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<?php |
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/** |
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* Jetbench allows dynamic, transient enabling/disabling and some configuration of Jetpack modules based on a cookie. |
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* |
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* This allows us to benchmark and debug the effect of Jetpack configuration changes without making permanent changes |
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* to a site. |
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* |
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* TODO: generate cookie name based on shared secret? |
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*/ |
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// basic idea here is to hook super early and change configuration for this request in a transient way |
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if ( ! isset( $_COOKIE[JETPACK__BENCHMARK_COOKIE] ) ) { |
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return; |
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} |
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$cookie = $_COOKIE[JETPACK__BENCHMARK_COOKIE]; |
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$jetbench_settings = json_decode( $cookie, true ); |
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if ( ! $jetbench_settings ) { |
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error_log("Could not JSON decode Jetpack Benchmark settings: " . $cookie ); |
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unset( $_COOKIE[JETPACK__BENCHMARK_COOKIE] ); |
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if ( ! headers_sent() ) { |
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setcookie( JETPACK__BENCHMARK_COOKIE, '', time() - ( 15 * 60 ) ); |
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} |
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return; |
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} |
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error_log(print_r($jetbench_settings,1)); |
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class Jetbench { |
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static $force_module_statuses = array(); |
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static $settings; |
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static function init( $settings ) { |
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self::$settings = $settings; |
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// after Jetpack::init is called, but before Jetpack::load_modules is called... |
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add_filter( 'plugins_loaded', array( 'Jetbench', 'set_module_statuses' ) ); |
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// when we ask for active Jetpack modules, filter the results |
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add_filter( 'option_jetpack_active_modules', array( 'Jetbench', 'filter_active_modules' ) ); |
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} |
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static function set_module_statuses() { |
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// load configuration into static variables |
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$enabled_modules = array(); |
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$disabled_modules = array(); |
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foreach ( Jetpack::get_available_modules() as $module ) { |
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error_log("setting status for $module"); |
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if ( isset( self::$settings[$module] ) ) { |
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// enable module based on truthiness of configuration value |
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if ( self::$force_module_statuses[$module] = !! self::$settings[$module] ) { |
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$enabled_modules[] = $module; |
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} else { |
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$disabled_modules[] = $module; |
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} |
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// if ( 'somename' === $module && is_array( $settings[$module] ) ) { |
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// do something special with $settings[$module] |
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// } |
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} |
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} |
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if ( ! headers_sent() ) { |
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if ( count( $disabled_modules ) > 0 ) { |
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header( 'X-Jetbench-Module-Disabled: ' . implode( ',', $disabled_modules ) ); |
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} |
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if ( count( $enabled_modules ) > 0 ) { |
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header( 'X-Jetbench-Module-Enabled: ' . implode( ',', $enabled_modules ) ); |
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} |
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} |
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} |
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static function filter_active_modules( $modules ) { |
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$disabled = array(); |
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$enabled = array(); |
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foreach( self::$force_module_statuses as $module => $status ) { |
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if ( $status ) { |
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if ( ! in_array( $module, $modules ) ) { |
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$modules[] = $module; |
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$enabled[] = $module; |
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} |
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} else { |
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while ( ( $key = array_search( $module, $modules ) ) !== false ) { |
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unset( $modules[ $key ]); |
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$disabled[] = $module; |
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} |
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} |
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} |
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return $modules; |
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} |
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} |
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Jetbench::init( $jetbench_settings ); |
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Automattic /
jetpack
