public static function SetGlobalConf($conf)
{
self::$global_conf = $conf;
if (isset($conf['ZookeeperHost'])) {
Ak_Zookeeper::setHost($conf['ZookeeperHost']);
}
if (isset($conf['ZookeeperBackupDir'])) {
Ak_Zookeeper::setBackupDir($conf['ZookeeperBackupDir']);
}
if (isset($conf['ZookeeperDisabled']) && $conf['ZookeeperDisabled'] === true) {
Ak_Zookeeper::useBackupOnly(true);
}
}
protected function call_acm($group_key, $key, $sub_key = null)
{
$acm_zk_path = $this->conf['zk_path'] . '/acm';
$zk_expire = $this->conf['zk_expire'];
$acm_conf = Ak_Zookeeper::getCached($acm_zk_path, 2, $zk_expire, 'Ak_McClient::checkAcmConf');
if (!is_array($acm_conf)) {
Ak_Log::warning("acm zk conf formate error!");
return false;
}
for ($i = 1; $i <= $acm_conf['acm_idc_num']; ++$i) {
$server_name = "server{$i}";
if (!is_array($acm_conf['children'][$server_name])) {
Ak_Log::warning("acm {$server_name} not exist!");
continue;
}
$server_conf = $acm_conf['children'][$server_name];
$this->span_idc->registerResource(self::ACM_RESOURCE, $server_conf['idc'], $server_name);
}
$resources = $this->span_idc->getResource($this->conf['span_idc_strategy_index'], self::ACM_RESOURCE, $this->conf['curr_idc']);
if (count($resources) == 0) {
Ak_Log::warning("get resources is empty!");
return false;
}
foreach ($resources as $server_name) {
$acm_path = $this->conf['zk_path'] . "/acm/{$server_name}";
$aclient_conf = array('Source' => 'Galileo', 'Protocol' => 'Nshead', 'Scheduler' => 'Closest', 'GalileoConf' => array('Path' => $acm_path), 'ClosestConf' => array('AlwaysRetry' => true), 'NsheadConf' => array('ConnectTimeOut' => $this->conf['acm_connect_timeout'], 'WriteTimeOut' => $this->conf['acm_write_timeout'], 'ReadTimeOut' => $this->conf['acm_read_timeout']));
$client = new Ak_AClient();
$client->SetConf($aclient_conf);
$idc_list = array();
for ($i = 0; $i < $this->zk_conf['idc_num']; $i++) {
$idc_list[] = $i;
}
$data = array('command_no' => $this->zk_conf['delete_cmd'], 'pid' => $this->conf['pid'], 'group_key' => (string) $group_key, 'key' => (string) $key, 'idc_list' => $idc_list);
if ($sub_key !== null) {
$data['has_sub_key'] = 1;
$data['sub_key'] = $sub_key;
}
$input = array('body' => mc_pack_array2pack($data, PHP_MC_PACK_V2));
$output = $client->Call($input);
if ($output == null) {
Ak_Log::warning("aclient call acm [{$server_name}] failed");
} else {
$res = mc_pack_pack2array($output['body']);
if ($res['error_no'] !== 0) {
Ak_Log::warning("call acm [{$server_name}] output err_no is {$res['errno']}");
} else {
return true;
}
}
}
return false;
}
public function get_conf()
{
$this->zk_conf = Ak_Zookeeper::getCached($this->zk_path, 1, $this->zk_update_time, 'AClientGalileo::checkZkConf');
return $this->zk_conf;
}
/**
* @brief 此接口封装了Ak_McClient初始化的过程
*
* @return 初始化成功返回Ak_McClient对象实例，失败则返回false
* @retval object/boolean
* @author chenyijie
* @date 2012/09/27 20:53:48
**/
public function create()
{
$zkHost = array();
$zkhostFromConf = Bd_Conf::getConf('cacheproxy/AkCache/zkhost');
if ($zkhostFromConf === false) {
Bd_Log::warning('Get conf form cache.conf failed when create AkCacheClient');
return false;
}
//装配ip和port
foreach ($zkhostFromConf as $value) {
$content = $value['ip'] . ':' . $value['port'];
$zkHost[] = $content;
}
Ak_Zookeeper::setHost($zkHost);
Ak_AClient::SetGlobalConf(array('ZookeeperHost' => $zkHost));
//创建cache客户端实例
$keyArray = array('pid', 'zk_path', 'default_expire', 'curr_idc', 'delete_directly', 'delete_delay', 'connect_timeout', 'poll_timeout', 'send_timeout', 'recv_timeout', 'acm_connect_timeout', 'acm_read_timeout', 'acm_write_timeout');
$mcConf = array();
$confArray = Bd_Conf::getConf('cacheproxy/AkCache/mc_conf/');
//去除confArray中读取到的空项
foreach ($keyArray as $key) {
if (isset($confArray[$key]) && $confArray[$key] !== '') {
$mcConf[$key] = $confArray[$key];
}
}
if (empty($mcConf)) {
