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elk-kinesis-logger

v0.1.0

Published

Logging to a Kinesis stream for consumption into an ELK cluster

Downloads

16

Readme

CircleCI

ELK Kinesis Logger

Send logs to an ELK stack via an AWS Kinesis stream.

The ELK stack should be using the Kinesis Input Plugin.

Uses STSAssumeRole to authenticate to Kinesis.

Why

The main use case is for AWS Lambdas. When you console.log within a Lambda, they go into CloudWatch Logs. Whilst CloudWatch Logs is good, an ELK stack is better!

Using this module, we can easily get logs into an ELK stack.

Installation

npm install elk-kinesis-logger

Usage

Import the module:

const ELKKinesisLogger = require('elk-kinesis-logger');

Create a new logger:

const logger = new ELKKinesisLogger({
  stage: 'PROD',
  stack: 'my-stack',
  app: 'my-app',
  roleArn: 'arn:aws:iam::000000000000:role/my-role',
  streamName: 'my-stream'
});

Open the logger:

logger.open().then(() => {
    
});

Write a log message:

logger.log('something happened');

Ensure all logs have written by closing the logger:

logger.close().then(() => {
    
});

Complete example

const ELKKinesisLogger = require('elk-kinesis-logger');

const logger = new ELKKinesisLogger({
  stage: 'PROD',
  stack: 'my-stack',
  app: 'my-app',
  roleArn: 'arn:aws:iam::000000000000:role/my-role',
  streamName: 'my-stream'
});

logger.open().then(() => {
  const value = 5 * 5;
  
  logger.log(`the value is ${value}`);
  
  return logger.close();
}).then((writtenLogs) => {
  // other work
});

Further examples

See the examples.

Contributing

  • clone the repo
  • update the code
  • write a test
  • npm test
  • commit

Publishing

  • npm publish