| 1 | <?php |
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| 2 | class PMC_Cron_Store extends WP_Cron_Store { |
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| 3 | /** |
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| 4 | * Status enum for "complete" state |
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| 5 | */ |
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| 6 | const STATUS_COMPLETE = 'complete'; |
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| 7 | |
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| 8 | /** |
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| 9 | * Status enum for "processing" state. For future use. |
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| 10 | */ |
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| 11 | const STATUS_PROCESSING = 'processing'; |
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| 12 | |
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| 13 | /** |
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| 14 | * Status enum for "pending" state |
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| 15 | */ |
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| 16 | const STATUS_PENDING = 'pending'; |
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| 17 | |
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| 18 | /** |
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| 19 | * Array of pending cron jobs for time() + 10 minutes |
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| 20 | */ |
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| 21 | protected $_cron_array = array(); |
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| 22 | |
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| 23 | /** |
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| 24 | * Internal cache of next scheduled events, since we're no longer using the |
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| 25 | * options table and WP object cache |
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| 26 | */ |
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| 27 | protected $_next_scheduled_events = array(); |
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| 28 | |
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| 29 | /** |
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| 30 | * Constructor sets up $this->_cron_array |
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| 31 | * |
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| 32 | * @since ? |
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| 33 | */ |
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| 34 | public function __construct() { |
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| 35 | // Set up the cron array |
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| 36 | $this->_setup_cron_array(); |
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| 37 | } |
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| 38 | |
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| 39 | /** |
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| 40 | * Delete any completed cron jobs older than one day on shutdown |
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| 41 | * |
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| 42 | * @since ? |
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| 43 | */ |
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| 44 | public function __destruct() { |
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| 45 | global $wpdb; |
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| 46 | |
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| 47 | $wpdb->query("DELETE FROM `" . $wpdb->prefix . "cron` WHERE `status`='" . self::STATUS_COMPLETE . "' AND `timestamp`<" . strtotime('-1 day')); |
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| 48 | |
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| 49 | } |
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| 50 | |
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| 51 | /** |
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| 52 | * Marks the event as completed and removes it from the current instance of |
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| 53 | * $this->_cron_array |
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| 54 | * |
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| 55 | * @since ? |
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| 56 | * |
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| 57 | * @param int $timestamp |
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| 58 | * @param string $hook |
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| 59 | * @param array $args |
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| 60 | */ |
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| 61 | public function complete_event( $timestamp, $hook, $args ) { |
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| 62 | global $wpdb; |
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| 63 | |
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| 64 | $args = serialize($args); |
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| 65 | $key = md5($args); |
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| 66 | $id = $this->_get_cron_id( $timestamp, $hook, $args, $key ); |
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| 67 | |
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| 68 | unset( $this->_cron_array[$timestamp][$hook][$key] ); |
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| 69 | |
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| 70 | if ( empty($this->_cron_array[$timestamp][$hook]) ) |
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| 71 | unset( $this->_cron_array[$timestamp][$hook] ); |
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| 72 | |
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| 73 | if ( empty($this->_cron_array[$timestamp]) ) |
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| 74 | unset( $this->_cron_array[$timestamp] ); |
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| 75 | |
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| 76 | $wpdb->query("UPDATE `" . $wpdb->prefix . "cron` SET `status`='" . self::STATUS_COMPLETE . "' WHERE `id`='" . $id . "' LIMIT 1"); |
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| 77 | } |
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| 78 | |
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| 79 | /** |
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| 80 | * Searches for a scheduled event |
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| 81 | * |
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| 82 | * @since ? |
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| 83 | * |
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| 84 | * @param string $hook |
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| 85 | * @param int $timestamp |
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| 86 | * @param array $args |
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| 87 | * |
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| 88 | * @return obj|false $event object or false if it doesn't exist |
