MJML compile error (via MJML TCP server): no working server

[legenddaniel]

Python: 3.9 django-mjml: 0.11.0 mjml: 4.10.1

I saw a similar one #119 but that is not solving my issue.

docker-compose.yml:

service:
  ...
  mjml:
    image: liminspace/mjml-tcpserver:0.11.0

settings.py:

MJML_BACKEND_MODE = 'tcpserver'
MJML_TCPSERVERS = [
    ('mjml', 28101),
]

I also tried different settings mentioned in the README none of them works. I can see the image is running on 28101 in docker.

[liminspace]

@legenddaniel looks like it's a docker issue. You provided not enough information about your environments and settings. Be sure that your python backend has access to mjml in the docker (they use common network or the port of mjml is mapped from the container to the host). If you run python on your local machine and run mjml in the docker, just use ports "28101:28101" (set exact port that you set in PORT env var) and use host localhost instead of mjml in MJML_TCPSERVERS.

[legenddaniel]

@legenddaniel looks like it's a docker issue. You provided not enough information about your environments and settings. Be sure that your python backend has access to mjml in the docker (they use common network or the port of mjml is mapped from the container to the host). If you run python on your local machine and run mjml in the docker, just use ports "28101:28101" (set exact port that you set in PORT env var) and use host localhost instead of mjml in MJML_TCPSERVERS.

Hi Igor I am running the backend in docker too, which is 127.0.0.1:8000 or say 0.0.0.0:8000. Do I need extra settings inside docker-compose.yml?

[liminspace]

@legenddaniel show your docker-compose configuration file

[legenddaniel]

version: '1.0'

services:
    nginx:
        image: nginx:latest
        ports:
          - "8001:8001"
        volumes:
          - ./backend:/app
          - ./backend/webapp/static:/static
          - ./config/nginx:/etc/nginx/conf.d
        depends_on:
          - backend
        networks:
          - boilerplate

    db:
        image: postgres:latest
        volumes:
          - ./postgres-data:/var/lib/postgresql/data
          - ./db-dumps:/db-dumps
        ports:
          - "5432:5432"
        env_file:
          - ./backend/.env
        networks:
          - boilerplate

    backend:
        image: backend
        build:
          context: .
          dockerfile: backend.Dockerfile
        volumes:
          - ./backend:/app
          - ./backend/webapp/static:/static
        ports:
          - "8000:8000"
        depends_on:
          - db
        expose:
          - "8000"
        networks:
          - boilerplate
        command: ["/wait-for-it.sh", "db:5432", "--", "../entrypoint-django-runserver.sh"]
        env_file:
          - ./backend/.env

    mjml:
        image: liminspace/mjml-tcpserver:0.11.0
        networks:
          - boilerplate
        depends_on:
          - backend
        ports:
          - "28101:28101"
        expose:
          - "28101"

networks:
    boilerplate:
        driver: bridge

[liminspace]

@legenddaniel remove backend from services.mjml.depends_on and put mjml into services.backend.depends_on. backend makes requests into mjml, so it depends on mjml, not vice versa. Also try to use newer version of docker-compose, for example '3' or '3.9' instead of '1.0'. Remove services.mjml.ports, it doesn't make sense. After these changes it must works. If not, check output of mjml. Be sure it open port and listening. Also sometimes restarting docker daemon on your OS can help (there can be stuck processes that uses ports you try to open).

[legenddaniel]

Yes you are right. This is my fault. Thank you and your awesome project!