agola/internal/util/errors.go

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// Copyright 2019 Sorint.lab
//
// 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 util
import (
"strings"
errors "golang.org/x/xerrors"
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)
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// Errors is an error that contains multiple errors
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type Errors struct {
Errs []error
}
func (e *Errors) IsErr() bool {
return len(e.Errs) > 0
}
func (e *Errors) Append(err error) {
e.Errs = append(e.Errs, err)
}
func (e *Errors) Error() string {
errs := []string{}
for _, err := range e.Errs {
errs = append(errs, err.Error())
}
return strings.Join(errs, ", ")
}
func (e *Errors) Equal(e2 error) bool {
errs1 := []string{}
errs2 := []string{}
for _, err := range e.Errs {
errs1 = append(errs1, err.Error())
}
if es2, ok := e2.(*Errors); ok {
for _, err := range es2.Errs {
errs2 = append(errs2, err.Error())
}
} else {
errs2 = append(errs2, e2.Error())
}
return CompareStringSliceNoOrder(errs1, errs2)
}
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// ErrBadRequest represent an error caused by a bad command request
// it's used to differentiate an internal error from an user error
type ErrBadRequest struct {
Err error
}
func (e *ErrBadRequest) Error() string {
return e.Err.Error()
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}
func NewErrBadRequest(err error) *ErrBadRequest {
return &ErrBadRequest{Err: err}
}
func (*ErrBadRequest) Is(err error) bool {
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_, ok := err.(*ErrBadRequest)
return ok
}
func IsBadRequest(err error) bool {
return errors.Is(err, &ErrBadRequest{})
}
// ErrNotExist represent a not exist error
// it's used to differentiate an internal error from an user error
type ErrNotExist struct {
Err error
}
func (e *ErrNotExist) Error() string {
return e.Err.Error()
}
func NewErrNotExist(err error) *ErrNotExist {
return &ErrNotExist{Err: err}
}
func (*ErrNotExist) Is(err error) bool {
_, ok := err.(*ErrNotExist)
return ok
}
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func IsNotExist(err error) bool {
return errors.Is(err, &ErrNotExist{})
}
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// ErrForbidden represent an error caused by an forbidden operation
// it's used to differentiate an internal error from an user error
type ErrForbidden struct {
Err error
}
func (e *ErrForbidden) Error() string {
return e.Err.Error()
}
func NewErrForbidden(err error) *ErrForbidden {
return &ErrForbidden{Err: err}
}
func (*ErrForbidden) Is(err error) bool {
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_, ok := err.(*ErrForbidden)
return ok
}
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func IsForbidden(err error) bool {
return errors.Is(err, &ErrForbidden{})
}
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// ErrUnauthorized represent an error caused by an unauthorized request
// it's used to differentiate an internal error from an user error
type ErrUnauthorized struct {
Err error
}
func (e *ErrUnauthorized) Error() string {
return e.Err.Error()
}
func NewErrUnauthorized(err error) *ErrUnauthorized {
return &ErrUnauthorized{Err: err}
}
func (*ErrUnauthorized) Is(err error) bool {
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_, ok := err.(*ErrUnauthorized)
return ok
}
func IsUnauthorized(err error) bool {
return errors.Is(err, &ErrUnauthorized{})
}
type ErrInternal struct {
Err error
}
// ErrInternal represent an internal error that should be returned to the user
func (e *ErrInternal) Error() string {
return e.Err.Error()
}
func NewErrInternal(err error) *ErrInternal {
return &ErrInternal{Err: err}
}
func (*ErrInternal) Is(err error) bool {
_, ok := err.(*ErrInternal)
return ok
}
func IsInternal(err error) bool {
return errors.Is(err, &ErrInternal{})
}