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| 89 | */ |
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| 90 | public function get_event( $hook, $timestamp, $args = array() ) { |
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| 91 | global $wpdb; |
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| 92 | |
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| 93 | $key = md5(serialize($args)); |
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| 94 | |
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| 95 | // Check if the event exists in the current cron array |
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| 96 | if ( isset($this->_cron_array[$timestamp][$hook][$key]) ) { |
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| 97 | return (object) array( |
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| 98 | 'hook' => $hook, |
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| 99 | 'args' => $args, |
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| 100 | 'timestamp' => $timestamp, |
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| 101 | 'schedule' => $this->_cron_array[$timestamp][$hook][$key]['schedule'], |
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| 102 | 'interval' => $this->_cron_array[$timestamp][$hook][$key]['interval'] |
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| 103 | ); |
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| 104 | } |
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| 105 | |
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| 106 | // If the timestamp is empty or "next", see if we have it in the current cron array |
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| 107 | if ( empty($timestamp) || 'next' == $timestamp ) { |
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| 108 | if ( isset($this->_next_scheduled_events[$hook][$key]) ) |
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| 109 | return $this->_next_scheduled_events[$hook][$key]; |
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| 110 | |
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| 111 | foreach ( $this->_cron_array as $cron_timestamp => $cron ) { |
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| 112 | if ( isset( $cron[$hook][$key] ) ) { |
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| 113 | $this->_next_scheduled_events[$hook][$key] = (object) array( |
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| 114 | 'hook' => $hook, |
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| 115 | 'args' => $args, |
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| 116 | 'timestamp' => $cron_timestamp, |
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| 117 | 'schedule' => $cron[$hook][$key]['schedule'], |
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| 118 | 'interval' => $cron[$hook][$key]['interval'] |
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| 119 | ); |
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| 120 | |
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| 121 | return $this->_next_scheduled_events[$hook][$key]; |
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| 122 | } |
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| 123 | } |
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| 124 | |
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| 125 | } |
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| 126 | |
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| 127 | // Query the event from the database |
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| 128 | $event = $wpdb->get_row("SELECT `hook`, `args`, `timestamp`, `schedule`, `interval` FROM `" . $wpdb->prefix . "cron` WHERE `hook`='" . $hook . "' AND `key`='" . $key . "' AND `status`!='" . self::STATUS_COMPLETE . "' ORDER BY `timestamp` ASC LIMIT 1"); |
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| 129 | |
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| 130 | if ( $event ) { |
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| 131 | $event->args = unserialize($event->args); |
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| 132 | |
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| 133 | // Add the event to $this->_next_scheduled_events so we won't have to query it next time |
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| 134 | if ( empty($timestamp) || 'next' == $timestamp ) |
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| 135 | $this->_next_scheduled_events[$hook][$key] = $event; |
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| 136 | |
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| 137 | return $event; |
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| 138 | } |
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| 139 | |
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| 140 | return false; |
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| 141 | } |
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| 142 | |
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| 143 | /** |
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| 144 | * Returns an array of all pending jobs within the next 10 minutes |
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| 145 | * |
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| 146 | * @since ? |
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| 147 | * |
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| 148 | * @param array $args Unused |
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| 149 | * |
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| 150 | * @return array |
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| 151 | */ |
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| 152 | public function get_events( $args = array() ) { |
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| 153 | return $this->_get_cron_array(); |
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| 154 | } |
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| 155 | |
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| 156 | /** |
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| 157 | * Inserts a new event |
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| 158 | * |
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| 159 | * @since ? |
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| 160 | * |
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| 161 | * @param int $timestamp |
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| 162 | * @param string $hook |
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| 163 | * @param array $args |
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| 164 | * @param null|string $recurrence |
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| 165 | * @param null|int $interval |
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| 166 | */ |
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| 167 | public function insert_event( $timestamp, $hook, $args, $recurrence = null, $interval = null ) { |
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| 168 | $key = md5(serialize($args)); |
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| 169 | |
