test ackDeadline

google-cloud-clients/google-cloud-pubsub/src/test/java/com/google/cloud/pubsub/it/SubscriberTest.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright 2016 Google LLC
+ *
+ * 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.google.cloud.pubsub.it;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.cloud.ServiceOptions;
+import com.google.cloud.pubsub.v1.AckReplyConsumer;
+import com.google.cloud.pubsub.v1.MessageReceiver;
+import com.google.cloud.pubsub.v1.Publisher;
+import com.google.cloud.pubsub.v1.Subscriber;
+import com.google.cloud.pubsub.v1.SubscriptionAdminClient;
+import com.google.cloud.pubsub.v1.TopicAdminClient;
+import com.google.common.util.concurrent.MoreExecutors;
+
+import com.google.protobuf.ByteString;
+import com.google.pubsub.v1.ProjectSubscriptionName;
+import com.google.pubsub.v1.ProjectTopicName;
+import com.google.pubsub.v1.PubsubMessage;
+import com.google.pubsub.v1.PushConfig;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.Timeout;
+
+import java.util.UUID;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+
+public class SubscriberTest {
+
+  private static final String NAME_SUFFIX = UUID.randomUUID().toString();
+
+  private static TopicAdminClient topicAdminClient;
+
+  private static SubscriptionAdminClient subscriptionAdminClient;
+
+  private static String projectId;
+
+  @Rule
+  public Timeout globalTimeout = Timeout.seconds(300);
+
+  @BeforeClass
+  public static void setupClass() throws Exception {
+    topicAdminClient = TopicAdminClient.create();
+    subscriptionAdminClient = SubscriptionAdminClient.create();
+    projectId = ServiceOptions.getDefaultProjectId();
+  }
+
+  @AfterClass
+  public static void tearDownClass() {
+    topicAdminClient.close();
+    subscriptionAdminClient.close();
+  }
+
+  private String formatForTest(String resourceName) {
+    return resourceName + "-" + NAME_SUFFIX;
+  }
+
+  @Test
+  public void testPublishSubscribe() throws Exception {
+    ProjectTopicName topicName = ProjectTopicName.of(projectId, formatForTest("testing-publish-subscribe-topic"));
+    ProjectSubscriptionName subscriptionName = ProjectSubscriptionName.of(projectId,
+        formatForTest("testing-publish-subscribe-subscription"));
+
+    topicAdminClient.createTopic(topicName);
+    subscriptionAdminClient.createSubscription(
+        subscriptionName, topicName, PushConfig.newBuilder().build(), 10);
+
+    final BlockingQueue<Pair<PubsubMessage, AckReplyConsumer>> receiveQueue = new LinkedBlockingQueue<>();
+    Subscriber subscriber = Subscriber.newBuilder(
+        subscriptionName,
+        new MessageReceiver() {
+          @Override
+          public void receiveMessage(
+              final PubsubMessage message, final AckReplyConsumer consumer) {
+            receiveQueue.offer(Pair.of(message, consumer));
+          }
+        })
+        .build();
+    subscriber.addListener(
+        new Subscriber.Listener() {
+          public void failed(Subscriber.State from, Throwable failure) {
+            failure.printStackTrace();
+          }
+        },
+        MoreExecutors.directExecutor());
+    subscriber.startAsync();
+
+    Publisher publisher = Publisher.newBuilder(topicName).build();
+    publisher
+        .publish(PubsubMessage.newBuilder().setData(ByteString.copyFromUtf8("msg1")).build())
+        .get();
+    publisher
+        .publish(PubsubMessage.newBuilder().setData(ByteString.copyFromUtf8("msg2")).build())
+        .get();
+    publisher.shutdown();
+
+    // Recieve the first message, don't ack or nack
+    Pair<PubsubMessage, AckReplyConsumer> msgAck = receiveQueue.poll(10, TimeUnit.SECONDS);
+    String firstMsg = msgAck.getFirst().getData().toStringUtf8();
+
+
+    // Nack the other.
+    msgAck = receiveQueue.poll(1, TimeUnit.SECONDS);
+    String secondMsg = msgAck.getFirst().getData().toStringUtf8();
+    msgAck.getSecond().nack();
+
+    boolean gotSecondMsg = false;
+    boolean gotFirstdMsg = false;
+
+    // We should get both messages back.
+    for (int i = 0; i < 30; i++) {
+      Pair<PubsubMessage, AckReplyConsumer> message = receiveQueue.poll(1, TimeUnit.SECONDS);
+      if (message != null) {
+        String msg = message.getFirst().getData().toStringUtf8();
+        message.getSecond().ack();
+        if(firstMsg.equals(msg)) {
+          gotFirstdMsg = true;
+        }else if(secondMsg.equals(msg)) {
+          gotSecondMsg = true;
+        }
+        if(gotFirstdMsg && gotSecondMsg){
+          break;
+        }
+      }
+      Thread.sleep(1000);
+    }
+
+    assertThat(gotFirstdMsg).isTrue();
+    assertThat(gotSecondMsg).isTrue();
+    subscriber.stopAsync();
+    subscriptionAdminClient.deleteSubscription(subscriptionName);
+    topicAdminClient.deleteTopic(topicName);
+  }
+}
+
+class Pair<A, B> {
+  private A first;
+  private B second;
+
+  public static <A, B> Pair<A, B>  of(A first, B second){
+    return new Pair<>(first, second);
+  }
+
+  private Pair(A first, B second) {
+    this.first = first;
+    this.second = second;
+  }
+
+  public A getFirst() {
+    return first;
+  }
+
+  public B getSecond() {
+    return second;
+  }
+}