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package middleware
import (
"bytes"
"fmt"
"log"
"net/http"
"time"
"github.com/dustin/go-humanize"
"github.com/go-chi/chi/middleware"
)
// Logger is a middleware that logs useful data about each HTTP request.
type Logger struct {
Logger middleware.LoggerInterface
}
// NewLogger creates a new RequestLogger Handler.
func NewLogger() func(next http.Handler) http.Handler {
return middleware.RequestLogger(&Logger{})
}
// NewLogEntry creates a new LogEntry for the request.
func (l *Logger) NewLogEntry(r *http.Request) middleware.LogEntry {
e := &LogEntry{
req: r,
buf: &bytes.Buffer{},
}
return e
}
// LogEntry represents an individual log entry.
type LogEntry struct {
*Logger
req *http.Request
buf *bytes.Buffer
}
// Write constructs and writes the final log entry.
func (l *LogEntry) Write(status, totalBytes int, elapsed time.Duration) {
rid := GetReqID(l.req.Context())
if rid != "" {
fmt.Fprintf(l.buf, "[%s] ", rid)
}
fmt.Fprintf(l.buf, "%03d | %s | %s | ", status, humanize.IBytes(uint64(totalBytes)), elapsed)
l.buf.WriteString(l.req.Host + " | " + l.req.Method + " " + l.req.RequestURI)
log.Print(l.buf.String())
}
// Panic prints the call stack for a panic.
func (l *LogEntry) Panic(v interface{}, stack []byte) {
e := l.NewLogEntry(l.req).(*LogEntry)
fmt.Fprintf(e.buf, "panic: %#v", v)
log.Print(e.buf.String())
log.Print(string(stack))
}
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