Test service with several frameworks/stacks.

Application starts REST server and maps it to PricingController, so that it exposes methods:

• Find price for an article reference.

PricingController calls PricingService, which:

1. calls CatalogueClient to get article info from remote service,
2. calls DiscountPolicyClient to get appropriate discount from remote service,
3. applies discount to article

Configuration includes:

• Configuration of REST service (binding port, etc.)
• Base URLs used to contact other services

Custom stack, including:

• RestExpress for REST capabilities
• Dagger for injection
• Metrics for monitoring
• Hystrix for fault-tolerance
• Jersey client for calls other REST services
• Apache commons CLI for command line parsing

All configuration (but for Hystrix) is set in the command line. Default values are set for all properties.

• Start Application
• Test from HTTP client (http://localhost:12345/pricing/1)
• Access metrics from JMX console

Spring Boot, with modules:

• Actuator for monitoring
• Swagger2 for REST interface documentation
• Hystrix for fault-tolerance

All configuration (but for Hystrix) is set in application.properties file.

• Start Application
• Test from HTTP client (http://localhost:12345/pricing/1)
• Access metrics from JMX console
• Access REST documentation from HTTP client (http://localhost:12345/swagger-ui.html)