/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

/**
 * These .proto interfaces are private and unstable.
 * Please see http://wiki.apache.org/hadoop/Compatibility
 * for what changes are allowed for a *unstable* .proto interface.
 */
syntax = "proto2";
option java_package = "org.apache.hadoop.hdds.protocol.scm.proto";
option java_outer_classname = "InterSCMProtocolProtos";
option java_generate_equals_and_hash = true;


message CopyDBCheckpointRequestProto {
  required bool flush = 1;
}

message CopyDBCheckpointResponseProto {
  required string clusterId = 1;
  required uint64 len = 2;
  required bool eof = 3;
  required bytes data = 4;
  required uint64 readOffset = 6;
  optional int64 checksum = 7;
}

service InterSCMProtocolService {
  // An inter SCM service to copy SCM DB checkpoint from leader to follower
  rpc download (CopyDBCheckpointRequestProto) returns (stream CopyDBCheckpointResponseProto);
}