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error.go
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error.go
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// Copyright 2019 The OpenSDS 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.
/*
This module implements the common data structure.
*/
package model
import (
"encoding/json"
"errors"
"fmt"
"github.com/emicklei/go-restful"
log "github.com/sirupsen/logrus"
)
const (
// ErrorBadRequest
ErrorBadRequest = 400
// ErrorUnauthorized
ErrorUnauthorized = 401
// ErrorForbidden
ErrorForbidden = 403
// ErrorNotFound
ErrorNotFound = 404
// ErrorInternalServer
ErrorInternalServer = 500
// ErrorNotImplemented
ErrorNotImplemented = 501
)
// ErrorSpec describes Detailed HTTP error response, which consists of a HTTP
// status code, and a custom error message unique for each failure case.
type ErrorSpec struct {
Code int `json:"code,omitempty"`
Message string `json:"message,omitempty"`
}
// ErrorBadRequestStatus
func ErrorBadRequestStatus(message string) []byte {
return errorStatus(ErrorBadRequest, message)
}
// ErrorForbiddenStatus
func ErrorForbiddenStatus(message string) []byte {
return errorStatus(ErrorForbidden, message)
}
// ErrorUnauthorizedStatus
func ErrorUnauthorizedStatus(message string) []byte {
return errorStatus(ErrorUnauthorized, message)
}
// ErrorNotFoundStatus
func ErrorNotFoundStatus(message string) []byte {
return errorStatus(ErrorNotFound, message)
}
// ErrorInternalServerStatus
func ErrorInternalServerStatus(message string) []byte {
return errorStatus(ErrorInternalServer, message)
}
// ErrorNotImplementedStatus
func ErrorNotImplementedStatus(message string) []byte {
return errorStatus(ErrorNotImplemented, message)
}
func errorStatus(code int, message string) []byte {
errStatus := &ErrorSpec{
Code: code,
Message: message,
}
// Mashal the error status.
body, err := json.Marshal(errStatus)
if err != nil {
return []byte("Failed to mashal error response: " + err.Error())
}
return body
}
/*
func HttpError(ctx *context.Context, code int, format string, a ...interface{}) error {
ctx.Output.SetStatus(code)
msg := fmt.Sprintf(format, a...)
ctx.Output.Body(errorStatus(code, msg))
errInfo := fmt.Sprintf("Code:%d, Reason:%s", code, msg)
log.Error(errInfo)
return fmt.Errorf(errInfo)
}
*/
func HttpError(res *restful.Response, code int, format string, a ...interface{}) error {
msg := fmt.Sprintf(format, a...)
res.WriteError(code, errors.New(msg))
errInfo := fmt.Sprintf("Code:%d, Reason:%s", code, msg)
log.Error(errInfo)
return fmt.Errorf(errInfo)
}
// Volume group error
type NotImplementError struct {
S string
}
func (e *NotImplementError) Error() string {
return e.S
}
type NotFoundError struct {
S string
}
func NewNotFoundError(msg string) error {
return &NotFoundError{S: msg}
}
func (e *NotFoundError) Error() string {
return e.S
}