Your commit message here

pkg/common/discoveryregister/direct/directconn.go

@@ -0,0 +1,136 @@
+package direct
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"github.com/OpenIMSDK/tools/errs"
+	config2 "github.com/openimsdk/open-im-server/v3/pkg/common/config"
+	"google.golang.org/grpc"
+	"net"
+	"time"
+)
+
+type ServiceAddresses map[string]string
+
+func getServiceAddresses() ServiceAddresses {
+	return ServiceAddresses{
+		"OpenImUser":           fmt.Sprintf(config2.Config.RpcRegisterName.OpenImUserName, config2.Config.RpcPort.OpenImUserPort[0]),
+		"OpenImFriend":         fmt.Sprintf(config2.Config.RpcRegisterName.OpenImFriendName, config2.Config.RpcPort.OpenImFriendPort[0]),
+		"OpenImMessage":        fmt.Sprintf(config2.Config.RpcRegisterName.OpenImMsgName, config2.Config.RpcPort.OpenImMessagePort[0]),
+		"OpenImMessageGateway": fmt.Sprintf(config2.Config.RpcRegisterName.OpenImMessageGatewayName, config2.Config.RpcPort.OpenImMessageGatewayPort[0]),
+		"OpenImGroup":          fmt.Sprintf(config2.Config.RpcRegisterName.OpenImGroupName, config2.Config.RpcPort.OpenImGroupPort[0]),
+		"OpenImAuth":           fmt.Sprintf(config2.Config.RpcRegisterName.OpenImAuthName, config2.Config.RpcPort.OpenImAuthPort[0]),
+		"OpenImPush":           fmt.Sprintf(config2.Config.RpcRegisterName.OpenImPushName, config2.Config.RpcPort.OpenImPushPort[0]),
+		"OpenImConversation":   fmt.Sprintf(config2.Config.RpcRegisterName.OpenImConversationName, config2.Config.RpcPort.OpenImConversationPort[0]),
+		"OpenImThird":          fmt.Sprintf(config2.Config.RpcRegisterName.OpenImThirdName, config2.Config.RpcPort.OpenImThirdPort[0]),
+	}
+}
+
+type ConnManager struct {
+	additionalOpts        []grpc.DialOption
+	currentServiceAddress string
+	conns                 map[string]*grpc.ClientConn
+}
+
+func (cm *ConnManager) GetClientLocalConns() map[string][]*grpc.ClientConn {
+	return nil
+}
+
+func (cm *ConnManager) GetUserIdHashGatewayHost(ctx context.Context, userId string) (string, error) {
+	return "", nil
+}
+
+func (cm *ConnManager) Register(serviceName, host string, port int, opts ...grpc.DialOption) error {
+	return nil
+}
+
+func (cm *ConnManager) UnRegister() error {
+	return nil
+}
+
+func (cm *ConnManager) CreateRpcRootNodes(serviceNames []string) error {
+	return nil
+}
+
+func (cm *ConnManager) RegisterConf2Registry(key string, conf []byte) error {
+	return nil
+}
+
+func (cm *ConnManager) GetConfFromRegistry(key string) ([]byte, error) {
+	return nil, nil
+}
+
+func (cm *ConnManager) Close() {
+
+}
+
+func NewConnManager() (*ConnManager, error) {
+	return &ConnManager{
+		conns: make(map[string]*grpc.ClientConn),
+	}, nil
+}
+
+func (cm *ConnManager) GetConns(ctx context.Context,
+	serviceName string, opts ...grpc.DialOption) ([]*grpc.ClientConn, error) {
+	var connections []*grpc.ClientConn
+	for name, conn := range cm.conns {
+		if name == serviceName {
+			connections = append(connections, conn)
+		}
+	}
+	if len(connections) == 0 {
+		return nil, fmt.Errorf("no connections found for service: %s", serviceName)
+	}
+	return connections, nil
+}
+
+func (cm *ConnManager) GetConn(ctx context.Context, serviceName string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
+	if conn, exists := cm.conns[serviceName]; exists {
+		return conn, nil
+	}
+	addresses := getServiceAddresses()
+	address, ok := addresses[serviceName]
+	if !ok {
+		return nil, errs.Wrap(errors.New("unknown service name"), "serviceName", serviceName)
+	}
+
+	conn, err := dialService(address, opts...)
+	if err != nil {
+		return nil, err
+	}
+	cm.conns[serviceName] = conn
+	return conn, nil
+}
+
+func (cm *ConnManager) GetSelfConnTarget() string {
+	return cm.currentServiceAddress
+}
+
+func (cm *ConnManager) AddOption(opts ...grpc.DialOption) {
+	cm.additionalOpts = append(cm.additionalOpts, opts...)
+}
+
+func (cm *ConnManager) CloseConn(conn *grpc.ClientConn) {
+	if conn != nil {
+		conn.Close()
+	}
+}
+
+func dialService(address string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
+	options := append(opts, grpc.WithInsecure()) // Replace WithInsecure with proper security options
+	conn, err := grpc.DialContext(context.Background(), address, options...)
+	if err != nil {
+		return nil, err
+	}
+	return conn, nil
+}
+
+func checkServiceHealth(address string) bool {
+	conn, err := net.DialTimeout("tcp", address, time.Second*3)
+	if err != nil {
+		return false
+	}
+	conn.Close()
+	return true
+}

