| /* |
| * 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 org.apache.beam.sdk.io.kinesis; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.amazonaws.services.kinesis.clientlibrary.lib.worker.InitialPositionInStream; |
| import com.amazonaws.services.kinesis.model.ShardIteratorType; |
| import java.io.Serializable; |
| import java.util.Objects; |
| import org.joda.time.Instant; |
| |
| /** |
| * Denotes a point at which the reader should start reading from a Kinesis stream. It can be |
| * expressed either as an {@link InitialPositionInStream} enum constant or a timestamp, in which |
| * case the reader will start reading at the specified point in time. |
| */ |
| class StartingPoint implements Serializable { |
| |
| private final InitialPositionInStream position; |
| private final Instant timestamp; |
| |
| public StartingPoint(InitialPositionInStream position) { |
| this.position = checkNotNull(position, "position"); |
| this.timestamp = null; |
| } |
| |
| public StartingPoint(Instant timestamp) { |
| this.timestamp = checkNotNull(timestamp, "timestamp"); |
| this.position = null; |
| } |
| |
| public InitialPositionInStream getPosition() { |
| return position; |
| } |
| |
| public String getPositionName() { |
| return position != null ? position.name() : ShardIteratorType.AT_TIMESTAMP.name(); |
| } |
| |
| public Instant getTimestamp() { |
| return timestamp != null ? timestamp : null; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| StartingPoint that = (StartingPoint) o; |
| return position == that.position && Objects.equals(timestamp, that.timestamp); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(position, timestamp); |
| } |
| |
| @Override |
| public String toString() { |
| if (timestamp == null) { |
| return position.toString(); |
| } else { |
| return "Starting at timestamp " + timestamp; |
| } |
| } |
| } |