/**
* Starts the server.
*/
public function run()
{
$this->redis_server->del($this->message_queue);
$timeout = 0;
while (1) {
# Pop a message from the queue.
# Decode the message.
# Check that the function exists.
list($message_queue, $message) = $this->redis_server->blpop($this->message_queue, $timeout);
assert($message_queue == $this->message_queue);
debug_print("RPC Request: {$message}");
$rpc_request = json_decode($message);
$response_queue = $rpc_request->response_queue;
$function_call = FunctionCall::from_object($rpc_request->function_call);
if (!method_exists($this->local_object, $function_call->name)) {
$rpc_response = array('exception' => 'method "' . $function_call->name . '" does not exist');
} else {
$code = 'return $this->local_object->' . $function_call->as_php_code() . ';';
debug_print($code);
try {
$return_value = eval($code);
$rpc_response = array('return_value' => $return_value);
} catch (Exception $e) {
$rpc_response = array('exception' => $e->getMessage());
}
}
$message = json_encode($rpc_response);
debug_print("RPC Response: {$message}");
$this->redis_server->rpush($response_queue, $message);
}
}
public function __construct(Node $input, string $name, array $args)
{
parent::__construct($name, $args);
$this->input = $input;
}