AWS SDK for JavaScript CognitoIdentityProvider Client for Node.js, Browser and React Native.
With the Amazon Cognito user pools API, you can configure user pools and authenticate users. To authenticate users from third-party identity providers (IdPs) in this API, you can link IdP users to native user profiles. Learn more about the authentication and authorization of federated users at Adding user pool sign-in through a third party and in the User pool federation endpoints and hosted UI reference.
This API reference provides detailed information about API operations and object types in Amazon Cognito.
Along with resource management operations, the Amazon Cognito user pools API includes classes of operations and authorization models for client-side and server-side authentication of users. You can interact with operations in the Amazon Cognito user pools API as any of the following subjects.
-
An administrator who wants to configure user pools, app clients, users, groups, or other user pool functions.
-
A server-side app, like a web application, that wants to use its Amazon Web Services privileges to manage, authenticate, or authorize a user.
-
A client-side app, like a mobile app, that wants to make unauthenticated requests to manage, authenticate, or authorize a user.
For more information, see Using the Amazon Cognito user pools API and user pool endpoints in the Amazon Cognito Developer Guide.
With your Amazon Web Services SDK, you can build the logic to support operational flows in every use
case for this API. You can also make direct REST API requests to Amazon Cognito user pools service endpoints. The following links can get you started
with the CognitoIdentityProvider client in other supported Amazon Web Services
SDKs.
To get started with an Amazon Web Services SDK, see Tools to Build on Amazon Web Services. For example actions and scenarios, see Code examples for Amazon Cognito Identity Provider using Amazon Web Services SDKs.
To install the this package, simply type add or install @aws-sdk/client-cognito-identity-provider using your favorite package manager:
npm install @aws-sdk/client-cognito-identity-provideryarn add @aws-sdk/client-cognito-identity-providerpnpm add @aws-sdk/client-cognito-identity-provider
The AWS SDK is modulized by clients and commands.
To send a request, you only need to import the CognitoIdentityProviderClient and
the commands you need, for example ListDevicesCommand:
// ES5 example
const { CognitoIdentityProviderClient, ListDevicesCommand } = require("@aws-sdk/client-cognito-identity-provider");// ES6+ example
import { CognitoIdentityProviderClient, ListDevicesCommand } from "@aws-sdk/client-cognito-identity-provider";To send a request, you:
- Initiate client with configuration (e.g. credentials, region).
- Initiate command with input parameters.
- Call
sendoperation 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 different commands.
const client = new CognitoIdentityProviderClient({ region: "REGION" });
const params = {
/** input parameters */
};
const command = new ListDevicesCommand(params);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.
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.
});We do not recommend using callbacks because of callback hell, but they are supported by the send operation.
// callbacks.
client.send(command, (err, data) => {
// process err and data.
});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-provider";
const client = new AWS.CognitoIdentityProvider({ region: "REGION" });
// async/await.
try {
const data = await client.listDevices(params);
// process data.
} catch (error) {
// error handling.
}
// Promises.
client
.listDevices(params)
.then((data) => {
// process data.
})
.catch((error) => {
// error handling.
});
// callbacks.
client.listDevices(params, (err, data) => {
// process err and data.
});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;
* }
*/
}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-json 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.
This client code is generated automatically. Any modifications will be overwritten the next time the @aws-sdk/client-cognito-identity-provider package is updated.
To contribute to client you can check our generate clients scripts.
This SDK is distributed under the Apache License, Version 2.0, see LICENSE for more information.