Java Topic类代码示例

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
/**
 * 
 * @param email
 * @return
 */
public String getOrCreateNotification(String email) {
    String ret = null;
    String topicName = getTopicName(email);
    String nextToken = null;
    do {
        ListTopicsResult listTopics = asyncSnsClient.listTopics(nextToken);
        List<Topic> topics = listTopics.getTopics();
        for (Topic s : topics) {
            if (s.getTopicArn().endsWith(topicName)) {
                ret = s.getTopicArn();
                break;
            }
        }
        nextToken = listTopics.getNextToken();
    } while (ret == null && nextToken != null);
    if (ret == null) {
        // create the topic and the subscription
        CreateTopicResult topic = asyncSnsClient.createTopic(topicName);
        SubscribeRequest req = new SubscribeRequest(topic.getTopicArn(), "email", email);
        asyncSnsClient.subscribeAsync(req);
        ret = topic.getTopicArn();
    }

    return ret;
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void shouldCreateSnsTopicResource_withName() throws Exception {
    // Given
    final String name = randomString();
    final String topicArn = topicArnForName(name);
    final List<Topic> topics = Arrays.asList(randomTopic(), randomTopic(), topicForArn(topicArn), randomTopic());
    final ListTopicsResult mockListTopicsResult = mock(ListTopicsResult.class);
    when(mockListTopicsResult.getTopics()).thenReturn(topics);
    when(mockListTopicsResult.getNextToken()).thenReturn(null);
    final String nextToken = null;
    when(mockAmazonSnsClient.listTopics(nextToken)).thenReturn(mockListTopicsResult);
    final SnsTopicResource mockSnsTopicResource = mock(SnsTopicResource.class);
    whenNew(SnsTopicResource.class).withArguments(name, topicArn, mockAmazonSnsClient)
            .thenReturn(mockSnsTopicResource);

    // When
    final SnsTopicResource result = factory.createSnsTopicResource(name);

    // Then
    assertSame(mockSnsTopicResource, result);
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void resolveDestination_withExistentTopic_returnsTopicArnFoundWhileListingTopic() throws Exception {
    // Arrange
    String topicArn = "arn:aws:sns:eu-west:123456789012:test";

    AmazonSNS sns = mock(AmazonSNS.class);
    when(sns.listTopics(new ListTopicsRequest(null))).thenReturn(new ListTopicsResult().withTopics(new Topic().withTopicArn(topicArn)));

    DynamicTopicDestinationResolver resolver = new DynamicTopicDestinationResolver(sns);

    // Act
    String resolvedDestinationName = resolver.resolveDestination("test");

    // Assert
    assertEquals(topicArn, resolvedDestinationName);
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void resolveDestination_withExistentTopicAndMarker_returnsTopicArnFoundWhileListingTopic() throws Exception {
    // Arrange

    AmazonSNS sns = mock(AmazonSNS.class);
    when(sns.listTopics(new ListTopicsRequest(null))).thenReturn(new ListTopicsResult().withNextToken("mark"));

    String topicArn = "arn:aws:sns:eu-west:123456789012:test";
    when(sns.listTopics(new ListTopicsRequest("mark"))).thenReturn(new ListTopicsResult().withTopics(new Topic().withTopicArn(topicArn)));

    DynamicTopicDestinationResolver resolver = new DynamicTopicDestinationResolver(sns);

    // Act
    String resolvedDestinationName = resolver.resolveDestination("test");

    // Assert
    assertEquals(topicArn, resolvedDestinationName);
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void resolveDestination_withResourceIdResolver_shouldCallIt() throws Exception {
    // Arrange
    String physicalTopicName = "arn:aws:sns:eu-west:123456789012:myTopic";
    String logicalTopicName = "myTopic";

    ResourceIdResolver resourceIdResolver = mock(ResourceIdResolver.class);
    when(resourceIdResolver.resolveToPhysicalResourceId(logicalTopicName)).thenReturn(physicalTopicName);

    AmazonSNS sns = mock(AmazonSNS.class);
    when(sns.listTopics(new ListTopicsRequest(null))).thenReturn(new ListTopicsResult().withTopics(new Topic().withTopicArn(physicalTopicName)));

    DynamicTopicDestinationResolver resolver = new DynamicTopicDestinationResolver(sns, resourceIdResolver);

    // Assert
    String resolvedDestinationName = resolver.resolveDestination(logicalTopicName);

    // Assert
    assertEquals(physicalTopicName, resolvedDestinationName);
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void send_validTextMessage_usesTopicChannel() throws Exception {
    // Arrange
    AmazonSNS amazonSns = mock(AmazonSNS.class);
    NotificationMessagingTemplate notificationMessagingTemplate = new NotificationMessagingTemplate(amazonSns);
    String physicalTopicName = "arn:aws:sns:eu-west:123456789012:test";
    when(amazonSns.listTopics(new ListTopicsRequest(null))).thenReturn(new ListTopicsResult().withTopics(new Topic().withTopicArn(physicalTopicName)));
    notificationMessagingTemplate.setDefaultDestinationName(physicalTopicName);

    // Act
    notificationMessagingTemplate.send(MessageBuilder.withPayload("Message content").build());

