我正试图让promotheus通过一个定制的spring引导端点获取公开的度量。我在文件里有指标

# HELP cpu_usage_total The total amount of CPU.
# TYPE cpu_usage_total gauge.
cpu_usage_total 0.24950100481510162
# HELP memory_usage_total The total amount of MEMORY.
# TYPE memory_usage_total gauge.
memory_usage_total 30.0

我创建了一个restful端点来读取这个文件并在端口8080上公开它的内容。以下是我迄今为止尝试的：

@GetMapping(value = "/metrics")
    public void metrics(HttpServletResponse response) throws IOException {
        File file = new File("/var/log/logparsing");
        InputStreamResource resource = new InputStreamResource(new FileInputStream(file));
        MediaType mediaType = new MediaType("text", "plain", StandardCharsets.UTF_8);
        InputStream myStream = new FileInputStream(file);
        // Set the content type and attachment header.
        response.setContentType("text/plain; version=0.0.4;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        // Copy the stream to the response's output stream.
        IOUtils.copy(myStream, response.getOutputStream());
        response.flushBuffer();

我的promotheus.yaml配置文件：

global:
  scrape_interval:     15s # By default, scrape targets every 15 seconds.
  external_labels:
   monitor: 'codelab-monitor'
scrape_configs:
   - job_name: 'prometheus'
   scrape_interval: 5s
   metrics_path: '/metrics' 
   static_configs:
    - targets: ['logparsing:8080']

我从prometheus文档中了解到，服务器需要这种格式的数据。我尽我所能地尊重它，但普罗莫斯不接受。
任何帮助都将不胜感激，谢谢。ps：我不能使用prometheus的java客户端，它需要这样做。