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| 1 | <?php |
| 2 | |
| 3 | namespace NewfoldLabs\WP\Module\Data; |
| 4 | |
| 5 | use Exception; |
| 6 | use NewfoldLabs\WP\Module\Data\EventQueue\EventQueue; |
| 7 | use NewfoldLabs\WP\Module\Data\Listeners\Listener; |
| 8 | use WP_Error; |
| 9 | |
| 10 | /** |
| 11 | * Class to manage event subscriptions |
| 12 | */ |
| 13 | class EventManager { |
| 14 | |
| 15 | /** |
| 16 | * List of default listener category classes |
| 17 | * |
| 18 | * @var Listener[] |
| 19 | */ |
| 20 | const LISTENERS = array( |
| 21 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Admin', |
| 22 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Content', |
| 23 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Cron', |
| 24 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Jetpack', |
| 25 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Plugin', |
| 26 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\BluehostPlugin', |
| 27 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\SiteHealth', |
| 28 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Theme', |
| 29 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Commerce', |
| 30 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\Yoast', |
| 31 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\WonderCart', |
| 32 | '\\NewfoldLabs\\WP\\Module\\Data\\Listeners\\WPMail', |
| 33 | ); |
| 34 | |
| 35 | /** |
| 36 | * List of subscribers receiving event data |
| 37 | * |
| 38 | * @var array |
| 39 | */ |
| 40 | private $subscribers = array(); |
| 41 | |
| 42 | /** |
| 43 | * The queue of events logged in the current request |
| 44 | * |
| 45 | * @var Event[] |
| 46 | */ |
| 47 | private $queue = array(); |
| 48 | |
| 49 | /** |
| 50 | * Initialize the Event Manager |
| 51 | */ |
| 52 | public function init(): void { |
| 53 | $this->initialize_listeners(); |
| 54 | $this->initialize_cron(); |
| 55 | |
| 56 | // Register the shutdown hook which sends or saves all queued events |
| 57 | add_action( 'shutdown', array( $this, 'shutdown' ) ); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Initialize the REST API endpoint. |
| 62 | * |
| 63 | * @see Data::init() |
| 64 | */ |
| 65 | public function initialize_rest_endpoint() { |
| 66 | // Register REST endpoint. |
| 67 | add_action( 'rest_api_init', array( $this, 'rest_api_init' ) ); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Handle setting up the scheduled job for sending updates |
| 72 | */ |
| 73 | protected function initialize_cron(): void { |
| 74 | // Ensure there is a minutely option in the cron schedules |
| 75 | // phpcs:disable WordPress.WP.CronInterval.CronSchedulesInterval |
| 76 | add_filter( 'cron_schedules', array( $this, 'add_minutely_schedule' ) ); |
| 77 | |
| 78 | // Minutely cron hook |
| 79 | add_action( 'nfd_data_sync_cron', array( $this, 'send_saved_events_batch' ) ); |
| 80 | |
| 81 | // Register the cron task |
| 82 | if ( ! wp_next_scheduled( 'nfd_data_sync_cron' ) ) { |
| 83 | wp_schedule_event( time() + constant( 'MINUTE_IN_SECONDS' ), 'minutely', 'nfd_data_sync_cron' ); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Register the event route. |
| 89 | */ |
| 90 | public function rest_api_init() { |
| 91 | $controller = new API\Events( Data::$instance->hiive, $this ); |
| 92 | $controller->register_routes(); |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Add the weekly option to cron schedules if it doesn't exist |
| 97 | * |
| 98 | * @hooked cron_schedules |
| 99 | * |
| 100 | * @param array<string, array{interval:int, display:string}> $schedules List of defined cron schedule options. |
| 101 | * |
| 102 | * @return array<string, array{interval:int, display:string}> |
| 103 | */ |
| 104 | public function add_minutely_schedule( $schedules ) { |
| 105 | if ( ! array_key_exists( 'minutely', $schedules ) || |
| 106 | MINUTE_IN_SECONDS !== $schedules['minutely']['interval'] |
| 107 | ) { |
| 108 | $schedules['minutely'] = array( |
| 109 | 'interval' => MINUTE_IN_SECONDS, |
| 110 | 'display' => __( 'Once Every Minute' ), |
| 111 | ); |
| 112 | } |
| 113 | |
| 114 | return $schedules; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Sends or saves all queued events at the end of the request |
| 119 | * |
| 120 | * @hooked shutdown |
| 121 | */ |
| 122 | public function shutdown(): void { |
| 123 | |
| 124 | // Due to a bug sending too many events, we are temporarily disabling these. |
| 125 | $disabled_events = array( 'pageview', 'page_view', 'wp_mail', 'plugin_updated' ); |
| 126 | foreach ( $this->queue as $index => $event ) { |
| 127 | if ( in_array( $event->key, $disabled_events, true ) ) { |
| 128 | unset( $this->queue[ $index ] ); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | // Separate out the async events |
| 133 | $async = array(); |
| 134 | foreach ( $this->queue as $index => $event ) { |
| 135 | if ( 'pageview' === $event->key ) { |
| 136 | $async[] = $event; |
| 137 | unset( $this->queue[ $index ] ); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | // Save any async events for sending later |
| 142 | if ( ! empty( $async ) ) { |
| 143 | EventQueue::getInstance()->queue()->push( $async ); |
| 144 | } |
| 145 | |
| 146 | // Any remaining items in the queue should be sent now |
| 147 | if ( ! empty( $this->queue ) ) { |
