[fix][client] Fix pattern consumer create crash if a part of partitio…

…ns of a topic have been deleted (apache#22854)

pulsar-broker/src/test/java/org/apache/pulsar/client/api/PatternMultiTopicsConsumerTest.java

@@ -18,11 +18,14 @@
  */
 package org.apache.pulsar.client.api;
 
+import static org.testng.Assert.fail;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
+import org.apache.pulsar.broker.BrokerTestUtil;
+import org.apache.pulsar.client.impl.PatternMultiTopicsConsumerImpl;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.testng.Assert;
@@ -95,4 +98,38 @@ private void testWithConsumer(Consumer<byte[]> consumer) throws Exception {
         consumer.close();
     }
 
+    @Test(timeOut = 30000)
+    public void testFailedSubscribe() throws Exception {
+        final String topicName1 = BrokerTestUtil.newUniqueName("persistent://public/default/tp_test");
+        final String topicName2 = BrokerTestUtil.newUniqueName("persistent://public/default/tp_test");
+        final String topicName3 = BrokerTestUtil.newUniqueName("persistent://public/default/tp_test");
+        final String subName = "s1";
+        admin.topics().createPartitionedTopic(topicName1, 2);
+        admin.topics().createPartitionedTopic(topicName2, 3);
+        admin.topics().createNonPartitionedTopic(topicName3);
+
+        // Register a exclusive consumer to makes the pattern consumer failed to subscribe.
+        Consumer c1 = pulsarClient.newConsumer(Schema.STRING).topic(topicName3).subscriptionType(SubscriptionType.Exclusive)
+                .subscriptionName(subName).subscribe();
+
+        try {
+            PatternMultiTopicsConsumerImpl<String> consumer =
+                (PatternMultiTopicsConsumerImpl<String>) pulsarClient.newConsumer(Schema.STRING)
+                    .topicsPattern("persistent://public/default/tp_test.*")
+                    .subscriptionType(SubscriptionType.Failover)
+                    .subscriptionName(subName)
+                    .subscribe();
+            fail("Expected a consumer busy error.");
+        } catch (Exception ex) {
+            log.info("consumer busy", ex);
+        }
+
+        c1.close();
+        // Verify all internal consumer will be closed.
+        // If delete topic without "-f" work, it means the internal consumers were closed.
+        admin.topics().delete(topicName3);
+        admin.topics().deletePartitionedTopic(topicName2);
+        admin.topics().deletePartitionedTopic(topicName1);
+    }
+
 }

pulsar-broker/src/test/java/org/apache/pulsar/client/impl/PatternTopicsConsumerImplTest.java

@@ -19,7 +19,6 @@
 package org.apache.pulsar.client.impl;
 
 import static org.mockito.Mockito.doReturn;
-import static org.mockito.Mockito.spy;
 import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.assertSame;
 import static org.testng.Assert.assertTrue;
@@ -35,7 +34,6 @@
 import java.util.regex.Pattern;
 import java.util.stream.IntStream;
 
-import io.netty.util.Timeout;
 import org.apache.pulsar.broker.BrokerTestUtil;
 import org.apache.pulsar.broker.namespace.NamespaceService;
 import org.apache.pulsar.client.api.Consumer;
@@ -53,6 +51,7 @@
 import org.apache.pulsar.common.api.proto.BaseCommand;
 import org.apache.pulsar.common.api.proto.CommandWatchTopicListSuccess;
 import org.apache.pulsar.common.naming.NamespaceName;
+import org.apache.pulsar.common.naming.TopicName;
 import org.apache.pulsar.common.policies.data.TenantInfoImpl;
 import org.awaitility.Awaitility;
 import org.awaitility.reflect.WhiteboxImpl;
@@ -1024,17 +1023,17 @@ public void testAutoUnsubscribePatternConsumer() throws Exception {
 
         // 6. remove producer 1,3; verify only consumer 2 left
         // seems no direct way to verify auto-unsubscribe, because this patternConsumer also referenced the topic.
-        List<String> topicNames = Lists.newArrayList(topicName2);
+        String tp2p0 = TopicName.get(topicName2).getPartition(0).toString();
+        String tp2p1 = TopicName.get(topicName2).getPartition(1).toString();
+        List<String> topicNames = Lists.newArrayList(tp2p0, tp2p1);
         NamespaceService nss = pulsar.getNamespaceService();
         doReturn(CompletableFuture.completedFuture(topicNames)).when(nss)
                 .getListOfPersistentTopics(NamespaceName.get("my-property/my-ns"));
 
