mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-12-03 06:48:08 -06:00
[experiment] add alternative wasm sqlite3 implementation available via build-tag (#2863)
This allows for building GoToSocial with [SQLite transpiled to WASM](https://github.com/ncruces/go-sqlite3) and accessed through [Wazero](https://wazero.io/).
This commit is contained in:
kim
GitHub
parent
cce21c11cb
commit
1e7b32490d
398 changed files with 86174 additions and 684 deletions
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@ -74,6 +74,7 @@ func (suite *AdminTestSuite) TestCreateInstanceAccount() {
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// we need to take an empty db for this...
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testrig.StandardDBTeardown(suite.db)
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// ...with tables created but no data
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suite.db = testrig.NewTestDB(&suite.state)
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testrig.CreateTestTables(suite.db)
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// make sure there's no instance account in the db yet
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@ -48,8 +48,6 @@ import (
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"github.com/uptrace/bun/dialect/pgdialect"
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"github.com/uptrace/bun/dialect/sqlitedialect"
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"github.com/uptrace/bun/migrate"
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"modernc.org/sqlite"
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)
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// DBService satisfies the DB interface
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@ -133,12 +131,12 @@ func NewBunDBService(ctx context.Context, state *state.State) (db.DB, error) {
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switch t {
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case "postgres":
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db, err = pgConn(ctx, state)
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db, err = pgConn(ctx)
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if err != nil {
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return nil, err
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}
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case "sqlite":
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db, err = sqliteConn(ctx, state)
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db, err = sqliteConn(ctx)
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if err != nil {
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return nil, err
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}
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@ -295,7 +293,7 @@ func NewBunDBService(ctx context.Context, state *state.State) (db.DB, error) {
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return ps, nil
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}
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func pgConn(ctx context.Context, state *state.State) (*bun.DB, error) {
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func pgConn(ctx context.Context) (*bun.DB, error) {
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opts, err := deriveBunDBPGOptions() //nolint:contextcheck
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if err != nil {
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return nil, fmt.Errorf("could not create bundb postgres options: %w", err)
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@ -326,7 +324,7 @@ func pgConn(ctx context.Context, state *state.State) (*bun.DB, error) {
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return db, nil
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}
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func sqliteConn(ctx context.Context, state *state.State) (*bun.DB, error) {
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func sqliteConn(ctx context.Context) (*bun.DB, error) {
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// validate db address has actually been set
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address := config.GetDbAddress()
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if address == "" {
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@ -339,9 +337,6 @@ func sqliteConn(ctx context.Context, state *state.State) (*bun.DB, error) {
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// Open new DB instance
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sqldb, err := sql.Open("sqlite-gts", address)
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if err != nil {
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if errWithCode, ok := err.(*sqlite.Error); ok {
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err = errors.New(sqlite.ErrorCodeString[errWithCode.Code()])
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}
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return nil, fmt.Errorf("could not open sqlite db with address %s: %w", address, err)
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}
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@ -356,11 +351,9 @@ func sqliteConn(ctx context.Context, state *state.State) (*bun.DB, error) {
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// ping to check the db is there and listening
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if err := db.PingContext(ctx); err != nil {
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if errWithCode, ok := err.(*sqlite.Error); ok {
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err = errors.New(sqlite.ErrorCodeString[errWithCode.Code()])
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}
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return nil, fmt.Errorf("sqlite ping: %w", err)
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}
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log.Infof(ctx, "connected to SQLITE database with address %s", address)
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return db, nil
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@ -528,12 +521,8 @@ func buildSQLiteAddress(addr string) string {
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// Use random name for in-memory instead of ':memory:', so
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// multiple in-mem databases can be created without conflict.
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addr = uuid.NewString()
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// in-mem-specific preferences
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// (shared cache so that tests don't fail)
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prefs.Add("mode", "memory")
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prefs.Add("cache", "shared")
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addr = "/" + uuid.NewString()
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prefs.Add("vfs", "memdb")
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}
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if dur := config.GetDbSqliteBusyTimeout(); dur > 0 {
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@ -18,350 +18,14 @@
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package bundb
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import (
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"context"
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"database/sql"
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"database/sql/driver"
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"time"
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_ "unsafe" // linkname shenanigans
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pgx "github.com/jackc/pgx/v5/stdlib"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"modernc.org/sqlite"
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"github.com/superseriousbusiness/gotosocial/internal/db/postgres"
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"github.com/superseriousbusiness/gotosocial/internal/db/sqlite"
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)
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var (
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// global SQL driver instances.
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postgresDriver = pgx.GetDefaultDriver()
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sqliteDriver = getSQLiteDriver()
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// check the postgres connection
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// conforms to our conn{} interface.
