EC2 SNS Client

AWS SNS Client that:

• automatically subscribes to SNS topic,
• gets endpoint URL from EC2 instance public IP

Designed to run in AWS ECS / Docker environment.

Usage

const SNS = require('ec2-sns');
const sns = new SNS({
  port: 8081 // default port
});

// receive messages from SNS Topic
sns.on('message', message => {
  console.log('Subject', message.subject);
  console.log('Body', message.body); // must be JSON
});

// send message to SNS Topic
sns.on('ready', () => {
  sns.send({
    subject: 'my-subject',
    message: {foo: 'bar'}
  });
});

Environment variables

• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY
• AWS_TOPIC_ARN (SNS topic has to be created first)
• AWS_REGION (optional, defaults to eu-west-1)
• AWS_SUBSCRIPTION_ENDPOINT (optional, overrides automatic one)
• NO_SUBSCRIPTION (optional) if set it won't subscribe, but still can send messages to SNS Topic