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package backrest
import (
"sync"
"time"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
)
var (
// Differential backup is always based on last full,
// if the last backup was full, the metric will take full backup value.
// Incremental backup is always based on last full or differential,
// if the last backup was full or differential, the metric will take
// full or differential backup value.
pgbrStanzaBackupSinceLastCompletionSecondsMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_since_last_completion_seconds",
Help: "Seconds since the last completed full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastDurationMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_duration_seconds",
Help: "Backup duration for the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza",
})
pgbrStanzaBackupLastDatabaseSizeMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_size_bytes",
Help: "Full uncompressed size of the database in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastDatabaseBackupSizeMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_delta_bytes",
Help: "Amount of data in the database to actually backup in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastRepoBackupSetSizeMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_repo_size_bytes",
Help: "Full compressed files size to restore the database from the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastRepoBackupSetSizeMapMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_repo_size_map_bytes",
Help: "Size of block incremental map in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastRepoBackupSizeMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_repo_delta_bytes",
Help: "Compressed files size in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastRepoBackupSizeMapMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_repo_delta_map_bytes",
Help: "Size of block incremental delta map in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastErrorMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_error_status",
Help: "Error status in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastAnnotationsMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_annotations",
Help: "Number of annotations in the last full, differential or incremental backup.",
},
[]string{
"backup_type",
"block_incr",
"stanza",
})
// For json pgBackRest output
pgbrStanzaBackupLastReferencesMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_references",
Help: "Number of references to another backup (backup reference list) in the last full, differential or incremental backup.",
},
[]string{
// Don't change this order.
// See function processBackupReferencesCount().
"ref_backup",
"backup_type",
"block_incr",
"stanza"})
pgbrStanzaBackupLastDatabasesMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "pgbackrest_backup_last_databases",
Help: "Number of databases in the last full, differential or incremental backup.",
},
[]string{
// Don't change this order.
// See function processSpecificBackupData().
"backup_type",
"stanza",
"block_incr",
})
)
// Set backup metrics:
// - pgbackrest_backup_since_last_completion_seconds
// - pgbackrest_backup_last_duration_seconds
// - pgbackrest_backup_last_size_bytes
// - pgbackrest_backup_last_delta_bytes
// - pgbackrest_backup_last_repo_size_bytes
// - pgbackrest_backup_last_repo_size_map_bytes
// - pgbackrest_backup_last_repo_delta_bytes
// - pgbackrest_backup_last_repo_delta_map_bytes
// - pgbackrest_backup_last_error_status
// - pgbackrest_backup_last_annotations
func getBackupLastMetrics(stanzaName string, lastBackups lastBackupsStruct, currentUnixTime int64, setUpMetricValueFun setUpMetricValueFunType, logger log.Logger) {
for _, backup := range []backupStruct{lastBackups.full, lastBackups.diff, lastBackups.incr} {
// Repo backup map size for last backups.
setUpMetric(
pgbrStanzaBackupLastRepoBackupSetSizeMapMetric,
"pgbackrest_backup_last_repo_size_map_bytes",
convertInt64PointerToFloat64(backup.backupRepoSizeMap),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Repo backup delta map size for last backups.
setUpMetric(
pgbrStanzaBackupLastRepoBackupSizeMapMetric,
"pgbackrest_backup_last_repo_delta_map_bytes",
convertInt64PointerToFloat64(backup.backupRepoDeltaMap),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Seconds since the last completed backups.
setUpMetric(
pgbrStanzaBackupSinceLastCompletionSecondsMetric,
"pgbackrest_backup_since_last_completion_seconds",
time.Unix(currentUnixTime, 0).Sub(backup.backupTime).Seconds(),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Backup durations in seconds for last backups.
setUpMetric(
pgbrStanzaBackupLastDurationMetric,
"pgbackrest_backup_last_duration_seconds",
backup.backupDuration,
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Database size for last backups.
setUpMetric(
pgbrStanzaBackupLastDatabaseSizeMetric,
"pgbackrest_backup_last_size_bytes",
float64(backup.backupSize),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Database backup size for last backups.
setUpMetric(
pgbrStanzaBackupLastDatabaseBackupSizeMetric,
"pgbackrest_backup_last_delta_bytes",
float64(backup.backupDelta),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Repo backup set size.
setUpMetric(
pgbrStanzaBackupLastRepoBackupSetSizeMetric,
"pgbackrest_backup_last_repo_size_bytes",
convertInt64PointerToFloat64(backup.backupRepoSize),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Repo backup size.
setUpMetric(
pgbrStanzaBackupLastRepoBackupSizeMetric,
"pgbackrest_backup_last_repo_delta_bytes",
float64(backup.backupRepoDelta),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Backup error status.
setUpMetric(
pgbrStanzaBackupLastErrorMetric,
"pgbackrest_backup_last_error_status",
convertBoolPointerToFloat64(backup.backupError),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Number of backup annotations.
// Information about number of annotations in backup has appeared since pgBackRest v2.41.
