smartctl_exporter/smartctlinfo.go

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// Copyright 2022 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 main
import (
"fmt"
"github.com/prometheus/client_golang/prometheus"
"github.com/tidwall/gjson"
)
// SMARTctlInfo object
type SMARTctlInfo struct {
ch chan<- prometheus.Metric
json gjson.Result
Ready bool
}
// NewSMARTctlInfo is smartctl constructor
func NewSMARTctlInfo(ch chan<- prometheus.Metric) SMARTctlInfo {
smart := SMARTctlInfo{}
smart.ch = ch
smart.Ready = false
return smart
}
// SetJSON metrics
func (smart *SMARTctlInfo) SetJSON(json gjson.Result) {
if !smart.Ready {
smart.json = json
smart.Ready = true
}
}
// Collect metrics
func (smart *SMARTctlInfo) Collect() {
if smart.Ready {
smart.mineVersion()
}
}
func (smart *SMARTctlInfo) mineVersion() {
smartctlJSON := smart.json.Get("smartctl")
smartctlVersion := smartctlJSON.Get("version").Array()
jsonVersion := smart.json.Get("json_format_version").Array()
smart.ch <- prometheus.MustNewConstMetric(
metricSmartctlVersion,
prometheus.GaugeValue,
1,
fmt.Sprintf("%d.%d", jsonVersion[0].Int(), jsonVersion[1].Int()),
fmt.Sprintf("%d.%d", smartctlVersion[0].Int(), smartctlVersion[1].Int()),
smartctlJSON.Get("svn_revision").String(),
smartctlJSON.Get("build_info").String(),
)
}