├── .gitattributes ├── .gitignore ├── README.md ├── dynamic-sharding.yml ├── go.mod ├── go.sum ├── images ├── dynamic-sharding架构图.jpg ├── log.jpg ├── pgw_miss.png └── pgw_miss2.png ├── makefile └── pkg ├── config └── config.go ├── consistent └── consistent.go ├── main.go ├── sd ├── rings.go └── sd.go └── web ├── controller └── pushgateway │ ├── pgw_controller.go │ └── pgw_route.go └── gin.go /.gitattributes: -------------------------------------------------------------------------------- 1 | *.html linguist-language=golang -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | bin/ 2 | bin/* 3 | out/ 4 | *.swp 5 | *.swo 6 | *.tar.gz 7 | docs/_site 8 | .idea/ 9 | package_cache_tmp/ 10 | /.idea 11 | *DS_Store -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # k8s零基础入门运维课程 2 | - [k8s零基础入门运维课程，计算存储网络和常见的集群相关操作](https://ke.qq.com/course/5829699) 3 | 4 | # k8s纯源码解读教程(3个课程内容合成一个大课程) 5 | - [k8s底层原理和源码讲解之精华篇](https://ke.qq.com/course/4093533) 6 | - [k8s底层原理和源码讲解之进阶篇](https://ke.qq.com/course/4236389) 7 | - [k8s纯源码解读课程，助力你变成k8s专家](https://ke.qq.com/course/4697341) 8 | 9 | 10 | # k8s运维进阶调优课程 11 | - [k8s运维大师课程](https://ke.qq.com/course/5586848) 12 | 13 | # k8s管理运维平台实战 14 | - [k8s管理运维平台实战前端vue后端golang](https://ke.qq.com/course/5856444) 15 | 16 | 17 | # k8s二次开发课程 18 | - [k8s二次开发之基于真实负载的调度器](https://ke.qq.com/course/5814034) 19 | - [k8s-operator和crd实战开发 助你成为k8s专家](https://ke.qq.com/course/5458555) 20 | 21 | # cicd 课程 22 | - [tekton全流水线实战和pipeline运行原理源码解读](https://ke.qq.com/course/5467720) 23 | 24 | 25 | # prometheus全组件的教程 26 | - [01_prometheus零基础入门，grafana基础操作，主流exporter采集配置](https://ke.qq.com/course/5826832) 27 | - [02_prometheus全组件配置使用、底层原理解析、高可用实战](https://ke.qq.com/course/3549215) 28 | - [03_prometheus-thanos使用和源码解读](https://ke.qq.com/course/3883439) 29 | - [04_kube-prometheus和prometheus-operator实战和原理介绍](https://ke.qq.com/course/3912017) 30 | - [05_prometheus源码讲解和二次开发](https://ke.qq.com/course/4236995) 31 | - [06_prometheus监控k8s的实战配置和原理讲解，写go项目暴露业务指标](https://ke.qq.com/course/5837369) 32 | 33 | # go语言课程 34 | - [golang基础课程](https://ke.qq.com/course/4334898) 35 | - [golang实战课，一天编写一个任务执行系统，客户端和服务端架构](https://ke.qq.com/course/3550865) 36 | - [golang运维开发项目之k8s网络探测实战](https://ke.qq.com/course/5860635) 37 | - [golang运维平台实战，服务树,日志监控，任务执行，分布式探测](https://ke.qq.com/course/4334675) 38 | - [golang运维开发实战课程之k8s巡检平台](https://ke.qq.com/course/5818923) 39 | 40 | # 直播答疑sre职业发展规划 41 | - [k8s-prometheus课程答疑和运维开发职业发展规划](https://ke.qq.com/course/5506477) 42 | 43 | 44 | # k8s从零基础入门到专家到运维大师 45 | 46 | | 学习方向 | 分析进阶视频 | 教程地址 | 备注 | 47 | |--------------------------|---------|------------|-----| 48 | | 01_k8s零基础入门实战 | [地址](https://www.bilibili.com/video/BV1Mt4y1P7bL/) | [地址](https://ke.qq.com/course/5829699) | | 49 | | 02_k8s纯源码解读课程，助力你变成k8s专家 | [地址](https://www.bilibili.com/video/BV1or4y1877p/) | [地址](https://ke.qq.com/course/4697341) | | 50 | | 03_k8s底层原理和源码讲解之精华篇 | [地址](https://www.bilibili.com/video/BV1T34y127gU/) | [地址](https://ke.qq.com/course/4093533) | | 51 | | 04_k8s底层原理和源码讲解之进阶篇 | [地址](https://www.bilibili.com/video/BV1si4y1f7Xo/) | [地址](https://ke.qq.com/course/4236389) | | 52 | 53 | 54 | # 01 新手课程 55 | - k8s零基础买这个课，只需有linux基础就能学。玩转k8s集群常用的监控/日志/控制台等组件 https://ke.qq.com/course/5829699 56 | - k8s中的prometheus监控实战和底层原理讲解 https://ke.qq.com/course/5837369 57 | # 02 源码解读课程 58 | - k8s源码解读看这3个课，合在一起是个大课，没有顺序 59 | - https://ke.qq.com/course/4697341 60 | - https://ke.qq.com/course/4093533 61 | - https://ke.qq.com/course/4236389 62 | # 03 进阶二开课程 63 | - 偏k8s二次开发 k8s-operator和crd实战开发 https://ke.qq.com/course/5458555 64 | - k8s运维大师课程是 真实高并发k8s集群调优，疑难杂症解决和一些工具的开发 https://ke.qq.com/course/5586848 65 | - k8s二次开发之基于真实负载的调度器 https://ke.qq.com/course/5814034 66 | 67 | # k8s 开发篇 68 | 69 | 70 | | 学习方向 | 分析进阶视频 | 教程地址 | 备注 | 71 | |-----------------------------------|---------|------------|-----| 72 | | 01_k8s运维大师课程 | [地址](https://www.bilibili.com/video/BV11B4y1k7LB/) | [地址](https://ke.qq.com/course/5586848) | | 73 | | 02_k8s-operator和crd实战开发 助你成为k8s专家 | [地址](https://www.bilibili.com/video/BV1cv4y1371X/) | [地址](https://ke.qq.com/course/5458555) | | 74 | | 02_k8s二次开发之基于真实负载的调度器 | [地址](https://www.bilibili.com/video/BV1qB4y1G7Kf/) | [地址](https://ke.qq.com/course/5814034) | | 75 | 76 | 77 | 78 | # prometheus监控从入门到专家之路 79 | 80 | | 学习方向 | 分析进阶视频 | 教程地址 | 备注 | 81 | |------------------------------------------------|---------|------------|-----| 82 | | 01_prometheus零基础入门，grafana基础操作，主流exporter采集配置 | [地址](https://www.bilibili.com/video/BV1814y1e73y/) | [地址](https://ke.qq.com/course/5826832) | | 83 | | 02_prometheus全组件配置使用、底层原理解析、高可用实战 | [地址](https://www.bilibili.com/video/BV1oZ4y1f7au/) | [地址](https://ke.qq.com/course/3549215) | | 84 | | 03_kube-prometheus和prometheus-operator实战和原理介绍 | [地址](https://www.bilibili.com/video/BV1LR4y1L7jV/) | [地址](https://ke.qq.com/course/3912017) | | 85 | | 