Provider

Provider is a instance have declare in module. Two method to define a provider:

• Define with value

• Define with function

// Define with value
package user

import "github.com/tinh-tinh/tinhtinh/core"

const USER_SERVICE core.Provide = "user_service"

type UserService struct {
    Name string
}

func Service(module *core.DynamicModule) *core.DynamicProvider {
    provider := module.NewProvider(core.ProviderOptions{
        Name: USER_SERVICE,
        Value: &UserService{Name: "haha"},
    })
    
    return provider
}

Define provider in the module:

package user

import "github.com/tinh-tinh/tinhtinh/core"

func Module(module *core.DynamicModule) *core.DynamicModule {
    userModule := module.New(core.NewModuleOptions{
        Providers: []core.Provider{Service},
    })
    
    return userModule
}

If you need create provider base on the other provider, you can create provider with a factory.

// Define with functions
package user

import "github.com/tinh-tinh/tinhtinh/core"

const AUTH_SERVICE core.Provide = "auth_service"

type AuthService struct {
    Name string
}
func AuthService(module *core.DynamicModule) *core.DynamicProvider {
    provider := module.NewProvider(core.ProviderOptions{
        Name: USER_SERVICE,
        Factory: func(param ...interface{}) interface{} {
	    userService := param[0].(*UserService)
	    return &AuthService{
	        Name: userService.Name,
	    }
	},
	Inject: []core.Provide{USER_SERVICE},
    })
    
    return provider
}