来自Lambda处理程序的Micronaut数据库凭证更新

Question

在初始化容器之后（从处理程序功能中），是否有一种方法可以更新数据库凭证？ 我必须从AWS Secrets Manager中读取数据库密码并更新数据源。但是，当我从StreamLambdaHandler构造函数执行此操作时，它超出了初始化的时间限制（〜10s）。

public class StreamLambdaHandler implements RequestStreamHandler {
    private static Logger log = LoggerFactory.getLogger(Application.class);
    private static MicronautLambdaContainerHandler handler; // <1>

    DBCredentialService dbCredentialService;
    ApplicationContextBuilder builder;

    public StreamLambdaHandler() {
        try {
            log.info("********ContainerInitialization**************");
            this.dbCredentialService = new DBCredentialService();
            // Get database credential properties from secrets manager
            Map<String, Object> props = this.dbCredentialService.getDbCredential();
            // Update the datasource properties
            // E.g. "datasources.default.password", "sample_password"
            builder = ApplicationContext.build().properties(props);
            handler = new MicronautLambdaContainerHandler(builder);
        } catch (Exception e) {
            log.info("ContainerInitializationException " + e.getMessage());
            // if we fail here. We re-throw the exception to force another cold start
            e.printStackTrace();
            throw new RuntimeException("Could not initialize Micronaut", e);
        }
    }

    @Override
    public void handleRequest(InputStream inputStream, OutputStream outputStream, Context context)
            throws IOException {
        this.log.info("Starting handler.proxyStream");

        handler.proxyStream(inputStream, outputStream, context); // <2>
    }
}