/**
 * 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.
 */

option java_package = "org.apache.hadoop.hbase.protobuf.generated";
option java_outer_classname = "AuthenticationProtos";
option java_generic_services = true;
option java_generate_equals_and_hash = true;
option optimize_for = SPEED;

message AuthenticationKey {
    required int32 id = 1;
    required int64 expiration_date = 2;
    required bytes key = 3;
}


message TokenIdentifier {
    enum Kind {
        HBASE_AUTH_TOKEN = 0;
    }
    required Kind kind = 1;
    required bytes username = 2;
    required int32 key_id = 3;
    optional int64 issue_date = 4;
    optional int64 expiration_date = 5;
    optional int64 sequence_number = 6;
}


// Serialization of the org.apache.hadoop.security.token.Token class
// Note that this is a Hadoop class, so fields may change!
message Token {
    // the TokenIdentifier in serialized form
    // Note: we can't use the protobuf directly because the Hadoop Token class
    // only stores the serialized bytes
    optional bytes identifier = 1;
    optional bytes password = 2;
    optional bytes service = 3;
}


// RPC request & response messages
message GetAuthenticationTokenRequest {
}

message GetAuthenticationTokenResponse {
    optional Token token = 1;
}

message WhoAmIRequest {
}

message WhoAmIResponse {
    optional string username = 1;
    optional string auth_method = 2;
}


// RPC service
service AuthenticationService {
    rpc GetAuthenticationToken(GetAuthenticationTokenRequest)
        returns (GetAuthenticationTokenResponse);

    rpc WhoAmI(WhoAmIRequest)
        returns (WhoAmIResponse);
}