2 * collectd - src/curl_xml.c
3 * Copyright (C) 2009,2010 Amit Gupta
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 * Amit Gupta <amit.gupta221 at gmail.com>
26 #include "configfile.h"
27 #include "utils_curl_stats.h"
28 #include "utils_llist.h"
30 #include <libxml/parser.h>
31 #include <libxml/tree.h>
32 #include <libxml/xpath.h>
33 #include <libxml/xpathInternals.h>
35 #include <curl/curl.h>
37 #define CX_DEFAULT_HOST "localhost"
40 * Private data structures
42 struct cx_values_s /* {{{ */
44 char path[DATA_MAX_NAME_LEN];
47 typedef struct cx_values_s cx_values_t;
50 struct cx_xpath_s /* {{{ */
56 char *instance_prefix;
61 typedef struct cx_xpath_s cx_xpath_t;
64 struct cx_namespace_s /* {{{ */
69 typedef struct cx_namespace_s cx_namespace_t;
87 struct curl_slist *headers;
90 cx_namespace_t *namespaces;
91 size_t namespaces_num;
94 char curl_errbuf[CURL_ERROR_SIZE];
99 llist_t *list; /* list of xpath blocks */
101 typedef struct cx_s cx_t; /* }}} */
106 static size_t cx_curl_callback (void *buf, /* {{{ */
107 size_t size, size_t nmemb, void *user_data)
109 size_t len = size * nmemb;
115 ERROR ("curl_xml plugin: cx_curl_callback: "
116 "user_data pointer is NULL.");
123 if ((db->buffer_fill + len) >= db->buffer_size)
127 temp = realloc (db->buffer,
128 db->buffer_fill + len + 1);
131 ERROR ("curl_xml plugin: realloc failed.");
135 db->buffer_size = db->buffer_fill + len + 1;
138 memcpy (db->buffer + db->buffer_fill, (char *) buf, len);
139 db->buffer_fill += len;
140 db->buffer[db->buffer_fill] = 0;
143 } /* }}} size_t cx_curl_callback */
145 static void cx_xpath_free (cx_xpath_t *xpath) /* {{{ */
152 sfree (xpath->instance_prefix);
153 sfree (xpath->instance);
154 sfree (xpath->values);
156 } /* }}} void cx_xpath_free */
158 static void cx_list_free (llist_t *list) /* {{{ */
162 le = llist_head (list);
170 cx_xpath_free (le->value);
175 llist_destroy (list);
176 } /* }}} void cx_list_free */
178 static void cx_free (void *arg) /* {{{ */
183 DEBUG ("curl_xml plugin: cx_free (arg = %p);", arg);
190 if (db->curl != NULL)
191 curl_easy_cleanup (db->curl);
194 if (db->list != NULL)
195 cx_list_free (db->list);
198 sfree (db->instance);
204 sfree (db->credentials);
206 sfree (db->post_body);
207 curl_slist_free_all (db->headers);
208 curl_stats_destroy (db->stats);
210 for (i = 0; i < db->namespaces_num; i++)
212 sfree (db->namespaces[i].prefix);
213 sfree (db->namespaces[i].url);
215 sfree (db->namespaces);
218 } /* }}} void cx_free */
220 static const char *cx_host (cx_t *db) /* {{{ */
222 if (db->host == NULL)
227 static int cx_config_append_string (const char *name, struct curl_slist **dest, /* {{{ */
230 struct curl_slist *temp = NULL;
231 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
233 WARNING ("curl_xml plugin: `%s' needs exactly one string argument.", name);
237 temp = curl_slist_append(*dest, ci->values[0].value.string);
244 } /* }}} int cx_config_append_string */
246 static int cx_check_type (const data_set_t *ds, cx_xpath_t *xpath) /* {{{ */
250 WARNING ("curl_xml plugin: DataSet `%s' not defined.", xpath->type);
254 if (ds->ds_num != xpath->values_len)
256 WARNING ("curl_xml plugin: DataSet `%s' requires %zu values, but config talks about %zu",
257 xpath->type, ds->ds_num, xpath->values_len);
