adds key to the configuration stored in db.
445 * "httpd/requests/count",
446 * "httpd/requests/current" ->
447 * { "httpd": { "requests": { "count": $key, "current": $key } } }
449 static int cj_append_key(cj_t *db, cj_key_t *key) { /* {{{ */
450 if (db->tree == NULL)
451 db->tree = cj_avl_create();
453 c_avl_tree_t *tree = db->tree;
455 char const *start = key->path;
460 while ((end = strchr(start, '/')) != NULL) {
463 size_t len = end - start;
467 len = COUCH_MIN(len, sizeof(name) - 1);
468 sstrncpy(name, start, len + 1);
471 if (c_avl_get(tree, name, (void *)&e) != 0) {
472 e = calloc(1, sizeof(*e));
476 e->tree = cj_avl_create();
478 c_avl_insert(tree, strdup(name), e);
488 if (strlen(start) == 0) {
489 ERROR("curl_json plugin: invalid key: %s", key->path);
493 cj_tree_entry_t *e = calloc(1, sizeof(*e));
499 c_avl_insert(tree, strdup(start), e);
501 } /* }}} int cj_append_key */
503 static int cj_config_add_key(cj_t *db, /* {{{ */
504 oconfig_item_t *ci) {
508 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
509 WARNING("curl_json plugin: The `Key' block "
510 "needs exactly one string argument.");
514 key = calloc(1, sizeof(*key));
516 ERROR("curl_json plugin: calloc failed.");
520 if (strcasecmp("Key", ci->key) == 0) {
521 status = cf_util_get_string(ci, &key->path);
527 ERROR("curl_json plugin: cj_config: "
535 for (int i = 0; i < ci->children_num; i++) {
536 oconfig_item_t *child = ci->children + i;
538 if (strcasecmp("Type", child->key) == 0)
539 status = cf_util_get_string(child, &key->type);
540 else if (strcasecmp("Instance", child->key) == 0)
541 status = cf_util_get_string(child, &key->instance);
543 WARNING("curl_json plugin: Option `%s' not allowed here.", child->key);
549 } /* for (i = 0; i < ci->children_num; i++) */
556 if (key->type == NULL) {
557 WARNING("curl_json plugin: `Type' missing in `Key' block.");
562 status = cj_append_key(db, key);
569 } /* }}} int cj_config_add_key */
571 static int cj_init_curl(cj_t *db) /* {{{ */
573 db->curl = curl_easy_init();
574 if (db->curl == NULL) {
575 ERROR("curl_json plugin: curl_easy_init failed.");
579 curl_easy_setopt(db->curl, CURLOPT_NOSIGNAL, 1L);
580 curl_easy_setopt(db->curl, CURLOPT_WRITEFUNCTION, cj_curl_callback);
581 curl_easy_setopt(db->curl, CURLOPT_WRITEDATA, db);
582 curl_easy_setopt(db->curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
583 curl_easy_setopt(db->curl, CURLOPT_ERRORBUFFER, db->curl_errbuf);
584 curl_easy_setopt(db->curl, CURLOPT_FOLLOWLOCATION, 1L);
585 curl_easy_setopt(db->curl, CURLOPT_MAXREDIRS, 50L);
587 if (db->user != NULL) {
588 #ifdef HAVE_CURLOPT_USERNAME
589 curl_easy_setopt(db->curl, CURLOPT_USERNAME, db->user);
590 curl_easy_setopt(db->curl, CURLOPT_PASSWORD,
591 (db->pass == NULL) ? "" : db->pass);
593 size_t credentials_size;
595 credentials_size = strlen(db->user) + 2;
596 if (db->pass != NULL)
597 credentials_size += strlen(db->pass);
599 db->credentials = malloc(credentials_size);
600 if (db->credentials == NULL) {
601 ERROR("curl_json plugin: malloc failed.");
605 snprintf(db->credentials, credentials_size, "%s:%s", db->user,
606 (db->pass == NULL) ? "" : db->pass);
607 curl_easy_setopt(db->curl, CURLOPT_USERPWD, db->credentials);
611 curl_easy_setopt(db->curl, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
614 curl_easy_setopt(db->curl, CURLOPT_SSL_VERIFYPEER, (long)db->verify_peer);
615 curl_easy_setopt(db->curl, CURLOPT_SSL_VERIFYHOST, db->verify_host ? 2L : 0L);
616 if (db->cacert != NULL)
617 curl_easy_setopt(db->curl, CURLOPT_CAINFO, db->cacert);
618 if (db->headers != NULL)
619 curl_easy_setopt(db->curl, CURLOPT_HTTPHEADER, db->headers);
620 if (db->post_body != NULL)
621 curl_easy_setopt(db->curl, CURLOPT_POSTFIELDS, db->post_body);
623 #ifdef HAVE_CURLOPT_TIMEOUT_MS
624 if (db->timeout >= 0)
625 curl_easy_setopt(db->curl, CURLOPT_TIMEOUT_MS, (long)db->timeout);
626 else if (db->interval > 0)
627 curl_easy_setopt(db->curl, CURLOPT_TIMEOUT_MS,
