[GitHub] [incubator-doris] chaoyli opened a new issue #3636: Add a JSON format for existing metrics like this

[GitBox <gi...@apache.org>]

chaoyli opened a new issue #3636:
URL: https://github.com/apache/incubator-doris/issues/3636


   The format is like this.
   ```
   {
       "tags":
       {
           "metric":"thread_pool",
           "name":"thrift-server-pool",
           "type":"active_thread_num"
       },
       "unit":"number",
       "value":3
   }
   ```
   I  will add a new JsonMetricVisitor to handle the convertion.
   It's not to modify existing PrometheusMetricVisitor and SimpleCoreMetricVisitor.
   Also I add a unit item to indicate the metric better.
   ```
   public enum MetricUnit {
       NANOSECONDS,
       MICROSECONDS,
       MILLISECONDS,
       SECONDS,
       BYTES,
       ROWS,
       NUMBER,
       PERCENT,
       NOUNIT
   };
   ```


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