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metrics.go
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metrics.go
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// Copyright 2014 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metrics
import (
"strings"
"time"
"github.com/prometheus/client_golang/prometheus"
)
type (
engineFailure string
registryOp string
)
const (
Namespace = "fleet"
MachineAway engineFailure = "machine_away"
RunFailure engineFailure = "run"
ScheduleFailure engineFailure = "schedule"
Get registryOp = "get"
Set registryOp = "set"
GetAll registryOp = "get_all"
)
var (
leaderGauge = prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "engine",
Name: "leader_start_time",
Help: "Start time of becoming an engine leader since epoch in seconds.",
})
engineTaskCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: "engine",
Name: "task_count_total",
Help: "Counter of engine schedule tasks.",
}, []string{"type"})
engineTaskFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: "engine",
Name: "task_failure_count_total",
Help: "Counter of engine schedule task failures.",
}, []string{"type"})
engineReconcileCount = prometheus.NewCounter(prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: "engine",
Name: "reconcile_count_total",
Help: "Counter of reconcile rounds.",
})
engineReconcileDuration = prometheus.NewHistogram(prometheus.HistogramOpts{
Namespace: Namespace,
Subsystem: "engine",
Name: "reconcile_duration_second",
Help: "Histogram of time (in seconds) each schedule round takes.",
})
engineReconcileFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: "engine",
Name: "reconcile_failure_count_total",
Help: "Counter of scheduling failures.",
}, []string{"type"})
registryOpCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: "registry",
Name: "operation_count_total",
Help: "Counter of registry operations.",
}, []string{"type"})
registryOpDuration = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: Namespace,
Subsystem: "registry",
Name: "operation_duration_second",
Help: "Histogram of time (in seconds) each schedule round takes.",
}, []string{"ops"})
registryOpFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: Namespace,
Subsystem: "registry",
Name: "operation_failed_count_total",
Help: "Counter of failed registry operations.",
}, []string{"type"})
)
func init() {
prometheus.MustRegister(leaderGauge)
prometheus.MustRegister(engineTaskCount)
prometheus.MustRegister(engineTaskFailureCount)
prometheus.MustRegister(engineReconcileCount)
prometheus.MustRegister(engineReconcileFailureCount)
}
func ReportEngineLeader() {
epoch := time.Now().Unix()
leaderGauge.Add(float64(epoch))
}
func ReportEngineTask(task string) {
task = strings.ToLower(task)
engineTaskCount.WithLabelValues(string(task)).Inc()
}
func ReportEngineTaskFailure(task string) {
task = strings.ToLower(task)
engineTaskFailureCount.WithLabelValues(string(task)).Inc()
}
func ReportEngineReconcileSuccess(start time.Time) {
engineReconcileCount.Inc()
engineReconcileDuration.Observe(float64(time.Since(start)) / float64(time.Second))
}
func ReportEngineReconcileFailure(reason engineFailure) {
engineReconcileFailureCount.WithLabelValues(string(reason)).Inc()
}
func ReportRegistryOpSuccess(op registryOp, start time.Time) {
registryOpCount.WithLabelValues(string(op)).Inc()
registryOpDuration.WithLabelValues(string(op)).Observe(float64(time.Since(start)) / float64(time.Second))
}
func ReportRegistryOpFailure(op registryOp) {
registryOpFailureCount.WithLabelValues(string(op)).Inc()
}