KSQL & Kafka Streams Exercises

Cloning the Repository

1. Clone this repository into a folder ~/confluent-labs on your computer:

   $ git clone https://github.com/confluentinc/training-ksql-and-streams-src.git ~/confluent-streams

2. Navigate to this folder:

   $ cd ~/confluent-streams

3. Optional: Open this folder in your favorite code editor; e.g. if you have VS Code installed then:

   $ code .

Note

We have two main folders solution and labs in this repo. The former contains the complete sample solution for each exercise while the latter contains the scaffolding for each exercise and is meant to be used during the hands-on-labs. For each module of the course that has exercises we have a corresponding sub-folder m-xx where the respective exercises can be found.

Java base Exercises using Gradle

To build a project Java project using Gradle do the following:

1. cd into the corresponding project folder (the folder where the Gradle build file build.gradle is located).

2. Run this command to build the jar:

   $ docker container run --rm \
       -v ${PWD}:/home/gradle/project \
       -v ${HOME}/.gradle:/root/.gradle \
       -w /home/gradle/project \
       frekele/gradle:latest gradle build

3. Run the application:

   $ docker container run --rm \
       -v $(PWD)/target/app.jar:/app.jar \
       openjdk:8-jre-alpine java -jar /app.jar

   Note	Sometimes the Alpine based image is not working depending on the dependencies used. In this case use this command instead:

   $ docker container run --rm \
       -v $(PWD)/target/app.jar:/app.jar \
       openjdk:8-jre java -jar /app.jar