There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Use `DescribeSubscriptionFilters` with an AWS SDK
<a name="cloudwatch-logs_example_cloudwatch-logs_DescribeSubscriptionFilters_section"></a>

The following code examples show how to use `DescribeSubscriptionFilters`.

------
#### [ C\$1\$1 ]

**SDK for C\$1\$1**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/cloudwatch-logs#code-examples). 
Include the required files.  

```
#include <aws/core/Aws.h>
#include <aws/core/utils/Outcome.h>
#include <aws/logs/CloudWatchLogsClient.h>
#include <aws/logs/model/DescribeSubscriptionFiltersRequest.h>
#include <aws/logs/model/DescribeSubscriptionFiltersResult.h>
#include <iostream>
#include <iomanip>
```
List the subscription filters.  

```
        Aws::CloudWatchLogs::CloudWatchLogsClient cwl;
        Aws::CloudWatchLogs::Model::DescribeSubscriptionFiltersRequest request;
        request.SetLogGroupName(log_group);
        request.SetLimit(1);

        bool done = false;
        bool header = false;
        while (!done) {
            auto outcome = cwl.DescribeSubscriptionFilters(
                    request);
            if (!outcome.IsSuccess()) {
                std::cout << "Failed to describe CloudWatch subscription filters "
                    << "for log group " << log_group << ": " <<
                    outcome.GetError().GetMessage() << std::endl;
                break;
            }

            if (!header) {
                std::cout << std::left << std::setw(32) << "Name" <<
                    std::setw(64) << "FilterPattern" << std::setw(64) <<
                    "DestinationArn" << std::endl;
                header = true;
            }

            const auto &filters = outcome.GetResult().GetSubscriptionFilters();
            for (const auto &filter : filters) {
                std::cout << std::left << std::setw(32) <<
                    filter.GetFilterName() << std::setw(64) <<
                    filter.GetFilterPattern() << std::setw(64) <<
                    filter.GetDestinationArn() << std::endl;
            }

            const auto &next_token = outcome.GetResult().GetNextToken();
            request.SetNextToken(next_token);
            done = next_token.empty();
        }
```
+  For API details, see [DescribeSubscriptionFilters](https://docs.aws.amazon.com/goto/SdkForCpp/logs-2014-03-28/DescribeSubscriptionFilters) in *AWS SDK for C\$1\$1 API Reference*. 

------
#### [ Java ]

**SDK for Java 2.x**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cloudwatch-logs#code-examples). 

```
import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatchlogs.CloudWatchLogsClient;
import software.amazon.awssdk.services.cloudwatchlogs.model.DescribeSubscriptionFiltersRequest;
import software.amazon.awssdk.services.cloudwatchlogs.model.DescribeSubscriptionFiltersResponse;
import software.amazon.awssdk.services.cloudwatchlogs.model.SubscriptionFilter;

/**
 * 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 DescribeSubscriptionFilters {
    public static void main(String[] args) {

        final String usage = """

                Usage:
                  <logGroup>

                Where:
                  logGroup - A log group name (for example, myloggroup).
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String logGroup = args[0];
        CloudWatchLogsClient logs = CloudWatchLogsClient.builder()
                .credentialsProvider(ProfileCredentialsProvider.create())
                .build();

        describeFilters(logs, logGroup);
        logs.close();
    }

    public static void describeFilters(CloudWatchLogsClient logs, String logGroup) {
        try {
            boolean done = false;
            String newToken = null;

            while (!done) {
                DescribeSubscriptionFiltersResponse response;
                if (newToken == null) {
                    DescribeSubscriptionFiltersRequest request = DescribeSubscriptionFiltersRequest.builder()
                            .logGroupName(logGroup)
                            .limit(1).build();

                    response = logs.describeSubscriptionFilters(request);
                } else {
                    DescribeSubscriptionFiltersRequest request = DescribeSubscriptionFiltersRequest.builder()
                            .nextToken(newToken)
                            .logGroupName(logGroup)
                            .limit(1).build();
                    response = logs.describeSubscriptionFilters(request);
                }

                for (SubscriptionFilter filter : response.subscriptionFilters()) {
                    System.out.printf("Retrieved filter with name %s, " + "pattern %s " + "and destination arn %s",
                            filter.filterName(),
                            filter.filterPattern(),
                            filter.destinationArn());
                }

                if (response.nextToken() == null) {
                    done = true;
                } else {
                    newToken = response.nextToken();
                }
            }

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        System.out.printf("Done");
    }
}
```
+  For API details, see [DescribeSubscriptionFilters](https://docs.aws.amazon.com/goto/SdkForJavaV2/logs-2014-03-28/DescribeSubscriptionFilters) in *AWS SDK for Java 2.x API Reference*. 

------
#### [ JavaScript ]

**SDK for JavaScript (v3)**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascriptv3/example_code/cloudwatch-logs#code-examples). 

```
import { DescribeSubscriptionFiltersCommand } from "@aws-sdk/client-cloudwatch-logs";
import { client } from "../libs/client.js";

const run = async () => {
  // This will return a list of all subscription filters in your account
  // matching the log group name.
  const command = new DescribeSubscriptionFiltersCommand({
    logGroupName: process.env.CLOUDWATCH_LOGS_LOG_GROUP,
    limit: 1,
  });

  try {
    return await client.send(command);
  } catch (err) {
    console.error(err);
  }
};

export default run();
```
+  For API details, see [DescribeSubscriptionFilters](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cloudwatch-logs/command/DescribeSubscriptionFiltersCommand) in *AWS SDK for JavaScript API Reference*. 

**SDK for JavaScript (v2)**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascript/example_code/cloudwatch-logs#code-examples). 

```
// Load the AWS SDK for Node.js
var AWS = require("aws-sdk");
// Set the region
AWS.config.update({ region: "REGION" });

// Create the CloudWatchLogs service object
var cwl = new AWS.CloudWatchLogs({ apiVersion: "2014-03-28" });

var params = {
  logGroupName: "GROUP_NAME",
  limit: 5,
};

cwl.describeSubscriptionFilters(params, function (err, data) {
  if (err) {
    console.log("Error", err);
  } else {
    console.log("Success", data.subscriptionFilters);
  }
});
```
+  For more information, see [AWS SDK for JavaScript Developer Guide](https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/cloudwatch-examples-subscriptions.html#cloudwatch-examples-subscriptions-describing). 
+  For API details, see [DescribeSubscriptionFilters](https://docs.aws.amazon.com/goto/AWSJavaScriptSDK/logs-2014-03-28/DescribeSubscriptionFilters) in *AWS SDK for JavaScript API Reference*. 

------
#### [ Kotlin ]

**SDK for Kotlin**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples). 

```
suspend fun describeFilters(logGroup: String) {
    val request =
        DescribeSubscriptionFiltersRequest {
            logGroupName = logGroup
            limit = 1
        }

    CloudWatchLogsClient.fromEnvironment { region = "us-west-2" }.use { cwlClient ->
        val response = cwlClient.describeSubscriptionFilters(request)
        response.subscriptionFilters?.forEach { filter ->
            println("Retrieved filter with name  ${filter.filterName} pattern ${filter.filterPattern} and destination ${filter.destinationArn}")
        }
    }
}
```
+  For API details, see [DescribeSubscriptionFilters](https://sdk.amazonaws.com/kotlin/api/latest/index.html) in *AWS SDK for Kotlin API reference*. 

------