List Amazon SNS topics using an Amazon SDK
The following code examples show how to list Amazon SNS topics.
- .NET
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- Amazon SDK for .NET
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. using System; using System.Collections.Generic; using System.Threading.Tasks; using Amazon.SimpleNotificationService; using Amazon.SimpleNotificationService.Model; /// <summary> /// Lists the Amazon Simple Notification Service (Amazon SNS) /// topics for the current account. /// </summary> public class ListSNSTopics { public static async Task Main() { IAmazonSimpleNotificationService client = new AmazonSimpleNotificationServiceClient(); await GetTopicListAsync(client); } /// <summary> /// Retrieves the list of Amazon SNS topics in groups of up to 100 /// topics. /// </summary> /// <param name="client">The initialized Amazon SNS client object used /// to retrieve the list of topics.</param> public static async Task GetTopicListAsync(IAmazonSimpleNotificationService client) { // If there are more than 100 Amazon SNS topics, the call to // ListTopicsAsync will return a value to pass to the // method to retrieve the next 100 (or less) topics. string nextToken = string.Empty; do { var response = await client.ListTopicsAsync(nextToken); DisplayTopicsList(response.Topics); nextToken = response.NextToken; } while (!string.IsNullOrEmpty(nextToken)); } /// <summary> /// Displays the list of Amazon SNS Topic ARNs. /// </summary> /// <param name="topicList">The list of Topic ARNs.</param> public static void DisplayTopicsList(List<Topic> topicList) { foreach (var topic in topicList) { Console.WriteLine($"{topic.TopicArn}"); } } }
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For API details, see ListTopics in Amazon SDK for .NET API Reference.
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- C++
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- SDK for C++
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. //! Retrieve a list of Amazon Simple Notification Service (Amazon SNS) topics. /*! \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ bool AwsDoc::SNS::listTopics(const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::String nextToken; // Next token is used to handle a paginated response. bool result = true; do { Aws::SNS::Model::ListTopicsRequest request; if (!nextToken.empty()) { request.SetNextToken(nextToken); } const Aws::SNS::Model::ListTopicsOutcome outcome = snsClient.ListTopics( request); if (outcome.IsSuccess()) { std::cout << "Topics list:" << std::endl; for (auto const &topic: outcome.GetResult().GetTopics()) { std::cout << " * " << topic.GetTopicArn() << std::endl; } } else { std::cerr << "Error listing topics " << outcome.GetError().GetMessage() << std::endl; result = false; break; } nextToken = outcome.GetResult().GetNextToken(); } while (!nextToken.empty()); return result; }
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For API details, see ListTopics in Amazon SDK for C++ API Reference.
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- Go
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- SDK for Go V2
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. package main import ( "context" "fmt" "github.com/aws/aws-sdk-go-v2/config" "github.com/aws/aws-sdk-go-v2/service/sns" ) // SNSListTopicsAPI defines the interface for the ListTopics function. // We use this interface to test the function using a mocked service. type SNSListTopicsAPI interface { ListTopics(ctx context.Context, params *sns.ListTopicsInput, optFns ...func(*sns.Options)) (*sns.ListTopicsOutput, error) } // GetTopics retrieves information about the Amazon Simple Notification Service (Amazon SNS) topics // Inputs: // c is the context of the method call, which includes the Region // api is the interface that defines the method call // input defines the input arguments to the service call. // Output: // If success, a ListTopicsOutput object containing the result of the service call and nil // Otherwise, nil and an error from the call to ListTopics func GetTopics(c context.Context, api SNSListTopicsAPI, input *sns.ListTopicsInput) (*sns.ListTopicsOutput, error) { return api.ListTopics(c, input) } func main() { cfg, err := config.LoadDefaultConfig(context.TODO()) if err != nil { panic("configuration error, " + err.Error()) } client := sns.NewFromConfig(cfg) input := &sns.ListTopicsInput{} results, err := GetTopics(context.TODO(), client, input) if err != nil { fmt.Println("Got an error retrieving information about the SNS topics:") fmt.Println(err) return } for _, t := range results.Topics { fmt.Println(*t.TopicArn) } }
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For API details, see ListTopics
in Amazon SDK for Go API Reference.
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- Java
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- SDK for Java 2.x
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. public static void listSNSTopics(SnsClient snsClient) { try { ListTopicsRequest request = ListTopicsRequest.builder() .build(); ListTopicsResponse result = snsClient.listTopics(request); System.out.println("Status was " + result.sdkHttpResponse().statusCode() + "\n\nTopics\n\n" + result.topics()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } }
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For API details, see ListTopics in Amazon SDK for Java 2.x API Reference.
