# Examples - Module Registry
## Overview
This document provides comprehensive examples for using the Module Registry in various scenarios.
## Basic Examples
### Simple Module Registration
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType};
fn main() -> Result<(), Box<dyn std::error::Error>> {
// Create a new module registry
let registry = ModuleRegistry::new();
// Register a simple module
let config = ModuleConfig::new()
.with_name("data-processor")
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor)
.add_capability("processing");
registry.register(config)?;
// Check if module is registered
if registry.is_registered("data-processor") {
println!("✅ Module 'data-processor' is registered");
}
Ok(())
}
```
### Module Discovery
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType, DiscoveryQuery};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register multiple modules
let modules = vec![
("data-processor", ModuleType::DataProcessor),
("data-analyzer", ModuleType::Analyzer),
("data-storage", ModuleType::Storage),
];
for (name, module_type) in modules {
let config = ModuleConfig::new()
.with_name(name)
.with_version("1.0.0")
.with_type(module_type);
registry.register(config)?;
}
// Discover modules by type
let query = DiscoveryQuery::new()
.with_type_filter(ModuleType::DataProcessor);
let found_modules = registry.discover(query)?;
println!("Found {} data processor modules", found_modules.len());
Ok(())
}
```
### Module Instantiation
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register a module
let config = ModuleConfig::new()
.with_name("data-processor")
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor);
registry.register(config)?;
// Create a module instance
let instance = registry.create("data-processor")?;
// Use the module
let data = b"Hello, World!";
let result = instance.process(data)?;
println!("Processed data: {:?}", result);
Ok(())
}
```
## Advanced Examples
### Module with Dependencies
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register base module first
let base_config = ModuleConfig::new()
.with_name("base-module")
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor);
registry.register(base_config)?;
// Register dependent module
let dependent_config = ModuleConfig::new()
.with_name("dependent-module")
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor)
.add_dependency("base-module");
registry.register(dependent_config)?;
// Create instances
let base_instance = registry.create("base-module")?;
let dependent_instance = registry.create("dependent-module")?;
// Use modules
let data = b"input data";
let base_result = base_instance.process(data)?;
let dependent_result = dependent_instance.process(&base_result)?;
println!("Base result: {:?}", base_result);
println!("Dependent result: {:?}", dependent_result);
Ok(())
}
```
### Capability-Based Discovery
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType, CapabilityQuery};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register modules with different capabilities
let modules = vec![
("encryption-module", vec!["encryption", "decryption"]),
("compression-module", vec!["compression", "decompression"]),
("monitoring-module", vec!["monitoring", "logging"]),
];
for (name, capabilities) in modules {
let config = ModuleConfig::new()
.with_name(name)
.with_version("1.0.0")
.with_type(ModuleType::Security);
for capability in capabilities {
config.add_capability(capability);
}
registry.register(config)?;
}
// Discover modules by capabilities
let query = CapabilityQuery::new()
.with_required_capabilities(vec!["encryption"])
.with_optional_capabilities(vec!["monitoring"]);
let found_modules = registry.discover_capabilities(query)?;
println!("Found {} modules with encryption capability", found_modules.len());
Ok(())
}
```
### Semantic Discovery
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType, SemanticQuery};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register modules with metadata
let modules = vec![
("high-performance-processor", "High-performance data processor"),
("low-latency-processor", "Low-latency data processor"),
("batch-processor", "Batch data processor"),
];
for (name, description) in modules {
let config = ModuleConfig::new()
.with_name(name)
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor)
.with_metadata("description", description);
registry.register(config)?;
}
// Discover modules semantically
let query = SemanticQuery::new()
.with_intent("data processing")
.with_context("high performance")
.with_requirements(vec!["performance", "scalability"]);
let found_modules = registry.discover_semantic(query)?;
println!("Found {} high-performance modules", found_modules.len());
Ok(())
}
```
## Configuration Examples
### Basic Configuration
```rust
use module_registry::{ModuleRegistry, Configuration};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure the registry
let config = Configuration::new()
.with_caching(true)
.with_monitoring(true)
.with_logging(true);
registry.configure(config)?;
println!("Registry configured with basic settings");
Ok(())
}
```
### Advanced Configuration
```rust
use module_registry::{ModuleRegistry, AdvancedConfiguration};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure the registry with advanced settings
let config = AdvancedConfiguration::new()
.with_caching_strategy("LRU")
.with_cache_size(1000)
.with_monitoring_level("detailed")
.with_logging_level("debug")
.with_security_hardening(true);
registry.configure_advanced(config)?;
println!("Registry configured with advanced settings");
Ok(())
}
```
### Environment-Specific Configuration
```rust
