private function onWritable()
{
$flush = \pg_flush($this->db);
if ($flush) {
// Write was fully flushed; we're finished and can disable the watcher.
\Amp\disable($this->writeWatcher);
return;
}
if ($flush === FALSE) {
$this->failCurrentOperation();
}
}
/**
* Connection constructor.
*
* @param resource $handle PostgreSQL connection handle.
* @param resource $socket PostgreSQL connection stream socket.
*/
public function __construct($handle, $socket)
{
$this->handle = $handle;
$this->poll = Loop\poll($socket, static function ($resource, bool $expired, Io $poll) use($handle) {
/** @var \Icicle\Awaitable\Delayed $delayed */
$delayed = $poll->getData();
if (!\pg_consume_input($handle)) {
$delayed->reject(new FailureException(\pg_last_error($handle)));
return;
}
if (!\pg_connection_busy($handle)) {
$delayed->resolve(\pg_get_result($handle));
return;
}
$poll->listen();
// Reading not done, listen again.
});
$this->await = Loop\await($socket, static function ($resource, bool $expired, Io $await) use($handle) {
$flush = \pg_flush($handle);
if (0 === $flush) {
$await->listen();
// Not finished sending data, listen again.
return;
}
if (false === $flush) {
/** @var \Icicle\Awaitable\Delayed $delayed */
$delayed = $await->getData();
$delayed->reject(new FailureException(\pg_last_error($handle)));
}
});
$this->onCancelled = static function () use($handle) {
\pg_cancel_query($handle);
};
$this->executeCallback = function (string $name, array $params) : \Generator {
return $this->createResult(yield from $this->send('pg_send_execute', $name, $params));
};
}