262 } /* }}} cx_check_type */
264 static xmlXPathObjectPtr cx_evaluate_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
267 xmlXPathObjectPtr xpath_obj;
269 /* XXX: When to free this? */
270 xpath_obj = xmlXPathEvalExpression(BAD_CAST expr, xpath_ctx);
271 if (xpath_obj == NULL)
273 WARNING ("curl_xml plugin: "
274 "Error unable to evaluate xpath expression \"%s\". Skipping...", expr);
279 } /* }}} cx_evaluate_xpath */
281 static int cx_if_not_text_node (xmlNodePtr node) /* {{{ */
283 if (node->type == XML_TEXT_NODE || node->type == XML_ATTRIBUTE_NODE ||
284 node->type == XML_ELEMENT_NODE)
287 WARNING ("curl_xml plugin: "
288 "Node \"%s\" doesn't seem to be a text node. Skipping...", node->name);
290 } /* }}} cx_if_not_text_node */
292 static int cx_handle_single_value_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
294 const data_set_t *ds, value_list_t *vl, int index)
296 xmlXPathObjectPtr values_node_obj;
297 xmlNodeSetPtr values_node;
301 values_node_obj = cx_evaluate_xpath (xpath_ctx, BAD_CAST xpath->values[index].path);
302 if (values_node_obj == NULL)
303 return (-1); /* Error already logged. */
305 values_node = values_node_obj->nodesetval;
306 tmp_size = (values_node) ? values_node->nodeNr : 0;
310 WARNING ("curl_xml plugin: "
311 "relative xpath expression \"%s\" doesn't match any of the nodes. "
312 "Skipping...", xpath->values[index].path);
313 xmlXPathFreeObject (values_node_obj);
319 WARNING ("curl_xml plugin: "
320 "relative xpath expression \"%s\" is expected to return "
321 "only one node. Skipping...", xpath->values[index].path);
322 xmlXPathFreeObject (values_node_obj);
326 /* ignoring the element if other than textnode/attribute*/
327 if (cx_if_not_text_node(values_node->nodeTab[0]))
329 WARNING ("curl_xml plugin: "
330 "relative xpath expression \"%s\" is expected to return "
331 "only text/attribute node which is not the case. Skipping...",
332 xpath->values[index].path);
333 xmlXPathFreeObject (values_node_obj);
337 node_value = (char *) xmlNodeGetContent(values_node->nodeTab[0]);
338 switch (ds->ds[index].type)
340 case DS_TYPE_COUNTER:
341 vl->values[index].counter = (counter_t) strtoull (node_value,
342 /* endptr = */ NULL, /* base = */ 0);
345 vl->values[index].derive = (derive_t) strtoll (node_value,
346 /* endptr = */ NULL, /* base = */ 0);
348 case DS_TYPE_ABSOLUTE:
349 vl->values[index].absolute = (absolute_t) strtoull (node_value,
350 /* endptr = */ NULL, /* base = */ 0);
353 vl->values[index].gauge = (gauge_t) strtod (node_value,
354 /* endptr = */ NULL);
358 xmlXPathFreeObject (values_node_obj);
361 /* We have reached here which means that
362 * we have got something to work */
364 } /* }}} int cx_handle_single_value_xpath */
366 static int cx_handle_all_value_xpaths (xmlXPathContextPtr xpath_ctx, /* {{{ */
368 const data_set_t *ds, value_list_t *vl)
370 value_t values[xpath->values_len];
374 assert (xpath->values_len > 0);
375 assert (xpath->values_len == vl->values_len);
376 assert (xpath->values_len == ds->ds_num);
379 for (i = 0; i < xpath->values_len; i++)
381 status = cx_handle_single_value_xpath (xpath_ctx, xpath, ds, vl, i);
383 return (-1); /* An error has been printed. */
384 } /* for (i = 0; i < xpath->values_len; i++) */
386 plugin_dispatch_values (vl);
