gremlin-aws-sigv4

This package provides an extension for Apache's TinkerPop3 Gremlin javascript driver compatible with IAM Database Authentication for Neptune.

Installation

This project is a Node.js module and can be installed with npm.

npm install gremlin-aws-sigv4

Usage

This package reads the environment variables for AWS authentication. These variables can be overridden.

Usage with environment variables

These three enviroment variables must be defined.

AWS_ACCESS_KEY_ID – AWS access key.
AWS_SECRET_ACCESS_KEY – AWS secret key.
AWS_DEFAULT_REGION – AWS region.

  const gremlin = require('gremlin-aws-sigv4');

  const graph = new gremlin.structure.Graph();
  const connection = new gremlin.driver.AwsSigV4DriverRemoteConnection(
    'your-instance.neptune.amazonaws.com', // host
    8182, // port
    {}, // options,
    () => { // connected callback
      const g = graph.traversal().withRemote(connection);
      const count = await g.V().count().next();
      connection.close();
    }, 
    (code, message) => { }, // disconnected callback
    (error) => { } // error callback
  );

Usage without environment variables

  const gremlin = require('gremlin-aws-sigv4');

  const host = 'your-instance.neptune.amazonaws.com';
  const port = 8182;
  const opts = {
    accessKey: 'your-access-key',
    secretKey: 'your-secret-key',
    region: 'your-region',
  };

  // creates the connection
  const graph = new gremlin.structure.Graph();
  const connection = new gremlin.driver.AwsSigV4DriverRemoteConnection(
    'your-instance.neptune.amazonaws.com', // host
    8182, // port
    { // options
      accessKey: 'your-access-key',
      secretKey: 'your-secret-key',
      region: 'your-region',
    },
    () => { // connected callback
      const g = graph.traversal().withRemote(connection);
      const count = await g.V().count().next();
      connection.close();
    }, 
    (code, message) => { }, // disconnected callback
    (error) => { } // error callback
  );

Additional options

Thses are the available config options, none of them is required.

{
  // Enable auto-reconnection on connection failure - default: false 
  autoReconnect: true,

  // Number of auto-reconnection retries - default: 10 
  maxRetry: 3,
}

Tests

Unit tests

# install dependencies
npm install

# run the tests
npm run test

mrferris/gremlin-aws-sigv4