Test to get an interface using a "factory" name.

storebyname.go

package main

import (
	"fmt"
	"reflect"
)

// Store is our fake Store
type Store interface {
	FakeStoreInterfaceFunc()
}

// MyLittleStore is our store interface implementation
type MyLittleStore struct{}

// FakeStoreInterfaceFunc - placeholder
func (*MyLittleStore) FakeStoreInterfaceFunc() {
	fmt.Printf("Cool, it works.\n")
}

// ExtendedStore name is static to generate store
type ExtendedStore struct{}

// NewMyLittleStore returns a store
func (*ExtendedStore) NewMyLittleStore() Store {
	return &MyLittleStore{}
}

// CreateStoreByName creates a store by name
func CreateStoreByName() {
	// we need a struct to call by name
	extStore := ExtendedStore{}

	// look up the function
	createFunc := reflect.ValueOf(&extStore).MethodByName("NewMyLittleStore")

	// Call creation function
	values := createFunc.Call([]reflect.Value{})

	// get the store from the values
	var s Store
	s = values[0].Interface().(Store)

	// test the interface
	s.FakeStoreInterfaceFunc()
}

func main() {
	CreateStoreByName()
}