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b2c5b75efa
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.
74 lines
2.5 KiB
Go
74 lines
2.5 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"net/http"
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"strings"
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"github.com/minio/mux"
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"github.com/minio/pkg/v2/env"
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)
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const (
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prometheusMetricsPathLegacy = "/prometheus/metrics"
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prometheusMetricsV2ClusterPath = "/v2/metrics/cluster"
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prometheusMetricsV2BucketPath = "/v2/metrics/bucket"
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prometheusMetricsV2NodePath = "/v2/metrics/node"
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prometheusMetricsV2ResourcePath = "/v2/metrics/resource"
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// Metrics v3 endpoints
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metricsV3Path = "/metrics/v3"
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)
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// Standard env prometheus auth type
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const (
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EnvPrometheusAuthType = "MINIO_PROMETHEUS_AUTH_TYPE"
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)
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type prometheusAuthType string
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const (
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prometheusJWT prometheusAuthType = "jwt"
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prometheusPublic prometheusAuthType = "public"
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)
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// registerMetricsRouter - add handler functions for metrics.
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func registerMetricsRouter(router *mux.Router) {
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// metrics router
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metricsRouter := router.NewRoute().PathPrefix(minioReservedBucketPath).Subrouter()
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authType := prometheusAuthType(strings.ToLower(env.Get(EnvPrometheusAuthType, string(prometheusJWT))))
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auth := AuthMiddleware
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if authType == prometheusPublic {
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auth = NoAuthMiddleware
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}
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metricsRouter.Handle(prometheusMetricsPathLegacy, auth(metricsHandler()))
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metricsRouter.Handle(prometheusMetricsV2ClusterPath, auth(metricsServerHandler()))
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metricsRouter.Handle(prometheusMetricsV2BucketPath, auth(metricsBucketHandler()))
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metricsRouter.Handle(prometheusMetricsV2NodePath, auth(metricsNodeHandler()))
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metricsRouter.Handle(prometheusMetricsV2ResourcePath, auth(metricsResourceHandler()))
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// Metrics v3!
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metricsV3Server := newMetricsV3Server(authType)
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// Register metrics v3 handler. It also accepts an optional query
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// parameter `?list` - see handler for details.
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metricsRouter.Methods(http.MethodGet).Path(metricsV3Path + "{pathComps:.*}").Handler(metricsV3Server)
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}
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