Go Compose

A lightweight services composer written in Golang for managing services (processes) in a development environment.

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Installation

$ go get github.com/hadialqattan/go-compose

Usage

$ go-compose start # --config path/to/go-compose.yaml [default=./go-compose.yaml].

go-compose.yaml

services:
  service_name:
    ignore_failures: false
    sub_service: false
    auto_restart: true
    hooks:
        wait: 
            - another_service_name
        stop:
            - another_service_name
        start:
            - another_service_name
    cwd: .
    command: echo "shell script"
    environs:
      ENVIRONMENT_VARIABLE: true

• services: a set of services to run.
• ignore_failures: don't stop other services when this failed.
• sub_service: don't start this service. this may be started by another service using the start hook.
• auto_restart: automatically restart this service if it crashed.
• hooks:
  • wait: wait for other services to stop before starting (setup).
  • stop: stop other services on exit (teardown).
  • start: start other services/sub-services on exit (teardown).
• cwd: where the command will be executed (Command Work Directory).
• command: a unix shell command.
• environs: environment variables.

A real world example

services:

  webapp:
    ignore_failures: true
    auto_restart: true
    hooks:
      start:
        - cleanup
    cwd: .
    command: |
      docker build .
      docker run --rm \
        --name webapp \
        --link db \
        -v ${PWD}:/webapp -w /webapp webapp
    environs:
      - POSTGRES_USER=webapp_admin
      - POSTGRES_PASSWORD=db0123
      - POSTGRES_DB=db

  postgres_db:
    ignore_failures: true
    auto_restart: true
    cwd: .
    command: |
      sleep 3
      docker run --rm \
        --name db postgres:12.0-alpine
    environs:
      - POSTGRES_USER=webapp_admin
      - POSTGRES_PASSWORD=db0123
      - POSTGRES_DB=db

  cleanup:
    sub_service: true
    cwd: .
    command: python3 teardown.py

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Copyright ©

👤 Hadi Alqattan

• Github: @hadialqattan
• Email: [email protected]

📝 License

Copyright © 2020 Hadi Alqattan.
This project is MIT licensed.

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