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// Copyright 2015 The Prometheus Authors
// 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.
// +build !norunit
package collector
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
"github.com/soundcloud/go-runit/runit"
)
type runitCollector struct {
state, stateDesired, stateNormal, stateTimestamp *prometheus.GaugeVec
}
func init() {
Factories["runit"] = NewRunitCollector
}
func NewRunitCollector() (Collector, error) {
var (
subsystem = "service"
constLabels = prometheus.Labels{"supervisor": "runit"}
labelNames = []string{"service"}
)
return &runitCollector{
state: prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "state",
Help: "State of runit service.",
ConstLabels: constLabels,
},
labelNames,
),
stateDesired: prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "desired_state",
Help: "Desired state of runit service.",
ConstLabels: constLabels,
},
labelNames,
),
stateNormal: prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "normal_state",
Help: "Normal state of runit service.",
ConstLabels: constLabels,
},
labelNames,
),
stateTimestamp: prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: subsystem,
Name: "state_last_change_timestamp_seconds",
Help: "Unix timestamp of the last runit service state change.",
ConstLabels: constLabels,
},
labelNames,
),
}, nil
}
func (c *runitCollector) Update(ch chan<- prometheus.Metric) error {
services, err := runit.GetServices("/etc/service")
if err != nil {
return err
}
for _, service := range services {
status, err := service.Status()
if err != nil {
log.Debugf("Couldn't get status for %s: %s, skipping...", service.Name, err)
continue
}
log.Debugf("%s is %d on pid %d for %d seconds", service.Name, status.State, status.Pid, status.Duration)
c.state.WithLabelValues(service.Name).Set(float64(status.State))
c.stateDesired.WithLabelValues(service.Name).Set(float64(status.Want))
c.stateTimestamp.WithLabelValues(service.Name).Set(float64(status.Timestamp.Unix()))
if status.NormallyUp {
c.stateNormal.WithLabelValues(service.Name).Set(1)
} else {
c.stateNormal.WithLabelValues(service.Name).Set(0)
}
}
c.state.Collect(ch)
c.stateDesired.Collect(ch)
c.stateNormal.Collect(ch)
c.stateTimestamp.Collect(ch)
return nil
}
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