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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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15
cmd/metrics-router.go
View File

@@ -18,6 +18,7 @@
package cmd
import (
"net/http"
"strings"
"github.com/minio/mux"
@@ -30,6 +31,9 @@ const (
prometheusMetricsV2BucketPath = "/v2/metrics/bucket"
prometheusMetricsV2NodePath = "/v2/metrics/node"
prometheusMetricsV2ResourcePath = "/v2/metrics/resource"
// Metrics v3 endpoints
metricsV3Path = "/metrics/v3"
)
// Standard env prometheus auth type
@@ -48,10 +52,10 @@ const (
func registerMetricsRouter(router *mux.Router) {
// metrics router
metricsRouter := router.NewRoute().PathPrefix(minioReservedBucketPath).Subrouter()
authType := strings.ToLower(env.Get(EnvPrometheusAuthType, string(prometheusJWT)))
authType := prometheusAuthType(strings.ToLower(env.Get(EnvPrometheusAuthType, string(prometheusJWT))))
auth := AuthMiddleware
if prometheusAuthType(authType) == prometheusPublic {
if authType == prometheusPublic {
auth = NoAuthMiddleware
}
metricsRouter.Handle(prometheusMetricsPathLegacy, auth(metricsHandler()))
@@ -59,4 +63,11 @@ func registerMetricsRouter(router *mux.Router) {
metricsRouter.Handle(prometheusMetricsV2BucketPath, auth(metricsBucketHandler()))
metricsRouter.Handle(prometheusMetricsV2NodePath, auth(metricsNodeHandler()))
metricsRouter.Handle(prometheusMetricsV2ResourcePath, auth(metricsResourceHandler()))
// Metrics v3!
metricsV3Server := newMetricsV3Server(authType)
// Register metrics v3 handler. It also accepts an optional query
// parameter `?list` - see handler for details.
metricsRouter.Methods(http.MethodGet).Path(metricsV3Path + "{pathComps:.*}").Handler(metricsV3Server)
}