// SPDX-License-Identifier: ISC
//
// mgmt.proto
//
// @copyright Copyright (C) 2021  Vmware, Inc.
//
// @author Pushpasis Sarkar <spushpasis@vmware.com>
//

syntax = "proto2";

//
// Protobuf definitions pertaining to the MGMTD component.
//

package mgmtd;

//
// Common Sub-Messages
//

message YangDataXPath {
  required string xpath = 1;
}

message YangDataValue {
  oneof value {
    //
    // NOTE: For now let's use stringized value ONLY.
    // We will enhance it later to pass native-format
    // if needed.
    //
    // bool bool_val = 2;
    // double double_val = 3;
    // float float_val = 4;
    // string string_val = 5;
    // bytes bytes_val = 6;
    // int32 int32_val = 7;
    // int64 int64_val = 8;
    // uint32 uint32_val = 9;
    // uint64 uint64_val = 10;
    // int32 int8_val = 11;
    // uint32 uint8_val = 12;
    // int32 int16_val = 13;
    // uint32 uint16_val = 14;
    string encoded_str_val = 100;
  }
}

message YangData {
  required string xpath = 1;
  optional YangDataValue value = 2;
}

enum CfgDataReqType {
  REQ_TYPE_NONE = 0;
  SET_DATA = 1;
  DELETE_DATA = 2;
  CREATE_DATA = 3;
}

message YangCfgDataReq {
  required YangData data = 1;
  required CfgDataReqType req_type = 2;
}

message YangGetDataReq {
  required YangData data = 1;
  required int64 next_indx = 2;
}

//
// Backend Interface Messages
//
message BeSubscribeReq {
  required string client_name = 1;
  required bool subscribe_xpaths = 2;
  repeated string xpath_reg = 3;
}

message BeSubscribeReply {
  required bool success = 1;
}

message BeTxnReq {
  required uint64 txn_id = 1;
  required bool create = 2;
}

message BeTxnReply {
  required uint64 txn_id = 1;
  required bool create = 2;
  required bool success = 3;
}

message BeCfgDataCreateReq {
  required uint64 txn_id = 1;
  repeated YangCfgDataReq data_req = 2;
  required bool end_of_data = 3;
}

message BeCfgDataCreateReply {
  required uint64 txn_id = 1;
  required bool success = 2;
  optional string error_if_any = 3;
}

message BeCfgDataApplyReq {
  required uint64 txn_id = 1;
}

message BeCfgDataApplyReply {
  required uint64 txn_id = 1;
  required bool success = 2;
  optional string error_if_any = 3;
}

message YangDataReply {
  repeated YangData data = 1;
  required int64 next_indx = 2;
}

//
// Any message on the MGMTD Backend Interface.
//
message BeMessage {
  oneof message {
    BeSubscribeReq subscr_req = 2;
    BeSubscribeReply subscr_reply = 3;
    BeTxnReq txn_req = 4;
    BeTxnReply txn_reply = 5;
    BeCfgDataCreateReq cfg_data_req = 6;
    BeCfgDataCreateReply cfg_data_reply = 7;
    BeCfgDataApplyReq cfg_apply_req = 8;
    BeCfgDataApplyReply cfg_apply_reply = 9;
  }
}


//
// Frontend Interface Messages
//

message FeRegisterReq {
  required string client_name = 1;
}

message FeSessionReq {
  required bool create = 1;
  oneof id {
    uint64 client_conn_id = 2; // Applicable for create request only
    uint64 session_id = 3; // Applicable for delete request only
  }
}

message FeSessionReply {
  required bool create = 1;
  required bool success = 2;
  optional uint64 client_conn_id = 3; // Applicable for create request only
  required uint64 session_id = 4;
}

enum DatastoreId {
  DS_NONE = 0;
  RUNNING_DS = 1;
  CANDIDATE_DS = 2;
  OPERATIONAL_DS = 3;
  STARTUP_DS = 4;
}

message FeLockDsReq {
  required uint64 session_id = 1;
  required uint64 req_id = 2;
  required DatastoreId ds_id = 3;
  required bool lock = 4;
}

message FeLockDsReply {
  required uint64 session_id = 1;
  required uint64 req_id = 2;
  required DatastoreId ds_id = 3;
  required bool lock = 4;
  required bool success = 5;
  optional string error_if_any = 6;
}

message FeSetConfigReq {
  required uint64 session_id = 1;
  required DatastoreId ds_id = 2;
  required uint64 req_id = 3;
  repeated YangCfgDataReq data = 4;
  required bool implicit_commit = 5;
  required DatastoreId commit_ds_id = 6;
}

message FeSetConfigReply {
  required uint64 session_id = 1;
  required DatastoreId ds_id = 2;
  required uint64 req_id = 3;
  required bool success = 4;
  required bool implicit_commit = 5;
  optional string error_if_any = 6;
}

message FeCommitConfigReq {
  required uint64 session_id = 1;
  required DatastoreId src_ds_id = 2;
  required DatastoreId dst_ds_id = 3;
  required uint64 req_id = 4;
  required bool validate_only = 5;
  required bool abort = 6;
}

message FeCommitConfigReply {
  required uint64 session_id = 1;
  required DatastoreId src_ds_id = 2;
  required DatastoreId dst_ds_id = 3;
  required uint64 req_id = 4;
  required bool validate_only = 5;
  required bool success = 6;
  required bool abort = 7;
  optional string error_if_any = 8;
}

message FeGetReq {
  required uint64 session_id = 1;
  required bool config = 2;
  required DatastoreId ds_id = 3;
  required uint64 req_id = 4;
  repeated YangGetDataReq data = 5;
}

message FeGetReply {
  required uint64 session_id = 1;
  required bool config = 2;
  required DatastoreId ds_id = 3;
  required uint64 req_id = 4;
  required bool success = 5;
  optional string error_if_any = 6;
  optional YangDataReply data = 7;
}

message FeNotifyDataReq {
  repeated YangData data = 1;
}

message FeRegisterNotifyReq {
  required uint64 session_id = 1;
  required DatastoreId ds_id = 2;
  required bool register_req = 3;
  required uint64 req_id = 4;
  repeated YangDataXPath data_xpath = 5;
}

message FeMessage {
  oneof message {
    FeRegisterReq register_req = 2;
    FeSessionReq session_req = 3;
    FeSessionReply session_reply = 4;
    FeLockDsReq lockds_req = 5;
    FeLockDsReply lockds_reply = 6;
    FeSetConfigReq setcfg_req = 7;
    FeSetConfigReply setcfg_reply = 8;
    FeCommitConfigReq commcfg_req = 9;
    FeCommitConfigReply commcfg_reply = 10;
    FeGetReq get_req = 11;
    FeGetReply get_reply = 12;
    FeNotifyDataReq notify_data_req = 15;
    FeRegisterNotifyReq regnotify_req = 16;
  }
}