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Compute Optimizer Client - AWS SDK for JavaScript v3

@aws-sdk/client-compute-optimizer

NPM version NPM downloads

Description

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

Compute Optimizer is a service that analyzes the configuration and utilization metrics of your Amazon Web Services compute resources, such as Amazon EC2 instances, Amazon EC2 Auto Scaling groups, Lambda functions, and Amazon EBS volumes. It reports whether your resources are optimal, and generates optimization recommendations to reduce the cost and improve the performance of your workloads. Compute Optimizer also provides recent utilization metric data, in addition to projected utilization metric data for the recommendations, which you can use to evaluate which recommendation provides the best price-performance trade-off. The analysis of your usage patterns can help you decide when to move or resize your running resources, and still meet your performance and capacity requirements. For more information about Compute Optimizer, including the required permissions to use the service, see the Compute Optimizer User Guide.

Installing

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

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

Getting Started

Import

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

// ES5 example
const { ComputeOptimizerClient, DeleteRecommendationPreferencesCommand } = require("@aws-sdk/client-compute-optimizer");
// ES6+ example
import { ComputeOptimizerClient, DeleteRecommendationPreferencesCommand } from "@aws-sdk/client-compute-optimizer";

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 different commands.
const client = new ComputeOptimizerClient({ region: "REGION" });

const params = {
  /** input parameters */
};
const command = new DeleteRecommendationPreferencesCommand(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) => {
  // process 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-compute-optimizer";
const client = new AWS.ComputeOptimizer({ region: "REGION" });

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

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

// callbacks.
client.deleteRecommendationPreferences(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;
   * }
   */
}

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-compute-optimizer 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.