<?php
/**
* Purge using AmazonSNS object
*/
w3_require_once(W3TC_LIB_W3_DIR . '/Enterprise/SnsBase.php');
/**
* Class W3_Sns
*/
class W3_Enterprise_SnsClient extends W3_Enterprise_SnsBase {
private $messages = array();
private $messages_by_signature = array();
private $send_action_configured = false;
/**
* Sends subscription request
*/
function subscribe($url, $topic_arn) {
$this->_log('Sending subscription to ' . $topic_arn . ' ' . $url);
$response = $this->_get_api()->subscribe($topic_arn, 'http', $url);
if (!$response->isOK())
throw new Exception('Subscription failed');
}
/**
* Flushes DB caches
*
*/
function dbcache_flush() {
$this->_prepare_message(array('action' => 'dbcache_flush'));
}
/**
* Flushes minify caches
*
*/
function minifycache_flush() {
$this->_prepare_message(array('action' => 'minifycache_flush'));
}
/**
* Flushes object caches
*
*/
function objectcache_flush() {
$this->_prepare_message(array('action' => 'objectcache_flush'));
}
/**
* Flushes fragment caches
*
*/
function fragmentcache_flush() {
$this->_prepare_message(array('action' => 'fragmentcache_flush'));
}
/**
* Flushes fragment cache based on group
*
*/
function fragmentcache_flush_group($group, $global = false) {
$this->_prepare_message(array('action' => 'fragmentcache_flush_group', 'group' => $group, 'global' => $global));
}
/**
* Flushes query string
*
*/
function browsercache_flush() {
$this->_prepare_message(array('action' => 'browsercache_flush'));
}
/**
* Purges Files from Varnish (If enabled) and CDN
*
*/
function cdn_purge_files($purgefiles) {
$this->_prepare_message(array('action' => 'cdn_purge_files', 'purgefiles' => $purgefiles));
}
/**
* Flushes all caches
* @return boolean
*/
function pgcache_flush() {
return $this->_prepare_message(array('action' => 'pgcache_flush'));
}
/**
* Flushes post cache
*
* @param integer $post_id
* @return boolean
*/
function pgcache_flush_post($post_id) {
return $this->_prepare_message(
array('action' => 'pgcache_flush_post', 'post_id' => $post_id));
}
/**
* Flushes post cache
*
* @param string $url
* @return boolean
*/
function pgcache_flush_url($url) {
return $this->_prepare_message(
array('action' => 'pgcache_flush_url', 'url' => $url));
}
/**
* Performs garbage collection on the pgcache
*/
function pgcache_cleanup() {
$this->_prepare_message(array('action' => 'pgcache_cleanup'));
}
/**
* Purges post from varnish cache
* @param $post_id
* @return mixed
*/
function varnish_flush_post($post_id) {
return $this->_prepare_message(array('action' => 'varnish_flush_post', 'post_id' => $post_id));
}
/**
* Purges url from varnish cache
* @param string $url
* @return mixed
*/
function varnish_flush_url($url) {
return $this->_prepare_message(array('action' => 'varnish_flush_url', 'url' => $url));
}
/**
* Purges varnish cache
* @return mixed
* @return boolean
*/
function varnish_flush() {
return $this->_prepare_message(array('action' => 'varnish_flush'));
}
/**
* Purges post from CDN cache
* @param $post_id
* @return boolean
*/
function cdncache_purge_post($post_id) {
return $this->_prepare_message(array('action' => 'cdncache_purge_post', 'post_id' => $post_id));
}
/**
* Purge CDN cache
*/
function cdncache_purge() {
return $this->_prepare_message(array('action' => 'cdncache_purge'));
}
/**
* Purges post from CDN cache
* @param $url
* @return boolean
*/
function cdncache_purge_url($url) {
return $this->_prepare_message(array('action' => 'cdncache_purge_url', 'url' => $url));
}
/**
* Flushes the system APC
* @return bool
*/
function apc_system_flush() {
$this->_prepare_message(array('action' => 'apc_system_flush'));
}
/**
* Reloads/compiles a PHP file.
* @param string $filename
* @return mixed
*/
function apc_reload_file($filename) {
return $this->_prepare_message(array('action' => 'apc_reload_file', 'filename' => $filename));
}
/**
* Reloads/compiles a PHP file.
* @param string[] $filenames
* @return mixed
*/
function apc_reload_files($filenames) {
return $this->_prepare_message(array('action' => 'apc_reload_files', 'filenames' => $filenames));
}
/**
* Deletes files based on regular expression matching.
