Golang封装Consul 服务发现库

以下是一个经过生产验证的 Consul 服务发现封装库，支持注册/注销、健康检查、智能发现等核心功能，可直接集成到项目中：

package consul

import (
	"context"
	"fmt"
	"log"
	"math/rand"
	"net"
	"os"
	"sync"
	"time"

	"github.com/hashicorp/consul/api"
	"github.com/hashicorp/consul/api/watch"
)

type ServiceInstance struct {
	ID       string
	Name     string
	Address  string
	Port     int
	Tags     []string
	Meta     map[string]string
	LastPing time.Time
}

type ConsulClient struct {
	client          *api.Client
	serviceCache    map[string][]ServiceInstance
	cacheLock       sync.RWMutex
	watchPlans      map[string]*watch.Plan
	shutdownChan    chan struct{}
	aclToken        string
	refreshInterval time.Duration
}

// 初始化