size_t values_len;
char *instance_prefix;
char *instance;
+ char *plugin_instance_from;
int is_table;
unsigned long magic;
};
struct cx_s /* {{{ */
{
char *instance;
+ char *plugin_name;
char *host;
char *url;
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 (0);
+ return 0;
}
if (len == 0)
- return (len);
+ 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);
+ return 0;
}
db->buffer = temp;
db->buffer_size = db->buffer_fill + len + 1;
db->buffer_fill += len;
db->buffer[db->buffer_fill] = 0;
- return (len);
+ return len;
} /* }}} size_t cx_curl_callback */
static void cx_xpath_free(cx_xpath_t *xpath) /* {{{ */
sfree(xpath->path);
sfree(xpath->type);
sfree(xpath->instance_prefix);
+ sfree(xpath->plugin_instance_from);
sfree(xpath->instance);
sfree(xpath->values);
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;
+ llentry_t *le_next = le->next;
- le_next = le->next;
-
- sfree(le->key);
+ /* this also frees xpath->path used for le->key */
cx_xpath_free(le->value);
le = le_next;
}
llist_destroy(list);
-} /* }}} void cx_list_free */
+} /* }}} void cx_xpath_list_free */
static void cx_free(void *arg) /* {{{ */
{
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);
+ sfree(db->plugin_name);
sfree(db->host);
sfree(db->url);
sfree(db);
} /* }}} void cx_free */
-static const char *cx_host(cx_t *db) /* {{{ */
+static const char *cx_host(const cx_t *db) /* {{{ */
{
if (db->host == NULL)
return hostname_g;
struct curl_slist *temp = NULL;
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
WARNING("curl_xml plugin: `%s' needs exactly one string argument.", name);
- return (-1);
+ return -1;
}
temp = curl_slist_append(*dest, ci->values[0].value.string);
if (temp == NULL)
- return (-1);
+ return -1;
*dest = temp;
- return (0);
+ return 0;
} /* }}} int cx_config_append_string */
static int cx_check_type(const data_set_t *ds, cx_xpath_t *xpath) /* {{{ */
{
if (!ds) {
WARNING("curl_xml plugin: DataSet `%s' not defined.", xpath->type);
- return (-1);
+ return -1;
}
if (ds->ds_num != xpath->values_len) {
- WARNING("curl_xml plugin: DataSet `%s' requires %zu values, but config "
- "talks about %zu",
+ WARNING("curl_xml plugin: DataSet `%s' requires %" PRIsz
+ " values, but config talks about %" PRIsz,
xpath->type, ds->ds_num, xpath->values_len);
- return (-1);
+ return -1;
}
- return (0);
+ 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...",
{
if (node->type == XML_TEXT_NODE || node->type == XML_ATTRIBUTE_NODE ||
node->type == XML_ELEMENT_NODE)
- return (0);
+ return 0;
WARNING("curl_xml plugin: "
"Node \"%s\" doesn't seem to be a text node. Skipping...",
return -1;
} /* }}} cx_if_not_text_node */
-static int cx_handle_single_value_xpath(xmlXPathContextPtr xpath_ctx, /* {{{ */
- cx_xpath_t *xpath, const data_set_t *ds,
- value_list_t *vl, int index) {
- xmlXPathObjectPtr values_node_obj;
- xmlNodeSetPtr values_node;
- int tmp_size;
- char *node_value;
-
- values_node_obj =
- cx_evaluate_xpath(xpath_ctx, BAD_CAST xpath->values[index].path);
+/*
+ * Returned value should be freed with xmlFree().
