client: make SubscriptionMode a member of ConsumerConfigurationData (a…

…pache#6337)

Currently, SubscriptionMode is a parameter to create ConsumerImpl, but it is not exported out, and user could not set this value for consumer.  This change tries to make SubscriptionMode a member of ConsumerConfigurationData, so user could set this parameter when create consumer.  

(cherry picked from commit 208af7c)

pulsar-broker/src/main/java/org/apache/pulsar/client/impl/RawReaderImpl.java

@@ -117,7 +117,6 @@ static class RawConsumerImpl extends ConsumerImpl<byte[]> {
                 TopicName.getPartitionIndex(conf.getSingleTopic()),
                 false,
                 consumerFuture,
-                SubscriptionMode.Durable,
                 MessageId.earliest,
                 0 /* startMessageRollbackDurationInSec */,
                 Schema.BYTES, null,

pulsar-client-api/src/main/java/org/apache/pulsar/client/api/ConsumerBuilder.java

@@ -228,6 +228,21 @@ public interface ConsumerBuilder<T> extends Cloneable {
      */
     ConsumerBuilder<T> subscriptionType(SubscriptionType subscriptionType);
 
+    /**
+     * Select the subscription mode to be used when subscribing to the topic.
+     *
+     * <p>Options are:
+     * <ul>
+     *  <li>{@link SubscriptionMode#Durable} (Default)</li>
+     *  <li>{@link SubscriptionMode#NonDurable}</li>
+     * </ul>
+     *
+     * @param subscriptionMode
+     *            the subscription mode value
+     * @return the consumer builder instance
+     */
+    ConsumerBuilder<T> subscriptionMode(SubscriptionMode subscriptionMode);
+
     /**
      * Sets a {@link MessageListener} for the consumer
      *

pulsar-client-api/src/main/java/org/apache/pulsar/client/api/SubscriptionMode.java

@@ -0,0 +1,31 @@
+/**
+ * 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.api;
+
+/**
+ * Types of subscription mode supported by Pulsar.
+ */
+public enum SubscriptionMode {
+    // Make the subscription to be backed by a durable cursor that will retain messages and persist the current
+    // position
+    Durable,
+
+    // Lightweight subscription mode that doesn't have a durable cursor associated
+    NonDurable
+}

pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerBuilderImpl.java

@@ -47,6 +47,7 @@
 import org.apache.pulsar.client.api.PulsarClientException.InvalidConfigurationException;
 import org.apache.pulsar.client.api.Schema;
 import org.apache.pulsar.client.api.SubscriptionInitialPosition;
+import org.apache.pulsar.client.api.SubscriptionMode;
 import org.apache.pulsar.client.api.SubscriptionType;
 import org.apache.pulsar.client.impl.conf.ConfigurationDataUtils;
 import org.apache.pulsar.client.impl.conf.ConsumerConfigurationData;
@@ -191,6 +192,13 @@ public ConsumerBuilder<T> subscriptionType(@NonNull SubscriptionType subscriptio
         return this;
     }
 
+    @Override
+    public ConsumerBuilder<T> subscriptionMode(@NonNull SubscriptionMode subscriptionMode) {
+        conf.setSubscriptionMode(subscriptionMode);
+        return this;
+    }
+
+
     @Override
     public ConsumerBuilder<T> messageListener(@NonNull MessageListener<T> messageListener) {
         conf.setMessageListener(messageListener);

pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerImpl.java

@@ -63,6 +63,7 @@
 import org.apache.pulsar.client.api.PulsarClientException;
 import org.apache.pulsar.client.api.Schema;
 import org.apache.pulsar.client.api.SubscriptionInitialPosition;
+import org.apache.pulsar.client.api.SubscriptionMode;
 import org.apache.pulsar.client.api.SubscriptionType;
 import org.apache.pulsar.client.api.PulsarClientException.TopicDoesNotExistException;
 import org.apache.pulsar.client.impl.conf.ConsumerConfigurationData;
@@ -150,39 +151,38 @@ public class ConsumerImpl<T> extends ConsumerBase<T> implements ConnectionHandle
 
     private final boolean createTopicIfDoesNotExist;
 
