9472299308
This patch brings in the removal of debug logging altogether, instead we bring in the functionality of being able to trace the errors properly pointing back to the origination of the problem. To enable tracing you need to enable "MINIO_TRACE" set to "1" or "true" environment variable which would print back traces whenever there is an error which is unhandled or at the handler layer. By default this tracing is turned off and only user level logging is provided.
119 lines
3 KiB
Go
119 lines
3 KiB
Go
/*
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* Minimalist Object Storage, (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"encoding/json"
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"net/http"
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"net/url"
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"os"
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"time"
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)
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type accessLogHandler struct {
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http.Handler
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accessLogFile *os.File
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}
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// LogMessage is a serializable json log message
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type LogMessage struct {
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StartTime time.Time
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Duration time.Duration
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StatusMessage string // human readable http status message
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ContentLength string // human readable content length
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// HTTP detailed message
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HTTP struct {
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ResponseHeaders http.Header
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Request struct {
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Method string
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URL *url.URL
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Proto string // "HTTP/1.0"
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ProtoMajor int // 1
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ProtoMinor int // 0
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Header http.Header
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Host string
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Form url.Values
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PostForm url.Values
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Trailer http.Header
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RemoteAddr string
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RequestURI string
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}
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}
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}
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func (h *accessLogHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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message, err := getLogMessage(w, req)
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fatalIf(err, "Unable to parse HTTP request and response fields.")
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_, err = h.accessLogFile.Write(message)
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fatalIf(err, "Unable to log HTTP access.")
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h.Handler.ServeHTTP(w, req)
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}
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func getLogMessage(w http.ResponseWriter, req *http.Request) ([]byte, error) {
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logMessage := &LogMessage{
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StartTime: time.Now().UTC(),
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}
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// store lower level details
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logMessage.HTTP.ResponseHeaders = w.Header()
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logMessage.HTTP.Request = struct {
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Method string
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URL *url.URL
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Proto string // "HTTP/1.0"
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ProtoMajor int // 1
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ProtoMinor int // 0
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Header http.Header
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Host string
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Form url.Values
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PostForm url.Values
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Trailer http.Header
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RemoteAddr string
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RequestURI string
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}{
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Method: req.Method,
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URL: req.URL,
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Proto: req.Proto,
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ProtoMajor: req.ProtoMajor,
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ProtoMinor: req.ProtoMinor,
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Header: req.Header,
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Host: req.Host,
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Form: req.Form,
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PostForm: req.PostForm,
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Trailer: req.Header,
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RemoteAddr: req.RemoteAddr,
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RequestURI: req.RequestURI,
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}
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// logMessage.HTTP.Request = req
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logMessage.Duration = time.Now().UTC().Sub(logMessage.StartTime)
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js, err := json.Marshal(logMessage)
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if err != nil {
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return nil, err
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}
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js = append(js, byte('\n')) // append a new line
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return js, nil
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}
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// setAccessLogHandler logs requests
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func setAccessLogHandler(h http.Handler) http.Handler {
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file, err := os.OpenFile("access.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
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fatalIf(err, "Failed top open access log.")
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return &accessLogHandler{Handler: h, accessLogFile: file}
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}
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