/**
* Create a custom search index for the messages table.
*
* What it does:
* - Called by ?action=admin;area=managesearch;sa=createmsgindex.
* - Linked from the action_edit screen.
* - Requires the admin_forum permission.
* - Depending on the size of the message table, the process is divided in steps.
*
* @uses ManageSearch template, 'create_index', 'create_index_progress', and 'create_index_done'
* sub-templates.
*/
public function action_create()
{
global $modSettings, $context, $txt, $db_show_debug;
// Scotty, we need more time...
@set_time_limit(600);
if (function_exists('apache_reset_timeout')) {
@apache_reset_timeout();
}
$context[$context['admin_menu_name']]['current_subsection'] = 'method';
$context['page_title'] = $txt['search_index_custom'];
$messages_per_batch = 50;
$index_properties = array(2 => array('column_definition' => 'small', 'step_size' => 1000000), 4 => array('column_definition' => 'medium', 'step_size' => 1000000, 'max_size' => 16777215), 5 => array('column_definition' => 'large', 'step_size' => 100000000, 'max_size' => 2000000000));
// Resume building an index that was not completed
if (isset($_REQUEST['resume']) && !empty($modSettings['search_custom_index_resume'])) {
$context['index_settings'] = unserialize($modSettings['search_custom_index_resume']);
$context['start'] = (int) $context['index_settings']['resume_at'];
unset($context['index_settings']['resume_at']);
$context['step'] = 1;
} else {
$context['index_settings'] = array('bytes_per_word' => isset($_REQUEST['bytes_per_word']) && isset($index_properties[$_REQUEST['bytes_per_word']]) ? (int) $_REQUEST['bytes_per_word'] : 2);
$context['start'] = isset($_REQUEST['start']) ? (int) $_REQUEST['start'] : 0;
$context['step'] = isset($_REQUEST['step']) ? (int) $_REQUEST['step'] : 0;
// Admin timeouts are painful when building these long indexes
if ($_SESSION['admin_time'] + 3300 < time() && $context['step'] >= 1) {
$_SESSION['admin_time'] = time();
}
}
if ($context['step'] !== 0) {
checkSession('request');
}
// Step 0: let the user determine how they like their index.
if ($context['step'] === 0) {
$context['sub_template'] = 'create_index';
}
require_once SUBSDIR . '/ManageSearch.subs.php';
// Logging may cause session issues with many queries
$old_db_show_debug = $db_show_debug;
$db_show_debug = false;
// Step 1: insert all the words.
if ($context['step'] === 1) {
$context['sub_template'] = 'create_index_progress';
list($context['start'], $context['step'], $context['percentage']) = createSearchIndex($context['start'], $messages_per_batch, $index_properties[$context['index_settings']['bytes_per_word']]['column_definition'], $context['index_settings']);
} elseif ($context['step'] === 2) {
if ($context['index_settings']['bytes_per_word'] < 4) {
$context['step'] = 3;
} else {
list($context['start'], $complete) = removeCommonWordsFromIndex($context['start'], $index_properties[$context['index_settings']['bytes_per_word']]);
if ($complete) {
$context['step'] = 3;
}
$context['sub_template'] = 'create_index_progress';
$context['percentage'] = 80 + round($context['start'] / $index_properties[$context['index_settings']['bytes_per_word']]['max_size'], 3) * 20;
}
}
// Restore previous debug state
$db_show_debug = $old_db_show_debug;
// Step 3: everything done.
if ($context['step'] === 3) {
$context['sub_template'] = 'create_index_done';
updateSettings(array('search_index' => 'custom', 'search_custom_index_config' => serialize($context['index_settings'])));
removeSettings('search_custom_index_resume');
}
}
/**
* Rebuild the search index
*/
public static function ext_rebuildSearchIndex()
{
global $output, $PIVOTX;
$PIVOTX['session']->minLevel(PIVOTX_UL_NORMAL);
$output = "";
// initialise the threshold.. Initially it's set to 10 * the rebuild_threshold,
// roughly assuming we index 10 entries per second.
if ($PIVOTX['config']->get('rebuild_threshold') > 4) {
$chunksize = 10 * $PIVOTX['config']->get('rebuild_threshold');
} else {
$chunksize = 100;
}
@set_time_limit(0);
include_once "modules/module_search.php";
$start = isset($_POST['start']) ? $_POST['start'] : 0;
$time = isset($_POST['time']) ? $_POST['time'] : 0;
$stop = $start + $chunksize;
if ($start == 0) {
$PIVOTX['db']->clearIndex('search');
}
$continue = createSearchIndex($start, $stop, $time);
writeSearchIndex(FALSE);
$time += timeTaken('int');
$result = array();
$result['func'] = 'rebuildSearchIndex';
$result['start'] = $stop;
$result['time'] = $time;
if ($continue) {
$result['done'] = false;
} else {
$result['done'] = true;
$status = sprintf(__('Finished! Generating index for %s entries took %s seconds '), $PIVOTX['db']->get_entries_count(), $time);
$output .= sprintf("<br />\n<b>%s</b><br />\n", $status);
}
$result['text'] = $output;
echo json_encode($result);
}
