public static function getInstance()
{
if (self::$instance === NULL) {
self::$instance = new Vera_Cache();
}
return self::$instance;
}
/**
* 执行签到
* @param string $act 活动token
* @param string $user openId
* @return int 签到排名，失败返回false
*/
public static function checkin($act, $user, $nickname)
{
$item = array('openid' => $user, 'time' => date("Y-m-d H:i:s", time()), 'nickname' => $nickname);
$cache = Vera_Cache::getInstance();
$key = 'rollcall_' . $act . '_list';
$rank = false;
do {
$list = $cache->get($key, NULL, $cas);
//使用Memcached特性cas，保证高并发时的准确性
if ($cache->getResultCode() == Memcached::RES_NOTFOUND) {
if ($list = Library_File::load($act)) {
if (!($rank = self::getRank($list, $user))) {
$list[] = $item;
$rank = count($list);
}
$newList = $list;
} else {
$newList = array($item);
//两层Array
$rank = 1;
}
$cache->add($key, $newList, 86400);
//原子性的插入，签到记录的缓存保存二十四小时
} else {
if (!($rank = self::getRank($list, $user))) {
$list[] = $item;
$cache->cas($cas, $key, $list);
$rank = count($list);
}
}
} while ($cache->getResultCode() != Memcached::RES_SUCCESS);
return $rank;
}
/**
* 扫码送网薪接口
* @param string $num 厦大学号
* @param int $award 发放网薪额度
* @param string $act 扫码活动md5
* @param string $end 扫码活动结束时间
* @return string 网薪发放情况
* @author Nili
*/
public static function pay($num, $award, $act, $end)
{
$yibanInfo = Data_Db::getYibanInfoByXmuNum($num);
$key = 'rollcall_' . $act . '_award' . $num;
$cache = Vera_Cache::getInstance();
if (!empty($cache->get($key))) {
return '您已在该活动获得过网薪';
}
if (!$yibanInfo['yiban_islinked']) {
return '未绑定易班身份，无法获得网薪';
}
if ($yibanInfo['expire_time'] < date('Y-m-d H:i:s')) {
return '易班身份已过期，无法获得网薪';
}
Vera_Autoload::changeApp('yiban');
$ret = Data_Yiban::awardSalary($yibanInfo['yiban_uid'], $yibanInfo['access_token'], $award);
Vera_Autoload::reverseApp();
if ($ret) {
$cache->set($key, 1, $end);
return "{$award}网薪已发往您的账户";
} else {
return '';
//网薪发放失败
}
}
public function run()
{
$acts = self::getActs();
$cache = Vera_Cache::getInstance();
foreach ($acts as $act) {
$key = 'rollcall_' . $act['md5'] . '_list';
if ($list = $cache->get($key)) {
Library_File::write($act['md5'], $list);
}
}
return true;
}
/**
* 获取 access_token
* @param string $appId appID
* @param string $appSecret appSecret
* @return string access_token
*/
public static function getJsTicket($appId, $appSecret)
{
$key = 'wechat_jsapi_ticket';
$cache = Vera_Cache::getInstance();
$ret = $cache->get($key);
if ($cache->getResultCode() == Memcached::RES_SUCCESS) {
return $ret;
}
$accessToken = self::getAccessToken($appId, $appSecret);
$api = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=%s&type=jsapi";
$url = sprintf($api, $accessToken);
$handle = curl_init();
$options = array(CURLOPT_URL => $url, CURLOPT_HEADER => 0, CURLOPT_RETURNTRANSFER => 1);
curl_setopt_array($handle, $options);
$content = curl_exec($handle);
if (curl_errno($handle)) {
//检查是否有误
return false;
}
curl_close($handle);
$content = json_decode($content, true);
$cache->set($key, $content['ticket'], $content['expires_in'] - 60);
//保险起见减去60秒
return $content['ticket'];
}
public function addUserToPushList($openid, $content, $time)
{
$cache = Vera_Cache::getInstance();
$key = 'wechat_push_list';
//单用户推送列表
}
/**
* 插入和修改活动信息
* @param int $owner 所有者学工号
* @param string $name 活动名称
* @param datatime $start 活动开始时间
* @param datatime $end 活动结束时间
* @param string $extra 附加信息
* @param string $md5 活动token
* @return int 影响的行数
*/
public static function setAct($owner, $name, $start, $end, $extra = '', $md5 = NULL)
{
if ($md5 == NULL) {
//如果需要修改活动，务必携带活动token作为md5
$md5 = md5($owner . $name . $start . $end);
}
$update = array('owner' => $owner, 'name' => $name, 'startTime' => $start, 'endTime' => $end, 'extra' => $extra);
$insert = array_merge($update, array('md5' => $md5));
$cache = Vera_Cache::getInstance();
$key = 'rollcall_' . $md5 . '_info';
$cache->set($key, $update, strtotime($update['endTime']) + 3600);
//活动详情的缓存多保留一小时
//利用MySQL特性 ON DUPLICATE KEY UPDATE，当违反md5的unique时，使用update
//保证md5唯一并且自始至终都不变
return $db->insert('rollcall_Board', $insert, NULL, $update);
}
