feat(ip-location): implement IP location querying and GeoIP database management

internal/svc/mmdb.go

@@ -0,0 +1,74 @@
+package svc
+
+import (
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"github.com/oschwald/geoip2-golang"
+	"github.com/perfect-panel/server/pkg/logger"
+)
+
+const GeoIPDBURL = "https://raw.githubusercontent.com/adysec/IP_database/main/geolite/GeoLite2-City.mmdb"
+
+type IPLocation struct {
+	Path string
+	DB   *geoip2.Reader
+}
+
+func NewIPLocation(path string) (*IPLocation, error) {
+
+	// 检查文件是否存在
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		logger.Infof("[GeoIP] Database not found, downloading from %s", GeoIPDBURL)
+		// 文件不存在，下载数据库
+		err := DownloadGeoIPDatabase(GeoIPDBURL, path)
+		if err != nil {
+			logger.Errorf("[GeoIP] Failed to download database: %v", err.Error())
+			return nil, err
+		}
+		logger.Infof("[GeoIP] Database downloaded successfully")
+	}
+
+	db, err := geoip2.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	return &IPLocation{
+		Path: path,
+		DB:   db,
+	}, nil
+}
+
+func (ipLoc *IPLocation) Close() error {
+	return ipLoc.DB.Close()
+}
+
+func DownloadGeoIPDatabase(url, path string) error {
+
+	// 创建路径, 确保目录存在
+	err := os.MkdirAll(filepath.Dir(path), 0755)
+	if err != nil {
+		logger.Errorf("[GeoIP] Failed to create directory: %v", err.Error())
+		return err
+	}
+
+	// 创建文件
+	out, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	// 请求远程文件
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	// 保存文件
+	_, err = io.Copy(out, resp.Body)
+	return err
+}

internal/svc/serviceContext.go

@@ -37,6 +37,7 @@ type ServiceContext struct {
 	Config       config.Config
 	Queue        *asynq.Client
 	ExchangeRate float64
+	GeoIP        *IPLocation
 
 	//NodeCache   *cache.NodeCacheClient
 	AuthModel   auth.Model
@@ -68,9 +69,17 @@ func NewServiceContext(c config.Config) *ServiceContext {
 	db, err := orm.ConnectMysql(orm.Mysql{
 		Config: c.MySQL,
 	})
+
 	if err != nil {
 		panic(err.Error())
 	}
+
+	// IP location initialize
+	geoIP, err := NewIPLocation("./cache/GeoLite2-City.mmdb")
+	if err != nil {
+		panic(err.Error())
+	}
+
 	rds := redis.NewClient(&redis.Options{
 		Addr:     c.Redis.Host,
 		Password: c.Redis.Pass,
@@ -89,6 +98,7 @@ func NewServiceContext(c config.Config) *ServiceContext {
 		Config:       c,
 		Queue:        NewAsynqClient(c),
 		ExchangeRate: 1.0,
+		GeoIP:        geoIP,
 		//NodeCache:   cache.NewNodeCacheClient(rds),
 		AuthLimiter: authLimiter,
 		AdsModel:    ads.NewModel(db, rds),