harbor/src/lib/response_recorder.go

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// Copyright Project Harbor 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 lib
import "net/http"
// NewResponseRecorder creates a response recorder
func NewResponseRecorder(w http.ResponseWriter) *ResponseRecorder {
recorder := &ResponseRecorder{}
recorder.ResponseWriter = w
return recorder
}
// ResponseRecorder is a wrapper for the http.ResponseWriter to record the response status code
type ResponseRecorder struct {
StatusCode int
wroteHeader bool
http.ResponseWriter
}
// Write records the status code before writing data to the underlying writer
func (r *ResponseRecorder) Write(data []byte) (int, error) {
if !r.wroteHeader {
r.WriteHeader(http.StatusOK)
}
return r.ResponseWriter.Write(data)
}
// WriteHeader records the status code before writing the code to the underlying writer
func (r *ResponseRecorder) WriteHeader(statusCode int) {
if !r.wroteHeader {
r.wroteHeader = true
r.StatusCode = statusCode
r.ResponseWriter.WriteHeader(statusCode)
}
}
// Success checks whether the status code is >= 200 & <= 399
func (r *ResponseRecorder) Success() bool {
statusCode := r.StatusCode
if statusCode == 0 {
// NOTE: r.code is zero means that `WriteHeader` not called by the http handler,
// so process it as http.StatusOK
statusCode = http.StatusOK
}
return statusCode >= http.StatusOK && statusCode < http.StatusBadRequest
}