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// (note SQLite doesn't export their
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// conn type, and gets checked in
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// tests very regularly anywho).
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_ conn = (*pgx.Conn)(nil)
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)
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//go:linkname getSQLiteDriver modernc.org/sqlite.newDriver
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func getSQLiteDriver() *sqlite.Driver
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func init() {
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sql.Register("pgx-gts", &PostgreSQLDriver{})
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sql.Register("sqlite-gts", &SQLiteDriver{})
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}
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// PostgreSQLDriver is our own wrapper around the
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// pgx/stdlib.Driver{} type in order to wrap further
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// SQL driver types with our own err processing.
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type PostgreSQLDriver struct{}
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func (d *PostgreSQLDriver) Open(name string) (driver.Conn, error) {
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c, err := postgresDriver.Open(name)
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if err != nil {
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return nil, err
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}
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return &PostgreSQLConn{conn: c.(conn)}, nil
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}
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type PostgreSQLConn struct{ conn }
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func (c *PostgreSQLConn) Begin() (driver.Tx, error) {
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return c.BeginTx(context.Background(), driver.TxOptions{})
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}
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func (c *PostgreSQLConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
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tx, err := c.conn.BeginTx(ctx, opts)
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err = processPostgresError(err)
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if err != nil {
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return nil, err
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}
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return &PostgreSQLTx{tx}, nil
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}
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func (c *PostgreSQLConn) Prepare(query string) (driver.Stmt, error) {
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return c.PrepareContext(context.Background(), query)
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}
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func (c *PostgreSQLConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
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st, err := c.conn.PrepareContext(ctx, query)
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err = processPostgresError(err)
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if err != nil {
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return nil, err
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}
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return &PostgreSQLStmt{stmt: st.(stmt)}, nil
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}
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func (c *PostgreSQLConn) Exec(query string, args []driver.Value) (driver.Result, error) {
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return c.ExecContext(context.Background(), query, toNamedValues(args))
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}
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func (c *PostgreSQLConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
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result, err := c.conn.ExecContext(ctx, query, args)
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err = processPostgresError(err)
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return result, err
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}
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func (c *PostgreSQLConn) Query(query string, args []driver.Value) (driver.Rows, error) {
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return c.QueryContext(context.Background(), query, toNamedValues(args))
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}
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func (c *PostgreSQLConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
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rows, err := c.conn.QueryContext(ctx, query, args)
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err = processPostgresError(err)
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return rows, err
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}
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func (c *PostgreSQLConn) Close() error {
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return c.conn.Close()
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}
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type PostgreSQLTx struct{ driver.Tx }
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func (tx *PostgreSQLTx) Commit() error {
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err := tx.Tx.Commit()
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return processPostgresError(err)
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}
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func (tx *PostgreSQLTx) Rollback() error {
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err := tx.Tx.Rollback()
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return processPostgresError(err)
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}
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type PostgreSQLStmt struct{ stmt }
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func (stmt *PostgreSQLStmt) Exec(args []driver.Value) (driver.Result, error) {
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return stmt.ExecContext(context.Background(), toNamedValues(args))
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}
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func (stmt *PostgreSQLStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
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res, err := stmt.stmt.ExecContext(ctx, args)
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err = processPostgresError(err)
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return res, err
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}
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func (stmt *PostgreSQLStmt) Query(args []driver.Value) (driver.Rows, error) {
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return stmt.QueryContext(context.Background(), toNamedValues(args))
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}
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func (stmt *PostgreSQLStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
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rows, err := stmt.stmt.QueryContext(ctx, args)
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err = processPostgresError(err)
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return rows, err
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}
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// SQLiteDriver is our own wrapper around the
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// sqlite.Driver{} type in order to wrap further
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// SQL driver types with our own functionality,
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// e.g. hooks, retries and err processing.
