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| 1 | <?php |
| 2 | /** |
| 3 | * Analytics-aware sync milestone tracker. |
| 4 | * |
| 5 | * @package automattic/jetpack-premium-analytics |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\PremiumAnalytics\Sync; |
| 9 | |
| 10 | use Automattic\Jetpack\Sync\Modules; |
| 11 | |
| 12 | /** |
| 13 | * Listens for the end of the analytics full sync and persists a one-time milestone option, and |
| 14 | * records when each analytics module's first full sync starts. |
| 15 | * |
| 16 | * /jetpack/v4/sync/status reports current sync state but not whether the analytics full sync |
| 17 | * has completed at least once — which is what tells the dashboard's store section its numbers are complete. |
| 18 | */ |
| 19 | class Sync_Status_Tracker { |
| 20 | |
| 21 | /** |
| 22 | * Milestone (unix ts) for the analytics-module initial full sync. Marks the |
| 23 | * dashboard's store data as complete. |
| 24 | */ |
| 25 | const INITIAL_ANALYTICS_SYNC_OPTION = 'jetpack_premium_analytics_initial_analytics_sync_finished'; |
| 26 | |
| 27 | /** |
| 28 | * First full-sync start timestamps, keyed by analytics module name. |
| 29 | * |
| 30 | * @since 0.14.0 |
| 31 | */ |
| 32 | const ANALYTICS_SYNC_STARTED_OPTION = 'jetpack_premium_analytics_analytics_sync_started'; |
| 33 | |
| 34 | /** |
| 35 | * Consumer packages register their analytics module names through the sync-module filter. |
| 36 | * |
| 37 | * @var string[] |
| 38 | */ |
| 39 | const ANALYTICS_SYNC_MODULES = array(); |
| 40 | |
| 41 | /** |
| 42 | * Action hook fired once when the analytics milestone flips. Consumer plugins |
| 43 | * use this to fire one-time side-effects keyed to store data (emails, tracking |
| 44 | * events, etc.). |
| 45 | * |
| 46 | * @var string |
| 47 | */ |
| 48 | const MILESTONE_ACTION = 'jetpack_premium_analytics_initial_full_sync_finished'; |
| 49 | |
| 50 | /** |
| 51 | * Jetpack core's sync-status REST route, enriched with the milestone. |
| 52 | */ |
| 53 | const SYNC_STATUS_ROUTE = '/jetpack/v4/sync/status'; |
| 54 | |
| 55 | /** |
| 56 | * Wire up the milestone listener, the full-sync start record, the script-data filter, and the sync-status enricher. |
| 57 | * |
| 58 | * Idempotent: safe to call more than once. |
| 59 | * |
| 60 | * @return void |
| 61 | */ |
| 62 | public static function configure() { |
| 63 | add_action( 'jetpack_sync_processed_actions', array( self::class, 'on_sync_processed_actions' ) ); |
| 64 | add_action( 'jetpack_full_sync_start', array( self::class, 'on_full_sync_start' ) ); |
| 65 | add_filter( 'jetpack_admin_js_script_data', array( self::class, 'inject_script_data' ) ); |
| 66 | add_filter( 'rest_post_dispatch', array( self::class, 'enrich_sync_status_response' ), 10, 3 ); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Append the milestone to Jetpack core's GET /jetpack/v4/sync/status response. |
| 71 | * |
| 72 | * Unlike the one-time script-data snapshot ({@see inject_script_data()}), this stays live for |
| 73 | * in-session completion — but touches only the already-authorized, successful status payload. |
| 74 | * |
| 75 | * @param mixed $response Result to send to the client. Usually a WP_REST_Response. |
| 76 | * @param mixed $server The REST server instance (unused). |
| 77 | * @param mixed $request The request used to generate the response. |
| 78 | * @return mixed |
| 79 | */ |
| 80 | public static function enrich_sync_status_response( $response, $server, $request ) { |
| 81 | if ( ! $request instanceof \WP_REST_Request |
| 82 | || self::SYNC_STATUS_ROUTE !== $request->get_route() |
| 83 | || ! $response instanceof \WP_REST_Response |
| 84 | || $response->is_error() ) { |
| 85 | return $response; |
| 86 | } |
| 87 | |
| 88 | $data = $response->get_data(); |
| 89 | if ( is_array( $data ) ) { |
| 90 | self::maybe_backfill_milestone(); |
| 91 | $data['initial_full_sync_finished'] = self::milestone(); |
