mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-25 14:27:21 +01:00
922e74d58f
Named return variables should only be used to describe the returned type further, e.g. `err error` doesn't add any new information and is just stutter.
46 lines
1.6 KiB
Go
46 lines
1.6 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.
|
|
|
|
// Package collector includes all individual collectors to gather and export system metrics.
|
|
package collector
|
|
|
|
import (
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/common/log"
|
|
)
|
|
|
|
// Namespace defines the common namespace to be used by all metrics.
|
|
const Namespace = "node"
|
|
|
|
// Factories contains the list of all available collectors.
|
|
var Factories = make(map[string]func() (Collector, error))
|
|
|
|
func warnDeprecated(collector string) {
|
|
log.Warnf("The %s collector is deprecated and will be removed in the future!", collector)
|
|
}
|
|
|
|
// Collector is the interface a collector has to implement.
|
|
type Collector interface {
|
|
// Get new metrics and expose them via prometheus registry.
|
|
Update(ch chan<- prometheus.Metric) error
|
|
}
|
|
|
|
type typedDesc struct {
|
|
desc *prometheus.Desc
|
|
valueType prometheus.ValueType
|
|
}
|
|
|
|
func (d *typedDesc) mustNewConstMetric(value float64, labels ...string) prometheus.Metric {
|
|
return prometheus.MustNewConstMetric(d.desc, d.valueType, value, labels...)
|
|
}
|