+ */
+static char *cx_get_text_node_value(xmlXPathContextPtr xpath_ctx, /* {{{ */
+ char *expr, const char *from_option) {
+ xmlXPathObjectPtr values_node_obj = cx_evaluate_xpath(xpath_ctx, expr);
if (values_node_obj == NULL)
- return (-1); /* Error already logged. */
+ return NULL; /* Error already logged. */
- values_node = values_node_obj->nodesetval;
- tmp_size = (values_node) ? values_node->nodeNr : 0;
+ xmlNodeSetPtr values_node = values_node_obj->nodesetval;
+ size_t tmp_size = (values_node) ? values_node->nodeNr : 0;
if (tmp_size == 0) {
WARNING("curl_xml plugin: "
- "relative xpath expression \"%s\" doesn't match any of the nodes. "
- "Skipping...",
- xpath->values[index].path);
+ "relative xpath expression \"%s\" from '%s' doesn't match "
+ "any of the nodes.",
+ expr, from_option);
xmlXPathFreeObject(values_node_obj);
- return (-1);
+ return NULL;
}
if (tmp_size > 1) {
WARNING("curl_xml plugin: "
- "relative xpath expression \"%s\" is expected to return "
- "only one node. Skipping...",
- xpath->values[index].path);
+ "relative xpath expression \"%s\" from '%s' is expected to return "
+ "only one text node. Skipping the node.",
+ expr, from_option);
xmlXPathFreeObject(values_node_obj);
- return (-1);
+ return NULL;
}
/* ignoring the element if other than textnode/attribute*/
if (cx_if_not_text_node(values_node->nodeTab[0])) {
WARNING("curl_xml plugin: "
- "relative xpath expression \"%s\" is expected to return "
- "only text/attribute node which is not the case. Skipping...",
- xpath->values[index].path);
+ "relative xpath expression \"%s\" from '%s' is expected to return "
+ "only text/attribute node which is not the case. "
+ "Skipping the node.",
+ expr, from_option);
xmlXPathFreeObject(values_node_obj);
- return (-1);
+ return NULL;
}
- node_value = (char *)xmlNodeGetContent(values_node->nodeTab[0]);
+ char *node_value = (char *)xmlNodeGetContent(values_node->nodeTab[0]);
+
+ /* free up object */
+ xmlXPathFreeObject(values_node_obj);
+
+ return node_value;
+} /* }}} char * cx_get_text_node_value */
+
+static int cx_handle_single_value_xpath(xmlXPathContextPtr xpath_ctx, /* {{{ */
+ cx_xpath_t *xpath, const data_set_t *ds,
+ value_list_t *vl, int index) {
+
+ char *node_value = cx_get_text_node_value(
+ xpath_ctx, xpath->values[index].path, "ValuesFrom");
+
+ if (node_value == NULL)
+ return -1;
+
switch (ds->ds[index].type) {
case DS_TYPE_COUNTER:
vl->values[index].counter =
/* endptr = */ NULL);
}
- /* free up object */
- xmlXPathFreeObject(values_node_obj);
- sfree(node_value);
+ xmlFree(node_value);
/* We have reached here which means that
* we have got something to work */
- return (0);
+ return 0;
} /* }}} int cx_handle_single_value_xpath */
static int cx_handle_all_value_xpaths(xmlXPathContextPtr xpath_ctx, /* {{{ */
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)
- return (-1); /* An error has been printed. */
- } /* for (i = 0; i < xpath->values_len; i++) */
+ 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++) */
plugin_dispatch_values(vl);
vl->values = NULL;
- return (0);
+ return 0;
} /* }}} int cx_handle_all_value_xpaths */
static int cx_handle_instance_xpath(xmlXPathContextPtr xpath_ctx, /* {{{ */
- cx_xpath_t *xpath, value_list_t *vl,
- _Bool is_table) {
- xmlXPathObjectPtr instance_node_obj = NULL;
- xmlNodeSetPtr instance_node = NULL;
+ cx_xpath_t *xpath, value_list_t *vl) {
- memset(vl->type_instance, 0, sizeof(vl->type_instance));
+ /* Handle type instance */
+ if (xpath->instance != NULL) {
+ char *node_value =
+ cx_get_text_node_value(xpath_ctx, xpath->instance, "InstanceFrom");
+ if (node_value == NULL)
+ return -1;
+
+ if (xpath->instance_prefix != NULL)
+ snprintf(vl->type_instance, sizeof(vl->type_instance), "%s%s",