-    enum SubscriptionMode {
-        // Make the subscription to be backed by a durable cursor that will retain messages and persist the current
-        // position
-        Durable,
 
-        // Lightweight subscription mode that doesn't have a durable cursor associated
-        NonDurable
-    }
-
-    static <T> ConsumerImpl<T> newConsumerImpl(PulsarClientImpl client, String topic, ConsumerConfigurationData<T> conf,
-            ExecutorService listenerExecutor, int partitionIndex, boolean hasParentConsumer, CompletableFuture<Consumer<T>> subscribeFuture,
-            SubscriptionMode subscriptionMode, MessageId startMessageId, Schema<T> schema, ConsumerInterceptors<T> interceptors,
-            boolean createTopicIfDoesNotExist) {
+    static <T> ConsumerImpl<T> newConsumerImpl(PulsarClientImpl client,
+                                               String topic,
+                                               ConsumerConfigurationData<T> conf,
+                                               ExecutorService listenerExecutor,
+                                               int partitionIndex,
+                                               boolean hasParentConsumer,
+                                               CompletableFuture<Consumer<T>> subscribeFuture,
+                                               MessageId startMessageId,
+                                               Schema<T> schema,
+                                               ConsumerInterceptors<T> interceptors,
+                                               boolean createTopicIfDoesNotExist) {
         if (conf.getReceiverQueueSize() == 0) {
             return new ZeroQueueConsumerImpl<>(client, topic, conf, listenerExecutor, partitionIndex, hasParentConsumer,
                     subscribeFuture,
-                    subscriptionMode, startMessageId, schema, interceptors,
+                    startMessageId, schema, interceptors,
                     createTopicIfDoesNotExist);
         } else {
             return new ConsumerImpl<>(client, topic, conf, listenerExecutor, partitionIndex, hasParentConsumer,
-                    subscribeFuture, subscriptionMode, startMessageId, 0 /* rollback time in sec to start msgId */,
+                    subscribeFuture, startMessageId, 0 /* rollback time in sec to start msgId */,
                     schema, interceptors, createTopicIfDoesNotExist);
         }
     }
 
     protected ConsumerImpl(PulsarClientImpl client, String topic, ConsumerConfigurationData<T> conf,
             ExecutorService listenerExecutor, int partitionIndex, boolean hasParentConsumer,
-            CompletableFuture<Consumer<T>> subscribeFuture, SubscriptionMode subscriptionMode, MessageId startMessageId,
+            CompletableFuture<Consumer<T>> subscribeFuture, MessageId startMessageId,
             long startMessageRollbackDurationInSec, Schema<T> schema, ConsumerInterceptors<T> interceptors,
             boolean createTopicIfDoesNotExist) {
         super(client, topic, conf, conf.getReceiverQueueSize(), listenerExecutor, subscribeFuture, schema, interceptors);
         this.consumerId = client.newConsumerId();
-        this.subscriptionMode = subscriptionMode;
+        this.subscriptionMode = conf.getSubscriptionMode();
         this.startMessageId = startMessageId != null ? new BatchMessageIdImpl((MessageIdImpl) startMessageId) : null;
         this.lastDequeuedMessage = startMessageId == null ? MessageId.earliest : startMessageId;
         this.initialStartMessageId = this.startMessageId;

pulsar-client/src/main/java/org/apache/pulsar/client/impl/MultiTopicsConsumerImpl.java