    // Assert
    verify(amazonSns).publish(new PublishRequest(physicalTopicName,
            "Message content", null).withMessageAttributes(isNotNull()));
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
public String getTopicARN() {
	try {
		if (topicANR.isEmpty()) {
			ListTopicsResult topics = snsClient.listTopics();
			for(Topic topic : topics.getTopics()) {
				String foundArn = topic.getTopicArn();
				if (foundArn.contains(TOPIC_NAME)) {
					logger.info("Found notification topic for SNS, ARN is: " + foundArn);
					topicANR =  foundArn;
					break;
				}
			}
		}
		if (topicANR.isEmpty()) {
			logger.info("Did not find notification topic for SNS, to receive updates create topic: " + TOPIC_NAME);
		}
		return topicANR;
	} 
	catch (AuthorizationErrorException authException) {
		logger.error("Did not send SNS notification. You may need to update permissions for user via IAM. Exception was " + authException);
		return "";
	}
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
private void createTopicIfNotExists() {
	for (Topic topic : client.listTopics().getTopics()) {
		if (topic.getTopicArn().contains(topicName)) {
			topicArn = topic.getTopicArn();
			break;
		}
	}
	if (topicArn == null) {
		CreateTopicRequest request = new CreateTopicRequest(topicName);
		CreateTopicResult result = client.createTopic(request);
		topicArn = result.getTopicArn();
		log.debug("Topic created, arn: " + topicArn);
	} else {
		log.debug("Topic already created: " + topicArn);
	}
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
/**
 * Returns ARN of topic where AutoScaling publishes system events
 *
 * @return
 */
private String getEssTopicArn() {
    Topic ess_topic = amazonSNS.listTopics().getTopics()
            .stream().filter(topic -> topic.getTopicArn().endsWith(ESS_TOPIC_NAME)).findFirst()
            .orElseThrow(() -> new ConfigurationException("Topic " + ESS_TOPIC_NAME + " does not exist."));
    return ess_topic.getTopicArn();
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Override
public Topic next() {
    if (cursor == topics.size() && result.getNextToken() != null) {
        result = sns.listTopics(result.getNextToken());
        topics = result.getTopics();
        cursor = 0;
    }
    try {
        return topics.get(cursor++);
    } catch (IndexOutOfBoundsException e) {
        throw new NoSuchElementException();
    }
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
private String topicArnForNameInTopics(final String name, final List<Topic> topics) {
    final String topicArnSuffix = ":" + name;
    for (final Topic topic : topics) {
        final String topicArn = topic.getTopicArn();
        final int pos = topicArn.lastIndexOf(topicArnSuffix);
        if (pos == -1) {
            continue;
        }
        final String actualName = topicArn.substring(pos + 1);
        if (actualName.equals(name)) {
            return topicArn;
        }
    }
    return null;
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
private String getTopicResourceName(String marker, String topicName) {
    ListTopicsResult listTopicsResult = this.amazonSns.listTopics(new ListTopicsRequest(marker));
    for (Topic topic : listTopicsResult.getTopics()) {
        AmazonResourceName resourceName = AmazonResourceName.fromString(topic.getTopicArn());
        if (resourceName.getResourceType().equals(topicName)) {
            return topic.getTopicArn();
        }
    }

    if (StringUtils.hasText(listTopicsResult.getNextToken())) {
        return getTopicResourceName(listTopicsResult.getNextToken(), topicName);
    } else {
        throw new IllegalArgumentException("No topic found for name :'" + topicName + "'");
    }
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void convertAndSend_withDestinationPayloadAndSubject_shouldSetSubject() throws Exception {
    // Arrange
    AmazonSNS amazonSns = mock(AmazonSNS.class);
    NotificationMessagingTemplate notificationMessagingTemplate = new NotificationMessagingTemplate(amazonSns);
    String physicalTopicName = "arn:aws:sns:eu-west:123456789012:test";
    when(amazonSns.listTopics(new ListTopicsRequest(null))).thenReturn(new ListTopicsResult().withTopics(new Topic().withTopicArn(physicalTopicName)));

    // Act
    notificationMessagingTemplate.sendNotification(physicalTopicName, "My message", "My subject");

    // Assert
    verify(amazonSns).publish(new PublishRequest(physicalTopicName, "My message", "My subject").withMessageAttributes(isNotNull()));
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Test
public void convertAndSend_withPayloadAndSubject_shouldSetSubject() throws Exception {
    // Arrange
    AmazonSNS amazonSns = mock(AmazonSNS.class);
    NotificationMessagingTemplate notificationMessagingTemplate = new NotificationMessagingTemplate(amazonSns);
    String physicalTopicName = "arn:aws:sns:eu-west:123456789012:test";
    when(amazonSns.listTopics(new ListTopicsRequest(null))).thenReturn(new ListTopicsResult().withTopics(new Topic().withTopicArn(physicalTopicName)));
    notificationMessagingTemplate.setDefaultDestinationName(physicalTopicName);

    // Act
    notificationMessagingTemplate.sendNotification("My message", "My subject");

    // Assert
    verify(amazonSns).publish(new PublishRequest(physicalTopicName, "My message", "My subject").withMessageAttributes(isNotNull()));
}
 

import com.amazonaws.services.sns.model.Topic; //导入依赖的package包/类
@Override
public Iterator<Topic> iterator() {
    return new Itr(sns);
}