@aws-sdk/client-iam

What is @aws-sdk/client-iam?

The @aws-sdk/client-iam npm package is part of the AWS SDK for JavaScript v3. It provides a modular way to interact with AWS Identity and Access Management (IAM), allowing developers to manage users, groups, roles, and policies programmatically. This package is useful for automating IAM tasks, integrating IAM management into custom applications, and managing permissions within AWS environments.

What are @aws-sdk/client-iam's main functionalities?

User Management

This feature allows for the creation, modification, and deletion of IAM users. The provided code sample demonstrates how to create a new IAM user.

const { IAMClient, CreateUserCommand } = require('@aws-sdk/client-iam');

const client = new IAMClient({ region: 'us-west-2' });
const createUserParams = { UserName: 'NewUser' };
const createUserCommand = new CreateUserCommand(createUserParams);

client.send(createUserCommand).then(response => console.log(response)).catch(error => console.error(error));

Role Management

This feature manages IAM roles, including their creation and the policies attached to them. The code sample shows how to create a new role with an assume role policy.

const { IAMClient, CreateRoleCommand } = require('@aws-sdk/client-iam');

const client = new IAMClient({ region: 'us-west-2' });
const createRoleParams = {
  RoleName: 'NewRole',
  AssumeRolePolicyDocument: JSON.stringify({
    Version: '2012-10-17',
    Statement: [{
      Effect: 'Allow',
      Principal: { 'Service': 'ec2.amazonaws.com' },
      Action: 'sts:AssumeRole'
    }]
  })
};
const createRoleCommand = new CreateRoleCommand(createRoleParams);

client.send(createRoleCommand).then(response => console.log(response)).catch(error => console.error(error));

Policy Management

This feature involves the creation, updating, and deletion of IAM policies. The code sample illustrates how to create a new policy that allows actions on specified resources.

const { IAMClient, CreatePolicyCommand } = require('@aws-sdk/client-iam');

const client = new IAMClient({ region: 'us-west-2' });
const createPolicyParams = {
  PolicyName: 'NewPolicy',
  PolicyDocument: JSON.stringify({
    Version: '2012-10-17',
    Statement: [{
      Effect: 'Allow',
      Action: 'logs:CreateLogGroup',
      Resource: 'arn:aws:logs:us-west-2:123456789012:*'
    }]
  })
};
const createPolicyCommand = new CreatePolicyCommand(createPolicyParams);

client.send(createPolicyCommand).then(response => console.log(response)).catch(error => console.error(error));

Other packages similar to @aws-sdk/client-iam

aws-sdk

The aws-sdk package is the older version of the AWS SDK for JavaScript. It includes support for IAM and other AWS services in a single package, unlike @aws-sdk/client-iam which is modular. The aws-sdk is less modular but can be easier for simple applications that need multiple AWS services.

google-auth-library

While not for AWS, google-auth-library is similar in functionality for Google Cloud. It provides authentication and authorization functionalities for Google Cloud services, similar to how @aws-sdk/client-iam manages IAM for AWS. The comparison highlights how both packages are essential for managing security in cloud environments, albeit for different providers.

README

@aws-sdk/client-iam

Description

AWS SDK for JavaScript IAM Client for Node.js, Browser and React Native.

AWS Identity and Access Management

AWS Identity and Access Management (IAM) is a web service for securely controlling access to AWS services. With IAM, you can centrally manage users, security credentials such as access keys, and permissions that control which AWS resources users and applications can access. For more information about IAM, see AWS Identity and Access Management (IAM) and the AWS Identity and Access Management User Guide.

Installing

To install the this package, simply type add or install @aws-sdk/client-iam using your favorite package manager:

• npm install @aws-sdk/client-iam
• yarn add @aws-sdk/client-iam
• pnpm add @aws-sdk/client-iam

Getting Started

Import

The AWS SDK is modulized by clients and commands. To send a request, you only need to import the IAMClient and the commands you need, for example AddClientIDToOpenIDConnectProviderCommand:

// ES5 example
const { IAMClient, AddClientIDToOpenIDConnectProviderCommand } = require("@aws-sdk/client-iam");

// ES6+ example
import { IAMClient, AddClientIDToOpenIDConnectProviderCommand } from "@aws-sdk/client-iam";

Usage

To send a request, you:

• Initiate client with configuration (e.g. credentials, region).
• Initiate command with input parameters.
• Call send operation on client with command object as input.
• If you are using a custom http handler, you may call destroy() to close open connections.

