Cdk-tweet-queue NPM

Tweet Queue for AWS CDK

This is an AWS CDK construct library which allows you to get a feed of Twitter search results into an SQS queue. It works by periodically polling the freely available Twitter Standard Search API and sending all new tweets to an SQS queue.

Inspired by @jlhood's aws-serverless-twitter-event-source

Architecture

npm.io

A CloudWatch Event Rule triggers the poller AWS Lambda function periodically
The poller reads the last checkpoint from a DynamoDB table (if exists)
The poller issues a Twitter search query for all new tweets
The poller enqueues all tweets to an SQS queue
The poller stores the ID of the last tweet into the DynamoDB checkpoint table.
Rinse & repeat.

Twitter API Keys

To issue a Twitter search request, you will need to apply for a Twitter developer account, and obtain API keys through by defining a new application.

The Twitter API keys are read by the poller from an AWS Secrets Manager entry. The entry must contain the following attributes: consumer_key, consumer_secret, access_token_key and access_token_secret (exact names).

Create a new AWS Secrets Manager entry for your API keys
Fill in the key values as shown below:
Store the key
Obtain the ARN of the secret (you will need it soon).

Usage

Use npm to install the module in your CDK project. This will also add it to your package.json file.

$ npm install cdk-tweet-queue

Add a TweetQueue to your CDK stack:

import { TweetQueue } from 'cdk-tweet-queue';

const queue = new TweetQueue(this, 'TweetStream', {
  // this is the ARN of the secret you stored
  secretArn: 'arn:aws:secretsmanager:us-east-1:1234567891234:secret:xxxxxxxxx'

  // twitter search query
  // see https://developer.twitter.com/en/docs/tweets/search/guides/standard-operators
  query: '#awscdk',

  // optional properties
  intervalMin: 60,          // optional: polling interval in minutes
  retentionPeriodSec: 60,   // optional: queue retention period
  visibilityTimeoutSec: 60, // optional: queue visilibity timeout
});

Now, queue is an sqs.Queue object and can be used anywhere a queue is accepted. For example, you could process the queue messages using an AWS Lambda function by setting up an SQS event source mapping.

Development

The project is managed by projen and offers the following commands:

yarn projen - Synthesize the project configuration.
yarn compile - Compile all source code.
yarn test - Run all tests.
yarn build - Complie, test, and package the module.

Integration test

There is also an integration test that can be executed by running the following commands. You will need to set the TWEET_QUEUE_SECRET_ARN environment variable in order for the test to be able to use your Twitter API keys.

$ yarn integ:deploy

Don't forget to destroy:

$ yarn integ:destroy

You can also run any cdk command on the integration test application by running:

yarn integ <command>

License

Apache-2.0

aws-cdk@^2.20.0 cdk constructs twitter

aws-cdk-lib constructs

@infinitebrahmanuniverse/nolb-cdk @everything-registry/sub-chunk-1303 @zalastax/nolb-cdk

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