mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-27 02:33:47 +01:00
a5852fd7e4
* remove unnecessary LOWER() db calls * warn during slow db queries * use bundb built-in exists function * add db block test * update account block query * add domain block db test * optimize domain block query * fix implementing wrong test * exclude most columns when checking block * go fmt * remote more unnecessary use of LOWER()
90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
package bundb
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
|
|
"github.com/superseriousbusiness/gotosocial/internal/db"
|
|
"github.com/uptrace/bun"
|
|
"github.com/uptrace/bun/dialect"
|
|
)
|
|
|
|
// DBConn wrapps a bun.DB conn to provide SQL-type specific additional functionality
|
|
type DBConn struct {
|
|
// TODO: move *Config here, no need to be in each struct type
|
|
|
|
errProc func(error) db.Error // errProc is the SQL-type specific error processor
|
|
*bun.DB // DB is the underlying bun.DB connection
|
|
}
|
|
|
|
// WrapDBConn @TODO
|
|
func WrapDBConn(dbConn *bun.DB) *DBConn {
|
|
var errProc func(error) db.Error
|
|
switch dbConn.Dialect().Name() {
|
|
case dialect.PG:
|
|
errProc = processPostgresError
|
|
case dialect.SQLite:
|
|
errProc = processSQLiteError
|
|
default:
|
|
panic("unknown dialect name: " + dbConn.Dialect().Name().String())
|
|
}
|
|
return &DBConn{
|
|
errProc: errProc,
|
|
DB: dbConn,
|
|
}
|
|
}
|
|
|
|
// RunInTx wraps execution of the supplied transaction function.
|
|
func (conn *DBConn) RunInTx(ctx context.Context, fn func(bun.Tx) error) db.Error {
|
|
// Acquire a new transaction
|
|
tx, err := conn.BeginTx(ctx, nil)
|
|
if err != nil {
|
|
return conn.ProcessError(err)
|
|
}
|
|
|
|
// Perform supplied transaction
|
|
if err = fn(tx); err != nil {
|
|
tx.Rollback() //nolint
|
|
return conn.ProcessError(err)
|
|
}
|
|
|
|
// Finally, commit transaction
|
|
err = tx.Commit()
|
|
return conn.ProcessError(err)
|
|
}
|
|
|
|
// ProcessError processes an error to replace any known values with our own db.Error types,
|
|
// making it easier to catch specific situations (e.g. no rows, already exists, etc)
|
|
func (conn *DBConn) ProcessError(err error) db.Error {
|
|
switch {
|
|
case err == nil:
|
|
return nil
|
|
case err == sql.ErrNoRows:
|
|
return db.ErrNoEntries
|
|
default:
|
|
return conn.errProc(err)
|
|
}
|
|
}
|
|
|
|
// Exists checks the results of a SelectQuery for the existence of the data in question, masking ErrNoEntries errors
|
|
func (conn *DBConn) Exists(ctx context.Context, query *bun.SelectQuery) (bool, db.Error) {
|
|
exists, err := query.Exists(ctx)
|
|
|
|
// Process error as our own and check if it exists
|
|
switch err := conn.ProcessError(err); err {
|
|
case nil:
|
|
return exists, nil
|
|
case db.ErrNoEntries:
|
|
return false, nil
|
|
default:
|
|
return false, err
|
|
}
|
|
}
|
|
|
|
// NotExists is the functional opposite of conn.Exists()
|
|
func (conn *DBConn) NotExists(ctx context.Context, query *bun.SelectQuery) (bool, db.Error) {
|
|
// Simply inverse of conn.exists()
|
|
exists, err := conn.Exists(ctx, query)
|
|
return !exists, err
|
|
}
|