68 lines
2.4 KiB
Go
68 lines
2.4 KiB
Go
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// Copyright 2019 clair authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package monitoring
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import (
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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PromErrorsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
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Name: "clair_pgsql_errors_total",
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Help: "Number of errors that PostgreSQL requests generated.",
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}, []string{"request"})
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PromCacheHitsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
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Name: "clair_pgsql_cache_hits_total",
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Help: "Number of cache hits that the PostgreSQL backend did.",
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}, []string{"object"})
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PromCacheQueriesTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
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Name: "clair_pgsql_cache_queries_total",
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Help: "Number of cache queries that the PostgreSQL backend did.",
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}, []string{"object"})
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PromQueryDurationMilliseconds = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Name: "clair_pgsql_query_duration_milliseconds",
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Help: "Time it takes to execute the database query.",
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}, []string{"query", "subquery"})
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PromConcurrentLockVAFV = prometheus.NewGauge(prometheus.GaugeOpts{
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Name: "clair_pgsql_concurrent_lock_vafv_total",
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Help: "Number of transactions trying to hold the exclusive Vulnerability_Affects_Feature lock.",
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})
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)
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func init() {
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prometheus.MustRegister(PromErrorsTotal)
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prometheus.MustRegister(PromCacheHitsTotal)
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prometheus.MustRegister(PromCacheQueriesTotal)
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prometheus.MustRegister(PromQueryDurationMilliseconds)
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prometheus.MustRegister(PromConcurrentLockVAFV)
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}
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// monitoring.ObserveQueryTime computes the time elapsed since `start` to represent the
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// query time.
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// 1. `query` is a pgSession function name.
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// 2. `subquery` is a specific query or a batched query.
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// 3. `start` is the time right before query is executed.
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func ObserveQueryTime(query, subquery string, start time.Time) {
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PromQueryDurationMilliseconds.
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WithLabelValues(query, subquery).
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Observe(float64(time.Since(start).Nanoseconds()) / float64(time.Millisecond))
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}
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