Get an IAM policy using an Amazon SDK

    /// <summary>
    /// Get information about an IAM policy.
    /// </summary>
    /// <param name="policyArn">The IAM policy to retrieve information for.</param>
    /// <returns>The IAM policy.</returns>
    public async Task<ManagedPolicy> GetPolicyAsync(string policyArn)
    {

        var response = await _IAMService.GetPolicyAsync(new GetPolicyRequest { PolicyArn = policyArn });
        return response.Policy;
    }

bool AwsDoc::IAM::getPolicy(const Aws::String &policyArn,
                            const Aws::Client::ClientConfiguration &clientConfig) {
    Aws::IAM::IAMClient iam(clientConfig);
    Aws::IAM::Model::GetPolicyRequest request;
    request.SetPolicyArn(policyArn);

    auto outcome = iam.GetPolicy(request);
    if (!outcome.IsSuccess()) {
        std::cerr << "Error getting policy " << policyArn << ": " <<
                  outcome.GetError().GetMessage() << std::endl;
    }
    else {
        const auto &policy = outcome.GetResult().GetPolicy();
        std::cout << "Name: " << policy.GetPolicyName() << std::endl <<
                  "ID: " << policy.GetPolicyId() << std::endl << "Arn: " <<
                  policy.GetArn() << std::endl << "Description: " <<
                  policy.GetDescription() << std::endl << "CreateDate: " <<
                  policy.GetCreateDate().ToGmtString(Aws::Utils::DateFormat::ISO_8601)
                  << std::endl;
    }

    return outcome.IsSuccess();
}

// PolicyWrapper encapsulates AWS Identity and Access Management (IAM) policy actions
// used in the examples.
// It contains an IAM service client that is used to perform policy actions.
type PolicyWrapper struct {
	IamClient *iam.Client
}



// GetPolicy gets data about a policy.
func (wrapper PolicyWrapper) GetPolicy(policyArn string) (*types.Policy, error) {
	var policy *types.Policy
	result, err := wrapper.IamClient.GetPolicy(context.TODO(), &iam.GetPolicyInput{
		PolicyArn: aws.String(policyArn),
	})
	if err != nil {
		log.Printf("Couldn't get policy %v. Here's why: %v\n", policyArn, err)
	} else {
		policy = result.Policy
	}
	return policy, err
}

Create the client.

import { IAMClient } from "@aws-sdk/client-iam";
// Set the AWS Region.
const REGION = "REGION"; // For example, "us-east-1".
// Create an IAM service client object.
const iamClient = new IAMClient({ region: REGION });
export { iamClient };

Get the policy.

// Import required AWS SDK clients and commands for Node.js.
import { iamClient } from "./libs/iamClient.js";
import { GetPolicyCommand } from "@aws-sdk/client-iam";

// Set the parameters.
const params = {
  PolicyArn: "POLICY_ARN" /* required */,
};

const run = async () => {
  try {
    const data = await iamClient.send(new GetPolicyCommand(params));
    console.log("Success", data.Policy);
  } catch (err) {
    console.log("Error", err);
  }
};
run();

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

// Create the IAM service object
var iam = new AWS.IAM({apiVersion: '2010-05-08'});

var params = {
  PolicyArn: 'arn:aws:iam::aws:policy/AWSLambdaExecute'
};

iam.getPolicy(params, function(err, data) {
  if (err) {
    console.log("Error", err);
  } else {
    console.log("Success", data.Policy.Description);
  }
});

suspend fun getIAMPolicy(policyArnVal: String?) {

    val request = GetPolicyRequest {
        policyArn = policyArnVal
    }

    IamClient { region = "AWS_GLOBAL" }.use { iamClient ->
        val response = iamClient.getPolicy(request)
        println("Successfully retrieved policy ${response.policy?.policyName}")
    }
}

$uuid = uniqid();
$service = new IAMService();

    public function getPolicy($policyArn)
    {
        return $this->customWaiter(function () use ($policyArn) {
            return $this->iamClient->getPolicy(['PolicyArn' => $policyArn]);
        });
    }

def get_default_policy_statement(policy_arn):
    """
    Gets the statement of the default version of the specified policy.

    :param policy_arn: The ARN of the policy to look up.
    :return: The statement of the default policy version.
    """
    try:
        policy = iam.Policy(policy_arn)
        # To get an attribute of a policy, the SDK first calls get_policy.
        policy_doc = policy.default_version.document
        policy_statement = policy_doc.get('Statement', None)
        logger.info("Got default policy doc for %s.", policy.policy_name)
        logger.info(policy_doc)
    except ClientError:
        logger.exception("Couldn't get default policy statement for %s.", policy_arn)
        raise
    else:
        return policy_statement

  # Gets data about a policy.
  #
  # @param policy_arn [String] The ARN of the policy to look up.
  # @return [Aws::IAM::Policy] The retrieved policy.
  def get_policy(policy_arn)
    policy = @iam_resource.policy(policy_arn)
    puts("Got policy '#{policy.policy_name}'. Its ID is: #{policy.policy_id}.")
  rescue Aws::Errors::ServiceError => e
    puts("Couldn't get policy '#{policy_arn}'. Here's why:")
    puts("\t#{e.code}: #{e.message}")
    raise
  else
    policy
  end

    public func getPolicy(arn: String) async throws -> IAMClientTypes.Policy {
        let input = GetPolicyInput(
            policyArn: arn
        )
        do {
            let output = try await client.getPolicy(input: input)
            guard let policy = output.policy else {
                throw ServiceHandlerError.noSuchPolicy
            }
            return policy
        } catch {
            throw error
        }
    }