size_t buffer_size;
size_t buffer_fill;
- llist_t *list; /* list of xpath blocks */
+ llist_t *xpath_list; /* list of xpath blocks */
};
typedef struct cx_s cx_t; /* }}} */
static size_t cx_curl_callback(void *buf, /* {{{ */
size_t size, size_t nmemb, void *user_data) {
size_t len = size * nmemb;
- cx_t *db;
- db = user_data;
+ cx_t *db = user_data;
if (db == NULL) {
ERROR("curl_xml plugin: cx_curl_callback: "
"user_data pointer is NULL.");
return len;
if ((db->buffer_fill + len) >= db->buffer_size) {
- char *temp;
-
- temp = realloc(db->buffer, db->buffer_fill + len + 1);
+ char *temp = realloc(db->buffer, db->buffer_fill + len + 1);
if (temp == NULL) {
ERROR("curl_xml plugin: realloc failed.");
return 0;
sfree(xpath);
} /* }}} void cx_xpath_free */
-static void cx_list_free(llist_t *list) /* {{{ */
+static void cx_xpath_list_free(llist_t *list) /* {{{ */
{
llentry_t *le;
le = llist_head(list);
while (le != NULL) {
- llentry_t *le_next;
-
- le_next = le->next;
+ llentry_t *le_next = le->next;
- sfree(le->key);
cx_xpath_free(le->value);
le = le_next;
curl_easy_cleanup(db->curl);
db->curl = NULL;
- if (db->list != NULL)
- cx_list_free(db->list);
+ if (db->xpath_list != NULL)
+ cx_xpath_list_free(db->xpath_list);
sfree(db->buffer);
sfree(db->instance);
return 0;
} /* }}} cx_check_type */
-static xmlXPathObjectPtr
-cx_evaluate_xpath(xmlXPathContextPtr xpath_ctx, /* {{{ */
- xmlChar *expr) {
- xmlXPathObjectPtr xpath_obj;
-
- /* XXX: When to free this? */
- xpath_obj = xmlXPathEvalExpression(BAD_CAST expr, xpath_ctx);
+static xmlXPathObjectPtr cx_evaluate_xpath(xmlXPathContextPtr xpath_ctx,
+ char *expr) /* {{{ */
+{
+ xmlXPathObjectPtr xpath_obj =
+ xmlXPathEvalExpression(BAD_CAST expr, xpath_ctx);
if (xpath_obj == NULL) {
WARNING("curl_xml plugin: "
"Error unable to evaluate xpath expression \"%s\". Skipping...",
int tmp_size;
char *node_value;
- values_node_obj =
- cx_evaluate_xpath(xpath_ctx, BAD_CAST xpath->values[index].path);
+ values_node_obj = cx_evaluate_xpath(xpath_ctx, xpath->values[index].path);
if (values_node_obj == NULL)
return -1; /* Error already logged. */
cx_xpath_t *xpath, const data_set_t *ds,
value_list_t *vl) {
value_t values[xpath->values_len];
- int status;
assert(xpath->values_len > 0);
assert(xpath->values_len == vl->values_len);
vl->values = values;
for (size_t i = 0; i < xpath->values_len; i++) {
- status = cx_handle_single_value_xpath(xpath_ctx, xpath, ds, vl, i);
- if (status != 0)
+ if (cx_handle_single_value_xpath(xpath_ctx, xpath, ds, vl, i) != 0)
return -1; /* An error has been printed. */
} /* for (i = 0; i < xpath->values_len; i++) */
if (xpath->instance != NULL) {
int tmp_size;
- instance_node_obj = cx_evaluate_xpath(xpath_ctx, BAD_CAST xpath->instance);
+ instance_node_obj = cx_evaluate_xpath(xpath_ctx, xpath->instance);
if (instance_node_obj == NULL)
return -1; /* error is logged already */
/* plugin_instance_from has to be an xpath expression */
if (xpath->plugin_instance_from != NULL) {
- int tmp_size;
-
- instance_node_obj = cx_evaluate_xpath(xpath_ctx,
- BAD_CAST xpath->plugin_instance_from);
+ instance_node_obj =
+ cx_evaluate_xpath(xpath_ctx, xpath->plugin_instance_from);
if (instance_node_obj == NULL)
return -1; /* error is already logged */
instance_node = instance_node_obj->nodesetval;
- tmp_size = (instance_node) ? instance_node->nodeNr : 0;
+ int tmp_size = (instance_node) ? instance_node->nodeNr : 0;
if (tmp_size <= 0) {
WARNING("curl_xml plugin: "
if (instance_node != NULL) {
char *node_value = (char *)xmlNodeGetContent(instance_node->nodeTab[0]);
- sstrncpy (vl->plugin_instance, node_value, sizeof(vl->plugin_instance));
+ sstrncpy(vl->plugin_instance, node_value, sizeof(vl->plugin_instance));
sfree(node_value);
}
return 0;
} /* }}} int cx_handle_instance_xpath */
-static int cx_handle_base_xpath(const cx_t *db, /* {{{ */
- xmlXPathContextPtr xpath_ctx,
