128 lines
4.6 KiB
PHP
128 lines
4.6 KiB
PHP
<?php
|
|
/**
|
|
* Table Definition for msn_waiting_message
|
|
*/
|
|
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
|
|
|
|
class Msn_waiting_message extends Managed_DataObject {
|
|
|
|
public $__table = 'msn_waiting_message'; // table name
|
|
public $id; // int primary_key not_null auto_increment
|
|
public $screenname; // varchar(255) not_null
|
|
public $message; // text not_null
|
|
public $created; // datetime() not_null
|
|
public $claimed; // datetime()
|
|
|
|
/**
|
|
* return table definition for DB_DataObject
|
|
*
|
|
* DB_DataObject needs to know something about the table to manipulate
|
|
* instances. This method provides all the DB_DataObject needs to know.
|
|
*
|
|
* @return array array of column definitions
|
|
*/
|
|
public function table() {
|
|
return array('id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
|
|
'screenname' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
|
|
'message' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
|
|
'created' => DB_DATAOBJECT_TIME + DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
|
|
'claimed' => DB_DATAOBJECT_TIME + DB_DATAOBJECT_STR);
|
|
}
|
|
|
|
/**
|
|
* return key definitions for DB_DataObject
|
|
*
|
|
* DB_DataObject needs to know about keys that the table has, since it
|
|
* won't appear in StatusNet's own keys list. In most cases, this will
|
|
* simply reference your keyTypes() function.
|
|
*
|
|
* @return array list of key field names
|
|
*/
|
|
public function keys() {
|
|
return array_keys($this->keyTypes());
|
|
}
|
|
|
|
/**
|
|
* return key definitions for Memcached_DataObject
|
|
*
|
|
* Our caching system uses the same key definitions, but uses a different
|
|
* method to get them. This key information is used to store and clear
|
|
* cached data, so be sure to list any key that will be used for static
|
|
* lookups.
|
|
*
|
|
* @return array associative array of key definitions, field name to type:
|
|
* 'K' for primary key: for compound keys, add an entry for each component;
|
|
* 'U' for unique keys: compound keys are not well supported here.
|
|
*/
|
|
public function keyTypes() {
|
|
return array('id' => 'K');
|
|
}
|
|
|
|
/**
|
|
* Magic formula for non-autoincrementing integer primary keys
|
|
*
|
|
* If a table has a single integer column as its primary key, DB_DataObject
|
|
* assumes that the column is auto-incrementing and makes a sequence table
|
|
* to do this incrementation. Since we don't need this for our class, we
|
|
* overload this method and return the magic formula that DB_DataObject needs.
|
|
*
|
|
* @return array magic three-false array that stops auto-incrementing.
|
|
*/
|
|
function sequenceKey() {
|
|
return array(false, false, false);
|
|
}
|
|
|
|
/**
|
|
* @param string $screenname screenname or array of screennames to pull from
|
|
* If not specified, checks all queues in the system.
|
|
*/
|
|
public static function top($screenname = null) {
|
|
$wm = new Msn_waiting_message();
|
|
if ($screenname) {
|
|
if (is_array($screenname)) {
|
|
// @fixme use safer escaping
|
|
$list = implode("','", array_map('addslashes', $screenname));
|
|
$wm->whereAdd("screenname in ('$list')");
|
|
} else {
|
|
$wm->screenname = $screenname;
|
|
}
|
|
}
|
|
$wm->orderBy('created');
|
|
$wm->whereAdd('claimed is null');
|
|
|
|
$wm->limit(1);
|
|
|
|
$cnt = $wm->find(true);
|
|
|
|
if ($cnt) {
|
|
// XXX: potential race condition
|
|
// can we force it to only update if claimed is still null
|
|
// (or old)?
|
|
common_log(LOG_INFO, 'claiming msn waiting message id = ' . $wm->id);
|
|
$orig = clone($wm);
|
|
$wm->claimed = common_sql_now();
|
|
$result = $wm->update($orig);
|
|
if ($result) {
|
|
common_log(LOG_INFO, 'claim succeeded.');
|
|
return $wm;
|
|
} else {
|
|
common_log(LOG_INFO, 'claim failed.');
|
|
}
|
|
}
|
|
$wm = null;
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Release a claimed item.
|
|
*/
|
|
public function releaseClaim() {
|
|
// DB_DataObject doesn't let us save nulls right now
|
|
$sql = sprintf("UPDATE msn_waiting_message SET claimed=NULL WHERE id=%d", $this->id);
|
|
$this->query($sql);
|
|
|
|
$this->claimed = null;
|
|
$this->encache();
|
|
}
|
|
}
|