390 } /* }}} int cx_handle_all_value_xpaths */
392 static int cx_handle_instance_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
393 cx_xpath_t *xpath, value_list_t *vl,
396 xmlXPathObjectPtr instance_node_obj = NULL;
397 xmlNodeSetPtr instance_node = NULL;
399 memset (vl->type_instance, 0, sizeof (vl->type_instance));
401 /* If the base xpath returns more than one block, the result is assumed to be
402 * a table. The `Instance' option is not optional in this case. Check for the
403 * condition and inform the user. */
404 if (is_table && (xpath->instance == NULL))
406 WARNING ("curl_xml plugin: "
407 "Base-XPath %s is a table (more than one result was returned), "
408 "but no instance-XPath has been defined.",
413 /* instance has to be an xpath expression */
414 if (xpath->instance != NULL)
418 instance_node_obj = cx_evaluate_xpath (xpath_ctx, BAD_CAST xpath->instance);
419 if (instance_node_obj == NULL)
420 return (-1); /* error is logged already */
422 instance_node = instance_node_obj->nodesetval;
423 tmp_size = (instance_node) ? instance_node->nodeNr : 0;
427 WARNING ("curl_xml plugin: "
428 "relative xpath expression for 'InstanceFrom' \"%s\" doesn't match "
429 "any of the nodes. Skipping the node.", xpath->instance);
430 xmlXPathFreeObject (instance_node_obj);
436 WARNING ("curl_xml plugin: "
437 "relative xpath expression for 'InstanceFrom' \"%s\" is expected "
438 "to return only one text node. Skipping the node.", xpath->instance);
439 xmlXPathFreeObject (instance_node_obj);
443 /* ignoring the element if other than textnode/attribute */
444 if (cx_if_not_text_node(instance_node->nodeTab[0]))
446 WARNING ("curl_xml plugin: "
447 "relative xpath expression \"%s\" is expected to return only text node "
448 "which is not the case. Skipping the node.", xpath->instance);
449 xmlXPathFreeObject (instance_node_obj);
452 } /* if (xpath->instance != NULL) */
454 if (xpath->instance_prefix != NULL)
456 if (instance_node != NULL)
458 char *node_value = (char *) xmlNodeGetContent(instance_node->nodeTab[0]);
459 ssnprintf (vl->type_instance, sizeof (vl->type_instance),"%s%s",
460 xpath->instance_prefix, node_value);
464 sstrncpy (vl->type_instance, xpath->instance_prefix,
465 sizeof (vl->type_instance));
469 /* If instance_prefix and instance_node are NULL, then
470 * don't set the type_instance */
471 if (instance_node != NULL)
473 char *node_value = (char *) xmlNodeGetContent(instance_node->nodeTab[0]);
474 sstrncpy (vl->type_instance, node_value, sizeof (vl->type_instance));
479 /* Free `instance_node_obj' this late, because `instance_node' points to
480 * somewhere inside this structure. */
481 xmlXPathFreeObject (instance_node_obj);
484 } /* }}} int cx_handle_instance_xpath */
486 static int cx_handle_base_xpath (char const *plugin_instance, /* {{{ */
488 xmlXPathContextPtr xpath_ctx, const data_set_t *ds,
489 char *base_xpath, cx_xpath_t *xpath)
494 xmlXPathObjectPtr base_node_obj = NULL;
495 xmlNodeSetPtr base_nodes = NULL;
497 value_list_t vl = VALUE_LIST_INIT;
499 base_node_obj = cx_evaluate_xpath (xpath_ctx, BAD_CAST base_xpath);
500 if (base_node_obj == NULL)
501 return -1; /* error is logged already */
503 base_nodes = base_node_obj->nodesetval;
504 total_nodes = (base_nodes) ? base_nodes->nodeNr : 0;
506 if (total_nodes == 0)
