syntax = "proto3";
package rocksdpb;

message CmdGetRequest {
    bytes key     = 1;
}

message CmdGetResponse {
    bytes value   = 1;
    string error  = 2;
}

message CmdSetRequest {
    bytes key     = 1;
    bytes value   = 2;
    uint64 expire = 3;
    oneof body {
        bool notExists = 4;
        bytes compare = 5;
    }
}

message CmdSetResponse {
    bool result   = 1;
    string error  = 2;
}

message CmdPingRequest {
    string message   = 1;
}

message CmdPingResponse {
    string message   = 1;
}

enum MessageType {
    CmdQuit            = 0;
    CmdGet             = 2;
    CmdSet             = 3;

    // system commands
    CmdPing            = 256;
}


message Request {
    MessageType             type                  = 1;
    oneof body {
      CmdGetRequest           cmd_get_req           = 2;
      CmdSetRequest           cmd_set_req           = 3;

      CmdPingRequest          cmd_ping_req          = 256;
    }
}

message Response {
    MessageType             type                  = 1;
    oneof body {
      CmdGetResponse          cmd_get_res           = 2;
      CmdSetResponse          cmd_set_res           = 3;

      CmdPingResponse         cmd_ping_res          = 256;
    }
}