Add Mqtt5SubscribeOnReconnectIT

Author: Donnerbart

src/integrationTest/java/com/hivemq/client/lifecycle/Mqtt5SubscribeOnReconnectIT.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright 2018-present HiveMQ and the HiveMQ Community
+ *
+ * Licensed 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 com.hivemq.client.lifecycle;
+
+import com.hivemq.client.mqtt.MqttGlobalPublishFilter;
+import com.hivemq.client.mqtt.datatypes.MqttQos;
+import com.hivemq.client.mqtt.lifecycle.MqttClientReconnector;
+import com.hivemq.client.mqtt.mqtt5.Mqtt5BlockingClient;
+import com.hivemq.client.mqtt.mqtt5.Mqtt5Client;
+import com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish;
+import com.hivemq.testcontainer.junit5.HiveMQTestContainerExtension;
+import org.jetbrains.annotations.NotNull;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
+import org.junit.jupiter.api.extension.RegisterExtension;
+import org.testcontainers.utility.MountableFile;
+
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import static org.awaitility.Awaitility.await;
+
+public class Mqtt5SubscribeOnReconnectIT {
+
+    @RegisterExtension
+    public final @NotNull HiveMQTestContainerExtension hivemq =
+            new HiveMQTestContainerExtension().withHiveMQConfig(MountableFile.forClasspathResource("/config.xml"));
+
+    private final @NotNull AtomicBoolean reconnect = new AtomicBoolean(true);
+
+    @AfterEach
+    void tearDown() {
+        reconnect.set(false);
+    }
+
+    @Test
+    @Timeout(60)
+    void mqtt5_resubscribe_on_reconnect() throws Exception {
+        final Mqtt5BlockingClient publisher =
+                Mqtt5Client.builder().identifier("PublishClient").serverPort(hivemq.getMqttPort()).buildBlocking();
+        publisher.connect();
+
+        final ConcurrentLinkedQueue<Mqtt5Publish> publishes = new ConcurrentLinkedQueue<>();
+        final CountDownLatch latch = new CountDownLatch(1);
+        final Mqtt5BlockingClient subscriber = Mqtt5Client.builder()
+                .identifier("SubscribeClient")
+                .serverPort(hivemq.getMqttPort())
+                .addConnectedListener(context -> System.out.println("Subscriber connected"))
+                .addDisconnectedListener(context -> {
+                    System.out.println("Subscriber disconnected");
+                    final MqttClientReconnector reconnector = context.getReconnector();
+                    reconnector.resubscribeIfSessionPresent(true);
+                    if (reconnect.get()) {
+                        System.out.println("Reconnect subscriber");
+                        reconnector.reconnect(true);
+                        latch.countDown();
+                    }
+                })
+                .buildBlocking();
+
+        subscriber.toAsync().publishes(MqttGlobalPublishFilter.ALL, publishes::add);
+        subscriber.connectWith().cleanStart(false).sessionExpiryInterval(3600).send();
+        subscriber.subscribeWith().topicFilter("#").qos(MqttQos.AT_LEAST_ONCE).send();
+
+        for (int i = 0; i < 10; i++) {
+            publisher.toAsync().publishWith().topic("test").qos(MqttQos.AT_LEAST_ONCE).send();
+        }
+        await().until(() -> {
+            System.out.println(publishes.size());
+            return publishes.size() == 10;
+        });
+
+        subscriber.disconnect();
+        latch.await();
+        for (int i = 0; i < 10; i++) {
+            publisher.toAsync().publishWith().topic("test").qos(MqttQos.AT_LEAST_ONCE).send();
+        }
+        await().until(() -> publishes.size() == 20);
+    }
+}