refactor: Refactor rpc call && auto gen rpc_call code (#2969)

* refactor: rpcclient

* chore: err

* fix: err

* fix: err

* fix: err

* feat: change api

pkg/rpcclient/init.go

@@ -0,0 +1,60 @@
+package rpcclient
+
+import (
+	"context"
+
+	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
+	pbauth "github.com/openimsdk/protocol/auth"
+	pbconversation "github.com/openimsdk/protocol/conversation"
+	pbgroup "github.com/openimsdk/protocol/group"
+	pbmsg "github.com/openimsdk/protocol/msg"
+	pbmsggateway "github.com/openimsdk/protocol/msggateway"
+	pbpush "github.com/openimsdk/protocol/push"
+	pbrelation "github.com/openimsdk/protocol/relation"
+	pbthird "github.com/openimsdk/protocol/third"
+	pbuser "github.com/openimsdk/protocol/user"
+	"github.com/openimsdk/tools/discovery"
+	"github.com/openimsdk/tools/system/program"
+	"google.golang.org/grpc"
+)
+
+func InitRpcCaller(discov discovery.SvcDiscoveryRegistry, service config.RpcService) error {
+	initConn := func(discov discovery.SvcDiscoveryRegistry, name string, initFunc func(conn *grpc.ClientConn)) error {
+		conn, err := discov.GetConn(context.Background(), name)
+		if err != nil {
+			program.ExitWithError(err)
+			return err
+		}
+		initFunc(conn)
+		return nil
+	}
+	if err := initConn(discov, service.Auth, pbauth.InitAuth); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.Conversation, pbconversation.InitConversation); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.Group, pbgroup.InitGroup); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.Msg, pbmsg.InitMsg); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.MessageGateway, pbmsggateway.InitMsgGateway); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.Push, pbpush.InitPushMsgService); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.Friend, pbrelation.InitFriend); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.Third, pbthird.InitThird); err != nil {
+		return err
+	}
+	if err := initConn(discov, service.User, pbuser.InitUser); err != nil {
+		return err
+	}
+
+	return nil
+}