# Kafka and Zookeeper

FROM openjdk:8-jdk

ENV DEBIAN_FRONTEND noninteractive
ENV SCALA_VERSION 2.11
# The specified kafka version might not be available on mirrors for downloading (http://apache.mirrors.spacedump.net/kafka/)
ENV KAFKA_VERSION 0.10.2.2
ENV KAFKA_HOME /opt/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION"

# Install Kafka, Zookeeper and other needed things
RUN apt-get update && \
    apt-get install -y zookeeper wget supervisor dnsutils && \
    rm -rf /var/lib/apt/lists/* && \
    apt-get clean

RUN wget -q https://archive.apache.org/dist/kafka/"$KAFKA_VERSION"/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -O /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz
RUN tar xfz /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -C /opt
RUN rm /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz

ADD scripts/start-kafka.sh /usr/bin/start-kafka.sh

# Supervisor config
ADD supervisor/kafka.conf supervisor/zookeeper.conf /etc/supervisor/conf.d/

# 2181 is zookeeper, 9092 is kafka
EXPOSE 2181 9092

CMD ["supervisord", "-n"]