services:
  kafka:
    image: apache/kafka
    hostname: kafka
    ports:
      - "9092:9092"
      - "9094:9094"
    environment:
      ALLOW_PLAINTEXT_LISTENER: "yes"
      KAFKA_NODE_ID: "0"
      KAFKA_PROCESS_ROLES: "controller,broker"
      # Without SSL
      KAFKA_LISTENERS: PLAINTEXT://:9092,CONTROLLER://:9093,EXTERNAL://:9094
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,EXTERNAL://localhost:9094
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,EXTERNAL:PLAINTEXT,PLAINTEXT:PLAINTEXT
#     # Using SSL
#      KAFKA_LISTENERS: PLAINTEXT://:9092,CONTROLLER://:9093,EXTERNAL://:9094
#      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,EXTERNAL://localhost:9094
#      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,EXTERNAL:SSL,PLAINTEXT:PLAINTEXT
#      KAFKA_SSL_KEYSTORE_TYPE: PEM
#      KAFKA_SSL_KEYSTORE_CERTIFICATE_CHAIN: -----BEGIN CERTIFICATE-----
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#        -----END CERTIFICATE-----
#        -----BEGIN CERTIFICATE-----
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#        -----END CERTIFICATE-----
#      KAFKA_SSL_KEYSTORE_KEY: -----BEGIN PRIVATE KEY-----
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#        -----END PRIVATE KEY-----
#      #KAFKA_SSL_KEYSTORE_CREDENTIALS: example
#      KAFKA_SSL_KEY_CREDENTIALS: example
#      KAFKA_SSL_TRUSTSTORE_TYPE: PEM
#      KAFKA_SSL_TRUSTSTORE_CERTIFICATES: -----BEGIN CERTIFICATE-----
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#        -----END CERTIFICATE-----
#      KAFKA_SSL_CLIENT_AUTH: none
#      ###
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
      KAFKA_CONTROLLER_QUORUM_VOTERS: 0@kafka:9093
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
    volumes:
      - "${PWD}/ssl-dev-fixture/secrets:/etc/kafka/secrets"