prometheusmetricshost-metricsmachine-metricsnode-metricsprocfsprometheus-exportersystem-informationsystem-metrics
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50 lines
1.4 KiB
50 lines
1.4 KiB
// Copyright 2015 The Prometheus Authors |
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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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// +build !notime |
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package collector |
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import ( |
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"time" |
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"github.com/prometheus/client_golang/prometheus" |
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"github.com/prometheus/common/log" |
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) |
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type timeCollector struct { |
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desc *prometheus.Desc |
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} |
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func init() { |
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Factories["time"] = NewTimeCollector |
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} |
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// NewTimeCollector returns a new Collector exposing the current system time in |
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// seconds since epoch. |
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func NewTimeCollector() (Collector, error) { |
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return &timeCollector{ |
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desc: prometheus.NewDesc( |
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Namespace+"_time", |
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"System time in seconds since epoch (1970).", |
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nil, nil, |
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), |
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}, nil |
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} |
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func (c *timeCollector) Update(ch chan<- prometheus.Metric) error { |
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now := float64(time.Now().UnixNano()) / 1e9 |
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log.Debugf("Return time: %f", now) |
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ch <- prometheus.MustNewConstMetric(c.desc, prometheus.GaugeValue, now) |
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return nil |
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}
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