Use Subscribe
with an Amazon SDK or CLI
The following code examples show how to use Subscribe
.
Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code examples:
- .NET
-
- Amazon SDK for .NET
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
/// <summary> /// Creates a new subscription to a topic. /// </summary> /// <param name="client">The initialized Amazon SNS client object, used /// to create an Amazon SNS subscription.</param> /// <param name="topicArn">The ARN of the topic to subscribe to.</param> /// <returns>A SubscribeResponse object which includes the subscription /// ARN for the new subscription.</returns> public static async Task<SubscribeResponse> TopicSubscribeAsync( IAmazonSimpleNotificationService client, string topicArn) { SubscribeRequest request = new SubscribeRequest() { TopicArn = topicArn, ReturnSubscriptionArn = true, Protocol = "email", Endpoint = "recipient@example.com", }; var response = await client.SubscribeAsync(request); return response; }
Subscribe a queue to a topic with optional filters.
/// <summary> /// Subscribe a queue to a topic with optional filters. /// </summary> /// <param name="topicArn">The ARN of the topic.</param> /// <param name="useFifoTopic">The optional filtering policy for the subscription.</param> /// <param name="queueArn">The ARN of the queue.</param> /// <returns>The ARN of the new subscription.</returns> public async Task<string> SubscribeTopicWithFilter(string topicArn, string? filterPolicy, string queueArn) { var subscribeRequest = new SubscribeRequest() { TopicArn = topicArn, Protocol = "sqs", Endpoint = queueArn }; if (!string.IsNullOrEmpty(filterPolicy)) { subscribeRequest.Attributes = new Dictionary<string, string> { { "FilterPolicy", filterPolicy } }; } var subscribeResponse = await _amazonSNSClient.SubscribeAsync(subscribeRequest); return subscribeResponse.SubscriptionArn; }
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For API details, see Subscribe in Amazon SDK for .NET API Reference.
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- C++
-
- SDK for C++
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
//! Subscribe to an Amazon Simple Notification Service (Amazon SNS) topic with delivery to an email address. /*! \param topicARN: An SNS topic Amazon Resource Name (ARN). \param emailAddress: An email address. \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ bool AwsDoc::SNS::subscribeEmail(const Aws::String &topicARN, const Aws::String &emailAddress, const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::SNS::Model::SubscribeRequest request; request.SetTopicArn(topicARN); request.SetProtocol("email"); request.SetEndpoint(emailAddress); const Aws::SNS::Model::SubscribeOutcome outcome = snsClient.Subscribe(request); if (outcome.IsSuccess()) { std::cout << "Subscribed successfully." << std::endl; std::cout << "Subscription ARN '" << outcome.GetResult().GetSubscriptionArn() << "'." << std::endl; } else { std::cerr << "Error while subscribing " << outcome.GetError().GetMessage() << std::endl; } return outcome.IsSuccess(); }
Subscribe a mobile application to a topic.
//! Subscribe to an Amazon Simple Notification Service (Amazon SNS) topic with delivery to a mobile app. /*! \param topicARN: The Amazon Resource Name (ARN) for an Amazon SNS topic. \param endpointARN: The ARN for a mobile app or device endpoint. \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ bool AwsDoc::SNS::subscribeApp(const Aws::String &topicARN, const Aws::String &endpointARN, const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::SNS::Model::SubscribeRequest request; request.SetTopicArn(topicARN); request.SetProtocol("application"); request.SetEndpoint(endpointARN); const Aws::SNS::Model::SubscribeOutcome outcome = snsClient.Subscribe(request); if (outcome.IsSuccess()) { std::cout << "Subscribed successfully." << std::endl; std::cout << "Subscription ARN '" << outcome.GetResult().GetSubscriptionArn() << "'." << std::endl; } else { std::cerr << "Error while subscribing " << outcome.GetError().GetMessage() << std::endl; } return outcome.IsSuccess(); }
Subscribe a Lambda function to a topic.
