Java tutorial
/** * 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.pulsar.client.impl.conf; import static com.google.common.base.Preconditions.checkArgument; import com.fasterxml.jackson.annotation.JsonIgnore; import com.google.common.collect.Maps; import com.google.common.collect.Sets; import java.io.Serializable; import java.util.Set; import java.util.SortedMap; import java.util.TreeMap; import java.util.concurrent.TimeUnit; import java.util.regex.Pattern; import lombok.Data; import org.apache.pulsar.client.api.ConsumerCryptoFailureAction; import org.apache.pulsar.client.api.ConsumerEventListener; import org.apache.pulsar.client.api.CryptoKeyReader; import org.apache.pulsar.client.api.DeadLetterPolicy; import org.apache.pulsar.client.api.MessageListener; import org.apache.pulsar.client.api.RegexSubscriptionMode; import org.apache.pulsar.client.api.SubscriptionInitialPosition; import org.apache.pulsar.client.api.SubscriptionType; @Data public class ConsumerConfigurationData<T> implements Serializable, Cloneable { private static final long serialVersionUID = 1L; private Set<String> topicNames = Sets.newTreeSet(); private Pattern topicsPattern; private String subscriptionName; private SubscriptionType subscriptionType = SubscriptionType.Exclusive; @JsonIgnore private MessageListener<T> messageListener; @JsonIgnore private ConsumerEventListener consumerEventListener; private int receiverQueueSize = 1000; private long acknowledgementsGroupTimeMicros = TimeUnit.MILLISECONDS.toMicros(100); private int maxTotalReceiverQueueSizeAcrossPartitions = 50000; private String consumerName = null; private long ackTimeoutMillis = 0; private long tickDurationMillis = 1000; private int priorityLevel = 0; @JsonIgnore private CryptoKeyReader cryptoKeyReader = null; private ConsumerCryptoFailureAction cryptoFailureAction = ConsumerCryptoFailureAction.FAIL; private SortedMap<String, String> properties = new TreeMap<>(); private boolean readCompacted = false; private SubscriptionInitialPosition subscriptionInitialPosition = SubscriptionInitialPosition.Latest; private int patternAutoDiscoveryPeriod = 1; private RegexSubscriptionMode regexSubscriptionMode = RegexSubscriptionMode.PersistentOnly; private DeadLetterPolicy deadLetterPolicy; private boolean autoUpdatePartitions = true; @JsonIgnore public String getSingleTopic() { checkArgument(topicNames.size() == 1); return topicNames.iterator().next(); } public ConsumerConfigurationData<T> clone() { try { @SuppressWarnings("unchecked") ConsumerConfigurationData<T> c = (ConsumerConfigurationData<T>) super.clone(); c.topicNames = Sets.newTreeSet(this.topicNames); c.properties = Maps.newTreeMap(this.properties); return c; } catch (CloneNotSupportedException e) { throw new RuntimeException("Failed to clone ConsumerConfigurationData"); } } }