628 (long)CDTIME_T_TO_MS(db->interval));
630 curl_easy_setopt(db->curl, CURLOPT_TIMEOUT_MS,
631 (long)CDTIME_T_TO_MS(plugin_get_interval()));
635 } /* }}} int cj_init_curl */
637 static int cj_config_add_url(oconfig_item_t *ci) /* {{{ */
642 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
643 WARNING("curl_json plugin: The `URL' block "
644 "needs exactly one string argument.");
648 db = calloc(1, sizeof(*db));
650 ERROR("curl_json plugin: calloc failed.");
656 if (strcasecmp("URL", ci->key) == 0)
657 status = cf_util_get_string(ci, &db->url);
658 else if (strcasecmp("Sock", ci->key) == 0)
659 status = cf_util_get_string(ci, &db->sock);
661 ERROR("curl_json plugin: cj_config: "
672 /* Fill the `cj_t' structure.. */
673 for (int i = 0; i < ci->children_num; i++) {
674 oconfig_item_t *child = ci->children + i;
676 if (strcasecmp("Instance", child->key) == 0)
677 status = cf_util_get_string(child, &db->instance);
678 else if (strcasecmp("Plugin", child->key) == 0)
679 status = cf_util_get_string(child, &db->plugin_name);
680 else if (strcasecmp("Host", child->key) == 0)
681 status = cf_util_get_string(child, &db->host);
682 else if (db->url && strcasecmp("User", child->key) == 0)
683 status = cf_util_get_string(child, &db->user);
684 else if (db->url && strcasecmp("Password", child->key) == 0)
685 status = cf_util_get_string(child, &db->pass);
686 else if (strcasecmp("Digest", child->key) == 0)
687 status = cf_util_get_boolean(child, &db->digest);
688 else if (db->url && strcasecmp("VerifyPeer", child->key) == 0)
689 status = cf_util_get_boolean(child, &db->verify_peer);
690 else if (db->url && strcasecmp("VerifyHost", child->key) == 0)
691 status = cf_util_get_boolean(child, &db->verify_host);
692 else if (db->url && strcasecmp("CACert", child->key) == 0)
693 status = cf_util_get_string(child, &db->cacert);
694 else if (db->url && strcasecmp("Header", child->key) == 0)
695 status = cj_config_append_string("Header", &db->headers, child);
696 else if (db->url && strcasecmp("Post", child->key) == 0)
697 status = cf_util_get_string(child, &db->post_body);
698 else if (strcasecmp("Key", child->key) == 0)
699 status = cj_config_add_key(db, child);
700 else if (strcasecmp("Interval", child->key) == 0)
701 status = cf_util_get_cdtime(child, &db->interval);
702 else if (strcasecmp("Timeout", child->key) == 0)
703 status = cf_util_get_int(child, &db->timeout);
704 else if (strcasecmp("Statistics", child->key) == 0) {
705 db->stats = curl_stats_from_config(child);
706 if (db->stats == NULL)
709 WARNING("curl_json plugin: Option `%s' not allowed here.", child->key);
718 if (db->tree == NULL) {
719 WARNING("curl_json plugin: No (valid) `Key' block within `%s' \"`%s'\".",
720 db->url ? "URL" : "Sock", db->url ? db->url : db->sock);
723 if (status == 0 && db->url)
724 status = cj_init_curl(db);
727 /* If all went well, register this database for reading */
731 if (db->instance == NULL)
732 db->instance = strdup("default");
734 DEBUG("curl_json plugin: Registering new read callback: %s", db->instance);
736 cb_name = ssnprintf_alloc("curl_json-%s-%s", db->instance,
737 db->url ? db->url : db->sock);
739 plugin_register_complex_read(/* group = */ NULL, cb_name, cj_read,
740 /* interval = */ db->interval,
742 .data = db, .free_func = cj_free,
752 /* }}} int cj_config_add_database */
754 static int cj_config(oconfig_item_t *ci) /* {{{ */
763 for (int i = 0; i < ci->children_num; i++) {
764 oconfig_item_t *child = ci->children + i;
766 if (strcasecmp("Sock", child->key) == 0 ||
767 strcasecmp("URL", child->key) == 0) {
768 status = cj_config_add_url(child);
774 WARNING("curl_json plugin: Option `%s' not allowed here.", child->key);
779 if ((success == 0) && (errors > 0)) {
780 ERROR("curl_json plugin: All statements failed.");
785 } /* }}} int cj_config */
787 /* }}} End of configuration handling functions */
789 static const char *cj_host(cj_t *db) /* {{{ */
791 if ((db->host == NULL) || (strcmp("", db->host) == 0) ||
