Initial commit (code only without large binaries)

EdgeUser/internal/rpc/rpc_client.go

@@ -0,0 +1,633 @@
+package rpc
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/dao"
+	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
+	"github.com/TeaOSLab/EdgeUser/internal/configs"
+	teaconst "github.com/TeaOSLab/EdgeUser/internal/const"
+	"github.com/TeaOSLab/EdgeUser/internal/encrypt"
+	"github.com/TeaOSLab/EdgeUser/internal/utils"
+	"github.com/iwind/TeaGo/maps"
+	"github.com/iwind/TeaGo/rands"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/encoding/gzip"
+	"google.golang.org/grpc/keepalive"
+	"google.golang.org/grpc/metadata"
+	"net/url"
+	"sync"
+	"time"
+)
+
+// RPCClient RPC客户端
+type RPCClient struct {
+	apiConfig *configs.APIConfig
+	conns     []*grpc.ClientConn
+
+	locker sync.Mutex
+}
+
+// NewRPCClient 构造新的RPC客户端
+func NewRPCClient(apiConfig *configs.APIConfig) (*RPCClient, error) {
+	if apiConfig == nil {
+		return nil, errors.New("api config should not be nil")
+	}
+
+	client := &RPCClient{
+		apiConfig: apiConfig,
+	}
+
+	err := client.init()
+	if err != nil {
+		return nil, err
+	}
+
+	// 设置DAO的RPC
+	dao.SetRPC(client)
+
+	return client, nil
+}
+
+func (this *RPCClient) SysSettingRPC() pb.SysSettingServiceClient {
+	return pb.NewSysSettingServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) SysLockerRPC() pb.SysLockerServiceClient {
+	return pb.NewSysLockerServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NodeRPC() pb.NodeServiceClient {
+	return pb.NewNodeServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NodeClusterRPC() pb.NodeClusterServiceClient {
+	return pb.NewNodeClusterServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NodeRegionRPC() pb.NodeRegionServiceClient {
+	return pb.NewNodeRegionServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NodePriceItemRPC() pb.NodePriceItemServiceClient {
+	return pb.NewNodePriceItemServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NodeLogRPC() pb.NodeLogServiceClient {
+	return pb.NewNodeLogServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NodeValueRPC() pb.NodeValueServiceClient {
+	return pb.NewNodeValueServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerRPC() pb.ServerServiceClient {
+	return pb.NewServerServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerClientSystemMonthlyStatRPC() pb.ServerClientSystemMonthlyStatServiceClient {
+	return pb.NewServerClientSystemMonthlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerClientBrowserMonthlyStatRPC() pb.ServerClientBrowserMonthlyStatServiceClient {
+	return pb.NewServerClientBrowserMonthlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerRegionCountryMonthlyStatRPC() pb.ServerRegionCountryMonthlyStatServiceClient {
+	return pb.NewServerRegionCountryMonthlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerRegionProvinceMonthlyStatRPC() pb.ServerRegionProvinceMonthlyStatServiceClient {
+	return pb.NewServerRegionProvinceMonthlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerRegionCityMonthlyStatRPC() pb.ServerRegionCityMonthlyStatServiceClient {
+	return pb.NewServerRegionCityMonthlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerRegionProviderMonthlyStatRPC() pb.ServerRegionProviderMonthlyStatServiceClient {
+	return pb.NewServerRegionProviderMonthlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerHTTPFirewallDailyStatRPC() pb.ServerHTTPFirewallDailyStatServiceClient {
+	return pb.NewServerHTTPFirewallDailyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerGroupRPC() pb.ServerGroupServiceClient {
+	return pb.NewServerGroupServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerDailyRPC() pb.ServerDailyStatServiceClient {
+	return pb.NewServerDailyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) OriginRPC() pb.OriginServiceClient {
+	return pb.NewOriginServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPWebRPC() pb.HTTPWebServiceClient {
+	return pb.NewHTTPWebServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPAuthPolicyRPC() pb.HTTPAuthPolicyServiceClient {
+	return pb.NewHTTPAuthPolicyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ReverseProxyRPC() pb.ReverseProxyServiceClient {
+	return pb.NewReverseProxyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPGzipRPC() pb.HTTPGzipServiceClient {
+	return pb.NewHTTPGzipServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPHeaderRPC() pb.HTTPHeaderServiceClient {
+	return pb.NewHTTPHeaderServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPHeaderPolicyRPC() pb.HTTPHeaderPolicyServiceClient {
+	return pb.NewHTTPHeaderPolicyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPPageRPC() pb.HTTPPageServiceClient {
+	return pb.NewHTTPPageServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPAccessLogPolicyRPC() pb.HTTPAccessLogPolicyServiceClient {
+	return pb.NewHTTPAccessLogPolicyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPCachePolicyRPC() pb.HTTPCachePolicyServiceClient {
+	return pb.NewHTTPCachePolicyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPCacheTaskRPC() pb.HTTPCacheTaskServiceClient {
+	return pb.NewHTTPCacheTaskServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPCacheTaskKeyRPC() pb.HTTPCacheTaskKeyServiceClient {
+	return pb.NewHTTPCacheTaskKeyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPFirewallPolicyRPC() pb.HTTPFirewallPolicyServiceClient {
+	return pb.NewHTTPFirewallPolicyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPFirewallRuleGroupRPC() pb.HTTPFirewallRuleGroupServiceClient {
+	return pb.NewHTTPFirewallRuleGroupServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPFirewallRuleSetRPC() pb.HTTPFirewallRuleSetServiceClient {
+	return pb.NewHTTPFirewallRuleSetServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPLocationRPC() pb.HTTPLocationServiceClient {
+	return pb.NewHTTPLocationServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPWebsocketRPC() pb.HTTPWebsocketServiceClient {
+	return pb.NewHTTPWebsocketServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) HTTPRewriteRuleRPC() pb.HTTPRewriteRuleServiceClient {
+	return pb.NewHTTPRewriteRuleServiceClient(this.pickConn())
+}
+
+// HTTPAccessLogRPC 访问日志
+func (this *RPCClient) HTTPAccessLogRPC() pb.HTTPAccessLogServiceClient {
+	return pb.NewHTTPAccessLogServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) SSLCertRPC() pb.SSLCertServiceClient {
+	return pb.NewSSLCertServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) SSLPolicyRPC() pb.SSLPolicyServiceClient {
+	return pb.NewSSLPolicyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) MessageRPC() pb.MessageServiceClient {
+	return pb.NewMessageServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) IPListRPC() pb.IPListServiceClient {
+	return pb.NewIPListServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) IPItemRPC() pb.IPItemServiceClient {
+	return pb.NewIPItemServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) FileRPC() pb.FileServiceClient {
+	return pb.NewFileServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) FileChunkRPC() pb.FileChunkServiceClient {
+	return pb.NewFileChunkServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) RegionCountryRPC() pb.RegionCountryServiceClient {
+	return pb.NewRegionCountryServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) RegionProvinceRPC() pb.RegionProvinceServiceClient {
+	return pb.NewRegionProvinceServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) RegionCityRPC() pb.RegionCityServiceClient {
+	return pb.NewRegionCityServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) RegionProviderRPC() pb.RegionProviderServiceClient {
+	return pb.NewRegionProviderServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) LogRPC() pb.LogServiceClient {
+	return pb.NewLogServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) DNSProviderRPC() pb.DNSProviderServiceClient {
+	return pb.NewDNSProviderServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) DNSDomainRPC() pb.DNSDomainServiceClient {
+	return pb.NewDNSDomainServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) DNSRPC() pb.DNSServiceClient {
+	return pb.NewDNSServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSClusterRPC() pb.NSClusterServiceClient {
