Files
restic-manager/internal/store/host_repo_stats_history.go
T

99 lines
3.0 KiB
Go

package store
import (
"context"
"database/sql"
"errors"
"fmt"
"time"
)
// RepoStatsHistoryPoint is one (day, host) point for the trend chart.
// Both metric pointers may be nil — a row exists as soon as either
// metric was reported on that day.
type RepoStatsHistoryPoint struct {
Day time.Time // 00:00:00 UTC
TotalSizeBytes *int64
SnapshotCount *int64
}
// UpsertHostRepoStatsHistory records the metrics carried by a
// repo.stats patch into the daily history table. Only the non-nil
// fields of patch.TotalSizeBytes / patch.SnapshotCount are written;
// existing values in the row are preserved via COALESCE so a
// prune-only or check-only patch does not null out a backup-time
// size we already captured earlier the same day.
func (s *Store) UpsertHostRepoStatsHistory(
ctx context.Context, hostID, day string, patch HostRepoStats, recordedAt time.Time,
) error {
_, err := s.db.ExecContext(ctx, `
INSERT INTO host_repo_stats_history
(host_id, day, total_size_bytes, snapshot_count, recorded_at)
VALUES (?, ?, ?, ?, ?)
ON CONFLICT(host_id, day) DO UPDATE SET
total_size_bytes = COALESCE(excluded.total_size_bytes, host_repo_stats_history.total_size_bytes),
snapshot_count = COALESCE(excluded.snapshot_count, host_repo_stats_history.snapshot_count),
recorded_at = excluded.recorded_at`,
hostID, day,
nullableInt64(patch.TotalSizeBytes),
nullableInt64(patch.SnapshotCount),
recordedAt.UTC().Format(time.RFC3339Nano),
)
if err != nil {
return fmt.Errorf("store: upsert host_repo_stats_history: %w", err)
}
return nil
}
// ListHostRepoStatsHistory returns all points for hostID with day
// >= since (UTC), ordered ascending. Pass time.Time{} to fetch the
// full history.
func (s *Store) ListHostRepoStatsHistory(
ctx context.Context, hostID string, since time.Time,
) ([]RepoStatsHistoryPoint, error) {
sinceStr := ""
if !since.IsZero() {
sinceStr = since.UTC().Format("2006-01-02")
}
rows, err := s.db.QueryContext(ctx, `
SELECT day, total_size_bytes, snapshot_count
FROM host_repo_stats_history
WHERE host_id = ? AND day >= ?
ORDER BY day ASC`,
hostID, sinceStr)
if err != nil {
return nil, fmt.Errorf("store: list host_repo_stats_history: %w", err)
}
defer func() { _ = rows.Close() }()
var out []RepoStatsHistoryPoint
for rows.Next() {
var (
dayStr string
total sql.NullInt64
snapCnt sql.NullInt64
)
if err := rows.Scan(&dayStr, &total, &snapCnt); err != nil {
return nil, fmt.Errorf("store: scan history row: %w", err)
}
d, perr := time.Parse("2006-01-02", dayStr)
if perr != nil {
return nil, fmt.Errorf("store: parse history day %q: %w", dayStr, perr)
}
p := RepoStatsHistoryPoint{Day: d}
if total.Valid {
v := total.Int64
p.TotalSizeBytes = &v
}
if snapCnt.Valid {
v := snapCnt.Int64
p.SnapshotCount = &v
}
out = append(out, p)
}
if err := rows.Err(); err != nil && !errors.Is(err, sql.ErrNoRows) {
return nil, fmt.Errorf("store: iterate history rows: %w", err)
}
return out, nil
}