//! Subscribe to an Amazon Simple Notification Service (Amazon SNS) topic with delivery to an AWS Lambda function. /*! \param topicARN: The Amazon Resource Name (ARN) for an Amazon SNS topic. \param lambdaFunctionARN: The ARN for an AWS Lambda function. \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ bool AwsDoc::SNS::subscribeLambda(const Aws::String &topicARN, const Aws::String &lambdaFunctionARN, const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::SNS::Model::SubscribeRequest request; request.SetTopicArn(topicARN); request.SetProtocol("lambda"); request.SetEndpoint(lambdaFunctionARN); const Aws::SNS::Model::SubscribeOutcome outcome = snsClient.Subscribe(request); if (outcome.IsSuccess()) { std::cout << "Subscribed successfully." << std::endl; std::cout << "Subscription ARN '" << outcome.GetResult().GetSubscriptionArn() << "'." << std::endl; } else { std::cerr << "Error while subscribing " << outcome.GetError().GetMessage() << std::endl; } return outcome.IsSuccess(); }
Subscribe an SQS queue to a topic.
Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region (overrides config file). // clientConfig.region = "us-east-1"; Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::SNS::Model::SubscribeRequest request; request.SetTopicArn(topicARN); request.SetProtocol("sqs"); request.SetEndpoint(queueARN); Aws::SNS::Model::SubscribeOutcome outcome = snsClient.Subscribe(request); if (outcome.IsSuccess()) { Aws::String subscriptionARN = outcome.GetResult().GetSubscriptionArn(); std::cout << "The queue '" << queueName << "' has been subscribed to the topic '" << "'" << topicName << "'" << std::endl; std::cout << "with the subscription ARN '" << subscriptionARN << "." << std::endl; subscriptionARNS.push_back(subscriptionARN); } else { std::cerr << "Error with TopicsAndQueues::Subscribe. " << outcome.GetError().GetMessage() << std::endl; cleanUp(topicARN, queueURLS, subscriptionARNS, snsClient, sqsClient); return false; }
Subscribe with a filter to a topic.
static const Aws::String TONE_ATTRIBUTE("tone"); static const Aws::Vector<Aws::String> TONES = {"cheerful", "funny", "serious", "sincere"}; Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region (overrides config file). // clientConfig.region = "us-east-1"; Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::SNS::Model::SubscribeRequest request; request.SetTopicArn(topicARN); request.SetProtocol("sqs"); request.SetEndpoint(queueARN); if (isFifoTopic) { if (first) { std::cout << "Subscriptions to a FIFO topic can have filters." << std::endl; std::cout << "If you add a filter to this subscription, then only the filtered messages " << "will be received in the queue." << std::endl; std::cout << "For information about message filtering, " << "see https://docs.aws.amazon.com/sns/latest/dg/sns-message-filtering.html" << std::endl; std::cout << "For this example, you can filter messages by a \"" << TONE_ATTRIBUTE << "\" attribute." << std::endl; } std::ostringstream ostringstream; ostringstream << "Filter messages for \"" << queueName << "\"'s subscription to the topic \"" << topicName << "\"? (y/n)"; // Add filter if user answers yes. if (askYesNoQuestion(ostringstream.str())) { Aws::String jsonPolicy = getFilterPolicyFromUser(); if (!jsonPolicy.empty()) { filteringMessages = true; std::cout << "This is the filter policy for this subscription." << std::endl; std::cout << jsonPolicy << std::endl; request.AddAttributes("FilterPolicy", jsonPolicy); } else { std::cout << "Because you did not select any attributes, no filter " << "will be added to this subscription." << std::endl; } } } // if (isFifoTopic) Aws::SNS::Model::SubscribeOutcome outcome = snsClient.Subscribe(request); if (outcome.IsSuccess()) { Aws::String subscriptionARN = outcome.GetResult().GetSubscriptionArn(); std::cout << "The queue '" << queueName << "' has been subscribed to the topic '" << "'" << topicName << "'" << std::endl; std::cout << "with the subscription ARN '" << subscriptionARN << "." << std::endl; subscriptionARNS.push_back(subscriptionARN); } else { std::cerr << "Error with TopicsAndQueues::Subscribe. " << outcome.GetError().GetMessage() << std::endl; cleanUp(topicARN, queueURLS, subscriptionARNS, snsClient, sqsClient); return false; } //! Routine that lets the user select attributes for a subscription filter policy. /*! \sa getFilterPolicyFromUser() \return Aws::String: The filter policy as JSON. */ Aws::String AwsDoc::TopicsAndQueues::getFilterPolicyFromUser() { std::cout << "You can filter messages by one or more of the following \"" << TONE_ATTRIBUTE << "\" attributes." << std::endl; std::vector<Aws::String> filterSelections; int selection; do { for (size_t j = 0; j < TONES.size(); ++j) { std::cout << " " << (j + 1) << ". " << TONES[j] << std::endl; } selection = askQuestionForIntRange( "Enter a number (or enter zero to stop adding more). ", 0, static_cast<int>(TONES.size())); if (selection != 0) { const Aws::String &selectedTone(TONES[selection - 1]); // Add the tone to the selection if it is not already added. if (std::find(filterSelections.begin(), filterSelections.end(), selectedTone) == filterSelections.end()) { filterSelections.push_back(selectedTone); } } } while (selection != 0); Aws::String result; if (!filterSelections.empty()) { std::ostringstream jsonPolicyStream; jsonPolicyStream << "{ \"" << TONE_ATTRIBUTE << "\": ["; for (size_t j = 0; j < filterSelections.size(); ++j) { jsonPolicyStream << "\"" << filterSelections[j] << "\""; if (j < filterSelections.size() - 1) { jsonPolicyStream << ","; } } jsonPolicyStream << "] }"; result = jsonPolicyStream.str(); } return result; }
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For API details, see Subscribe in Amazon SDK for C++ API Reference.
-
- CLI
-
- Amazon CLI
-
To subscribe to a topic
The following
subscribe
command subscribes an email address to the specified topic.aws sns subscribe \ --topic-arn
arn:aws:sns:us-west-2:123456789012:my-topic
\ --protocolemail
\ --notification-endpointmy-email@example.com
Output:
{ "SubscriptionArn": "pending confirmation" }
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For API details, see Subscribe
in Amazon CLI Command Reference.
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- Go
-
- SDK for Go V2
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe a queue to a topic with optional filters.
import ( "context" "encoding/json" "log" "github.com/aws/aws-sdk-go-v2/aws" "github.com/aws/aws-sdk-go-v2/service/sns" "github.com/aws/aws-sdk-go-v2/service/sns/types" ) // SnsActions encapsulates the Amazon Simple Notification Service (Amazon SNS) actions // used in the examples. type SnsActions struct { SnsClient *sns.Client } // SubscribeQueue subscribes an Amazon Simple Queue Service (Amazon SQS) queue to an // Amazon SNS topic. When filterMap is not nil, it is used to specify a filter policy // so that messages are only sent to the queue when the message has the specified attributes. func (actor SnsActions) SubscribeQueue(ctx context.Context, topicArn string, queueArn string, filterMap map[string][]string) (string, error) { var subscriptionArn string var attributes map[string]string if filterMap != nil { filterBytes, err := json.Marshal(filterMap) if err != nil { log.Printf("Couldn't create filter policy, here's why: %v\n", err) return "", err } attributes = map[string]string{"FilterPolicy": string(filterBytes)} } output, err := actor.SnsClient.Subscribe(ctx, &sns.SubscribeInput{ Protocol: aws.String("sqs"), TopicArn: aws.String(topicArn), Attributes: attributes, Endpoint: aws.String(queueArn), ReturnSubscriptionArn: true, }) if err != nil { log.Printf("Couldn't susbscribe queue %v to topic %v. Here's why: %v\n", queueArn, topicArn, err) } else { subscriptionArn = *output.SubscriptionArn } return subscriptionArn, err }
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For API details, see Subscribe
in Amazon SDK for Go API Reference.
