Configuration-Driven REST Framework - Overview

Table of Contents

1. Overview
2. Core Components
3. Configuration
4. Transformers
5. Business Logic
6. Examples
7. Testing Guide

Overview

Purpose and Benefits

The Configuration-Driven REST Framework is a flexible and extensible solution designed to simplify the creation and maintenance of RESTful endpoints through configuration rather than code. This approach offers several key advantages:

1. Reduced Development Time

• Create new endpoints without writing boilerplate code
• Standardize endpoint behavior across your application
• Rapid prototyping and deployment of new APIs

2. Enhanced Maintainability

• Centralized configuration management
• Consistent error handling and validation
• Easier updates and modifications

3. Improved Security

• Standardized security controls
• Built-in validation and sanitization
• Configurable access rights

Architecture Overview

Key Features

1. Configuration-Driven Development

• JSON/YAML configuration support
• Dynamic endpoint registration
• Flexible routing rules
• Environment-specific configurations

2. Modular Architecture

Framework
├── Configuration
│   ├── Endpoint Definition
│   ├── Validation Rules
│   └── Security Settings
├── Core Components
│   ├── Endpoint Handler
│   ├── Transformers
│   └── Business Logic
└── Cross-Cutting Concerns
├── Security
├── Validation
└── Monitoring

3. Built-in Features

• Request/Response transformation
• Input validation
• Error handling
• Access control
• Monitoring and metrics
• Caching support

Request Flow

1. Request Reception

HTTP Request → Dynamic Endpoint → Input Validation

2. Processing Pipeline

Input Transformer → Business Logic → Output Transformer

3. Response Handling

Response Formatting → Error Handling → HTTP Response

4. Consolidated Diagram

Getting Started

1. Basic Setup

<dependency>
<groupId>com.framework</groupId>
<artifactId>rest-framework</artifactId>
<version>1.0.0</version>
</dependency>

2. Minimal Configuration

{
"path": "/api/resource",
"httpMethod": "GET",
"requiredRights": ["READ"],
"inputTransformer": "defaultTransformer",
"businessLogicBean": "resourceService",
"outputTransformer": "defaultTransformer"
}

3. Basic Usage

@Configuration
@EnableRestFramework
public class RestConfig {
@Bean
public ConfigurationLoader configurationLoader() {
return new ConfigurationLoader("config/endpoints");
}
}

Best Practices

1. Configuration Management

• Use environment-specific configurations
• Version control your configurations
• Implement configuration validation
• Use meaningful naming conventions

2. Security

• Always define required access rights
• Implement proper input validation
• Use secure communication protocols
• Regular security audits

3. Performance

• Implement caching where appropriate
• Use pagination for large datasets
• Monitor endpoint performance
• Optimize transformations

4. Monitoring

• Enable metric collection
• Set up alerting
• Log important events
• Track endpoint usage

Framework Capabilities

1. Request Handling

• Multiple HTTP methods
• Custom headers
• Query parameters
• Path variables
• Request body parsing

2. Response Processing

• Content negotiation
• Response formatting
• Status code mapping
• Header manipulation

3. Data Transformation

• Custom transformers
• Data validation
• Format conversion
• Schema validation

4. Integration

• Database connectivity
• External service calls
• Message queues
• Cache systems