@aws-sdk/client-application-signals

Description

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

Use CloudWatch Application Signals for comprehensive observability of your cloud-based applications. It enables real-time service health dashboards and helps you track long-term performance trends against your business goals. The application-centric view provides you with unified visibility across your applications, services, and dependencies, so you can proactively monitor and efficiently triage any issues that may arise, ensuring optimal customer experience.

Application Signals provides the following benefits:

• Automatically collect metrics and traces from your applications, and display key metrics such as call volume, availability, latency, faults, and errors.

• Create and monitor service level objectives (SLOs).

• See a map of your application topology that Application Signals automatically discovers, that gives you a visual representation of your applications, dependencies, and their connectivity.

Application Signals works with CloudWatch RUM, CloudWatch Synthetics canaries, and Amazon Web Services Service Catalog AppRegistry, to display your client pages, Synthetics canaries, and application names within dashboards and maps.

Installing

To install this package, simply type add or install @aws-sdk/client-application-signals
using your favorite package manager:
- npm install @aws-sdk/client-application-signals
- yarn add @aws-sdk/client-application-signals
- pnpm add @aws-sdk/client-application-signals

Getting Started

$3

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

``js
// ES5 example
const { ApplicationSignalsClient, ListServiceLevelObjectivesCommand } = require("@aws-sdk/client-application-signals");
`

`ts
// ES6+ example
import { ApplicationSignalsClient, ListServiceLevelObjectivesCommand } from "@aws-sdk/client-application-signals";
`

$3

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.

`js
// a client can be shared by different commands.
const client = new ApplicationSignalsClient({ region: "REGION" });

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

#### Async/await

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

`js
// 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.

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

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

`js
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.

`js
// 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

`ts
import * as AWS from "@aws-sdk/client-application-signals";
const client = new AWS.ApplicationSignals({ region: "REGION" });

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

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

// callbacks.
client.listServiceLevelObjectives(params, (err, data) => {
// process err and data.
});
`

$3

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

`js
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-application-signals` 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.

Client Commands (Operations List)

BatchGetServiceLevelObjectiveBudgetReport

Command API Reference / Input / Output

BatchUpdateExclusionWindows

Command API Reference / Input / Output

CreateServiceLevelObjective

Command API Reference / Input / Output

DeleteGroupingConfiguration

Command API Reference / Input / Output

DeleteServiceLevelObjective

Command API Reference / Input / Output

GetService

Command API Reference / Input / Output

GetServiceLevelObjective

Command API Reference / Input / Output

ListAuditFindings

Command API Reference / Input / Output

ListEntityEvents

Command API Reference / Input / Output

ListGroupingAttributeDefinitions

Command API Reference / Input / Output

ListServiceDependencies

Command API Reference / Input / Output

ListServiceDependents

Command API Reference / Input / Output

ListServiceLevelObjectiveExclusionWindows

Command API Reference / Input / Output

ListServiceLevelObjectives

Command API Reference / Input / Output

ListServiceOperations

Command API Reference / Input / Output

ListServices

Command API Reference / Input / Output

ListServiceStates

Command API Reference / Input / Output

ListTagsForResource

Command API Reference / Input / Output

PutGroupingConfiguration

Command API Reference / Input / Output

StartDiscovery

Command API Reference / Input / Output

TagResource

Command API Reference / Input / Output

UntagResource

Command API Reference / Input / Output

UpdateServiceLevelObjective

Command API Reference / Input / Output