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error.go
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error.go
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/*
* Copyright 2020 The Dragonfly Authors
*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dferrors
import (
"fmt"
"d7y.io/dragonfly/v2/pkg/rpc/base"
"github.com/pkg/errors"
)
// common and framework errors
var (
ErrInvalidArgument = errors.New("invalid argument")
ErrDataNotFound = errors.New("data not found")
ErrEmptyValue = errors.New("empty value")
ErrConvertFailed = errors.New("convert failed")
ErrEndOfStream = errors.New("end of stream")
ErrNoCandidateNode = errors.New("no candidate server node")
)
func IsEndOfStream(err error) bool {
return err == ErrEndOfStream
}
type DfError struct {
Code base.Code
Message string
}
func (s *DfError) Error() string {
return fmt.Sprintf("[%d]%s", s.Code, s.Message)
}
func New(code base.Code, msg string) *DfError {
return &DfError{
Code: code,
Message: msg,
}
}
func Newf(code base.Code, format string, a ...interface{}) *DfError {
return &DfError{
Code: code,
Message: fmt.Sprintf(format, a...),
}
}
func CheckError(err error, code base.Code) bool {
if err == nil {
return false
}
e, ok := err.(*DfError)
return ok && e.Code == code
}