/*
    消息存储服务器的子服务注册信息： /service/message_storage/instance_id
        服务名称：/service/message_storage
        实例ID: instance_id     每个能够提供用户操作服务的子服务器唯一ID
    当服务发现的时候，通过 /service/message_storage 进行服务发现，就可以发现所有的能够提供用户操作的实例信息了
*/
syntax = "proto3";
package bite_im;
import "base.proto";

option cc_generic_services = true;

message GetHistoryMsgReq {
    string request_id = 1;
    string chat_session_id = 2;
    int64 start_time = 3;
    int64 over_time = 4;
    optional string user_id = 5;
    optional string session_id = 6;
}
message GetHistoryMsgRsp {
    string request_id = 1;
    bool success = 2;
    string errmsg = 3; 
    repeated MessageInfo msg_list = 4;
}

message GetRecentMsgReq {
    string request_id = 1;
    string chat_session_id = 2;
    int64 msg_count = 3;
    optional int64 cur_time = 4;//用于扩展获取指定时间前的n条消息
    optional string user_id = 5;
    optional string session_id = 6;
}
message GetRecentMsgRsp {
    string request_id = 1;
    bool success = 2;
    string errmsg = 3; 
    repeated MessageInfo msg_list = 4;
}

message MsgSearchReq {
    string request_id = 1;
    optional string user_id = 2;
    optional string session_id = 3;
    string chat_session_id = 4;
    string search_key = 5;
}
message MsgSearchRsp {
    string request_id = 1;
    bool success = 2;
    string errmsg = 3; 
    repeated MessageInfo msg_list = 4;
}

service MsgStorageService {
    rpc GetHistoryMsg(GetHistoryMsgReq) returns (GetHistoryMsgRsp);
    rpc GetRecentMsg(GetRecentMsgReq) returns (GetRecentMsgRsp);
    rpc MsgSearch(MsgSearchReq) returns (MsgSearchRsp);
    
}