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https://github.com/hwholiday/learning_tools

Go 学习、Go 进阶、Go 实用工具类、Go DDD 项目落地、Go-kit 、Go-Micro 、Go 推送平台、微服务实践
https://github.com/hwholiday/learning_tools

aes auth2 ddd-example discovery gin go-kit golang jwt micro minio mongodb prometheus push redis rpc-grpc signal-protocol tcp-socket x3dh zap

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Go 学习、Go 进阶、Go 实用工具类、Go DDD 项目落地、Go-kit 、Go-Micro 、Go 推送平台、微服务实践

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# LEARNING_TOOLS
## 博客: [hwholiday](https://www.hwholiday.com/posts/)
- 🤪 golang 基础,微服务,架构,web,k8s,DDD 各种工具任君取用
- 📫 contact me: WECHAT HW_loner
- 📫 contact me: QQ 3355168235

# go-kit 微服务实践,从入门到精通

### [go-kit 系列文章归档地址](https://github.com/hwholiday/learning_tools/tree/master/go-kit) (详细介绍)

1: [v1 go-kit 微服务 基础使用 (HTTP)](https://www.hwholiday.com/2019/go_kit_v1/)
2: [v2 go-kit 微服务 添加日志(user/zap ,并为每个请求添加UUID)](https://www.hwholiday.com/2020/git_kit_v2/)
3: [v3 go-kit 微服务 身份认证 (JWT)](https://www.hwholiday.com/2020/go_kit_v3/)
4: [v4 go-kit 微服务 限流 (uber/ratelimit 和 golang/rate 实现)](https://www.hwholiday.com/2020/go_kit_v4/)
5: [v5 go-kit 微服务 使用GRPC(并为每个请求添加UUID)](https://www.hwholiday.com/2020/go_kit_v5/)
6: [v6 go-kit 微服务 服务注册与发现(etcd实现)](https://www.hwholiday.com/2020/go_kit_v6/)
7: [v7 go-kit 微服务 服务监控(prometheus 实现)](https://www.hwholiday.com/2020/go_kit_v7/)
8: [v8 go-kit 微服务 服务熔断(hystrix-go 实现)](https://www.hwholiday.com/2020/go_kit_v8/)
9: [v9 go-kit 微服务 服务链路追踪(jaeger 实现)(1)](https://www.hwholiday.com/2020/go_kit_v9/)
10: [v10 go-kit 微服务 服务链路追踪(jaeger 实现)(2)](https://www.hwholiday.com/2020/go_kit_v10/)
11: [v11 go-kit 微服务 日志分析管理 (ELK + Filebeat)](https://www.hwholiday.com/2020/go_kit_v12/)

# 用 go 实现的高性能长连接网络库

### [dove](https://github.com/hwholiday/ghost) 用 go 实现的高性能长连接网络库 https://github.com/hwholiday/ghost

# gRPC负载均衡(自定义负载均衡策略--etcd 实现)

### [hlb-grpc](https://github.com/hwholiday/learning_tools/tree/master/hlb-grpc) (gRPC负载均衡(自定义负载均衡策略--etcd 实现)

##### 实现基于版本(version)的grpc负载均衡器,了解过程后可自己实现更多的负载均衡功能

### [详细介绍](https://www.hwholiday.com/2021/etcd_grpc/)

+ 注册中心
- Etcd Lease 是一种检测客户端存活状况的机制。 群集授予具有生存时间的租约。 如果etcd 群集在给定的TTL 时间内未收到keepAlive,则租约到期。 为了将租约绑定到键值存储中,每个key 最多可以附加一个租约
+ 服务注册 (注册服务)
- 定时把本地服务(APP)地址,版本等信息注册到服务器
+ 服务发现 (客户端发起服务解析请求(APP))
- 查询注册中心(APP)下有那些服务
- 并向所有的服务建立HTTP2长链接
- 通过Etcd watch 监听服务(APP),通过变化更新链接
+ 负载均衡 (客户端发起请求(APP))
- 负载均衡选择合适的服务(APP HTTP2长链接)
- 发起调用

```
├── discovery
│   ├── customize_balancer.go
│   ├── discovery.go
│   └── options.go
├── example
│   ├── api
│   │   └── api.pb.go
│   ├── api.proto
│   ├── client_test.go
│   └── server.go
└── register
├── options.go
├── register.go
└── register_test.go

