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logger.go
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logger.go
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// WUTONG, Application Management Platform
// Copyright (C) 2014-2017 Wutong Co., Ltd.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Wutong,
// one or multiple Commercial Licenses authorized by Wutong Co., Ltd.
// must be obtained first.
// 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package log
import (
"fmt"
"net/http"
"time"
"github.com/go-chi/chi/middleware"
"github.com/sirupsen/logrus"
)
//NewStructuredLogger new struct
func NewStructuredLogger(logger *logrus.Logger) func(next http.Handler) http.Handler {
return middleware.RequestLogger(&StructuredLogger{logger})
}
//StructuredLogger StructuredLogger
type StructuredLogger struct {
Logger *logrus.Logger
}
//NewLogEntry NewLogEntry
func (l *StructuredLogger) NewLogEntry(r *http.Request) middleware.LogEntry {
entry := &StructuredLoggerEntry{Logger: logrus.NewEntry(l.Logger)}
logFields := logrus.Fields{}
logFields["ts"] = time.Now().UTC().Format(time.RFC1123)
if reqID := middleware.GetReqID(r.Context()); reqID != "" {
logFields["req_id"] = reqID
}
scheme := "http"
if r.TLS != nil {
scheme = "https"
}
logFields["http_scheme"] = scheme
logFields["http_proto"] = r.Proto
logFields["http_method"] = r.Method
logFields["remote_addr"] = r.RemoteAddr
logFields["user_agent"] = r.UserAgent()
logFields["uri"] = fmt.Sprintf("%s://%s%s", scheme, r.Host, r.RequestURI)
entry.Logger = entry.Logger.WithFields(logFields)
entry.Logger.Debugln("request started")
return entry
}
//StructuredLoggerEntry StructuredLoggerEntry
type StructuredLoggerEntry struct {
Logger logrus.FieldLogger
}
//Write Write
func (l *StructuredLoggerEntry) Write(status, bytes int, header http.Header, elapsed time.Duration, data interface{}) {
l.Logger = l.Logger.WithFields(logrus.Fields{
"resp_status": status, "resp_bytes_length": bytes,
"resp_elapsed_ms": float64(elapsed.Nanoseconds()) / 1000000.0,
})
l.Logger.Debugln("request complete")
}
//Panic Panic
func (l *StructuredLoggerEntry) Panic(v interface{}, stack []byte) {
l.Logger = l.Logger.WithFields(logrus.Fields{
"stack": string(stack),
"panic": fmt.Sprintf("%+v", v),
})
}