04_prometheus-thanos使用和源码解读 | [地址](https://www.bilibili.com/video/BV1814y1e73y/) | [地址](https://ke.qq.com/course/3883439) | | 86 | | 05_prometheus源码讲解和二次开发 | [地址](https://www.bilibili.com/video/BV1hS4y1m73Q/) | [地址](https://ke.qq.com/course/4236995) | | 87 | 88 | 89 | # golang运维开发之从0基础到运维平台 90 | 91 | | 学习方向 | 分析进阶视频 | 教程地址 | 备注 | 92 | |------------------------------------------------|---------|------------|-----| 93 | | 01_golang基础课程 | [地址](https://www.bilibili.com/video/BV1WT411M7Gh/) | [地址](https://ke.qq.com/course/4334898) | | 94 | | 02_golang运维平台实战，服务树,日志监控，任务执行，分布式探测 | [地址](https://www.bilibili.com/video/BV14T4y1k7oo) | [地址](https://ke.qq.com/course/4334675) | | 95 | | 03_golang运维开发实战课程之k8s巡检平台] | [地址](https://www.bilibili.com/video/BV1Ad4y1r7C4/) | [地址](https://ke.qq.com/course/5818923) | | 96 | 97 | 98 | # cicd实战 99 | 100 | | 学习方向 | 分析进阶视频 | 教程地址 | 备注 | 101 | |------------------------------------------------|---------|------------|-----| 102 | | 01_tekton全流水线实战和pipeline运行原理源码解读 | [地址](https://www.bilibili.com/video/BV13P4y1Z7Xv/) | [地址](https://ke.qq.com/course/5458555) | | 103 | 104 | 105 | 106 | 107 | # 直播答疑sre职业发展规划 108 | - [k8s-prometheus课程答疑和运维开发职业发展规划](https://ke.qq.com/course/5506477) 109 | 110 | 111 | # 关于白嫖和付费 112 | - 白嫖当然没关系，我已经贡献了很多文章和开源项目，当然还有免费的视频 113 | - 但是客观的讲，如果你能力超强是可以一直白嫖的，可以看源码。什么问题都可以解决 114 | - 看似免费的资料很多，但大部分都是边角料，核心的东西不会免费，更不会有大神给你答疑 115 | - thanos和kube-prometheus如果你对prometheus源码把控很好的话，再加上k8s知识的话就觉得不难了 116 | 117 | # 架构图 118 | ![image](./images/dynamic-sharding架构图.jpg) 119 | # pgw是什么 120 | [项目介绍](https://github.com/prometheus/pushgateway) 121 | 122 | ## pgw打点特点 123 | 124 | - 没有使用grouping对应的接口uri为 125 | ``` 126 | http://pushgateway_addr/metrics/job/ 127 | ``` 128 | - 使用grouping对应的接口uri为 129 | ``` 130 | http://pushgateway_addr/metrics/job/// 131 | ``` 132 | - put/post方法区别在于 put只替换metrics和job相同的 post替换label全部相同的 133 | # pgw单点问题 134 | ## 如果简单把pgw挂在lb后面的问题 135 | - lb后面rr轮询:如果不加控制的让push数据随机打到多个pushgateway实例上,prometheus无差别scrape会导致数据错乱,表现如下 136 | 137 | ![image](./images/pgw_miss.png) 138 | ![image](./images/pgw_miss2.png) 139 | - 根本原因是在t1时刻 指标的值为10 t2时刻 值为20 140 | - t1时刻轮询打点到了pgw-a上 t2时刻打点到了pgw-b上 141 | - 而promethues采集的时候两边全都采集导致本应该一直上升的值呈锯齿状 142 | ## 如果对uri做静态一致性哈希+prome静态配置pgw 143 | - 假设有3个pgw,前面lb根据request_uri做一致性哈希 144 | - promethues scrape时静态配置3个pgw实例 145 | ``` 146 | - job_name: pushgateway 147 | honor_labels: true 148 | honor_timestamps: true 149 | scrape_interval: 5s 150 | scrape_timeout: 4s 151 | metrics_path: /metrics 152 | scheme: http 153 | static_configs: 154 | - targets: 155 | - pgw-a:9091 156 | - pgw-b:9091 157 | 158 | ``` 159 | - 结果是可以做到哈希分流,但无法解决某个pgw实例挂掉,哈希到这个实例上面的请求失败问题 160 | 161 | ## 解决方案是: 动态一致性哈希分流+consul service_check 162 | ![image](./images/log.jpg) 163 | - dynamic-sharding服务启动会根据配置文件注册pgw服务到consul中 164 | - 由consul定时对pgw server做http check 165 | - push请求会根据请求path做一致性哈希分离,eg: 166 | ``` 167 | # 仅job不同 168 | - http://pushgateway_addr/metrics/job/job_a 169 | - http://pushgateway_addr/metrics/job/job_b 170 | - http://pushgateway_addr/metrics/job/job_c 171 | # label不同 172 | - http://pushgateway_addr/metrics/job/job_a/tag_a/value_a 173 | - http://pushgateway_addr/metrics/job/job_a/tag_a/value_b 174 | ``` 175 | - 当多个pgw中实例oom或异常重启,consul check service会将bad实例标记为down 176 | ~~- dynamic-sharding轮询检查实例数量变化~~ 177 | - dynamic-sharding 会`Watch` pgw节点数量变化 178 | - 重新生成哈希环,rehash将job分流 179 | - 同时promethues使用consul服务发现的pgw实例列表,无需手动变更 180 | - 采用redirect而不处理请求,简单高效 181 | - dynamic-sharding本身无状态,可启动多个实例作为流量接入层和pgw server之间 182 | - 扩容时同时也需要重启所有存量pgw服务 183 | - 不足:没有解决promethues单点问题和分片问题 184 | 项目地址: [https://github.com/ning1875/dynamic-sharding](https://github.com/ning1875/dynamic-sharding) 185 | 186 | ## 使用指南 187 | 188 | > 编译或下载 189 | ```shell script 190 | # 编译build 191 | $ git clone https://github.com/ning1875/dynamic-sharding.git 192 | $ cd dynamic-sharding && make 193 | # 下载 ：releases中直接下载tag包 194 | # 如https://github.com/ning1875/dynamic-sharding/releases/download/v2.0/dynamic-sharding-2.0.linux-amd64.tar.gz 195 | ``` 196 | 197 | > 修改配置 198 | ```shell script 199 | # 修改配置文件 200 | # 补充dynamic-sharding.yml中的信息: 201 | ``` 202 | 203 | > 启动dynamic-sharding服务 204 | 205 | ```shell script 206 | ./dynamic-sharding --config.file=dynamic-sharding.yml 207 | ``` 208 | 209 | > 和promtheus集成 210 | > Add the following text to your promtheus.yaml's scrape_configs section 211 | ```yaml 212 | scrape_configs: 213 | - job_name: pushgateway 214 | consul_sd_configs: 215 | - server: $cousul_api 216 | services: 217 | - pushgateway 218 | relabel_configs: 219 | - source_labels: ["__meta_consul_dc"] 220 | target_label: "dc" 221 | 222 | ``` 223 | > 调用方调用 dynamic-sharding接口即可 eg: http://localhost:9292/ 224 | 225 | ## 运维指南 226 | 227 | ### pgw节点故障 (无需关心) 228 | > eg: 启动了4个pgw实例,其中一个宕机了,则流量从4->3,以此类推 229 | 230 | 231 | ### pgw节点恢复 232 | > eg: 