frostfs-s3-gw/cmd/http/stats/http-traffic-recorder.go

64 lines
1.8 KiB
Go

/*
* MinIO Cloud Storage, (C) 2019-2020 MinIO, Inc.
*
* 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 stats
import (
"io"
"net/http"
)
// IncomingTrafficMeter counts the incoming bytes from the underlying request.Body.
type IncomingTrafficMeter struct {
io.ReadCloser
countBytes int
}
// Read calls the underlying Read and counts the transferred bytes.
func (r *IncomingTrafficMeter) Read(p []byte) (n int, err error) {
n, err = r.ReadCloser.Read(p)
r.countBytes += n
return n, err
}
// BytesCount returns the number of transferred bytes
func (r IncomingTrafficMeter) BytesCount() int {
return r.countBytes
}
// OutgoingTrafficMeter counts the outgoing bytes through the responseWriter.
type OutgoingTrafficMeter struct {
// wrapper for underlying http.ResponseWriter.
http.ResponseWriter
countBytes int
}
// Write calls the underlying write and counts the output bytes
func (w *OutgoingTrafficMeter) Write(p []byte) (n int, err error) {
n, err = w.ResponseWriter.Write(p)
w.countBytes += n
return n, err
}
// Flush calls the underlying Flush.
func (w *OutgoingTrafficMeter) Flush() {
w.ResponseWriter.(http.Flusher).Flush()
}
// BytesCount returns the number of transferred bytes
func (w OutgoingTrafficMeter) BytesCount() int {
return w.countBytes
}