fix: 完善多云同步验证与实例统计

- 修复华为云签名、账单字段与区域映射缓存
- 按真实云实例更新账号服务器数并补充并发测试

backend/cloud/huawei.go

@@ -8,15 +8,20 @@ import (
 	"net/http"
 	"sort"
 	"strings"
+	"sync"
 	"time"
 )
 
 // HuaweiProvider 通过华为云 AK/SK 签名 API 同步项目区域与 ECS 实例。 // Logan.Li
-type HuaweiProvider struct{ accessKey, secretKey string }
+type HuaweiProvider struct {
+	accessKey, secretKey string
+	regionMu             sync.RWMutex
+	regionByProject      map[string]string
+}
 
 // NewHuaweiProvider 创建华为云 Provider。 // Logan.Li
 func NewHuaweiProvider(accessKey, secretKey string) *HuaweiProvider {
-	return &HuaweiProvider{accessKey, secretKey}
+	return &HuaweiProvider{accessKey: accessKey, secretKey: secretKey, regionByProject: make(map[string]string)}
 }
 
 // Name 返回华为云厂商标识。 // Logan.Li
@@ -32,7 +37,11 @@ func (p *HuaweiProvider) signedGet(rawURL, _ string) ([]byte, error) {
 	host := u.URL.Host
 	canonicalHeaders := "host:" + host + "\n" + "x-sdk-date:" + now + "\n"
 	signedHeaders := "host;x-sdk-date"
-	canonicalRequest := "GET\n" + u.URL.EscapedPath() + "\n" + u.URL.Query().Encode() + "\n" + canonicalHeaders + "\n" + signedHeaders + "\n" + sha256Hex("")
+	canonicalURI := u.URL.EscapedPath()
+	if !strings.HasSuffix(canonicalURI, "/") {
+		canonicalURI += "/"
+	}
+	canonicalRequest := "GET\n" + canonicalURI + "\n" + u.URL.Query().Encode() + "\n" + canonicalHeaders + "\n" + signedHeaders + "\n" + sha256Hex("")
 	stringToSign := "SDK-HMAC-SHA256\n" + now + "\n" + sha256Hex(canonicalRequest)
 	signature := hex.EncodeToString(hmacSHA256([]byte(p.secretKey), stringToSign))
 	u.Header.Set("X-Sdk-Date", now)
@@ -68,28 +77,33 @@ func (p *HuaweiProvider) ListRegions() ([]CloudRegion, error) {
 		return nil, fmt.Errorf("解析华为云区域响应失败: %w", err)
 	}
 	regions := []CloudRegion{}
+	regionByProject := make(map[string]string, len(result.Projects))
 	for _, project := range result.Projects {
 		if project.ID == "" || project.Name == "" {
 			continue
 		}
 		regions = append(regions, CloudRegion{RegionID: project.ID, LocalName: project.Name, Endpoint: "https://ecs." + project.Name + ".myhuaweicloud.com", Status: "active"})
+		regionByProject[project.ID] = project.Name
 	}
+	p.regionMu.Lock()
+	p.regionByProject = regionByProject
+	p.regionMu.Unlock()
 	sort.Slice(regions, func(i, j int) bool { return regions[i].LocalName < regions[j].LocalName })
 	return regions, nil
 }
 
 // ListInstances 获取指定华为云项目中的 ECS 实例。 // Logan.Li
 func (p *HuaweiProvider) ListInstances(projectID string) ([]CloudInstance, error) {
-	regions, err := p.ListRegions()
-	if err != nil {
-		return nil, err
-	}
-	regionName := ""
-	for _, region := range regions {
-		if region.RegionID == projectID {
-			regionName = region.LocalName
-			break
+	p.regionMu.RLock()
+	regionName := p.regionByProject[projectID]
+	p.regionMu.RUnlock()
+	if regionName == "" {
+		if _, err := p.ListRegions(); err != nil {
+			return nil, err
 		}
+		p.regionMu.RLock()
+		regionName = p.regionByProject[projectID]
+		p.regionMu.RUnlock()
 	}
 	if regionName == "" {
 		return nil, fmt.Errorf("未找到华为云项目 %s", projectID)