accesslog.go
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// Copyright 2014 beego Author. All Rights Reserved.
//
// 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 logs
import (
"bytes"
"strings"
"encoding/json"
"fmt"
"time"
)
const (
apacheFormatPattern = "%s - - [%s] \"%s %d %d\" %f %s %s"
apacheFormat = "APACHE_FORMAT"
jsonFormat = "JSON_FORMAT"
)
// AccessLogRecord struct for holding access log data.
type AccessLogRecord struct {
RemoteAddr string `json:"remote_addr"`
RequestTime time.Time `json:"request_time"`
RequestMethod string `json:"request_method"`
Request string `json:"request"`
ServerProtocol string `json:"server_protocol"`
Host string `json:"host"`
Status int `json:"status"`
BodyBytesSent int64 `json:"body_bytes_sent"`
ElapsedTime time.Duration `json:"elapsed_time"`
HTTPReferrer string `json:"http_referrer"`
HTTPUserAgent string `json:"http_user_agent"`
RemoteUser string `json:"remote_user"`
}
func (r *AccessLogRecord) json() ([]byte, error) {
buffer := &bytes.Buffer{}
encoder := json.NewEncoder(buffer)
disableEscapeHTML(encoder)
err := encoder.Encode(r)
return buffer.Bytes(), err
}
func disableEscapeHTML(i interface{}) {
if e, ok := i.(interface {
SetEscapeHTML(bool)
}); ok {
e.SetEscapeHTML(false)
}
}
// AccessLog - Format and print access log.
func AccessLog(r *AccessLogRecord, format string) {
var msg string
switch format {
case apacheFormat:
timeFormatted := r.RequestTime.Format("02/Jan/2006 03:04:05")
msg = fmt.Sprintf(apacheFormatPattern, r.RemoteAddr, timeFormatted, r.Request, r.Status, r.BodyBytesSent,
r.ElapsedTime.Seconds(), r.HTTPReferrer, r.HTTPUserAgent)
case jsonFormat:
fallthrough
default:
jsonData, err := r.json()
if err != nil {
msg = fmt.Sprintf(`{"Error": "%s"}`, err)
} else {
msg = string(jsonData)
}
}
beeLogger.writeMsg(levelLoggerImpl, strings.TrimSpace(msg))
}