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adapter.go
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adapter.go
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// Copyright 2019 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package terror
import (
"database/sql/driver"
"github.com/go-sql-driver/mysql"
"github.com/pingcap/errors"
)
// DBErrorAdaptArgs is an adapter to change raw database error to *Error object.
// If err is already an *Error object, return it directly.
func DBErrorAdaptArgs(err error, defaultErr *Error, args ...interface{}) error {
if err == nil {
return nil
}
if e, ok := err.(*Error); ok {
return e
}
causeErr := errors.Cause(err)
switch causeErr {
case driver.ErrBadConn:
return ErrDBBadConn.Delegate(err, args...)
case mysql.ErrInvalidConn:
return ErrDBInvalidConn.Delegate(err, args...)
default:
return defaultErr.Delegate(err, args...)
}
}
// DBErrorAdapt is an adapter to change raw database error to *Error object.
// If err is already an *Error object, return it directly.
func DBErrorAdapt(err error, scope ErrScope, defaultErr *Error, args ...interface{}) error {
return WithScope(DBErrorAdaptArgs(err, defaultErr, args...), scope)
}