protected function flushMessages($messages)
{
if (!$this->initialized) {
$this->initialize();
}
$events = [];
foreach ($messages as $message) {
$events[] = ['message' => $message['formatted'], 'timestamp' => round(microtime(true) * 1000)];
}
$data = ['logGroupName' => $this->logGroupName, 'logStreamName' => $this->logStreamName, 'logEvents' => $events];
if ($this->uploadSequenceToken) {
$data['sequenceToken'] = $this->uploadSequenceToken;
}
// put log to AWS
$response = $this->client->putLogEvents($data);
// update sequence token
$this->uploadSequenceToken = $response->get('nextSequenceToken');
}