+	return pb.NewNSClusterServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ACMEUserRPC() pb.ACMEUserServiceClient {
+	return pb.NewACMEUserServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ACMETaskRPC() pb.ACMETaskServiceClient {
+	return pb.NewACMETaskServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ACMEProviderRPC() pb.ACMEProviderServiceClient {
+	return pb.NewACMEProviderServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ACMEProviderAccountRPC() pb.ACMEProviderAccountServiceClient {
+	return pb.NewACMEProviderAccountServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserRPC() pb.UserServiceClient {
+	return pb.NewUserServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserBillRPC() pb.UserBillServiceClient {
+	return pb.NewUserBillServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserIdentityRPC() pb.UserIdentityServiceClient {
+	return pb.NewUserIdentityServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerBillRPC() pb.ServerBillServiceClient {
+	return pb.NewServerBillServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserTrafficBillRPC() pb.UserTrafficBillServiceClient {
+	return pb.NewUserTrafficBillServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserNodeRPC() pb.UserNodeServiceClient {
+	return pb.NewUserNodeServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) APINodeRPC() pb.APINodeServiceClient {
+	return pb.NewAPINodeServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserAccessKeyRPC() pb.UserAccessKeyServiceClient {
+	return pb.NewUserAccessKeyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) IPLibraryRPC() pb.IPLibraryServiceClient {
+	return pb.NewIPLibraryServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) PlanRPC() pb.PlanServiceClient {
+	return pb.NewPlanServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserPlanRPC() pb.UserPlanServiceClient {
+	return pb.NewUserPlanServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserAccountRPC() pb.UserAccountServiceClient {
+	return pb.NewUserAccountServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserAccountLogRPC() pb.UserAccountLogServiceClient {
+	return pb.NewUserAccountLogServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserOrderRPC() pb.UserOrderServiceClient {
+	return pb.NewUserOrderServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserEmailVerificationRPC() pb.UserEmailVerificationServiceClient {
+	return pb.NewUserEmailVerificationServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserMobileVerificationRPC() pb.UserMobileVerificationServiceClient {
+	return pb.NewUserMobileVerificationServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserVerifyCodeRPC() pb.UserVerifyCodeServiceClient {
+	return pb.NewUserVerifyCodeServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) OrderMethodRPC() pb.OrderMethodServiceClient {
+	return pb.NewOrderMethodServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserTicketRPC() pb.UserTicketServiceClient {
+	return pb.NewUserTicketServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserTicketLogRPC() pb.UserTicketLogServiceClient {
+	return pb.NewUserTicketLogServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserTicketCategoryRPC() pb.UserTicketCategoryServiceClient {
+	return pb.NewUserTicketCategoryServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) LoginRPC() pb.LoginServiceClient {
+	return pb.NewLoginServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSDomainRPC() pb.NSDomainServiceClient {
+	return pb.NewNSDomainServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSDomainGroupRPC() pb.NSDomainGroupServiceClient {
+	return pb.NewNSDomainGroupServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSRecordRPC() pb.NSRecordServiceClient {
+	return pb.NewNSRecordServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSKeyRPC() pb.NSKeyServiceClient {
+	return pb.NewNSKeyServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSRouteRPC() pb.NSRouteServiceClient {
+	return pb.NewNSRouteServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSAccessLogRPC() pb.NSAccessLogServiceClient {
