/
logging.go
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/
logging.go
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// Copyright 2016 IBM Corporation
//
// 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 middleware
import (
"net/http"
"github.com/Sirupsen/logrus"
"github.com/amalgam8/amalgam8/controller/util"
"github.com/ant0ine/go-json-rest/rest"
)
// LoggingMiddleware logs information about the request
type LoggingMiddleware struct{}
// MiddlewareFunc logs information about the request after it completes
func (mw *LoggingMiddleware) MiddlewareFunc(h rest.HandlerFunc) rest.HandlerFunc {
return func(w rest.ResponseWriter, r *rest.Request) {
statusWriter := statusRW{-1, w}
h(&statusWriter, r)
// log the exiting request
logrus.WithFields(logrus.Fields{
"request_id": r.Header.Get(util.RequestIDHeader),
"method": r.Method,
"url": r.URL,
"status_code": statusWriter.status,
}).Info("Handled request")
}
}
// wrapper response writer so we can capture the status code
type statusRW struct {
status int
rest.ResponseWriter
}
func (w *statusRW) Header() http.Header {
return w.ResponseWriter.Header()
}
func (w *statusRW) Write(b []byte) (int, error) {
return w.ResponseWriter.(http.ResponseWriter).Write(b)
}
func (w *statusRW) WriteHeader(code int) {
w.status = code
w.ResponseWriter.WriteHeader(code)
}