111 lines
3.1 KiB
Go
111 lines
3.1 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package satellitedb
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import (
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"context"
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"database/sql"
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"fmt"
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"github.com/lib/pq"
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sqlite3 "github.com/mattn/go-sqlite3"
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"storj.io/storj/internal/dbutil/pgutil"
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"storj.io/storj/internal/dbutil/sqliteutil"
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"storj.io/storj/pkg/pb"
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dbx "storj.io/storj/satellite/satellitedb/dbx"
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"storj.io/storj/storage"
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)
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type repairQueue struct {
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db *dbx.DB
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}
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func (r *repairQueue) Insert(ctx context.Context, seg *pb.InjuredSegment) error {
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_, err := r.db.ExecContext(ctx, r.db.Rebind(`INSERT INTO injuredsegments ( path, data ) VALUES ( ?, ? )`), seg.Path, seg)
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if err != nil {
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if pgutil.IsConstraintError(err) || sqliteutil.IsConstraintError(err) {
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return nil // quietly fail on reinsert
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}
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return err
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}
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return nil
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}
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func (r *repairQueue) postgresSelect(ctx context.Context) (seg *pb.InjuredSegment, err error) {
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err = r.db.QueryRowContext(ctx, `
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UPDATE injuredsegments SET attempted = timezone('utc', now()) WHERE path = (
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SELECT path FROM injuredsegments
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WHERE attempted IS NULL OR attempted < timezone('utc', now()) - interval '1 hour'
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ORDER BY path FOR UPDATE SKIP LOCKED LIMIT 1
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) RETURNING data`).Scan(&seg)
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if err == sql.ErrNoRows {
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err = storage.ErrEmptyQueue.New("")
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}
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return
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}
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func (r *repairQueue) sqliteSelect(ctx context.Context) (seg *pb.InjuredSegment, err error) {
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err = r.db.WithTx(ctx, func(ctx context.Context, tx *dbx.Tx) error {
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var path string
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err = tx.Tx.QueryRowContext(ctx, r.db.Rebind(`
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SELECT path, data FROM injuredsegments
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WHERE attempted IS NULL
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OR attempted < datetime('now','-1 hours')
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ORDER BY path LIMIT 1`)).Scan(&path, &seg)
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if err != nil {
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return err
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}
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res, err := tx.Tx.ExecContext(ctx, r.db.Rebind(`UPDATE injuredsegments SET attempted = datetime('now') WHERE path = ?`), path)
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if err != nil {
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return err
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}
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count, err := res.RowsAffected()
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if err != nil {
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return err
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}
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if count != 1 {
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return fmt.Errorf("Expected 1, got %d segments deleted", count)
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}
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return nil
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})
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if err == sql.ErrNoRows {
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err = storage.ErrEmptyQueue.New("")
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}
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return seg, err
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}
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func (r *repairQueue) Select(ctx context.Context) (seg *pb.InjuredSegment, err error) {
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switch t := r.db.DB.Driver().(type) {
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case *sqlite3.SQLiteDriver:
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return r.sqliteSelect(ctx)
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case *pq.Driver:
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return r.postgresSelect(ctx)
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default:
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return seg, fmt.Errorf("Unsupported database %t", t)
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}
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}
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func (r *repairQueue) Delete(ctx context.Context, seg *pb.InjuredSegment) (err error) {
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_, err = r.db.ExecContext(ctx, r.db.Rebind(`DELETE FROM injuredsegments WHERE path = ?`), seg.Path)
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return
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}
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func (r *repairQueue) SelectN(ctx context.Context, limit int) (segs []pb.InjuredSegment, err error) {
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if limit <= 0 || limit > storage.LookupLimit {
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limit = storage.LookupLimit
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}
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//todo: strictly enforce order-by or change tests
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rows, err := r.db.QueryContext(ctx, r.db.Rebind(`SELECT data FROM injuredsegments LIMIT ?`), limit)
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for rows.Next() {
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var seg pb.InjuredSegment
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err = rows.Scan(&seg)
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if err != nil {
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return
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}
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segs = append(segs, seg)
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}
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return segs, rows.Err()
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}
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