use module_registry::{ModuleRegistry, EnvironmentConfiguration};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure for development environment
let dev_config = EnvironmentConfiguration::new()
.with_environment("development")
.with_debug_mode(true)
.with_verbose_logging(true)
.with_mock_services(true);
// Configure for production environment
let prod_config = EnvironmentConfiguration::new()
.with_environment("production")
.with_debug_mode(false)
.with_verbose_logging(false)
.with_real_services(true);
registry.configure_environment("development", dev_config)?;
registry.configure_environment("production", prod_config)?;
println!("Registry configured for multiple environments");
Ok(())
}
```
## Performance Examples
### Caching Configuration
```rust
use module_registry::{ModuleRegistry, CachingConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure caching
let cache_config = CachingConfig::new()
.with_cache_type("LRU")
.with_cache_size(1000)
.with_cache_ttl(3600)
.with_cache_compression(true);
registry.configure_caching(cache_config)?;
println!("Registry configured with caching");
Ok(())
}
```
### Performance Optimization
```rust
use module_registry::{ModuleRegistry, PerformanceOptimizationConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure performance optimization
let optimization_config = PerformanceOptimizationConfig::new()
.with_algorithm_optimization(true)
.with_data_structure_optimization(true)
.with_memory_optimization(true)
.with_cpu_optimization(true);
registry.configure_performance_optimization(optimization_config)?;
println!("Registry configured with performance optimization");
Ok(())
}
```
### Resource Management
```rust
use module_registry::{ModuleRegistry, ResourceManagementConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure resource management
let resource_config = ResourceManagementConfig::new()
.with_memory_limit(1024 * 1024 * 1024) // 1GB
.with_cpu_limit(80) // 80%
.with_io_limit(1000) // 1000 IOPS
.with_network_limit(100 * 1024 * 1024); // 100MB/s
registry.configure_resource_management(resource_config)?;
println!("Registry configured with resource management");
Ok(())
}
```
## Security Examples
### Basic Security
```rust
use module_registry::{ModuleRegistry, SecurityConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure basic security
let security_config = SecurityConfig::new()
.with_secure_registration(true)
.with_secure_instantiation(true)
.with_access_control(true);
registry.configure_security(security_config)?;
println!("Registry configured with basic security");
Ok(())
}
```
### Advanced Security
```rust
use module_registry::{ModuleRegistry, AdvancedSecurityConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure advanced security
let security_config = AdvancedSecurityConfig::new()
.with_secure_registration(true)
.with_secure_instantiation(true)
.with_secure_communication(true)
.with_secure_storage(true)
.with_access_control(true)
.with_role_based_access(true)
.with_audit_logging(true);
registry.configure_advanced_security(security_config)?;
println!("Registry configured with advanced security");
Ok(())
}
```
### Access Control
```rust
use module_registry::{ModuleRegistry, AccessControlConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure access control
let access_config = AccessControlConfig::new()
.with_role_based_access(true)
.with_permission_validation(true)
.with_access_logging(true)
.with_access_monitoring(true);
registry.configure_access_control(access_config)?;
println!("Registry configured with access control");
Ok(())
}
```
## Monitoring Examples
### Basic Monitoring
```rust
use module_registry::{ModuleRegistry, MonitoringConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure basic monitoring
let monitoring_config = MonitoringConfig::new()
.with_metrics_collection(true)
.with_logging(true)
.with_alerting(true);
registry.configure_monitoring(monitoring_config)?;
println!("Registry configured with basic monitoring");
Ok(())
}
```
### Advanced Monitoring
```rust
use module_registry::{ModuleRegistry, AdvancedMonitoringConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure advanced monitoring
let monitoring_config = AdvancedMonitoringConfig::new()
.with_metrics_collection(true)
.with_performance_metrics(true)
.with_security_metrics(true)
.with_health_metrics(true)
.with_logging(true)
.with_structured_logging(true)
.with_alerting(true)
.with_real_time_alerting(true);
registry.configure_advanced_monitoring(monitoring_config)?;
println!("Registry configured with advanced monitoring");
Ok(())
}
```
### Health Monitoring
```rust
use module_registry::{ModuleRegistry, HealthMonitoringConfig};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Configure health monitoring
let health_config = HealthMonitoringConfig::new()
.with_health_checks(true)
.with_health_metrics(true)
.with_health_alerts(true)
.with_health_dashboard(true);
registry.configure_health_monitoring(health_config)?;
println!("Registry configured with health monitoring");
Ok(())
}
```
## Real-World Examples
### Web Application Module System
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register web application modules
let web_modules = vec![
("auth-module", ModuleType::Security, vec!["authentication", "authorization"]),
("user-module", ModuleType::DataProcessor, vec!["user-management", "profile"]),
("content-module", ModuleType::DataProcessor, vec!["content-management", "publishing"]),
("api-module", ModuleType::Network, vec!["api-gateway", "routing"]),
];
for (name, module_type, capabilities) in web_modules {
let config = ModuleConfig::new()