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| 170 | $this->_cron_array[$timestamp][$hook][$key] = array( |
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| 171 | 'schedule' => $recurrence, |
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| 172 | 'args' => $args, |
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| 173 | 'interval' => $interval |
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| 174 | ); |
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| 175 | uksort( $this->_cron_array, 'strnatcasecmp' ); |
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| 176 | $this->_set_cron_array(); |
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| 177 | } |
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| 178 | |
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| 179 | /** |
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| 180 | * Retrieve cron info array option. |
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| 181 | * |
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| 182 | * @since 2.1.0 |
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| 183 | * |
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| 184 | * @return array CRON info array. |
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| 185 | */ |
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| 186 | protected function _get_cron_array() { |
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| 187 | return $this->_setup_cron_array(); |
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| 188 | } |
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| 189 | |
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| 190 | /** |
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| 191 | * Sets up the cron array with data. |
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| 192 | * |
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| 193 | * @since ? |
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| 194 | * |
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| 195 | * @param array $crons Optional, default WP_Cron_Store passes this for legacy reasons |
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| 196 | * |
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| 197 | * @return array $this->_cron_array |
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| 198 | */ |
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| 199 | protected function _setup_cron_array( $crons = array() ) { |
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| 200 | global $wpdb; |
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| 201 | |
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| 202 | if ( !empty($this->_cron_array) ) { |
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| 203 | return $this->_cron_array; |
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| 204 | } |
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| 205 | |
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| 206 | $old_crons = get_option('cron', array()); |
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| 207 | if ( !empty($old_crons) ) |
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| 208 | $this->_upgrade_cron_array($old_crons); |
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| 209 | |
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| 210 | // Get jobs that need to run + jobs for 10 minutes in the future (for wp_schedule_single_event()) |
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| 211 | $crons = $wpdb->get_results("SELECT `key`, `hook`, `timestamp`, `schedule`, `args`, `interval` FROM `" . $wpdb->prefix . "cron` WHERE `status`='" . self::STATUS_PENDING . "' AND `timestamp`<=" . strtotime('+10 minutes') . " ORDER BY `timestamp` ASC"); |
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| 212 | if ( $crons ) { |
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| 213 | foreach ( $crons as $cron ) { |
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| 214 | $this->_cron_array[$cron->timestamp][$cron->hook][$cron->key] = array( |
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| 215 | 'schedule' => $cron->schedule, |
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| 216 | 'args' => unserialize($cron->args), |
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| 217 | 'interval' => $cron->interval |
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| 218 | ); |
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| 219 | } |
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| 220 | } |
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| 221 | |
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| 222 | return $this->_cron_array; |
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| 223 | } |
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| 224 | |
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| 225 | /** |
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| 226 | * Updates the CRON option with the new CRON array. |
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| 227 | * |
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| 228 | * @since 2.1.0 |
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| 229 | * |
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| 230 | * @param array $crons Cron info array from {@link _get_cron_array()}. |
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| 231 | */ |
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| 232 | protected function _set_cron_array( $crons = array() ) { |
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| 233 | global $wpdb; |
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| 234 | |
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| 235 | if ( empty($crons) ) { |
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| 236 | $crons = $this->_cron_array; |
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| 237 | } |
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| 238 | |
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| 239 | $crons['version'] = 3; |
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| 240 | |
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| 241 | foreach ( $crons as $timestamp => $hooks ) { |
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| 242 | if ( 'version' === $timestamp ) { |
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| 243 | continue; |
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| 244 | } |
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| 245 | foreach ( $hooks as $hook => $args ) { |
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| 246 | foreach ( $args as $key => $params ) { |
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| 247 | // @todo use wpdb prepare, insert |
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| 248 | $id = $this->_get_cron_id( $timestamp, $hook, $params['args'] ); |
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| 249 | |
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| 250 | $result = $wpdb->query("INSERT INTO `" . $wpdb->prefix . "cron` SET `id`='" . $id . "', `key`='" . $key . "', `hook`='" . $hook . "', `timestamp`='" . $timestamp . "', `schedule`='" . $params['schedule'] . "', `args`='" . serialize($params['args']) . "', `interval`='" . $params['interval'] . "'"); |