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- Java
-
- SDK for Java 2.x
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeEmail { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <email> Where: topicArn - The ARN of the topic to subscribe. email - The email address to use. """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String email = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); subEmail(snsClient, topicArn, email); snsClient.close(); } public static void subEmail(SnsClient snsClient, String topicArn, String email) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("email") .endpoint(email) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("Subscription ARN: " + result.subscriptionArn() + "\n\n Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
Subscribe an HTTP endpoint to a topic.
import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeHTTPS { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <url> Where: topicArn - The ARN of the topic to subscribe. url - The HTTPS endpoint that you want to receive notifications. """; if (args.length < 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String url = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); subHTTPS(snsClient, topicArn, url); snsClient.close(); } public static void subHTTPS(SnsClient snsClient, String topicArn, String url) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("https") .endpoint(url) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("Subscription ARN is " + result.subscriptionArn() + "\n\n Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
Subscribe a Lambda function to a topic.
import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeLambda { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <lambdaArn> Where: topicArn - The ARN of the topic to subscribe. lambdaArn - The ARN of an AWS Lambda function. """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String lambdaArn = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); String arnValue = subLambda(snsClient, topicArn, lambdaArn); System.out.println("Subscription ARN: " + arnValue); snsClient.close(); } public static String subLambda(SnsClient snsClient, String topicArn, String lambdaArn) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("lambda") .endpoint(lambdaArn) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); return result.subscriptionArn(); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } }
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For API details, see Subscribe in Amazon SDK for Java 2.x API Reference.
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- JavaScript
-
- SDK for JavaScript (v3)
-
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 { SubscribeCommand } from "@aws-sdk/client-sns"; import { snsClient } from "../libs/snsClient.js"; /** * @param {string} topicArn - The ARN of the topic for which you wish to confirm a subscription. * @param {string} emailAddress - The email address that is subscribed to the topic. */ export const subscribeEmail = async ( topicArn = "TOPIC_ARN", emailAddress = "usern@me.com", ) => { const response = await snsClient.send( new SubscribeCommand({ Protocol: "email", TopicArn: topicArn, Endpoint: emailAddress, }), ); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: 'c8e35bcd-b3c0-5940-9f66-06f6fcc108f0', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // SubscriptionArn: 'pending confirmation' // } };
Subscribe a mobile application to a topic.
import { SubscribeCommand } from "@aws-sdk/client-sns"; import { snsClient } from "../libs/snsClient.js"; /** * @param {string} topicArn - The ARN of the topic the subscriber is subscribing to. * @param {string} endpoint - The Endpoint ARN of an application. This endpoint is created * when an application registers for notifications. */ export const subscribeApp = async ( topicArn = "TOPIC_ARN", endpoint = "ENDPOINT", ) => { const response = await snsClient.send( new SubscribeCommand({ Protocol: "application", TopicArn: topicArn, Endpoint: endpoint, }), ); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: 'c8e35bcd-b3c0-5940-9f66-06f6fcc108f0', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // SubscriptionArn: 'pending confirmation' // } return response; };
Subscribe a Lambda function to a topic.
import { SubscribeCommand } from "@aws-sdk/client-sns"; import { snsClient } from "../libs/snsClient.js"; /** * @param {string} topicArn - The ARN of the topic the subscriber is subscribing to. * @param {string} endpoint - The Endpoint ARN of and AWS Lambda function. */ export const subscribeLambda = async ( topicArn = "TOPIC_ARN", endpoint = "ENDPOINT", ) => { const response = await snsClient.send( new SubscribeCommand({ Protocol: "lambda", TopicArn: topicArn, Endpoint: endpoint, }), ); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: 'c8e35bcd-b3c0-5940-9f66-06f6fcc108f0', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // SubscriptionArn: 'pending confirmation' // } return response; };
Subscribe an SQS queue to a topic.
