Dockerized Datomic development environment

.env

AWS_ACCESS_KEY_ID=
AWS_DEFAULT_REGION=
AWS_SECRET_ACCESS_KEY=
AWS_SESSION_TOKEN=
DATOMIC_SYSTEM=

README.md

Known Issues

The datomic CLI acts as a proxy to the bastion (a.k.a. access gateway). You might need to restart the process when the local internet connection is not stable (your machine goes to sleep, for example).

See the discussion here: https://forum.datomic.com/t/broken-pipe/1391/3

docker-compose.yml

---
version: '2.4'
services:
  clojure:
    image: clojure:openjdk-8-tools-deps
    working_dir: /workspace
    env_file:
      - ".env"
    volumes:
      - ".:/workspace"
      - "mvn_cache:/root/.m2"
      - "ssh_keys:/root/.ssh"
  datomic-access-gateway:
    extends:
      service: clojure
    command: /workspace/bin/datomic client access ${DATOMIC_SYSTEM} --region ${AWS_DEFAULT_REGION}
    # Using healthcheck as keep-alive for the TCP connection.
    healthcheck:
      test: ["CMD", "curl", "-x", "socks5h://localhost:8182", "http://entry.${DATOMIC_SYSTEM}.${AWS_DEFAULT_REGION}.datomic.net:8182/"]
    ports:
      - "8182:8182"
  repl:
    extends:
      service: clojure
    command: clojure -Arebel:dev:test
    tty: true
    depends_on:
      datomic-access-gateway:
        condition: service_healthy
    # Bridge mode won't work because datomic CLI binds to 127.0.0.1:8182 instead of 0.0.0.0:8182.
    # As a workaround, we can force containers to share a network namespace.
    # See https://blog.mikesir87.io/2019/03/sharing-network-namespaces-in-docker/
    network_mode: service:datomic-access-gateway
  bash:
    extends:
      service: clojure
    # Test access gateway connection by the following command:
    # `curl -x socks5h://localhost:8182 http://entry.${DATOMIC_SYSTEM}.${AWS_DEFAULT_REGION}.datomic.net:8182/`
    # See https://docs.datomic.com/cloud/getting-started/get-connected.html#test-access-gateway
    command: bash
    tty: true
    depends_on:
      datomic-access-gateway:
        condition: service_healthy
    network_mode: service:datomic-access-gateway
volumes:
  mvn_cache: {}
  ssh_keys: {}