我使用这个类,它跟踪哪些作业在哪些服务器上工作。还没有完全测试,现在才写。我已经粘贴了一个经过编辑的版本,因此可能存在拼写错误或类似问题,但似乎可以解决问题。
<?
class MyGearmanClient {
static $server = "server1,server2,server3";
static $server_array = false;
static $workingServers = false;
static $gmclient = false;
static $timeout = 5000;
static $defaultTimeout = 5000;
static function randomServer() {
return self::$server_array[rand(0, count(self::$server_array) -1)];
}
static function getServer($job = false) {
if (self::$server_array == false) {
self::$server_array = explode(",", self::$server);
self::$workingServers = array();
}
$serverList = array();
if ($job) {
if (array_key_exists($job, self::$workingServers)) {
foreach (self::$server_array as $server) {
if (array_key_exists($server, self::$workingServers[$job])) {
if (self::$workingServers[$job][$server]) {
$serverList[] = $server;
}
} else {
$serverList[] = $server;
}
}
if (count($serverList) == 0) {
# All servers have failed, need to insert all the servers again and retry.
$serverList = self::$workingServers[$job] = self::$server_array;
}
return $serverList[rand(0, count($serverList) - 1)];
} else {
return self::randomServer();
}
} else {
return self::randomServer();
}
}
static function serverWorked($server, $job) {
self::$workingServers[$job][$server] = $server;
}
static function serverFailed($server, $job) {
self::$workingServers[$job][$server] = false;
}
static function Connect($server = false, $job = false) {
if ($server) {
self::$server = self::getServer();
}
self::$gmclient= new GearmanClient();
self::$gmclient->setTimeout(self::$timeout);
# add the default job server
self::$gmclient->addServer($server = self::getServer($job));
return $server;
}
static function Destroy() {
self::$gmclient = false;
}
static function Client($name, $vars, $timeout = false) {
if (is_int($timeout)) {
self::$timeout = $timeout;
} else {
self::$timeout = self::$defaultTimeout;
}
do {
$server = self::Connect(false, $name);
$value = self::$gmclient->do($name, $vars);
$return_code = self::$gmclient->returnCode();
if (!$value) {
$error_message = self::$gmclient->error();
if ($return_code == 47) {
self::serverFailed($server, $name);
if (count(self::$server_array) > 1) {
// ADDED SINGLE SERVER LOOP AVOIDANCE // echo "Timeout on server $server, trying another server...\n";
continue;
} else {
return false;
}
}
echo "ERR: $error_message ($return_code)\n";
}
# printf("Worker has returned\n");
$short_value = substr($value, 0, 80);
switch ($return_code)
{
case GEARMAN_WORK_DATA:
echo "DATA: $short_value\n";
break;
case GEARMAN_SUCCESS:
self::serverWorked($server, $name);
break;
case GEARMAN_WORK_STATUS:
list($numerator, $denominator)= self::$gmclient->doStatus();
echo "Status: $numerator/$denominator\n";
break;
case GEARMAN_TIMEOUT:
// self::Connect();
// Fall through
default:
echo "ERR: $error_message " . self::$gmclient->error() . " ($return_code)\n";
break;
}
}
while($return_code != GEARMAN_SUCCESS);
$rv = unserialize($value);
return $rv["rv"];
}
}
# Example usage:
# $rv = MyGearmanClient::Client("Function", $args);
?>