Simple microservices example with Java EE 7 and microprofile.
This project is the code for the blog post I wrote. It's a Maven project containing sub-modules. Each sub-module is the microservice required to run. In a nutshell; suppose we're a nuclear plant and we're monitoring the temperatures of our two reactors. Along with the temperatures, we want to see the supervisor's name and the temperature they verified.
Apollo and Artemis are the hypothetical reactors that expose their temperatures (just a random integer) at their REST endpoints.
Poseidon is another microservice that retrieves Apollo's temperature and adds the supervisor's name along with a timestamp.
Zeus is the user interface that gets the reactors' temperatures and the supervisor's name from Poseidon. It's written in JSF and Primefaces.
You need Payara Micro to run the microservices. In a directory, put the Payara Micro jar and the generated .war files of the microservices. Deploy like so:
- java -jar payaramicro.jar --deploy apollo.war --port 8383
- java -jar payaramicro.jar --deploy artemis.war --port 8484
- java -jar payaramicro.jar --deploy poseidon.war --port 8585
- java -jar payaramicro.jar --deploy zeus.war --port 8989
Go to localhost:8989/zeus and that's it.
The project isn't finished. It needs work and I will continue to add functionallity and make it better.
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