104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
// 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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//
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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
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// the Free Software Foundation, either version 3 of the License, or
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// (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,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package bundb
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import (
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"database/sql/driver"
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"errors"
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"github.com/jackc/pgx/v5/pgconn"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"modernc.org/sqlite"
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sqlite3 "modernc.org/sqlite/lib"
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)
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// errBusy is a sentinel error indicating
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// busy database (e.g. retry needed).
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var errBusy = errors.New("busy")
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// processPostgresError processes an error, replacing any postgres specific errors with our own error type
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func processPostgresError(err error) error {
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// Catch nil errs.
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if err == nil {
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return nil
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}
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// Attempt to cast as postgres
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pgErr, ok := err.(*pgconn.PgError)
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if !ok {
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return err
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}
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// Handle supplied error code:
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// (https://www.postgresql.org/docs/10/errcodes-appendix.html)
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switch pgErr.Code { //nolint
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case "23505" /* unique_violation */ :
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return db.ErrAlreadyExists
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}
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return err
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}
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// processSQLiteError processes an error, replacing any sqlite specific errors with our own error type
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func processSQLiteError(err error) error {
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// Catch nil errs.
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if err == nil {
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return nil
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}
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// Attempt to cast as sqlite
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sqliteErr, ok := err.(*sqlite.Error)
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if !ok {
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return err
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}
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// Handle supplied error code:
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switch sqliteErr.Code() {
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case sqlite3.SQLITE_CONSTRAINT_UNIQUE,
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sqlite3.SQLITE_CONSTRAINT_PRIMARYKEY:
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return db.ErrAlreadyExists
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case sqlite3.SQLITE_BUSY:
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return errBusy
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case sqlite3.SQLITE_BUSY_TIMEOUT:
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return db.ErrBusyTimeout
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// WORKAROUND:
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// text copied from matrix dev chat:
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//
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// okay i've found a workaround for now. so between
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// v1.29.0 and v1.29.2 (modernc.org/sqlite) is that
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// slightly tweaked interruptOnDone() behaviour, which
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// causes interrupt to (imo, correctly) get called when
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// a context is cancelled to cancel the running query. the
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// issue is that every single query after that point seems
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// to still then return interrupted. so as you thought,
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// maybe that query count isn't being decremented. i don't
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// think it's our code, but i haven't ruled it out yet.
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//
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// the workaround for now is adding to our sqlite error
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// processor to replace an SQLITE_INTERRUPTED code with
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// driver.ErrBadConn, which hints to the golang sql package
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// that the conn needs to be closed and a new one opened
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//
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case sqlite3.SQLITE_INTERRUPT:
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return driver.ErrBadConn
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}
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return err
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}
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