function wp_cron_preload_cache()
{
global $wpdb, $wp_cache_preload_interval, $wp_cache_preload_posts, $wp_cache_preload_email_me, $wp_cache_preload_email_volume, $cache_path;
if (get_option('preload_cache_stop')) {
delete_option('preload_cache_stop');
return true;
}
$mutex = $cache_path . "preload_mutex.tmp";
sleep(3 + mt_rand(1, 5));
if (@file_exists($mutex)) {
if (@filemtime($mutex) > time() - 600) {
return true;
} else {
@unlink($mutex);
}
}
$fp = @fopen($mutex, 'w');
@fclose($fp);
$counter = get_option('preload_cache_counter');
if (is_array($counter) == false) {
$counter = array('c' => 0, 't' => time());
update_option('preload_cache_counter', $counter);
}
$c = $counter['c'];
if ($wp_cache_preload_email_me && $c == 0) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Started', 'wp-super-cache'), site_url(), ''), ' ');
}
$taxonomies = apply_filters('wp_cache_preload_taxonomies', array('post_tag' => 'tag', 'category' => 'category'));
$finished = false;
$permalink_counter_msg = $cache_path . "preload_permalink.txt";
foreach ($taxonomies as $taxonomy => $path) {
$taxonomy_filename = $cache_path . "taxonomy_" . $taxonomy . ".txt";
if ($c == 0) {
@unlink($taxonomy_filename);
}
if (false == @file_exists($taxonomy_filename)) {
$out = '';
$records = get_terms($taxonomy);
foreach ($records as $term) {
$out .= site_url($path . "/" . $term->slug . "/") . "\n";
}
$fp = fopen($taxonomy_filename, 'w');
if ($fp) {
fwrite($fp, $out);
fclose($fp);
}
$details = explode("\n", $out);
} else {
$details = explode("\n", file_get_contents($taxonomy_filename));
}
if (count($details) != 1 && $details[0] != '') {
$rows = array_splice($details, 0, 50);
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume == 'many') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Refreshing %2$s taxonomy from %3$d to %4$d', 'wp-super-cache'), site_url(), $taxonomy, $c, $c + 100), 'Refreshing: ' . print_r($rows, 1));
}
foreach ((array) $rows as $url) {
set_time_limit(60);
if ($url == '') {
continue;
}
$url_info = parse_url($url);
$dir = get_supercache_dir() . $url_info['path'];
prune_super_cache($dir);
$fp = @fopen($permalink_counter_msg, 'w');
if ($fp) {
@fwrite($fp, "{$taxonomy}: {$url}");
@fclose($fp);
}
wp_remote_get($url, array('timeout' => 60, 'blocking' => true));
sleep(1);
}
$fp = fopen($taxonomy_filename, 'w');
if ($fp) {
fwrite($fp, implode("\n", $details));
fclose($fp);
}
}
}
if ($wp_cache_preload_posts == 'all' || $c <= $wp_cache_preload_posts) {
$posts = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} WHERE ( post_type != 'revision' AND post_type != 'nav_menu_item' ) AND post_status = 'publish' ORDER BY post_date DESC LIMIT {$c}, 100");
} else {
$posts = false;
}
if (!isset($wp_cache_preload_email_volume)) {
$wp_cache_preload_email_volume = 'medium';
}
update_option('preload_cache_counter', array('c' => $c + 100, 't' => time()));
if ($posts) {
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume == 'many') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Refreshing posts from %2$d to %3$d', 'wp-super-cache'), site_url(), $c, $c + 100), ' ');
}
$msg = '';
$count = $c + 1;
$permalink_counter_msg = $cache_path . "preload_permalink.txt";
foreach ($posts as $post_id) {
set_time_limit(60);
clear_post_supercache($post_id);
$url = get_permalink($post_id);
$fp = @fopen($permalink_counter_msg, 'w');
if ($fp) {
@fwrite($fp, $count . " " . $url);
@fclose($fp);
}
if (@file_exists($cache_path . "stop_preload.txt")) {
@unlink($mutex);
@unlink($cache_path . "stop_preload.txt");
update_option('preload_cache_counter', array('c' => 0, 't' => time()));
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Stopped', 'wp-super-cache'), site_url(), ''), ' ');
