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/******************************************************************************
*
* Copyright 2018 Stefan Majewsky <majewsky@gmx.net>
*
* 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 schwift
import (
"errors"
"fmt"
"net/http"
"strconv"
"strings"
)
var (
//ErrNoContainerName is returned by Request.Do() if ObjectName is given, but
//ContainerName is empty.
ErrNoContainerName = errors.New("missing container name")
//ErrMalformedContainerName is returned by Request.Do() if ContainerName
//contains slashes.
ErrMalformedContainerName = errors.New("container name may not contain slashes")
)
//UnexpectedStatusCodeError is generated when a request to Swift does not yield
//a response with the expected successful status code.
type UnexpectedStatusCodeError struct {
ExpectedStatusCodes []int
ActualResponse *http.Response
ResponseBody []byte
}
//Error implements the builtin/error interface.
func (e UnexpectedStatusCodeError) Error() string {
codeStrs := make([]string, len(e.ExpectedStatusCodes))
for idx, code := range e.ExpectedStatusCodes {
codeStrs[idx] = strconv.Itoa(code)
}
msg := fmt.Sprintf("expected %s response, got %d instead",
strings.Join(codeStrs, "/"),
e.ActualResponse.StatusCode,
)
if len(e.ResponseBody) > 0 {
msg += ": " + string(e.ResponseBody)
}
return msg
}
//Is checks if the given error is an UnexpectedStatusCodeError for that status
//code. For example:
//
// info, err := container.Info()
// if schwift.Is(err, http.StatusNotFound) {
// // ... create container ...
// } else if err != nil {
// // ... report error ...
// } else {
// // ... use container info ...
// }
func Is(err error, code int) bool {
if e, ok := err.(UnexpectedStatusCodeError); ok {
return e.ActualResponse.StatusCode == code
}
return false
}
//MalformedHeaderError is generated when a response from Swift contains a
//malformed header.
type MalformedHeaderError struct {
Key string
ParseError error
}
//Error implements the builtin/error interface.
func (e MalformedHeaderError) Error() string {
return "Bad header " + e.Key + ": " + e.ParseError.Error()
}
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