/**
 * 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.
 */
syntax = "proto2";
option java_package = "org.apache.hadoop.hdfs.protocol.proto";
option java_outer_classname = "AliasMapProtocolProtos";
option java_generic_services = true;
option java_generate_equals_and_hash = true;
package hadoop.hdfs;

import "hdfs.proto";

message KeyValueProto {
  optional BlockProto key = 1;
  optional ProvidedStorageLocationProto value = 2;
}

message WriteRequestProto {
  required KeyValueProto keyValuePair = 1;
}

message WriteResponseProto {
}

message ReadRequestProto {
  required BlockProto key = 1;
}

message ReadResponseProto {
  optional ProvidedStorageLocationProto value = 1;
}

message ListRequestProto {
  optional BlockProto marker = 1;
}

message ListResponseProto {
  repeated KeyValueProto fileRegions = 1;
  optional BlockProto nextMarker = 2;
}

message BlockPoolRequestProto {
}

message BlockPoolResponseProto {
  required string blockPoolId = 1;
}

service AliasMapProtocolService {
  rpc write(WriteRequestProto) returns(WriteResponseProto);
  rpc read(ReadRequestProto) returns(ReadResponseProto);
  rpc list(ListRequestProto) returns(ListResponseProto);
  rpc getBlockPoolId(BlockPoolRequestProto) returns(BlockPoolResponseProto);
}