}
return true;
}
$msg .= "{$url}\n";
wp_remote_get($url, array('timeout' => 60, 'blocking' => true));
sleep(1);
$count++;
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume != 'less') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] %2$d posts refreshed', 'wp-super-cache'), $_SERVER['HTTP_HOST'], $c + 100), __("Refreshed the following posts:", 'wp-super-cache') . "\n{$msg}");
}
if (defined('DOING_CRON')) {
wp_schedule_single_event(time() + 30, 'wp_cache_preload_hook');
}
} else {
$msg = '';
update_option('preload_cache_counter', array('c' => 0, 't' => time()));
if ((int) $wp_cache_preload_interval && defined('DOING_CRON')) {
if ($wp_cache_preload_email_me) {
$msg = sprintf(__('Scheduling next preload refresh in %d minutes.', 'wp-super-cache'), (int) $wp_cache_preload_interval);
}
wp_schedule_single_event(time() + (int) $wp_cache_preload_interval * 60, 'wp_cache_full_preload_hook');
}
global $file_prefix, $cache_max_time;
if ($wp_cache_preload_interval > 0) {
$cache_max_time = (int) $wp_cache_preload_interval * 60;
// fool the GC into expiring really old files
} else {
$cache_max_time = 86400;
// fool the GC into expiring really old files
}
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%s] Cache Preload Completed', 'wp-super-cache'), site_url()), __("Cleaning up old supercache files.", 'wp-super-cache') . "\n" . $msg);
}
wp_cache_phase2_clean_expired($file_prefix, true);
// force cleanup of old files.
}
@unlink($mutex);
}
function wp_cron_preload_cache()
{
global $wpdb, $wp_cache_preload_interval, $wp_cache_preload_posts, $wp_cache_preload_email_me, $wp_cache_preload_email_volume, $cache_path, $wp_cache_preload_taxonomies;
if (get_option('preload_cache_stop')) {
delete_option('preload_cache_stop');
wp_cache_debug("wp_cron_preload_cache: preload cancelled", 1);
return true;
}
$mutex = $cache_path . "preload_mutex.tmp";
sleep(3 + mt_rand(1, 5));
if (@file_exists($mutex)) {
if (@filemtime($mutex) > time() - 600) {
wp_cache_debug("wp_cron_preload_cache: preload mutex found and less than 600 seconds old. Aborting preload.", 1);
return true;
} else {
wp_cache_debug("wp_cron_preload_cache: old preload mutex found and deleted. Preload continues.", 1);
@unlink($mutex);
}
}
$fp = @fopen($mutex, 'w');
@fclose($fp);
$counter = get_option('preload_cache_counter');
if (is_array($counter) == false) {
wp_cache_debug("wp_cron_preload_cache: setting up preload for the first time!", 5);
$counter = array('c' => 0, 't' => time());
update_option('preload_cache_counter', $counter);
}
$c = $counter['c'];
update_option('preload_cache_counter', array('c' => $c + 100, 't' => time()));
if ($wp_cache_preload_email_me && $c == 0) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Started', 'wp-super-cache'), home_url(), ''), ' ');
}
if ($wp_cache_preload_posts == 'all' || $c < $wp_cache_preload_posts) {
wp_cache_debug("wp_cron_preload_cache: doing taxonomy preload.", 5);
$permalink_counter_msg = $cache_path . "preload_permalink.txt";
if (isset($wp_cache_preload_taxonomies) && $wp_cache_preload_taxonomies) {
$taxonomies = apply_filters('wp_cache_preload_taxonomies', array('post_tag' => 'tag', 'category' => 'category'));
foreach ($taxonomies as $taxonomy => $path) {
$taxonomy_filename = $cache_path . "taxonomy_" . $taxonomy . ".txt";
if ($c == 0) {
@unlink($taxonomy_filename);
}
if (false == @file_exists($taxonomy_filename)) {
$out = '';
$records = get_terms($taxonomy);
foreach ($records as $term) {
$out .= get_term_link($term) . "\n";
}
$fp = fopen($taxonomy_filename, 'w');
if ($fp) {
fwrite($fp, $out);
fclose($fp);
}
$details = explode("\n", $out);
} else {