| 92 | $response->set_data( $data ); |
| 93 | } |
| 94 | |
| 95 | return $response; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * On every batch of processed sync actions, look for the gating |
| 100 | * jetpack_full_sync_end and flip the milestone if it hasn't already fired. |
| 101 | * |
| 102 | * @param array $actions Processed sync actions. |
| 103 | * @return void |
| 104 | */ |
| 105 | public static function on_sync_processed_actions( array $actions ): void { |
| 106 | // Bail before the per-batch full-sync lookup ($module->get_status() bypasses |
| 107 | // the status cache) once the milestone is set. |
| 108 | if ( self::milestone_reached() ) { |
| 109 | return; |
| 110 | } |
| 111 | |
| 112 | $module = Modules::get_module( 'full-sync' ); |
| 113 | if ( ! $module ) { |
| 114 | return; |
| 115 | } |
| 116 | '@phan-var \Automattic\Jetpack\Sync\Modules\Full_Sync_Immediately|\Automattic\Jetpack\Sync\Modules\Full_Sync $module'; |
| 117 | |
| 118 | self::maybe_set_milestone( $module->get_status(), $actions ); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Resolve the configured sync-module names for analytics. |
| 123 | * |
| 124 | * @return string[] |
| 125 | */ |
| 126 | public static function get_analytics_sync_modules(): array { |
| 127 | /** |
| 128 | * Filter the analytics module names whose starts are tracked and whose completion sets the milestone. |
| 129 | * |
| 130 | * @param string[] $module_names Default: empty array. |
| 131 | */ |
| 132 | return (array) apply_filters( 'jetpack_premium_analytics_sync_modules', self::ANALYTICS_SYNC_MODULES ); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Decide whether the supplied full-sync status and actions represent the analytics sync ending. |
| 137 | * |
| 138 | * Only a full sync whose config includes an analytics module counts — a generic sync can't mark |
| 139 | * store data complete; split out so tests can exercise it without the sync module registry. |
| 140 | * |
| 141 | * @param array $full_status Result of Full_Sync_Immediately::get_status(). |
| 142 | * @param array $actions Processed sync actions. |
| 143 | * @return void |
| 144 | */ |
| 145 | public static function maybe_set_milestone( array $full_status, array $actions ): void { |
| 146 | if ( self::milestone_reached() ) { |
| 147 | return; |
| 148 | } |
| 149 | |
| 150 | if ( ! self::includes_analytics_module( $full_status['config'] ?? array() ) ) { |
| 151 | return; |
| 152 | } |
| 153 | |
| 154 | $end_action = self::find_full_sync_end_action( $actions ); |
| 155 | if ( ! $end_action ) { |
| 156 | return; |
| 157 | } |
| 158 | |
| 159 | // The last update_status() call in Full_Sync_Immediately::send() runs after jetpack_full_sync_end |
| 160 | // fires, so the action's own timestamp is the most reliable "finished at" value (Year 2038 problem aside). |
| 161 | $finished_at = isset( $end_action[3] ) ? (int) $end_action[3] : 0; |
| 162 | if ( $finished_at <= 0 ) { |
| 163 | // Defensive: avoid persisting a zero timestamp, which would equal the "not yet set" sentinel |
| 164 | // and cause the listener to re-trigger on the next batch. |
| 165 | return; |
| 166 | } |
| 167 | |
| 168 | $full_status['finished'] = $finished_at; |
| 169 | self::set_milestone( $full_status ); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Set the milestone from a stored full-sync status whose analytics module already finished. |
| 174 | * |
| 175 | * Covers a full sync that ended before this listener ran (an older Jetpack, or before Premium Analytics was enabled). |
| 176 | * |
| 177 | * @return void |
| 178 | */ |
| 179 | private static function maybe_backfill_milestone(): void { |
| 180 | if ( self::milestone_reached() ) { |
| 181 | return; |
| 182 | } |
| 183 | |
| 184 | $module = Modules::get_module( 'full-sync' ); |
| 185 | if ( ! $module ) { |
| 186 | return; |
| 187 | } |