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| 251 | |
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| 252 | if ( !$result ) { |
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| 253 | error_log($wpdb->last_error); |
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| 254 | } |
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| 255 | } |
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| 256 | } |
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| 257 | } |
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| 258 | } |
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| 259 | |
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| 260 | /** |
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| 261 | * Generates an id for storing the cron in the database |
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| 262 | * |
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| 263 | * This method is private because nothing should override how the cron id's |
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| 264 | * are generated |
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| 265 | * |
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| 266 | * @since ? |
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| 267 | * |
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| 268 | * @param int $timestamp |
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| 269 | * @param string $hook |
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| 270 | * @param array $args |
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| 271 | * @param null|string $key Key made from md5 hash of serialized $args array |
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| 272 | * |
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| 273 | * @return string |
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| 274 | */ |
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| 275 | private function _get_cron_id( $timestamp, $hook, $args = array(), $key = null ) { |
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| 276 | $args = (is_array($args)) ? serialize($args) : $args; |
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| 277 | $key = (is_null($key)) ? md5($args) : $key; |
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| 278 | return md5($key . $timestamp . $hook . $args); |
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| 279 | } |
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| 280 | |
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| 281 | /** |
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| 282 | * Upgrade a Cron info array. |
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| 283 | * |
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| 284 | * This function upgrades the Cron info array to version 3. |
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| 285 | * |
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| 286 | * @since 2.1.0 |
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| 287 | * |
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| 288 | * @param array $cron Cron info array from {@link _get_cron_array()}. |
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| 289 | * @return array An upgraded Cron info array. |
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| 290 | */ |
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| 291 | protected function _upgrade_cron_array($crons) { |
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| 292 | global $wpdb; |
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| 293 | |
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| 294 | if ( isset($crons['version']) && 3 == $crons['version']) |
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| 295 | return $crons; |
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| 296 | |
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| 297 | unset($crons['version']); |
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| 298 | if ( $wpdb->get_var("SHOW TABLES LIKE '" . $wpdb->prefix . "cron'") != $wpdb->prefix . 'cron' ) { |
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| 299 | $wpdb->query("CREATE TABLE `" . $wpdb->prefix . "cron` ( |
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| 300 | `id` char(32) NOT NULL, |
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| 301 | `key` char(32) NOT NULL, |
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| 302 | `hook` varchar(255) NOT NULL, |
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| 303 | `timestamp` int(11) NOT NULL, |
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| 304 | `schedule` varchar(32) NOT NULL, |
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| 305 | `args` text NOT NULL, |
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| 306 | `interval` int(11) NOT NULL, |
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| 307 | `status` enum('complete','processing','pending') NOT NULL DEFAULT 'pending', |
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| 308 | `last_modified` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, |
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| 309 | PRIMARY KEY (`id`), |
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| 310 | KEY `timestamp` (`timestamp`), |
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| 311 | KEY `status` (`status`), |
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| 312 | KEY `hook` (`hook`), |
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| 313 | KEY `key` (`key`) |
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| 314 | ) DEFAULT CHARSET=utf8;"); |
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| 315 | } |
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| 316 | |
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| 317 | foreach ( (array) $crons as $timestamp => $hooks) { |
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| 318 | foreach ( (array) $hooks as $hook => $args ) { |
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| 319 | $args = array_pop($args); |
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| 320 | $key = md5(serialize($args['args'])); |
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| 321 | $this->_cron_array[$timestamp][$hook][$key] = $args; |
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| 322 | } |
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| 323 | } |
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| 324 | |
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| 325 | $this->_cron_array['version'] = 3; |
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| 326 | delete_option('cron'); |
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| 327 | } |
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| 328 | } |
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| 329 | |
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| 330 | |
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| 331 | if ( !isset( $wp_cron_store ) ) |
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| 332 | $wp_cron_store = new PMC_Cron_Store; |
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