prometheus-borg-exporter/metrics.go

package main

import (
	"github.com/prometheus/client_golang/prometheus"
)

type Metrics struct {
	ArchiveCount      prometheus.GaugeVec
	LastArchiveTime   prometheus.GaugeVec
	LastModified      prometheus.GaugeVec
	TotalChunks       prometheus.GaugeVec
	TotalCsize        prometheus.GaugeVec
	TotalSize         prometheus.GaugeVec
	TotalUniqueChunks prometheus.GaugeVec
	UniqueCsize       prometheus.GaugeVec
	UniqueSize        prometheus.GaugeVec
}

func NewMetrics(reg prometheus.Registerer) *Metrics {
	metrics := &Metrics{
		ArchiveCount:      *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "archive_count", Help: "Number of archive for this repository"}, []string{"repo_name"}),
		LastArchiveTime:   *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "last_archive", Help: "UNIX timestamp of the last archive"}, []string{"repo_name"}),
		LastModified:      *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "last_modified", Help: "Last modified UNIX timestamp"}, []string{"repo_name"}),
		TotalChunks:       *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "total_chunks", Help: "Number of chunks"}, []string{"repo_name"}),
		TotalCsize:        *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "total_csize", Help: "Total compressed and encrypted size of all chunks"}, []string{"repo_name"}),
		TotalSize:         *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "total_size", Help: "Total uncompressed size of all chunks"}, []string{"repo_name"}),
		TotalUniqueChunks: *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "total_unique_chunks", Help: "Number of unique chunks"}, []string{"repo_name"}),
		UniqueCsize:       *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "unique_csize", Help: "Compressed and encrypted size of all chunks"}, []string{"repo_name"}),
		UniqueSize:        *prometheus.NewGaugeVec(prometheus.GaugeOpts{Namespace: "borg", Subsystem: "repository", Name: "unique_size", Help: "Uncompressed size of all chunks"}, []string{"repo_name"}),
	}

	reg.MustRegister(metrics.ArchiveCount)
	reg.MustRegister(metrics.LastArchiveTime)
	reg.MustRegister(metrics.LastModified)
	reg.MustRegister(metrics.TotalChunks)
	reg.MustRegister(metrics.TotalCsize)
	reg.MustRegister(metrics.TotalSize)
	reg.MustRegister(metrics.TotalUniqueChunks)
	reg.MustRegister(metrics.UniqueCsize)
	reg.MustRegister(metrics.UniqueSize)

	return metrics
}

// Reset all metrics
//
// This should be called on every loop iteration.
func (m *Metrics) Reset() {
	m.ArchiveCount.Reset()
	m.LastArchiveTime.Reset()
	m.LastModified.Reset()
	m.TotalChunks.Reset()
	m.TotalCsize.Reset()
	m.TotalSize.Reset()
	m.TotalUniqueChunks.Reset()
	m.UniqueCsize.Reset()
	m.UniqueSize.Reset()
}