public function __construct()
{
// Objects
$this->oBase64 = new FetchTweets_Base64();
// For transient (cache) renewal events
add_action('fetch_tweets_action_transient_renewal', array($this, '_replyToRenewTransients'));
// For transient (cache) formatting events - adds oEmbed elements.
add_action('fetch_tweets_action_transient_add_oembed_elements', array($this, '_replyToAddOEmbedElements'));
// For SimplePie cache renewal events
add_action('fetch_tweets_action_simplepie_renew_cache', array($this, '_replyToRenewSimplePieCaches'));
// This must be called after the above action hooks are added.
if ('intense' == $GLOBALS['oFetchTweets_Option']->aOptions['cache_settings']['caching_mode']) {
new FetchTweets_Cron(apply_filters('fetch_tweets_filter_plugin_cron_actions', array('fetch_tweets_action_transient_renewal', 'fetch_tweets_action_transient_add_oembed_elements', 'fetch_tweets_action_simplepie_renew_cache')));
} else {
if (FetchTweets_Cron::isBackground()) {
exit;
}
}
// Redirects
if (isset($_GET['fetch_tweets_link']) && $_GET['fetch_tweets_link']) {
$_oRedirect = new FetchTweets_Redirects();
$_oRedirect->go($_GET['fetch_tweets_link']);
// will exit there.
}
// Draw the cached image.
if (isset($_GET['fetch_tweets_image']) && $_GET['fetch_tweets_image'] && is_user_logged_in()) {
$_oImageLoader = new FetchTweets_ImageHandler('FTWS');
$_oImageLoader->draw($_GET['fetch_tweets_image']);
exit;
}
// For the activation hook
add_action('fetch_tweets_action_setup_transients', array($this, '_replyToSetUpTransients'));
}
/**
* A wrapper method for the set_transient() function.
*
* @since 1.2.0
* @since 1.3.0 Made it public as the event method uses it.
*/
public function setTransient($sRequestURI, $vData, $iTime = null, $bIgnoreLock = false)
{
$_sTransientKey = FetchTweets_Commons::TransientPrefix . "_" . md5(trim($sRequestURI));
$_sLockTransient = FetchTweets_Commons::TransientPrefix . '_' . md5("Lock_" . $_sTransientKey);
// Give some time to the server to store transients in case of simultaneous accesses.
if (FetchTweets_Cron::isBackground()) {
sleep(1);
}
// Check if the transient is locked.
if (!$bIgnoreLock && false !== FetchTweets_WPUtilities::getTransient($_sLockTransient)) {
return;
// it means the cache is being modified.
}
// Set a lock flag transient that indicates the transient is being renewed.
if (!$bIgnoreLock) {
FetchTweets_WPUtilities::setTransient($_sLockTransient, 'locked', 10);
}
// Store the cache
$_bIsSet = FetchTweets_WPUtilities::setTransient($_sTransientKey, array('mod' => $iTime ? $iTime : time(), 'data' => $this->oBase64->encode($vData)));
if (!$_bIsSet) {
return;
}
// Schedule the action to run in the background with WP Cron. If already scheduled, skip.
// This adds the embedding elements which takes some time to process.
$_aArgs = array($sRequestURI);
if ($iTime || wp_next_scheduled('fetch_tweets_action_transient_add_oembed_elements', $_aArgs)) {
return;
}
wp_schedule_single_event(time(), 'fetch_tweets_action_transient_add_oembed_elements', $_aArgs);
if ('intense' == $this->oOption->aOptions['cache_settings']['caching_mode']) {
FetchTweets_Cron::see(array(), true);
} else {
// $this->arrExpiredTransientsRequestURIs
wp_remote_get(site_url("/wp-cron.php"), array('timeout' => 0.01, 'sslverify' => false));
}
// Delete the lock transient
// FetchTweets_WPUtilities::deleteTransient( $_sLockTransient );
}