/
metrics.go
92 lines (82 loc) · 2.4 KB
/
metrics.go
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/**
* Copyright 2019 SAP SE
*
* 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 backup
import (
"sync"
"github.com/prometheus/client_golang/prometheus"
)
type (
// UpdateStatus holds current status of backups
UpdateStatus struct {
sync.RWMutex `yaml:"-"`
IncBackup map[string]int
FullBackup map[string]int
Restarts prometheus.Counter
}
// MetricsCollector collects metrics fort the backup and verification status
MetricsCollector struct {
backup *prometheus.Desc
updateSts *UpdateStatus
}
)
// NewUpdateStatus returns a UpdateStatus with an intialized counter metric
func NewUpdateStatus() UpdateStatus {
return UpdateStatus{
FullBackup: make(map[string]int),
IncBackup: make(map[string]int),
Restarts: prometheus.NewCounter(prometheus.CounterOpts{Name: "maria_backup_errors", Help: "Number of times the backup process was restarted due to an error"}),
}
}
// Describe implements the exporter interface function
func (c *MetricsCollector) Describe(ch chan<- *prometheus.Desc) {
ch <- c.backup
}
// Collect implements the exporter interface function
func (c *MetricsCollector) Collect(ch chan<- prometheus.Metric) {
c.updateSts.RLock()
defer c.updateSts.RUnlock()
for storage, up := range c.updateSts.FullBackup {
ch <- prometheus.MustNewConstMetric(
c.backup,
prometheus.GaugeValue,
float64(up),
"full_backup",
storage,
)
}
for storage, up := range c.updateSts.IncBackup {
ch <- prometheus.MustNewConstMetric(
c.backup,
prometheus.GaugeValue,
float64(up),
"inc_backup",
storage,
)
}
ch <- c.updateSts.Restarts
}
// NewMetricsCollector create a prometheus collector instance
func NewMetricsCollector(u *UpdateStatus) *MetricsCollector {
m := MetricsCollector{
updateSts: u,
backup: prometheus.NewDesc(
"maria_backup_status",
"backup status of mariadb",
[]string{"kind", "storage"},
prometheus.Labels{}),
}
return &m
}