Files
OpenFlare/internal/apps/openflare/agent/access_log_region.go
T
ryan 2b69f4d8d7 #60 GeoIP 共享单例化:消除访问日志 region 解析每批次的 mmdb 重建开销与无界缓存,ctx 贯穿下载路径
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2026-08-26 13:48:44 +08:00

91 lines
2.6 KiB
Go

// Copyright 2026 Arctel.net
// SPDX-License-Identifier: Apache-2.0
// Package agent implements the OpenFlare agent protocol: node registration,
// heartbeat processing, access-log ingestion, and related middleware.
package agent
import (
"context"
"log/slog"
"net"
"strings"
"sync"
pkggeoip "github.com/Rain-kl/Wavelet/pkg/geoip"
)
// 共享一个 GeoIP 服务实例:mmdb 打开(mmap + 解析元数据)成本不低,缺文件时还会
// 同步下载,绝不能每个上报批次重建。maxminddb.Reader 并发安全,无需额外加锁。
// 初始化失败不锁存:下一批上报会重试(与旧行为一致)。
var (
sharedAccessLogGeoMu sync.Mutex
sharedAccessLogGeoInstance pkggeoip.Service
)
func sharedAccessLogGeoService(ctx context.Context) pkggeoip.Service {
sharedAccessLogGeoMu.Lock()
defer sharedAccessLogGeoMu.Unlock()
if sharedAccessLogGeoInstance == nil {
service, err := pkggeoip.NewMaxMindGeoIPServiceWithContext(ctx, "", "")
if err != nil {
slog.WarnContext(ctx, "initialize access log geo service failed", "error", err)
return nil
}
sharedAccessLogGeoInstance = service
}
return sharedAccessLogGeoInstance
}
// resolveAccessLogRegion resolves the region name for an access-log remote address.
// mmdb Lookup 本身是内存映射 trie 查找(微秒级),无需再建应用层 IP 缓存。
// resolveAccessLogRegion resolves the region name for an access-log remote address.
// mmdb Lookup 本身是内存映射 trie 查找(微秒级),无需再建应用层 IP 缓存。
func resolveAccessLogRegion(ctx context.Context, rawIP string) string {
normalizedIP := normalizeAccessLogIP(rawIP)
if normalizedIP == "" {
return ""
}
service := sharedAccessLogGeoService(ctx)
if service == nil {
return ""
}
info, err := service.GetGeoInfo(net.ParseIP(normalizedIP))
if err != nil || info == nil {
return ""
}
region := strings.TrimSpace(info.Name)
if region == "" {
region = strings.TrimSpace(info.ISOCode)
}
return region
}
func normalizeAccessLogIP(raw string) string {
trimmed := strings.TrimSpace(raw)
if trimmed == "" {
return ""
}
if ip := net.ParseIP(trimmed); ip != nil {
return ip.String()
}
trimmed = strings.TrimPrefix(trimmed, "[")
trimmed = strings.TrimSuffix(trimmed, "]")
if ip := net.ParseIP(trimmed); ip != nil {
return ip.String()
}
host, _, err := net.SplitHostPort(strings.TrimSpace(raw))
if err != nil {
return ""
}
host = strings.TrimPrefix(host, "[")
host = strings.TrimSuffix(host, "]")
if ip := net.ParseIP(host); ip != nil {
return ip.String()
}
return ""
}