* @param string $mask
* @return mixed
*/
function apc_delete_files_based_on_regex($mask) {
return $this->_prepare_message(array('action' => 'apc_delete_files_based_on_regex', 'regex' => $mask));
}
/**
* Purges/Flushes post from page caches, varnish and cdncache
* @param $post_id
* @return boolean
*/
function flush_post($post_id) {
return $this->_prepare_message(array('action' => 'flush_post', 'post_id' => $post_id));
}
/**
* Purges/Flushes page caches, varnish and cdncache
* @return boolean
*/
function flush() {
return $this->_prepare_message(array('action' => 'flush'));
}
/**
* Purges/Flushes all enabled caches
* @return boolean
*/
function flush_all() {
return $this->_prepare_message(array('action' => 'flush_all'));
}
/**
* Purges/Flushes url from page caches, varnish and cdncache
* @param string $url
* @return boolean
*/
function flush_url($url) {
return $this->_prepare_message(array('action' => 'flush_url', 'url' => $url));
}
/**
* Makes get request to url specific to post, ie permalinks
* @param $post_id
* @return mixed
*/
function prime_post($post_id) {
return $this->_prepare_message(array('action' => 'prime_post', 'post_id' => $post_id));
}
/**
* Setups message list and if it should be combined or separate
* @param $message
* @return boolean
*/
private function _prepare_message($message) {
$message_signature = json_encode($message);
if (isset($this->messages_by_signature[$message_signature]))
return true;
$this->messages_by_signature[$message_signature] = '*';
$this->messages[] = $message;
$action = $this->_get_action();
if (!$action) {
$this->send_messages();
return true;
}
if (!$this->send_action_configured) {
add_action('w3_redirect', array(
&$this,
'send_messages_w3_redirect'
), 100000, 0);
add_filter('wp_redirect', array(
&$this,
'send_messages_wp_redirect'
), 100000, 1);
add_action('shutdown', array(
&$this,
'send_messages'
), 100000, 0);
$this->send_action_configured = true;
}
return true;
}
/**
* Sends messages stored in $messages
*
* @return boolean
*/
public function send_messages() {
if (count($this->messages) <= 0)
return true;
$this->_log($this->_get_action() . ' sending messages');
$message = array();
$message['actions'] = $this->messages;
$message['blog_id'] = w3_get_blog_id();
$message['host'] = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : null;
$message['hostname'] = @gethostname();
$v = json_encode($message);
try {
$api = $this->_get_api();
if (defined('WP_CLI') && WP_CLI)
$origin = 'WP CLI';
else
$origin = 'WP';
$this->_log($origin . ' sending message ' . $v);
$this->_log('Host: ' . $message['host']);
if (isset($_SERVER['REQUEST_URI']))
$this->_log('URL: ' . $_SERVER['REQUEST_URI']);
if (function_exists('current_filter'))
$this->_log('Current WP hook: ' . current_filter());
$backtrace = debug_backtrace();
$backtrace_optimized = array();
foreach ($backtrace as $b) {
$opt = isset($b['function']) ? $b['function'] . ' ' : '';
$opt .= isset($b['file']) ? $b['file'] . ' ' : '';
$opt .= isset($b['line']) ? '#' . $b['line'] . ' ' : '';
$backtrace_optimized[] = $opt;
}
$this->_log('Backtrace ', $backtrace_optimized);
$r = $api->publish($this->_topic_arn, $v);
if ($r->status != 200) {
$this->_log("Error: {$r->body->Error->Message}");
return false;
}
} catch (Exception $e) {
$this->_log('Error ' . $e->getMessage());
return false;
}
// on success - reset messages array, but not hash (not resent repeatedly the same messages)
$this->messages = array();
return true;
}
/**
* Send messages on wp_redirect
* @param $location
* @return mixed
*/
public function send_messages_wp_redirect($location) {
$this->_log($this->_get_action() . ' sending messages wp_redirect');
$this->send_messages();
return $location;
}
/**
* Send messages on w3_redirect
*/
public function send_messages_w3_redirect() {
$this->_log($this->_get_action() . ' sending messages w3_redirect');
$this->send_messages();
}
/**
* Gets the current running WP action if any. Returns empty string if not found.
* @return string
*/
private function _get_action() {
$action = '';
if (function_exists('current_filter'))
$action = current_filter();
return $action;
}
}