Java ListTopicsResult.getTopics方法代码示例

import com.amazonaws.services.sns.model.ListTopicsResult; //导入方法依赖的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.ListTopicsResult; //导入方法依赖的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.ListTopicsResult; //导入方法依赖的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.ListTopicsResult; //导入方法依赖的package包/类
public static String getTopicArn( final AmazonSNSClient sns, final String queueName, final boolean createOnMissing )
    throws Exception {

    if ( logger.isTraceEnabled() ) {
        logger.trace( "Looking up Topic ARN: {}", queueName );
    }

    ListTopicsResult listTopicsResult = sns.listTopics();
    String topicArn = null;

    for ( Topic topic : listTopicsResult.getTopics() ) {
        String arn = topic.getTopicArn();

        if ( queueName.equals( arn.substring( arn.lastIndexOf( ':' ) ) ) ) {
            topicArn = arn;

            if (logger.isTraceEnabled()) {
                logger.trace( "Found existing topic arn=[{}] for queue=[{}]", topicArn, queueName );
            }
        }
    }

    if ( topicArn == null && createOnMissing ) {
        if (logger.isTraceEnabled()) {
            logger.trace("Creating topic for queue=[{}]...", queueName);
        }

        CreateTopicResult createTopicResult = sns.createTopic( queueName );
        topicArn = createTopicResult.getTopicArn();

        if (logger.isTraceEnabled()) {
            logger.trace("Successfully created topic with name {} and arn {}", queueName, topicArn);
        }
    }
    else {
        logger.error( "Error looking up topic ARN for queue=[{}] and createOnMissing=[{}]", queueName,
            createOnMissing );
    }

    if ( logger.isTraceEnabled() ) {
        logger.trace( "Returning Topic ARN=[{}] for Queue=[{}]", topicArn, queueName );
    }


    return topicArn;
}