Send CloudWatch Events events using an AWS SDK - Amazon CloudWatch Events

Send CloudWatch Events events using an AWS SDK

The following code examples show how to send Amazon CloudWatch Events events.

Java
SDK for Java 2.x
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository. 

    public static void putCWEvents(CloudWatchEventsClient cwe, String resourceArn ) {
        try {

            final String EVENT_DETAILS =
                "{ \"key1\": \"value1\", \"key2\": \"value2\" }";

            PutEventsRequestEntry requestEntry = PutEventsRequestEntry.builder()
                .detail(EVENT_DETAILS)
                .detailType("sampleSubmitted")
                .resources(resourceArn)
                .source("aws-sdk-java-cloudwatch-example")
                .build();

            PutEventsRequest request = PutEventsRequest.builder()
                .entries(requestEntry)
                .build();

            cwe.putEvents(request);
            System.out.println("Successfully put CloudWatch event");

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

  • For API details, see PutEvents in AWS SDK for Java 2.x API Reference.

JavaScript
SDK for JavaScript (v3)
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

Create the client in a separate module and export it.

import { CloudWatchEventsClient } from "@aws-sdk/client-cloudwatch-events";
import { DEFAULT_REGION } from "libs/utils/util-aws-sdk.js";

export const client = new CloudWatchEventsClient({ region: DEFAULT_REGION });

Import the SDK and client modules and call the API.

import { PutEventsCommand } from "@aws-sdk/client-cloudwatch-events";
import { client } from "../libs/client.js";

const run = async () => {
  const command = new PutEventsCommand({
    // The list of events to send to Amazon CloudWatch Events.
    Entries: [
      {
        // The name of the application or service that is sending the event.
        Source: "my.app",

        // The name of the event that is being sent.
        DetailType: "My Custom Event",

        // The data that is sent with the event.
        Detail: JSON.stringify({ timeOfEvent: new Date().toISOString() }),
      },
    ],
  });

  try {
    return await client.send(command);
  } catch (err) {
    console.error(err);
  }
};

export default run();
SDK for JavaScript (v2)
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository. 

// Load the AWS SDK for Node.js
var AWS = require('aws-sdk');
// Set the region 
AWS.config.update({region: 'REGION'});

// Create CloudWatchEvents service object
var cwevents = new AWS.CloudWatchEvents({apiVersion: '2015-10-07'});

var params = {
  Entries: [
    {
      Detail: '{ \"key1\": \"value1\", \"key2\": \"value2\" }',
      DetailType: 'appRequestSubmitted',
      Resources: [
        'RESOURCE_ARN',
      ],
      Source: 'com.company.app'
    }
  ]
};

cwevents.putEvents(params, function(err, data) {
  if (err) {
    console.log("Error", err);
  } else {
    console.log("Success", data.Entries);
  }
});

For a complete list of AWS SDK developer guides and code examples, see Using CloudWatch Events with an AWS SDK. This topic also includes information about getting started and details about previous SDK versions.