_                                   _  _     
          __| | _  _  _ _   __ _  _ __   ___  __| || |__  
         / _` || || || ' \ / _` || '  \ / _ \/ _` || '_ \
         \__,_| \_, ||_||_|\__,_||_|_|_|\___/\__,_||_.__/
                |__/  _                                                     
                  ___| |_  _ _  ___  __ _  _ __  
                 (_-<|  _|| '_|/ -_)/ _` || '  \ 
                 /__/ \__||_|  \___|\__,_||_|_|_|
           _            _    _                              _    
      ___ | | __ _  ___| |_ (_) __  ___ ___  __ _  _ _  __ | |_  
     / -_)| |/ _` |(_-<|  _|| |/ _|(_-</ -_)/ _` || '_|/ _|| ' \ 
     \___||_|\__,_|/__/ \__||_|\__|/__/\___|\__,_||_|  \__||_||_|
                                                             
                                                                            

The missing blueprint for AWS Lambda, which reads stream from AWS DynamoDB and writes it to ElasticSearch. Compatible with node 8.10. (If for some reason you want to use it with node 6.10, then use 1.0.0 of this module)

Whenever data is changed (modified, removed or inserted) in DynamoDB one can use AWS Lambda function to capture this change and update ElasticSearch machine immediately. Further reading:

Indexing Amazon DynamoDB Content with Amazon Elasticsearch Service Using AWS Lambda

Install:

npm i dynamodb-stream-elasticsearch 

Use it in your lambda:

const { pushStream } = require('dynamodb-stream-elasticsearch');

const { ES_ENDPOINT, INDEX, TYPE } = process.env;

function myHandler(event, context, callback) {
  console.log('Received event:', JSON.stringify(event, null, 2));
  pushStream({ event, index: INDEX, type: TYPE, endpoint: ES_ENDPOINT })
    .then(() => {
      callback(null, `Successfully processed ${event.Records.length} records.`);
    })
    .catch((e) => {
      callback(`Error ${e}`, null);
    });
}

exports.handler = myHandler;

Upload Lambda to AWS and star this repository if it works as expected!!

To run tests locally you need to have ElasticSearch docker container. Simply type:

docker run -i -p 9200:9200 --name my_elastic -p 9300:9300 -e "discovery.type=single-node" elasticsearch

If you want to commit changes, make sure if follow these rules:

1. All code changes should go with a proper integration test;
2. Code should follow Javascript Standard Guideline;
3. Commit messages should be set according to this article.

• Introduce Continuous Integration;
• Add elastic search bulk operation instead of index for multiple records;

• matrus2

This project is licensed under the MIT License - see the LICENSE.md file for details