508 ERROR ("curl_xml plugin: "
509 "xpath expression \"%s\" doesn't match any of the nodes. "
510 "Skipping the xpath block...", base_xpath);
511 xmlXPathFreeObject (base_node_obj);
515 /* If base_xpath returned multiple results, then */
516 /* Instance in the xpath block is required */
517 if (total_nodes > 1 && xpath->instance == NULL)
519 ERROR ("curl_xml plugin: "
520 "InstanceFrom is must in xpath block since the base xpath expression \"%s\" "
521 "returned multiple results. Skipping the xpath block...", base_xpath);
525 /* set the values for the value_list */
526 vl.values_len = ds->ds_num;
527 sstrncpy (vl.type, xpath->type, sizeof (vl.type));
528 sstrncpy (vl.plugin, "curl_xml", sizeof (vl.plugin));
529 sstrncpy (vl.host, host, sizeof (vl.host));
530 if (plugin_instance != NULL)
531 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
533 for (i = 0; i < total_nodes; i++)
537 xpath_ctx->node = base_nodes->nodeTab[i];
539 status = cx_handle_instance_xpath (xpath_ctx, xpath, &vl,
540 /* is_table = */ (total_nodes > 1));
542 continue; /* An error has already been reported. */
544 status = cx_handle_all_value_xpaths (xpath_ctx, xpath, ds, &vl);
546 continue; /* An error has been logged. */
547 } /* for (i = 0; i < total_nodes; i++) */
549 /* free up the allocated memory */
550 xmlXPathFreeObject (base_node_obj);
553 } /* }}} cx_handle_base_xpath */
555 static int cx_handle_parsed_xml(xmlDocPtr doc, /* {{{ */
556 xmlXPathContextPtr xpath_ctx, cx_t *db)
559 const data_set_t *ds;
564 le = llist_head (db->list);
568 xpath = (cx_xpath_t *) le->value;
569 ds = plugin_get_ds (xpath->type);
571 if ( (cx_check_type(ds, xpath) == 0) &&
572 (cx_handle_base_xpath(db->instance, cx_host (db),
573 xpath_ctx, ds, le->key, xpath) == 0) )
574 status = 0; /* we got atleast one success */
577 } /* while (le != NULL) */
580 } /* }}} cx_handle_parsed_xml */
582 static int cx_parse_stats_xml(xmlChar* xml, cx_t *db) /* {{{ */
586 xmlXPathContextPtr xpath_ctx;
590 doc = xmlParseDoc(xml);
593 ERROR ("curl_xml plugin: Failed to parse the xml document - %s", xml);
597 xpath_ctx = xmlXPathNewContext(doc);
598 if(xpath_ctx == NULL)
600 ERROR ("curl_xml plugin: Failed to create the xml context");
605 for (i = 0; i < db->namespaces_num; i++)
607 cx_namespace_t const *ns = db->namespaces + i;
608 status = xmlXPathRegisterNs (xpath_ctx,
609 BAD_CAST ns->prefix, BAD_CAST ns->url);
612 ERROR ("curl_xml plugin: "
613 "unable to register NS with prefix=\"%s\" and href=\"%s\"\n",
614 ns->prefix, ns->url);
615 xmlXPathFreeContext(xpath_ctx);
621 status = cx_handle_parsed_xml (doc, xpath_ctx, db);
623 xmlXPathFreeContext(xpath_ctx);
626 } /* }}} cx_parse_stats_xml */
628 static int cx_curl_perform (cx_t *db, CURL *curl) /* {{{ */
637 status = curl_easy_perform (curl);
638 if (status != CURLE_OK)
640 ERROR ("curl_xml plugin: curl_easy_perform failed with status %i: %s (%s)",
641 status, db->curl_errbuf, url);
644 if (db->stats != NULL)
645 curl_stats_dispatch (db->stats, db->curl, cx_host (db), "curl_xml", db->instance);
647 curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
648 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &rc);
650 /* The response code is zero if a non-HTTP transport was used. */
651 if ((rc != 0) && (rc != 200))
