| /** |
| * 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 = "proto3"; |
| |
| package bookkeeper.proto.kv; |
| |
| option java_multiple_files = true; |
| option java_package = "org.apache.bookkeeper.stream.proto.kv"; |
| |
| message KeyValue { |
| // key is the key in bytes. An empty key is not allowed. |
| bytes key = 1; |
| // create_revision is the revision of last creation on this key. |
| int64 create_revision = 2; |
| // mod_revision is the revision of last modification on this key. |
| int64 mod_revision = 3; |
| // version is the version of the key. A deletion resets |
| // the version to zero and any modification of the key |
| // increases its version. |
| int64 version = 4; |
| // value is the value held by the key, in bytes. |
| bytes value = 5; |
| bool is_number = 6; |
| int64 number_value = 7; |
| } |
| |
| message Event { |
| enum EventType { |
| PUT = 0; |
| DELETE = 1; |
| } |
| // type is the kind of event. If type is a PUT, it indicates |
| // new data has been stored to the key. If type is a DELETE, |
| // it indicates the key was deleted. |
| EventType type = 1; |
| // kv holds the KeyValue for the event. |
| // A PUT event contains current kv pair. |
| // A PUT event with kv.Version=1 indicates the creation of a key. |
| // A DELETE/EXPIRE event contains the deleted key with |
| // its modification revision set to the revision of deletion. |
| KeyValue kv = 2; |
| |
| // prev_kv holds the key-value pair before the event happens. |
| KeyValue prev_kv = 3; |
| } |