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Expose certain validator_monitor metrics to the HTTP API (#3760)

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## Issue Addressed

#3724 

## Proposed Changes

Exposes certain `validator_monitor` as an endpoint on the HTTP API. Will only return metrics for validators which are actively being monitored.

### Usage

```bash
curl -X GET "http://localhost:5052/lighthouse/ui/validator_metrics" -H "accept: application/json" | jq
```

```json
{
  "data": {
    "validators": {
      "12345": {
        "attestation_hits": 10,
        "attestation_misses": 0,
        "attestation_hit_percentage": 100,
        "attestation_head_hits": 10,
        "attestation_head_misses": 0,
        "attestation_head_hit_percentage": 100,
        "attestation_target_hits": 5,
        "attestation_target_misses": 5,
        "attestation_target_hit_percentage": 50 
      }
    }
  }
}
```

## Additional Info

Based on #3756 which should be merged first.
This commit is contained in:
Mac L
2022-12-09 06:39:19 +00:00
parent 84392d63fa
commit 8cb9b5e126
5 changed files with 181 additions and 5 deletions
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27
book/src/api-lighthouse.md
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@@ -121,6 +121,33 @@ curl -X GET "http://localhost:5052/lighthouse/ui/validator_count" -H "accept: ap
}
```
### `/lighthouse/ui/validator_metrics`
Re-exposes certain metrics from the validator monitor to the HTTP API.
Will only return metrics for the validators currently being monitored and are present in the POST data.
```bash
curl -X POST "http://localhost:5052/lighthouse/ui/validator_metrics" -d '{"indices": [12345]}' -H "Content-Type: application/json" | jq
```
```json
{
"data": {
"validators": {
"12345": {
"attestation_hits": 10,
"attestation_misses": 0,
"attestation_hit_percentage": 100,
"attestation_head_hits": 10,
"attestation_head_misses": 0,
"attestation_head_hit_percentage": 100,
"attestation_target_hits": 5,
"attestation_target_misses": 5,
"attestation_target_hit_percentage": 50
}
}
}
}
```
### `/lighthouse/syncing`
```bash