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<?php
namespace jobd;
class Client {
const WORKER_PORT = 7080;
const MASTER_PORT = 7081;
const EOT = "\4";
protected $host;
protected $port;
protected $password;
protected $sock;
/**
* JobdClient constructor.
* @param int $port
* @param string $host
* @param string $password
* @throws \Exception
*/
public function __construct(int $port, string $host = '127.0.0.1', string $password = '') {
$this->port = $port;
$this->host = $host;
$this->password = $password;
$this->sock = fsockopen($this->host, $this->port);
if (!$this->sock)
throw new \Exception("Failed to connect to {$this->host}:{$this->port}");
}
/**
* @return ResponseMessage
* @throws \Exception
*/
public function ping() {
$this->send(new RequestMessage('ping'));
return $this->recv();
}
/**
* @param array $targets
* @return ResponseMessage
* @throws \Exception
*/
public function poke(array $targets) {
$this->send(new RequestMessage('poke', ['targets' => $targets]));
return $this->recv();
}
/**
* @return ResponseMessage
* @throws \Exception
*/
public function status() {
$this->send(new RequestMessage('status'));
return $this->recv();
}
/**
* @param array $targets
* @return ResponseMessage
* @throws \Exception
*/
public function poll(array $targets) {
$this->send(new RequestMessage('poll', ['targets' => $targets]));
return $this->recv();
}
/**
* @param int $id
* @return ResponseMessage
*/
public function runManual(int $id) {
$this->send(new RequestMessage('run-manual', ['id' => $id]));
return $this->recv();
}
/**
* @param RequestMessage $request
*/
public function send(RequestMessage $request) {
if ($this->password)
$request->setPassword($this->password);
$serialized = $request->serialize();
fwrite($this->sock, $serialized . self::EOT);
}
/**
* @return ResponseMessage
* @throws \Exception
*/
public function recv() {
$messages = [];
$buf = '';
while (!feof($this->sock)) {
$buf .= fread($this->sock, 1024);
$buflen = strlen($buf);
if ($buflen > 0 && $buf[$buflen-1] == self::EOT)
break;
}
$offset = 0;
$eot_pos = 0;
do {
$eot_pos = strpos($buf, self::EOT, $offset);
if ($eot_pos !== false) {
$message = substr($buf, $offset, $eot_pos);
$messages[] = $message;
$offset = $eot_pos + 1;
}
} while ($eot_pos !== false && $offset < $buflen-1);
if (empty($message))
throw new \Exception("Malformed response: no messages found. Response: {$buf}");
if (count($messages) > 1)
trigger_error(__METHOD__.": received more than one message");
$response = self::parseMessage($messages[0]);
if (!($response instanceof ResponseMessage))
throw new \Exception('Unexpected message type');
if ($error = $response->getError())
throw new \Exception('jobd error: '.$response->getError());
return $response;
}
/**
* @param string $raw_string
* @return RequestMessage|ResponseMessage
* @throws \Exception
*/
protected static function parseMessage(string $raw_string) {
$raw = json_decode($raw_string, true);
if (!is_array($raw) || count($raw) != 2)
throw new \Exception("Malformed message: {$raw_string}");
list($type, $data) = $raw;
switch ($type) {
case Message::REQUEST:
if (!$data || !is_array($data) || !isset($data['type']) || !is_string($data['type']))
throw new \Exception('Malformed REQUEST message');
$message = new RequestMessage($data['type'], $data['data'] ?? null);
if (isset($data['password']))
$message->setPassword($data['password']);
return $message;
case Message::RESPONSE:
if (!is_array($data) || count($data) < 2)
throw new \Exception('Malformed RESPONSE message');
$message = new ResponseMessage(...$data);
return $message;
default:
throw new \Exception("Malformed message: unexpected type {$type}");
}
}
/**
* @return bool
*/
public function close() {
return fclose($this->sock);
}
}
|