```

# 仿微信 auth2 授权登陆 DDD(领域设计驱动)+ 六边形架构
### [OAuth 2.0-授权码模式(authorization code)仿微信设计(战略篇)](https://www.hwholiday.com/2022/auth2_strategy/)
### [OAuth 2.0-授权码模式(authorization code)仿微信设计(战术篇)](https://www.hwholiday.com/2022/auth2_tactics/)

### [AUTH2 代码地址](https://github.com/hwholiday/learning_tools/tree/master/ddd-auth2-example)

# Golang DDD 的项目分层结构(六边形架构)

### [DDD](https://github.com/hwholiday/learning_tools/tree/master/ddd-project-example) (DDD 项目分层结构)

```base
├── cmd 存放 main.go 等
├── adapter
│   ├── grpc
│   └── http
│   └── facade 引用其他微服务(接口防腐层)
├── application
│   ├── assembler 负责将内部领域模型转化为可对外的DTO
│   └── cqe Command、Query和Event -- 入参
│   └── dto Application层的所有接口返回值为DTO -- 出参
│   └── service 负责业务流程的编排,但本身不负责任何业务逻辑
├── domain
│   ├── aggregate 聚合
│   ├── entity 实体
│   ├── event 事件
│   │   ├── publish
│   │   └── subsctibe
│   ├── repo 接口
│   │   └── specification 统一封装查询
│   ├── service 领域服务
│   └── vo 值对象
└── infrastructure
│   ├── config 配置文件
│   ├── pkg 常用工具类封装(DB,log,tool等)
│   └── repository
│   ├── converter domain内对象转化 do {互转}
│   └── do 数据库映射对象
└── types 封装自定义的参数类型,例如 phone 自校验参数
```

# 封装 zap 日志注入 trace 信息 Trace Id(内含 gin 例子)

### [hlog](https://github.com/hwholiday/learning_tools/tree/master/hlog) (源码地址)

- 实现自动切割文件 (基于 lumberjack 实现)
- 实现可传递 trace 信息 (基于 Context 实现)

```base
{"level":"info","ts":1639453661.4718382,"caller":"example/main.go:36","msg":"hconf example success"}
{"level":"info","ts":1639453664.7402327,"caller":"example/main.go:19","msg":"AddTraceId success","traceId":"68867b89-c949-45a4-b325-86866c9f869a"}
{"level":"info","ts":1639453664.7402515,"caller":"example/main.go:32","msg":"test","traceId":"68867b89-c949-45a4-b325-86866c9f869a"}
{"level":"debug","ts":1639453664.7402549,"caller":"example/main.go:33","msg":"test","traceId":"68867b89-c949-45a4-b325-86866c9f869a"}
```

### [hconfig 插拔式配置读取工具可动态加载](https://github.com/hwholiday/learning_tools/tree/master/hconfig)
- 支持 etcd
- 支持 kubernetes
- 支持 apollo
#### [使用文档](https://www.hwholiday.com/2022/hconfig/)
#### hconfig 配置不同的源

```base
//etcd
cli, err := clientv3.New(clientv3.Config{
Endpoints: []string{"127.0.0.1:2379"},})

c, err := etcd.NewEtcdConfig(cli,
etcd.WithRoot("/hconf"),
etcd.WithPaths("app", "mysql"))

//kubernetes
cli, err := kubernetes.NewK8sClientset(
kubernetes.KubeConfigPath("/home/app/conf/kube_config/local_kube.yaml"))

c, err := kubernetes.NewKubernetesConfig(cli,
kubernetes.WithNamespace("im"),
kubernetes.WithPaths("im-test-conf", "im-test-conf2"))

//apollo
c, err := apollo.NewApolloConfig(
apollo.WithAppid("test"),
apollo.WithNamespace("test.yaml"),
apollo.WithAddr("http://127.0.0.1:32001"),
apollo.WithCluster("dev"),
)
```

#### hconfig 使用

```base
conf, err := NewHConfig(
WithDataSource(c),//c 不同的源
)

// 加载配置
conf.Load()

//读取配置
val, err := conf.Get("test.yaml")
t.Logf("val %+v\n", val.String())

//监听配置变化
conf.Watch(func(path string, v HVal) {
t.Logf("path %s val %+v\n", path, v.String())
})
```

