Method processSubAppsRoutes

mount.go:170–229

processSubAppsRoutes adds routes of sub-apps recursively when the server is started

()

// processSubAppsRoutes adds routes of sub-apps recursively when the server is started
func (app *App) processSubAppsRoutes() {
	for prefix, subApp := range app.mountFields.appList {
		// skip real app
		if prefix == "" {
			continue
		}
		// process the inner routes
		if subApp.hasMountedApps() {
			subApp.mountFields.subAppsRoutesAdded.Do(func() {
				subApp.processSubAppsRoutes()
			})
		}
	}
	var handlersCount uint32
	// Iterate over the stack of the parent app
	for m := range app.stack {
		// Iterate over each route in the stack
		stackLen := len(app.stack[m])
		for i := 0; i < stackLen; i++ {
			route := app.stack[m][i]
			// Check if the route has a mounted app
			if !route.mount {
				if !route.use || (route.use && m == 0) {
					handlersCount += uint32(len(route.Handlers)) //nolint:gosec // G115 - handler count is always small
				}
				continue
			}

			// Create a slice to hold the sub-app's routes
			subRoutes := make([]*Route, len(route.group.app.stack[m]))

			// Iterate over the sub-app's routes
			for j, subAppRoute := range route.group.app.stack[m] {
				// Clone the sub-app's route
				subAppRouteClone := app.copyRoute(subAppRoute)

				// Add the parent route's path as a prefix to the sub-app's route
				app.addPrefixToRoute(route.path, subAppRouteClone, route.group.app.config.RegexHandler, route.group.app.customConstraints...)

				// Add the cloned sub-app's route to the slice of sub-app routes
				subRoutes[j] = subAppRouteClone
			}

			// Insert the sub-app's routes into the parent app's stack
			newStack := make([]*Route, len(app.stack[m])+len(subRoutes)-1)
			copy(newStack[:i], app.stack[m][:i])
			copy(newStack[i:i+len(subRoutes)], subRoutes)
			copy(newStack[i+len(subRoutes):], app.stack[m][i+1:])
			app.stack[m] = newStack

			i--

			// Mark the parent app's routes as refreshed
			app.hasRoutesRefreshed = true
			// update stackLen after appending subRoutes to app.stack[m]
			stackLen = len(app.stack[m])
		}
	}