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<?php
/**
* File: ObjectCache_Plugin_Admin.php
*
* @package W3TC
*/
namespace W3TC;
/**
* Class ObjectCache_Plugin_Admin
*/
class ObjectCache_Plugin_Admin {
/**
* Registers necessary filters and actions.
*
* @return void
*/
public function run() {
add_filter( 'w3tc_save_options', array( $this, 'w3tc_save_options' ) );
$config_labels = new ObjectCache_ConfigLabels();
add_filter( 'w3tc_config_labels', array( $config_labels, 'config_labels' ) );
$c = Dispatcher::config();
if ( $c->getf_boolean( 'objectcache.enabled' ) ) {
add_filter( 'w3tc_errors', array( $this, 'w3tc_errors' ) );
add_filter( 'w3tc_notes', array( $this, 'w3tc_notes' ) );
add_filter( 'w3tc_usage_statistics_summary_from_history', array( $this, 'w3tc_usage_statistics_summary_from_history' ), 10, 2 );
}
add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
add_action( 'w3tc_ajax_objectcache_diskpopup', array( $this, 'w3tc_ajax_objectcache_diskpopup' ) );
}
/**
* Handles saving of options, scheduling or clearing cron events for object cache.
*
* @param array $data Associative array containing 'new_config' and 'old_config' values.
*
* @return array Modified data array with options.
*/
public function w3tc_save_options( $data ) {
$new_config = $data['new_config'];
$old_config = $data['old_config'];
// Schedule purge if enabled.
if ( $new_config->get_boolean( 'objectcache.enabled' ) && $new_config->get_boolean( 'objectcache.wp_cron' ) ) {
$new_wp_cron_time = $new_config->get_integer( 'objectcache.wp_cron_time' );
$old_wp_cron_time = $old_config ? $old_config->get_integer( 'objectcache.wp_cron_time' ) : -1;
$new_wp_cron_interval = $new_config->get_string( 'objectcache.wp_cron_interval' );
$old_wp_cron_interval = $old_config ? $old_config->get_string( 'objectcache.wp_cron_interval' ) : -1;
$schedule_needs_update = $new_wp_cron_time !== $old_wp_cron_time || $new_wp_cron_interval !== $old_wp_cron_interval;
// Clear the scheduled hook if a change in time or interval is detected.
if ( wp_next_scheduled( 'w3tc_objectcache_purge_wpcron' ) && $schedule_needs_update ) {
wp_clear_scheduled_hook( 'w3tc_objectcache_purge_wpcron' );
}
// Schedule if no existing cron event or settings have changed.
if ( ! wp_next_scheduled( 'w3tc_objectcache_purge_wpcron' ) || $schedule_needs_update ) {
$scheduled_timestamp_server = Util_Environment::get_cron_schedule_time( $new_wp_cron_time );
wp_schedule_event( $scheduled_timestamp_server, $new_wp_cron_interval, 'w3tc_objectcache_purge_wpcron' );
}
} elseif ( wp_next_scheduled( 'w3tc_objectcache_purge_wpcron' ) ) {
wp_clear_scheduled_hook( 'w3tc_objectcache_purge_wpcron' );
}
return $data;
}
/**
* Checks and adds errors related to the memcached configuration.
*
* @param array $errors Existing errors to be modified or added to.
*
* @return array Modified errors array.
*/
public function w3tc_errors( $errors ) {
$c = Dispatcher::config();
if ( 'memcached' === $c->get_string( 'objectcache.engine' ) ) {
$memcached_servers = $c->get_array( 'objectcache.memcached.servers' );
$memcached_binary_protocol = $c->get_boolean( 'objectcache.memcached.binary_protocol' );
$memcached_username = $c->get_string( 'objectcache.memcached.username' );
$memcached_password = $c->get_string( 'objectcache.memcached.password' );
if (
! Util_Installed::is_memcache_available(
$memcached_servers,
$memcached_binary_protocol,
$memcached_username,
$memcached_password
)
) {
if ( ! isset( $errors['memcache_not_responding.details'] ) ) {
$errors['memcache_not_responding.details'] = array();
}
$errors['memcache_not_responding.details'][] = sprintf(
// Translators: 1 memecached servers.
__(
'Object Cache: %1$s.',
'w3-total-cache'
),
implode( ', ', $memcached_servers )
);
}
}
return $errors;
}
/**
* Adds notes related to object cache state and actions needed.
*
* @param array $notes Existing notes to be modified or added to.
*
* @return array Modified notes array.
*/
public function w3tc_notes( $notes ) {
$c = Dispatcher::config();
$state = Dispatcher::config_state();
$state_note = Dispatcher::config_state_note();
// Show notification when object cache needs to be emptied.
if (
$state_note->get( 'objectcache.show_note.flush_needed' ) &&
! is_network_admin() && // flushed dont work under network admin.
! $c->is_preview()
) {
$notes['objectcache_flush_needed'] = sprintf(
// Translators: 1 object cache flush button.
__(
'The setting change(s) made either invalidate the cached data or modify the behavior of the site. %1$s now to provide a consistent user experience.',
'w3-total-cache'
),
Util_Ui::button_link(
__( 'Empty the object cache', 'w3-total-cache' ),
Util_Ui::url( array( 'w3tc_flush_objectcache' => 'y' ) )
)
);
}
return $notes;
}
/**
* Summarizes usage statistics for object cache from history data.
*
* @param array $summary Current summary of usage statistics.
* @param array $history Array containing historical usage data.
*
* @return array Modified summary with object cache usage data.
*/
public function w3tc_usage_statistics_summary_from_history( $summary, $history ) {
// counters.
$get_total = Util_UsageStatistics::sum( $history, 'objectcache_get_total' );
$get_hits = Util_UsageStatistics::sum( $history, 'objectcache_get_hits' );
$sets = Util_UsageStatistics::sum( $history, 'objectcache_sets' );
$c = Dispatcher::config();
$e = $c->get_string( 'objectcache.engine' );
$summary['objectcache'] = array(
'get_total' => Util_UsageStatistics::integer( $get_total ),
'get_hits' => Util_UsageStatistics::integer( $get_hits ),
'sets' => Util_UsageStatistics::integer( $sets ),
'flushes' => Util_UsageStatistics::integer( Util_UsageStatistics::sum( $history, 'objectcache_flushes' ) ),
'time_ms' => Util_UsageStatistics::integer( Util_UsageStatistics::sum( $history, 'objectcache_time_ms' ) ),
'calls_per_second' => Util_UsageStatistics::value_per_period_seconds( $get_total + $sets, $summary ),
'hit_rate' => Util_UsageStatistics::percent( $get_hits, $get_total ),
'engine_name' => Cache::engine_name( $e ),
);
return $summary;
}
/**
* Enqueue disk usage risk acceptance script.
*
* @since 2.8.6
*
* @return void
*/
public function admin_enqueue_scripts() {
$page_val = Util_Request::get_string( 'page' );
if ( 'w3tc_general' === $page_val ) {
wp_enqueue_script(
'w3tc-objectcache-diskpopup',
plugins_url( 'ObjectCache_DiskPopup.js', W3TC_FILE ),
array(),
W3TC_VERSION,
false
);
}
}
/**
* Popup modal for Object Cache disk usage risk acceptance.
*
* @since 2.8.6
*
* @return void
*/
public function w3tc_ajax_objectcache_diskpopup() {
include W3TC_DIR . '/ObjectCache_DiskPopup_View.php';
}
}