Synopsis

This is a small example demonstrate the use of Hystrix for third party dependencies in your application. The application is a REST API to convert currency from GBP or USD to INR. The third party service is being stubbed using wiremock returning a response with a fixed delay.

Installation

• Java 1.8

How to build

./gradlew clean createCapsule

How to start server

./gradlew startServer

How to stop server

./gradlew stopServer

How to start stub (third party service that brings conversion rate)

./gradlew startStubServer

How to stop stub server

./gradlew stopStubServer

Hystrix Dashboard

Hystrix dashboard is a separate application that consumes hystrix event stream emitted from the application(Hystrix Example) and show the graph with current state of circuit.

Starting Hystrix dashboard

• Add the hystrix dashboard war placed under ${projectDir}/dashboard to a tomcat container under /webapps.
• Start tomcat and goto http://localhost:7979
• Add the hystrix event stream of the application which is http://{hostname}:{port}/currencyConversionService/hystrix.stream to dashboard.
• Click on 'Monitor Streams' button.