$details = explode("\n", file_get_contents($taxonomy_filename));
}
if (count($details) != 1 && $details[0] != '') {
$rows = array_splice($details, 0, 50);
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume == 'many') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Refreshing %2$s taxonomy from %3$d to %4$d', 'wp-super-cache'), home_url(), $taxonomy, $c, $c + 100), 'Refreshing: ' . print_r($rows, 1));
}
foreach ((array) $rows as $url) {
set_time_limit(60);
if ($url == '') {
continue;
}
$url_info = parse_url($url);
$dir = get_supercache_dir() . $url_info['path'];
wp_cache_debug("wp_cron_preload_cache: delete {$dir}", 5);
prune_super_cache($dir);
$fp = @fopen($permalink_counter_msg, 'w');
if ($fp) {
@fwrite($fp, "{$taxonomy}: {$url}");
@fclose($fp);
}
wp_remote_get($url, array('timeout' => 60, 'blocking' => true));
wp_cache_debug("wp_cron_preload_cache: fetched {$url}", 5);
sleep(1);
}
$fp = fopen($taxonomy_filename, 'w');
if ($fp) {
fwrite($fp, implode("\n", $details));
fclose($fp);
}
}
}
}
}
if ($wp_cache_preload_posts == 'all' || $c < $wp_cache_preload_posts) {
$types = get_post_types(array('public' => true, 'publicly_queryable' => true), 'names', 'or');
$types = array_map('esc_sql', $types);
$types = "'" . implode("','", $types) . "'";
$posts = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} WHERE ( post_type IN ( {$types} ) ) AND post_status = 'publish' ORDER BY ID ASC LIMIT {$c}, 100");
wp_cache_debug("wp_cron_preload_cache: got 100 posts from position {$c}.", 5);
} else {
wp_cache_debug("wp_cron_preload_cache: no more posts to get. Limit ({$wp_cache_preload_posts}) reached.", 5);
$posts = false;
}
if (!isset($wp_cache_preload_email_volume)) {
$wp_cache_preload_email_volume = 'medium';
}
if ($posts) {
if (get_option('show_on_front') == 'page') {
$page_on_front = get_option('page_on_front');
$page_for_posts = get_option('page_for_posts');
} else {
$page_on_front = $page_for_posts = 0;
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume == 'many') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Refreshing posts from %2$d to %3$d', 'wp-super-cache'), home_url(), $c, $c + 100), ' ');
}
$msg = '';
$count = $c + 1;
$permalink_counter_msg = $cache_path . "preload_permalink.txt";
foreach ($posts as $post_id) {
set_time_limit(60);
if ($page_on_front != 0 && ($post_id == $page_on_front || $post_id == $page_for_posts)) {
continue;
}
clear_post_supercache($post_id);
$url = get_permalink($post_id);
$fp = @fopen($permalink_counter_msg, 'w');
if ($fp) {
@fwrite($fp, $count . " " . $url);
@fclose($fp);
}
if (@file_exists($cache_path . "stop_preload.txt")) {
wp_cache_debug("wp_cron_preload_cache: cancelling preload. stop_preload.txt found.", 5);
@unlink($mutex);
@unlink($cache_path . "stop_preload.txt");
update_option('preload_cache_counter', array('c' => 0, 't' => time()));
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Stopped', 'wp-super-cache'), home_url(), ''), ' ');
}
return true;
}
$msg .= "{$url}\n";
wp_remote_get($url, array('timeout' => 60, 'blocking' => true));
wp_cache_debug("wp_cron_preload_cache: fetched {$url}", 5);
sleep(1);
$count++;
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume != 'less') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] %2$d posts refreshed', 'wp-super-cache'), home_url(), $c + 100), __("Refreshed the following posts:", 'wp-super-cache') . "\n{$msg}");
}
if (defined('DOING_CRON')) {
wp_cache_debug("wp_cron_preload_cache: scheduling the next preload in 30 seconds.", 5);
wp_schedule_single_event(time() + 30, 'wp_cache_preload_hook');
}
} else {
$msg = '';
update_option('preload_cache_counter', array('c' => 0, 't' => time()));