+	return pb.NewNSAccessLogServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSRPC() pb.NSServiceClient {
+	return pb.NewNSServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSQuestionOptionRPC() pb.NSQuestionOptionServiceClient {
+	return pb.NewNSQuestionOptionServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSNodeRPC() pb.NSNodeServiceClient {
+	return pb.NewNSNodeServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSRecordHourlyStatRPC() pb.NSRecordHourlyStatServiceClient {
+	return pb.NewNSRecordHourlyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSUserPlanRPC() pb.NSUserPlanServiceClient {
+	return pb.NewNSUserPlanServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) NSPlanRPC() pb.NSPlanServiceClient {
+	return pb.NewNSPlanServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerBandwidthStatRPC() pb.ServerBandwidthStatServiceClient {
+	return pb.NewServerBandwidthStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ServerDailyStatRPC() pb.ServerDailyStatServiceClient {
+	return pb.NewServerDailyStatServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) PriceRPC() pb.PriceServiceClient {
+	return pb.NewPriceServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) TrafficPackageRPC() pb.TrafficPackageServiceClient {
+	return pb.NewTrafficPackageServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) TrafficPackagePeriodRPC() pb.TrafficPackagePeriodServiceClient {
+	return pb.NewTrafficPackagePeriodServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) TrafficPackagePriceRPC() pb.TrafficPackagePriceServiceClient {
+	return pb.NewTrafficPackagePriceServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserTrafficPackageRPC() pb.UserTrafficPackageServiceClient {
+	return pb.NewUserTrafficPackageServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ClientAgentRPC() pb.ClientAgentServiceClient {
+	return pb.NewClientAgentServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ADPackageRPC() pb.ADPackageServiceClient {
+	return pb.NewADPackageServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ADPackageInstanceRPC() pb.ADPackageInstanceServiceClient {
+	return pb.NewADPackageInstanceServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ADPackagePeriodRPC() pb.ADPackagePeriodServiceClient {
+	return pb.NewADPackagePeriodServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ADPackagePriceRPC() pb.ADPackagePriceServiceClient {
+	return pb.NewADPackagePriceServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) ADNetworkRPC() pb.ADNetworkServiceClient {
+	return pb.NewADNetworkServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserADInstanceRPC() pb.UserADInstanceServiceClient {
+	return pb.NewUserADInstanceServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) UserScriptRPC() pb.UserScriptServiceClient {
+	return pb.NewUserScriptServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) PostRPC() pb.PostServiceClient {
+	return pb.NewPostServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) LoginSessionRPC() pb.LoginSessionServiceClient {
+	return pb.NewLoginSessionServiceClient(this.pickConn())
+}
+
+func (this *RPCClient) LoginTicketRPC() pb.LoginTicketServiceClient {
+	return pb.NewLoginTicketServiceClient(this.pickConn())
+}
+
+// Context 构造用户上下文
+func (this *RPCClient) Context(userId int64) context.Context {
+	ctx := context.Background()
+	m := maps.Map{
+		"timestamp": time.Now().Unix(),
+		"type":      "user",
+		"userId":    userId,
+	}
+	method, err := encrypt.NewMethodInstance(teaconst.EncryptMethod, this.apiConfig.Secret, this.apiConfig.NodeId)
+	if err != nil {
+		utils.PrintError(err)
+		return context.Background()
+	}
+	data, err := method.Encrypt(m.AsJSON())
+	if err != nil {
+		utils.PrintError(err)
+		return context.Background()
+	}
+	token := base64.StdEncoding.EncodeToString(data)
+	ctx = metadata.AppendToOutgoingContext(ctx, "nodeId", this.apiConfig.NodeId, "token", token)
+	return ctx
+}
+
+// APIContext 构造API上下文
+func (this *RPCClient) APIContext(apiNodeId int64) context.Context {
