It consists of two apps main-app and greeting-service.
main-app takes person name via endpoint /greet/{fName}/{lName} which will be sent to the pulsar topic person-message.
It will be received by another app greeting-service which will create a greeting messsage and puts to greeting-message topic which will be received by main-app.
protobuf-model is a common module that contains the Greeting.proto and Person.proto files and protobuf-maven-plugin to generate Java classes
Use the script on pulsar-docker.sh to start pulsar instance.