AWS Blockchain Laravel Package

A comprehensive Laravel package for AWS blockchain integration, specifically designed for supply chain traceability applications.

Features

• Multiple Blockchain Drivers: Support for AWS Managed Blockchain, Amazon QLDB, and Mock drivers
• Dual Blockchain Architecture: Separate public and private blockchain operations
• Data Separation: Automatic categorization of public vs private data
• Laravel Integration: Seamless integration with Laravel's service container
• Testing Support: Mock drivers for testing without AWS credentials

Installation

This package can be included as a local package in your Laravel project. It's automatically loaded via Composer autoloading.

Configuration

The package configuration is published to config/aws-blockchain-laravel.php:

return [
    'default_driver' => env('BLOCKCHAIN_DRIVER', 'mock'),
    'public_driver' => env('BLOCKCHAIN_PUBLIC_DRIVER', 'mock'),
    'private_driver' => env('BLOCKCHAIN_PRIVATE_DRIVER', 'mock'),
    
    'drivers' => [
        'mock' => [
            'type' => 'mock',
        ],
        'managed_blockchain' => [
            'type' => 'managed_blockchain',
            'region' => env('AWS_DEFAULT_REGION', 'us-east-1'),
            'access_key_id' => env('AWS_ACCESS_KEY_ID'),
            'secret_access_key' => env('AWS_SECRET_ACCESS_KEY'),
            'network_id' => env('AWS_BLOCKCHAIN_NETWORK_ID'),
            'member_id' => env('AWS_BLOCKCHAIN_MEMBER_ID'),
            'node_id' => env('AWS_BLOCKCHAIN_NODE_ID'),
            'channel_name' => env('BLOCKCHAIN_CHANNEL_NAME', 'mychannel'),
            'chaincode_name' => env('BLOCKCHAIN_CHAINCODE_NAME', 'supply-chain'),
        ],
        'qldb' => [
            'type' => 'qldb',
            'region' => env('AWS_DEFAULT_REGION', 'us-east-1'),
            'access_key_id' => env('AWS_ACCESS_KEY_ID'),
            'secret_access_key' => env('AWS_SECRET_ACCESS_KEY'),
            'ledger_name' => env('AWS_QLDB_LEDGER_NAME', 'supply-chain-ledger'),
        ],
    ],
];

Usage

Using the Facade

use AwsBlockchain\Laravel\Facades\Blockchain;

// Get public driver
$publicDriver = Blockchain::publicDriver();

// Get private driver
$privateDriver = Blockchain::privateDriver();

// Record an event
$eventId = $publicDriver->recordEvent($data);

// Get an event
$event = $publicDriver->getEvent($eventId);

// Verify integrity
$isValid = $publicDriver->verifyIntegrity($eventId, $data);

Using the Service Container

// Get the blockchain manager
$manager = app('blockchain');

// Get specific drivers
$publicDriver = app('blockchain.public');
$privateDriver = app('blockchain.private');

Drivers

MockDriver

Perfect for testing and development. Stores events in memory and provides simulated blockchain operations.

$driver = new \AwsBlockchain\Laravel\Drivers\MockDriver('mock');

ManagedBlockchainDriver

Integrates with AWS Managed Blockchain service for production blockchain operations.

$driver = new \AwsBlockchain\Laravel\Drivers\ManagedBlockchainDriver($config);

QldbDriver

Uses Amazon QLDB for immutable, cryptographically verifiable transaction logs.

$driver = new \AwsBlockchain\Laravel\Drivers\QldbDriver($config);

Data Separation

The package automatically separates data into public and private categories:

Public Data (transparent blockchain):

• Product origin
• Certifications
• Public timestamps
• Quality scores

Private Data (confidential blockchain):

• Supplier details
• Pricing information
• Internal notes
• Sensitive locations

Testing

The package includes comprehensive testing support with mock drivers that don't require AWS credentials:

// In your tests
$this->app->bind('blockchain.public', function () {
    return new \AwsBlockchain\Laravel\Drivers\MockDriver('mock');
});

Environment Variables

Add these to your .env file for production:

# AWS Credentials
AWS_ACCESS_KEY_ID=your_access_key
AWS_SECRET_ACCESS_KEY=your_secret_key
AWS_DEFAULT_REGION=us-east-1

# Blockchain Configuration
BLOCKCHAIN_DRIVER=mock
BLOCKCHAIN_PUBLIC_DRIVER=mock
BLOCKCHAIN_PRIVATE_DRIVER=mock

# For production with AWS
BLOCKCHAIN_PUBLIC_DRIVER=managed_blockchain
BLOCKCHAIN_PRIVATE_DRIVER=qldb

# AWS Blockchain Settings
AWS_BLOCKCHAIN_NETWORK_ID=your_network_id
AWS_BLOCKCHAIN_MEMBER_ID=your_member_id
AWS_BLOCKCHAIN_NODE_ID=your_node_id
BLOCKCHAIN_CHANNEL_NAME=mychannel
BLOCKCHAIN_CHAINCODE_NAME=supply-chain

# QLDB Settings
AWS_QLDB_LEDGER_NAME=supply-chain-ledger

License

MIT License - see LICENSE file for details.