What is @aws-sdk/client-cognito-identity?
The @aws-sdk/client-cognito-identity package is part of the AWS SDK for JavaScript (v3) and provides a client for accessing the Amazon Cognito Identity service. This service enables you to create unique identities for your users and authenticate them with identity providers. With this package, developers can integrate their applications with the Cognito Identity service to manage user identities, authentication, and access control.
What are @aws-sdk/client-cognito-identity's main functionalities?
Creating a new identity pool
This feature allows developers to create a new identity pool. An identity pool is a store of user identity data specific to your account. The code sample demonstrates how to create an identity pool using the CognitoIdentityClient.
const { CognitoIdentityClient, CreateIdentityPoolCommand } = require('@aws-sdk/client-cognito-identity');
const client = new CognitoIdentityClient({ region: 'us-east-1' });
const command = new CreateIdentityPoolCommand({
IdentityPoolName: 'MyIdentityPool',
AllowUnauthenticatedIdentities: false
});
const response = await client.send(command);
console.log(response);
Retrieving identity pool roles
This feature enables the retrieval of roles associated with a specific identity pool. The code sample shows how to use the CognitoIdentityClient to fetch the roles for an identity pool.
const { CognitoIdentityClient, GetIdentityPoolRolesCommand } = require('@aws-sdk/client-cognito-identity');
const client = new CognitoIdentityClient({ region: 'us-east-1' });
const command = new GetIdentityPoolRolesCommand({
IdentityPoolId: 'us-east-1:12345678-1234-1234-1234-123456789012'
});
const response = await client.send(command);
console.log(response);
Listing identities
This feature allows for listing the identities within an identity pool. The code sample demonstrates how to list identities in an identity pool, with a maximum number of results specified.
const { CognitoIdentityClient, ListIdentitiesCommand } = require('@aws-sdk/client-cognito-identity');
const client = new CognitoIdentityClient({ region: 'us-east-1' });
const command = new ListIdentitiesCommand({
IdentityPoolId: 'us-east-1:12345678-1234-1234-1234-123456789012',
MaxResults: 10
});
const response = await client.send(command);
console.log(response);
Other packages similar to @aws-sdk/client-cognito-identity
amazon-cognito-identity-js
The amazon-cognito-identity-js package provides authentication functionality for Amazon Cognito. It is focused more on the client-side interaction with Cognito User Pools, enabling sign-up, sign-in, and access to user information. Compared to @aws-sdk/client-cognito-identity, it is more specialized in handling user pool operations rather than managing identities and federated identities.
aws-amplify
AWS Amplify is a comprehensive framework that includes support for Cognito among other AWS services. It provides a higher-level abstraction for working with AWS services, including authentication and authorization via Amazon Cognito. While @aws-sdk/client-cognito-identity is more focused and granular, AWS Amplify offers a broader set of tools for building cloud-enabled applications, including but not limited to authentication.
@aws-sdk/client-cognito-identity
![NPM downloads](https://img.shields.io/npm/dm/@aws-sdk/client-cognito-identity.svg)
Description
AWS SDK for JavaScript CognitoIdentity Client for Node.js, Browser and React Native.
Amazon Cognito Federated Identities
Amazon Cognito Federated Identities is a web service that delivers scoped temporary
credentials to mobile devices and other untrusted environments. It uniquely identifies a
device and supplies the user with a consistent identity over the lifetime of an
application.
Using Amazon Cognito Federated Identities, you can enable authentication with one or
more third-party identity providers (Facebook, Google, or Login with Amazon) or an Amazon
Cognito user pool, and you can also choose to support unauthenticated access from your app.
Cognito delivers a unique identifier for each user and acts as an OpenID token provider
trusted by AWS Security Token Service (STS) to access temporary, limited-privilege AWS
credentials.
For a description of the authentication flow from the Amazon Cognito Developer Guide
see Authentication Flow.
For more information see Amazon Cognito Federated Identities.
Installing
To install the this package, simply type add or install @aws-sdk/client-cognito-identity
using your favorite package manager:
npm install @aws-sdk/client-cognito-identity
yarn add @aws-sdk/client-cognito-identity
pnpm add @aws-sdk/client-cognito-identity
Getting Started
Import
The AWS SDK is modulized by clients and commands.
To send a request, you only need to import the CognitoIdentityClient
and
the commands you need, for example CreateIdentityPoolCommand
:
const { CognitoIdentityClient, CreateIdentityPoolCommand } = require("@aws-sdk/client-cognito-identity");
import { CognitoIdentityClient, CreateIdentityPoolCommand } from "@aws-sdk/client-cognito-identity";
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.
const client = new CognitoIdentityClient({ region: "REGION" });
const params = {
};
const command = new CreateIdentityPoolCommand(params);
Async/await
We recommend using await
operator to wait for the promise returned by send operation as follows:
try {
const data = await client.send(command);
} catch (error) {
} 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) => {
},
(error) => {
}
);
Promises can also be called using .catch()
and .finally()
as follows:
client
.send(command)
.then((data) => {
})
.catch((error) => {
})
.finally(() => {
});
Callbacks
We do not recommend using callbacks because of callback hell,
but they are supported by the send operation.
client.send(command, (err, 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-cognito-identity";
const client = new AWS.CognitoIdentity({ region: "REGION" });
try {
const data = await client.createIdentityPool(params);
} catch (error) {
}
client
.createIdentityPool(params)
.then((data) => {
})
.catch((error) => {
});
client.createIdentityPool(params, (err, 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);
} catch (error) {
const { requestId, cfId, extendedRequestId } = error.$$metadata;
console.log({ requestId, cfId, extendedRequestId });
}
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.
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-cognito-identity
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.