+	ctx := context.Background()
+	m := maps.Map{
+		"timestamp": time.Now().Unix(),
+		"type":      "api",
+		"userId":    apiNodeId,
+	}
+	method, err := encrypt.NewMethodInstance(teaconst.EncryptMethod, this.apiConfig.Secret, this.apiConfig.NodeId)
+	if err != nil {
+		utils.PrintError(err)
+		return context.Background()
+	}
+	data, err := method.Encrypt(m.AsJSON())
+	if err != nil {
+		utils.PrintError(err)
+		return context.Background()
+	}
+	token := base64.StdEncoding.EncodeToString(data)
+	ctx = metadata.AppendToOutgoingContext(ctx, "nodeId", this.apiConfig.NodeId, "token", token)
+	return ctx
+}
+
+// UpdateConfig 修改配置
+func (this *RPCClient) UpdateConfig(config *configs.APIConfig) error {
+	this.apiConfig = config
+
+	this.locker.Lock()
+	err := this.init()
+	this.locker.Unlock()
+	return err
+}
+
+// 初始化
+func (this *RPCClient) init() error {
+	// 重新连接
+	var conns = []*grpc.ClientConn{}
+	for _, endpoint := range this.apiConfig.RPCEndpoints {
+		u, err := url.Parse(endpoint)
+		if err != nil {
+			return fmt.Errorf("parse endpoint failed: %w", err)
+		}
+		var conn *grpc.ClientConn
+		var callOptions = grpc.WithDefaultCallOptions(
+			grpc.MaxCallRecvMsgSize(128<<20),
+			grpc.MaxCallSendMsgSize(128<<20),
+			grpc.UseCompressor(gzip.Name),
+		)
+		var keepaliveParams = grpc.WithKeepaliveParams(keepalive.ClientParameters{
+			Time: 30 * time.Second,
+		})
+		if u.Scheme == "http" {
+			conn, err = grpc.Dial(u.Host, grpc.WithTransportCredentials(insecure.NewCredentials()), callOptions, keepaliveParams)
+		} else if u.Scheme == "https" {
+			conn, err = grpc.Dial(u.Host, grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{
+				InsecureSkipVerify: true,
+			})), callOptions, keepaliveParams)
+		} else {
+			return errors.New("parse endpoint failed: invalid scheme '" + u.Scheme + "'")
+		}
+		if err != nil {
+			return err
+		}
+		conns = append(conns, conn)
+	}
+	if len(conns) == 0 {
+		return errors.New("[RPC]no available endpoints")
+	}
+
+	// 这里不需要加锁，因为会和pickConn冲突
+	this.conns = conns
+	return nil
+}
+
+// 随机选择一个连接
+func (this *RPCClient) pickConn() *grpc.ClientConn {
+	this.locker.Lock()
+	defer this.locker.Unlock()
+
+	// 检查连接状态
+	var countConns = len(this.conns)
+	if countConns > 0 {
+		if countConns == 1 {
+			return this.conns[0]
+		}
+		for _, state := range []connectivity.State{
+			connectivity.Ready,
+			connectivity.Idle,
+			connectivity.Connecting,
+			connectivity.TransientFailure,
+		} {
+			var availableConns = []*grpc.ClientConn{}
+			for _, conn := range this.conns {
+				if conn.GetState() == state {
+					availableConns = append(availableConns, conn)
+				}
+			}
+			if len(availableConns) > 0 {
+				return this.randConn(availableConns)
+			}
+		}
+	}
+
+	return this.randConn(this.conns)
+}
+
+func (this *RPCClient) randConn(conns []*grpc.ClientConn) *grpc.ClientConn {
+	var l = len(conns)
+	if l == 0 {
+		return nil
+	}
+	if l == 1 {
+		return conns[0]
+	}
+	return conns[rands.Int(0, l-1)]
+}

EdgeUser/internal/rpc/rpc_client_test.go

@@ -0,0 +1,5 @@
+package rpc
+
+import (
+	_ "github.com/iwind/TeaGo/bootstrap"
+)

EdgeUser/internal/rpc/rpc_utils.go

@@ -0,0 +1,54 @@
+package rpc
+
+import (
+	"github.com/TeaOSLab/EdgeUser/internal/configs"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"strings"
+	"sync"
+)
+
+var sharedRPC *RPCClient = nil
+var locker = &sync.Mutex{}
+
+// SharedRPC 获取GRPC客户端
+func SharedRPC() (*RPCClient, error) {
+	locker.Lock()
+	defer locker.Unlock()
+
+	if sharedRPC != nil {
+		return sharedRPC, nil
+	}
+
+	config, err := configs.LoadAPIConfig()
+	if err != nil {
+		return nil, err
+	}
+	client, err := NewRPCClient(config)
+	if err != nil {
+		return nil, err
+	}
+
+	sharedRPC = client
+	return sharedRPC, nil
+}
+
+// IsConnError 是否为连接错误
+func IsConnError(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	// 检查是否为连接错误
+	statusErr, ok := status.FromError(err)
+	if ok {
+		var errorCode = statusErr.Code()
+		return errorCode == codes.Unavailable || errorCode == codes.Canceled
+	}
+
+	if strings.Contains(err.Error(), "code = Canceled") {
+		return true
+	}
+
+	return false
+}