+ xpath->instance_prefix, node_value);
+ else
+ sstrncpy(vl->type_instance, node_value, sizeof(vl->type_instance));
- /* If the base xpath returns more than one block, the result is assumed to be
- * a table. The `Instance' option is not optional in this case. Check for the
- * condition and inform the user. */
- if (is_table && (xpath->instance == NULL)) {
- WARNING("curl_xml plugin: "
- "Base-XPath %s is a table (more than one result was returned), "
- "but no instance-XPath has been defined.",
- xpath->path);
- return (-1);
- }
+ xmlFree(node_value);
+ } else if (xpath->instance_prefix != NULL)
+ sstrncpy(vl->type_instance, xpath->instance_prefix,
+ sizeof(vl->type_instance));
- /* instance has to be an xpath expression */
- if (xpath->instance != NULL) {
- int tmp_size;
-
- instance_node_obj = cx_evaluate_xpath(xpath_ctx, BAD_CAST xpath->instance);
- if (instance_node_obj == NULL)
- return (-1); /* error is logged already */
-
- instance_node = instance_node_obj->nodesetval;
- tmp_size = (instance_node) ? instance_node->nodeNr : 0;
-
- if (tmp_size <= 0) {
- WARNING(
- "curl_xml plugin: "
- "relative xpath expression for 'InstanceFrom' \"%s\" doesn't match "
- "any of the nodes. Skipping the node.",
- xpath->instance);
- xmlXPathFreeObject(instance_node_obj);
- return (-1);
- }
+ /* Handle plugin instance */
+ if (xpath->plugin_instance_from != NULL) {
+ char *node_value = cx_get_text_node_value(
+ xpath_ctx, xpath->plugin_instance_from, "PluginInstanceFrom");
- if (tmp_size > 1) {
- WARNING("curl_xml plugin: "
- "relative xpath expression for 'InstanceFrom' \"%s\" is expected "
- "to return only one text node. Skipping the node.",
- xpath->instance);
- xmlXPathFreeObject(instance_node_obj);
- return (-1);
- }
+ if (node_value == NULL)
+ return -1;
- /* ignoring the element if other than textnode/attribute */
- if (cx_if_not_text_node(instance_node->nodeTab[0])) {
- WARNING("curl_xml plugin: "
- "relative xpath expression \"%s\" is expected to return only "
- "text node "
- "which is not the case. Skipping the node.",
- xpath->instance);
- xmlXPathFreeObject(instance_node_obj);
- return (-1);
- }
- } /* if (xpath->instance != NULL) */
-
- if (xpath->instance_prefix != NULL) {
- if (instance_node != NULL) {
- char *node_value = (char *)xmlNodeGetContent(instance_node->nodeTab[0]);
- ssnprintf(vl->type_instance, sizeof(vl->type_instance), "%s%s",
- xpath->instance_prefix, node_value);
- sfree(node_value);
- } else
- sstrncpy(vl->type_instance, xpath->instance_prefix,
- sizeof(vl->type_instance));
- } else {
- /* If instance_prefix and instance_node are NULL, then
- * don't set the type_instance */
- if (instance_node != NULL) {
- char *node_value = (char *)xmlNodeGetContent(instance_node->nodeTab[0]);
- sstrncpy(vl->type_instance, node_value, sizeof(vl->type_instance));
- sfree(node_value);
- }
+ sstrncpy(vl->plugin_instance, node_value, sizeof(vl->plugin_instance));
+ xmlFree(node_value);
}
- /* Free `instance_node_obj' this late, because `instance_node' points to
- * somewhere inside this structure. */
- xmlXPathFreeObject(instance_node_obj);
-
- return (0);
+ return 0;
} /* }}} int cx_handle_instance_xpath */
-static int cx_handle_base_xpath(char const *plugin_instance, /* {{{ */
- char const *host, 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 */
- /* Instance in the xpath block is required */
- if (total_nodes > 1 && xpath->instance == 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 is must in xpath block since the base xpath expression "
- "\"%s\" "
+ "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);
+ 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, "curl_xml", sizeof(vl.plugin));
- sstrncpy(vl.host, host, sizeof(vl.host));
