function api_graph_tree_item_remove($graph_tree_item_id) {
require_once(CACTI_BASE_PATH . "/include/graph_tree/graph_tree_constants.php");
require_once(CACTI_BASE_PATH . "/lib/graph_tree/graph_tree_info.php");
require_once(CACTI_BASE_PATH . "/lib/graph_tree/graph_tree_utility.php");
/* sanity checks */
validate_id_die($graph_tree_item_id, "graph_tree_item_id");
/* obtain a copy of the current graph tree item */
$graph_tree_item = api_graph_tree_item_get($graph_tree_item_id);
/* find the id of the parent */
$parent_graph_tree_item_id = api_graph_tree_item_parent_get($graph_tree_item_id);
/* because deleting a parent branch deletes all of its children, it is very possible that
* the branch we are trying to delete has already been removed. */
if (!isset($graph_tree_item["id"])) {
return true;
}
/* if this item is a graph or host, it will have NO children, so we can just delete the
* item and exit. */
if (($graph_tree_item["item_type"] == TREE_ITEM_TYPE_GRAPH) || ($graph_tree_item["item_type"] == TREE_ITEM_TYPE_HOST)) {
return db_delete("graph_tree_items",
array(
"id" => array("type" => DB_TYPE_INTEGER, "value" => $graph_tree_item_id)
));
}
/* make sure nothing bad happens */
if (!api_graph_tree_item_order_key_validate($graph_tree_item["order_key"])) {
return false;
}
$graph_tree_items = api_graph_tree_item_list($graph_tree_item["graph_tree_id"], "", $graph_tree_item_id, true, true);
if (is_array($graph_tree_items) > 0) {
/* remove all child items */
foreach ($graph_tree_items as $_graph_tree_item) {
db_delete("graph_tree_items",
array(
"id" => array("type" => DB_TYPE_INTEGER, "value" => $_graph_tree_item["id"])
));
}
}
/* CLEANUP - reorder the tier that this branch lies in */
$base_order_key = substr($graph_tree_item["order_key"], 0, (CHARS_PER_TIER * (api_graph_tree_item_depth_get($graph_tree_item["order_key"]) - 1)));
/* refetch the graph tree item list now that the selected item has been removed */
$graph_tree_items = api_graph_tree_item_list($graph_tree_item["graph_tree_id"], "", $parent_graph_tree_item_id, true, true);
if ((is_array($graph_tree_items)) && (sizeof($graph_tree_items) > 0)) {
$old_key_part = substr($graph_tree_items[0]["order_key"], strlen($base_order_key), CHARS_PER_TIER);
/* we key tier==0 off of '1' and tier>0 off of '0' */
if (api_graph_tree_item_depth_get($base_order_key) == 0) {
$i = 1;
}else{
$i = 0;
}
foreach ($graph_tree_items as $_graph_tree_item) {
/* this is the key column we are going to 'rekey' */
$new_key_part = substr($_graph_tree_item["order_key"], strlen($base_order_key), CHARS_PER_TIER);
/* incriment a counter for the new key column */
if ($old_key_part != $new_key_part) {
$i++;
}
/* build the new order key string */
$key = $base_order_key . str_pad(strval($i), CHARS_PER_TIER, '0', STR_PAD_LEFT) . substr($_graph_tree_item["order_key"], (strlen($base_order_key) + CHARS_PER_TIER));
db_update("graph_tree_items",
array(
"order_key" => array("type" => DB_TYPE_STRING, "value" => $key),
"id" => array("type" => DB_TYPE_INTEGER, "value" => $_graph_tree_item["id"])
),
array("id"));
$old_key_part = $new_key_part;
}
}
}
function api_graph_tree_item_available_order_key_get($graph_tree_id, $order_key) {
/* sanity checks */
validate_id_die($graph_tree_id, "graph_tree_id");
if (($order_key != "") && (!api_graph_tree_item_order_key_validate($order_key))) {
die("Invalid order key '$order_key'");
}
if (preg_match("/^" . str_repeat('0', CHARS_PER_TIER) . "/", $order_key)) {
$tier = 0;
$parent_root = '';
}else{
$tier = api_graph_tree_item_depth_get($order_key);
$parent_root = substr($order_key, 0, ($tier * CHARS_PER_TIER));
}
$order_key = db_fetch_cell("SELECT order_key FROM graph_tree_items WHERE graph_tree_id = $graph_tree_id AND order_key LIKE '$parent_root%' ORDER BY order_key DESC LIMIT 1");
$complete_root = substr($order_key, 0, ($tier * CHARS_PER_TIER) + CHARS_PER_TIER);
$order_key_suffix = (substr($complete_root, - CHARS_PER_TIER) + 1);
$order_key_suffix = str_pad($order_key_suffix, CHARS_PER_TIER, '0', STR_PAD_LEFT);
$order_key_suffix = str_pad($parent_root . $order_key_suffix, (MAX_TREE_DEPTH * CHARS_PER_TIER), '0', STR_PAD_RIGHT);
return $order_key_suffix;
}