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type SQLiteDriver struct{}
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func (d *SQLiteDriver) Open(name string) (driver.Conn, error) {
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c, err := sqliteDriver.Open(name)
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if err != nil {
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return nil, err
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}
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return &SQLiteConn{conn: c.(conn)}, nil
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}
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type SQLiteConn struct{ conn }
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func (c *SQLiteConn) Begin() (driver.Tx, error) {
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return c.BeginTx(context.Background(), driver.TxOptions{})
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}
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func (c *SQLiteConn) BeginTx(ctx context.Context, opts driver.TxOptions) (tx driver.Tx, err error) {
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err = retryOnBusy(ctx, func() error {
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tx, err = c.conn.BeginTx(ctx, opts)
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err = processSQLiteError(err)
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return err
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})
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if err != nil {
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return nil, err
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}
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return &SQLiteTx{Context: ctx, Tx: tx}, nil
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}
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func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) {
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return c.PrepareContext(context.Background(), query)
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}
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func (c *SQLiteConn) PrepareContext(ctx context.Context, query string) (st driver.Stmt, err error) {
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err = retryOnBusy(ctx, func() error {
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st, err = c.conn.PrepareContext(ctx, query)
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err = processSQLiteError(err)
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return err
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})
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if err != nil {
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return nil, err
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}
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return &SQLiteStmt{st.(stmt)}, nil
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}
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func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error) {
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return c.ExecContext(context.Background(), query, toNamedValues(args))
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}
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func (c *SQLiteConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (result driver.Result, err error) {
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err = retryOnBusy(ctx, func() error {
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result, err = c.conn.ExecContext(ctx, query, args)
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err = processSQLiteError(err)
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return err
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})
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return
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}
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func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, error) {
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return c.QueryContext(context.Background(), query, toNamedValues(args))
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}
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func (c *SQLiteConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
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err = retryOnBusy(ctx, func() error {
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rows, err = c.conn.QueryContext(ctx, query, args)
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err = processSQLiteError(err)
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return err
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})
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return
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}
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func (c *SQLiteConn) Close() error {
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// see: https://www.sqlite.org/pragma.html#pragma_optimize
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const onClose = "PRAGMA analysis_limit=1000; PRAGMA optimize;"
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_, _ = c.conn.ExecContext(context.Background(), onClose, nil)
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return c.conn.Close()
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}
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type SQLiteTx struct {
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context.Context
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driver.Tx
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}
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func (tx *SQLiteTx) Commit() (err error) {
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err = retryOnBusy(tx.Context, func() error {
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err = tx.Tx.Commit()
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err = processSQLiteError(err)
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return err
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})
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return
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}
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func (tx *SQLiteTx) Rollback() (err error) {
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err = retryOnBusy(tx.Context, func() error {
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err = tx.Tx.Rollback()
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err = processSQLiteError(err)
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return err
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})
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return
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}
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type SQLiteStmt struct{ stmt }
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func (stmt *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) {
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return stmt.ExecContext(context.Background(), toNamedValues(args))
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}
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func (stmt *SQLiteStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (res driver.Result, err error) {
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err = retryOnBusy(ctx, func() error {
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res, err = stmt.stmt.ExecContext(ctx, args)
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err = processSQLiteError(err)
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return err
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})
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return
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}
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func (stmt *SQLiteStmt) Query(args []driver.Value) (driver.Rows, error) {
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return stmt.QueryContext(context.Background(), toNamedValues(args))
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}
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func (stmt *SQLiteStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (rows driver.Rows, err error) {
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err = retryOnBusy(ctx, func() error {
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rows, err = stmt.stmt.QueryContext(ctx, args)
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err = processSQLiteError(err)
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return err
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})
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return
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}
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type conn interface {
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driver.Conn
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driver.ConnPrepareContext
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driver.ExecerContext
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driver.QueryerContext
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driver.ConnBeginTx
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}
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type stmt interface {
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driver.Stmt
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driver.StmtExecContext
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driver.StmtQueryContext
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}
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// retryOnBusy will retry given function on returned 'errBusy'.
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func retryOnBusy(ctx context.Context, fn func() error) error {
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if err := fn(); err != errBusy {
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return err
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}
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return retryOnBusySlow(ctx, fn)
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}
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// retryOnBusySlow is the outlined form of retryOnBusy, to allow the fast path (i.e. only
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// 1 attempt) to be inlined, leaving the slow retry loop to be a separate function call.
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func retryOnBusySlow(ctx context.Context, fn func() error) error {
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var backoff time.Duration
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for i := 0; ; i++ {
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// backoff according to a multiplier of 2ms * 2^2n,
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// up to a maximum possible backoff time of 5 minutes.
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//
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// this works out as the following:
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// 4ms
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// 16ms
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// 64ms
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// 256ms
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// 1.024s
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// 4.096s
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// 16.384s
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// 1m5.536s
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// 4m22.144s
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backoff = 2 * time.Millisecond * (1 << (2*i + 1))
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if backoff >= 5*time.Minute {
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break
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}
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select {
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// Context cancelled.
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case <-ctx.Done():
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return ctx.Err()
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// Backoff for some time.
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case <-time.After(backoff):
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}
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// Perform func.
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err := fn()
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if err != errBusy {
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// May be nil, or may be
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// some other error, either
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// way return here.
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return err
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}
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}
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return gtserror.Newf("%w (waited > %s)", db.ErrBusyTimeout, backoff)
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}
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// toNamedValues converts older driver.Value types to driver.NamedValue types.