import { SubscribeCommand, SNSClient } from "@aws-sdk/client-sns"; const client = new SNSClient({}); export const subscribeQueue = async ( topicArn = "TOPIC_ARN", queueArn = "QUEUE_ARN", ) => { const command = new SubscribeCommand({ TopicArn: topicArn, Protocol: "sqs", Endpoint: queueArn, }); const response = await client.send(command); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: '931e13d9-5e2b-543f-8781-4e9e494c5ff2', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // SubscriptionArn: 'arn:aws:sns:us-east-1:xxxxxxxxxxxx:subscribe-queue-test-430895:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' // } return response; };
Subscribe with a filter to a topic.
import { SubscribeCommand, SNSClient } from "@aws-sdk/client-sns"; const client = new SNSClient({}); export const subscribeQueueFiltered = async ( topicArn = "TOPIC_ARN", queueArn = "QUEUE_ARN", ) => { const command = new SubscribeCommand({ TopicArn: topicArn, Protocol: "sqs", Endpoint: queueArn, Attributes: { // This subscription will only receive messages with the 'event' attribute set to 'order_placed'. FilterPolicyScope: "MessageAttributes", FilterPolicy: JSON.stringify({ event: ["order_placed"], }), }, }); const response = await client.send(command); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: '931e13d9-5e2b-543f-8781-4e9e494c5ff2', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // SubscriptionArn: 'arn:aws:sns:us-east-1:xxxxxxxxxxxx:subscribe-queue-test-430895:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' // } return response; };
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For more information, see Amazon SDK for JavaScript Developer Guide.
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For API details, see Subscribe in Amazon SDK for JavaScript API Reference.
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- Kotlin
-
- SDK for Kotlin
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
suspend fun subEmail( topicArnVal: String, email: String, ): String { val request = SubscribeRequest { protocol = "email" endpoint = email returnSubscriptionArn = true topicArn = topicArnVal } SnsClient { region = "us-east-1" }.use { snsClient -> val result = snsClient.subscribe(request) return result.subscriptionArn.toString() } }
Subscribe a Lambda function to a topic.
suspend fun subLambda( topicArnVal: String?, lambdaArn: String?, ) { val request = SubscribeRequest { protocol = "lambda" endpoint = lambdaArn returnSubscriptionArn = true topicArn = topicArnVal } SnsClient { region = "us-east-1" }.use { snsClient -> val result = snsClient.subscribe(request) println(" The subscription Arn is ${result.subscriptionArn}") } }
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For API details, see Subscribe
in Amazon SDK for Kotlin API reference.
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- PHP
-
- SDK for PHP
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
require 'vendor/autoload.php'; use Aws\Exception\AwsException; use Aws\Sns\SnsClient; /** * Prepares to subscribe an endpoint by sending the endpoint a confirmation message. * * 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' ]); $protocol = 'email'; $endpoint = 'sample@example.com'; $topic = 'arn:aws:sns:us-east-1:111122223333:MyTopic'; try { $result = $SnSclient->subscribe([ 'Protocol' => $protocol, 'Endpoint' => $endpoint, 'ReturnSubscriptionArn' => true, 'TopicArn' => $topic, ]); var_dump($result); } catch (AwsException $e) { // output error message if fails error_log($e->getMessage()); }
Subscribe an HTTP endpoint to a topic.
require 'vendor/autoload.php'; use Aws\Exception\AwsException; use Aws\Sns\SnsClient; /** * Prepares to subscribe an endpoint by sending the endpoint a confirmation message. * * 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' ]); $protocol = 'https'; $endpoint = 'https://'; $topic = 'arn:aws:sns:us-east-1:111122223333:MyTopic'; try { $result = $SnSclient->subscribe([ 'Protocol' => $protocol, 'Endpoint' => $endpoint, 'ReturnSubscriptionArn' => true, 'TopicArn' => $topic, ]); var_dump($result); } catch (AwsException $e) { // output error message if fails error_log($e->getMessage()); }
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For API details, see Subscribe in Amazon SDK for PHP API Reference.
