minio/internal/http/request-recorder.go

73 lines
1.8 KiB
Go

// Copyright (c) 2015-2022 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package http
import (
"bytes"
"io"
)
// RequestRecorder - records the
// of a given io.Reader
type RequestRecorder struct {
// Data source to record
io.Reader
// Response body should be logged
LogBody bool
// internal recording buffer
buf bytes.Buffer
// total bytes read including header size
bytesRead int
}
// Close is a no operation closer
func (r *RequestRecorder) Close() error {
// no-op
return nil
}
// Read reads from the internal reader and counts/save the body in the memory
func (r *RequestRecorder) Read(p []byte) (n int, err error) {
n, err = r.Reader.Read(p)
r.bytesRead += n
if r.LogBody {
r.buf.Write(p[:n])
}
if err != nil {
return n, err
}
return n, err
}
// BodySize returns the body size if the currently read object
func (r *RequestRecorder) BodySize() int {
return r.bytesRead
}
// Data returns the bytes that were recorded.
func (r *RequestRecorder) Data() []byte {
// If body logging is enabled then we return the actual body
if r.LogBody {
return r.buf.Bytes()
}
// ... otherwise we return <BODY> placeholder
return BodyPlaceHolder
}