LAPP_LF_MOM_BACKEND/container/ServiceHandler.go

// Copyright (c) Shenyang Leading Edge Intelligent Technology Co., Ltd. All rights reserved.

package container

import (
	"errors"
	"fmt"
)

// 服务组件句柄
// @Implement LAPP_LF_MOM_BACKEND/container/ComponentHandler
type ServiceHandler struct {
	// @Inherit LAPP_LF_MOM_BACKEND/container/ElementHandler
	ElementHandler
	// 方法句柄映射: map[方法名]方法句柄
	methodMapping map[string]*ServiceMethodHandler
}

// 创建服务组件句柄
// 参数
// 1.服务组件实例
// 2.方法句柄映射: map[方法名]方法句柄
// 返回值:
// 1.服务组件句柄
// 2.错误
func NewServiceHandler(instance Instance, methodMapping map[string]*ServiceMethodHandler) (*ServiceHandler, error) {
	if methodMapping == nil {
		return nil, errors.New(fmt.Sprintf("方法句柄映射不能为空!"))
	}
	if len(methodMapping) > 0 {
		for methodName, methodHandler := range methodMapping {
			if methodName == "" {
				return nil, errors.New(fmt.Sprintf("方法名不能为空!"))
			}
			if methodHandler == nil {
				return nil, errors.New(fmt.Sprintf("方法句柄不能为空!"))
			}
		}
	}
	return &ServiceHandler{ElementHandler{instance}, methodMapping}, nil
}

// 创建获取方法句柄
// 参数
// 1.方法名
// 返回值:
// 1.方法句柄
func (handler *ServiceHandler) Method(methodName string) *ServiceMethodHandler {
	if methodName == "" {
		return nil
	}
	serviceMethodHandler, ok := handler.methodMapping[methodName]
	if !ok {
		return nil
	}
	return serviceMethodHandler
}