| 188 | '@phan-var \Automattic\Jetpack\Sync\Modules\Full_Sync_Immediately|\Automattic\Jetpack\Sync\Modules\Full_Sync $module'; |
| 189 | |
| 190 | $full_status = $module->get_status(); |
| 191 | $finished_at = isset( $full_status['finished'] ) ? (int) $full_status['finished'] : 0; |
| 192 | if ( $finished_at <= 0 || empty( $full_status['progress'] ) || ! is_array( $full_status['progress'] ) ) { |
| 193 | return; |
| 194 | } |
| 195 | |
| 196 | $progress = $full_status['progress']; |
| 197 | foreach ( self::get_analytics_sync_modules() as $module_name ) { |
| 198 | if ( isset( $progress[ $module_name ]['finished'] ) && true === $progress[ $module_name ]['finished'] ) { |
| 199 | // The sender sets the milestone before it stores `finished`, so re-read it past the |
| 200 | // request's option cache to avoid firing the action a second time. |
| 201 | if ( (int) \Jetpack_Options::get_raw_option( self::INITIAL_ANALYTICS_SYNC_OPTION, 0 ) > 0 ) { |
| 202 | return; |
| 203 | } |
| 204 | self::set_milestone( $full_status ); |
| 205 | return; |
| 206 | } |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * Persist the milestone and fire the one-time action. |
| 212 | * |
| 213 | * @param array $full_status Final full-sync status, with a positive `finished` timestamp. |
| 214 | * @return void |
| 215 | */ |
| 216 | private static function set_milestone( array $full_status ): void { |
| 217 | // Record the finishing sync's modules first, so a milestone set after the update never reads as a legacy one. |
| 218 | if ( false === get_option( self::ANALYTICS_SYNC_STARTED_OPTION ) ) { |
| 219 | self::on_full_sync_start( $full_status['config'] ?? array() ); |
| 220 | } |
| 221 | |
| 222 | update_option( self::INITIAL_ANALYTICS_SYNC_OPTION, (int) $full_status['finished'] ); |
| 223 | |
| 224 | /** |
| 225 | * Fires once when the analytics-relevant initial full sync completes. |
| 226 | * |
| 227 | * @param array $full_status Final full-sync status (with `finished` timestamp). |
| 228 | */ |
| 229 | do_action( self::MILESTONE_ACTION, $full_status ); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Record each analytics module's first full-sync start. |
| 234 | * |
| 235 | * A milestone set before start records existed counts as a start of every module registered then. |
| 236 | * |
| 237 | * @since 0.14.0 |
| 238 | * |
| 239 | * @param array|mixed $config Sync configuration of the full sync that began. |
| 240 | * @return void |
| 241 | */ |
| 242 | public static function on_full_sync_start( $config ): void { |
| 243 | $config = (array) $config; |
| 244 | $previous = (array) get_option( self::ANALYTICS_SYNC_STARTED_OPTION, array() ); |
| 245 | $started = $previous; |
| 246 | if ( self::is_legacy_start() ) { |
| 247 | $started = array_fill_keys( self::get_analytics_sync_modules(), self::milestone() ); |
| 248 | } |
| 249 | foreach ( self::get_analytics_sync_modules() as $module_name ) { |
| 250 | if ( ! empty( $config[ $module_name ] ) && empty( $started[ $module_name ] ) ) { |
| 251 | $started[ $module_name ] = time(); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | if ( $started !== $previous ) { |
| 256 | update_option( self::ANALYTICS_SYNC_STARTED_OPTION, $started ); |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * Whether the given module's full sync has ever started on this site. |
| 262 | * |
| 263 | * @since 0.14.0 |
| 264 | * |
| 265 | * @param string $module_name Sync module name. |
| 266 | * @return bool |
| 267 | */ |
| 268 | public static function has_module_full_sync_started( string $module_name ): bool { |
| 269 | if ( self::is_legacy_start() ) { |
| 270 | return true; |
| 271 | } |
| 272 | |
| 273 | $started = (array) get_option( self::ANALYTICS_SYNC_STARTED_OPTION, array() ); |
| 274 | if ( (int) ( $started[ $module_name ] ?? 0 ) > 0 ) { |
| 275 | return true; |
| 276 | } |
| 277 | |
| 278 | // A cached miss can predate another request's start, and a sync begun before start records existed never records one. |