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- JavaScript
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- SDK for JavaScript (v3)
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Create the client in a separate module and export it.
import { SNSClient } from "@aws-sdk/client-sns"; // The AWS Region can be provided here using the `region` property. If you leave it blank // the SDK will default to the region set in your AWS config. export const snsClient = new SNSClient({});
Import the SDK and client modules and call the API.
import { ListTopicsCommand } from "@aws-sdk/client-sns"; import { snsClient } from "../libs/snsClient.js"; export const listTopics = async () => { const response = await snsClient.send(new ListTopicsCommand({})); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: '936bc5ad-83ca-53c2-b0b7-9891167b909e', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // Topics: [ { TopicArn: 'arn:aws:sns:us-east-1:xxxxxxxxxxxx:mytopic' } ] // } return response; };
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For more information, see Amazon SDK for JavaScript Developer Guide.
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For API details, see ListTopics in Amazon SDK for JavaScript API Reference.
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- Kotlin
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- SDK for Kotlin
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Note
This is prerelease documentation for a feature in preview release. It is subject to change.
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. suspend fun listSNSTopics() { SnsClient { region = "us-east-1" }.use { snsClient -> val response = snsClient.listTopics(ListTopicsRequest { }) response.topics?.forEach { topic -> println("The topic ARN is ${topic.topicArn}") } } }
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For API details, see ListTopics
in Amazon SDK for Kotlin API reference.
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- PHP
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- SDK for PHP
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. require 'vendor/autoload.php'; use Aws\Sns\SnsClient; use Aws\Exception\AwsException; /** * Returns a list of the requester's topics from your AWS SNS account in the region specified. * * This code expects that you have AWS credentials set up per: * https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/guide_credentials.html */ $SnSclient = new SnsClient([ 'profile' => 'default', 'region' => 'us-east-1', 'version' => '2010-03-31' ]); try { $result = $SnSclient->listTopics([ ]); var_dump($result); } catch (AwsException $e) { // output error message if fails error_log($e->getMessage()); }
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For API details, see ListTopics in Amazon SDK for PHP API Reference.
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- Python
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- SDK for Python (Boto3)
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. class SnsWrapper: """Encapsulates Amazon SNS topic and subscription functions.""" def __init__(self, sns_resource): """ :param sns_resource: A Boto3 Amazon SNS resource. """ self.sns_resource = sns_resource def list_topics(self): """ Lists topics for the current account. :return: An iterator that yields the topics. """ try: topics_iter = self.sns_resource.topics.all() logger.info("Got topics.") except ClientError: logger.exception("Couldn't get topics.") raise else: return topics_iter
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For API details, see ListTopics in Amazon SDK for Python (Boto3) API Reference.
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- Ruby
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- SDK for Ruby
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. require "aws-sdk-sns" # v2: require 'aws-sdk' def list_topics?(sns_client) sns_client.topics.each do |topic| puts topic.arn rescue StandardError => e puts "Error while listing the topics: #{e.message}" end end def run_me region = "REGION" sns_client = Aws::SNS::Resource.new(region: region) puts "Listing the topics." if list_topics?(sns_client) else puts "The bucket was not created. Stopping program." exit 1 end end run_me if $PROGRAM_NAME == __FILE__
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For more information, see Amazon SDK for Ruby Developer Guide.
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For API details, see ListTopics in Amazon SDK for Ruby API Reference.
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- Rust
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- SDK for Rust
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Note
This documentation is for an SDK in preview release. The SDK is subject to change and should not be used in production.
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. async fn show_topics(client: &Client) -> Result<(), Error> { let resp = client.list_topics().send().await?; println!("Topic ARNs:"); for topic in resp.topics().unwrap_or_default() { println!("{}", topic.topic_arn().unwrap_or_default()); } Ok(()) }
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For API details, see ListTopics
in Amazon SDK for Rust API reference.
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- SAP ABAP
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- SDK for SAP ABAP
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. TRY. oo_result = lo_sns->listtopics( ). " oo_result is returned for testing purposes. " DATA(lt_topics) = oo_result->get_topics( ). MESSAGE 'Retrieved list of topics.' TYPE 'I'. CATCH /aws1/cx_rt_generic. MESSAGE 'Unable to list topics.' TYPE 'E'. ENDTRY.
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For API details, see ListTopics in Amazon SDK for SAP ABAP API reference.
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For a complete list of Amazon SDK developer guides and code examples, see Using Amazon SNS with an Amazon SDK. This topic also includes information about getting started and details about previous SDK versions.