启动了4个pgw实例,其中一个宕机了,过一会儿恢复了,那么它会被consul unregister掉 233 | > 避免出现和扩容一样的case: 再次rehash的job 会持续在原有pgw被prome scrap，而且value不会更新 234 | 235 | 236 | 237 | ### 扩容 238 | > 修改yml配置文件将pgw servers 调整到扩容后的数量,重启服务dynamic-sharding 239 | > 注意 同时也要重启所有存量pgw服务,不然rehash的job 会持续在原有pgw被prome scrap，而且value不会更新 240 | 241 | 242 | 243 | ### 缩容 244 | 245 | ```shell script 246 | # 方法一 247 | ## 调用cousul api 248 | curl -vvv --request PUT 'http://$cousul_api/v1/agent/service/deregister/$pgw_addr_$pgw_port' 249 | eg: curl -vvv --request PUT 'http://localhost:8500/v1/agent/service/deregister/1.1.1.1_9091' 250 | 251 | ## 修改yml配置文件将pgw servers 调整到缩容后的数量，避免服务重启时再次注册缩容节点 252 | 253 | # 方法二 254 | ## 停止缩容节点服务,consul会将服务踢出,然后再注销 255 | 256 | ``` 257 | 258 | 259 | 260 | 261 | ### 使用python sdk时遇到的 urllib2.HTTPError: HTTP Error 307: Temporary Redirect 问题 262 | #### 原因 263 | - 查看代码得知python sdk在构造pgw实例时使用默认的handler方法，而其没有`follow_redirect`导致的 264 | 265 | ```python 266 | def push_to_gateway(gateway, job, registry, grouping_key=None, timeout=30,handler=default_handler): 267 | ``` 268 | 269 | #### 解决方法 270 | 271 | - 使用requests库自定义一个handler，初始化的时候指定 272 | 273 | ```python 274 | def custom_handle(url, method, timeout, headers, data): 275 | def handle(): 276 | h = {} 277 | for k, v in headers: 278 | h[k] = v 279 | if method == 'PUT': 280 | resp = requests.put(url, data=data, headers=h, timeout=timeout) 281 | elif method == 'POST': 282 | resp = requests.post(url, data=data, headers=h, timeout=timeout) 283 | elif method == 'DELETE': 284 | resp = requests.delete(url, data=data, headers=h, timeout=timeout) 285 | else: 286 | return 287 | if resp.status_code >= 400: 288 | raise IOError("error talking to pushgateway: {0} {1}".format(resp.status_code, resp.text)) 289 | return handle 290 | 291 | # push_to_gateway(push_addr, job='some_job', registry=r1, handler=custom_handle) 292 | ``` 293 | 294 | 295 | -------------------------------------------------------------------------------- /dynamic-sharding.yml: -------------------------------------------------------------------------------- 1 | consul_server: 2 | # consul api 地址 3 | addr: localhost:8500 4 | username: 5 | password: 6 | # promethues中consul sd中pgw service name 7 | register_service_name: pushgateway 8 | # 服务web addr 9 | http_listen_addr: :9292 10 | # pushgateway 信息 11 | pushgateway: 12 | # 端口号 13 | port: 9091 14 | # pushgateway ip列表 15 | servers: 16 | - 1.1.1.1 17 | - 1.1.1.2 18 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module dynamic-sharding 2 | 3 | go 1.13 4 | 5 | require ( 6 | github.com/gin-gonic/gin v1.7.0 7 | github.com/go-kit/kit v0.10.0 8 | github.com/hashicorp/consul/api v1.3.0 9 | github.com/oklog/run v1.1.0 10 | github.com/prometheus/common v0.10.0 11 | github.com/spaolacci/murmur3 v1.1.0 12 | gopkg.in/alecthomas/kingpin.v2 v2.2.6 13 | gopkg.in/yaml.v2 v2.2.8 14 | ) 15 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 2 | cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 3 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 4 | github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0= 5 | github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo= 6 | github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI= 7 | github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g= 8 | github.com/afex/hystrix-go 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-------------------------------------------------------------------------------- 1 | GOCMD=go 2 | GOBUILD=${GOCMD} build 3 | GOCLEAN=${GOCMD} clean 4 | GOTEST=${GOCMD} test 5 | GOGET=${GOCMD} get 6 | VERSION=1.0 7 | DATE= `date +%FT%T%z` 8 | 9 | 10 | BINARY_NAME="dynamic-sharding" 11 | BINARY_LINUX=${BINARY_NAME}_linux 12 | BUILDUSER="ning1875" 13 | LDFLAGES=" -X 'github.com/prometheus/common/version.BuildUser=${BUILDUSER}' -X 'github.com/prometheus/common/version.BuildDate=`date`' " 14 | all: deps build 15 | deps: 16 | export GOPROXY=http://goproxy.io 17 | export GO111MODULE=on 18 | build: 19 | ${GOBUILD} -v -ldflags ${LDFLAGES} -o ${BINARY_NAME} pkg/main.go 20 | test: 21 | ${GOTEST} -v ./... 22 | clean: 23 | ${GOCLEAN} 24 | rm -f ${BINARY_NAME} 25 | rm -f ${BINARY_LINUX} 26 | run: 27 | ${GOBUILD} -o ${BINARY_NAME} -v ./... 