mirror of
https://github.com/minio/minio.git
synced 2024-12-25 14:45:54 -05:00
191 lines
5.4 KiB
Go
191 lines
5.4 KiB
Go
/*
|
|
* MinIO Cloud Storage, (C) 2017 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 cmd
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"reflect"
|
|
"runtime"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
xnet "github.com/minio/minio/pkg/net"
|
|
trace "github.com/minio/minio/pkg/trace"
|
|
)
|
|
|
|
// recordRequest - records the first recLen bytes
|
|
// of a given io.Reader
|
|
type recordRequest struct {
|
|
// Data source to record
|
|
io.Reader
|
|
// Response body should be logged
|
|
logBody bool
|
|
// Internal recording buffer
|
|
buf bytes.Buffer
|
|
}
|
|
|
|
func (r *recordRequest) Read(p []byte) (n int, err error) {
|
|
n, err = r.Reader.Read(p)
|
|
if r.logBody {
|
|
r.buf.Write(p[:n])
|
|
}
|
|
if err != nil {
|
|
return n, err
|
|
}
|
|
return n, err
|
|
}
|
|
|
|
// Return the bytes that were recorded.
|
|
func (r *recordRequest) Data() []byte {
|
|
return r.buf.Bytes()
|
|
}
|
|
|
|
// recordResponseWriter - records the first recLen bytes
|
|
// of a given http.ResponseWriter
|
|
type recordResponseWriter struct {
|
|
// Data source to record
|
|
http.ResponseWriter
|
|
// Response body should be logged
|
|
logBody bool
|
|
// Internal recording buffer
|
|
headers bytes.Buffer
|
|
body bytes.Buffer
|
|
// The status code of the current HTTP request
|
|
statusCode int
|
|
// Indicate if headers are written in the log
|
|
headersLogged bool
|
|
}
|
|
|
|
// Write the headers into the given buffer
|
|
func writeHeaders(w io.Writer, statusCode int, headers http.Header) {
|
|
fmt.Fprintf(w, "%d %s\n", statusCode, http.StatusText(statusCode))
|
|
for k, v := range headers {
|
|
fmt.Fprintf(w, "%s: %s\n", k, v[0])
|
|
}
|
|
}
|
|
|
|
// Record the headers.
|
|
func (r *recordResponseWriter) WriteHeader(i int) {
|
|
r.statusCode = i
|
|
if !r.headersLogged {
|
|
writeHeaders(&r.headers, i, r.ResponseWriter.Header())
|
|
r.headersLogged = true
|
|
}
|
|
r.ResponseWriter.WriteHeader(i)
|
|
}
|
|
|
|
func (r *recordResponseWriter) Write(p []byte) (n int, err error) {
|
|
n, err = r.ResponseWriter.Write(p)
|
|
if !r.headersLogged {
|
|
// We assume the response code to be '200 OK' when WriteHeader() is not called,
|
|
// that way following Golang HTTP response behavior.
|
|
writeHeaders(&r.headers, http.StatusOK, r.ResponseWriter.Header())
|
|
r.headersLogged = true
|
|
}
|
|
if (r.statusCode != http.StatusOK && r.statusCode != http.StatusPartialContent && r.statusCode != 0) || r.logBody {
|
|
// Always logging error responses.
|
|
r.body.Write(p)
|
|
}
|
|
return n, err
|
|
}
|
|
|
|
// Calls the underlying Flush.
|
|
func (r *recordResponseWriter) Flush() {
|
|
r.ResponseWriter.(http.Flusher).Flush()
|
|
}
|
|
|
|
// Return response body.
|
|
func (r *recordResponseWriter) Body() []byte {
|
|
return r.body.Bytes()
|
|
}
|
|
|
|
// getOpName sanitizes the operation name for mc
|
|
func getOpName(name string) (op string) {
|
|
op = strings.TrimPrefix(name, "github.com/minio/minio/cmd.")
|
|
op = strings.TrimSuffix(op, "Handler-fm")
|
|
op = strings.Replace(op, "objectAPIHandlers", "s3", 1)
|
|
op = strings.Replace(op, "webAPIHandlers", "s3", 1)
|
|
op = strings.Replace(op, "adminAPIHandlers", "admin", 1)
|
|
op = strings.Replace(op, "(*storageRESTServer)", "internal", 1)
|
|
op = strings.Replace(op, "(*peerRESTServer)", "internal", 1)
|
|
op = strings.Replace(op, "(*lockRESTServer)", "internal", 1)
|
|
op = strings.Replace(op, "stsAPIHandlers", "sts", 1)
|
|
op = strings.Replace(op, "LivenessCheckHandler", "healthcheck", 1)
|
|
op = strings.Replace(op, "ReadinessCheckHandler", "healthcheck", 1)
|
|
return op
|
|
}
|
|
|
|
// Trace gets trace of http request
|
|
func Trace(f http.HandlerFunc, logBody bool, w http.ResponseWriter, r *http.Request) trace.Info {
|
|
|
|
name := getOpName(runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name())
|
|
|
|
bodyPlaceHolder := []byte("<BODY>")
|
|
var reqBodyRecorder *recordRequest
|
|
|
|
t := trace.Info{FuncName: name}
|
|
reqBodyRecorder = &recordRequest{Reader: r.Body, logBody: logBody}
|
|
r.Body = ioutil.NopCloser(reqBodyRecorder)
|
|
|
|
host, err := xnet.ParseHost(GetLocalPeer(globalEndpoints))
|
|
if err == nil {
|
|
t.NodeName = host.Name
|
|
}
|
|
rq := trace.RequestInfo{Time: time.Now().UTC(), Method: r.Method, Path: r.URL.Path, RawQuery: r.URL.RawQuery, Client: r.RemoteAddr}
|
|
rq.Headers = cloneHeader(r.Header)
|
|
rq.Headers.Set("Content-Length", strconv.Itoa(int(r.ContentLength)))
|
|
rq.Headers.Set("Host", r.Host)
|
|
for _, enc := range r.TransferEncoding {
|
|
rq.Headers.Add("Transfer-Encoding", enc)
|
|
}
|
|
if logBody {
|
|
// If body logging is disabled then we print <BODY> as a placeholder
|
|
// for the actual body.
|
|
rq.Body = reqBodyRecorder.Data()
|
|
|
|
} else {
|
|
rq.Body = bodyPlaceHolder
|
|
}
|
|
// Setup a http response body recorder
|
|
respBodyRecorder := &recordResponseWriter{ResponseWriter: w, logBody: logBody}
|
|
f(respBodyRecorder, r)
|
|
|
|
rs := trace.ResponseInfo{Time: time.Now().UTC()}
|
|
rs.Headers = cloneHeader(respBodyRecorder.Header())
|
|
rs.StatusCode = respBodyRecorder.statusCode
|
|
if rs.StatusCode == 0 {
|
|
rs.StatusCode = http.StatusOK
|
|
}
|
|
bodyContents := respBodyRecorder.Body()
|
|
if bodyContents != nil {
|
|
rs.Body = bodyContents
|
|
}
|
|
if !logBody {
|
|
// If there was no error response and body logging is disabled
|
|
// then we print <BODY> as a placeholder for the actual body.
|
|
rs.Body = bodyPlaceHolder
|
|
}
|
|
t.ReqInfo = rq
|
|
t.RespInfo = rs
|
|
return t
|
|
}
|