Merge branch 'main' of git.mstar.dev:mstar/goutils

http/zerolog.go

@@ -5,19 +5,36 @@ import (
 	"strings"
 	"time"
 
+	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/hlog"
 	"github.com/rs/zerolog/log"
 )
 
-func BuildLoggingMiddleware(extras map[string]string) HandlerBuilder {
+func BuildLoggingMiddleware(
+	status500IsError bool,
+	ignorePaths []string,
+	extras map[string]string,
+) HandlerBuilder {
 	return func(h http.Handler) http.Handler {
 		return ChainMiddlewares(h,
 			hlog.NewHandler(log.Logger),
 			hlog.AccessHandler(func(r *http.Request, status, size int, duration time.Duration) {
-				if strings.HasPrefix(r.URL.Path, "/assets") {
+				for _, p := range ignorePaths {
+					if strings.HasPrefix(r.URL.Path, p) {
 						return
 					}
-				logger := hlog.FromRequest(r).Info().
+				}
+				var logger *zerolog.Event
+				if status >= 500 {
+					if status500IsError {
+						logger = hlog.FromRequest(r).Error()
+					} else {
+						logger = hlog.FromRequest(r).Warn()
+					}
+				} else {
+					logger = hlog.FromRequest(r).Info()
+				}
+				logger = logger.
 					Str("method", r.Method).
 					Stringer("url", r.URL).
 					Int("status", status).
@@ -28,7 +45,7 @@ func BuildLoggingMiddleware(extras map[string]string) HandlerBuilder {
 				}
 				logger.Send()
 			}),
-			hlog.RemoteAddrHandler("ip"),
+			RealIpAppenderMiddleware("ip"),
 			hlog.UserAgentHandler("user_agent"),
 			hlog.RefererHandler("referer"),
 			hlog.RequestIDHandler("req_id", "Request-Id"),
@@ -51,9 +68,33 @@ func LoggingMiddleware(handler http.Handler) http.Handler {
 				Dur("duration", duration).
 				Send()
 		}),
-		hlog.RemoteAddrHandler("ip"),
+		RealIpAppenderMiddleware("ip"),
 		hlog.UserAgentHandler("user_agent"),
 		hlog.RefererHandler("referer"),
 		hlog.RequestIDHandler("req_id", "Request-Id"),
 	)
 }
+
+// hlog.RemoteAddrHandler except fixed to check the X-Real-Ip and X-Forwarded-For
+// headers first for the IP instead of relying on RemoteAddr
+// (which would only return the last proxy's address instead of the caller's)
+func RealIpAppenderMiddleware(fieldKey string) func(handler http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			IPAddress := r.Header.Get("X-Real-Ip")
+			if IPAddress == "" {
+				IPAddress = r.Header.Get("X-Forwarded-For")
+			}
+			if IPAddress == "" {
+				IPAddress = r.RemoteAddr
+			}
+			if IPAddress != "" {
+				log := zerolog.Ctx(r.Context())
+				log.UpdateContext(func(c zerolog.Context) zerolog.Context {
+					return c.Str(fieldKey, IPAddress)
+				})
+			}
+			next.ServeHTTP(w, r)
+		})
+	}
+}