         // 7. call recheckTopics to unsubscribe topic 1,3, verify topics number: 2=6-1-3
         log.debug("recheck topics change");
-        PatternMultiTopicsConsumerImpl<byte[]> consumer1 = ((PatternMultiTopicsConsumerImpl<byte[]>) consumer);
-        Timeout recheckPatternTimeout = spy(consumer1.getRecheckPatternTimeout());
-        doReturn(false).when(recheckPatternTimeout).isCancelled();
-        consumer1.run(recheckPatternTimeout);
+        PatternConsumerUpdateQueue taskQueue = WhiteboxImpl.getInternalState(consumer, "updateTaskQueue");
+        taskQueue.appendRecheckOp();
         Thread.sleep(100);
         assertEquals(((PatternMultiTopicsConsumerImpl<byte[]>) consumer).getPartitions().size(), 2);
         assertEquals(((PatternMultiTopicsConsumerImpl<byte[]>) consumer).getConsumers().size(), 2);

pulsar-broker/src/test/java/org/apache/pulsar/client/impl/TopicsConsumerImplTest.java

@@ -21,6 +21,7 @@
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 import io.netty.util.Timeout;
+import java.time.Duration;
 import lombok.Cleanup;
 import org.apache.bookkeeper.mledger.Position;
 import org.apache.bookkeeper.mledger.impl.ManagedCursorImpl;
@@ -1321,7 +1322,6 @@ public void testPartitionsUpdatesForMultipleTopics() throws Exception {
         Assert.assertEquals(consumer.allTopicPartitionsNumber.intValue(), 2);
 
         admin.topics().updatePartitionedTopic(topicName0, 5);
-        consumer.getPartitionsAutoUpdateTimeout().task().run(consumer.getPartitionsAutoUpdateTimeout());
 
         Awaitility.await().untilAsserted(() -> {
             Assert.assertEquals(consumer.getPartitionsOfTheTopicMap(), 5);
@@ -1341,9 +1341,8 @@ public void testPartitionsUpdatesForMultipleTopics() throws Exception {
         });
 
         admin.topics().updatePartitionedTopic(topicName1, 5);
-        consumer.getPartitionsAutoUpdateTimeout().task().run(consumer.getPartitionsAutoUpdateTimeout());
 
-        Awaitility.await().untilAsserted(() -> {
+        Awaitility.await().atMost(Duration.ofSeconds(30)).untilAsserted(() -> {
             Assert.assertEquals(consumer.getPartitionsOfTheTopicMap(), 10);
             Assert.assertEquals(consumer.allTopicPartitionsNumber.intValue(), 10);
         });

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

@@ -20,6 +20,7 @@
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static org.apache.pulsar.common.protocol.Commands.DEFAULT_CONSUMER_EPOCH;
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.Queues;
 import io.netty.util.Timeout;
 import java.nio.charset.StandardCharsets;
@@ -1285,5 +1286,10 @@ public boolean hasBatchReceiveTimeout() {
         return batchReceiveTimeout != null;
     }
 
+    @VisibleForTesting
+    CompletableFuture<Consumer<T>> getSubscribeFuture() {
+        return subscribeFuture;
+    }
+
     private static final Logger log = LoggerFactory.getLogger(ConsumerBase.class);
 }

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

@@ -117,7 +117,14 @@ CompletableFuture<PartitionedTopicMetadata> getPartitionedTopicMetadata(TopicNam
     InetSocketAddress resolveHost();
 
     /**
-     * Returns all the topics name for a given namespace.
+     * Returns all the topics that matches {@param topicPattern} for a given namespace.
+     *
+     * Note: {@param topicPattern} it relate to the topic name(without the partition suffix). For example:
+     *  - There is a partitioned topic "tp-a" with two partitions.
+     *    - tp-a-partition-0
+     *    - tp-a-partition-1
+     *  - If {@param topicPattern} is "tp-a", the consumer will subscribe to the two partitions.
+     *  - if {@param topicPattern} is "tp-a-partition-0", the consumer will subscribe nothing.
      *
      * @param namespace : namespace-name
      * @return