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feat: Add Metrics V3 API (#19068)

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Metrics v3 is mainly a reorganization of metrics into smaller groups of
metrics and the removal of internal aggregation of metrics received from
peer nodes in a MinIO cluster.

This change adds the endpoint `/minio/metrics/v3` as the top-level metrics
endpoint and under this, various sub-endpoints are implemented. These
are currently documented in `docs/metrics/v3.md`

The handler will serve metrics at any path
`/minio/metrics/v3/PATH`, as follows:

when PATH is a sub-endpoint listed above => serves the group of
metrics under that path; or when PATH is a (non-empty) parent 
directory of the sub-endpoints listed above => serves metrics
from each child sub-endpoint of PATH. otherwise, returns a no 
resource found error

All available metrics are listed in the `docs/metrics/v3.md`. More will
be added subsequently.
This commit is contained in:
Aditya Manthramurthy
2024-03-10 01:15:15 -08:00
committed by GitHub
parent 2dfa9adc5d
commit b2c5b75efa
24 changed files with 2920 additions and 755 deletions
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3
cmd/generic-handlers.go
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@@ -233,7 +233,8 @@ func guessIsMetricsReq(req *http.Request) bool {
req.URL.Path == minioReservedBucketPath+prometheusMetricsV2ClusterPath ||
req.URL.Path == minioReservedBucketPath+prometheusMetricsV2NodePath ||
req.URL.Path == minioReservedBucketPath+prometheusMetricsV2BucketPath ||
req.URL.Path == minioReservedBucketPath+prometheusMetricsV2ResourcePath
req.URL.Path == minioReservedBucketPath+prometheusMetricsV2ResourcePath ||
strings.HasPrefix(req.URL.Path, minioReservedBucketPath+metricsV3Path)
}
// guessIsRPCReq - returns true if the request is for an RPC endpoint.