792 (strcmp(CJ_DEFAULT_HOST, db->host) == 0))
797 static void cj_submit_impl(cj_t *db, cj_key_t *key, value_t *value) /* {{{ */
799 value_list_t vl = VALUE_LIST_INIT;
804 if (key->instance == NULL) {
806 for (int i = 0; i < db->depth; i++)
807 len += snprintf(vl.type_instance + len, sizeof(vl.type_instance) - len,
808 i ? "-%s" : "%s", db->state[i + 1].name);
810 sstrncpy(vl.type_instance, key->instance, sizeof(vl.type_instance));
812 sstrncpy(vl.host, cj_host(db), sizeof(vl.host));
813 sstrncpy(vl.plugin, (db->plugin_name != NULL) ? db->plugin_name : "curl_json",
815 sstrncpy(vl.plugin_instance, db->instance, sizeof(vl.plugin_instance));
816 sstrncpy(vl.type, key->type, sizeof(vl.type));
818 if (db->interval > 0)
819 vl.interval = db->interval;
821 plugin_dispatch_values(&vl);
822 } /* }}} int cj_submit_impl */
824 static int cj_sock_perform(cj_t *db) /* {{{ */
826 struct sockaddr_un sa_unix = {
827 .sun_family = AF_UNIX,
829 sstrncpy(sa_unix.sun_path, db->sock, sizeof(sa_unix.sun_path));
831 int fd = socket(AF_UNIX, SOCK_STREAM, 0);
834 if (connect(fd, (struct sockaddr *)&sa_unix, sizeof(sa_unix)) < 0) {
835 ERROR("curl_json plugin: connect(%s) failed: %s",
836 (db->sock != NULL) ? db->sock : "<null>", STRERRNO);
843 unsigned char buffer[4096];
844 red = read(fd, buffer, sizeof(buffer));
846 ERROR("curl_json plugin: read(%s) failed: %s",
847 (db->sock != NULL) ? db->sock : "<null>", STRERRNO);
851 if (!cj_curl_callback(buffer, red, 1, db))
856 } /* }}} int cj_sock_perform */
858 static int cj_curl_perform(cj_t *db) /* {{{ */
864 curl_easy_setopt(db->curl, CURLOPT_URL, db->url);
866 status = curl_easy_perform(db->curl);
867 if (status != CURLE_OK) {
868 ERROR("curl_json plugin: curl_easy_perform failed with status %i: %s (%s)",
869 status, db->curl_errbuf, db->url);
872 if (db->stats != NULL)
873 curl_stats_dispatch(db->stats, db->curl, cj_host(db), "curl_json",
876 curl_easy_getinfo(db->curl, CURLINFO_EFFECTIVE_URL, &url);
877 curl_easy_getinfo(db->curl, CURLINFO_RESPONSE_CODE, &rc);
879 /* The response code is zero if a non-HTTP transport was used. */
880 if ((rc != 0) && (rc != 200)) {
881 ERROR("curl_json plugin: curl_easy_perform failed with "
882 "response code %ld (%s)",
887 } /* }}} int cj_curl_perform */
889 static int cj_perform(cj_t *db) /* {{{ */
892 yajl_handle yprev = db->yajl;
894 db->yajl = yajl_alloc(&ycallbacks,
896 /* alloc funcs = */ NULL,
898 /* alloc funcs = */ NULL, NULL,
900 /* context = */ (void *)db);
901 if (db->yajl == NULL) {
902 ERROR("curl_json plugin: yajl_alloc failed.");
908 status = cj_curl_perform(db);
910 status = cj_sock_perform(db);
918 status = yajl_complete_parse(db->yajl);
920 status = yajl_parse_complete(db->yajl);
922 if (status != yajl_status_ok) {
923 unsigned char *errmsg;
925 errmsg = yajl_get_error(db->yajl, /* verbose = */ 0,
926 /* jsonText = */ NULL, /* jsonTextLen = */ 0);
927 ERROR("curl_json plugin: yajl_parse_complete failed: %s", (char *)errmsg);
928 yajl_free_error(db->yajl, errmsg);
937 } /* }}} int cj_perform */
939 static int cj_read(user_data_t *ud) /* {{{ */
943 if ((ud == NULL) || (ud->data == NULL)) {
944 ERROR("curl_json plugin: cj_read: Invalid user data.");
948 db = (cj_t *)ud->data;
951 memset(&db->state, 0, sizeof(db->state));
953 /* This is not a compound literal because EPEL6's GCC is not cool enough to
954 * handle anonymous unions within compound literals. */
955 cj_tree_entry_t root = {0};
957 root.tree = db->tree;
958 db->state[0].entry = &root;
960 int status = cj_perform(db);
962 db->state[0].entry = NULL;
965 } /* }}} int cj_read */
967 static int cj_init(void) /* {{{ */
969 /* Call this while collectd is still single-threaded to avoid
970 * initialization issues in libgcrypt. */
971 curl_global_init(CURL_GLOBAL_SSL);
973 } /* }}} int cj_init */
975 void module_register(void) {
976 plugin_register_complex_config("curl_json", cj_config);
977 plugin_register_init("curl_json", cj_init);
978 } /* void module_register */