- const data_set_t *ds, char *base_xpath,
- cx_xpath_t *xpath) {
- int total_nodes;
+static int cx_handle_xpath(const cx_t *db, /* {{{ */
+ xmlXPathContextPtr xpath_ctx, cx_xpath_t *xpath) {
- xmlXPathObjectPtr base_node_obj = NULL;
- xmlNodeSetPtr base_nodes = NULL;
-
- value_list_t vl = VALUE_LIST_INIT;
+ const data_set_t *ds = plugin_get_ds(xpath->type);
+ if (cx_check_type(ds, xpath) != 0)
+ return -1;
- base_node_obj = cx_evaluate_xpath(xpath_ctx, BAD_CAST base_xpath);
+ xmlXPathObjectPtr base_node_obj = cx_evaluate_xpath(xpath_ctx, xpath->path);
if (base_node_obj == NULL)
return -1; /* error is logged already */
- base_nodes = base_node_obj->nodesetval;
- total_nodes = (base_nodes) ? base_nodes->nodeNr : 0;
+ 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...",
- base_xpath);
+ 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) {
+ /* 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...",
- base_xpath);
+ xpath->path);
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.host, cx_host(db), sizeof(vl.host));
for (int i = 0; i < total_nodes; i++) {
- int status;
-
xpath_ctx->node = base_nodes->nodeTab[i];
if (db->instance != NULL)
- sstrncpy (vl.plugin_instance, db->instance, sizeof (vl.plugin_instance));
+ sstrncpy(vl.plugin_instance, db->instance, sizeof(vl.plugin_instance));
- status = cx_handle_instance_xpath(xpath_ctx, xpath, &vl);
- if (status != 0)
+ if (cx_handle_instance_xpath(xpath_ctx, xpath, &vl) != 0)
continue; /* An error has already been reported. */
- status = cx_handle_all_value_xpaths(xpath_ctx, xpath, ds, &vl);
- if (status != 0)
+ 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++) */
xmlXPathFreeObject(base_node_obj);
return 0;
-} /* }}} cx_handle_base_xpath */
+} /* }}} cx_handle_xpath */
-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;
+static int cx_handle_parsed_xml(cx_t *db, xmlDocPtr doc, /* {{{ */
+ xmlXPathContextPtr xpath_ctx) {
int status = -1;
- le = llist_head(db->list);
+ llentry_t *le = llist_head(db->xpath_list);
while (le != NULL) {
- /* get the ds */
- xpath = (cx_xpath_t *)le->value;
- ds = plugin_get_ds(xpath->type);
+ cx_xpath_t *xpath = (cx_xpath_t *)le->value;
- if ((cx_check_type(ds, xpath) == 0) &&
- (cx_handle_base_xpath(db, xpath_ctx, ds, le->key, xpath) == 0))
+ if (cx_handle_xpath(db, xpath_ctx, xpath) == 0)
status = 0; /* we got atleast one success */
le = le->next;
return status;
} /* }}} cx_handle_parsed_xml */
-static int cx_parse_stats_xml(xmlChar *xml, cx_t *db) /* {{{ */
+static int cx_parse_xml(cx_t *db, char *xml) /* {{{ */
{
- int status;
- xmlDocPtr doc;
- xmlXPathContextPtr xpath_ctx;
-
/* Load the XML */
- doc = xmlParseDoc(xml);
+ xmlDocPtr doc = xmlParseDoc(BAD_CAST xml);
if (doc == NULL) {
ERROR("curl_xml plugin: Failed to parse the xml document - %s", xml);
return -1;
}
- xpath_ctx = xmlXPathNewContext(doc);
+ xmlXPathContextPtr xpath_ctx = xmlXPathNewContext(doc);
if (xpath_ctx == NULL) {
ERROR("curl_xml plugin: Failed to create the xml context");
xmlFreeDoc(doc);
for (size_t i = 0; i < db->namespaces_num; i++) {
cx_namespace_t const *ns = db->namespaces + i;
- status =
+ int status =
xmlXPathRegisterNs(xpath_ctx, BAD_CAST ns->prefix, BAD_CAST ns->url);
if (status != 0) {
ERROR("curl_xml plugin: "
}
}
- status = cx_handle_parsed_xml(doc, xpath_ctx, db);
+ int status = cx_handle_parsed_xml(db, doc, xpath_ctx);
/* Cleanup */
xmlXPathFreeContext(xpath_ctx);
xmlFreeDoc(doc);
return status;
-} /* }}} cx_parse_stats_xml */
+} /* }}} cx_parse_xml */
-static int cx_curl_perform(cx_t *db, CURL *curl) /* {{{ */
+static int cx_read(user_data_t *ud) /* {{{ */
{
- int status;
+ if ((ud == NULL) || (ud->data == NULL)) {
+ ERROR("curl_xml plugin: cx_read: Invalid user data.");
+ return -1;
+ }
+
long rc;
- char *ptr;
char *url;
+ cx_t *db = (cx_t *)ud->data;
db->buffer_fill = 0;
curl_easy_setopt(db->curl, CURLOPT_URL, db->url);