653 ERROR ("curl_xml plugin: curl_easy_perform failed with response code %ld (%s)",
660 status = cx_parse_stats_xml(BAD_CAST ptr, db);
664 } /* }}} int cx_curl_perform */
666 static int cx_read (user_data_t *ud) /* {{{ */
670 if ((ud == NULL) || (ud->data == NULL))
672 ERROR ("curl_xml plugin: cx_read: Invalid user data.");
676 db = (cx_t *) ud->data;
678 return cx_curl_perform (db, db->curl);
679 } /* }}} int cx_read */
681 /* Configuration handling functions {{{ */
683 static int cx_config_add_values (const char *name, cx_xpath_t *xpath, /* {{{ */
688 if (ci->values_num < 1)
690 WARNING ("curl_xml plugin: `ValuesFrom' needs at least one argument.");
694 for (i = 0; i < ci->values_num; i++)
695 if (ci->values[i].type != OCONFIG_TYPE_STRING)
697 WARNING ("curl_xml plugin: `ValuesFrom' needs only string argument.");
701 sfree (xpath->values);
703 xpath->values_len = 0;
704 xpath->values = malloc (sizeof (cx_values_t) * ci->values_num);
705 if (xpath->values == NULL)
707 xpath->values_len = (size_t) ci->values_num;
709 /* populate cx_values_t structure */
710 for (i = 0; i < ci->values_num; i++)
712 xpath->values[i].path_len = sizeof (ci->values[i].value.string);
713 sstrncpy (xpath->values[i].path, ci->values[i].value.string, sizeof (xpath->values[i].path));
717 } /* }}} cx_config_add_values */
719 static int cx_config_add_xpath (cx_t *db, oconfig_item_t *ci) /* {{{ */
727 xpath = calloc (1, sizeof (*xpath));
730 ERROR ("curl_xml plugin: calloc failed.");
734 status = cf_util_get_string (ci, &xpath->path);
737 cx_xpath_free (xpath);
741 /* error out if xpath->path is an empty string */
742 if (strlen (xpath->path) == 0)
744 ERROR ("curl_xml plugin: invalid xpath. "
745 "xpath value can't be an empty string");
746 cx_xpath_free (xpath);
751 for (i = 0; i < ci->children_num; i++)
753 oconfig_item_t *child = ci->children + i;
755 if (strcasecmp ("Type", child->key) == 0)
756 status = cf_util_get_string (child, &xpath->type);
757 else if (strcasecmp ("InstancePrefix", child->key) == 0)
758 status = cf_util_get_string (child, &xpath->instance_prefix);
759 else if (strcasecmp ("InstanceFrom", child->key) == 0)
760 status = cf_util_get_string (child, &xpath->instance);
761 else if (strcasecmp ("ValuesFrom", child->key) == 0)
762 status = cx_config_add_values ("ValuesFrom", xpath, child);
765 WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
771 } /* for (i = 0; i < ci->children_num; i++) */
775 cx_xpath_free (xpath);
779 if (xpath->type == NULL)
781 WARNING ("curl_xml plugin: `Type' missing in `xpath' block.");
782 cx_xpath_free (xpath);
786 if (db->list == NULL)
788 db->list = llist_create();
789 if (db->list == NULL)
791 ERROR ("curl_xml plugin: list creation failed.");
792 cx_xpath_free (xpath);
797 name = strdup (xpath->path);
800 ERROR ("curl_xml plugin: strdup failed.");
801 cx_xpath_free (xpath);
805 le = llentry_create (name, xpath);
808 ERROR ("curl_xml plugin: llentry_create failed.");
809 cx_xpath_free (xpath);
814 llist_append (db->list, le);
816 } /* }}} int cx_config_add_xpath */
818 static int cx_config_add_namespace (cx_t *db, /* {{{ */
823 if ((ci->values_num != 2)
824 || (ci->values[0].type != OCONFIG_TYPE_STRING)
825 || (ci->values[1].type != OCONFIG_TYPE_STRING))
827 WARNING ("curl_xml plugin: The `Namespace' option "
