initiall commit

apps/backend/internal/middleware/logger.go

@@ -0,0 +1,58 @@
+package middleware
+
+import (
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+// StructuredLogger returns a middleware that logs HTTP requests with structured logging
+func StructuredLogger() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		start := time.Now()
+
+		req := c.Request
+
+		// Create a logger with request context
+		logger := log.With().
+			Str("method", req.Method).
+			Str("uri", req.RequestURI).
+			Str("remote_ip", c.ClientIP()).
+			Str("user_agent", req.UserAgent()).
+			Str("request_id", req.Header.Get("X-Request-ID")).
+			Logger()
+
+		// Add logger to context
+		c.Set("logger", &logger)
+
+		// Process request
+		c.Next()
+
+		// Calculate latency
+		latency := time.Since(start)
+
+		// Log the request
+		logEvent := logger.Info()
+		if len(c.Errors) > 0 {
+			logEvent = logger.Error().Err(c.Errors.Last())
+		}
+
+		logEvent.
+			Int("status", c.Writer.Status()).
+			Int64("bytes_out", int64(c.Writer.Size())).
+			Dur("latency_ms", latency).
+			Msg("HTTP request")
+	}
+}
+
+// GetLogger retrieves the logger from the Gin context
+func GetLogger(c *gin.Context) *zerolog.Logger {
+	if logger, exists := c.Get("logger"); exists {
+		if l, ok := logger.(*zerolog.Logger); ok {
+			return l
+		}
+	}
+	return &log.Logger
+}