if ((int) $wp_cache_preload_interval && defined('DOING_CRON')) {
if ($wp_cache_preload_email_me) {
$msg = sprintf(__('Scheduling next preload refresh in %d minutes.', 'wp-super-cache'), (int) $wp_cache_preload_interval);
}
wp_cache_debug("wp_cron_preload_cache: no more posts. scheduling next preload in {$wp_cache_preload_interval} minutes.", 5);
wp_schedule_single_event(time() + (int) $wp_cache_preload_interval * 60, 'wp_cache_full_preload_hook');
}
global $file_prefix, $cache_max_time;
if ($wp_cache_preload_interval > 0) {
$cache_max_time = (int) $wp_cache_preload_interval * 60;
// fool the GC into expiring really old files
} else {
$cache_max_time = 86400;
// fool the GC into expiring really old files
}
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%s] Cache Preload Completed', 'wp-super-cache'), home_url()), __("Cleaning up old supercache files.", 'wp-super-cache') . "\n" . $msg);
}
wp_cache_debug("wp_cron_preload_cache: clean expired cache files older than {$cache_max_time} seconds.", 5);
wp_cache_phase2_clean_expired($file_prefix, true);
// force cleanup of old files.
}
@unlink($mutex);
}
function wp_cron_preload_cache()
{
global $wpdb, $wp_cache_preload_interval, $wp_cache_preload_posts, $wp_cache_preload_email_me, $wp_cache_preload_email_volume;
if (get_option('preload_cache_stop')) {
delete_option('preload_cache_stop');
return true;
}
$c = (int) get_option('preload_cache_counter');
if ($wp_cache_preload_posts == 'all' || $c <= $wp_cache_preload_posts) {
$posts = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} WHERE post_status = 'publish' ORDER BY post_date DESC LIMIT {$c}, 100");
} else {
$posts = false;
}
if (!isset($wp_cache_preload_email_volume)) {
$wp_cache_preload_email_volume = 'medium';
}
update_option('preload_cache_counter', $c + 100);
if ($posts) {
if ($wp_cache_preload_email_me && $c == 0) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Started', 'wp-super-cache'), site_url(), ''), '');
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume == 'many') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Refreshing posts from %2$d to %3$d', 'wp-super-cache'), site_url(), $c, $c + 100), '');
}
$msg = '';
$count = $c + 1;
foreach ($posts as $post_id) {
clear_post_supercache($post_id);
$url = get_permalink($post_id);
$msg .= "{$url}\n";
wp_remote_get($url, array('timeout' => 60, 'blocking' => true));
$count++;
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume != 'less') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] %2$d posts refreshed', 'wp-super-cache'), $_SERVER['HTTP_HOST'], $c + 100), __("Refreshed the following posts:", 'wp-super-cache') . "\n{$msg}");
}
if (defined('DOING_CRON')) {
wp_schedule_single_event(time() + 30, 'wp_cache_preload_hook');
}
} else {
$msg = '';
update_option('preload_cache_counter', 0);
if ((int) $wp_cache_preload_interval && defined('DOING_CRON')) {
if ($wp_cache_preload_email_me) {
$msg = sprintf(__('Scheduling next preload refresh in %d minutes.', 'wp-super-cache'), (int) $wp_cache_preload_interval);
}
wp_schedule_single_event(time() + (int) $wp_cache_preload_interval * 60, 'wp_cache_full_preload_hook');
}
global $file_prefix, $cache_max_time;
if ($wp_cache_preload_interval > 0) {
$cache_max_time = (int) $wp_cache_preload_interval * 60;
// fool the GC into expiring really old files
} else {
$cache_max_time = 86400;
// fool the GC into expiring really old files
}
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%s] Cache Preload Completed', 'wp-super-cache'), site_url()), __("Cleaning up old supercache files.", 'wp-super-cache') . "\n" . $msg);
}
wp_cache_phase2_clean_expired($file_prefix, true);
// force cleanup of old files.
