protected function conduct(InputInterface $input, OutputInterface $output)
{
// Prepare the progress bar.
$progress = new ProgressBar($output, self::STOCKS_TO_PURCHASE);
$root = $this;
// Get a quote for the stock.
$output->write('Getting asking price for the stock... ');
$quote = $this->stock()->quote();
if (!$quote || !$quote->last) {
$output->writeln('<error>Failed.</error>');
exit;
}
$target_price = $quote->last;
$output->writeln('<info>$' . $target_price / 100 . '</info>');
// Prepare the variables.
$stocks_left = self::STOCKS_TO_PURCHASE;
$pending_order = false;
$last_activity = 0;
$cooldown = 0;
$output->writeln('Waiting for quote to drop below threshold...');
// Start the progress bar.
$progress->start();
// Prepare the order tracker.
$tracker = new OrderTracker();
// Setup the events.
$tracker->on('executed', function (Execution $execution) use(&$stocks_left, &$last_activity, $progress) {
$stocks_left -= $execution->filled;
$last_activity = microtime(true);
$progress->setProgress(self::STOCKS_TO_PURCHASE - $stocks_left);
$progress->setMessage('<info>+' . $execution->filled . '</info>');
});
$tracker->on('complete', function (Order $order) use($progress, &$last_activity, &$pending_order) {
$pending_order = false;
$last_activity = microtime(true);
$progress->setMessage('<info>Complete (' . $order->id . ')</info>');
});
// Get the websockets communicator.
$communicator = $this->stockfighter->getWebSocketCommunicator();
$quotes_socket = $communicator->quotes($this->account, $this->venue, $this->stock);
$executions_socket = $communicator->executions($this->account, $this->venue, $this->stock);
// Attach the quotes websocket events.
$quotes_socket->on('message', function (WebSocket $client, Quote $quote) use($stocks_left, &$last_activity, &$cooldown, &$pending_order, $target_price, $progress, $tracker, $root) {
if ($stocks_left <= 0) {
$client->close();
return;
// Cancel if we don't have any more stocks to purchase.
}
if ($pending_order) {
return;
}
// Skip this quote if we have an unfilled order.
if (microtime(true) - $last_activity <= $cooldown) {
return;
}
// Don't order if we're not past the cooldown.
$cooldown = rand(self::COOLDOWN_MIN, self::COOLDOWN_MAX);
$last_activity = microtime(true);
// Don't process this quote if it's too expensive.
if ($quote->last > $target_price + self::LAST_THRESHOLD) {
return;
}
// Get the number of stocks to purchase.
$per_purchase = rand(self::PURCHASE_MIN, self::PURCHASE_MAX);
$to_purchase = $stocks_left > $per_purchase ? $per_purchase : $stocks_left;
if ($to_purchase <= 0) {
$client->close();
return;
// Close if we don't have any more stocks to purchase.
}
// Purchase the stock.
$root->orderAsync($target_price, $to_purchase)->then(function (Order $order) use($tracker, $to_purchase, $progress, &$pending_order) {
$pending_order = true;
$progress->setMessage('Purchasing ' . $to_purchase . ' @ $' . $order->price / 100);
$tracker->track($order);
// Track the order.
}, function () use($progress) {
$progress->setMessage('<comment>purchase fail</comment>');
});
});
$quotes_socket->on('error', function () use($progress) {
$progress->setMessage('<comment>fail</comment>');
});
// Attach to the executions websocket events.
$executions_socket->on('message', function (WebSocket $client, Execution $execution) use($stocks_left, $tracker) {
if ($stocks_left <= 0) {
$client->close();
return;
}
$tracker->executed($execution);
});
$executions_socket->on('error', function () use($progress) {
$progress->setMessage('<comment>executions fail</comment>');
});
// Start the sockets.
$executions_socket->connect();
$quotes_socket->connect();
}
protected function receiveExecution(Execution $execution)
{
$this->tracker->executed($execution);
}