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114 lines
3.5 KiB
114 lines
3.5 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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"leit.com/LAPP_CHEERSSON_BACKEND/global"
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"sync"
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)
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// 默认会话管理器
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// @Implement leit.com/LAPP_CHEERSSON_BACKEND/container/InformationManager
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type DefaultSessionManager struct {
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// 组件信息管理器
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informationManager InformationManager
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// 事务句柄工厂
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transactionHandlerFactory TransactionHandlerFactory
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// 同步锁
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locker sync.RWMutex
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// 用户会话映射: map[用户标识]会话
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user2SessionMapping map[string]*Session
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// 会话映射: map[会话标识]会话
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sessionMapping map[string]*Session
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}
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// 创建默认会话管理器
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// 参数:
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// 1.组件信息管理器
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// 2.事务句柄工厂
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// 返回值:
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// 1.默认会话管理器
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// 异常:
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// 1.组件信息管理器不能为空
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// 2.事务句柄工厂不能为空
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func NewDefaultSessionManager(informationManager InformationManager, transactionHandlerFactory TransactionHandlerFactory) *DefaultSessionManager {
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if informationManager == nil {
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panic(fmt.Sprintf("组件信息管理器不能为空!"))
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}
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if transactionHandlerFactory == nil {
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panic(fmt.Sprintf("事务句柄工厂不能为空!"))
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}
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return &DefaultSessionManager{informationManager, transactionHandlerFactory, sync.RWMutex{}, make(map[string]*Session, 100), make(map[string]*Session, 100)}
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}
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// @Reference leit.com/LAPP_CHEERSSON_BACKEND/container/SessionManager.ClearSession
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func (manager *DefaultSessionManager) ClearSession(sessionId string) {
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manager.locker.Lock()
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defer manager.locker.Unlock()
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session, ok := manager.sessionMapping[sessionId]
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if !ok {
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return
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}
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delete(manager.sessionMapping, sessionId)
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delete(manager.user2SessionMapping, session.user.UserId)
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}
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// @Reference leit.com/LAPP_CHEERSSON_BACKEND/container/SessionManager.GetSession
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func (manager *DefaultSessionManager) GetSession(sessionId string, user *global.User) (*Session, error) {
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if sessionId == "" {
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return nil, errors.New(fmt.Sprintf("会话标识不能为空!"))
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}
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if user == nil {
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return nil, errors.New(fmt.Sprintf("用户信息不能为空!"))
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}
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userId := user.UserId
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if userId == "" {
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return nil, errors.New(fmt.Sprintf("用户标识不能为空!"))
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}
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manager.locker.Lock()
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defer manager.locker.Unlock()
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session, ok := manager.sessionMapping[sessionId]
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if !ok {
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existingSession, ok := manager.user2SessionMapping[userId]
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if ok {
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delete(manager.user2SessionMapping, userId)
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delete(manager.sessionMapping, existingSession.SessionId())
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}
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sessionContext, err := NewSessionContext(user, manager.transactionHandlerFactory)
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if err != nil {
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return nil, err
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}
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handlerManager, err := manager.buildHandlerManager(sessionContext)
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if err != nil {
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return nil, err
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}
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session, err = NewSession(sessionContext, sessionId, handlerManager)
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if err != nil {
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return nil, err
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}
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manager.user2SessionMapping[userId] = session
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manager.sessionMapping[sessionId] = session
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}
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return session, nil
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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.会话上下文
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// 返回值:
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// 1.组件句柄管理器
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// 2.错误
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func (manager *DefaultSessionManager) buildHandlerManager(sessionContext *SessionContext) (*HandlerManager, error) {
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items := manager.informationManager.Items()
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handlerMapping := make(map[Interface]ComponentHandler, len(items))
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for _, component := range items {
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handler, err := component.BuildHandler(sessionContext)
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if err != nil {
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return nil, err
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}
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handlerMapping[component.Interface()] = handler
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}
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return NewHandlerManager(handlerMapping)
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}
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