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im's Introduction

简介

纯go实现的im即时通讯系统,各层可单独部署,之间通过rpc通讯,支持集群,学习于goim, 另使用于zookeeper,扩展性会大大增强, 总分三层

  1. comet(用户连接层),可以直接部署多个节点,每个节点保证serverId 唯一,在配置文件comet.toml
  2. logic(业务逻辑层),无状态,各层通过rpc通讯,容易扩展,支持http接口来接收消息
  3. job(任务推送层)通过redis 订阅发布功能进行推送到comet层。

架构图

image

时序图

以下Comet 层,Logic 层,Job层都可以灵活扩展机器 image

特性

  1. 分布式,可拓扑的架构
  2. 支持单个,房间推送
  3. 心跳支持(gorilla/websocket内置)
  4. 基于redis 做消息推送
  5. 轻量级
  6. 持续迭代...

部署

  1. 安装
go get -u github.com/Terry-Ye/im
mv $GOPATH/src/github.com/Terry-Ye/im $GOPATH/src/im
cd $GOPATH/src/im
go get ./...
# 需要使用zookeeper服务 文档最底有安装启动方法
go get -u -v -tags "zookeeper" github.com/smallnest/rpcx/...



golang.org 包拉不下来的情况,例

package golang.org/x/net/ipv4: unrecognized import path "golang.org/x/net/ipv4" (https fetch: Get https://golang.org/x/net/ipv4?go-get=1: dial tcp 216.239.37.1:443: i/o timeout)

从github 拉下来,再移动位置


git clone https://github.com/golang/net.git
mkdir -p golang.org/x/

mv net $GOPATH/src/golang.org/x/
  1. 部署im 安装comet、logic、job模块
# 注意:第一次需要先启动logic ,因为要注册 服务端的zookeeper, 不然先启动comet会报错,第二次则不需要
cd ../logic/
mv logic.toml.example logic.toml
go install -tags zookeeper   # 或 go run  -tags zookeeper *.go
$GOPATH/bin/logic d $GOPATH/src/im/logic/
# nohup $GOPATH/bin/logic d $GOPATH/src/im/logic/ 2>&1 > /data/log/im/logic.log &

cd $GOPATH/src/im/comet
mv comet.toml.example comet.toml
go install -tags zookeeper  # 或 go run  -tags zookeeper *.go
# 启动
$GOPATH/bin/comet d $GOPATH/src/im/comet/
# nohup $GOPATH/bin/comet d $GOPATH/src/im/comet/ 2>&1 > /data/log/im/comet.log &


cd ../job
mv job.toml.example job.toml
go install # 或 go run *.go
$GOPATH/bin/job d $GOPATH/src/im/job/
# nohup $GOPATH/bin/job d $GOPATH/src/im/job/ 2>&1 > /data/log/im/job.log &



// demo页面执行
cd $GOPATH/src/im/demo
go run main.go

  1. im_api 是im系统中使用的接口,需要像demo那样整体跑起来需要完整的部署

部署注意事项

  1. 部署服务器注意防火墙是否开放对应的端口(本地不需要,具体需要的端口在各层的配置文件)

demo

聊天室:https://www.texixi.com:1999/

使用的包

  • log: github.com/sirupsen/logrus
  • rpc: github.com/smallnest/rpcx
  • websocket: github.com/gorilla/websocket
  • 配置文件:github.com/spf13/viper

zookeeper 安装

    wget http://mirrors.hust.edu.cn/apache/zookeeper/stable/zookeeper-3.4.12.tar.gz
    tar -zxvf zookeeper-3.4.12.tar.gz
    cd zookeeper-3.4.12/conf/
    mv zoo_sample.cfg zoo.cfg //更改默认配置文件名称
    vi zoo.cfg //编辑配置文件,自定义dataDir
    cd ../bin
    ./zkServer.sh start //启动

后续计划

  1. 监控
  2. 聊天机器人

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