added updated code for core wiring

1. Removed tracing
2. Skipped Registration

core/module/module.go

@@ -0,0 +1,84 @@
+package module
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/beckn/beckn-onix/core/module/handler"
+	"github.com/beckn/beckn-onix/pkg/log"
+)
+
+// Config represents the configuration for a module.
+type Config struct {
+	Name    string `yaml:"name"`
+	Path    string `yaml:"path"`
+	Handler handler.Config
+}
+
+// handlerProviders maintains a mapping of handler types to their respective providers.
+var handlerProviders = map[handler.Type]handler.Provider{
+	handler.HandlerTypeStd: handler.NewStdHandler,
+}
+
+// GetDummyHandlerProviders returns a dummy handler provider mapping for testing purposes.
+func GetDummyHandlerProviders() map[handler.Type]handler.Provider {
+	return map[handler.Type]handler.Provider{
+		handler.HandlerTypeStd: handler.DummyHandler,
+	}
+}
+
+// getHandlerProviders is a function to retrieve handler providers, which can be overridden for testing.
+var getHandlerProviders = func() map[handler.Type]handler.Provider {
+	return handlerProviders
+}
+
+// Register initializes and registers handlers based on the provided configuration.
+// It iterates over the module configurations, retrieves appropriate handler providers,
+// and registers the handlers with the HTTP multiplexer.
+func Register(ctx context.Context, mCfgs []Config, mux *http.ServeMux, mgr handler.PluginManager) error {
+	log.Debugf(ctx, "Registering modules with config: %#v", mCfgs)
+
+	providers := getHandlerProviders()
+	// Iterate over the handlers in the configuration.
+	for _, c := range mCfgs {
+		rmp, ok := providers[c.Handler.Type]
+		if !ok {
+			return fmt.Errorf("invalid module : %s", c.Name)
+		}
+		h, err := rmp(ctx, mgr, &c.Handler)
+		if err != nil {
+			return fmt.Errorf("%s : %w", c.Name, err)
+		}
+		h, err = addMiddleware(ctx, mgr, h, &c.Handler)
+		if err != nil {
+			return fmt.Errorf("failed to add middleware: %w", err)
+
+		}
+		log.Debugf(ctx, "Registering handler %s, of type %s @ %s", c.Name, c.Handler.Type, c.Path)
+		mux.Handle(c.Path, h)
+	}
+	return nil
+}
+
+// addMiddleware applies middleware plugins to the provided handler in reverse order.
+// It retrieves middleware instances from the plugin manager and chains them to the handler.
+func addMiddleware(ctx context.Context, mgr handler.PluginManager, handler http.Handler, hCfg *handler.Config) (http.Handler, error) {
+	mws := hCfg.Plugins.Middleware
+	log.Debugf(ctx, "Applying %d middleware(s) to the handler", len(mws))
+	// Apply the middleware in reverse order.
+	for i := len(mws) - 1; i >= 0; i-- {
+		log.Debugf(ctx, "Loading middleware: %s", mws[i].ID)
+		mw, err := mgr.Middleware(ctx, &mws[i])
+		if err != nil {
+			log.Errorf(ctx, err, "Failed to load middleware %s: %v", mws[i].ID, err)
+			return nil, fmt.Errorf("failed to load middleware %s: %w", mws[i].ID, err)
+		}
+		// Apply the middleware to the handler.
+		handler = mw(handler)
+		log.Debugf(ctx, "Applied middleware: %s", mws[i].ID)
+	}
+
+	log.Debugf(ctx, "Middleware chain setup completed")
+	return handler, nil
+}