/**
 * 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";
package hbase.pb;

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

import "Table.proto";

message Permission {
    enum Action {
        READ = 0;
        WRITE = 1;
        EXEC = 2;
        CREATE = 3;
        ADMIN = 4;
    }
    enum Type {
        Global = 1;
        Namespace = 2;
        Table = 3;
    }
    required Type type = 1;
    optional GlobalPermission global_permission = 2;
    optional NamespacePermission namespace_permission = 3;
    optional TablePermission table_permission = 4;
}

message TablePermission {
    optional TableName table_name = 1;
    optional bytes family = 2;
    optional bytes qualifier = 3;
    repeated Permission.Action action = 4;
}

message NamespacePermission {
    optional bytes namespace_name = 1;
    repeated Permission.Action action = 2;
}

message GlobalPermission {
    repeated Permission.Action action = 1;
}

message UserPermission {
    required bytes user = 1;
    required Permission permission = 3;
}

/**
 * Content of the /hbase/acl/<table or namespace> znode.
 */
message UsersAndPermissions {
  message UserPermissions {
    required bytes user = 1;
    repeated Permission permissions = 2;
  }

  repeated UserPermissions user_permissions = 1;
}

message GrantRequest {
  required UserPermission user_permission = 1;
  optional bool merge_existing_permissions = 2 [default = false];
}

message GrantResponse {
}

message RevokeRequest {
  required UserPermission user_permission = 1;
}

message RevokeResponse {
}

message GetUserPermissionsRequest {
  optional Permission.Type type = 1;
  optional TableName table_name = 2;
  optional bytes namespace_name = 3;
  optional bytes column_family = 4;
  optional bytes column_qualifier = 5;
  optional bytes user_name = 6;
}

message GetUserPermissionsResponse {
  repeated UserPermission user_permission = 1;
}

message CheckPermissionsRequest {
  repeated Permission permission = 1;
}

message CheckPermissionsResponse {
}

message HasPermissionRequest {
  required TablePermission table_permission = 1;
  required bytes user_name = 2;
}

message HasPermissionResponse {
  optional bool has_permission = 1;
}

service AccessControlService {
    rpc Grant(GrantRequest)
      returns (GrantResponse);

    rpc Revoke(RevokeRequest)
      returns (RevokeResponse);

    rpc GetUserPermissions(GetUserPermissionsRequest)
      returns (GetUserPermissionsResponse);

    rpc CheckPermissions(CheckPermissionsRequest)
      returns (CheckPermissionsResponse);

    rpc HasPermission(HasPermissionRequest)
      returns (HasPermissionResponse);
}