| 279 | $started = (array) \Jetpack_Options::get_raw_option( self::ANALYTICS_SYNC_STARTED_OPTION, array() ); |
| 280 | if ( (int) ( $started[ $module_name ] ?? 0 ) > 0 ) { |
| 281 | return true; |
| 282 | } |
| 283 | |
| 284 | $full_status = self::get_full_sync_status(); |
| 285 | if ( empty( $full_status['started'] ) || empty( $full_status['config'][ $module_name ] ) ) { |
| 286 | return false; |
| 287 | } |
| 288 | |
| 289 | self::on_full_sync_start( $full_status['config'] ); |
| 290 | return true; |
| 291 | } |
| 292 | |
| 293 | /** |
| 294 | * The stored full-sync status, read past the option cache. |
| 295 | * |
| 296 | * @return array |
| 297 | */ |
| 298 | private static function get_full_sync_status(): array { |
| 299 | $module = Modules::get_module( 'full-sync' ); |
| 300 | if ( ! $module ) { |
| 301 | return array(); |
| 302 | } |
| 303 | '@phan-var \Automattic\Jetpack\Sync\Modules\Full_Sync_Immediately|\Automattic\Jetpack\Sync\Modules\Full_Sync $module'; |
| 304 | |
| 305 | return (array) $module->get_status(); |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * Whether the milestone predates the start records, so it stands in for them. |
| 310 | * |
| 311 | * @return bool |
| 312 | */ |
| 313 | private static function is_legacy_start(): bool { |
| 314 | return false === get_option( self::ANALYTICS_SYNC_STARTED_OPTION ) && self::milestone_reached(); |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Whether a full-sync configuration covers an analytics module. |
| 319 | * |
| 320 | * @param array|mixed $config Full-sync configuration, keyed by module name. |
| 321 | * @return bool |
| 322 | */ |
| 323 | private static function includes_analytics_module( $config ): bool { |
| 324 | $config = (array) $config; |
| 325 | foreach ( self::get_analytics_sync_modules() as $module_name ) { |
| 326 | if ( ! empty( $config[ $module_name ] ) ) { |
| 327 | return true; |
| 328 | } |
| 329 | } |
| 330 | return false; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Inject the milestone into JetpackScriptData so the dashboard can read it at |
| 335 | * page load without an extra HTTP roundtrip. |
| 336 | * |
| 337 | * @param array $data The script data passed by the assets package. |
| 338 | * @return array |
| 339 | */ |
| 340 | public static function inject_script_data( array $data ): array { |
| 341 | $data['premium_analytics'] = array( |
| 342 | 'initial_full_sync_finished' => self::milestone(), |
| 343 | ); |
| 344 | |
| 345 | return $data; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * The milestone timestamp (0 if not yet reached). |
| 350 | * |
| 351 | * @return int |
| 352 | */ |
| 353 | private static function milestone(): int { |
| 354 | return (int) get_option( self::INITIAL_ANALYTICS_SYNC_OPTION, 0 ); |
| 355 | } |
| 356 | |
| 357 | /** |
| 358 | * Whether the milestone has fired. |
| 359 | * |
| 360 | * @return bool |
| 361 | */ |
| 362 | private static function milestone_reached(): bool { |
| 363 | return self::milestone() > 0; |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Whether the first analytics full sync has finished. |
| 368 | * |
| 369 | * @since 0.14.0 |
| 370 | * |
| 371 | * @return bool |
| 372 | */ |
| 373 | public static function has_initial_sync_finished(): bool { |
| 374 | return self::milestone_reached(); |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Find the jetpack_full_sync_end action in a processed-actions list. |
| 379 | * |
| 380 | * @param array $actions Actions list. |
| 381 | * @return array|null |
| 382 | */ |
| 383 | private static function find_full_sync_end_action( array $actions ): ?array { |
| 384 | foreach ( $actions as $action ) { |
| 385 | if ( isset( $action[0] ) && 'jetpack_full_sync_end' === $action[0] ) { |
| 386 | return $action; |
| 387 | } |
| 388 | } |
| 389 | return null; |
| 390 | } |
| 391 | } |