metrics.go

Documentation: go.etcd.io/etcd/server/v3/lease

     1  // Copyright 2018 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package lease
    16  
    17  import (
    18  	"github.com/prometheus/client_golang/prometheus"
    19  )
    20  
    21  var (
    22  	leaseGranted = prometheus.NewCounter(prometheus.CounterOpts{
    23  		Namespace: "etcd_debugging",
    24  		Subsystem: "lease",
    25  		Name:      "granted_total",
    26  		Help:      "The total number of granted leases.",
    27  	})
    28  
    29  	leaseRevoked = prometheus.NewCounter(prometheus.CounterOpts{
    30  		Namespace: "etcd_debugging",
    31  		Subsystem: "lease",
    32  		Name:      "revoked_total",
    33  		Help:      "The total number of revoked leases.",
    34  	})
    35  
    36  	leaseRenewed = prometheus.NewCounter(prometheus.CounterOpts{
    37  		Namespace: "etcd_debugging",
    38  		Subsystem: "lease",
    39  		Name:      "renewed_total",
    40  		Help:      "The number of renewed leases seen by the leader.",
    41  	})
    42  
    43  	leaseTotalTTLs = prometheus.NewHistogram(
    44  		prometheus.HistogramOpts{
    45  			Namespace: "etcd_debugging",
    46  			Subsystem: "lease",
    47  			Name:      "ttl_total",
    48  			Help:      "Bucketed histogram of lease TTLs.",
    49  			// 1 second -> 3 months
    50  			Buckets: prometheus.ExponentialBuckets(1, 2, 24),
    51  		})
    52  )
    53  
    54  func init() {
    55  	prometheus.MustRegister(leaseGranted)
    56  	prometheus.MustRegister(leaseRevoked)
    57  	prometheus.MustRegister(leaseRenewed)
    58  	prometheus.MustRegister(leaseTotalTTLs)
    59  }
    60
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