| /** |
| * 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. |
| */ |
| |
| package kafka.consumer.storage |
| |
| |
| /** |
| * A method for storing offsets for the consumer. |
| * This is used to track the progress of the consumer in the stream. |
| */ |
| trait OffsetStorage { |
| |
| /** |
| * Reserve a range of the length given by increment. |
| * @param increment The size to reserver |
| * @return The range reserved |
| */ |
| def reserve(node: Int, topic: String): Long |
| |
| /** |
| * Update the offset to the new offset |
| * @param offset The new offset |
| */ |
| def commit(node: Int, topic: String, offset: Long) |
| |
| } |