//错误号参见CacheProxyAbstract.php中的定义
Bd_Log::warning('Get conf form cache.conf failed when create AkCacheClient', 6, null);
return false;
}
//去除不需要进行string -> int类型转换的项
array_splice($keyArray, 0, 2);
array_splice($keyArray, 1, 1);
//记录需要进行string -> bool转换的项
$boolArray = array_splice($keyArray, 1, 2);
foreach ($keyArray as $key) {
if (array_key_exists($key, $mcConf)) {
$mcConf[$key] = intval($mcConf[$key]);
}
}
foreach ($boolArray as $key) {
if ($mcConf[$key] === 'true') {
$mcConf[$key] = true;
} else {
$mcConf[$key] = false;
}
}
/* 装配后的mcConf的具体示例
$mcConf = array(
'pid' => $pid,
'zk_path' => $zk_path,
'default_expire' => 86400,
'curr_idc' => 'tc',
'delete_directly' => true,
'delete_delay' => true,
'connect_timeout' => 10,
'poll_timeout' => 20,
'send_timeout' => 100,
'recv_timeout' => 500,
'acm_connect_timeout' => 30,
'acm_read_timeout' => 500,
'acm_write_timeout' => 100,
);
*/
$objMcClient = Ak_McClient::create($mcConf);
if (is_null($objMcClient)) {
Bd_Log::debug("create AkCacheClient failed", 2, $mcConf);
return false;
}
return $objMcClient;
}
public static function getCached($path, $depth = 0, $expire = 60, $user_def = null)
{
$zk_key = "Ak_Zookeeper." . $path . "." . $depth;
$zk_bak_key = $zk_key . ".bak";
if (!(self::$backup_dir === null)) {
AK_LocalCache::setDir(self::$backup_dir);
$zk_lock_dir = self::$backup_dir;
} else {
$zk_lock_dir = defined('IS_ODP') ? DATA_PATH . '/ak' : dirname(__FILE__) . '/var';
}
$res = Ak_LocalCache::get($zk_key);
if (is_array($res)) {
return $res;
}
if (!file_exists($zk_lock_dir)) {
mkdir($zk_lock_dir);
}
$zk_lock = $zk_lock_dir . '/zk_lock';
$fd = fopen($zk_lock, 'a+b');
if (!flock($fd, LOCK_EX)) {
Ak_Log::warning("zk lock failed");
fclose($fd);
return null;
}
$res = Ak_LocalCache::get($zk_key);
if (!is_array($res)) {
$bak = Ak_LocalCache::get($zk_bak_key);
if (!empty($bak) && is_array($bak)) {
Ak_LocalCache::set($zk_key, $bak, $expire);
} else {
$bak = null;
}
flock($fd, LOCK_UN);
if (self::$use_backup_only) {
$res = null;
} else {
// for null bak, add by cdz
if ($bak === null) {
Ak_Log::warning("local-cached file is empty, waiting to get from zk...");
$bak_zk_lock = $zk_lock_dir . '/' . 'bak_zk_lock';
$bak_fd = fopen($bak_zk_lock, 'a+b');
// non-block lock
if (!flock($bak_fd, LOCK_EX | LOCK_NB, $eWouldBlock) || $eWouldBlock) {
Ak_Log::warning("zk lock failed, path[{$path}], eWouldBlock[{$eWouldBlock}]");
fclose($bak_fd);
return null;
}
$res = Ak_LocalCache::get($zk_key);
if (!is_array($res)) {
$bak = Ak_LocalCache::get($zk_bak_key);
if (!empty($bak) && is_array($bak)) {
Ak_LocalCache::set($zk_key, $bak, $expire);
flock($bak_fd, LOCK_UN);
fclose($bak_fd);
} else {
$bak = null;
}
$res = self::get($path, $depth, self::$retry_times);
if (is_callable($user_def)) {
$res = call_user_func($user_def, $res);
}
}
} else {
// still need to get
$res = self::get($path, $depth, self::$retry_times);
if (is_callable($user_def)) {
$res = call_user_func($user_def, $res);
}
}
}
if (!empty($res) && is_array($res)) {
Ak_LocalCache::set($zk_bak_key, $res, -1);
Ak_LocalCache::set($zk_key, $res, $expire);
if ($bak === null) {
Ak_Log::warning("getting data from zk done, local-cached file created");
if (!self::$use_backup_only) {
flock($bak_fd, LOCK_UN);
fclose($bak_fd);
}
}
} else {
self::$zk = null;
if (empty($bak)) {
if (self::$use_backup_only) {
Ak_Log::warning("FATAL ERROR: zk is disabled and cached file is empty");
} else {
Ak_Log::warning("FATAL ERROR: get from zk failed and cached file is empty too, data[NULL]");
flock($bak_fd, LOCK_UN);
fclose($bak_fd);
}
fclose($fd);
return null;
}
if (!self::$use_backup_only) {
Ak_Log::warning("Using cached data[" . var_export($bak, true) . "] instead");
}
$res = $bak;
}
} else {
flock($fd, LOCK_UN);
}
fclose($fd);
return $res;
}
protected function _zkDeleteChildren($path)
{
return Ak_Zookeeper::deleteChildren($this->zk_path . $path);
}
