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| 1 | <?php |
| 2 | /** |
| 3 | * The class responsible for storing Queue events in the `wp_options` table. |
| 4 | * |
| 5 | * Used by class Queue. |
| 6 | * |
| 7 | * @see \Automattic\Jetpack\Sync\Queue |
| 8 | * |
| 9 | * @package automattic/jetpack-sync |
| 10 | */ |
| 11 | |
| 12 | namespace Automattic\Jetpack\Sync\Queue; |
| 13 | |
| 14 | /** |
| 15 | * `wp_options` storage backend for the Queue. |
| 16 | */ |
| 17 | class Queue_Storage_Options { |
| 18 | /** |
| 19 | * What queue is this instance responsible for. |
| 20 | * |
| 21 | * @var string |
| 22 | */ |
| 23 | public $queue_id = ''; |
| 24 | |
| 25 | /** |
| 26 | * Class constructor. |
| 27 | * |
| 28 | * @param string $queue_id The queue name this instance will be responsible for. |
| 29 | * |
| 30 | * @throws \Exception If queue name was not provided. |
| 31 | */ |
| 32 | public function __construct( $queue_id ) { |
| 33 | if ( empty( $queue_id ) ) { |
| 34 | // TODO what should we return here or throw an exception? |
| 35 | throw new \Exception( 'Invalid queue_id provided' ); |
| 36 | } |
| 37 | |
| 38 | // TODO validate the value maybe? |
| 39 | $this->queue_id = $queue_id; |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Insert an item in the queue. |
| 44 | * |
| 45 | * @param string $item_id The item ID. |
| 46 | * @param string $item Serialized item data. |
| 47 | * |
| 48 | * @return bool If the item was added. |
| 49 | */ |
| 50 | public function insert_item( $item_id, $item ) { |
| 51 | global $wpdb; |
| 52 | |
| 53 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 54 | $rows_added = $wpdb->query( |
| 55 | $wpdb->prepare( |
| 56 | "INSERT INTO $wpdb->options (option_name, option_value, autoload) VALUES (%s, %s,%s)", |
| 57 | $item_id, |
| 58 | $item, |
| 59 | 'no' |
| 60 | ) |
| 61 | ); |
| 62 | |
| 63 | return ( 0 !== $rows_added ); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Fetch items from the queue. |
| 68 | * |
| 69 | * @param int|null $item_count How many items to fetch from the queue. |
| 70 | * Null for no limit. |
| 71 | * @param string $order Sort direction for the items. Accepts 'ASC' or 'DESC'. |
| 72 | * Any other value will be treated as 'ASC'. |
| 73 | * |
| 74 | * @return array|object|null Array of result objects on success, or null on failure. |
| 75 | */ |
| 76 | public function fetch_items( $item_count, $order = 'ASC' ) { |
| 77 | global $wpdb; |
| 78 | |
| 79 | $order = 'DESC' === $order ? 'DESC' : 'ASC'; |
| 80 | |
| 81 | $sql_order = "ORDER BY option_name {$order}"; |
| 82 | |
| 83 | $sql = "SELECT option_name AS id, option_value AS value |
| 84 | FROM $wpdb->options |
| 85 | WHERE option_name LIKE %s |
| 86 | {$sql_order}"; |
| 87 | |
| 88 | $params = array( "jpsq_{$this->queue_id}-%" ); |
| 89 | |
| 90 | if ( $item_count ) { |
| 91 | $sql .= ' LIMIT %d'; |
| 92 | $params[] = $item_count; |
| 93 | } |
| 94 | |
| 95 | // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching |
| 96 | $items = $wpdb->get_results( |
| 97 | $wpdb->prepare( $sql, $params ), // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared |
| 98 | OBJECT |
| 99 | ); |
| 100 | |
| 101 | return $items; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Fetches items with specific IDs from the Queue. |
| 106 | * |
| 107 | * @param array $items_ids Items IDs to fetch from the queue. |
| 108 | * |
| 109 | * @return \stdClass[]|null |
| 110 | */ |
| 111 | public function fetch_items_by_ids( $items_ids ) { |
| 112 | global $wpdb; |
| 113 | |
| 114 | // return early if $items_ids is empty or not an array. |
| 115 | if ( empty( $items_ids ) || ! is_array( $items_ids ) ) { |
| 116 | return array(); |
| 117 | } |
| 118 | |
| 119 | $ids_placeholders = implode( ', ', array_fill( 0, count( $items_ids ), '%s' ) ); |
| 120 | |
| 121 | $query_with_placeholders = "SELECT option_name AS id, option_value AS value |
| 122 | FROM $wpdb->options |
| 123 | WHERE option_name IN ( $ids_placeholders )"; |
| 124 | |
| 125 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 126 | $items = $wpdb->get_results( |
| 127 | $wpdb->prepare( |
| 128 | $query_with_placeholders, // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared |
| 129 | $items_ids |
| 130 | ), |
| 131 | OBJECT |
| 132 | ); |
| 133 | |
| 134 | return $items; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Clear out the queue. |
| 139 | * |
| 140 | * @return bool|int|\mysqli_result|resource|null |
| 141 | */ |
| 142 | public function clear_queue() { |
| 143 | global $wpdb; |
| 144 | |
| 145 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 146 | return $wpdb->query( |
| 147 | $wpdb->prepare( |
| 148 | "DELETE FROM $wpdb->options WHERE option_name LIKE %s", |
| 149 | "jpsq_{$this->queue_id}-%" |
| 150 | ) |
| 151 | ); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Check how many items are in the queue. |
| 156 | * |
| 157 | * @return int |