}
}
function wp_cron_preload_cache()
{
global $wpdb, $wp_cache_preload_interval, $wp_cache_preload_posts, $wp_cache_preload_email_me, $wp_cache_preload_email_volume, $cache_path;
if (get_option('preload_cache_stop')) {
delete_option('preload_cache_stop');
return true;
}
$mutex = $cache_path . "preload_mutex.tmp";
sleep(3 + mt_rand(1, 5));
if (@file_exists($mutex)) {
if (@filemtime($mutex) > time() - 600) {
return true;
} else {
@unlink($mutex);
}
}
$fp = @fopen($mutex, 'w');
@fclose($fp);
$counter = get_option('preload_cache_counter');
$c = $counter['c'];
if ($wp_cache_preload_posts == 'all' || $c <= $wp_cache_preload_posts) {
$posts = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} WHERE (post_type = 'post' OR post_type='page') AND post_status = 'publish' ORDER BY post_date DESC LIMIT {$c}, 100");
} else {
$posts = false;
}
if (!isset($wp_cache_preload_email_volume)) {
$wp_cache_preload_email_volume = 'medium';
}
update_option('preload_cache_counter', array('c' => $c + 100, 't' => time()));
if ($posts) {
if ($wp_cache_preload_email_me && $c == 0) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Started', 'wp-super-cache'), site_url(), ''), '');
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume == 'many') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Refreshing posts from %2$d to %3$d', 'wp-super-cache'), site_url(), $c, $c + 100), '');
}
$msg = '';
$count = $c + 1;
$permalink_counter_msg = $cache_path . "preload_permalink.txt";
foreach ($posts as $post_id) {
set_time_limit(60);
clear_post_supercache($post_id);
$url = get_permalink($post_id);
$fp = @fopen($permalink_counter_msg, 'w');
if ($fp) {
@fwrite($fp, $count . " " . $url);
@fclose($fp);
}
if (@file_exists($cache_path . "stop_preload.txt")) {
@unlink($mutex);
@unlink($cache_path . "stop_preload.txt");
update_option('preload_cache_counter', array('c' => 0, 't' => time()));
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] Cache Preload Stopped', 'wp-super-cache'), site_url(), ''), '');
}
return true;
}
$msg .= "{$url}\n";
wp_remote_get($url, array('timeout' => 60, 'blocking' => true));
sleep(1);
$count++;
}
if ($wp_cache_preload_email_me && $wp_cache_preload_email_volume != 'less') {
wp_mail(get_option('admin_email'), sprintf(__('[%1$s] %2$d posts refreshed', 'wp-super-cache'), $_SERVER['HTTP_HOST'], $c + 100), __("Refreshed the following posts:", 'wp-super-cache') . "\n{$msg}");
}
if (defined('DOING_CRON')) {
wp_schedule_single_event(time() + 30, 'wp_cache_preload_hook');
}
} else {
$msg = '';
update_option('preload_cache_counter', array('c' => 0, 't' => time()));
if ((int) $wp_cache_preload_interval && defined('DOING_CRON')) {
if ($wp_cache_preload_email_me) {
$msg = sprintf(__('Scheduling next preload refresh in %d minutes.', 'wp-super-cache'), (int) $wp_cache_preload_interval);
}
wp_schedule_single_event(time() + (int) $wp_cache_preload_interval * 60, 'wp_cache_full_preload_hook');
}
global $file_prefix, $cache_max_time;
if ($wp_cache_preload_interval > 0) {
$cache_max_time = (int) $wp_cache_preload_interval * 60;
// fool the GC into expiring really old files
} else {
$cache_max_time = 86400;
// fool the GC into expiring really old files
}
if ($wp_cache_preload_email_me) {
wp_mail(get_option('admin_email'), sprintf(__('[%s] Cache Preload Completed', 'wp-super-cache'), site_url()), __("Cleaning up old supercache files.", 'wp-super-cache') . "\n" . $msg);
}
wp_cache_phase2_clean_expired($file_prefix, true);
// force cleanup of old files.
}
@unlink($mutex);
}