@@ -59,7 +59,6 @@
 import org.apache.pulsar.client.api.PulsarClientException.NotSupportedException;
 import org.apache.pulsar.client.api.Schema;
 import org.apache.pulsar.client.api.SubscriptionType;
-import org.apache.pulsar.client.impl.ConsumerImpl.SubscriptionMode;
 import org.apache.pulsar.client.impl.conf.ConsumerConfigurationData;
 import org.apache.pulsar.client.impl.transaction.TransactionImpl;
 import org.apache.pulsar.client.util.ConsumerName;
@@ -833,10 +832,10 @@ private void doSubscribeTopicPartitions(CompletableFuture<Void> subscribeResult,
                         String partitionName = TopicName.get(topicName).getPartition(partitionIndex).toString();
                         CompletableFuture<Consumer<T>> subFuture = new CompletableFuture<>();
                         ConsumerImpl<T> newConsumer = ConsumerImpl.newConsumerImpl(client, partitionName,
-                                configurationData, client.externalExecutorProvider().getExecutor(),
-                                partitionIndex, true, subFuture,
-                                SubscriptionMode.Durable, null, schema, interceptors,
-                                createIfDoesNotExist);
+                            configurationData, client.externalExecutorProvider().getExecutor(),
+                            partitionIndex, true, subFuture,
+                            null, schema, interceptors,
+                            createIfDoesNotExist);
                         consumers.putIfAbsent(newConsumer.getTopic(), newConsumer);
                         return subFuture;
                     })
@@ -847,7 +846,7 @@ private void doSubscribeTopicPartitions(CompletableFuture<Void> subscribeResult,
 
             CompletableFuture<Consumer<T>> subFuture = new CompletableFuture<>();
             ConsumerImpl<T> newConsumer = ConsumerImpl.newConsumerImpl(client, topicName, internalConfig,
-                    client.externalExecutorProvider().getExecutor(), -1, true, subFuture, SubscriptionMode.Durable, null,
+                    client.externalExecutorProvider().getExecutor(), -1, true, subFuture, null,
                     schema, interceptors,
                     createIfDoesNotExist);
             consumers.putIfAbsent(newConsumer.getTopic(), newConsumer);
@@ -1118,7 +1117,7 @@ private CompletableFuture<Void> subscribeIncreasedTopicPartitions(String topicNa
                         ConsumerImpl<T> newConsumer = ConsumerImpl.newConsumerImpl(
                             client, partitionName, configurationData,
                             client.externalExecutorProvider().getExecutor(),
-                            partitionIndex, true, subFuture, SubscriptionMode.Durable, null, schema, interceptors,
+                            partitionIndex, true, subFuture, null, schema, interceptors,
                             true /* createTopicIfDoesNotExist */);
                         consumers.putIfAbsent(newConsumer.getTopic(), newConsumer);
                         if (log.isDebugEnabled()) {

pulsar-client/src/main/java/org/apache/pulsar/client/impl/PulsarClientImpl.java

@@ -64,7 +64,6 @@
 import org.apache.pulsar.client.api.schema.SchemaInfoProvider;
 import org.apache.pulsar.client.api.AuthenticationFactory;
 import org.apache.pulsar.client.api.transaction.TransactionBuilder;
-import org.apache.pulsar.client.impl.ConsumerImpl.SubscriptionMode;
 import org.apache.pulsar.client.impl.conf.ClientConfigurationData;
 import org.apache.pulsar.client.impl.conf.ConsumerConfigurationData;
 import org.apache.pulsar.client.impl.conf.ProducerConfigurationData;
@@ -354,7 +353,7 @@ private <T> CompletableFuture<Consumer<T>> doSingleTopicSubscribeAsync(ConsumerC
             } else {
                 int partitionIndex = TopicName.getPartitionIndex(topic);
                 consumer = ConsumerImpl.newConsumerImpl(PulsarClientImpl.this, topic, conf, listenerThread, partitionIndex, false,
-                        consumerSubscribedFuture, SubscriptionMode.Durable, null, schema, interceptors,
+                        consumerSubscribedFuture,null, schema, interceptors,
                         true /* createTopicIfDoesNotExist */);
             }
 

pulsar-client/src/main/java/org/apache/pulsar/client/impl/ReaderImpl.java

@@ -26,7 +26,6 @@
 import org.apache.commons.codec.digest.DigestUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.pulsar.client.api.*;
-import org.apache.pulsar.client.impl.ConsumerImpl.SubscriptionMode;
 import org.apache.pulsar.client.impl.conf.ConsumerConfigurationData;
 import org.apache.pulsar.client.impl.conf.ReaderConfigurationData;
 import org.apache.pulsar.common.naming.TopicName;
@@ -47,6 +46,7 @@ public ReaderImpl(PulsarClientImpl client, ReaderConfigurationData<T> readerConf
         consumerConfiguration.getTopicNames().add(readerConfiguration.getTopicName());
         consumerConfiguration.setSubscriptionName(subscription);
         consumerConfiguration.setSubscriptionType(SubscriptionType.Exclusive);
+        consumerConfiguration.setSubscriptionMode(SubscriptionMode.NonDurable);
         consumerConfiguration.setReceiverQueueSize(readerConfiguration.getReceiverQueueSize());
         consumerConfiguration.setReadCompacted(readerConfiguration.isReadCompacted());
 