# go_push 一个实用的消息推送服务

### [go_push](https://github.com/hwholiday/learning_tools/tree/master/go_push) (推送服务)

```base
├── gateway // 长连接网关服务器
│   ├── push_job.go // 分发任务
│   ├── room.go // 房间,可作为某一类型的推送管理中心
│   ├── room_manage.go // 房间管理
│   ├── ws_conn.go // 简单封装的websocket方法
│   ├── ws_handle.go // 处理websocket协议方法
│   └── ws_server.go // websocket服务
├── logic //逻辑服务器
│   ├── http_handle.go // 推送,房间相关
│   └── http_server.go // http服务
└── main.go
```

### [HConf (基于etcd与viper的高可用配置中心)](https://github.com/hwholiday/learning_tools/tree/master/hconf)

- 可使用远程与本地模式
- 本地有的配置远程没有会自动把本地配置传到远程(基于key)
- 远程有的配置本地没有也会写一份到本地(退出程序会把远程配置写一份到本地)
- 远程模式配置可以动态加载
- 如远程连接不上会使用本地配置启动作为兜底

```base
var conf = Conf{}
r, err := NewHConf(
SetWatchRootName([]string{"/gs/conf"}),
)
if err != nil {
t.Error(err)
return
}
t.Log(r.ConfByKey("/gs/conf/net", &conf.Net))
t.Log(r.ConfByKey("/gs/conf/net2222", &conf.Net2))
t.Log(r.ConfByKey("/gs/conf/net3333", &conf.Net3))
if err := r.Run(); err != nil {
t.Error(err)
return
}
t.Log(conf)
t.Log(r.Close())
```

### [timezonefinder](https://github.com/hwholiday/learning_tools/tree/master/timezonefinder)
1: 通过时区获取当前国家码和大洲码
2: Country to Continent Mapping
3: Timezone to Country Mapping

### [HEvent (基于channel )](https://github.com/hwholiday/learning_tools/tree/master/hevent)
1: 基于channel的简单事件订阅发布

### [设计模式](https://github.com/hwholiday/learning_tools/tree/master/design-patterns)
1: 并发设计模式之Active Object
2: Go 实现的责任链模式

### [micro_agent](https://github.com/hwholiday/learning_tools/tree/master/micro_agent) (micro微服务)

1: base 基础方法
2: conf 配置文件
3:handler 对外处理方法
4:model 数据格式
5:proto protobuf 文件

### [all_packaged_library](https://github.com/hwholiday/learning_tools/tree/master/all_packaged_library) 里面封装了一些常用的库,有详细的介绍,持续更新

1: base 里面封装mysql,redis,mgo,minio文件储存库S3协议,雪花算法,退出程序方法,redis全局锁,日志库等(插件形式可单独引用)
2: logtool uber_zap日志库封装,可自动切分日志文件,压缩文件
3: perf ppoof小插件
4: push 集成苹果推送,google推送,华为推送
5: quit 优雅的退出程序
6: registrySelector 基于etcd实现的服务注册,发现,负载均衡

### [docker](https://github.com/hwholiday/learning_tools/tree/master/docker) (为你的服务插上docker_compose翅膀)

1: docker 为你的服务插上docker_compose翅膀

### [kafka](https://github.com/hwholiday/learning_tools/tree/master/kafka) (分布式消息发布订阅系统)

1: main 消息队列

### [NATS_streaming](https://github.com/hwholiday/learning_tools/tree/master/NATS_streaming) (分布式消息发布订阅系统--是由NATS驱动的数据流系统)

1: main 消息队列

### [nsq](https://github.com/hwholiday/learning_tools/tree/master/nsq) (分布式实时消息平台)

1: main 消息队列

### [grpc](https://github.com/hwholiday/learning_tools/tree/master/grpc) (grpc学习)

1: bidirectional_streaming_rpc 双向流grpc
2: server_side_streaming_rpc 服务端流grpc,也可以写成客户端流grpc
3: simple_rpc 简单grpc

### [rpc](https://github.com/hwholiday/learning_tools/tree/master/rpc) (rpc学习)

1: main rpc学习

### [prometheus](https://github.com/hwholiday/learning_tools/tree/master/prometheus) (监控报警系统)

1: server Prometheus监控报警系统

### [jaeger](https://github.com/hwholiday/learning_tools/tree/master/jaeger) (jaeger分布式链路追踪)

1: main jaeger分布式链路追踪

### [service_load_balancing](https://github.com/hwholiday/learning_tools/tree/master/service_load_balancing) (负载均衡)

1: fisher_yates_test 添加fisher-yates算法 负载均衡节点

### [hystrix](https://github.com/hwholiday/learning_tools/tree/master/hystrix) (熔断)

1: hystrix 学习并使用熔断(Hystrix)

