217 lines
6.3 KiB
Go
217 lines
6.3 KiB
Go
package database
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import (
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"database/sql"
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"errors"
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"fmt"
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"slices"
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"time"
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"git.adyxax.org/adyxax/tfstated/pkg/model"
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"github.com/mattn/go-sqlite3"
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"go.n16f.net/uuid"
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)
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func (db *DB) CreateState(path string, accountId string, data []byte) (*model.Version, error) {
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encryptedData, err := db.dataEncryptionKey.EncryptAES256(data)
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if err != nil {
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return nil, fmt.Errorf("failed to encrypt state data: %w", err)
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}
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var stateId uuid.UUID
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if err := stateId.Generate(uuid.V7); err != nil {
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return nil, fmt.Errorf("failed to generate state id: %w", err)
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}
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var versionId uuid.UUID
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if err := versionId.Generate(uuid.V7); err != nil {
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return nil, fmt.Errorf("failed to generate version id: %w", err)
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}
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version := &model.Version{
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AccountId: accountId,
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Id: versionId,
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StateId: stateId,
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}
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return version, db.WithTransaction(func(tx *sql.Tx) error {
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_, err := tx.ExecContext(db.ctx, `INSERT INTO states(id, path) VALUES (?, ?)`, stateId, path)
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if err != nil {
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var sqliteErr sqlite3.Error
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if errors.As(err, &sqliteErr) {
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if sqliteErr.Code == sqlite3.ErrNo(sqlite3.ErrConstraint) {
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version = nil
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return nil
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}
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}
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return fmt.Errorf("failed to insert new state: %w", err)
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}
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_, err = tx.ExecContext(db.ctx,
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`INSERT INTO versions(id, account_id, data, state_id)
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VALUES (:id, :accountID, :data, :stateID)`,
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sql.Named("accountID", accountId),
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sql.Named("data", encryptedData),
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sql.Named("id", versionId),
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sql.Named("stateID", stateId))
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if err != nil {
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return fmt.Errorf("failed to insert new state version: %w", err)
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}
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return nil
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})
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}
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// returns true in case of successful deletion
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func (db *DB) DeleteState(path string) (bool, error) {
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result, err := db.Exec(`DELETE FROM states WHERE path = ?;`, path)
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if err != nil {
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return false, err
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}
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n, err := result.RowsAffected()
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if err != nil {
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return false, err
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}
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return n == 1, nil
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}
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func (db *DB) GetState(path string) ([]byte, error) {
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var encryptedData []byte
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err := db.QueryRow(
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`SELECT versions.data
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FROM versions
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JOIN states ON states.id = versions.state_id
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WHERE states.path = ?
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ORDER BY versions.id DESC
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LIMIT 1;`,
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path).Scan(&encryptedData)
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return []byte{}, nil
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}
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return nil, err
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}
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if encryptedData == nil {
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return []byte{}, nil
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}
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return db.dataEncryptionKey.DecryptAES256(encryptedData)
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}
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func (db *DB) LoadStateById(stateId uuid.UUID) (*model.State, error) {
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state := model.State{
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Id: stateId,
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}
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var (
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created int64
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updated int64
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)
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err := db.QueryRow(
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`SELECT created, lock, path, updated FROM states WHERE id = ?;`,
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stateId).Scan(&created, &state.Lock, &state.Path, &updated)
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return nil, nil
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}
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return nil, fmt.Errorf("failed to load state id %s from database: %w", stateId, err)
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}
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state.Created = time.Unix(created, 0)
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state.Updated = time.Unix(updated, 0)
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return &state, nil
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}
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func (db *DB) LoadStates() ([]model.State, error) {
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rows, err := db.Query(
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`SELECT created, id, lock, path, updated FROM states;`)
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if err != nil {
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return nil, fmt.Errorf("failed to load states from database: %w", err)
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}
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defer rows.Close()
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states := make([]model.State, 0)
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for rows.Next() {
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var (
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state model.State
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created int64
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updated int64
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)
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err = rows.Scan(&created, &state.Id, &state.Lock, &state.Path, &updated)
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if err != nil {
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return nil, fmt.Errorf("failed to load state from row: %w", err)
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}
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state.Created = time.Unix(created, 0)
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state.Updated = time.Unix(updated, 0)
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states = append(states, state)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("failed to load states from rows: %w", err)
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}
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return states, nil
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}
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// returns true in case of lock mismatch
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func (db *DB) SetState(path string, accountId string, data []byte, lock string) (bool, error) {
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encryptedData, err := db.dataEncryptionKey.EncryptAES256(data)
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if err != nil {
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return false, fmt.Errorf("failed to encrypt state data: %w", err)
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}
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ret := false
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return ret, db.WithTransaction(func(tx *sql.Tx) error {
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var (
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stateId string
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lockData []byte
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)
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if err = tx.QueryRowContext(db.ctx, `SELECT id, lock->>'ID' FROM states WHERE path = ?;`, path).Scan(&stateId, &lockData); err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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var stateUUID uuid.UUID
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if err := stateUUID.Generate(uuid.V7); err != nil {
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return fmt.Errorf("failed to generate state id: %w", err)
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}
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_, err = tx.ExecContext(db.ctx, `INSERT INTO states(id, path) VALUES (?, ?)`, stateUUID, path)
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if err != nil {
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return fmt.Errorf("failed to insert new state: %w", err)
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}
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stateId = stateUUID.String()
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} else {
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return err
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}
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}
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if lock != "" && slices.Compare([]byte(lock), lockData) != 0 {
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err = fmt.Errorf("failed to update state: lock ID mismatch")
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ret = true
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return err
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}
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var versionId uuid.UUID
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if err := versionId.Generate(uuid.V7); err != nil {
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return fmt.Errorf("failed to generate version id: %w", err)
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}
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_, err = tx.ExecContext(db.ctx,
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`INSERT INTO versions(id, account_id, state_id, data, lock)
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SELECT :versionId, :accountId, :stateId, :data, lock
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FROM states
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WHERE states.id = :stateId;`,
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sql.Named("accountId", accountId),
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sql.Named("data", encryptedData),
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sql.Named("stateId", stateId),
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sql.Named("versionId", versionId))
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if err != nil {
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return fmt.Errorf("failed to insert new state version: %w", err)
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}
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_, err = tx.ExecContext(db.ctx,
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`UPDATE states SET updated = ? WHERE id = ?;`,
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time.Now().UTC().Unix(),
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stateId)
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if err != nil {
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return fmt.Errorf("failed to touch updated for state: %w", err)
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}
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_, err = tx.ExecContext(db.ctx,
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`DELETE FROM versions
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WHERE state_id = (SELECT id
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FROM states
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WHERE path = :path)
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AND id < (SELECT MIN(id)
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FROM(SELECT versions.id
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FROM versions
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JOIN states ON states.id = versions.state_id
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WHERE states.path = :path
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ORDER BY versions.id DESC
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LIMIT :limit));`,
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sql.Named("limit", db.versionsHistoryLimit),
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sql.Named("path", path),
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)
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return err
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})
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}
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