@@ -83,7 +83,7 @@ public void reachedEndOfTopic(Consumer<T> consumer) {
 
         final int partitionIdx = TopicName.getPartitionIndex(readerConfiguration.getTopicName());
         consumer = new ConsumerImpl<>(client, readerConfiguration.getTopicName(), consumerConfiguration,
-                listenerExecutor, partitionIdx, false, consumerFuture, SubscriptionMode.NonDurable,
+                listenerExecutor, partitionIdx, false, consumerFuture,
                 readerConfiguration.getStartMessageId(), readerConfiguration.getStartMessageFromRollbackDurationInSec(),
                 schema, null, true /* createTopicIfDoesNotExist */);
     }

pulsar-client/src/main/java/org/apache/pulsar/client/impl/ZeroQueueConsumerImpl.java

@@ -49,11 +49,11 @@ public class ZeroQueueConsumerImpl<T> extends ConsumerImpl<T> {
 
     public ZeroQueueConsumerImpl(PulsarClientImpl client, String topic, ConsumerConfigurationData<T> conf,
             ExecutorService listenerExecutor, int partitionIndex, boolean hasParentConsumer, CompletableFuture<Consumer<T>> subscribeFuture,
-            SubscriptionMode subscriptionMode, MessageId startMessageId, Schema<T> schema,
+            MessageId startMessageId, Schema<T> schema,
             ConsumerInterceptors<T> interceptors,
             boolean createTopicIfDoesNotExist) {
         super(client, topic, conf, listenerExecutor, partitionIndex, hasParentConsumer, subscribeFuture,
-                subscriptionMode, startMessageId, 0 /* startMessageRollbackDurationInSec */, schema, interceptors,
+                startMessageId, 0 /* startMessageRollbackDurationInSec */, schema, interceptors,
                 createTopicIfDoesNotExist);
     }
 

pulsar-client/src/main/java/org/apache/pulsar/client/impl/conf/ConsumerConfigurationData.java

@@ -43,6 +43,7 @@
 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.SubscriptionMode;
 import org.apache.pulsar.client.api.SubscriptionType;
 
 @Data
@@ -59,6 +60,8 @@ public class ConsumerConfigurationData<T> implements Serializable, Cloneable {
 
     private SubscriptionType subscriptionType = SubscriptionType.Exclusive;
 
+    private SubscriptionMode subscriptionMode = SubscriptionMode.Durable;
+
     @JsonIgnore
     private MessageListener<T> messageListener;
 

pulsar-client/src/test/java/org/apache/pulsar/client/impl/ConsumerImplTest.java

@@ -18,25 +18,32 @@
  */
 package org.apache.pulsar.client.impl;
 
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.anyString;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
 import io.netty.util.Timer;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
 import org.apache.pulsar.client.api.Consumer;
 import org.apache.pulsar.client.api.Message;
 import org.apache.pulsar.client.api.PulsarClientException;
-import org.apache.pulsar.client.impl.ConsumerImpl.SubscriptionMode;
 import org.apache.pulsar.client.impl.conf.ClientConfigurationData;
 import org.apache.pulsar.client.impl.conf.ConsumerConfigurationData;
 import org.testng.Assert;
 import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.Test;
 
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CompletionException;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
-
-import static org.mockito.Mockito.*;
-
 public class ConsumerImplTest {
 
 
@@ -62,7 +69,7 @@ public void setUp() {
 
         consumerConf.setSubscriptionName("test-sub");
         consumer = ConsumerImpl.newConsumerImpl(client, topic, consumerConf,
-                executorService, -1, false, subscribeFuture, SubscriptionMode.Durable, null, null, null,
+                executorService, -1, false, subscribeFuture, null, null, null,
                 true);
     }