docker-compose.yaml

version: "3.8"
services:
###################### tweet comments gRPC server ################################
    tweet-comments:
        build:
            context: .
            dockerfile: tweet-comments-service/Dockerfile
        env_file:
            - tweet-comments-service-env.list
        image: tweet-comments
        networks:
            - twitter-microservices

####################### Kafka server ####################################
    zookeeper:
        image: 'bitnami/zookeeper:latest'
        environment:
            - ALLOW_ANONYMOUS_LOGIN=yes
        networks:
            - twitter-microservices
        ports:
            - '2181:2181'

    kafka:
        image: 'bitnami/kafka:latest'
        environment:
            - KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
            - ALLOW_PLAINTEXT_LISTENER=yes
            - KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP=CLIENT:PLAINTEXT,EXTERNAL:PLAINTEXT
            - KAFKA_CFG_LISTENERS=CLIENT://:9092,EXTERNAL://:9093
            - KAFKA_CFG_ADVERTISED_LISTENERS=CLIENT://kafka:9092,EXTERNAL://localhost:9093
            - KAFKA_INTER_BROKER_LISTENER_NAME=CLIENT
        networks:
            - twitter-microservices
        ports:
            - '9093:9093'
        depends_on:
            - zookeeper

################################## Redis server ##########################################
    redis:
        image: 'bitnami/redis:latest'
        environment:
            - ALLOW_EMPTY_PASSWORD=yes
        networks:
            - twitter-microservices

######################### Tweet API, Kafka Producer ######################################
    tweet-api:
        build:
            context: .
            dockerfile: tweetapi/Dockerfile
        environment:
            TWEET_COMMENTS_HOST: tweet-comments
            KAFKA_HOST: kafka
            COMMENT_TOPIC_NAME: tweet-comments-topic
            TWEET_TOPIC_NAME: tweets-topic
            REDIS_HOST: redis
            REDIS_STORAGE_SECRET: secret-token
        env_file:
            -   tweet-api-env.list
        image: tweetapi
        networks:
            - twitter-microservices
        ports:
            - 8000:8000
        depends_on:
            - kafka
            - tweet-comments
            - redis

################### Kafka Consumer - Save comments to DB ##################
    comments-consumer:
        build:
            context: .
            dockerfile: comments-consumer/Dockerfile
        image: comments-consumer
        environment:
            TWEET_COMMENTS_HOST: tweet-comments
            KAFKA_HOST: kafka
            TOPIC_NAME: tweet-comments-topic
        networks:
            - twitter-microservices
        depends_on:
            - kafka
            - tweet-comments

################### Kafka Consumer - Cache top words to Redis ##################
    top-words:
        build:
            context: .
            dockerfile: top-comment-words/Dockerfile
        image: top-words
        environment:
            KAFKA_HOST: kafka
            TOPICS_NAME: tweet-comments-topic,tweets-topic
            REDIS_HOST: redis
            REDIS_STORAGE_SECRET: secret-token
            WORD_COUNT_TTL_SECONDS: 90
        networks:
            - twitter-microservices
        depends_on:
            - kafka
            - redis

#########################################################################
networks:
    twitter-microservices: