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errors.go
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/
errors.go
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// Copyright 2014-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file 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 utils
import (
"fmt"
"strings"
)
type Retriable interface {
Retry() bool
}
type DefaultRetriable struct {
retry bool
}
func (dr DefaultRetriable) Retry() bool {
return dr.retry
}
func NewRetriable(retry bool) Retriable {
return DefaultRetriable{
retry: retry,
}
}
type RetriableError interface {
Retriable
error
}
type DefaultRetriableError struct {
Retriable
error
}
func NewRetriableError(retriable Retriable, err error) RetriableError {
return &DefaultRetriableError{
retriable,
err,
}
}
type AttributeError struct {
err string
}
func (e AttributeError) Error() string {
return e.err
}
func NewAttributeError(err string) AttributeError {
return AttributeError{err}
}
// MultiErr Implements error
type MultiErr struct {
errors []error
}
func (me MultiErr) Error() string {
ret := make([]string, len(me.errors)+1)
ret[0] = "Multiple error:"
for ndx, err := range me.errors {
ret[ndx+1] = fmt.Sprintf("\t%d: %s", ndx, err.Error())
}
return strings.Join(ret, "\n")
}
func NewMultiError(errs ...error) error {
errors := make([]error, 0, len(errs))
for _, err := range errs {
if err != nil {
errors = append(errors, err)
}
}
return MultiErr{errors}
}