github.com/munnerz/test-infra@v0.0.0-20190108210205-ce3d181dc989/greenhouse/prometheus.go (about)

     1  /*
     2  Copyright 2018 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"github.com/prometheus/client_golang/prometheus"
    21  )
    22  
    23  // prometheusMetrics are served by /prometheus on the metrics port
    24  type prometheusMetrics struct {
    25  	DiskFree             prometheus.Gauge
    26  	DiskUsed             prometheus.Gauge
    27  	DiskTotal            prometheus.Gauge
    28  	FilesEvicted         prometheus.Counter
    29  	ActionCacheHits      prometheus.Counter
    30  	CASHits              prometheus.Counter
    31  	ActionCacheMisses    prometheus.Counter
    32  	CASMisses            prometheus.Counter
    33  	LastEvictedAccessAge prometheus.Gauge
    34  }
    35  
    36  func initMetrics() *prometheusMetrics {
    37  	metrics := &prometheusMetrics{
    38  		DiskFree: prometheus.NewGauge(prometheus.GaugeOpts{
    39  			Name: "bazel_cache_disk_free",
    40  			Help: "Free gb on bazel cache disk",
    41  		}),
    42  		DiskUsed: prometheus.NewGauge(prometheus.GaugeOpts{
    43  			Name: "bazel_cache_disk_used",
    44  			Help: "Used gb on bazel cache disk",
    45  		}),
    46  		DiskTotal: prometheus.NewGauge(prometheus.GaugeOpts{
    47  			Name: "bazel_cache_disk_total",
    48  			Help: "Total gb on bazel cache disk",
    49  		}),
    50  		FilesEvicted: prometheus.NewCounter(prometheus.CounterOpts{
    51  			Name: "bazel_cache_evicted_files",
    52  			Help: "number of files evicted since last server start",
    53  		}),
    54  		ActionCacheHits: prometheus.NewCounter(prometheus.CounterOpts{
    55  			Name: "bazel_cache_cas_hits",
    56  			Help: "Approximate number of Action Cache hits since last server start",
    57  		}),
    58  		CASHits: prometheus.NewCounter(prometheus.CounterOpts{
    59  			Name: "bazel_cache_action_hits",
    60  			Help: "Approximate number of Content Addressed Storage cache hits since last server start",
    61  		}),
    62  		ActionCacheMisses: prometheus.NewCounter(prometheus.CounterOpts{
    63  			Name: "bazel_cache_action_misses",
    64  			Help: "Approximate number of Content Addressed Storage cache misses since last server start",
    65  		}),
    66  		CASMisses: prometheus.NewCounter(prometheus.CounterOpts{
    67  			Name: "bazel_cache_cas_misses",
    68  			Help: "Approximate number of Content Addressed Storage cache misses since last server start",
    69  		}),
    70  		LastEvictedAccessAge: prometheus.NewGauge(prometheus.GaugeOpts{
    71  			Name: "bazel_cache_last_evicted_access_age",
    72  			Help: "Hours since last access of most recently evicted file (at eviction time)",
    73  		}),
    74  	}
    75  	prometheus.MustRegister(metrics.DiskFree)
    76  	prometheus.MustRegister(metrics.DiskUsed)
    77  	prometheus.MustRegister(metrics.DiskTotal)
    78  	prometheus.MustRegister(metrics.FilesEvicted)
    79  	prometheus.MustRegister(metrics.ActionCacheHits)
    80  	prometheus.MustRegister(metrics.CASHits)
    81  	prometheus.MustRegister(metrics.ActionCacheMisses)
    82  	prometheus.MustRegister(metrics.CASMisses)
    83  	prometheus.MustRegister(metrics.LastEvictedAccessAge)
    84  	return metrics
    85  }