// a client can be shared by difference commands.
const client = new IAMClient({ region: "REGION" });

const params = {
  /** input parameters */
};
const command = new AddClientIDToOpenIDConnectProviderCommand(params);

Async/await

We recommend using await operator to wait for the promise returned by send operation as follows:

// async/await.
try {
  const data = await client.send(command);
  // process data.
} catch (error) {
  // error handling.
} finally {
  // finally.
}

Async-await is clean, concise, intuitive, easy to debug and has better error handling as compared to using Promise chains or callbacks.

Promises

You can also use Promise chaining to execute send operation.

client.send(command).then(
  (data) => {
    // process data.
  },
  (error) => {
    // error handling.
  }
);

Promises can also be called using .catch() and .finally() as follows:

client
  .send(command)
  .then((data) => {
    // process data.
  })
  .catch((error) => {
    // error handling.
  })
  .finally(() => {
    // finally.
  });

Callbacks

We do not recommend using callbacks because of callback hell, but they are supported by the send operation.

// callbacks.
client.send(command, (err, data) => {
  // proccess err and data.
});

v2 compatible style

The client can also send requests using v2 compatible style. However, it results in a bigger bundle size and may be dropped in next major version. More details in the blog post on modular packages in AWS SDK for JavaScript

import * as AWS from "@aws-sdk/client-iam";
const client = new AWS.IAM({ region: "REGION" });

// async/await.
try {
  const data = client.addClientIDToOpenIDConnectProvider(params);
  // process data.
} catch (error) {
  // error handling.
}

// Promises.
client
  .addClientIDToOpenIDConnectProvider(params)
  .then((data) => {
    // process data.
  })
  .catch((error) => {
    // error handling.
  });

// callbacks.
client.addClientIDToOpenIDConnectProvider(params, (err, data) => {
  // proccess err and data.
});

Troubleshooting

When the service returns an exception, the error will include the exception information, as well as response metadata (e.g. request id).

try {
  const data = await client.send(command);
  // process data.
} catch (error) {
  const { requestId, cfId, extendedRequestId } = error.$metadata;
  console.log({ requestId, cfId, extendedRequestId });
  /**
   * The keys within exceptions are also parsed.
   * You can access them by specifying exception names:
   * if (error.name === 'SomeServiceException') {
   *     const value = error.specialKeyInException;
   * }
   */
}

Getting Help

Please use these community resources for getting help. We use the GitHub issues for tracking bugs and feature requests, but have limited bandwidth to address them.

• Visit Developer Guide or API Reference.
• Check out the blog posts tagged with aws-sdk-js on AWS Developer Blog.
• Ask a question on StackOverflow and tag it with aws-sdk-js.
• Join the AWS JavaScript community on gitter.
• If it turns out that you may have found a bug, please open an issue.

To test your universal JavaScript code in Node.js, browser and react-native environments, visit our code samples repo.

Contributing

This client code is generated automatically. Any modifications will be overwritten the next time the @aws-sdk/client-iam package is updated. To contribute to client you can check our generate clients scripts.

License

This SDK is distributed under the Apache License, Version 2.0, see LICENSE for more information.

Changelog

3.3.0 (2021-01-14)

Bug Fixes

• clients: export explicit dependencies on @aws-sdk/types (#1902) (96f1087)
• clients: lowercase all header names in serializer (#1892) (1308721)
• url-parser: merge browser and node url parser, add rn url parser (#1903) (99be092)
• util-waiters: waiters should call operation once before entering waiting (#1915) (2a6ac11)

Features

• clients: update README with documentation, usage and more (#1907) (03be111)