.with_name(name)
.with_version("1.0.0")
.with_type(module_type);
for capability in capabilities {
config.add_capability(capability);
}
registry.register(config)?;
}
// Use modules in web application
let auth_module = registry.create("auth-module")?;
let user_module = registry.create("user-module")?;
let content_module = registry.create("content-module")?;
let api_module = registry.create("api-module")?;
println!("Web application modules registered and ready");
Ok(())
}
```
### Microservice Architecture
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register microservice modules
let microservices = vec![
("user-service", "User management service"),
("order-service", "Order processing service"),
("payment-service", "Payment processing service"),
("notification-service", "Notification service"),
];
for (name, description) in microservices {
let config = ModuleConfig::new()
.with_name(name)
.with_version("1.0.0")
.with_type(ModuleType::Network)
.with_metadata("description", description)
.with_metadata("service_type", "microservice");
registry.register(config)?;
}
// Use microservices
let user_service = registry.create("user-service")?;
let order_service = registry.create("order-service")?;
let payment_service = registry.create("payment-service")?;
let notification_service = registry.create("notification-service")?;
println!("Microservice modules registered and ready");
Ok(())
}
```
### Plugin Architecture
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register plugin modules
let plugins = vec![
("data-processor-plugin", "Data processing plugin"),
("encryption-plugin", "Encryption plugin"),
("compression-plugin", "Compression plugin"),
("monitoring-plugin", "Monitoring plugin"),
];
for (name, description) in plugins {
let config = ModuleConfig::new()
.with_name(name)
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor)
.with_metadata("description", description)
.with_metadata("plugin_type", "extension");
registry.register(config)?;
}
// Use plugins
let data_processor = registry.create("data-processor-plugin")?;
let encryption = registry.create("encryption-plugin")?;
let compression = registry.create("compression-plugin")?;
let monitoring = registry.create("monitoring-plugin")?;
println!("Plugin modules registered and ready");
Ok(())
}
```
## Error Handling Examples
### Basic Error Handling
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType, RegistryError};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register a module
let config = ModuleConfig::new()
.with_name("data-processor")
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor);
match registry.register(config) {
Ok(_) => println!("✅ Module registered successfully"),
Err(RegistryError::ModuleAlreadyRegistered { name }) => {
println!("❌ Module '{}' is already registered", name);
}
Err(error) => {
println!("❌ Registration failed: {}", error);
}
}
Ok(())
}
```
### Advanced Error Handling
```rust
use module_registry::{ModuleRegistry, ModuleConfig, ModuleType, RegistryError};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let registry = ModuleRegistry::new();
// Register a module with error handling
let config = ModuleConfig::new()
.with_name("data-processor")
.with_version("1.0.0")
.with_type(ModuleType::DataProcessor);
match registry.register(config) {
Ok(_) => {
println!("✅ Module registered successfully");
// Try to create an instance
match registry.create("data-processor") {
Ok(instance) => {
println!("✅ Module instance created successfully");
// Try to process data
let data = b"test data";
match instance.process(data) {
Ok(result) => {
println!("✅ Data processed successfully: {:?}", result);
}
Err(error) => {
println!("❌ Data processing failed: {}", error);
}
}
}
Err(RegistryError::ModuleNotFound { name }) => {
println!("❌ Module '{}' not found", name);
}
Err(error) => {
println!("❌ Module instantiation failed: {}", error);
}
}
}
Err(RegistryError::ModuleAlreadyRegistered { name }) => {
println!("❌ Module '{}' is already registered", name);
}
Err(RegistryError::InvalidConfiguration { reason }) => {
println!("❌ Invalid configuration: {}", reason);
}
Err(RegistryError::DependencyNotFound { dependency }) => {
println!("❌ Dependency '{}' not found", dependency);
}
Err(RegistryError::CircularDependency { cycle }) => {
println!("❌ Circular dependency detected: {}", cycle);
}
Err(RegistryError::InstantiationFailed { reason }) => {
println!("❌ Module instantiation failed: {}", reason);
}
Err(RegistryError::SecurityViolation { violation }) => {
println!("❌ Security violation: {}", violation);
}
Err(RegistryError::Internal { reason }) => {
println!("❌ Internal error: {}", reason);
}
}
Ok(())
}
```
## Conclusion
These examples demonstrate the comprehensive capabilities of the Module Registry across various scenarios and use cases. By following these examples, you can implement sophisticated module-based architectures with advanced features like dynamic registration, semantic discovery, and comprehensive monitoring.
Key example categories:
1. **Basic Examples**: Simple module registration, discovery, and instantiation
2. **Advanced Examples**: Complex scenarios with dependencies and capabilities
3. **Configuration Examples**: Various configuration options and settings
4. **Performance Examples**: Performance optimization and resource management
5. **Security Examples**: Security configuration and access control
6. **Monitoring Examples**: Monitoring and observability setup
7. **Real-World Examples**: Practical applications and use cases
8. **Error Handling Examples**: Comprehensive error handling strategies