kingshuknandy2016/dropwizardappandpactdemo

DropWizard Framework And PACT Demo

Overview

We have developed an Microservice Application Using Dropwizard Framework . Then we have included the Unit Tests related to the Application. It also have Consumer driven test by using Pact.

Contents

• Microservice 1- Application : currency-conversion-dropwizard-demo.

• The Consumer Side Test Project

• The Producer Side Test Project

• The Pact folder which contains the pact files generate by the Consumer Side Test Project

• The Docker Compose file to start the Pact Broker

Micoservice Details

Microservice Service 1: Currency Exchange Service

If you ask it the value of 1 USD in INR, or 1 Australian Dollar in INR, the Currency Exchange Service answers

• 1 USD is 60 INR
• 1 Australian Dollars is 50 INR.

http://localhost:8080/currency-exchange/from/EUR/to/INR

{
  "id": 10002,
  "from": "EUR",
  "to": "INR",
  "conversionMultiple": 75.00,
  "exchangeEnvironmentInfo": "37f1ad927c6e v1 27c6e"
}

Execution

Step 1: The Application Deployment

• Build Application Jar File :
  mvn clean package
  This will first perform mvn clean test on the currency-conversion-dropwizard-demoapplication which will run all unit test
  And then create a DropWizardDemo-1.0-SNAPSHOT.jar inside the target folder

• Start application in jetty server(Default DropWizard Server) :
  java -jar target/DropWizardDemo-1.0-SNAPSHOT.jar server example.yml
  

Now, the application is up and running and it will be accessable in the port.
http://localhost:8080/currency-exchange/from/EUR/to/INR

Step 2: Start a Pact Broker

• Run the docker compose file
  docker-compose up
  

The Broker will be up and running http://localhost:8113/

Step 3: Run the Consumer Side Test

• Run the Consumer Side Test and Generate the Pact Files
  We will navigate to the consumer-side-test Project.
  Then run the command, mvn clean test
  It will run all the Consumer side test, and also generate the pact files

• Push the Generate Pact Files into the Pact Broker
  mvn pact:publish
  You will be able to see the Contract Details from the Broker UI.

Step 4: Verify the Contract from the Producer Side

• Run the Producer Test We will navigate to the producer-side-test Project.
  Then run the command, mvn pact:verify
  It will verify the Customer Contract in the Producer End by taking the contract from the Broker

You will be able to see the Verification Details from the Broker UI.

Step 4: Break the API on the Provider Side and run the test again