@aws-sdk/client-rekognition
Description
AWS SDK for JavaScript Rekognition Client for Node.js, Browser and React Native.
This is the API Reference for Amazon Rekognition Image, Amazon Rekognition Bulk Image Analysis, Amazon Rekognition Custom Labels, Amazon Rekognition Stored Video, Amazon Rekognition Face Liveness, Amazon Rekognition Streaming Video. It provides descriptions of actions, data types, common parameters, and common errors.
Amazon Rekognition Image
Amazon Rekognition Bulk Image Analysis
Amazon Rekognition Custom Labels
Amazon Rekognition Stored Video
Amazon Rekognition Face Liveness
Amazon Rekognition Streaming Video
Installing
To install this package, use the CLI of your favorite package manager:
npm install @aws-sdk/client-rekognitionyarn add @aws-sdk/client-rekognitionpnpm add @aws-sdk/client-rekognition
Getting Started
Import
The AWS SDK is modulized by clients and commands.
To send a request, you only need to import the RekognitionClient and
the commands you need, for example ListCollectionsCommand:
// ES5 example
const { RekognitionClient, ListCollectionsCommand } = require("@aws-sdk/client-rekognition");
// ES6+ example
import { RekognitionClient, ListCollectionsCommand } from "@aws-sdk/client-rekognition";
Usage
To send a request:
- Instantiate a client with configuration (e.g. credentials, region).
- See docs/CLIENTS for configuration details.
- See @aws-sdk/config for additional options.
- Instantiate a command with input parameters.
- Call the
sendoperation on the client, providing the command object as input.
const client = new RekognitionClient({ region: "REGION" });
const params = { /** input parameters */ };
const command = new ListCollectionsCommand(params);
Async/await
We recommend using the 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.
}
Promises
You can also use Promise chaining.
client
.send(command)
.then((data) => {
// process data.
})
.catch((error) => {
// error handling.
})
.finally(() => {
// finally.
});
Aggregated client
The aggregated client class is exported from the same package, but without the "Client" suffix.
Rekognition extends RekognitionClient and additionally supports all operations, waiters, and paginators as methods.
This style may be familiar to you from the AWS SDK for JavaScript v2.
If you are bundling the AWS SDK, we recommend using only the bare-bones client (RekognitionClient).
More details are in the blog post on
modular packages in AWS SDK for JavaScript.
import { Rekognition } from "@aws-sdk/client-rekognition";
const client = new Rekognition({ region: "REGION" });
// async/await.
try {
const data = await client.listCollections(params);
// process data.
} catch (error) {
// error handling.
}
// Promises.
client
.listCollections(params)
.then((data) => {
// process data.
})
.catch((error) => {
// error handling.
});
// callbacks (not recommended).
client.listCollections(params, (err, data) => {
// process 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;
* }
*/
}
See also docs/ERROR_HANDLING.
Getting Help
Please use these community resources for getting help. We use GitHub issues for tracking bugs and feature requests, but have limited bandwidth to address them.
- Visit the 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.
Contributing
This client code is generated automatically. Any modifications will be overwritten the next time the @aws-sdk/client-rekognition 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.