28 | ./${BINARY_NAME} 29 | 30 | 31 | build-linux: 32 | CGO_ENABLED=0 GOOS=linux GOARCH=amd64 ${BUILDTOOL} 33 | 34 | -------------------------------------------------------------------------------- /pkg/config/config.go: -------------------------------------------------------------------------------- 1 | package config 2 | 3 | import ( 4 | "io/ioutil" 5 | 6 | "gopkg.in/yaml.v2" 7 | "github.com/go-kit/kit/log/level" 8 | "github.com/go-kit/kit/log" 9 | ) 10 | 11 | type Config struct { 12 | ConsulServer *ConsulServerConfig `yaml:"consul_server"` 13 | HttpListenAddr string `yaml:"http_listen_addr"` 14 | PGW *PushGateWayConfig `yaml:"pushgateway"` 15 | } 16 | 17 | type ConsulServerConfig struct { 18 | Addr string `yaml:"addr,omitempty"` 19 | Username string `yaml:"username,omitempty"` 20 | Password string `yaml:"password,omitempty"` 21 | RegisterServiceName string `yaml:"register_service_name,omitempty"` 22 | } 23 | 24 | type PushGateWayConfig struct { 25 | Servers []string `yaml:"servers"` 26 | Port int `yaml:"port"` 27 | } 28 | 29 | func Load(s string) (*Config, error) { 30 | cfg := &Config{} 31 | 32 | err := yaml.UnmarshalStrict([]byte(s), cfg) 33 | if err != nil { 34 | return nil, err 35 | } 36 | return cfg, nil 37 | } 38 | 39 | func LoadFile(filename string, logger log.Logger) (*Config, error) { 40 | content, err := ioutil.ReadFile(filename) 41 | if err != nil { 42 | return nil, err 43 | } 44 | cfg, err := Load(string(content)) 45 | if err != nil { 46 | level.Error(logger).Log("msg", "parsing YAML file errr...", "error", err) 47 | } 48 | 49 | return cfg, nil 50 | } 51 | -------------------------------------------------------------------------------- /pkg/consistent/consistent.go: -------------------------------------------------------------------------------- 1 | // Copyright (C) 2012 Numerotron Inc. 2 | // Use of this source code is governed by an MIT-style license 3 | // that can be found in the LICENSE file. 4 | 5 | // Package consistent provides a consistent hashing function. 6 | // 7 | // Consistent hashing is often used to distribute requests to a changing set of servers. For example, 8 | // say you have some cache servers cacheA, cacheB, and cacheC. You want to decide which cache server 9 | // to use to look up information on a user. 10 | // 11 | // You could use a typical hash table and hash the user id 12 | // to one of cacheA, cacheB, or cacheC. But with a typical hash table, if you add or remove a server, 13 | // almost all keys will get remapped to different results, which basically could bring your service 14 | // to a grinding halt while the caches get rebuilt. 15 | // 16 | // With a consistent hash, adding or removing a server drastically reduces the number of keys that 17 | // get remapped. 18 | // 19 | // Read more about consistent hashing on wikipedia: http://en.wikipedia.org/wiki/Consistent_hashing 20 | // 21 | package consistent 22 | 23 | import ( 24 | "errors" 25 | "sort" 26 | "strconv" 27 | "sync" 28 | 29 | "github.com/spaolacci/murmur3" 30 | ) 31 | 32 | type uints []uint32 33 | 34 | // Len returns the length of the uints array. 35 | func (x uints) Len() int { return len(x) } 36 | 37 | // Less returns true if element i is less than element j. 38 | func (x uints) Less(i, j int) bool { return x[i] < x[j] } 39 | 40 | // Swap exchanges elements i and j. 41 | func (x uints) Swap(i, j int) { x[i], x[j] = x[j], x[i] } 42 | 43 | // ErrEmptyCircle is the error returned when trying to get an element when nothing has been added to hash. 44 | var ErrEmptyCircle = errors.New("empty circle") 45 | 46 | // Consistent holds the information about the members of the consistent hash circle. 47 | type Consistent struct { 48 | circle map[uint32]string 49 | members map[string]bool 50 | sortedHashes uints 51 | NumberOfReplicas int 52 | count int64 53 | scratch [64]byte 54 | sync.RWMutex 55 | } 56 | 57 | // New creates a new Consistent object with a default setting of 20 replicas for each entry. 58 | // 59 | // To change the number of replicas, set NumberOfReplicas before adding entries. 60 | func New() *Consistent { 61 | c := new(Consistent) 62 | c.NumberOfReplicas = 20 63 | c.circle = make(map[uint32]string) 64 | c.members = make(map[string]bool) 65 | return c 66 | } 67 | 68 | // eltKey generates a string key for an element with an index. 69 | func (c *Consistent) eltKey(elt string, idx int) string { 70 | // return elt + "|" + strconv.Itoa(idx) 71 | return strconv.Itoa(idx) + elt 72 | } 73 | 74 | // Add inserts a string element in the consistent hash. 75 | func (c *Consistent) Add(elt string) { 76 | c.Lock() 77 | defer c.Unlock() 78 | c.add(elt) 79 | } 80 | 81 | // need c.Lock() before calling 82 | func (c *Consistent) add(elt string) { 83 | for i := 0; i < c.NumberOfReplicas; i++ { 84 | c.circle[c.hashKey(c.eltKey(elt, i))] = elt 85 | } 86 | c.members[elt] = true 87 | c.updateSortedHashes() 88 | c.count++ 89 | } 90 | 91 | // Remove removes an element from the hash. 92 | func (c *Consistent) Remove(elt string) { 93 | c.Lock() 94 | defer c.Unlock() 95 | c.remove(elt) 96 | } 97 | 98 | // need c.Lock() before calling 99 | func (c *Consistent) remove(elt string) { 100 | for i := 0; i < c.NumberOfReplicas; i++ { 101 | delete(c.circle, c.hashKey(c.eltKey(elt, i))) 102 | } 103 | delete(c.members, elt) 104 | c.updateSortedHashes() 105 | c.count-- 106 | } 107 | 108 | // Set sets all the elements in the hash. If there are existing elements not 109 | // present in elts, they will be removed. 