121 lines
2.4 KiB
Go
121 lines
2.4 KiB
Go
package sqlite
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import (
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"github.com/leafee98/paste-abroad/internel/storage"
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"github.com/leafee98/paste-abroad/internel/utils"
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"github.com/mattn/go-sqlite3"
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"database/sql"
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"errors"
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"time"
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)
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type StorageSqlite struct {
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db *sql.DB
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idLength int
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}
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func New(db_path string, idLength int) (*StorageSqlite, error) {
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var s StorageSqlite
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var err error
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s.idLength = idLength
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s.db, err = sql.Open("sqlite3", db_path)
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if err != nil {
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return &s, err
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}
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if err := initDatabase(s.db); err != nil {
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return nil, err
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}
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return &s, nil
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}
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func initDatabase(db *sql.DB) error {
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sqlStmt := `
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create table if not exists paste (
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id text unique,
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content blob,
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expire integer
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);
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create index if not exists paste_id
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on paste ( id );
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`
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if _, err := db.Exec(sqlStmt); err != nil {
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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 (s *StorageSqlite) Close() error {
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return s.db.Close()
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}
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func (s *StorageSqlite) Save(p *storage.Paste) (string, error) {
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stmt, err := s.db.Prepare(`insert into paste (id, content, expire) values (?, ?, ?);`)
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if err != nil {
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return "", err
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}
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defer stmt.Close()
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var id string
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for true {
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id = utils.GenerateId(s.idLength)
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_, err = stmt.Exec(id, p.Content, p.Expire)
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if err == nil {
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break
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} else if errors.Is(err, sqlite3.ErrConstraint) {
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continue
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} else {
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return "", err
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}
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}
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return id, nil
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}
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func (s *StorageSqlite) Get(id string) (*storage.Paste, error) {
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stmt, err := s.db.Prepare(`select content, expire from paste where id = ?`)
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if err != nil {
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return nil, err
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}
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rows, err := stmt.Query(id)
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var p storage.Paste
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if !rows.Next() {
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return nil, errors.New("No such paste")
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}
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if err = rows.Scan(&p.Content, &p.Expire); err != nil {
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return nil, err
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}
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return &p, nil
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}
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func (s *StorageSqlite) Purge() (int64, error) {
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stmt, err := s.db.Prepare(`delete from paste where expire < ?`)
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if err != nil {
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return 0, err
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}
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affected, err := stmt.Exec(time.Now().UnixMilli())
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if err != nil {
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return 0, err
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}
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if affectedRows, err := affected.RowsAffected() ; err != nil {
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return 0, err
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} else {
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return affectedRows, nil
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}
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}
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