dosubot[bot] commented on issue #2600:
URL:
https://github.com/apache/incubator-hugegraph/issues/2600#issuecomment-2248067275
<!-- Answer -->
The reason you are receiving an empty JSON object when calling the
`/metrics` endpoint is that the `index()` method mapped to this endpoint
returns an empty `HashMap`:
```java
@GetMapping
public Map<String, String> index() {
return new HashMap<>();
}
```
This method is designed to return an empty map, which translates to an empty
JSON object in the response. In contrast, the `/metrics/drive` endpoint calls
the `drive()` method, which returns the actual drive metrics data:
```java
@GetMapping("drive")
public Map<String, Map<String, Object>> drive() {
return this.driveMetrics.metrics();
}
```
This method returns the metrics collected by the `DriveMetrics` class, which
is why you see data when calling `/metrics/drive`
<sup>[[1]](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-store/hg-store-node/src/main/java/org/apache/hugegraph/store/node/controller/HgStoreMetricsController.java)</sup>.
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