110 | func (c *Consistent) Set(elts []string) { 111 | c.Lock() 112 | defer c.Unlock() 113 | for k := range c.members { 114 | found := false 115 | for _, v := range elts { 116 | if k == v { 117 | found = true 118 | break 119 | } 120 | } 121 | if !found { 122 | c.remove(k) 123 | } 124 | } 125 | for _, v := range elts { 126 | _, exists := c.members[v] 127 | if exists { 128 | continue 129 | } 130 | c.add(v) 131 | } 132 | } 133 | 134 | func (c *Consistent) Members() []string { 135 | c.RLock() 136 | defer c.RUnlock() 137 | var m []string 138 | for k := range c.members { 139 | m = append(m, k) 140 | } 141 | return m 142 | } 143 | 144 | // Get returns an element close to where name hashes to in the circle. 145 | func (c *Consistent) Get(name string) (string, error) { 146 | c.RLock() 147 | defer c.RUnlock() 148 | if len(c.circle) == 0 { 149 | return "", ErrEmptyCircle 150 | } 151 | key := c.hashKey(name) 152 | i := c.search(key) 153 | return c.circle[c.sortedHashes[i]], nil 154 | } 155 | 156 | func (c *Consistent) search(key uint32) (i int) { 157 | f := func(x int) bool { 158 | return c.sortedHashes[x] > key 159 | } 160 | i = sort.Search(len(c.sortedHashes), f) 161 | if i >= len(c.sortedHashes) { 162 | i = 0 163 | } 164 | return 165 | } 166 | 167 | // GetTwo returns the two closest distinct elements to the name input in the circle. 168 | func (c *Consistent) GetTwo(name string) (string, string, error) { 169 | c.RLock() 170 | defer c.RUnlock() 171 | if len(c.circle) == 0 { 172 | return "", "", ErrEmptyCircle 173 | } 174 | key := c.hashKey(name) 175 | i := c.search(key) 176 | a := c.circle[c.sortedHashes[i]] 177 | 178 | if c.count == 1 { 179 | return a, "", nil 180 | } 181 | 182 | start := i 183 | var b string 184 | for i = start + 1; i != start; i++ { 185 | if i >= len(c.sortedHashes) { 186 | i = 0 187 | } 188 | b = c.circle[c.sortedHashes[i]] 189 | if b != a { 190 | break 191 | } 192 | } 193 | return a, b, nil 194 | } 195 | 196 | // GetN returns the N closest distinct elements to the name input in the circle. 197 | func (c *Consistent) GetN(name string, n int) ([]string, error) { 198 | c.RLock() 199 | defer c.RUnlock() 200 | 201 | if len(c.circle) == 0 { 202 | return nil, ErrEmptyCircle 203 | } 204 | 205 | if c.count < int64(n) { 206 | n = int(c.count) 207 | } 208 | 209 | var ( 210 | key = c.hashKey(name) 211 | i = c.search(key) 212 | start = i 213 | res = make([]string, 0, n) 214 | elem = c.circle[c.sortedHashes[i]] 215 | ) 216 | 217 | res = append(res, elem) 218 | 219 | if len(res) == n { 220 | return res, nil 221 | } 222 | 223 | for i = start + 1; i != start; i++ { 224 | if i >= len(c.sortedHashes) { 225 | i = 0 226 | } 227 | elem = c.circle[c.sortedHashes[i]] 228 | if !sliceContainsMember(res, elem) { 229 | res = append(res, elem) 230 | } 231 | if len(res) == n { 232 | break 233 | } 234 | } 235 | 236 | return res, nil 237 | } 238 | 239 | func (c *Consistent) hashKey(key string) uint32 { 240 | if len(key) < 64 { 241 | var scratch [64]byte 242 | copy(scratch[:], key) 243 | //return crc32.ChecksumIEEE(scratch[:len(key)]) 244 | return murmur3.Sum32(scratch[:len(key)]) 245 | } 246 | //return crc32.ChecksumIEEE([]byte(key)) 247 | return murmur3.Sum32([]byte(key)) 248 | } 249 | 250 | func (c *Consistent) updateSortedHashes() { 251 | hashes := c.sortedHashes[:0] 252 | //reallocate if we're holding on to too much (1/4th) 253 | if cap(c.sortedHashes)/(c.NumberOfReplicas*4) > len(c.circle) { 254 | hashes = nil 255 | } 256 | for k := range c.circle { 257 | hashes = append(hashes, k) 258 | } 259 | sort.Sort(hashes) 260 | c.sortedHashes = hashes 261 | } 262 | 263 | func sliceContainsMember(set []string, member string) bool { 264 | for _, m := range set { 265 | if m == member { 266 | return true 267 | } 268 | } 269 | return false 270 | } 271 | -------------------------------------------------------------------------------- /pkg/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "time" 6 | 7 | "context" 8 | "os" 9 | "os/signal" 10 | "path/filepath" 11 | "syscall" 12 | 13 | "github.com/gin-gonic/gin" 14 | "github.com/go-kit/kit/log" 15 | "github.com/go-kit/kit/log/level" 16 | "github.com/oklog/run" 17 | "github.com/prometheus/common/promlog" 18 | promlogflag "github.com/prometheus/common/promlog/flag" 19 | "github.com/prometheus/common/version" 20 | "gopkg.in/alecthomas/kingpin.v2" 21 | 22 | "dynamic-sharding/pkg/config" 23 | "dynamic-sharding/pkg/sd" 24 | "dynamic-sharding/pkg/web" 25 | ) 26 | 27 | func main() { 28 | 29 | var ( 30 | app = kingpin.New(filepath.Base(os.Args[0]), "The dynamic-sharding") 31 | //configFile = kingpin.Flag("config.file", "docker-mon configuration file path.").Default("docker-mon.yml").String() 32 | configFile = app.Flag("config.file", "docker-mon configuration file path.").Default("dynamic-sharding.yml").String() 33 | ) 34 | promlogConfig := promlog.Config{} 35 | 36 | app.Version(version.Print("dynamic-sharding")) 37 | app.HelpFlag.Short('h') 38 | promlogflag.AddFlags(app, &promlogConfig) 39 | kingpin.MustParse(app.Parse(os.Args[1:])) 40 | 41 | var logger log.Logger 42 | logger = func(config *promlog.Config) log.Logger { 43 | var ( 44 | l log.Logger 45 | le level.Option 46 | ) 47 | if config.Format.String() == "logfmt" { 48 | l = log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr)) 49 | } else { 50 | l = log.NewJSONLogger(log.NewSyncWriter(os.Stderr)) 51 | } 52 | 53 | switch config.Level.String() { 54 | case "debug": 55 | le = level.AllowDebug() 56 | case "info": 57 | le = level.AllowInfo() 58 | case "warn": 59 | le = level.AllowWarn() 60 | case "error": 61 | le = level.AllowError() 62 | } 63 | l = level.NewFilter(l, le) 64 | l = log.With(l, "ts", log.TimestampFormat( 65 | func() time.Time { return time.Now().Local() }, 66 | "2006-01-02T15:04:05.000Z07:00", 67 | ), "caller", log.DefaultCaller) 68 | return l 69 | }(&promlogConfig) 70 | 71 | // new grpc manager 72 | ctxAll, cancelAll := context.WithCancel(context.Background()) 73 | sc, err := config.LoadFile(*configFile, logger) 74 | if err != nil { 75 | level.Error(logger).Log("msg", "config.LoadFil Error, exiting ...", "error", err) 76 | return 77 | } 78 | // init consul client 79 | client, err := sd.NewConsulClient(sc.ConsulServer.Addr, logger) 80 | 81 | if err != nil || client == nil { 82 | level.Error(logger).Log("msg", "NewConsulClient Error, exiting ...", "error", err) 83 | return 84 | } 85 | 86 | // init node hash ring 87 | var ss []string 88 | for _, i := range sc.PGW.Servers { 89 | ss = append(ss, fmt.Sprintf("%s:%d", i, sc.PGW.Port)) 90 | } 91 | 92 | sd.NewConsistentHashNodesRing(ss) 93 | 94 | // register service 95 | errors := sd.RegisterFromFile(client, sc.PGW.Servers, sc.ConsulServer.RegisterServiceName, sc.PGW.Port) 96 | if len(errors) > 0 { 97 | level.Error(logger).Log("msg", "RegisterFromFile Error", "error", errors) 98 | } 99 | 100 | var g run.Group 101 | { 102 | // Termination handler. 103 | term := make(chan os.Signal, 1) 104 | signal.Notify(term, os.Interrupt, syscall.SIGTERM) 105 | cancel := make(chan struct{}) 106 | g.Add( 107 | 108 | func() error { 109 | select { 110 | case <-term: 111 | level.Warn(logger).Log("msg", "Received SIGTERM, exiting gracefully...") 112 | cancelAll() 113 | return nil 114 | //TODO clean work here 115 | case <-cancel: 116 | level.Warn(logger).Log("msg", "server finally exit...") 117 | return nil 118 | } 119 | }, 120 | func(err error) { 121 | close(cancel) 122 | 123 | }, 124 | ) 125 | } 126 | 127 | { 128 | // metrics web handler. 129 | g.Add(func() error { 130 | level.Info(logger).Log("msg", "start web service Listening on address", "address", sc.HttpListenAddr) 131 | gin.SetMode(gin.ReleaseMode) 132 | routes := gin.Default() 133 | errchan := make(chan error, 1) 134 | 135 | go func() { 136 | errchan <- web.StartGin(sc.HttpListenAddr, routes) 137 | }() 138 | select { 139 | case err := <-errchan: 140 | level.Error(logger).Log("msg", "Error starting HTTP server", "err", err) 141 | return err 142 | case <-ctxAll.Done(): 143 | level.Info(logger).Log("msg", "Web service Exit..") 144 | return nil 145 | 146 | } 147 | 148 | }, func(err error) { 149 | cancelAll() 150 | }) 151 | } 152 | 153 | { 154 | // WatchService manager. 155 | g.Add(func() error { 156 | err := client.RunRefreshServiceNode(ctxAll, sc.ConsulServer.RegisterServiceName, sc.ConsulServer.Addr) 157 | if err != nil { 158 | level.Error(logger).Log("msg", "watchService_error", "error", err) 159 | } 160 | return err 161 | }, func(err error) { 162 | cancelAll() 163 | }) 164 | } 165 | g.Run() 166 | } 167 | -------------------------------------------------------------------------------- /pkg/sd/rings.go: -------------------------------------------------------------------------------- 1 | package sd 2 | 3 | import ( 4 | "sync" 5 | "sort" 6 | "context" 7 | "strings" 8 | 9 | "github.com/go-kit/kit/log" 10 | "github.com/go-kit/kit/log/level" 11 | 12 | "dynamic-sharding/pkg/consistent" 13 | ) 14 | 15 | const numberOfReplicas = 500 16 | 17 | var ( 18 | PgwNodeRing *ConsistentHashNodeRing 19 | NodeUpdateChan = make(chan []string, 1) 20 | ) 21 | 22 | // 一致性哈希环,用于管理服务器节点. 