func int(name string, def int64, private bool) int64 {
strVal := os.Getenv(name)
l := log.WithField("name", name)
// No value? Use the default value provided.
if strVal == "" {
if !private {
l = l.WithField("default", def)
}
l.Info("No ENV value, using default")
return def
}
// Attempt conversion from string to an int.
intVal, err := strconv.Atoi(strVal)
if err != nil {
if !private {
l = log.WithFields(logrus.Fields{
"value": strVal,
"default": def,
})
}
l.Error("Invalid value, using default")
return def
}
// If we're here, it's all good. Use the new value.
if !private {
l = log.WithFields(logrus.Fields{
"default": def,
"value": intVal,
})
}
l.Info("Using ENV value")
return int64(intVal)
}
// ServeHTTP implements the http.Handler interface and will record information
// about a request, and log it after the request runs.
func (logger Logger) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// Retrieve the last client ip from the RemoteAddr header field.
clientIP := r.RemoteAddr
if colon := strings.LastIndex(clientIP, ":"); colon != -1 {
clientIP = clientIP[:colon]
}
// Create an access log record.
record := &LogRecord{
ResponseWriter: w,
ip: clientIP,
time: time.Now(),
method: r.Method,
uri: r.RequestURI,
protocol: r.Proto,
}
// Set up a function to run once the request has been served.
defer func(record *LogRecord, startTime time.Time) {
// Recover from a panic if possible.
if recovered := recover(); recovered != nil {
var err error
// Ensure we have an error interface.
if thisErr, ok := recovered.(error); ok {
err = thisErr
} else {
err = fmt.Errorf("%s", recovered)
}
if err != nil {
log.WithError(err).Error("Recovered from panic")
vc.RespondWithError(w, r, err)
}
}
// Log the response info.
finishTime := time.Now()
record.time = finishTime.UTC()
record.duration = finishTime.Sub(startTime)
log.WithFields(record.Data()).Infof("")
}(record, time.Now())
// Serve the request.
logger.Handler.ServeHTTP(record, r)
}