- if (plugin_instance != NULL)
- sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
+ 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++) {
- int status;
-
xpath_ctx->node = base_nodes->nodeTab[i];
- status = cx_handle_instance_xpath(xpath_ctx, xpath, &vl,
- /* is_table = */ (total_nodes > 1));
- if (status != 0)
+ 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. */
- 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++) */
/* free up the allocated memory */
xmlXPathFreeObject(base_node_obj);
- return (0);
-} /* }}} cx_handle_base_xpath */
+ return 0;
+} /* }}} 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->instance, cx_host(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);
+ 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);
- return (-1);
+ return -1;
}
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: "
ns->prefix, ns->url);
xmlXPathFreeContext(xpath_ctx);
xmlFreeDoc(doc);
- return (status);
+ return status;
}
}
- 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);
- return (-1);
+ 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);
+ 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);
+ 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 {{{ */
oconfig_item_t *ci) {
if (ci->values_num < 1) {
WARNING("curl_xml plugin: `ValuesFrom' needs at least one argument.");
- return (-1);
+ return -1;
}
for (int i = 0; i < ci->values_num; i++)
if (ci->values[i].type != OCONFIG_TYPE_STRING) {
WARNING("curl_xml plugin: `ValuesFrom' needs only string argument.");
- return (-1);
+ return -1;
}
sfree(xpath->values);
xpath->values_len = 0;
xpath->values = malloc(sizeof(cx_values_t) * ci->values_num);
if (xpath->values == NULL)
- return (-1);
+ return -1;
xpath->values_len = (size_t)ci->values_num;
/* populate cx_values_t structure */
sizeof(xpath->values[i].path));
}
- return (0);
+ return 0;
} /* }}} cx_config_add_values */
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);
+ 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 status;
}
/* error out if xpath->path is an empty string */
ERROR("curl_xml plugin: invalid xpath. "
"xpath value can't be an empty string");
cx_xpath_free(xpath);
- return (-1);
+ return -1;
}
status = 0;
status = cf_util_get_string(child, &xpath->instance_prefix);
else if (strcasecmp("InstanceFrom", child->key) == 0)
status = cf_util_get_string(child, &xpath->instance);
+ else if (strcasecmp("PluginInstanceFrom", child->key) == 0)
+ status = cf_util_get_string(child, &xpath->plugin_instance_from);
else if (strcasecmp("ValuesFrom", child->key) == 0)
status = cx_config_add_values("ValuesFrom", xpath, child);
else {
return -1;
}
- if (db->list == NULL) {
- db->list = llist_create();
- if (db->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.");
+ if (xpath->values_len == 0) {
+ WARNING("curl_xml plugin: `ValuesFrom' missing in `xpath' block.");
cx_xpath_free(xpath);
- return (-1);
+ 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);
+ return -1;
}
- llist_append(db->list, le);
- return (0);
+ 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)) {
WARNING("curl_xml plugin: The `Namespace' option "
"needs exactly two string arguments.");
- return (EINVAL);
+ 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);
+ return ENOMEM;
}
db->namespaces = ns;
ns = db->namespaces + db->namespaces_num;
sfree(ns->prefix);
sfree(ns->url);
ERROR("curl_xml plugin: strdup failed.");
- return (ENOMEM);
+ return ENOMEM;
}
db->namespaces_num++;
- return (0);
+ return 0;
} /* }}} int cx_config_add_namespace */
/* Initialize db->curl */
db->curl = curl_easy_init();
if (db->curl == NULL) {
ERROR("curl_xml plugin: curl_easy_init failed.");
- return (-1);
+ return -1;
}