23 | type ConsistentHashNodeRing struct { 24 | ring *consistent.Consistent 25 | sync.RWMutex 26 | } 27 | 28 | func NewConsistentHashNodesRing(nodes []string) *ConsistentHashNodeRing { 29 | ret := &ConsistentHashNodeRing{ring: consistent.New()} 30 | 31 | ret.SetNumberOfReplicas(numberOfReplicas) 32 | ret.SetNodes(nodes) 33 | PgwNodeRing = ret 34 | return ret 35 | } 36 | 37 | func (this *ConsistentHashNodeRing) ReShardRing(nodes []string) { 38 | this.Lock() 39 | defer this.Unlock() 40 | newRing := consistent.New() 41 | newRing.NumberOfReplicas = numberOfReplicas 42 | for _, node := range nodes { 43 | newRing.Add(node) 44 | } 45 | this.ring = newRing 46 | } 47 | 48 | // 根据pk,获取node节点. chash(pk) -> node 49 | func (this *ConsistentHashNodeRing) GetNode(pk string) (string, error) { 50 | this.RLock() 51 | defer this.RUnlock() 52 | 53 | return this.ring.Get(pk) 54 | } 55 | 56 | func (this *ConsistentHashNodeRing) SetNodes(nodes []string) { 57 | for _, node := range nodes { 58 | this.ring.Add(node) 59 | } 60 | } 61 | 62 | func (this *ConsistentHashNodeRing) SetNumberOfReplicas(num int32) { 63 | this.ring.NumberOfReplicas = int(num) 64 | } 65 | 66 | func StringSliceEqualBCE(a, b []string) bool { 67 | if len(a) != len(b) { 68 | return false 69 | } 70 | 71 | if (a == nil) != (b == nil) { 72 | return false 73 | } 74 | 75 | b = b[:len(a)] 76 | for i, v := range a { 77 | if v != b[i] { 78 | return false 79 | } 80 | } 81 | 82 | return true 83 | } 84 | 85 | func RunReshardHashRing(ctx context.Context, logger log.Logger) { 86 | 87 | level.Info(logger).Log("msg", "RunRefreshServiceNode start....") 88 | for { 89 | select { 90 | case nodes := <-NodeUpdateChan: 91 | 92 | 93 | oldNodes := PgwNodeRing.ring.Members() 94 | sort.Strings(nodes) 95 | sort.Strings(oldNodes) 96 | isEq := StringSliceEqualBCE(nodes, oldNodes) 97 | if isEq == false { 98 | level.Info(logger).Log("msg", "RunReshardHashRing_node_update_reshard", "old_num", len(oldNodes), "new_num", len(nodes), "oldnodes", strings.Join(oldNodes, ","), "newnodes", strings.Join(nodes, ","), ) 99 | PgwNodeRing.ReShardRing(nodes) 100 | } else { 101 | level.Info(logger).Log("msg", "RunReshardHashRing_node_same", "nodes", strings.Join(nodes, ",")) 102 | 103 | } 104 | case <-ctx.Done(): 105 | level.Info(logger).Log("msg", "RunReshardHashRingQuit") 106 | return 107 | } 108 | 109 | } 110 | } 111 | -------------------------------------------------------------------------------- /pkg/sd/sd.go: -------------------------------------------------------------------------------- 1 | package sd 2 | 3 | import ( 4 | "fmt" 5 | "context" 6 | "strings" 7 | 8 | consul "github.com/hashicorp/consul/api" 9 | "github.com/hashicorp/consul/api/watch" 10 | "github.com/go-kit/kit/log" 11 | "github.com/go-kit/kit/log/level" 12 | ) 13 | 14 | type client struct { 15 | consul *consul.Client 16 | logger log.Logger 17 | } 18 | 19 | type Client interface { 20 | // Get a Service from consul 21 | //GetService(string, string) ([]string, error) 22 | // register a service with local agent 23 | ServiceRegister(string, string, int) error 24 | // Deregister a service with local agent 25 | DeRegister(string) error 26 | } 27 | 28 | func NewConsulClient(addr string, logger log.Logger) (*client, error) { 29 | config := consul.DefaultConfig() 30 | config.Address = addr 31 | c, err := consul.NewClient(config) 32 | if err != nil { 33 | return nil, err 34 | } 35 | return &client{consul: c, logger: logger}, nil 36 | } 37 | 38 | // Register a service with consul local agent 39 | func (c *client) ServiceRegister(srvName, srvHost string, srvPort int) error { 40 | 41 | reg := new(consul.AgentServiceRegistration) 42 | reg.Name = srvName 43 | 44 | thisId := fmt.Sprintf("%s_%d", srvHost, srvPort) 45 | reg.ID = thisId 46 | reg.Port = srvPort 47 | reg.Address = srvHost 48 | level.Info(c.logger).Log("msg", "ServiceRegisterStart", "id", thisId) 49 | //增加check 50 | check := new(consul.AgentServiceCheck) 51 | check.HTTP = fmt.Sprintf("http://%s:%d%s", reg.Address, reg.Port, "/-/healthy") 52 | //设置超时 5s。 53 | check.Timeout = "2s" 54 | check.DeregisterCriticalServiceAfter = "5s" 55 | //设置间隔 5s。 56 | check.Interval = "5s" 57 | //注册check服务。 58 | reg.Check = check 59 | 60 | return c.consul.Agent().ServiceRegister(reg) 61 | } 62 | 63 | // DeRegister a service with consul local agent 64 | func (c *client) DeRegister(id string) error { 65 | return c.consul.Agent().ServiceDeregister(id) 66 | } 67 | 68 | //// Service return a service 69 | //func (c *client) GetService(service, tag string) ([]string, error) { 70 | // passingOnly := true 71 | // addrs, _, err := c.consul.Health().Service(service, tag, passingOnly, nil) 72 | // if len(addrs) == 0 && err == nil { 73 | // return nil, fmt.Errorf("service ( %s ) was not found", service) 74 | // } 75 | // 76 | // if err != nil { 77 | // return nil, err 78 | // } 79 | // var hs []string 80 | // 81 | // for _, a := range addrs { 82 | // 83 | // hs = append(hs, fmt.Sprintf("%s:%d", a.Service.Address, a.Service.Port)) 84 | // } 85 | // if len(hs) > 0 { 86 | // NodeUpdateChan <- hs 87 | // } 88 | // 89 | // return hs, nil 90 | //} 91 | 92 | func RegisterFromFile(c *client, servers []string, srvName string, srvPort int) (errors []error) { 93 | 94 | for _, addr := range servers { 95 | 96 | e := c.ServiceRegister(srvName, addr, srvPort) 97 | if e != nil { 98 | errors = append(errors, e) 99 | } 100 | 101 | } 102 | return 103 | } 104 | func (c *client) RunRefreshServiceNode(ctx context.Context, srvName string, consulServerAddr string) error { 105 | level.Info(c.logger).Log("msg", "RunRefreshServiceNode start....") 