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func toNamedValues(args []driver.Value) []driver.NamedValue {
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if args == nil {
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return nil
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}
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args2 := make([]driver.NamedValue, len(args))
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for i := range args {
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args2[i] = driver.NamedValue{
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Ordinal: i + 1,
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Value: args[i],
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}
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}
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return args2
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// register our SQL driver implementations.
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sql.Register("pgx-gts", &postgres.Driver{})
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sql.Register("sqlite-gts", &sqlite.Driver{})
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}
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@ -1,105 +0,0 @@
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// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
|
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//
|
||||
// This program is free software: you can redistribute it and/or modify
|
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// it under the terms of the GNU Affero General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
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//
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// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
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|
||||
package bundb
|
||||
|
||||
import (
|
||||
"database/sql/driver"
|
||||
"errors"
|
||||
|
||||
"github.com/jackc/pgx/v5/pgconn"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/db"
|
||||
"modernc.org/sqlite"
|
||||
sqlite3 "modernc.org/sqlite/lib"
|
||||
)
|
||||
|
||||
// errBusy is a sentinel error indicating
|
||||
// busy database (e.g. retry needed).
|
||||
var errBusy = errors.New("busy")
|
||||
|
||||
// processPostgresError processes an error, replacing any postgres specific errors with our own error type
|
||||
func processPostgresError(err error) error {
|
||||
// Catch nil errs.
|
||||
if err == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Attempt to cast as postgres
|
||||
pgErr, ok := err.(*pgconn.PgError)
|
||||
if !ok {
|
||||
return err
|
||||
}
|
||||
|
||||
// Handle supplied error code:
|
||||
// (https://www.postgresql.org/docs/10/errcodes-appendix.html)
|
||||
switch pgErr.Code { //nolint
|
||||
case "23505" /* unique_violation */ :
|
||||
return db.ErrAlreadyExists
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
// processSQLiteError processes an error, replacing any sqlite specific errors with our own error type
|
||||
func processSQLiteError(err error) error {
|
||||
// Catch nil errs.
|
||||
if err == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Attempt to cast as sqlite
|
||||
sqliteErr, ok := err.(*sqlite.Error)
|
||||
if !ok {
|
||||
return err
|
||||
}
|
||||
|
||||
// Handle supplied error code:
|
||||
switch sqliteErr.Code() {
|
||||
case sqlite3.SQLITE_CONSTRAINT_UNIQUE,
|
||||
sqlite3.SQLITE_CONSTRAINT_PRIMARYKEY:
|
||||
return db.ErrAlreadyExists
|
||||
case sqlite3.SQLITE_BUSY,
|
||||
sqlite3.SQLITE_BUSY_SNAPSHOT,
|
||||
sqlite3.SQLITE_BUSY_RECOVERY:
|
||||
return errBusy
|
||||
case sqlite3.SQLITE_BUSY_TIMEOUT:
|
||||
return db.ErrBusyTimeout
|
||||
|
||||
// WORKAROUND:
|
||||
// text copied from matrix dev chat:
|
||||
//
|
||||
// okay i've found a workaround for now. so between
|
||||
// v1.29.0 and v1.29.2 (modernc.org/sqlite) is that
|
||||
// slightly tweaked interruptOnDone() behaviour, which
|
||||
// causes interrupt to (imo, correctly) get called when
|
||||
// a context is cancelled to cancel the running query. the
|
||||
// issue is that every single query after that point seems
|
||||
// to still then return interrupted. so as you thought,
|
||||
// maybe that query count isn't being decremented. i don't
|
||||
// think it's our code, but i haven't ruled it out yet.
|
||||
//
|
||||
// the workaround for now is adding to our sqlite error
|
||||
// processor to replace an SQLITE_INTERRUPTED code with
|
||||
// driver.ErrBadConn, which hints to the golang sql package
|
||||
// that the conn needs to be closed and a new one opened
|
||||
//
|
||||
case sqlite3.SQLITE_INTERRUPT:
|
||||
return driver.ErrBadConn
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
|
@ -19,6 +19,7 @@ package bundb_test
|
|||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/suite"
|
||||
|
|
@ -82,10 +83,20 @@ func (suite *TagTestSuite) TestPutTag() {
|
|||
|
||||
// Subsequent inserts should fail
|
||||
// since all these tags are equivalent.
|
||||
suite.ErrorIs(err, db.ErrAlreadyExists)
|
||||
if !suite.ErrorIs(err, db.ErrAlreadyExists) {
|
||||
suite.T().Logf("%T(%v) %v", err, err, unwrap(err))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestTagTestSuite(t *testing.T) {
|
||||
suite.Run(t, new(TagTestSuite))
|
||||
}
|
||||
|
||||
func unwrap(err error) (errs []error) {
|
||||
for err != nil {
|
||||
errs = append(errs, err)
|
||||
err = errors.Unwrap(err)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue