/* -------------------------------------------------------------------
**
** machi.proto: Protocol buffers for Machi
**
** Copyright (c) 2007-2015 Basho Technologies, Inc.  All Rights Reserved.
**
** This file is provided 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.
**
** -------------------------------------------------------------------
*/

/*
** Revision: 0.1
*/

// Java package specifiers
option java_package = "com.basho.machi.protobuf";
option java_outer_classname = "MachiPB";

enum MpbStatusCode {
     OK = 0;
     ERROR = 1;
}

enum MpbErrorGeneral {
     BAD_ARG = 0;
     WEDGED = 1;
     BAD_CHECKSUM = 2;
}

// Must match with machi.hrl's values!
enum MpbCSumType {
     CSUM_TAG_NONE = 0;
     CSUM_TAG_CLIENT_GEN = 1;
     CSUM_TAG_SERVER_GEN = 2;
     CSUM_TAG_SERVER_REGEN = 3;
}

// chunk_pos() type
message MpbChunkPos {
    required uint32 offset = 1;
    required uint32 chunk_size = 2;
    required bytes file_name = 3;
}

// chunk_csum() type
message MpbChunkCSum {
    required MpbCSumType type = 1;
    required bytes csum = 2;
}

// epoch_id() type
message MpbEpochId {
    required uint32 epoch_num = 1;
    required MpbChunkCSum epoch_csum = 2;
}

// Error response - may be generated for any Req
message MpbErrorResp {
    required bytes errmsg = 1;
    required uint32 errcode = 2;
}

// append_chunk() request
message MpbAppendChunkReq {
    required string prefix = 1;
    optional bytes placement_key = 2;
    required bytes chunk = 3;
    optional uint32 chunk_extra = 4;
}

// append_chunk() response
message MpbAppendChunkResp {
    required MpbStatusCode status = 1;
    optional MpbChunkPos chunk_pos = 2;
    optional MbpGeneralError = 3;
}

// Authentication request
message MpbAuthReq {
    required bytes user = 1;
    required bytes password = 2;
}