| 148 | $this->send_request_events( $this->queue ); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Register a new event subscriber |
| 154 | * |
| 155 | * @param SubscriberInterface $subscriber Class subscribing to event updates |
| 156 | */ |
| 157 | public function add_subscriber( SubscriberInterface $subscriber ): void { |
| 158 | $this->subscribers[] = $subscriber; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Returns filtered list of registered event subscribers |
| 163 | * |
| 164 | * @return array<SubscriberInterface> List of subscriber classes |
| 165 | */ |
| 166 | public function get_subscribers() { |
| 167 | return apply_filters( 'newfold_data_subscribers', $this->subscribers ); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Return an array of listener classes |
| 172 | * |
| 173 | * @return Listener[] List of listener classes |
| 174 | */ |
| 175 | public function get_listeners() { |
| 176 | return apply_filters( 'newfold_data_listeners', $this::LISTENERS ); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Initialize event listener classes |
| 181 | */ |
| 182 | protected function initialize_listeners(): void { |
| 183 | if ( defined( 'BURST_SAFETY_MODE' ) && constant( 'BURST_SAFETY_MODE' ) ) { |
| 184 | // Disable listeners when site is under heavy load |
| 185 | return; |
| 186 | } |
| 187 | foreach ( $this->get_listeners() as $listener ) { |
| 188 | $class = new $listener( $this ); |
| 189 | $class->register_hooks(); |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Push event data onto the queue |
| 195 | * |
| 196 | * @param Event $event Details about the action taken |
| 197 | */ |
| 198 | public function push( Event $event ): void { |
| 199 | /** |
| 200 | * The `nfd_event_log` action is handled in the notification module. |
| 201 | * |
| 202 | * @see wp-module-notifications/notifications.php |
| 203 | */ |
| 204 | do_action( 'nfd_event_log', $event->key, $event ); |
| 205 | $this->queue[] = $event; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Send queued events to all subscribers; store them if they fail |
| 210 | * |
| 211 | * @used-by EventManager::shutdown() |
| 212 | * |
| 213 | * @param Event[] $events A list of events |
| 214 | */ |
| 215 | protected function send_request_events( array $events ): void { |
| 216 | foreach ( $this->get_subscribers() as $subscriber ) { |
| 217 | /** |
| 218 | * @var array{succeededEvents:array,failedEvents:array}|WP_Error $response |
| 219 | */ |
| 220 | $response = $subscriber->notify( $events ); |
| 221 | |
| 222 | // Due to an unidentified bug causing events to be resent, we are temporarily disabling retries. |
| 223 | continue; |
| 224 | |
| 225 | if ( ! ( $subscriber instanceof HiiveConnection ) ) { |
| 226 | continue; |
| 227 | } |
| 228 | |
| 229 | if ( is_wp_error( $response ) ) { |
| 230 | EventQueue::getInstance()->queue()->push( $events ); |
| 231 | continue; |
| 232 | } |
| 233 | |
| 234 | if ( ! empty( $response['failedEvents'] ) ) { |
| 235 | EventQueue::getInstance()->queue()->push( $response['failedEvents'] ); |
| 236 | } |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * Send stored events to all subscribers; remove/release them from the store aftewards. |
| 242 | * |
| 243 | * @hooked nfd_data_sync_cron |
| 244 | */ |
| 245 | public function send_saved_events_batch(): void { |
| 246 | |
| 247 | $queue = EventQueue::getInstance()->queue(); |
| 248 | |
| 249 | /** |
| 250 | * Array indexed by the table row id. |
| 251 | * |
| 252 | * @var array<int,Event> $events |
| 253 | */ |
| 254 | $events = $queue->pull( 50 ); |
| 255 | |
| 256 | // If queue is empty, do nothing. |
| 257 | if ( empty( $events ) ) { |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | // Reserve the events in the queue so they are not processed by another instance. |
| 262 | if ( ! $queue->reserve( array_keys( $events ) ) ) { |
| 263 | // If the events fail to reserve, they will be repeatedly retried. |
| 264 | // It would be good to log this somewhere. |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | foreach ( $this->get_subscribers() as $subscriber ) { |
| 269 | /** |
| 270 | * @var array{succeededEvents:array,failedEvents:array}|WP_Error $response |
| 271 | */ |
| 272 | $response = $subscriber->notify( $events ); |
| 273 | |
| 274 | // Due to an unidentified bug causing events to be resent, we are temporarily disabling retries. |
| 275 | continue; |
| 276 | |
| 277 | if ( ! ( $subscriber instanceof HiiveConnection ) ) { |
| 278 | continue; |
| 279 | } |
| 280 | |
| 281 | if ( is_wp_error( $response ) ) { |
| 282 | $queue->release( array_keys( $events ) ); |
| 283 | continue; |
| 284 | } |
| 285 | |
| 286 | // Remove from the queue. |
| 287 | if ( ! empty( $response['succeededEvents'] ) ) { |
| 288 | $queue->remove( array_keys( $response['succeededEvents'] ) ); |
| 289 | } |
| 290 | |
| 291 | // Release the 'reserve' we placed on the entry, so it will be tried again later. |
| 292 | if ( ! empty( $response['failedEvents'] ) ) { |
| 293 | $queue->release( array_keys( $response['failedEvents'] ) ); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | // Due to an unidentified bug causing events to be resent, we are temporarily disabling retries. |
| 298 | $queue->remove( array_keys( $events ) ); |
| 299 | } |
| 300 | } |