### [req_limit](https://github.com/hwholiday/learning_tools/tree/master/req_limit) (限流)

1: main 使用带缓存的channel实现限流
2: uber_ratelimit 使用uber_ratelimit实现限流

### [ini](https://github.com/hwholiday/learning_tools/tree/master/ini) (配置文件库)

1: main 配置文件ini的读取,以及自动匹配到结构体里面

### [minio](https://github.com/hwholiday/learning_tools/tree/master/minio) (对象存储服务)

1: minio 对象存储服务使用

### [mysql](https://github.com/hwholiday/learning_tools/tree/master/mysql) (mysql服务器)

1: main 简单的mysql使用

### [redis](https://github.com/hwholiday/learning_tools/tree/master/redis) (redis相关)

1: bloom_filter redis 实现BloomFilter过滤器
2: lock redis实现全局锁
3: pipeline redis事务
4: subscription redis发布订阅

### [mongodb](https://github.com/hwholiday/learning_tools/tree/master/mongodb) (mongodb服务器)

1: mgo.v2 mgo.v2库的基础使用学习
2: mongo-go-driver 官方库的demo,以及事务提交(不能是单节点)

### [gin](https://github.com/hwholiday/learning_tools/tree/master/gin) (web框架gin学习)

1: mvc 模式,swagger文档 可作为基础学习gin

### [jwt](https://github.com/hwholiday/learning_tools/tree/master/jwt) (JSON WEB TOKEN)

1: jwt 学习使用

### [snow_flake](https://github.com/hwholiday/learning_tools/tree/master/snow_flake) (雪花算法)

1: main 雪花算法

### [encryption_algorithm](https://github.com/hwholiday/learning_tools/tree/master/encryption_algorithm) (双棘轮算法, KDF链,迪菲-赫尔曼棘轮,x3dh)

1: aes ase-(cfb,cbc,ecb)-(128,192,256)加解密方法
2: curve25519 椭圆曲线算法
3: 3curve25519 双棘轮算法,KDF链

### [LRU](https://github.com/hwholiday/learning_tools/tree/master/LRU) (缓存淘汰算法)

1: list lru 缓存淘汰算法

### [tcp](https://github.com/hwholiday/learning_tools/tree/master/tcp) (tcp协议实现)

1: 实现网络库,封包,解包 len+tag+data 模式

### [websocket](https://github.com/hwholiday/learning_tools/tree/master/websocket) (websocket协议实现)

1: 实现网络库

### [binary_conversion](https://github.com/hwholiday/learning_tools/tree/master/tool/binary_conversion) (进制转换)

1: 10to36 10进制转36进制
2: 10to62 10进制转62进制
3: 10to76 10进制转76进制
4: binary 用一个int64来描述开关(用户设置很多建议使用)

### [job_worker_mode](https://github.com/hwholiday/learning_tools/tree/master/job_worker_mode) (job_worker模式)

1: worker job_worker模式,可提高系统吞吐量

### [filewatch](https://github.com/hwholiday/learning_tools/tree/master/filewatch) (监控文件变化)

1: main 监控文件变化 可实现自动构建

### [prometheus](https://github.com/hwholiday/learning_tools/tree/master/prometheus) (普罗米修斯)

1: main 普罗米修斯

### [goquery](https://github.com/hwholiday/learning_tools/tree/master/goquery) (网页解析工具)

1: main 可以作为爬虫解析网页使用

### [active_object](https://github.com/hwholiday/learning_tools/tree/master/active_object) (并发设计模式)

1: active_object Go并发设计模式之Active Object

### [heap](https://github.com/hwholiday/learning_tools/tree/master/container/heap) (优先级队列)

1: heap 利用heap创建一个优先级队列

### [cli](https://github.com/hwholiday/learning_tools/tree/master/cli) (go命令行交互)

1: main go命令行交互

### [context](https://github.com/hwholiday/learning_tools/tree/master/context) (context包学习)

1: main context包学习

### [err](https://github.com/hwholiday/learning_tools/tree/master/err) (error 相关)

1: main golang 1.13 error 相关

### [interface](https://github.com/hwholiday/learning_tools/tree/master/interface) (interface包学习)

1: main interface包学习
2: middleware Golang 基于interface 实现中间件

### [syncPool](https://github.com/hwholiday/learning_tools/tree/master/syncPool) (syncPool包学习)

1: main syncPool包学习

### [reflect](https://github.com/hwholiday/learning_tools/tree/master/reflect) (reflect包学习)

1: main reflect包学习