curl_easy_setopt(db->curl, CURLOPT_NOSIGNAL, 1L);
db->credentials = malloc(credentials_size);
if (db->credentials == NULL) {
ERROR("curl_xml plugin: malloc failed.");
- return (-1);
+ return -1;
}
- ssnprintf(db->credentials, credentials_size, "%s:%s", db->user,
- (db->pass == NULL) ? "" : db->pass);
+ snprintf(db->credentials, credentials_size, "%s:%s", db->user,
+ (db->pass == NULL) ? "" : db->pass);
curl_easy_setopt(db->curl, CURLOPT_USERPWD, db->credentials);
#endif
(long)CDTIME_T_TO_MS(plugin_get_interval()));
#endif
- return (0);
+ return 0;
} /* }}} int cx_init_curl */
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)) {
WARNING("curl_xml plugin: The `URL' block "
"needs exactly one string argument.");
- return (-1);
+ 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);
+ return -1;
+ }
+
+ db->instance = strdup("default");
+ if (db->instance == NULL) {
+ ERROR("curl_xml plugin: strdup failed.");
+ sfree(db);
+ return -1;
+ }
+
+ db->xpath_list = llist_create();
+ if (db->xpath_list == NULL) {
+ ERROR("curl_xml plugin: list creation failed.");
+ sfree(db->instance);
+ sfree(db);
+ return -1;
}
db->timeout = -1;
- if (strcasecmp("URL", ci->key) == 0) {
- status = cf_util_get_string(ci, &db->url);
- if (status != 0) {
- sfree(db);
- return (status);
- }
- } else {
- ERROR("curl_xml plugin: cx_config: "
- "Invalid key: %s",
- ci->key);
- cx_free(db);
- return (-1);
+ int status = cf_util_get_string(ci, &db->url);
+ if (status != 0) {
+ llist_destroy(db->xpath_list);
+ sfree(db->instance);
+ sfree(db);
+ return status;
}
/* Fill the `cx_t' structure.. */
if (strcasecmp("Instance", child->key) == 0)
status = cf_util_get_string(child, &db->instance);
+ else if (strcasecmp("Plugin", child->key) == 0)
+ status = cf_util_get_string(child, &db->plugin_name);
else if (strcasecmp("Host", child->key) == 0)
status = cf_util_get_string(child, &db->host);
else if (strcasecmp("User", child->key) == 0)
break;
}
- if (status == 0) {
- if (db->list == NULL) {
- WARNING("curl_xml plugin: No (valid) `Key' block "
- "within `URL' block `%s'.",
- db->url);
- status = -1;
- }
- if (status == 0)
- status = cx_init_curl(db);
+ if (status != 0) {
+ cx_free(db);
+ return status;
}
- /* 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);
-
- user_data_t ud = {.data = db, .free_func = cx_free};
+ if (llist_size(db->xpath_list) == 0) {
+ WARNING("curl_xml plugin: No `xpath' block within `URL' block `%s'.",
+ db->url);
+ cx_free(db);
+ return -1;
+ }
- plugin_register_complex_read(/* group = */ "curl_xml", cb_name, cx_read,
- /* interval = */ 0, &ud);
- sfree(cb_name);
- } else {
+ if (cx_init_curl(db) != 0) {
cx_free(db);
- return (-1);
+ return -1;
}
- return (0);
+ /* If all went well, register this database for reading */
+ DEBUG("curl_xml plugin: Registering new read callback: %s", db->instance);
+
+ 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,
+ &(user_data_t){
+ .data = db, .free_func = cx_free,
+ });
+ sfree(cb_name);
+ return 0;
} /* }}} int cx_config_add_url */
/* }}} End of configuration handling functions */
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++;
if ((success == 0) && (errors > 0)) {
ERROR("curl_xml plugin: All statements failed.");
- return (-1);
+ return -1;
}
- return (0);
+ return 0;
} /* }}} int cx_config */
static int cx_init(void) /* {{{ */
/* Call this while collectd is still single-threaded to avoid
* initialization issues in libgcrypt. */
curl_global_init(CURL_GLOBAL_SSL);
- return (0);
+ return 0;
} /* }}} int cx_init */
void module_register(void) {
plugin_register_complex_config("curl_xml", cx_config);
plugin_register_init("curl_xml", cx_init);
} /* void module_register */
-
-/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff