a Basic GRPC Server & Client uses Apache Kafka and Avro

As in topic, it is a sample of how to use GRPC server and client with Apache Kafka and its Avro package.
In this tutorial I generate random "Langitude" and "Latitude" variables and send it to Server in view of GRPC(uses protos, req/resp pipeline etc).
Kafka Consumer dispatchs all flowed data, which is wrapped with Apache Avro, to console.

Prerequisites

• Install Node JS
• Install Kafka

Run

• Run Zookeeper
  zkserver start
• for Kafka, be carefull given path is suitable for you or not !
  kafka-server-start /usr/local/etc/kafka/server.properties
• for Server
  node server.js
• for Client
  node client.js
• for Kafka Consumer
  node kafka_consumer.js