// If there are no annotations, the metric will be set to 0 for this backup.
setUpMetric(
pgbrStanzaBackupLastAnnotationsMetric,
"pgbackrest_backup_last_annotations",
convertAnnotationPointerToFloat64(backup.backupAnnotation),
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName,
)
// Number of references to another backup (backup reference list).
// For no-last backups, the metric is collected only if the flag is set.
// For last backups, the metric is always collected.
processBackupReferencesCount(
backup.backupReference,
"pgbackrest_backup_last_references",
pgbrStanzaBackupLastReferencesMetric,
setUpMetricValueFun,
logger,
backup.backupType,
backup.backupBlockIncr,
stanzaName)
}
}
// Set backup metrics:
// - pgbackrest_backup_last_databases
func getBackupLastDBCountMetrics(config, configIncludePath, stanzaName string, lastBackups lastBackupsStruct, setUpMetricValueFun setUpMetricValueFunType, logger log.Logger) {
// For diff and incr run in parallel.
var wg sync.WaitGroup
// If name for diff backup is equal to full, there is no point in re-receiving data.
if lastBackups.diff.backupLabel != lastBackups.full.backupLabel {
wg.Add(1)
go func(backupLabel, backupType, backupBlockIncr string) {
defer wg.Done()
processSpecificBackupData(
config,
configIncludePath,
stanzaName,
backupLabel,
backupType,
"pgbackrest_backup_last_databases",
pgbrStanzaBackupLastDatabasesMetric,
setUpMetricValueFun,
logger,
backupBlockIncr,
)
}(lastBackups.diff.backupLabel, lastBackups.diff.backupType, lastBackups.diff.backupBlockIncr)
}
// If name for diff backup is equal to full, there is no point in re-receiving data.
if lastBackups.incr.backupLabel != lastBackups.diff.backupLabel {
wg.Add(1)
go func(backupLabel, backupType, backupBlockIncr string) {
defer wg.Done()
processSpecificBackupData(
config,
configIncludePath,
stanzaName,
backupLabel,
backupType,
"pgbackrest_backup_last_databases",
pgbrStanzaBackupLastDatabasesMetric,
setUpMetricValueFun,
logger,
backupBlockIncr,
)
}(lastBackups.incr.backupLabel, lastBackups.incr.backupType, lastBackups.incr.backupBlockIncr)
}
var metricValue float64 = 0
// Try to get info for full backup.
parseStanzaDataSpecific, err := getParsedSpecificBackupInfoData(config, configIncludePath, stanzaName, lastBackups.full.backupLabel, logger)
if err != nil {
level.Error(logger).Log(
"msg", "Get data from pgBackRest failed",
"stanza", stanzaName,
"backup", lastBackups.full.backupLabel,
"err", err,
)
}
if (len(parseStanzaDataSpecific) != 0 && len(parseStanzaDataSpecific[0].Backup) != 0) &&
parseStanzaDataSpecific[0].Backup[0].DatabaseRef != nil {
metricValue = convertDatabaseRefPointerToFloat(parseStanzaDataSpecific[0].Backup[0].DatabaseRef)
} else {
level.Warn(logger).Log("msg", "No backup data returned",
"stanza", stanzaName,
"backup", lastBackups.full.backupLabel,
)
}
// Number of databases in the last full backup.
setUpMetric(
pgbrStanzaBackupLastDatabasesMetric,
"pgbackrest_backup_last_databases",
metricValue,
setUpMetricValueFun,
logger,
lastBackups.full.backupType,
stanzaName,
lastBackups.full.backupBlockIncr,
)
if lastBackups.diff.backupLabel == lastBackups.full.backupLabel {
setUpMetric(
pgbrStanzaBackupLastDatabasesMetric,
"pgbackrest_backup_last_databases",
metricValue,
setUpMetricValueFun,
logger,
lastBackups.diff.backupType,
stanzaName,
lastBackups.diff.backupBlockIncr,
)
}
if lastBackups.incr.backupLabel == lastBackups.diff.backupLabel {
setUpMetric(
pgbrStanzaBackupLastDatabasesMetric,
"pgbackrest_backup_last_databases",
metricValue,
setUpMetricValueFun,
logger,
lastBackups.incr.backupType,
stanzaName,
lastBackups.incr.backupBlockIncr,
)
}
}
func resetLastBackupMetrics() {
pgbrStanzaBackupSinceLastCompletionSecondsMetric.Reset()
pgbrStanzaBackupLastDatabasesMetric.Reset()
pgbrStanzaBackupLastDurationMetric.Reset()
pgbrStanzaBackupLastDatabaseSizeMetric.Reset()
pgbrStanzaBackupLastDatabaseBackupSizeMetric.Reset()
pgbrStanzaBackupLastRepoBackupSetSizeMetric.Reset()
pgbrStanzaBackupLastRepoBackupSetSizeMapMetric.Reset()
pgbrStanzaBackupLastRepoBackupSizeMetric.Reset()
pgbrStanzaBackupLastRepoBackupSizeMapMetric.Reset()
pgbrStanzaBackupLastErrorMetric.Reset()
pgbrStanzaBackupLastAnnotationsMetric.Reset()
pgbrStanzaBackupLastReferencesMetric.Reset()
}
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