106 | go RunReshardHashRing(ctx, c.logger) 107 | 108 | errchan := make(chan error, 1) 109 | go func() { 110 | errchan <- c.WatchService(ctx, srvName, consulServerAddr) 111 | 112 | }() 113 | select { 114 | case <-ctx.Done(): 115 | level.Info(c.logger).Log("msg", "RunRefreshServiceNode_receive_quit_signal_and_quit") 116 | return nil 117 | case err := <-errchan: 118 | level.Error(c.logger).Log("msg", "WatchService_get_error", "err", err) 119 | return err 120 | } 121 | return nil 122 | } 123 | 124 | func (c *client) WatchService(ctx context.Context, srvName string, consulServerAddr string) error { 125 | 126 | watchConfig := make(map[string]interface{}) 127 | 128 | watchConfig["type"] = "service" 129 | watchConfig["service"] = srvName 130 | watchConfig["handler_type"] = "script" 131 | watchConfig["passingonly"] = true 132 | watchPlan, err := watch.Parse(watchConfig) 133 | if err != nil { 134 | level.Error(c.logger).Log("msg", "create_Watch_by_watch_config_error", "srv_name", srvName, "error", err) 135 | return err 136 | 137 | } 138 | 139 | watchPlan.Handler = func(lastIndex uint64, result interface{}) { 140 | if entries, ok := result.([]*consul.ServiceEntry); ok { 141 | var hs []string 142 | 143 | for _, a := range entries { 144 | 145 | hs = append(hs, fmt.Sprintf("%s:%d", a.Service.Address, a.Service.Port)) 146 | } 147 | if len(hs) > 0 { 148 | level.Info(c.logger).Log("msg", "service_node_change_by_healthy_check", "srv_name", srvName, "num", len(hs), "detail", strings.Join(hs, " ")) 149 | NodeUpdateChan <- hs 150 | } 151 | 152 | } 153 | 154 | } 155 | if err := watchPlan.Run(consulServerAddr); err != nil { 156 | level.Error(c.logger).Log("msg", "watchPlan_run_error", "srv_name", srvName, "error", err) 157 | return err 158 | } 159 | return nil 160 | 161 | } 162 | -------------------------------------------------------------------------------- /pkg/web/controller/pushgateway/pgw_controller.go: -------------------------------------------------------------------------------- 1 | package pushgateway 2 | 3 | import ( 4 | "log" 5 | "net/http" 6 | 7 | "github.com/gin-gonic/gin" 8 | 9 | "dynamic-sharding/pkg/sd" 10 | ) 11 | 12 | func PushMetricsGetHash(c *gin.Context) { 13 | 14 | path := c.Request.URL.Path 15 | 16 | node, err := sd.PgwNodeRing.GetNode(path) 17 | if err != nil { 18 | c.String(http.StatusInternalServerError, "get_node_from_hashring_error") 19 | } 20 | 21 | nextUrl := "http://" + node + path 22 | log.Printf("[PushMetrics][request_path:%s][redirect_url:%s]", path, nextUrl) 23 | c.String(http.StatusOK, "nextUrl:"+nextUrl) 24 | 25 | } 26 | 27 | func PushMetricsRedirect(c *gin.Context) { 28 | 29 | path := c.Request.URL.Path 30 | 31 | node, err := sd.PgwNodeRing.GetNode(path) 32 | if err != nil { 33 | c.String(http.StatusInternalServerError, "get_node_from_hashring_error") 34 | } 35 | 36 | nextUrl := "http://" + node + path 37 | log.Printf("[PushMetrics][request_path:%s][redirect_url:%s]", path, nextUrl) 38 | //c.Redirect(http.StatusMovedPermanently, nextUrl) 39 | c.Redirect(http.StatusTemporaryRedirect, nextUrl) 40 | //c.Redirect(http.StatusPermanentRedirect, nextUrl) 41 | c.Abort() 42 | 43 | } 44 | -------------------------------------------------------------------------------- /pkg/web/controller/pushgateway/pgw_route.go: -------------------------------------------------------------------------------- 1 | package pushgateway 2 | 3 | import ( 4 | "net/http" 5 | 6 | "github.com/gin-gonic/gin" 7 | ) 8 | 9 | func Routes(r *gin.Engine) { 10 | 11 | authapi := r.Group("/metrics/job") 12 | authapi.GET("/*any", PushMetricsGetHash) 13 | authapi.PUT("/*any", PushMetricsRedirect) 14 | authapi.POST("/*any", PushMetricsRedirect) 15 | 16 | tapi := r.Group("/test") 17 | tapi.GET("/v1", func(c *gin.Context) { 18 | c.String(http.StatusOK, "Hello, I'm pgw gateway+ (｡A｡)") 19 | }) 20 | } 21 | -------------------------------------------------------------------------------- /pkg/web/gin.go: -------------------------------------------------------------------------------- 1 | package web 2 | 3 | import ( 4 | "time" 5 | "net/http" 6 | 7 | "github.com/gin-gonic/gin" 8 | 9 | "dynamic-sharding/pkg/web/controller/pushgateway" 10 | ) 11 | 12 | func StartGin(port string, r *gin.Engine) error { 13 | 14 | pushgateway.Routes(r) 15 | s := &http.Server{ 16 | Addr: port, 17 | Handler: r, 18 | ReadTimeout: time.Duration(5) * time.Second, 19 | WriteTimeout: time.Duration(5) * time.Second, 20 | MaxHeaderBytes: 1 << 20, 21 | } 22 | 23 | err := s.ListenAndServe() 24 | return err 25 | 26 | } 27 | --------------------------------------------------------------------------------