pkg/common/discoveryregister/discoveryregister.go

@@ -16,6 +16,7 @@ package discoveryregister
 
 import (
 	"errors"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/discoveryregister/direct"
 	"os"
 
 	"github.com/openimsdk/open-im-server/v3/pkg/common/discoveryregister/kubernetes"
@@ -36,6 +37,8 @@ func NewDiscoveryRegister(envType string) (discoveryregistry.SvcDiscoveryRegistr
 		return zookeeper.NewZookeeperDiscoveryRegister()
 	case "k8s":
 		return kubernetes.NewK8sDiscoveryRegister()
+	case "direct":
+		return direct.NewConnManager()
 	default:
 		return nil, errors.New("envType not correct")
 	}

pkg/common/discoveryregister/kubernetes/kubernetes.go

@@ -130,20 +130,40 @@ func getMsgGatewayHost(ctx context.Context) []string {
 // GetConns returns the gRPC client connections to the specified service.
 func (cli *K8sDR) GetConns(ctx context.Context, serviceName string, opts ...grpc.DialOption) ([]*grpc.ClientConn, error) {
 
+	// This conditional checks if the serviceName is not the OpenImMessageGatewayName.
+	// It seems to handle a special case for the OpenImMessageGateway.
 	if serviceName != config.Config.RpcRegisterName.OpenImMessageGatewayName {
+		// DialContext creates a client connection to the given target (serviceName) using the specified context.
+		// 'cli.options' are likely default or common options for all connections in this struct.
+		// 'opts...' allows for additional gRPC dial options to be passed and used.
 		conn, err := grpc.DialContext(ctx, serviceName, append(cli.options, opts...)...)
+
+		// The function returns a slice of client connections with the new connection, or an error if occurred.
 		return []*grpc.ClientConn{conn}, err
 	} else {
+		// This block is executed if the serviceName is OpenImMessageGatewayName.
+		// 'ret' will accumulate the connections to return.
 		var ret []*grpc.ClientConn
+
+		// getMsgGatewayHost presumably retrieves hosts for the message gateway service.
+		// The context is passed, likely for cancellation and timeout control.
 		gatewayHosts := getMsgGatewayHost(ctx)
+
+		// Iterating over the retrieved gateway hosts.
 		for _, host := range gatewayHosts {
+			// Establishes a connection to each host.
+			// Again, appending cli.options with any additional opts provided.
 			conn, err := grpc.DialContext(ctx, host, append(cli.options, opts...)...)
+
+			// If there's an error while dialing any host, the function returns immediately with the error.
 			if err != nil {
 				return nil, err
 			} else {
+				// If the connection is successful, it is added to the 'ret' slice.
 				ret = append(ret, conn)
 			}
 		}
+		// After all hosts are processed, the slice of connections is returned.
 		return ret, nil
 	}
 }