| 158 | */ |
| 159 | public function get_item_count() { |
| 160 | global $wpdb; |
| 161 | |
| 162 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 163 | return (int) $wpdb->get_var( |
| 164 | $wpdb->prepare( |
| 165 | "SELECT count(*) FROM $wpdb->options WHERE option_name LIKE %s", |
| 166 | "jpsq_{$this->queue_id}-%" |
| 167 | ) |
| 168 | ); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Return the lag amount for the queue. |
| 173 | * |
| 174 | * @param float|int|null $now A timestamp to use as starting point when calculating the lag. |
| 175 | * |
| 176 | * @return float|int The lag amount. |
| 177 | */ |
| 178 | public function get_lag( $now = null ) { |
| 179 | global $wpdb; |
| 180 | |
| 181 | // TODO replace with peek and a flag to fetch only the name. |
| 182 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 183 | $first_item_name = $wpdb->get_var( |
| 184 | $wpdb->prepare( |
| 185 | "SELECT option_name FROM $wpdb->options WHERE option_name LIKE %s ORDER BY option_name ASC LIMIT 1", |
| 186 | "jpsq_{$this->queue_id}-%" |
| 187 | ) |
| 188 | ); |
| 189 | |
| 190 | if ( ! $first_item_name ) { |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | if ( null === $now ) { |
| 195 | $now = microtime( true ); |
| 196 | } |
| 197 | |
| 198 | // Break apart the item name to get the timestamp. |
| 199 | $matches = null; |
| 200 | if ( preg_match( '/^jpsq_' . $this->queue_id . '-(\d+\.\d+)-/', $first_item_name, $matches ) ) { |
| 201 | return $now - (float) $matches[1]; |
| 202 | } else { |
| 203 | return 0; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Add multiple items to the queue at once. |
| 209 | * |
| 210 | * @param array $items Array of items to add. |
| 211 | * @param string $id_prefix Prefix to use for all the items. |
| 212 | * |
| 213 | * @return bool|int|\mysqli_result|resource|null |
| 214 | */ |
| 215 | public function add_all( $items, $id_prefix ) { |
| 216 | global $wpdb; |
| 217 | |
| 218 | $query = "INSERT INTO $wpdb->options (option_name, option_value, autoload) VALUES "; |
| 219 | |
| 220 | $rows = array(); |
| 221 | $count_items = count( $items ); |
| 222 | for ( $i = 0; $i < $count_items; ++$i ) { |
| 223 | // skip empty items. |
| 224 | if ( empty( $items[ $i ] ) ) { |
| 225 | continue; |
| 226 | } |
| 227 | try { |
| 228 | $option_name = esc_sql( $id_prefix . '-' . $i ); |
| 229 | $option_value = esc_sql( serialize( $items[ $i ] ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize |
| 230 | $rows[] = "('$option_name', '$option_value', 'no')"; |
| 231 | } catch ( \Exception $e ) { |
| 232 | // Item cannot be serialized so skip. |
| 233 | continue; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | $rows_added = $wpdb->query( $query . implode( ',', $rows ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared, WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching |
| 238 | |
| 239 | return $rows_added; |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Return $max_count items from the queue, including their value string length. |
| 244 | * |
| 245 | * @param int $max_count How many items to fetch from the queue. |
| 246 | * |
| 247 | * @return object[]|null |
| 248 | */ |
| 249 | public function get_items_ids_with_size( $max_count ) { |
| 250 | global $wpdb; |
| 251 | |
| 252 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 253 | return $wpdb->get_results( |
| 254 | $wpdb->prepare( |
| 255 | "SELECT option_name AS id, LENGTH(option_value) AS value_size FROM $wpdb->options WHERE option_name LIKE %s ORDER BY option_name ASC LIMIT %d", |
| 256 | "jpsq_{$this->queue_id}-%", |
| 257 | $max_count |
| 258 | ), |
| 259 | OBJECT |
| 260 | ); |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Delete items with specific IDs from the queue. |
| 265 | * |
| 266 | * @param array $ids IDs of the items to remove from the queue. |
| 267 | * |
| 268 | * @return bool|int|\mysqli_result|resource|null |
| 269 | */ |
| 270 | public function delete_items_by_ids( $ids ) { |
| 271 | global $wpdb; |
| 272 | |
| 273 | if ( ! is_array( $ids ) || empty( $ids ) ) { |
| 274 | return false; |
| 275 | } |
| 276 | |
| 277 | // TODO check if it's working properly - no need to delete all options in the table if the params are not right |
| 278 | $ids_placeholders = implode( ', ', array_fill( 0, count( $ids ), '%s' ) ); |
| 279 | |
| 280 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery |
| 281 | return $wpdb->query( |
| 282 | $wpdb->prepare( |
| 283 | /** |
| 284 | * Ignoring the linting warning, as there's still no placeholder replacement for DB field name, |
| 285 | * in this case this is `$ids_placeholders`, as we're preparing them above and are a dynamic count. |
| 286 | */ |
| 287 | // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare |
| 288 | "DELETE FROM {$wpdb->options} WHERE option_name IN ( $ids_placeholders )", |
| 289 | $ids |
| 290 | ) |
| 291 | ); |
| 292 | } |
| 293 | } |