storj/satellite/satellitedb/dbx/gen.go

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2019-01-24 20:15:10 +00:00
// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package satellitedb
import (
"context"
"fmt"
"github.com/zeebo/errs"
)
//go:generate dbx.v1 schema -d postgres satellitedb.dbx .
//go:generate dbx.v1 golang -d postgres satellitedb.dbx .
func init() {
// catch dbx errors
class := errs.Class("satellitedb")
WrapErr = func(e *Error) error {
switch e.Code {
case ErrorCode_NoRows:
return e.Err
case ErrorCode_ConstraintViolation:
return class.Wrap(&constraintError{e.Constraint, e.Err})
}
return class.Wrap(e)
}
}
// Unwrap returns the underlying error.
func (e *Error) Unwrap() error { return e.Err }
// Cause returns the underlying error.
func (e *Error) Cause() error { return e.Err }
type constraintError struct {
constraint string
err error
}
// Unwrap returns the underlying error.
func (err *constraintError) Unwrap() error { return err.err }
// Cause returns the underlying error.
func (err *constraintError) Cause() error { return err.err }
// Error implements the error interface.
func (err *constraintError) Error() string {
return fmt.Sprintf("violates constraint %q: %v", err.constraint, err.err)
}
// WithTx wraps DB code in a transaction
func (db *DB) WithTx(ctx context.Context, fn func(context.Context, *Tx) error) (err error) {
tx, err := db.Open(ctx)
if err != nil {
return err
}
defer func() {
if err == nil {
err = tx.Commit()
} else {
err = errs.Combine(err, tx.Rollback())
}
}()
return fn(ctx, tx)
}