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52 lines
1.2 KiB
52 lines
1.2 KiB
// Copyright (c) Shenyang Leading Edge Intelligent Technology Co., Ltd. All rights reserved.
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package container
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import (
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"errors"
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"fmt"
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)
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// 组件句柄管理器
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type HandlerManager struct {
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// 组件句柄映射: map[接口类型]组件句柄
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handlerMapping map[Interface]ComponentHandler
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}
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// 创建组件句柄管理器
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// 参数
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// 1.会话标识
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// 2.用户信息
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// 3.服务映射: map[接口类型]组件句柄
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// 返回值:
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// 1.会话
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// 2.错误
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func NewHandlerManager(handlerMapping map[Interface]ComponentHandler) (*HandlerManager, error) {
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if len(handlerMapping) > 0 {
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for interfaceType, handler := range handlerMapping {
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if interfaceType == nil {
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return nil, errors.New(fmt.Sprintf("组件接口不能为空!"))
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}
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if handler == nil {
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return nil, errors.New(fmt.Sprintf("组件句柄不能为空!"))
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}
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}
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}
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return &HandlerManager{handlerMapping}, nil
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}
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// 获取指定接口的组件句柄
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// 参数
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// 1.服务接口类型
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// 返回值:
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// 1.组件句柄
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func (session *HandlerManager) Handler(interfaceType Interface) ComponentHandler {
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if interfaceType == nil {
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return nil
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}
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componentHandler, ok := session.handlerMapping[interfaceType]
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if !ok {
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return nil
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}
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return componentHandler
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}
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