详解go-micro微服务consul配置及注册中心

docekr pull consul

docker run -d -p 8500:8500 consul

docker ps

name: "Account"
title: "账号功能"
mode: "dev"
port: 9580
version: "v0.0.1"
log:
  level: "debug"
  filename: "Account.log"
  max_size: 200
  max_age: 30
  max_backips: 7
mysql:
  host: "127.0.0.1"
  port: 3306
  user: "root"
  password: "xxx"
  dbname: "micro"
  max_open_conns: 200
  max_idle_conns: "50"
redis:
  host: "127.0.0.1"
  port: 6379
  password: "xxx"
  db: 4
  pool_size: 100
email:
  user: "xxx@qq.com"
  pass: "xxx"
  host: "smtp.qq.com"
  port: 465
  rename: "Account"
# 配置、注册中心
consul:
  host: "localhost"
  port: 8500
  prefix: "/micro/config"
  consulRegistry: "127.0.0.1:8500"
# 链路追踪
jaeger:
  serviceName: "go.micro.service.account"
  addr: "localhost:6831"
# 监控服务
prometheus:
  host: "0.0.0.0"
  port: 9089
# 限流
ratelimit:
  QPS: 1000
# 微服务
micro:
  name: "go.micro.service.account"
  version: "latest"
  address: ":9580"

// GetConsulConfig 设置配置中心
func GetConsulConfig(host string, port int64, prefix string) (config.Config, error) {
   consulSource := consul.NewSource(
      //设置配置中心的地址
      consul.WithAddress(host+":"+strconv.FormatInt(port, 10)),
      //设置前缀，不设置默认前缀 /micro/config
      consul.WithPrefix(prefix),
      //是否移除前缀，这里是设置为true，表示可以不带前缀直接获取对应配置
      consul.StripPrefix(true),
   )
   //配置初始化
   newConfig, err := config.NewConfig()
   if err != nil {
      return newConfig, err
   }
   //加载配置
   err = newConfig.Load(consulSource)
   return newConfig, err
}

type Account struct {
   Name    string `json:"name"`
   Title   string `json:"title"`
   Mode    string `json:"mode"`
   Port    int64  `json:"port"`
   Version string `json:"version"`
}
type Mysql struct {
   Host     string `json:"host"`
   User     string `json:"user"`
   Pwd      string `json:"pwd"`
   Database string `json:"database"`
   Port     int64  `json:"port"`
}
type Log struct {
   Level string `json:"level"`
   Filename string `json:"filename"`
   MaxSize int64 `json:"max_size"`
   MaxAge int64 `json:"max_age"`
   MaxBackips int64 `json:"max_backips"`
}
type Redis struct {
   Host string `json:"host"`
   Port int64 `json:"port"`
   Password string `json:"password"`
   Db int64 `json:"db"`
   PoolSize int64 `json:"pool_size"`
}
type Email struct {
   User string `json:"user"`
   Pass string `json:"pass"`
   Host string `json:"host"`
   Port int64 `json:"port"`
   Rename string `json:"rename"`
}
type Consul struct {
   Host string `json:"host"`
   Port int64 `json:"port"`
   Prefix string `json:"prefix"`
   ConsulRegistry string `json:"consulRegistry"`
}
type Jaeger struct {
   ServiceName string `json:"serviceName"`
   Addr string `json:"addr"`
}
type Prometheus struct {
   Host string `json:"host"`
   Port int64 `json:"port"`
}
type Ratelimit struct {
   QPS int64 `json:"QPS"`
}
type Micro struct {
   Name string `json:"name"`
   Version string `json:"version"`
   Address string `json:"address"`
}
type ConsulConfig struct {
   Account Account `json:"account"`
   Mysql Mysql `json:"mysql"`
   Log Log `json:"log"`
   Redis Redis `json:"redis"`
   Email Email `json:"email"`
   Consul Consul `json:"consul"`
   Jaeger Jaeger `json:"jaeger"`
   Prometheus Prometheus `json:"prometheus"`
   Ratelimit Ratelimit `json:"ratelimit"`
   Micro Micro `json:"micro"`
}

var(
   ConsulInfo *ConsulConfig
)
// GetAccountFromConsul 获取 consul 的配置
func GetAccountFromConsul(config config.Config, path ...string) error {
   consulData := &ConsulConfig{}
   config.Get(path...).Scan(consulData)
   ConsulInfo = consulData
   return nil
}

{
"account":{
"name": "Account",
"title": "账号功能",
"mode": "dev",
"port": 9580,
"version": "v0.0.1"
},
"log":{
"level": "debug",
"filename": "Account.log",
"max_size": 200,
"max_age": 30,
"max_backips": 7
},
"mysql":{
"host":"127.0.0.1",
"user":"root",
"pwd":"xxx",
"database":"micro",
"port":3306
},
"redis":{
"host": "127.0.0.1",
"port": 6379,
"password": "123456",
"db": 4,
"pool_size": 100
},
"consul":{
"host": "localhost",
"port": 8500,
"prefix": "/micro/config",
"consulRegistry": "127.0.0.1:8500"
},
"email":{
"user": "xxx@qq.com",
"pass": "xxx",
"host": "smtp.qq.com",
"port": 465,
"rename": "Account"
},
"jaeger":{
"serviceName": "go.micro.service.account",
"addr": "localhost:6831"
},
"prometheus":{
"host": "0.0.0.0",
"port": 9089
},
"ratelimit":{
"QPS": 1000
},
"micro":{
"name": "go.micro.service.account",
"version": "latest",
"address": ":9580"
}
}

// 1.配置中心
consulConfig, err := micro.GetConsulConfig("localhost", 8500, "/micro/config")
if err != nil {
   fmt.Printf("Init consulConfig failed, err: %v\n", err)
}
// 2.注册中心
consulRegistry := consul.NewRegistry(func(options *registry.Options) {
   options.Addrs = []string{
      "127.0.0.1:8500",
   }
})
if err := micro.GetAccountFromConsul(consulConfig, "account"); err != nil {
   fmt.Printf("Init consul failed, err: %v\n", err)
}
fmt.Println(micro.ConsulInfo)