| /* |
| * 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.seatunnel.connectors.seatunnel.pulsar.source.enumerator.cursor.start; |
| |
| import org.apache.seatunnel.connectors.seatunnel.pulsar.source.enumerator.topic.TopicPartition; |
| |
| import org.apache.pulsar.client.admin.PulsarAdmin; |
| import org.apache.pulsar.client.admin.PulsarAdminException; |
| import org.apache.pulsar.client.api.Consumer; |
| import org.apache.pulsar.client.api.MessageId; |
| import org.apache.pulsar.client.api.PulsarClientException; |
| |
| public class SubscriptionStartCursor implements StartCursor { |
| private static final long serialVersionUID = 1L; |
| |
| private final CursorResetStrategy cursorResetStrategy; |
| |
| public SubscriptionStartCursor() { |
| this.cursorResetStrategy = CursorResetStrategy.LATEST; |
| } |
| |
| public SubscriptionStartCursor(CursorResetStrategy cursorResetStrategy) { |
| this.cursorResetStrategy = cursorResetStrategy; |
| } |
| |
| public void ensureSubscription(String subscription, TopicPartition partition, PulsarAdmin pulsarAdmin) { |
| try { |
| if (pulsarAdmin.topics() |
| .getSubscriptions(partition.getFullTopicName()) |
| .contains(subscription)) { |
| return; |
| } |
| pulsarAdmin.topics().createSubscription(partition.getFullTopicName(), subscription, CursorResetStrategy.EARLIEST == cursorResetStrategy ? MessageId.earliest : MessageId.latest); |
| } catch (PulsarAdminException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public void seekPosition(Consumer<?> consumer) throws PulsarClientException { |
| // nothing |
| } |
| |
| public enum CursorResetStrategy { |
| LATEST, EARLIEST |
| } |
| } |