828 "needs exactly two string arguments.");
832 ns = realloc (db->namespaces, sizeof (*db->namespaces)
833 * (db->namespaces_num + 1));
836 ERROR ("curl_xml plugin: realloc failed.");
840 ns = db->namespaces + db->namespaces_num;
841 memset (ns, 0, sizeof (*ns));
843 ns->prefix = strdup (ci->values[0].value.string);
844 ns->url = strdup (ci->values[1].value.string);
846 if ((ns->prefix == NULL) || (ns->url == NULL))
850 ERROR ("curl_xml plugin: strdup failed.");
854 db->namespaces_num++;
856 } /* }}} int cx_config_add_namespace */
858 /* Initialize db->curl */
859 static int cx_init_curl (cx_t *db) /* {{{ */
861 db->curl = curl_easy_init ();
862 if (db->curl == NULL)
864 ERROR ("curl_xml plugin: curl_easy_init failed.");
868 curl_easy_setopt (db->curl, CURLOPT_NOSIGNAL, 1L);
869 curl_easy_setopt (db->curl, CURLOPT_WRITEFUNCTION, cx_curl_callback);
870 curl_easy_setopt (db->curl, CURLOPT_WRITEDATA, db);
871 curl_easy_setopt (db->curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
872 curl_easy_setopt (db->curl, CURLOPT_ERRORBUFFER, db->curl_errbuf);
873 curl_easy_setopt (db->curl, CURLOPT_URL, db->url);
874 curl_easy_setopt (db->curl, CURLOPT_FOLLOWLOCATION, 1L);
875 curl_easy_setopt (db->curl, CURLOPT_MAXREDIRS, 50L);
877 if (db->user != NULL)
879 #ifdef HAVE_CURLOPT_USERNAME
880 curl_easy_setopt (db->curl, CURLOPT_USERNAME, db->user);
881 curl_easy_setopt (db->curl, CURLOPT_PASSWORD,
882 (db->pass == NULL) ? "" : db->pass);
884 size_t credentials_size;
886 credentials_size = strlen (db->user) + 2;
887 if (db->pass != NULL)
888 credentials_size += strlen (db->pass);
890 db->credentials = malloc (credentials_size);
891 if (db->credentials == NULL)
893 ERROR ("curl_xml plugin: malloc failed.");
897 ssnprintf (db->credentials, credentials_size, "%s:%s",
898 db->user, (db->pass == NULL) ? "" : db->pass);
899 curl_easy_setopt (db->curl, CURLOPT_USERPWD, db->credentials);
903 curl_easy_setopt (db->curl, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
906 curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYPEER, db->verify_peer ? 1L : 0L);
907 curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYHOST,
908 db->verify_host ? 2L : 0L);
909 if (db->cacert != NULL)
910 curl_easy_setopt (db->curl, CURLOPT_CAINFO, db->cacert);
911 if (db->headers != NULL)
912 curl_easy_setopt (db->curl, CURLOPT_HTTPHEADER, db->headers);
913 if (db->post_body != NULL)
914 curl_easy_setopt (db->curl, CURLOPT_POSTFIELDS, db->post_body);
916 #ifdef HAVE_CURLOPT_TIMEOUT_MS
917 if (db->timeout >= 0)
918 curl_easy_setopt (db->curl, CURLOPT_TIMEOUT_MS, (long) db->timeout);
920 curl_easy_setopt (db->curl, CURLOPT_TIMEOUT_MS, (long) CDTIME_T_TO_MS(plugin_get_interval()));
924 } /* }}} int cx_init_curl */
926 static int cx_config_add_url (oconfig_item_t *ci) /* {{{ */
932 if ((ci->values_num != 1)
933 || (ci->values[0].type != OCONFIG_TYPE_STRING))
935 WARNING ("curl_xml plugin: The `URL' block "
936 "needs exactly one string argument.");
940 db = calloc (1, sizeof (*db));
943 ERROR ("curl_xml plugin: calloc failed.");
949 if (strcasecmp ("URL", ci->key) == 0)
951 status = cf_util_get_string (ci, &db->url);
960 ERROR ("curl_xml plugin: cx_config: "
961 "Invalid key: %s", ci->key);
966 /* Fill the `cx_t' structure.. */
