✨ Enhance logging configuration by introducing file output options and rotation settings in config.dev.toml. Update logger implementation to support multiple output streams, including file logging with rotation using lumberjack. Improve error handling and logging across various components, ensuring consistent logging practices. Update .gitignore to include log files and compressed logs. Add new Go module dependency for lumberjack.

internal/infra/nats/publisher.go

@@ -37,12 +37,17 @@ func ProvidePublisher(
 func (p *Publisher) Publish(message interface{}) error {
 	topic := p.cfg.Publisher.Topic
 	if topic == "" {
+		p.logger.Error("publisher topic is not configured")
 		return fmt.Errorf("publisher topic is not configured")
 	}
 
 	// Marshal message to JSON
 	messageBytes, err := json.Marshal(message)
 	if err != nil {
+		p.logger.Error("failed to marshal message",
+			zap.String("topic", topic),
+			zap.Error(err),
+		)
 		return fmt.Errorf("failed to marshal message: %w", err)
 	}
 
@@ -66,8 +71,18 @@ func (p *Publisher) Publish(message interface{}) error {
 	if err != nil {
 		// Distinguish temporary JetStream unavailability from permanent config errors.
 		if errors.Is(err, nats.ErrNoResponders) {
+			p.logger.Error("transient publish error (no responders)",
+				zap.String("topic", topic),
+				zap.Int("message_size", len(messageBytes)),
+				zap.Error(err),
+			)
 			return fmt.Errorf("transient publish error (no responders): %w", err)
 		}
+		p.logger.Error("failed to publish message",
+			zap.String("topic", topic),
+			zap.Int("message_size", len(messageBytes)),
+			zap.Error(err),
+		)
 		return fmt.Errorf("failed to publish message: %w", err)
 	}