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lal/app/demo/dispatch/datamanager/data_interface.go

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// Copyright 2020, Chef. All rights reserved.
// https://github.com/q191201771/lal
//
// Use of this source code is governed by a MIT-style license
// that can be found in the License file.
//
// Author: Chef (191201771@qq.com)
package datamanager
// 本demo的数据存储在内存中只实现了DataManagerMemory所以存在单点风险指的是dispatch永久性发生故障短暂故障或重启是ok的
// 生产环境可以把数据存储在redis、mysql等数据库中实现DataManager interface即可
type DataManger interface {
AddPub(streamName, serverID string)
DelPub(streamName, serverID string)
QueryPub(streamName string) (serverID string, exist bool)
// 1. 全量校正。比如自身服务重启了lal节点重启了或其他原因Add、Del消息丢失了
// 2. 心跳保活
UpdatePub(serverID string, streamNameList []string)
}
type DataManagerType int
const (
DMTMemory DataManagerType = iota
)
// @param serverTimeoutSec 超过该时间间隔没有Update则清空对应节点的所有信息
func NewDataManager(t DataManagerType, serverTimeoutSec int) DataManger {
switch t {
case DMTMemory:
return NewDataManagerMemory(serverTimeoutSec)
default:
panic("invalid data manager type")
}
}