967 for (i = 0; i < ci->children_num; i++)
969 oconfig_item_t *child = ci->children + i;
971 if (strcasecmp ("Instance", child->key) == 0)
972 status = cf_util_get_string (child, &db->instance);
973 else if (strcasecmp ("Host", child->key) == 0)
974 status = cf_util_get_string (child, &db->host);
975 else if (strcasecmp ("User", child->key) == 0)
976 status = cf_util_get_string (child, &db->user);
977 else if (strcasecmp ("Password", child->key) == 0)
978 status = cf_util_get_string (child, &db->pass);
979 else if (strcasecmp ("Digest", child->key) == 0)
980 status = cf_util_get_boolean (child, &db->digest);
981 else if (strcasecmp ("VerifyPeer", child->key) == 0)
982 status = cf_util_get_boolean (child, &db->verify_peer);
983 else if (strcasecmp ("VerifyHost", child->key) == 0)
984 status = cf_util_get_boolean (child, &db->verify_host);
985 else if (strcasecmp ("CACert", child->key) == 0)
986 status = cf_util_get_string (child, &db->cacert);
987 else if (strcasecmp ("xpath", child->key) == 0)
988 status = cx_config_add_xpath (db, child);
989 else if (strcasecmp ("Header", child->key) == 0)
990 status = cx_config_append_string ("Header", &db->headers, child);
991 else if (strcasecmp ("Post", child->key) == 0)
992 status = cf_util_get_string (child, &db->post_body);
993 else if (strcasecmp ("Namespace", child->key) == 0)
994 status = cx_config_add_namespace (db, child);
995 else if (strcasecmp ("Timeout", child->key) == 0)
996 status = cf_util_get_int (child, &db->timeout);
997 else if (strcasecmp ("Statistics", child->key) == 0)
999 db->stats = curl_stats_from_config (child);
1000 if (db->stats == NULL)
1005 WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
1015 if (db->list == NULL)
1017 WARNING ("curl_xml plugin: No (valid) `Key' block "
1018 "within `URL' block `%s'.", db->url);
1022 status = cx_init_curl (db);
1025 /* If all went well, register this database for reading */
1028 user_data_t ud = { 0 };
1031 if (db->instance == NULL)
1032 db->instance = strdup("default");
1034 DEBUG ("curl_xml plugin: Registering new read callback: %s",
1037 ud.data = (void *) db;
1038 ud.free_func = cx_free;
1040 cb_name = ssnprintf_alloc ("curl_xml-%s-%s", db->instance, db->url);
1041 plugin_register_complex_read (/* group = */ "curl_xml", cb_name, cx_read,
1042 /* interval = */ 0, &ud);
1052 } /* }}} int cx_config_add_url */
1054 /* }}} End of configuration handling functions */
1056 static int cx_config (oconfig_item_t *ci) /* {{{ */
1066 for (i = 0; i < ci->children_num; i++)
1068 oconfig_item_t *child = ci->children + i;
1070 if (strcasecmp ("URL", child->key) == 0)
1072 status = cx_config_add_url (child);
1080 WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
1085 if ((success == 0) && (errors > 0))
1087 ERROR ("curl_xml plugin: All statements failed.");
1092 } /* }}} int cx_config */
1094 static int cx_init (void) /* {{{ */
1096 /* Call this while collectd is still single-threaded to avoid
1097 * initialization issues in libgcrypt. */
1098 curl_global_init (CURL_GLOBAL_SSL);
1100 } /* }}} int cx_init */
1102 void module_register (void)
1104 plugin_register_complex_config ("curl_xml", cx_config);
1105 plugin_register_init ("curl_xml", cx_init);
1106 } /* void module_register */
1108 /* vim: set sw=2 sts=2 et fdm=marker : */