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- Python
-
- SDK for Python (Boto3)
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
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 @staticmethod def subscribe(topic, protocol, endpoint): """ Subscribes an endpoint to the topic. Some endpoint types, such as email, must be confirmed before their subscriptions are active. When a subscription is not confirmed, its Amazon Resource Number (ARN) is set to 'PendingConfirmation'. :param topic: The topic to subscribe to. :param protocol: The protocol of the endpoint, such as 'sms' or 'email'. :param endpoint: The endpoint that receives messages, such as a phone number (in E.164 format) for SMS messages, or an email address for email messages. :return: The newly added subscription. """ try: subscription = topic.subscribe( Protocol=protocol, Endpoint=endpoint, ReturnSubscriptionArn=True ) logger.info("Subscribed %s %s to topic %s.", protocol, endpoint, topic.arn) except ClientError: logger.exception( "Couldn't subscribe %s %s to topic %s.", protocol, endpoint, topic.arn ) raise else: return subscription
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For API details, see Subscribe in Amazon SDK for Python (Boto3) API Reference.
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- Ruby
-
- SDK for Ruby
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
require 'aws-sdk-sns' require 'logger' # Represents a service for creating subscriptions in Amazon Simple Notification Service (SNS) class SubscriptionService # Initializes the SubscriptionService with an SNS client # # @param sns_client [Aws::SNS::Client] The SNS client def initialize(sns_client) @sns_client = sns_client @logger = Logger.new($stdout) end # Attempts to create a subscription to a topic # # @param topic_arn [String] The ARN of the SNS topic # @param protocol [String] The subscription protocol (e.g., email) # @param endpoint [String] The endpoint that receives the notifications (email address) # @return [Boolean] true if subscription was successfully created, false otherwise def create_subscription(topic_arn, protocol, endpoint) @sns_client.subscribe(topic_arn: topic_arn, protocol: protocol, endpoint: endpoint) @logger.info('Subscription created successfully.') true rescue Aws::SNS::Errors::ServiceError => e @logger.error("Error while creating the subscription: #{e.message}") false end end # Main execution if the script is run directly if $PROGRAM_NAME == __FILE__ protocol = 'email' endpoint = 'EMAIL_ADDRESS' # Should be replaced with a real email address topic_arn = 'TOPIC_ARN' # Should be replaced with a real topic ARN sns_client = Aws::SNS::Client.new subscription_service = SubscriptionService.new(sns_client) @logger.info('Creating the subscription.') unless subscription_service.create_subscription(topic_arn, protocol, endpoint) @logger.error('Subscription creation failed. Stopping program.') exit 1 end end
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For more information, see Amazon SDK for Ruby Developer Guide.
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For API details, see Subscribe in Amazon SDK for Ruby API Reference.
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- Rust
-
- SDK for Rust
-
Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository
. Subscribe an email address to a topic.
async fn subscribe_and_publish( client: &Client, topic_arn: &str, email_address: &str, ) -> Result<(), Error> { println!("Receiving on topic with ARN: `{}`", topic_arn); let rsp = client .subscribe() .topic_arn(topic_arn) .protocol("email") .endpoint(email_address) .send() .await?; println!("Added a subscription: {:?}", rsp); let rsp = client .publish() .topic_arn(topic_arn) .message("hello sns!") .send() .await?; println!("Published message: {:?}", rsp); Ok(()) }
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For API details, see Subscribe
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
. Subscribe an email address to a topic.
TRY. oo_result = lo_sns->subscribe( "oo_result is returned for testing purposes." iv_topicarn = iv_topic_arn iv_protocol = 'email' iv_endpoint = iv_email_address iv_returnsubscriptionarn = abap_true ). MESSAGE 'Email address subscribed to SNS topic.' TYPE 'I'. CATCH /aws1/cx_snsnotfoundexception. MESSAGE 'Topic does not exist.' TYPE 'E'. CATCH /aws1/cx_snssubscriptionlmte00. MESSAGE 'Unable to create subscriptions. You have reached the maximum number of subscriptions allowed.' TYPE 'E'. ENDTRY.
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For API details, see Subscribe 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.