node_exporter/collector/time.go
Calle Pettersson 859a825bb8 Replace --collectors.enabled with per-collector flags (#640)
* Move NodeCollector into package collector

* Refactor collector enabling

* Update README with new collector enabled flags

* Fix out-of-date inline flag reference syntax

* Use new flags in end-to-end tests

* Add flag to disable all default collectors

* Track if a flag has been set explicitly

* Add --collectors.disable-defaults to README

* Revert disable-defaults flag

* Shorten flags

* Fixup timex collector registration

* Fix end-to-end tests

* Change procfs and sysfs path flags

* Fix review comments
2017-09-28 15:06:26 +02:00

51 lines
1.4 KiB
Go

// 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 !notime
package collector
import (
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
)
type timeCollector struct {
desc *prometheus.Desc
}
func init() {
registerCollector("time", defaultEnabled, NewTimeCollector)
}
// NewTimeCollector returns a new Collector exposing the current system time in
// seconds since epoch.
func NewTimeCollector() (Collector, error) {
return &timeCollector{
desc: prometheus.NewDesc(
namespace+"_time",
"System time in seconds since epoch (1970).",
nil, nil,
),
}, nil
}
func (c *timeCollector) Update(ch chan<- prometheus.Metric) error {
now := float64(time.Now().UnixNano()) / 1e9
log.Debugf("Return time: %f", now)
ch <- prometheus.MustNewConstMetric(c.desc, prometheus.GaugeValue, now)
return nil
}