- status = curl_easy_perform(curl);
+ 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);
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);
+ 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)) {
return -1;
}
- ptr = db->buffer;
-
- status = cx_parse_stats_xml(BAD_CAST ptr, db);
+ status = cx_parse_xml(db, db->buffer);
db->buffer_fill = 0;
return status;
-} /* }}} int cx_curl_perform */
-
-static int cx_read(user_data_t *ud) /* {{{ */
-{
- cx_t *db;
-
- if ((ud == NULL) || (ud->data == NULL)) {
- ERROR("curl_xml plugin: cx_read: Invalid user data.");
- return -1;
- }
-
- db = (cx_t *)ud->data;
-
- return cx_curl_perform(db, db->curl);
} /* }}} int cx_read */
/* Configuration handling functions {{{ */
static int cx_config_add_xpath(cx_t *db, oconfig_item_t *ci) /* {{{ */
{
- cx_xpath_t *xpath;
- char *name;
- llentry_t *le;
- int status;
-
- xpath = calloc(1, sizeof(*xpath));
+ cx_xpath_t *xpath = calloc(1, sizeof(*xpath));
if (xpath == NULL) {
ERROR("curl_xml plugin: calloc failed.");
return -1;
}
- status = cf_util_get_string(ci, &xpath->path);
+ int status = cf_util_get_string(ci, &xpath->path);
if (status != 0) {
cx_xpath_free(xpath);
return status;
return -1;
}
- if (db->list == NULL) {
- db->list = llist_create();
- if (db->list == NULL) {
+ if (db->xpath_list == NULL) {
+ db->xpath_list = llist_create();
+ if (db->xpath_list == NULL) {
ERROR("curl_xml plugin: list creation failed.");
cx_xpath_free(xpath);
return -1;
}
}
- name = strdup(xpath->path);
- if (name == NULL) {
- ERROR("curl_xml plugin: strdup failed.");
- cx_xpath_free(xpath);
- return -1;
- }
-
- le = llentry_create(name, xpath);
+ llentry_t *le = llentry_create(xpath->path, xpath);
if (le == NULL) {
ERROR("curl_xml plugin: llentry_create failed.");
cx_xpath_free(xpath);
- sfree(name);
return -1;
}
- llist_append(db->list, le);
+ llist_append(db->xpath_list, le);
return 0;
} /* }}} int cx_config_add_xpath */
static int cx_config_add_namespace(cx_t *db, /* {{{ */
oconfig_item_t *ci) {
- cx_namespace_t *ns;
if ((ci->values_num != 2) || (ci->values[0].type != OCONFIG_TYPE_STRING) ||
(ci->values[1].type != OCONFIG_TYPE_STRING)) {
return EINVAL;
}
- ns = realloc(db->namespaces,
- sizeof(*db->namespaces) * (db->namespaces_num + 1));
+ cx_namespace_t *ns = realloc(
+ db->namespaces, sizeof(*db->namespaces) * (db->namespaces_num + 1));
if (ns == NULL) {
ERROR("curl_xml plugin: realloc failed.");
return ENOMEM;
static int cx_config_add_url(oconfig_item_t *ci) /* {{{ */
{
- cx_t *db;
int status = 0;
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
return -1;
}
- db = calloc(1, sizeof(*db));
+ cx_t *db = calloc(1, sizeof(*db));
if (db == NULL) {
ERROR("curl_xml plugin: calloc failed.");
return -1;
}
if (status == 0) {
- if (db->list == NULL) {
- WARNING("curl_xml plugin: No (valid) `Key' block "
+ if (db->xpath_list == NULL) {
+ WARNING("curl_xml plugin: No (valid) `xpath' block "
"within `URL' block `%s'.",
db->url);
status = -1;
/* If all went well, register this database for reading */
if (status == 0) {
- char *cb_name;
-
if (db->instance == NULL)
db->instance = strdup("default");
DEBUG("curl_xml plugin: Registering new read callback: %s", db->instance);
- cb_name = ssnprintf_alloc("curl_xml-%s-%s", db->instance, db->url);
+ char *cb_name = ssnprintf_alloc("curl_xml-%s-%s", db->instance, db->url);
plugin_register_complex_read(/* group = */ "curl_xml", cb_name, cx_read,
/* interval = */ 0,
static int cx_config(oconfig_item_t *ci) /* {{{ */
{
- int success;
- int errors;
- int status;
-
- success = 0;
- errors = 0;
+ int success = 0;
+ int errors = 0;
for (int i = 0; i < ci->children_num; i++) {
oconfig_item_t *child = ci->children + i;
if (strcasecmp("URL", child->key) == 0) {
- status = cx_config_add_url(child);
- if (status == 0)
+ if (cx_config_add_url(child) == 0)
success++;
else
errors++;
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