View file File name : Varnish_Plugin.php Content :<?php namespace W3TC; /** * class Varnish_Plugin */ class Varnish_Plugin { /** * Runs plugin */ public function run() { Util_AttachToActions::flush_posts_on_actions(); add_action( 'w3tc_flush_all', array( $this, 'varnish_flush' ), 2000, 1 ); add_action( 'w3tc_flush_post', array( $this, 'varnish_flush_post' ), 2000, 1 ); add_action( 'w3tc_flushable_posts', '__return_true', 2000 ); add_action( 'w3tc_flush_posts', array( $this, 'varnish_flush' ), 2000 ); add_action( 'w3tc_flush_url', array( $this, 'varnish_flush_url' ), 2000, 1 ); add_filter( 'w3tc_admin_bar_menu', array( $this, 'w3tc_admin_bar_menu' ) ); } /** * Purges varnish cache * * @return mixed */ public function varnish_flush( $extras = array() ) { if ( isset( $extras['only'] ) && $extras['only'] != 'varnish' ) return; $varnishflush = Dispatcher::component( 'Varnish_Flush' ); $v = $varnishflush->flush(); return $v; } /** * Purges post from varnish * * @param integer $post_id * @return mixed */ public function varnish_flush_post( $post_id ) { $varnishflush = Dispatcher::component( 'Varnish_Flush' ); $v = $varnishflush->flush_post( $post_id ); return $v; } /** * Purges post from varnish * * @param string $url * @return mixed */ public function varnish_flush_url( $url ) { $varnishflush = Dispatcher::component( 'Varnish_Flush' ); $v = $varnishflush->flush_url( $url ); return $v; } public function w3tc_admin_bar_menu( $menu_items ) { $menu_items['20610.varnish'] = array( 'id' => 'w3tc_flush_varnish', 'parent' => 'w3tc_flush', 'title' => __( 'Reverse Proxy', 'w3-total-cache' ), 'href' => wp_nonce_url( network_admin_url( 'admin.php?page=w3tc_dashboard&w3tc_flush_varnish' ), 'w3tc' ) ); return $menu_items; } }