static int cx_handle_parsed_xml(xmlDocPtr doc, /* {{{ */
xmlXPathContextPtr xpath_ctx, cx_t *db)
{
llentry_t *le;
const data_set_t *ds;
cx_xpath_t *xpath;
int status=-1;
le = llist_head (db->list);
while (le != NULL)
{
/* get the ds */
xpath = (cx_xpath_t *) le->value;
ds = plugin_get_ds (xpath->type);
if ( (cx_check_type(ds, xpath) == 0) &&
(cx_handle_base_xpath(db->instance, cx_host (db),
xpath_ctx, ds, le->key, xpath) == 0) )
status = 0; /* we got atleast one success */
le = le->next;
} /* while (le != NULL) */
return status;
} /* }}} cx_handle_parsed_xml */
static int cx_read(user_data_t *ud) /* {{{ */
{
if ((ud == NULL) || (ud->data == NULL)) {
ERROR("curl_xml plugin: cx_read: Invalid user data.");
return -1;
}
long rc;
char *url;
cx_t *db = (cx_t *)ud->data;
db->buffer_fill = 0;
curl_easy_setopt(db->curl, CURLOPT_URL, db->url);
int status = curl_easy_perform(db->curl);
if (status != CURLE_OK) {
ERROR("curl_xml plugin: curl_easy_perform failed with status %i: %s (%s)",
status, db->curl_errbuf, db->url);
return -1;
}
if (db->stats != NULL)
curl_stats_dispatch(db->stats, db->curl, cx_host(db), "curl_xml",
db->instance);
curl_easy_getinfo(db->curl, CURLINFO_EFFECTIVE_URL, &url);
curl_easy_getinfo(db->curl, CURLINFO_RESPONSE_CODE, &rc);
/* The response code is zero if a non-HTTP transport was used. */
if ((rc != 0) && (rc != 200)) {
ERROR(
"curl_xml plugin: curl_easy_perform failed with response code %ld (%s)",
rc, url);
return -1;
}
status = cx_parse_xml(db, db->buffer);
db->buffer_fill = 0;
return status;
} /* }}} int cx_read */
static int cx_curl_perform(cx_t *db, CURL *curl) /* {{{ */
{
int status;
long rc;
char *ptr;
char *url;
db->buffer_fill = 0;
curl_easy_setopt(db->curl, CURLOPT_URL, db->url);
status = curl_easy_perform(curl);
if (status != CURLE_OK) {
ERROR("curl_xml plugin: curl_easy_perform failed with status %i: %s (%s)",
status, db->curl_errbuf, db->url);
return -1;
}
if (db->stats != NULL)
curl_stats_dispatch(db->stats, db->curl, cx_host(db), "curl_xml",
db->instance);
curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &rc);
/* The response code is zero if a non-HTTP transport was used. */
if ((rc != 0) && (rc != 200)) {
ERROR(
"curl_xml plugin: curl_easy_perform failed with response code %ld (%s)",
rc, url);
return -1;
}
ptr = db->buffer;
status = cx_parse_stats_xml(BAD_CAST ptr, db);
db->buffer_fill = 0;
return status;
} /* }}} int cx_curl_perform */
static int cx_handle_xpath(const cx_t *db, /* {{{ */
xmlXPathContextPtr xpath_ctx, cx_xpath_t *xpath) {
const data_set_t *ds = plugin_get_ds(xpath->type);
if (cx_check_type(ds, xpath) != 0)
return -1;
xmlXPathObjectPtr base_node_obj = cx_evaluate_xpath(xpath_ctx, xpath->path);
if (base_node_obj == NULL)
return -1; /* error is logged already */
xmlNodeSetPtr base_nodes = base_node_obj->nodesetval;
int total_nodes = (base_nodes) ? base_nodes->nodeNr : 0;
if (total_nodes == 0) {
ERROR("curl_xml plugin: "
"xpath expression \"%s\" doesn't match any of the nodes. "
"Skipping the xpath block...",
xpath->path);
xmlXPathFreeObject(base_node_obj);
return -1;
}
/* If base_xpath returned multiple results, then */
/* InstanceFrom or PluginInstanceFrom in the xpath block is required */
if (total_nodes > 1 && xpath->instance == NULL &&
xpath->plugin_instance_from == NULL) {
ERROR("curl_xml plugin: "
"InstanceFrom or PluginInstanceFrom is must in xpath block "
"since the base xpath expression \"%s\" "
"returned multiple results. Skipping the xpath block...",
xpath->path);
xmlXPathFreeObject(base_node_obj);
return -1;
}
value_list_t vl = VALUE_LIST_INIT;
/* set the values for the value_list */
vl.values_len = ds->ds_num;
sstrncpy(vl.type, xpath->type, sizeof(vl.type));
sstrncpy(vl.plugin, (db->plugin_name != NULL) ? db->plugin_name : "curl_xml",
sizeof(vl.plugin));
sstrncpy(vl.host, cx_host(db), sizeof(vl.host));
for (int i = 0; i < total_nodes; i++) {
xpath_ctx->node = base_nodes->nodeTab[i];
if (db->instance != NULL)
sstrncpy(vl.plugin_instance, db->instance, sizeof(vl.plugin_instance));
if (cx_handle_instance_xpath(xpath_ctx, xpath, &vl) != 0)
continue; /* An error has already been reported. */
if (cx_handle_all_value_xpaths(xpath_ctx, xpath, ds, &vl) != 0)
continue; /* An error has been logged. */
} /* for (i = 0; i < total_nodes; i++) */
/* free up the allocated memory */
xmlXPathFreeObject(base_node_obj);
return 0;
} /* }}} cx_handle_xpath */
